4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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 #ifdef PERL_IS_MINIPERL
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 /* Drop everything. Heck, don't even try to call it */
81 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
83 /* Drop almost everything */
84 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
87 #define CALL_BODY_SUB(myop) \
88 if (PL_op == (myop)) \
89 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
93 #define CALL_LIST_BODY(cv) \
94 PUSHMARK(PL_stack_sp); \
95 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
98 S_init_tls_and_interp(PerlInterpreter *my_perl)
102 PERL_SET_INTERP(my_perl);
103 #if defined(USE_ITHREADS)
106 PERL_SET_THX(my_perl);
109 MUTEX_INIT(&PL_dollarzero_mutex);
110 MUTEX_INIT(&PL_my_ctx_mutex);
113 #if defined(USE_ITHREADS)
116 /* This always happens for non-ithreads */
119 PERL_SET_THX(my_perl);
124 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
127 Perl_sys_init(int* argc, char*** argv)
131 PERL_ARGS_ASSERT_SYS_INIT;
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_SYS_INIT_BODY(argc, argv);
139 Perl_sys_init3(int* argc, char*** argv, char*** env)
143 PERL_ARGS_ASSERT_SYS_INIT3;
145 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
146 PERL_UNUSED_ARG(argv);
147 PERL_UNUSED_ARG(env);
148 PERL_SYS_INIT3_BODY(argc, argv, env);
155 if (!PL_veto_cleanup) {
156 PERL_SYS_TERM_BODY();
161 #ifdef PERL_IMPLICIT_SYS
163 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
164 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
165 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
166 struct IPerlDir* ipD, struct IPerlSock* ipS,
167 struct IPerlProc* ipP)
169 PerlInterpreter *my_perl;
171 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
173 /* Newx() needs interpreter, so call malloc() instead */
174 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
175 S_init_tls_and_interp(my_perl);
176 Zero(my_perl, 1, PerlInterpreter);
186 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
193 =head1 Embedding Functions
195 =for apidoc perl_alloc
197 Allocates a new Perl interpreter. See L<perlembed>.
205 PerlInterpreter *my_perl;
207 /* Newx() needs interpreter, so call malloc() instead */
208 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
210 S_init_tls_and_interp(my_perl);
211 #ifndef PERL_TRACK_MEMPOOL
212 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
214 Zero(my_perl, 1, PerlInterpreter);
215 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
219 #endif /* PERL_IMPLICIT_SYS */
222 =for apidoc perl_construct
224 Initializes a new Perl interpreter. See L<perlembed>.
230 perl_construct(pTHXx)
234 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
238 PL_perl_destruct_level = 1;
240 PERL_UNUSED_ARG(my_perl);
241 if (PL_perl_destruct_level > 0)
244 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
246 /* set read-only and try to insure than we wont see REFCNT==0
249 SvREADONLY_on(&PL_sv_undef);
250 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
252 sv_setpv(&PL_sv_no,PL_No);
253 /* value lookup in void context - happens to have the side effect
254 of caching the numeric forms. However, as &PL_sv_no doesn't contain
255 a string that is a valid numer, we have to turn the public flags by
261 SvREADONLY_on(&PL_sv_no);
262 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
264 sv_setpv(&PL_sv_yes,PL_Yes);
267 SvREADONLY_on(&PL_sv_yes);
268 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
270 SvREADONLY_on(&PL_sv_placeholder);
271 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
273 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
274 #ifdef PERL_USES_PL_PIDSTATUS
275 PL_pidstatus = newHV();
278 PL_rs = newSVpvs("\n");
288 SET_NUMERIC_STANDARD();
290 #if defined(LOCAL_PATCH_COUNT)
291 PL_localpatches = local_patches; /* For possible -v */
294 #ifdef HAVE_INTERP_INTERN
298 PerlIO_init(aTHX); /* Hook to IO system */
300 PL_fdpid = newAV(); /* for remembering popen pids by fd */
301 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
302 PL_errors = newSVpvs("");
303 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
304 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
305 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
307 /* First entry is a list of empty elements. It needs to be initialised
308 else all hell breaks loose in S_find_uninit_var(). */
309 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
310 PL_regex_pad = AvARRAY(PL_regex_padav);
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 /* Do this now, because destroying ops can cause new SVs to be generated
741 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
742 PL_curcop to point to a valid op from which the filename structure
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);
832 CopSTASH_free(&PL_compiling);
834 /* The exit() function will do everything that needs doing. */
839 /* the syntax tree is shared between clones
840 * so op_free(PL_main_root) only ReREFCNT_dec's
841 * REGEXPs in the parent interpreter
842 * we need to manually ReREFCNT_dec for the clones
844 SvREFCNT_dec(PL_regex_padav);
845 PL_regex_padav = NULL;
849 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
850 PL_stashcache = NULL;
852 /* loosen bonds of global variables */
854 /* XXX can PL_parser still be non-null here? */
855 if(PL_parser && PL_parser->rsfp) {
856 (void)PerlIO_close(PL_parser->rsfp);
857 PL_parser->rsfp = NULL;
861 Safefree(PL_splitstr);
871 PL_doswitches = FALSE;
872 PL_dowarn = G_WARN_OFF;
873 PL_sawampersand = FALSE; /* must save all match strings */
876 Safefree(PL_inplace);
878 SvREFCNT_dec(PL_patchlevel);
879 SvREFCNT_dec(PL_apiversion);
882 SvREFCNT_dec(PL_e_script);
888 /* magical thingies */
890 SvREFCNT_dec(PL_ofsgv); /* *, */
893 SvREFCNT_dec(PL_ors_sv); /* $\ */
896 SvREFCNT_dec(PL_rs); /* $/ */
899 Safefree(PL_osname); /* $^O */
902 SvREFCNT_dec(PL_statname);
906 /* defgv, aka *_ should be taken care of elsewhere */
909 Safefree(PL_efloatbuf);
913 /* startup and shutdown function lists */
914 SvREFCNT_dec(PL_beginav);
915 SvREFCNT_dec(PL_beginav_save);
916 SvREFCNT_dec(PL_endav);
917 SvREFCNT_dec(PL_checkav);
918 SvREFCNT_dec(PL_checkav_save);
919 SvREFCNT_dec(PL_unitcheckav);
920 SvREFCNT_dec(PL_unitcheckav_save);
921 SvREFCNT_dec(PL_initav);
923 PL_beginav_save = NULL;
926 PL_checkav_save = NULL;
927 PL_unitcheckav = NULL;
928 PL_unitcheckav_save = NULL;
931 /* shortcuts just get cleared */
940 PL_last_in_gv = NULL;
952 SvREFCNT_dec(PL_argvout_stack);
953 PL_argvout_stack = NULL;
955 SvREFCNT_dec(PL_modglobal);
957 SvREFCNT_dec(PL_preambleav);
958 PL_preambleav = NULL;
959 SvREFCNT_dec(PL_subname);
961 #ifdef PERL_USES_PL_PIDSTATUS
962 SvREFCNT_dec(PL_pidstatus);
965 SvREFCNT_dec(PL_toptarget);
967 SvREFCNT_dec(PL_bodytarget);
968 PL_bodytarget = NULL;
969 PL_formtarget = NULL;
971 /* free locale stuff */
972 #ifdef USE_LOCALE_COLLATE
973 Safefree(PL_collation_name);
974 PL_collation_name = NULL;
977 #ifdef USE_LOCALE_NUMERIC
978 Safefree(PL_numeric_name);
979 PL_numeric_name = NULL;
980 SvREFCNT_dec(PL_numeric_radix_sv);
981 PL_numeric_radix_sv = NULL;
984 /* clear utf8 character classes */
985 SvREFCNT_dec(PL_utf8_alnum);
986 SvREFCNT_dec(PL_utf8_alpha);
987 SvREFCNT_dec(PL_utf8_space);
988 SvREFCNT_dec(PL_utf8_graph);
989 SvREFCNT_dec(PL_utf8_digit);
990 SvREFCNT_dec(PL_utf8_upper);
991 SvREFCNT_dec(PL_utf8_lower);
992 SvREFCNT_dec(PL_utf8_print);
993 SvREFCNT_dec(PL_utf8_punct);
994 SvREFCNT_dec(PL_utf8_xdigit);
995 SvREFCNT_dec(PL_utf8_mark);
996 SvREFCNT_dec(PL_utf8_toupper);
997 SvREFCNT_dec(PL_utf8_totitle);
998 SvREFCNT_dec(PL_utf8_tolower);
999 SvREFCNT_dec(PL_utf8_tofold);
1000 SvREFCNT_dec(PL_utf8_idstart);
1001 SvREFCNT_dec(PL_utf8_idcont);
1002 SvREFCNT_dec(PL_utf8_foldclosures);
1003 PL_utf8_alnum = NULL;
1004 PL_utf8_alpha = NULL;
1005 PL_utf8_space = NULL;
1006 PL_utf8_graph = NULL;
1007 PL_utf8_digit = NULL;
1008 PL_utf8_upper = NULL;
1009 PL_utf8_lower = NULL;
1010 PL_utf8_print = NULL;
1011 PL_utf8_punct = NULL;
1012 PL_utf8_xdigit = NULL;
1013 PL_utf8_mark = NULL;
1014 PL_utf8_toupper = NULL;
1015 PL_utf8_totitle = NULL;
1016 PL_utf8_tolower = NULL;
1017 PL_utf8_tofold = NULL;
1018 PL_utf8_idstart = NULL;
1019 PL_utf8_idcont = NULL;
1020 PL_utf8_foldclosures = NULL;
1022 if (!specialWARN(PL_compiling.cop_warnings))
1023 PerlMemShared_free(PL_compiling.cop_warnings);
1024 PL_compiling.cop_warnings = NULL;
1025 cophh_free(CopHINTHASH_get(&PL_compiling));
1026 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1027 CopFILE_free(&PL_compiling);
1028 CopSTASH_free(&PL_compiling);
1030 /* Prepare to destruct main symbol table. */
1033 /* break ref loop *:: <=> %:: */
1034 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1037 SvREFCNT_dec(PL_curstname);
1038 PL_curstname = NULL;
1040 /* clear queued errors */
1041 SvREFCNT_dec(PL_errors);
1044 SvREFCNT_dec(PL_isarev);
1047 if (destruct_level >= 2) {
1048 if (PL_scopestack_ix != 0)
1049 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1050 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1051 (long)PL_scopestack_ix);
1052 if (PL_savestack_ix != 0)
1053 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1054 "Unbalanced saves: %ld more saves than restores\n",
1055 (long)PL_savestack_ix);
1056 if (PL_tmps_floor != -1)
1057 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1058 (long)PL_tmps_floor + 1);
1059 if (cxstack_ix != -1)
1060 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1061 (long)cxstack_ix + 1);
1064 #ifdef PERL_IMPLICIT_CONTEXT
1065 /* the entries in this list are allocated via SV PVX's, so get freed
1066 * in sv_clean_all */
1067 Safefree(PL_my_cxt_list);
1070 /* Now absolutely destruct everything, somehow or other, loops or no. */
1072 /* the 2 is for PL_fdpid and PL_strtab */
1073 while (sv_clean_all() > 2)
1076 AvREAL_off(PL_fdpid); /* no surviving entries */
1077 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1080 #ifdef HAVE_INTERP_INTERN
1084 /* Destruct the global string table. */
1086 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1087 * so that sv_free() won't fail on them.
1088 * Now that the global string table is using a single hunk of memory
1089 * for both HE and HEK, we either need to explicitly unshare it the
1090 * correct way, or actually free things here.
1093 const I32 max = HvMAX(PL_strtab);
1094 HE * const * const array = HvARRAY(PL_strtab);
1095 HE *hent = array[0];
1098 if (hent && ckWARN_d(WARN_INTERNAL)) {
1099 HE * const next = HeNEXT(hent);
1100 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1101 "Unbalanced string table refcount: (%ld) for \"%s\"",
1102 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1109 hent = array[riter];
1114 HvARRAY(PL_strtab) = 0;
1115 HvTOTALKEYS(PL_strtab) = 0;
1117 SvREFCNT_dec(PL_strtab);
1120 /* free the pointer tables used for cloning */
1121 ptr_table_free(PL_ptr_table);
1122 PL_ptr_table = (PTR_TBL_t*)NULL;
1125 /* free special SVs */
1127 SvREFCNT(&PL_sv_yes) = 0;
1128 sv_clear(&PL_sv_yes);
1129 SvANY(&PL_sv_yes) = NULL;
1130 SvFLAGS(&PL_sv_yes) = 0;
1132 SvREFCNT(&PL_sv_no) = 0;
1133 sv_clear(&PL_sv_no);
1134 SvANY(&PL_sv_no) = NULL;
1135 SvFLAGS(&PL_sv_no) = 0;
1139 for (i=0; i<=2; i++) {
1140 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1141 sv_clear(PERL_DEBUG_PAD(i));
1142 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1143 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1147 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1148 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1150 #ifdef DEBUG_LEAKING_SCALARS
1151 if (PL_sv_count != 0) {
1156 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1157 svend = &sva[SvREFCNT(sva)];
1158 for (sv = sva + 1; sv < svend; ++sv) {
1159 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1160 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1162 " refcnt=%"UVuf pTHX__FORMAT "\n"
1163 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1165 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1167 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1169 sv->sv_debug_inpad ? "for" : "by",
1170 sv->sv_debug_optype ?
1171 PL_op_name[sv->sv_debug_optype]: "(none)",
1172 PTR2UV(sv->sv_debug_parent),
1175 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1176 Perl_dump_sv_child(aTHX_ sv);
1182 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1186 /* Wait for up to 4 seconds for child to terminate.
1187 This seems to be the least effort way of timing out on reaping
1189 struct timeval waitfor = {4, 0};
1190 int sock = PL_dumper_fd;
1194 FD_SET(sock, &rset);
1195 select(sock + 1, &rset, NULL, NULL, &waitfor);
1196 waitpid(child, &status, WNOHANG);
1201 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1207 #ifdef PERL_DEBUG_READONLY_OPS
1213 #if defined(PERLIO_LAYERS)
1214 /* No more IO - including error messages ! */
1215 PerlIO_cleanup(aTHX);
1218 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1219 as currently layers use it rather than NULL as a marker
1220 for no arg - and will try and SvREFCNT_dec it.
1222 SvREFCNT(&PL_sv_undef) = 0;
1223 SvREADONLY_off(&PL_sv_undef);
1225 Safefree(PL_origfilename);
1226 PL_origfilename = NULL;
1227 Safefree(PL_reg_start_tmp);
1228 PL_reg_start_tmp = (char**)NULL;
1229 PL_reg_start_tmpl = 0;
1230 Safefree(PL_reg_curpm);
1231 Safefree(PL_reg_poscache);
1232 free_tied_hv_pool();
1233 Safefree(PL_op_mask);
1234 Safefree(PL_psig_name);
1235 PL_psig_name = (SV**)NULL;
1236 PL_psig_ptr = (SV**)NULL;
1238 /* We need to NULL PL_psig_pend first, so that
1239 signal handlers know not to use it */
1240 int *psig_save = PL_psig_pend;
1241 PL_psig_pend = (int*)NULL;
1242 Safefree(psig_save);
1246 PL_tainting = FALSE;
1247 PL_taint_warn = FALSE;
1248 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1251 DEBUG_P(debprofdump());
1253 #ifdef USE_REENTRANT_API
1254 Perl_reentrant_free(aTHX);
1259 while (PL_regmatch_slab) {
1260 regmatch_slab *s = PL_regmatch_slab;
1261 PL_regmatch_slab = PL_regmatch_slab->next;
1265 /* As the absolutely last thing, free the non-arena SV for mess() */
1268 /* we know that type == SVt_PVMG */
1270 /* it could have accumulated taint magic */
1273 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1274 moremagic = mg->mg_moremagic;
1275 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1277 Safefree(mg->mg_ptr);
1281 /* we know that type >= SVt_PV */
1282 SvPV_free(PL_mess_sv);
1283 Safefree(SvANY(PL_mess_sv));
1284 Safefree(PL_mess_sv);
1291 =for apidoc perl_free
1293 Releases a Perl interpreter. See L<perlembed>.
1303 PERL_ARGS_ASSERT_PERL_FREE;
1305 if (PL_veto_cleanup)
1308 #ifdef PERL_TRACK_MEMPOOL
1311 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1312 * value as we're probably hunting memory leaks then
1314 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1315 if (!s || atoi(s) == 0) {
1316 const U32 old_debug = PL_debug;
1317 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1318 thread at thread exit. */
1320 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1321 "free this thread's memory\n");
1322 PL_debug &= ~ DEBUG_m_FLAG;
1324 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1325 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1326 PL_debug = old_debug;
1331 #if defined(WIN32) || defined(NETWARE)
1332 # if defined(PERL_IMPLICIT_SYS)
1335 void *host = nw_internal_host;
1337 void *host = w32_internal_host;
1339 PerlMem_free(aTHXx);
1341 nw_delete_internal_host(host);
1343 win32_delete_internal_host(host);
1347 PerlMem_free(aTHXx);
1350 PerlMem_free(aTHXx);
1354 #if defined(USE_ITHREADS)
1355 /* provide destructors to clean up the thread key when libperl is unloaded */
1356 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1358 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1359 #pragma fini "perl_fini"
1360 #elif defined(__sun) && !defined(__GNUC__)
1361 #pragma fini (perl_fini)
1365 #if defined(__GNUC__)
1366 __attribute__((destructor))
1371 if (PL_curinterp && !PL_veto_cleanup)
1376 #endif /* THREADS */
1379 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1382 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1383 PL_exitlist[PL_exitlistlen].fn = fn;
1384 PL_exitlist[PL_exitlistlen].ptr = ptr;
1389 S_set_caret_X(pTHX) {
1391 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1393 SV *const caret_x = GvSV(tmpgv);
1395 sv_setpv(caret_x, os2_execname(aTHX));
1397 # ifdef USE_KERN_PROC_PATHNAME
1402 mib[2] = KERN_PROC_PATHNAME;
1405 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1406 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1407 sv_grow(caret_x, size);
1409 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1411 SvPOK_only(caret_x);
1412 SvCUR_set(caret_x, size - 1);
1417 # elif defined(USE_NSGETEXECUTABLEPATH)
1419 uint32_t size = sizeof(buf);
1421 _NSGetExecutablePath(buf, &size);
1422 if (size < MAXPATHLEN * MAXPATHLEN) {
1423 sv_grow(caret_x, size);
1424 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1425 char *const tidied = realpath(SvPVX(caret_x), NULL);
1427 sv_setpv(caret_x, tidied);
1430 SvPOK_only(caret_x);
1431 SvCUR_set(caret_x, size);
1436 # elif defined(HAS_PROCSELFEXE)
1437 char buf[MAXPATHLEN];
1438 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1440 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1441 includes a spurious NUL which will cause $^X to fail in system
1442 or backticks (this will prevent extensions from being built and
1443 many tests from working). readlink is not meant to add a NUL.
1444 Normal readlink works fine.
1446 if (len > 0 && buf[len-1] == '\0') {
1450 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1451 returning the text "unknown" from the readlink rather than the path
1452 to the executable (or returning an error from the readlink). Any
1453 valid path has a '/' in it somewhere, so use that to validate the
1454 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1456 if (len > 0 && memchr(buf, '/', len)) {
1457 sv_setpvn(caret_x, buf, len);
1461 /* Fallback to this: */
1462 sv_setpv(caret_x, PL_origargv[0]);
1468 =for apidoc perl_parse
1470 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1475 #define SET_CURSTASH(newstash) \
1476 if (PL_curstash != newstash) { \
1477 SvREFCNT_dec(PL_curstash); \
1478 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1482 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1489 PERL_ARGS_ASSERT_PERL_PARSE;
1490 #ifndef MULTIPLICITY
1491 PERL_UNUSED_ARG(my_perl);
1494 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1495 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1496 * This MUST be done before any hash stores or fetches take place.
1497 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
1498 * yourself, it is your responsibility to provide a good random seed!
1499 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1500 if (!PL_rehash_seed_set)
1501 PL_rehash_seed = get_hash_seed();
1503 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1505 if (s && (atoi(s) == 1))
1506 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1508 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1513 if (PL_origalen != 0) {
1514 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1517 /* Set PL_origalen be the sum of the contiguous argv[]
1518 * elements plus the size of the env in case that it is
1519 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1520 * as the maximum modifiable length of $0. In the worst case
1521 * the area we are able to modify is limited to the size of
1522 * the original argv[0]. (See below for 'contiguous', though.)
1524 const char *s = NULL;
1527 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1528 /* Do the mask check only if the args seem like aligned. */
1530 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1532 /* See if all the arguments are contiguous in memory. Note
1533 * that 'contiguous' is a loose term because some platforms
1534 * align the argv[] and the envp[]. If the arguments look
1535 * like non-aligned, assume that they are 'strictly' or
1536 * 'traditionally' contiguous. If the arguments look like
1537 * aligned, we just check that they are within aligned
1538 * PTRSIZE bytes. As long as no system has something bizarre
1539 * like the argv[] interleaved with some other data, we are
1540 * fine. (Did I just evoke Murphy's Law?) --jhi */
1541 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1543 for (i = 1; i < PL_origargc; i++) {
1544 if ((PL_origargv[i] == s + 1
1546 || PL_origargv[i] == s + 2
1551 (PL_origargv[i] > s &&
1553 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1564 #ifndef PERL_USE_SAFE_PUTENV
1565 /* Can we grab env area too to be used as the area for $0? */
1566 if (s && PL_origenviron && !PL_use_safe_putenv) {
1567 if ((PL_origenviron[0] == s + 1)
1570 (PL_origenviron[0] > s &&
1571 PL_origenviron[0] <=
1572 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1575 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1576 s = PL_origenviron[0];
1579 my_setenv("NoNe SuCh", NULL);
1580 /* Force copy of environment. */
1581 for (i = 1; PL_origenviron[i]; i++) {
1582 if (PL_origenviron[i] == s + 1
1585 (PL_origenviron[i] > s &&
1586 PL_origenviron[i] <=
1587 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1590 s = PL_origenviron[i];
1598 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1600 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1605 /* Come here if running an undumped a.out. */
1607 PL_origfilename = savepv(argv[0]);
1608 PL_do_undump = FALSE;
1609 cxstack_ix = -1; /* start label stack again */
1611 assert (!PL_tainted);
1613 S_set_caret_X(aTHX);
1615 init_postdump_symbols(argc,argv,env);
1620 op_free(PL_main_root);
1621 PL_main_root = NULL;
1623 PL_main_start = NULL;
1624 SvREFCNT_dec(PL_main_cv);
1628 oldscope = PL_scopestack_ix;
1629 PL_dowarn = G_WARN_OFF;
1634 parse_body(env,xsinit);
1635 if (PL_unitcheckav) {
1636 call_list(oldscope, PL_unitcheckav);
1639 PERL_SET_PHASE(PERL_PHASE_CHECK);
1640 call_list(oldscope, PL_checkav);
1648 /* my_exit() was called */
1649 while (PL_scopestack_ix > oldscope)
1652 SET_CURSTASH(PL_defstash);
1653 if (PL_unitcheckav) {
1654 call_list(oldscope, PL_unitcheckav);
1657 PERL_SET_PHASE(PERL_PHASE_CHECK);
1658 call_list(oldscope, PL_checkav);
1663 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1671 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1672 miniperl, and we need to see those flags reflected in the values here. */
1674 /* What this returns is subject to change. Use the public interface in Config.
1677 S_Internals_V(pTHX_ CV *cv)
1680 #ifdef LOCAL_PATCH_COUNT
1681 const int local_patch_count = LOCAL_PATCH_COUNT;
1683 const int local_patch_count = 0;
1685 const int entries = 3 + local_patch_count;
1687 static char non_bincompat_options[] =
1691 # ifdef HOMEGROWN_POSIX_SIGNALS
1692 " HOMEGROWN_POSIX_SIGNALS"
1697 # ifdef PERL_DISABLE_PMC
1700 # ifdef PERL_DONT_CREATE_GVSV
1701 " PERL_DONT_CREATE_GVSV"
1703 # ifdef PERL_EXTERNAL_GLOB
1704 " PERL_EXTERNAL_GLOB"
1706 # ifdef PERL_IS_MINIPERL
1709 # ifdef PERL_MALLOC_WRAP
1712 # ifdef PERL_MEM_LOG
1715 # ifdef PERL_MEM_LOG_NOIMPL
1716 " PERL_MEM_LOG_NOIMPL"
1718 # ifdef PERL_PRESERVE_IVUV
1719 " PERL_PRESERVE_IVUV"
1721 # ifdef PERL_USE_DEVEL
1724 # ifdef PERL_USE_SAFE_PUTENV
1725 " PERL_USE_SAFE_PUTENV"
1727 # ifdef UNLINK_ALL_VERSIONS
1728 " UNLINK_ALL_VERSIONS"
1730 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1731 " USE_ATTRIBUTES_FOR_PERLIO"
1733 # ifdef USE_FAST_STDIO
1739 # ifdef USE_LOCALE_CTYPE
1742 # ifdef USE_PERL_ATOF
1745 # ifdef USE_SITECUSTOMIZE
1746 " USE_SITECUSTOMIZE"
1749 PERL_UNUSED_ARG(cv);
1750 PERL_UNUSED_ARG(items);
1752 EXTEND(SP, entries);
1754 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1755 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1756 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1760 PUSHs(Perl_newSVpvn_flags(aTHX_
1761 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1764 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1768 PUSHs(&PL_sv_undef);
1771 for (i = 1; i <= local_patch_count; i++) {
1772 /* This will be an undef, if PL_localpatches[i] is NULL. */
1773 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1779 #define INCPUSH_UNSHIFT 0x01
1780 #define INCPUSH_ADD_OLD_VERS 0x02
1781 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1782 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1783 #define INCPUSH_NOT_BASEDIR 0x10
1784 #define INCPUSH_CAN_RELOCATE 0x20
1785 #define INCPUSH_ADD_SUB_DIRS \
1786 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1789 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1793 int argc = PL_origargc;
1794 char **argv = PL_origargv;
1795 const char *scriptname = NULL;
1796 VOL bool dosearch = FALSE;
1798 bool doextract = FALSE;
1799 const char *cddir = NULL;
1800 #ifdef USE_SITECUSTOMIZE
1801 bool minus_f = FALSE;
1803 SV *linestr_sv = newSV_type(SVt_PVIV);
1804 bool add_read_e_script = FALSE;
1806 PERL_SET_PHASE(PERL_PHASE_START);
1808 SvGROW(linestr_sv, 80);
1809 sv_setpvs(linestr_sv,"");
1815 for (argc--,argv++; argc > 0; argc--,argv++) {
1816 if (argv[0][0] != '-' || !argv[0][1])
1822 #ifndef PERL_STRICT_CR
1846 if ((s = moreswitches(s)))
1851 CHECK_MALLOC_TOO_LATE_FOR('t');
1852 if( !PL_tainting ) {
1853 PL_taint_warn = TRUE;
1859 CHECK_MALLOC_TOO_LATE_FOR('T');
1861 PL_taint_warn = FALSE;
1869 forbid_setid('e', FALSE);
1871 PL_e_script = newSVpvs("");
1872 add_read_e_script = TRUE;
1875 sv_catpv(PL_e_script, s);
1877 sv_catpv(PL_e_script, argv[1]);
1881 Perl_croak(aTHX_ "No code specified for -%c", c);
1882 sv_catpvs(PL_e_script, "\n");
1886 #ifdef USE_SITECUSTOMIZE
1892 case 'I': /* -I handled both here and in moreswitches() */
1893 forbid_setid('I', FALSE);
1894 if (!*++s && (s=argv[1]) != NULL) {
1898 STRLEN len = strlen(s);
1899 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1902 Perl_croak(aTHX_ "No directory specified for -I");
1905 forbid_setid('S', FALSE);
1914 opts_prog = newSVpvs("use Config; Config::_V()");
1918 opts_prog = Perl_newSVpvf(aTHX_
1919 "use Config; Config::config_vars(qw%c%s%c)",
1923 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1924 /* don't look for script or read stdin */
1925 scriptname = BIT_BUCKET;
1937 if (!*++s || isSPACE(*s)) {
1941 /* catch use of gnu style long options */
1942 if (strEQ(s, "version")) {
1946 if (strEQ(s, "help")) {
1953 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1964 #ifndef SECURE_INTERNAL_GETENV
1967 (s = PerlEnv_getenv("PERL5OPT")))
1971 if (*s == '-' && *(s+1) == 'T') {
1972 CHECK_MALLOC_TOO_LATE_FOR('T');
1974 PL_taint_warn = FALSE;
1977 char *popt_copy = NULL;
1990 if (!strchr("CDIMUdmtwW", *s))
1991 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1995 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1996 s = popt_copy + (s - d);
2004 if( !PL_tainting ) {
2005 PL_taint_warn = TRUE;
2016 #if defined(USE_SITECUSTOMIZE)
2018 /* The games with local $! are to avoid setting errno if there is no
2019 sitecustomize script. */
2020 # ifdef PERL_IS_MINIPERL
2021 AV *const inc = GvAV(PL_incgv);
2022 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2025 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2027 "BEGIN { do {local $!; -f '%"SVf"/buildcustomize.pl'} && do '%"SVf"/buildcustomize.pl' }", *inc0, *inc0));
2030 /* SITELIB_EXP is a function call on Win32. */
2031 const char *const sitelib = SITELIB_EXP;
2032 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2034 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
2040 scriptname = argv[0];
2043 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2045 else if (scriptname == NULL) {
2047 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2053 /* Set $^X early so that it can be used for relocatable paths in @INC */
2054 assert (!PL_tainted);
2056 S_set_caret_X(aTHX);
2061 bool suidscript = FALSE;
2063 open_script(scriptname, dosearch, &suidscript, &rsfp);
2065 validate_suid(validarg, scriptname, fdscript, suidscript,
2069 # if defined(SIGCHLD) || defined(SIGCLD)
2072 # define SIGCHLD SIGCLD
2074 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2075 if (sigstate == (Sighandler_t) SIG_IGN) {
2076 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2077 "Can't ignore signal CHLD, forcing to default");
2078 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2086 /* This will croak if suidscript is true, as -x cannot be used with
2088 forbid_setid('x', suidscript);
2089 /* Hence you can't get here if suidscript is true */
2091 find_beginning(linestr_sv, rsfp);
2092 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2093 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2097 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2098 CvUNIQUE_on(PL_compcv);
2100 CvPADLIST(PL_compcv) = pad_new(0);
2102 PL_isarev = newHV();
2105 boot_core_UNIVERSAL();
2107 newXS("Internals::V", S_Internals_V, __FILE__);
2110 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2112 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2118 # ifdef HAS_SOCKS5_INIT
2119 socks5_init(argv[0]);
2125 init_predump_symbols();
2126 /* init_postdump_symbols not currently designed to be called */
2127 /* more than once (ENV isn't cleared first, for example) */
2128 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2130 init_postdump_symbols(argc,argv,env);
2132 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2133 * or explicitly in some platforms.
2134 * locale.c:Perl_init_i18nl10n() if the environment
2135 * look like the user wants to use UTF-8. */
2136 #if defined(__SYMBIAN32__)
2137 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2139 # ifndef PERL_IS_MINIPERL
2141 /* Requires init_predump_symbols(). */
2142 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2147 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2148 * and the default open disciplines. */
2149 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2150 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2152 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2153 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2154 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2156 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2157 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2158 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2160 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2161 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2162 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2164 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2165 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2168 sv_setpvs(sv, ":utf8\0:utf8");
2170 sv_setpvs(sv, ":utf8\0");
2173 sv_setpvs(sv, "\0:utf8");
2182 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2183 if (strEQ(s, "unsafe"))
2184 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2185 else if (strEQ(s, "safe"))
2186 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2188 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2195 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2199 PL_xmlfp = PerlIO_stdout();
2201 PL_xmlfp = PerlIO_open(s, "w");
2203 Perl_croak(aTHX_ "Can't open %s", s);
2205 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2211 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2212 PL_madskills = atoi(s);
2213 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2218 lex_start(linestr_sv, rsfp, 0);
2219 PL_subname = newSVpvs("main");
2221 if (add_read_e_script)
2222 filter_add(read_e_script, NULL);
2224 /* now parse the script */
2226 SETERRNO(0,SS_NORMAL);
2227 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2229 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2231 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2235 CopLINE_set(PL_curcop, 0);
2236 SET_CURSTASH(PL_defstash);
2238 SvREFCNT_dec(PL_e_script);
2246 SAVECOPFILE(PL_curcop);
2247 SAVECOPLINE(PL_curcop);
2248 gv_check(PL_defstash);
2257 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2258 dump_mstats("after compilation:");
2263 PL_restartjmpenv = NULL;
2269 =for apidoc perl_run
2271 Tells a Perl interpreter to run. See L<perlembed>.
2284 PERL_ARGS_ASSERT_PERL_RUN;
2285 #ifndef MULTIPLICITY
2286 PERL_UNUSED_ARG(my_perl);
2289 oldscope = PL_scopestack_ix;
2297 cxstack_ix = -1; /* start context stack again */
2299 case 0: /* normal completion */
2303 case 2: /* my_exit() */
2304 while (PL_scopestack_ix > oldscope)
2307 SET_CURSTASH(PL_defstash);
2308 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2309 PL_endav && !PL_minus_c) {
2310 PERL_SET_PHASE(PERL_PHASE_END);
2311 call_list(oldscope, PL_endav);
2314 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2315 dump_mstats("after execution: ");
2321 POPSTACK_TO(PL_mainstack);
2324 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2335 S_run_body(pTHX_ I32 oldscope)
2338 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2339 PL_sawampersand ? "Enabling" : "Omitting"));
2341 if (!PL_restartop) {
2345 exit(0); /* less likely to core dump than my_exit(0) */
2349 if (DEBUG_x_TEST || DEBUG_B_TEST)
2350 dump_all_perl(!DEBUG_B_TEST);
2352 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2356 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2359 if (PERLDB_SINGLE && PL_DBsingle)
2360 sv_setiv(PL_DBsingle, 1);
2362 PERL_SET_PHASE(PERL_PHASE_INIT);
2363 call_list(oldscope, PL_initav);
2365 #ifdef PERL_DEBUG_READONLY_OPS
2366 Perl_pending_Slabs_to_ro(aTHX);
2372 PERL_SET_PHASE(PERL_PHASE_RUN);
2375 PL_restartjmpenv = NULL;
2376 PL_op = PL_restartop;
2380 else if (PL_main_start) {
2381 CvDEPTH(PL_main_cv) = 1;
2382 PL_op = PL_main_start;
2390 =head1 SV Manipulation Functions
2392 =for apidoc p||get_sv
2394 Returns the SV of the specified Perl scalar. C<flags> are passed to
2395 C<gv_fetchpv>. If C<GV_ADD> is set and the
2396 Perl variable does not exist then it will be created. If C<flags> is zero
2397 and the variable does not exist then NULL is returned.
2403 Perl_get_sv(pTHX_ const char *name, I32 flags)
2407 PERL_ARGS_ASSERT_GET_SV;
2409 gv = gv_fetchpv(name, flags, SVt_PV);
2416 =head1 Array Manipulation Functions
2418 =for apidoc p||get_av
2420 Returns the AV of the specified Perl global or package array with the given
2421 name (so it won't work on lexical variables). C<flags> are passed
2422 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2423 Perl variable does not exist then it will be created. If C<flags> is zero
2424 and the variable does not exist then NULL is returned.
2426 Perl equivalent: C<@{"$name"}>.
2432 Perl_get_av(pTHX_ const char *name, I32 flags)
2434 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2436 PERL_ARGS_ASSERT_GET_AV;
2446 =head1 Hash Manipulation Functions
2448 =for apidoc p||get_hv
2450 Returns the HV of the specified Perl hash. C<flags> are passed to
2451 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.
2459 Perl_get_hv(pTHX_ const char *name, I32 flags)
2461 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2463 PERL_ARGS_ASSERT_GET_HV;
2473 =head1 CV Manipulation Functions
2475 =for apidoc p||get_cvn_flags
2477 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2478 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2479 exist then it will be declared (which has the same effect as saying
2480 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2481 then NULL is returned.
2483 =for apidoc p||get_cv
2485 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2491 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2493 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2494 /* XXX this is probably not what they think they're getting.
2495 * It has the same effect as "sub name;", i.e. just a forward
2498 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2500 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2501 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
2502 return newSUB(start_subparse(FALSE, 0),
2503 newSVOP(OP_CONST, 0, sv),
2511 /* Nothing in core calls this now, but we can't replace it with a macro and
2512 move it to mathoms.c as a macro would evaluate name twice. */
2514 Perl_get_cv(pTHX_ const char *name, I32 flags)
2516 PERL_ARGS_ASSERT_GET_CV;
2518 return get_cvn_flags(name, strlen(name), flags);
2521 /* Be sure to refetch the stack pointer after calling these routines. */
2525 =head1 Callback Functions
2527 =for apidoc p||call_argv
2529 Performs a callback to the specified named and package-scoped Perl subroutine
2530 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2532 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2538 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2540 /* See G_* flags in cop.h */
2541 /* null terminated arg list */
2546 PERL_ARGS_ASSERT_CALL_ARGV;
2551 mXPUSHs(newSVpv(*argv,0));
2556 return call_pv(sub_name, flags);
2560 =for apidoc p||call_pv
2562 Performs a callback to the specified Perl sub. See L<perlcall>.
2568 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2569 /* name of the subroutine */
2570 /* See G_* flags in cop.h */
2572 PERL_ARGS_ASSERT_CALL_PV;
2574 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2578 =for apidoc p||call_method
2580 Performs a callback to the specified Perl method. The blessed object must
2581 be on the stack. See L<perlcall>.
2587 Perl_call_method(pTHX_ const char *methname, I32 flags)
2588 /* name of the subroutine */
2589 /* See G_* flags in cop.h */
2592 PERL_ARGS_ASSERT_CALL_METHOD;
2594 len = strlen(methname);
2596 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2597 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2600 /* May be called with any of a CV, a GV, or an SV containing the name. */
2602 =for apidoc p||call_sv
2604 Performs a callback to the Perl sub whose name is in the SV. See
2611 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2612 /* See G_* flags in cop.h */
2615 LOGOP myop; /* fake syntax tree node */
2620 bool oldcatch = CATCH_GET;
2622 OP* const oldop = PL_op;
2625 PERL_ARGS_ASSERT_CALL_SV;
2627 if (flags & G_DISCARD) {
2631 if (!(flags & G_WANT)) {
2632 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2637 Zero(&myop, 1, LOGOP);
2638 myop.op_next = NULL;
2639 if (!(flags & G_NOARGS))
2640 myop.op_flags |= OPf_STACKED;
2641 myop.op_flags |= OP_GIMME_REVERSE(flags);
2645 EXTEND(PL_stack_sp, 1);
2646 *++PL_stack_sp = sv;
2648 oldscope = PL_scopestack_ix;
2650 if (PERLDB_SUB && PL_curstash != PL_debstash
2651 /* Handle first BEGIN of -d. */
2652 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2653 /* Try harder, since this may have been a sighandler, thus
2654 * curstash may be meaningless. */
2655 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2656 && !(flags & G_NODEBUG))
2657 PL_op->op_private |= OPpENTERSUB_DB;
2659 if (flags & G_METHOD) {
2660 Zero(&method_op, 1, UNOP);
2661 method_op.op_next = PL_op;
2662 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2663 method_op.op_type = OP_METHOD;
2664 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2665 myop.op_type = OP_ENTERSUB;
2666 PL_op = (OP*)&method_op;
2669 if (!(flags & G_EVAL)) {
2671 CALL_BODY_SUB((OP*)&myop);
2672 retval = PL_stack_sp - (PL_stack_base + oldmark);
2673 CATCH_SET(oldcatch);
2676 myop.op_other = (OP*)&myop;
2678 create_eval_scope(flags|G_FAKINGEVAL);
2686 CALL_BODY_SUB((OP*)&myop);
2687 retval = PL_stack_sp - (PL_stack_base + oldmark);
2688 if (!(flags & G_KEEPERR)) {
2696 /* my_exit() was called */
2697 SET_CURSTASH(PL_defstash);
2704 PL_restartjmpenv = NULL;
2705 PL_op = PL_restartop;
2709 PL_stack_sp = PL_stack_base + oldmark;
2710 if ((flags & G_WANT) == G_ARRAY)
2714 *++PL_stack_sp = &PL_sv_undef;
2719 if (PL_scopestack_ix > oldscope)
2720 delete_eval_scope();
2724 if (flags & G_DISCARD) {
2725 PL_stack_sp = PL_stack_base + oldmark;
2734 /* Eval a string. The G_EVAL flag is always assumed. */
2737 =for apidoc p||eval_sv
2739 Tells Perl to C<eval> the string in the SV. It supports the same flags
2740 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2746 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2748 /* See G_* flags in cop.h */
2752 UNOP myop; /* fake syntax tree node */
2753 VOL I32 oldmark = SP - PL_stack_base;
2756 OP* const oldop = PL_op;
2759 PERL_ARGS_ASSERT_EVAL_SV;
2761 if (flags & G_DISCARD) {
2768 Zero(PL_op, 1, UNOP);
2769 EXTEND(PL_stack_sp, 1);
2770 *++PL_stack_sp = sv;
2772 if (!(flags & G_NOARGS))
2773 myop.op_flags = OPf_STACKED;
2774 myop.op_next = NULL;
2775 myop.op_type = OP_ENTEREVAL;
2776 myop.op_flags |= OP_GIMME_REVERSE(flags);
2777 if (flags & G_KEEPERR)
2778 myop.op_flags |= OPf_SPECIAL;
2780 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2781 * before a PUSHEVAL, which corrupts the stack after a croak */
2782 TAINT_PROPER("eval_sv()");
2788 if (PL_op == (OP*)(&myop)) {
2789 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2791 goto fail; /* failed in compilation */
2794 retval = PL_stack_sp - (PL_stack_base + oldmark);
2795 if (!(flags & G_KEEPERR)) {
2803 /* my_exit() was called */
2804 SET_CURSTASH(PL_defstash);
2811 PL_restartjmpenv = NULL;
2812 PL_op = PL_restartop;
2817 PL_stack_sp = PL_stack_base + oldmark;
2818 if ((flags & G_WANT) == G_ARRAY)
2822 *++PL_stack_sp = &PL_sv_undef;
2828 if (flags & G_DISCARD) {
2829 PL_stack_sp = PL_stack_base + oldmark;
2839 =for apidoc p||eval_pv
2841 Tells Perl to C<eval> the given string and return an SV* result.
2847 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2851 SV* sv = newSVpv(p, 0);
2853 PERL_ARGS_ASSERT_EVAL_PV;
2855 eval_sv(sv, G_SCALAR);
2862 if (croak_on_error && SvTRUE(ERRSV)) {
2863 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2869 /* Require a module. */
2872 =head1 Embedding Functions
2874 =for apidoc p||require_pv
2876 Tells Perl to C<require> the file named by the string argument. It is
2877 analogous to the Perl code C<eval "require '$file'">. It's even
2878 implemented that way; consider using load_module instead.
2883 Perl_require_pv(pTHX_ const char *pv)
2889 PERL_ARGS_ASSERT_REQUIRE_PV;
2891 PUSHSTACKi(PERLSI_REQUIRE);
2893 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2894 eval_sv(sv_2mortal(sv), G_DISCARD);
2900 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2902 /* This message really ought to be max 23 lines.
2903 * Removed -h because the user already knows that option. Others? */
2905 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2906 minimum of 509 character string literals. */
2907 static const char * const usage_msg[] = {
2908 " -0[octal] specify record separator (\\0, if no argument)\n"
2909 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2910 " -C[number/list] enables the listed Unicode features\n"
2911 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2912 " -d[:debugger] run program under debugger\n"
2913 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2914 " -e program one line of program (several -e's allowed, omit programfile)\n"
2915 " -E program like -e, but enables all optional features\n"
2916 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2917 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2918 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2919 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2920 " -l[octal] enable line ending processing, specifies line terminator\n"
2921 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2922 " -n assume \"while (<>) { ... }\" loop around program\n"
2923 " -p assume loop like -n but print line also, like sed\n"
2924 " -s enable rudimentary parsing for switches after programfile\n"
2925 " -S look for programfile using PATH environment variable\n",
2926 " -t enable tainting warnings\n"
2927 " -T enable tainting checks\n"
2928 " -u dump core after parsing program\n"
2929 " -U allow unsafe operations\n"
2930 " -v print version, patchlevel and license\n"
2931 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2932 " -w enable many useful warnings\n"
2933 " -W enable all warnings\n"
2934 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2935 " -X disable all warnings\n"
2937 "Run 'perldoc perl' for more help with Perl.\n\n",
2940 const char * const *p = usage_msg;
2941 PerlIO *out = PerlIO_stdout();
2943 PERL_ARGS_ASSERT_USAGE;
2946 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2949 PerlIO_puts(out, *p++);
2952 /* convert a string of -D options (or digits) into an int.
2953 * sets *s to point to the char after the options */
2957 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2959 static const char * const usage_msgd[] = {
2960 " Debugging flag values: (see also -d)\n"
2961 " p Tokenizing and parsing (with v, displays parse stack)\n"
2962 " s Stack snapshots (with v, displays all stacks)\n"
2963 " l Context (loop) stack processing\n"
2964 " t Trace execution\n"
2965 " o Method and overloading resolution\n",
2966 " c String/numeric conversions\n"
2967 " P Print profiling info, source file input state\n"
2968 " m Memory and SV allocation\n"
2969 " f Format processing\n"
2970 " r Regular expression parsing and execution\n"
2971 " x Syntax tree dump\n",
2972 " u Tainting checks\n"
2973 " H Hash dump -- usurps values()\n"
2974 " X Scratchpad allocation\n"
2977 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2978 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2979 " v Verbose: use in conjunction with other flags\n"
2980 " C Copy On Write\n"
2981 " A Consistency checks on internal structures\n"
2982 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2983 " M trace smart match resolution\n"
2984 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
2989 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2992 /* if adding extra options, remember to update DEBUG_MASK */
2993 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
2995 for (; isALNUM(**s); (*s)++) {
2996 const char * const d = strchr(debopts,**s);
2998 i |= 1 << (d - debopts);
2999 else if (ckWARN_d(WARN_DEBUGGING))
3000 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3001 "invalid option -D%c, use -D'' to see choices\n", **s);
3004 else if (isDIGIT(**s)) {
3006 for (; isALNUM(**s); (*s)++) ;
3008 else if (givehelp) {
3009 const char *const *p = usage_msgd;
3010 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3013 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3014 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3015 "-Dp not implemented on this platform\n");
3021 /* This routine handles any switches that can be given during run */
3024 Perl_moreswitches(pTHX_ const char *s)
3028 const char option = *s; /* used to remember option in -m/-M code */
3030 PERL_ARGS_ASSERT_MORESWITCHES;
3038 SvREFCNT_dec(PL_rs);
3039 if (s[1] == 'x' && s[2]) {
3040 const char *e = s+=2;
3046 flags = PERL_SCAN_SILENT_ILLDIGIT;
3047 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3048 if (s + numlen < e) {
3049 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3053 PL_rs = newSVpvs("");
3054 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3055 tmps = (U8*)SvPVX(PL_rs);
3056 uvchr_to_utf8(tmps, rschar);
3057 SvCUR_set(PL_rs, UNISKIP(rschar));
3062 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3063 if (rschar & ~((U8)~0))
3064 PL_rs = &PL_sv_undef;
3065 else if (!rschar && numlen >= 2)
3066 PL_rs = newSVpvs("");
3068 char ch = (char)rschar;
3069 PL_rs = newSVpvn(&ch, 1);
3072 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3077 PL_unicode = parse_unicode_opts( (const char **)&s );
3078 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3084 while (*s && !isSPACE(*s)) ++s;
3085 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3096 forbid_setid('d', FALSE);
3099 /* -dt indicates to the debugger that threads will be used */
3100 if (*s == 't' && !isALNUM(s[1])) {
3102 my_setenv("PERL5DB_THREADED", "1");
3105 /* The following permits -d:Mod to accepts arguments following an =
3106 in the fashion that -MSome::Mod does. */
3107 if (*s == ':' || *s == '=') {
3114 sv = newSVpvs("no Devel::");
3116 sv = newSVpvs("use Devel::");
3120 end = s + strlen(s);
3122 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3123 while(isALNUM(*s) || *s==':') ++s;
3125 sv_catpvn(sv, start, end - start);
3127 sv_catpvn(sv, start, s-start);
3128 /* Don't use NUL as q// delimiter here, this string goes in the
3130 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3133 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3137 PL_perldb = PERLDB_ALL;
3144 forbid_setid('D', FALSE);
3146 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3147 #else /* !DEBUGGING */
3148 if (ckWARN_d(WARN_DEBUGGING))
3149 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3150 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3151 for (s++; isALNUM(*s); s++) ;
3156 usage(PL_origargv[0]);
3159 Safefree(PL_inplace);
3160 #if defined(__CYGWIN__) /* do backup extension automagically */
3161 if (*(s+1) == '\0') {
3162 PL_inplace = savepvs(".bak");
3165 #endif /* __CYGWIN__ */
3167 const char * const start = ++s;
3168 while (*s && !isSPACE(*s))
3171 PL_inplace = savepvn(start, s - start);
3175 if (*s == '-') /* Additional switches on #! line. */
3179 case 'I': /* -I handled both here and in parse_body() */
3180 forbid_setid('I', FALSE);
3182 while (*s && isSPACE(*s))
3187 /* ignore trailing spaces (possibly followed by other switches) */
3189 for (e = p; *e && !isSPACE(*e); e++) ;
3193 } while (*p && *p != '-');
3195 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3201 Perl_croak(aTHX_ "No directory specified for -I");
3207 SvREFCNT_dec(PL_ors_sv);
3213 PL_ors_sv = newSVpvs("\n");
3214 numlen = 3 + (*s == '0');
3215 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3219 if (RsPARA(PL_rs)) {
3220 PL_ors_sv = newSVpvs("\n\n");
3223 PL_ors_sv = newSVsv(PL_rs);
3228 forbid_setid('M', FALSE); /* XXX ? */
3231 forbid_setid('m', FALSE); /* XXX ? */
3236 const char *use = "use ";
3238 /* -M-foo == 'no foo' */
3239 /* Leading space on " no " is deliberate, to make both
3240 possibilities the same length. */
3241 if (*s == '-') { use = " no "; ++s; }
3242 sv = newSVpvn(use,4);
3244 /* We allow -M'Module qw(Foo Bar)' */
3245 while(isALNUM(*s) || *s==':') {
3254 Perl_croak(aTHX_ "Module name required with -%c option",
3257 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3258 "contains single ':'",
3259 (int)(s - start), start, option);
3260 end = s + strlen(s);
3262 sv_catpvn(sv, start, end - start);
3263 if (option == 'm') {
3265 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3266 sv_catpvs( sv, " ()");
3269 sv_catpvn(sv, start, s-start);
3270 /* Use NUL as q''-delimiter. */
3271 sv_catpvs(sv, " split(/,/,q\0");
3273 sv_catpvn(sv, s, end - s);
3274 sv_catpvs(sv, "\0)");
3277 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3280 Perl_croak(aTHX_ "Missing argument to -%c", option);
3291 forbid_setid('s', FALSE);
3292 PL_doswitches = TRUE;
3306 PL_do_undump = TRUE;
3314 if (!sv_derived_from(PL_patchlevel, "version"))
3315 upg_version(PL_patchlevel, TRUE);
3318 SV* level= vstringify(PL_patchlevel);
3319 #ifdef PERL_PATCHNUM
3320 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3321 SV *num = newSVpvs(PERL_PATCHNUM "*");
3323 SV *num = newSVpvs(PERL_PATCHNUM);
3326 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3327 SvREFCNT_dec(level);
3330 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3334 PerlIO_printf(PerlIO_stdout(),
3335 "\nThis is perl " STRINGIFY(PERL_REVISION)
3336 ", version " STRINGIFY(PERL_VERSION)
3337 ", subversion " STRINGIFY(PERL_SUBVERSION)
3338 " (%"SVf") built for " ARCHNAME, level
3340 SvREFCNT_dec(level);
3343 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3344 PerlIO_printf(PerlIO_stdout(),
3345 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3346 SVfARG(vstringify(PL_patchlevel))));
3347 PerlIO_printf(PerlIO_stdout(),
3348 Perl_form(aTHX_ " built under %s at %s %s\n",
3349 OSNAME, __DATE__, __TIME__));
3350 PerlIO_printf(PerlIO_stdout(),
3351 Perl_form(aTHX_ " OS Specific Release: %s\n",
3354 #if defined(LOCAL_PATCH_COUNT)
3355 if (LOCAL_PATCH_COUNT > 0)
3356 PerlIO_printf(PerlIO_stdout(),
3357 "\n(with %d registered patch%s, "
3358 "see perl -V for more detail)",
3360 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3363 PerlIO_printf(PerlIO_stdout(),
3364 "\n\nCopyright 1987-2011, Larry Wall\n");
3366 PerlIO_printf(PerlIO_stdout(),
3367 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3370 PerlIO_printf(PerlIO_stdout(),
3371 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3372 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3375 PerlIO_printf(PerlIO_stdout(),
3376 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3377 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3380 PerlIO_printf(PerlIO_stdout(),
3381 "atariST series port, ++jrb bammi@cadence.com\n");
3384 PerlIO_printf(PerlIO_stdout(),
3385 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3388 PerlIO_printf(PerlIO_stdout(),
3389 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3392 PerlIO_printf(PerlIO_stdout(),
3393 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3396 PerlIO_printf(PerlIO_stdout(),
3397 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3400 PerlIO_printf(PerlIO_stdout(),
3401 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3404 PerlIO_printf(PerlIO_stdout(),
3405 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3408 PerlIO_printf(PerlIO_stdout(),
3409 "EPOC port by Olaf Flebbe, 1999-2002\n");
3412 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3413 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3416 #ifdef __SYMBIAN32__
3417 PerlIO_printf(PerlIO_stdout(),
3418 "Symbian port by Nokia, 2004-2005\n");
3420 #ifdef BINARY_BUILD_NOTICE
3421 BINARY_BUILD_NOTICE;
3423 PerlIO_printf(PerlIO_stdout(),
3425 Perl may be copied only under the terms of either the Artistic License or the\n\
3426 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3427 Complete documentation for Perl, including FAQ lists, should be found on\n\
3428 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3429 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3432 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3433 PL_dowarn |= G_WARN_ON;
3438 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3439 if (!specialWARN(PL_compiling.cop_warnings))
3440 PerlMemShared_free(PL_compiling.cop_warnings);
3441 PL_compiling.cop_warnings = pWARN_ALL ;
3445 PL_dowarn = G_WARN_ALL_OFF;
3446 if (!specialWARN(PL_compiling.cop_warnings))
3447 PerlMemShared_free(PL_compiling.cop_warnings);
3448 PL_compiling.cop_warnings = pWARN_NONE ;
3455 if (s[0] == '-') /* Additional switches on #! line. */
3460 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3466 #ifdef ALTERNATE_SHEBANG
3467 case 'S': /* OS/2 needs -S on "extproc" line. */
3471 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3476 /* compliments of Tom Christiansen */
3478 /* unexec() can be found in the Gnu emacs distribution */
3479 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3482 Perl_my_unexec(pTHX)
3484 PERL_UNUSED_CONTEXT;
3486 SV * prog = newSVpv(BIN_EXP, 0);
3487 SV * file = newSVpv(PL_origfilename, 0);
3491 sv_catpvs(prog, "/perl");
3492 sv_catpvs(file, ".perldump");
3494 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3495 /* unexec prints msg to stderr in case of failure */
3496 PerlProc_exit(status);
3499 # include <lib$routines.h>
3500 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3501 # elif defined(WIN32) || defined(__CYGWIN__)
3502 Perl_croak(aTHX_ "dump is not supported");
3504 ABORT(); /* for use with undump */
3509 /* initialize curinterp */
3515 # define PERLVAR(prefix,var,type)
3516 # define PERLVARA(prefix,var,n,type)
3517 # if defined(PERL_IMPLICIT_CONTEXT)
3518 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3519 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3521 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3522 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3524 # include "intrpvar.h"
3530 # define PERLVAR(prefix,var,type)
3531 # define PERLVARA(prefix,var,n,type)
3532 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3533 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3534 # include "intrpvar.h"
3541 /* As these are inside a structure, PERLVARI isn't capable of initialising
3543 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3544 PL_reg_poscache = PL_reg_starttry = NULL;
3548 S_init_main_stash(pTHX)
3553 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3554 /* We know that the string "main" will be in the global shared string
3555 table, so it's a small saving to use it rather than allocate another
3557 PL_curstname = newSVpvs_share("main");
3558 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3559 /* If we hadn't caused another reference to "main" to be in the shared
3560 string table above, then it would be worth reordering these two,
3561 because otherwise all we do is delete "main" from it as a consequence
3562 of the SvREFCNT_dec, only to add it again with hv_name_set */
3563 SvREFCNT_dec(GvHV(gv));
3564 hv_name_set(PL_defstash, "main", 4, 0);
3565 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3567 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3569 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3570 GvMULTI_on(PL_incgv);
3571 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3572 GvMULTI_on(PL_hintgv);
3573 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3574 SvREFCNT_inc_simple_void(PL_defgv);
3575 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3576 SvREFCNT_inc_simple_void(PL_errgv);
3577 GvMULTI_on(PL_errgv);
3578 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3579 GvMULTI_on(PL_replgv);
3580 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3581 #ifdef PERL_DONT_CREATE_GVSV
3584 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3586 SET_CURSTASH(PL_defstash);
3587 CopSTASH_set(&PL_compiling, PL_defstash);
3588 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3589 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3591 /* We must init $/ before switches are processed. */
3592 sv_setpvs(get_sv("/", GV_ADD), "\n");
3596 S_open_script(pTHX_ const char *scriptname, bool dosearch,
3597 bool *suidscript, PerlIO **rsfpp)
3602 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3605 PL_origfilename = savepvs("-e");
3608 /* if find_script() returns, it returns a malloc()-ed value */
3609 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3611 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3612 const char *s = scriptname + 8;
3618 * Tell apart "normal" usage of fdscript, e.g.
3619 * with bash on FreeBSD:
3620 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3621 * from usage in suidperl.
3622 * Does any "normal" usage leave garbage after the number???
3623 * Is it a mistake to use a similar /dev/fd/ construct for
3628 * Be supersafe and do some sanity-checks.
3629 * Still, can we be sure we got the right thing?
3632 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3635 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3637 scriptname = savepv(s + 1);
3638 Safefree(PL_origfilename);
3639 PL_origfilename = (char *)scriptname;
3644 CopFILE_free(PL_curcop);
3645 CopFILE_set(PL_curcop, PL_origfilename);
3646 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3647 scriptname = (char *)"";
3648 if (fdscript >= 0) {
3649 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3650 # if defined(HAS_FCNTL) && defined(F_SETFD)
3652 /* ensure close-on-exec */
3653 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3656 else if (!*scriptname) {
3657 forbid_setid(0, *suidscript);
3658 *rsfpp = PerlIO_stdin();
3661 #ifdef FAKE_BIT_BUCKET
3662 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3663 * is called) and still have the "-e" work. (Believe it or not,
3664 * a /dev/null is required for the "-e" to work because source
3665 * filter magic is used to implement it. ) This is *not* a general
3666 * replacement for a /dev/null. What we do here is create a temp
3667 * file (an empty file), open up that as the script, and then
3668 * immediately close and unlink it. Close enough for jazz. */
3669 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3670 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3671 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3672 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3673 FAKE_BIT_BUCKET_TEMPLATE
3675 const char * const err = "Failed to create a fake bit bucket";
3676 if (strEQ(scriptname, BIT_BUCKET)) {
3677 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3678 int tmpfd = mkstemp(tmpname);
3680 scriptname = tmpname;
3683 Perl_croak(aTHX_ err);
3686 scriptname = mktemp(tmpname);
3688 Perl_croak(aTHX_ err);
3693 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3694 #ifdef FAKE_BIT_BUCKET
3695 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3696 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3697 && strlen(scriptname) == sizeof(tmpname) - 1) {
3700 scriptname = BIT_BUCKET;
3702 # if defined(HAS_FCNTL) && defined(F_SETFD)
3704 /* ensure close-on-exec */
3705 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3709 /* PSz 16 Sep 03 Keep neat error message */
3711 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3713 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3714 CopFILE(PL_curcop), Strerror(errno));
3720 * I_SYSSTATVFS HAS_FSTATVFS
3722 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3723 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3724 * here so that metaconfig picks them up. */
3727 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3728 /* Don't even need this function. */
3731 S_validate_suid(pTHX_ PerlIO *rsfp)
3733 PERL_ARGS_ASSERT_VALIDATE_SUID;
3735 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3738 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3739 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3741 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3744 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3745 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3746 /* not set-id, must be wrapped */
3749 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3752 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3756 register const char *s2;
3758 PERL_ARGS_ASSERT_FIND_BEGINNING;
3760 /* skip forward in input to the real script? */
3763 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3764 Perl_croak(aTHX_ "No Perl script found in input\n");
3766 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3767 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3768 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3770 while (*s == ' ' || *s == '\t') s++;
3772 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3773 || s2[-1] == '_') s2--;
3774 if (strnEQ(s2-4,"perl",4))
3775 while ((s = moreswitches(s)))
3785 PL_uid = PerlProc_getuid();
3786 PL_euid = PerlProc_geteuid();
3787 PL_gid = PerlProc_getgid();
3788 PL_egid = PerlProc_getegid();
3790 PL_uid |= PL_gid << 16;
3791 PL_euid |= PL_egid << 16;
3793 /* Should not happen: */
3794 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3795 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3798 * Should go by suidscript, not uid!=euid: why disallow
3799 * system("ls") in scripts run from setuid things?
3800 * Or, is this run before we check arguments and set suidscript?
3801 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3802 * (We never have suidscript, can we be sure to have fdscript?)
3803 * Or must then go by UID checks? See comments in forbid_setid also.
3807 /* This is used very early in the lifetime of the program,
3808 * before even the options are parsed, so PL_tainting has
3809 * not been initialized properly. */
3811 Perl_doing_taint(int argc, char *argv[], char *envp[])
3813 #ifndef PERL_IMPLICIT_SYS
3814 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3815 * before we have an interpreter-- and the whole point of this
3816 * function is to be called at such an early stage. If you are on
3817 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3818 * "tainted because running with altered effective ids', you'll
3819 * have to add your own checks somewhere in here. The two most
3820 * known samples of 'implicitness' are Win32 and NetWare, neither
3821 * of which has much of concept of 'uids'. */
3822 int uid = PerlProc_getuid();
3823 int euid = PerlProc_geteuid();
3824 int gid = PerlProc_getgid();
3825 int egid = PerlProc_getegid();
3832 if (uid && (euid != uid || egid != gid))
3834 #endif /* !PERL_IMPLICIT_SYS */
3835 /* This is a really primitive check; environment gets ignored only
3836 * if -T are the first chars together; otherwise one gets
3837 * "Too late" message. */
3838 if ( argc > 1 && argv[1][0] == '-'
3839 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3844 /* Passing the flag as a single char rather than a string is a slight space
3845 optimisation. The only message that isn't /^-.$/ is
3846 "program input from stdin", which is substituted in place of '\0', which
3847 could never be a command line flag. */
3849 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3852 char string[3] = "-x";
3853 const char *message = "program input from stdin";
3860 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3861 if (PL_euid != PL_uid)
3862 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3863 if (PL_egid != PL_gid)
3864 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3865 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3867 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3871 Perl_init_dbargs(pTHX)
3873 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3878 /* Someone has already created it.
3879 It might have entries, and if we just turn off AvREAL(), they will
3880 "leak" until global destruction. */
3883 AvREIFY_only(PL_dbargs);
3887 Perl_init_debugger(pTHX)
3890 HV * const ostash = PL_curstash;
3892 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3894 Perl_init_dbargs(aTHX);
3895 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3896 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3897 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3898 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3899 if (!SvIOK(PL_DBsingle))
3900 sv_setiv(PL_DBsingle, 0);
3901 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3902 if (!SvIOK(PL_DBtrace))
3903 sv_setiv(PL_DBtrace, 0);
3904 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3905 if (!SvIOK(PL_DBsignal))
3906 sv_setiv(PL_DBsignal, 0);
3907 SvREFCNT_dec(PL_curstash);
3908 PL_curstash = ostash;
3911 #ifndef STRESS_REALLOC
3912 #define REASONABLE(size) (size)
3914 #define REASONABLE(size) (1) /* unreasonable */
3918 Perl_init_stacks(pTHX)
3921 /* start with 128-item stack and 8K cxstack */
3922 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3923 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3924 PL_curstackinfo->si_type = PERLSI_MAIN;
3925 PL_curstack = PL_curstackinfo->si_stack;
3926 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3928 PL_stack_base = AvARRAY(PL_curstack);
3929 PL_stack_sp = PL_stack_base;
3930 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3932 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3935 PL_tmps_max = REASONABLE(128);
3937 Newx(PL_markstack,REASONABLE(32),I32);
3938 PL_markstack_ptr = PL_markstack;
3939 PL_markstack_max = PL_markstack + REASONABLE(32);
3943 Newx(PL_scopestack,REASONABLE(32),I32);
3945 Newx(PL_scopestack_name,REASONABLE(32),const char*);
3947 PL_scopestack_ix = 0;
3948 PL_scopestack_max = REASONABLE(32);
3950 Newx(PL_savestack,REASONABLE(128),ANY);
3951 PL_savestack_ix = 0;
3952 PL_savestack_max = REASONABLE(128);
3961 while (PL_curstackinfo->si_next)
3962 PL_curstackinfo = PL_curstackinfo->si_next;
3963 while (PL_curstackinfo) {
3964 PERL_SI *p = PL_curstackinfo->si_prev;
3965 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3966 Safefree(PL_curstackinfo->si_cxstack);
3967 Safefree(PL_curstackinfo);
3968 PL_curstackinfo = p;
3970 Safefree(PL_tmps_stack);
3971 Safefree(PL_markstack);
3972 Safefree(PL_scopestack);
3974 Safefree(PL_scopestack_name);
3976 Safefree(PL_savestack);
3980 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
3982 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
3983 AV *const isa = GvAVn(gv);
3986 PERL_ARGS_ASSERT_POPULATE_ISA;
3988 if(AvFILLp(isa) != -1)
3991 /* NOTE: No support for tied ISA */
3993 va_start(args, len);
3995 const char *const parent = va_arg(args, const char*);
4000 parent_len = va_arg(args, size_t);
4002 /* Arguments are supplied with a trailing :: */
4003 assert(parent_len > 2);
4004 assert(parent[parent_len - 1] == ':');
4005 assert(parent[parent_len - 2] == ':');
4006 av_push(isa, newSVpvn(parent, parent_len - 2));
4007 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4014 S_init_predump_symbols(pTHX)
4020 sv_setpvs(get_sv("\"", GV_ADD), " ");
4021 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4024 /* Historically, PVIOs were blessed into IO::Handle, unless
4025 FileHandle was loaded, in which case they were blessed into
4026 that. Action at a distance.
4027 However, if we simply bless into IO::Handle, we break code
4028 that assumes that PVIOs will have (among others) a seek
4029 method. IO::File inherits from IO::Handle and IO::Seekable,
4030 and provides the needed methods. But if we simply bless into
4031 it, then we break code that assumed that by loading
4032 IO::Handle, *it* would work.
4033 So a compromise is to set up the correct @IO::File::ISA,
4034 so that code that does C<use IO::Handle>; will still work.
4037 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4038 STR_WITH_LEN("IO::Handle::"),
4039 STR_WITH_LEN("IO::Seekable::"),
4040 STR_WITH_LEN("Exporter::"),
4043 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4044 GvMULTI_on(PL_stdingv);
4045 io = GvIOp(PL_stdingv);
4046 IoTYPE(io) = IoTYPE_RDONLY;
4047 IoIFP(io) = PerlIO_stdin();
4048 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4050 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4052 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4055 IoTYPE(io) = IoTYPE_WRONLY;
4056 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4058 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4060 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4062 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4063 GvMULTI_on(PL_stderrgv);
4064 io = GvIOp(PL_stderrgv);
4065 IoTYPE(io) = IoTYPE_WRONLY;
4066 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4067 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4069 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4071 PL_statname = newSV(0); /* last filename we did stat on */
4075 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4079 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4081 argc--,argv++; /* skip name of script */
4082 if (PL_doswitches) {
4083 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4087 if (argv[0][1] == '-' && !argv[0][2]) {
4091 if ((s = strchr(argv[0], '='))) {
4092 const char *const start_name = argv[0] + 1;
4093 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4094 TRUE, SVt_PV)), s + 1);
4097 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4100 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4101 GvMULTI_on(PL_argvgv);
4102 (void)gv_AVadd(PL_argvgv);
4103 av_clear(GvAVn(PL_argvgv));
4104 for (; argc > 0; argc--,argv++) {
4105 SV * const sv = newSVpv(argv[0],0);
4106 av_push(GvAVn(PL_argvgv),sv);
4107 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4108 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4111 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4112 (void)sv_utf8_decode(sv);
4118 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4123 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4125 PL_toptarget = newSV_type(SVt_PVFM);
4126 sv_setpvs(PL_toptarget, "");
4127 PL_bodytarget = newSV_type(SVt_PVFM);
4128 sv_setpvs(PL_bodytarget, "");
4129 PL_formtarget = PL_bodytarget;
4133 init_argv_symbols(argc,argv);
4135 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4136 sv_setpv(GvSV(tmpgv),PL_origfilename);
4138 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4140 bool env_is_not_environ;
4141 GvMULTI_on(PL_envgv);
4142 hv = GvHVn(PL_envgv);
4143 hv_magic(hv, NULL, PERL_MAGIC_env);
4145 #ifdef USE_ENVIRON_ARRAY
4146 /* Note that if the supplied env parameter is actually a copy
4147 of the global environ then it may now point to free'd memory
4148 if the environment has been modified since. To avoid this
4149 problem we treat env==NULL as meaning 'use the default'
4153 env_is_not_environ = env != environ;
4154 if (env_is_not_environ
4155 # ifdef USE_ITHREADS
4156 && PL_curinterp == aTHX
4165 for (; *env; env++) {
4168 if (!(s = strchr(old_var,'=')) || s == old_var)
4171 #if defined(MSDOS) && !defined(DJGPP)
4173 (void)strupr(old_var);
4176 sv = newSVpv(s+1, 0);
4177 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4178 if (env_is_not_environ)
4182 #endif /* USE_ENVIRON_ARRAY */
4183 #endif /* !PERL_MICRO */
4186 #ifdef THREADS_HAVE_PIDS
4187 PL_ppid = (IV)getppid();
4190 /* touch @F array to prevent spurious warnings 20020415 MJD */
4192 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4197 S_init_perllib(pTHX)
4201 const char *perl5lib = NULL;
4204 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4210 perl5lib = PerlEnv_getenv("PERL5LIB");
4212 * It isn't possible to delete an environment variable with
4213 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4214 * case we treat PERL5LIB as undefined if it has a zero-length value.
4216 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4217 if (perl5lib && *perl5lib != '\0')
4221 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4223 s = PerlEnv_getenv("PERLLIB");
4225 incpush_use_sep(s, 0, 0);
4228 /* Treat PERL5?LIB as a possible search list logical name -- the
4229 * "natural" VMS idiom for a Unix path string. We allow each
4230 * element to be a set of |-separated directories for compatibility.
4234 if (my_trnlnm("PERL5LIB",buf,0))
4236 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4237 } while (my_trnlnm("PERL5LIB",buf,++idx));
4239 while (my_trnlnm("PERLLIB",buf,idx++))
4240 incpush_use_sep(buf, 0, 0);
4245 #ifndef PERL_IS_MINIPERL
4246 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4247 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4249 /* Use the ~-expanded versions of APPLLIB (undocumented),
4250 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4253 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4254 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4258 /* sitearch is always relative to sitelib on Windows for
4259 * DLL-based path intuition to work correctly */
4260 # if !defined(WIN32)
4261 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4262 INCPUSH_CAN_RELOCATE);
4268 /* this picks up sitearch as well */
4269 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4271 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4273 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4277 #ifdef PERL_VENDORARCH_EXP
4278 /* vendorarch is always relative to vendorlib on Windows for
4279 * DLL-based path intuition to work correctly */
4280 # if !defined(WIN32)
4281 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4282 INCPUSH_CAN_RELOCATE);
4286 #ifdef PERL_VENDORLIB_EXP
4288 /* this picks up vendorarch as well */
4289 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4291 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4293 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4294 INCPUSH_CAN_RELOCATE);
4299 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4303 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4307 s = win32_get_privlib(PERL_FS_VERSION, &len);
4309 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4312 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4314 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4318 #ifdef PERL_OTHERLIBDIRS
4319 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4320 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4321 |INCPUSH_CAN_RELOCATE);
4327 * It isn't possible to delete an environment variable with
4328 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4329 * case we treat PERL5LIB as undefined if it has a zero-length value.
4331 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4332 if (perl5lib && *perl5lib != '\0')
4336 incpush_use_sep(perl5lib, 0,
4337 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4339 /* Treat PERL5?LIB as a possible search list logical name -- the
4340 * "natural" VMS idiom for a Unix path string. We allow each
4341 * element to be a set of |-separated directories for compatibility.
4345 if (my_trnlnm("PERL5LIB",buf,0))
4347 incpush_use_sep(buf, 0,
4348 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4349 } while (my_trnlnm("PERL5LIB",buf,++idx));
4353 /* Use the ~-expanded versions of APPLLIB (undocumented),
4354 SITELIB and VENDORLIB for older versions
4357 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4358 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4361 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4362 /* Search for version-specific dirs below here */
4363 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4364 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4368 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4369 /* Search for version-specific dirs below here */
4370 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4371 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4374 #ifdef PERL_OTHERLIBDIRS
4375 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4376 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4377 |INCPUSH_CAN_RELOCATE);
4379 #endif /* !PERL_IS_MINIPERL */
4382 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4385 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4386 # define PERLLIB_SEP ';'
4389 # define PERLLIB_SEP '|'
4391 # define PERLLIB_SEP ':'
4394 #ifndef PERLLIB_MANGLE
4395 # define PERLLIB_MANGLE(s,n) (s)
4398 #ifndef PERL_IS_MINIPERL
4399 /* Push a directory onto @INC if it exists.
4400 Generate a new SV if we do this, to save needing to copy the SV we push
4403 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4408 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4410 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4411 S_ISDIR(tmpstatbuf.st_mode)) {
4413 dir = newSVsv(stem);
4415 /* Truncate dir back to stem. */
4416 SvCUR_set(dir, SvCUR(stem));
4423 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4426 #ifndef PERL_IS_MINIPERL
4427 const U8 using_sub_dirs
4428 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4429 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4430 const U8 add_versioned_sub_dirs
4431 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4432 const U8 add_archonly_sub_dirs
4433 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4434 #ifdef PERL_INC_VERSION_LIST
4435 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4438 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4439 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4440 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4441 AV *const inc = GvAVn(PL_incgv);
4443 PERL_ARGS_ASSERT_INCPUSH;
4446 /* Could remove this vestigial extra block, if we don't mind a lot of
4447 re-indenting diff noise. */
4450 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4451 arranged to unshift #! line -I onto the front of @INC. However,
4452 -I can add version and architecture specific libraries, and they
4453 need to go first. The old code assumed that it was always
4454 pushing. Hence to make it work, need to push the architecture
4455 (etc) libraries onto a temporary array, then "unshift" that onto
4456 the front of @INC. */
4457 #ifndef PERL_IS_MINIPERL
4458 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4462 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4463 defined to so something (in os2/os2.c), but the code has been
4464 this way, ignoring any possible changed of length, since
4465 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4467 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4469 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4476 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4478 while (unix[len-1] == '/') len--; /* Cosmetic */
4479 sv_usepvn(libdir,unix,len);
4482 PerlIO_printf(Perl_error_log,
4483 "Failed to unixify @INC element \"%s\"\n",
4487 /* Do the if() outside the #ifdef to avoid warnings about an unused
4490 #ifdef PERL_RELOCATABLE_INC
4492 * Relocatable include entries are marked with a leading .../
4495 * 0: Remove that leading ".../"
4496 * 1: Remove trailing executable name (anything after the last '/')
4497 * from the perl path to give a perl prefix
4499 * While the @INC element starts "../" and the prefix ends with a real
4500 * directory (ie not . or ..) chop that real directory off the prefix
4501 * and the leading "../" from the @INC element. ie a logical "../"
4503 * Finally concatenate the prefix and the remainder of the @INC element
4504 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4505 * generates /usr/local/lib/perl5
4507 const char *libpath = SvPVX(libdir);
4508 STRLEN libpath_len = SvCUR(libdir);
4509 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4511 SV * const caret_X = get_sv("\030", 0);
4512 /* Going to use the SV just as a scratch buffer holding a C
4518 /* $^X is *the* source of taint if tainting is on, hence
4519 SvPOK() won't be true. */
4521 assert(SvPOKp(caret_X));
4522 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4524 /* Firstly take off the leading .../
4525 If all else fail we'll do the paths relative to the current
4527 sv_chop(libdir, libpath + 4);
4528 /* Don't use SvPV as we're intentionally bypassing taining,
4529 mortal copies that the mg_get of tainting creates, and
4530 corruption that seems to come via the save stack.
4531 I guess that the save stack isn't correctly set up yet. */
4532 libpath = SvPVX(libdir);
4533 libpath_len = SvCUR(libdir);
4535 /* This would work more efficiently with memrchr, but as it's
4536 only a GNU extension we'd need to probe for it and
4537 implement our own. Not hard, but maybe not worth it? */
4539 prefix = SvPVX(prefix_sv);
4540 lastslash = strrchr(prefix, '/');
4542 /* First time in with the *lastslash = '\0' we just wipe off
4543 the trailing /perl from (say) /usr/foo/bin/perl
4547 while ((*lastslash = '\0'), /* Do that, come what may. */
4548 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4549 && (lastslash = strrchr(prefix, '/')))) {
4550 if (lastslash[1] == '\0'
4551 || (lastslash[1] == '.'
4552 && (lastslash[2] == '/' /* ends "/." */
4553 || (lastslash[2] == '/'
4554 && lastslash[3] == '/' /* or "/.." */
4556 /* Prefix ends "/" or "/." or "/..", any of which
4557 are fishy, so don't do any more logical cleanup.
4561 /* Remove leading "../" from path */
4564 /* Next iteration round the loop removes the last
4565 directory name from prefix by writing a '\0' in
4566 the while clause. */
4568 /* prefix has been terminated with a '\0' to the correct
4569 length. libpath points somewhere into the libdir SV.
4570 We need to join the 2 with '/' and drop the result into
4572 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4573 SvREFCNT_dec(libdir);
4574 /* And this is the new libdir. */
4577 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4578 /* Need to taint relocated paths if running set ID */
4579 SvTAINTED_on(libdir);
4582 SvREFCNT_dec(prefix_sv);
4586 #ifndef PERL_IS_MINIPERL
4588 * BEFORE pushing libdir onto @INC we may first push version- and
4589 * archname-specific sub-directories.
4591 if (using_sub_dirs) {
4593 #ifdef PERL_INC_VERSION_LIST
4594 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4595 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4596 const char * const *incver;
4598 subdir = newSVsv(libdir);
4600 if (add_versioned_sub_dirs) {
4601 /* .../version/archname if -d .../version/archname */
4602 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4603 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4605 /* .../version if -d .../version */
4606 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4607 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4610 #ifdef PERL_INC_VERSION_LIST
4612 for (incver = incverlist; *incver; incver++) {
4613 /* .../xxx if -d .../xxx */
4614 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4615 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4620 if (add_archonly_sub_dirs) {
4621 /* .../archname if -d .../archname */
4622 sv_catpvs(subdir, "/" ARCHNAME);
4623 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4627 assert (SvREFCNT(subdir) == 1);
4628 SvREFCNT_dec(subdir);
4630 #endif /* !PERL_IS_MINIPERL */
4631 /* finally add this lib directory at the end of @INC */
4633 #ifdef PERL_IS_MINIPERL
4634 const U32 extra = 0;
4636 U32 extra = av_len(av) + 1;
4638 av_unshift(inc, extra + push_basedir);
4640 av_store(inc, extra, libdir);
4641 #ifndef PERL_IS_MINIPERL
4643 /* av owns a reference, av_store() expects to be donated a
4644 reference, and av expects to be sane when it's cleared.
4645 If I wanted to be naughty and wrong, I could peek inside the
4646 implementation of av_clear(), realise that it uses
4647 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4648 and so directly steal from it (with a memcpy() to inc, and
4649 then memset() to NULL them out. But people copy code from the
4650 core expecting it to be best practise, so let's use the API.
4651 Although studious readers will note that I'm not checking any
4653 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4658 else if (push_basedir) {
4659 av_push(inc, libdir);
4662 if (!push_basedir) {
4663 assert (SvREFCNT(libdir) == 1);
4664 SvREFCNT_dec(libdir);
4670 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4674 /* This logic has been broken out from S_incpush(). It may be possible to
4677 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4679 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4680 * argument to incpush_use_sep. This allows creation of relocatable
4681 * Perl distributions that patch the binary at install time. Those
4682 * distributions will have to provide their own relocation tools; this
4683 * is not a feature otherwise supported by core Perl.
4685 #ifndef PERL_RELOCATABLE_INCPUSH
4692 /* Break at all separators */
4693 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4695 /* skip any consecutive separators */
4697 /* Uncomment the next line for PATH semantics */
4698 /* But you'll need to write tests */
4699 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4701 incpush(p, (STRLEN)(s - p), flags);
4706 incpush(p, (STRLEN)(end - p), flags);
4711 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4715 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4721 PERL_ARGS_ASSERT_CALL_LIST;
4723 while (av_len(paramList) >= 0) {
4724 cv = MUTABLE_CV(av_shift(paramList));
4726 if (paramList == PL_beginav) {
4727 /* save PL_beginav for compiler */
4728 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4730 else if (paramList == PL_checkav) {
4731 /* save PL_checkav for compiler */
4732 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4734 else if (paramList == PL_unitcheckav) {
4735 /* save PL_unitcheckav for compiler */
4736 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4747 PL_madskills |= 16384;
4752 PL_madskills &= ~16384;
4755 (void)SvPV_const(atsv, len);
4757 PL_curcop = &PL_compiling;
4758 CopLINE_set(PL_curcop, oldline);
4759 if (paramList == PL_beginav)
4760 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4762 Perl_sv_catpvf(aTHX_ atsv,
4763 "%s failed--call queue aborted",
4764 paramList == PL_checkav ? "CHECK"
4765 : paramList == PL_initav ? "INIT"
4766 : paramList == PL_unitcheckav ? "UNITCHECK"
4768 while (PL_scopestack_ix > oldscope)
4771 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4778 /* my_exit() was called */
4779 while (PL_scopestack_ix > oldscope)
4782 SET_CURSTASH(PL_defstash);
4783 PL_curcop = &PL_compiling;
4784 CopLINE_set(PL_curcop, oldline);
4790 PL_curcop = &PL_compiling;
4791 CopLINE_set(PL_curcop, oldline);
4794 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4803 Perl_my_exit(pTHX_ U32 status)
4814 STATUS_EXIT_SET(status);
4821 Perl_my_failure_exit(pTHX)
4825 /* We have been called to fall on our sword. The desired exit code
4826 * should be already set in STATUS_UNIX, but could be shifted over
4827 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4830 * If an error code has not been set, then force the issue.
4832 if (MY_POSIX_EXIT) {
4834 /* According to the die_exit.t tests, if errno is non-zero */
4835 /* It should be used for the error status. */
4837 if (errno == EVMSERR) {
4838 STATUS_NATIVE = vaxc$errno;
4841 /* According to die_exit.t tests, if the child_exit code is */
4842 /* also zero, then we need to exit with a code of 255 */
4843 if ((errno != 0) && (errno < 256))
4844 STATUS_UNIX_EXIT_SET(errno);
4845 else if (STATUS_UNIX < 255) {
4846 STATUS_UNIX_EXIT_SET(255);
4851 /* The exit code could have been set by $? or vmsish which
4852 * means that it may not have fatal set. So convert
4853 * success/warning codes to fatal with out changing
4854 * the POSIX status code. The severity makes VMS native
4855 * status handling work, while UNIX mode programs use the
4856 * the POSIX exit codes.
4858 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4859 STATUS_NATIVE &= STS$M_COND_ID;
4860 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4864 /* Traditionally Perl on VMS always expects a Fatal Error. */
4865 if (vaxc$errno & 1) {
4867 /* So force success status to failure */
4868 if (STATUS_NATIVE & 1)
4873 STATUS_UNIX = EINTR; /* In case something cares */
4878 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4880 /* Encode the severity code */
4881 severity = STATUS_NATIVE & STS$M_SEVERITY;
4882 STATUS_UNIX = (severity ? severity : 1) << 8;
4884 /* Perl expects this to be a fatal error */
4885 if (severity != STS$K_SEVERE)
4894 STATUS_UNIX_SET(errno);
4896 exitstatus = STATUS_UNIX >> 8;
4897 if (exitstatus & 255)
4898 STATUS_UNIX_SET(exitstatus);
4900 STATUS_UNIX_SET(255);
4907 S_my_exit_jump(pTHX)
4912 SvREFCNT_dec(PL_e_script);
4916 POPSTACK_TO(PL_mainstack);
4924 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4927 const char * const p = SvPVX_const(PL_e_script);
4928 const char *nl = strchr(p, '\n');
4930 PERL_UNUSED_ARG(idx);
4931 PERL_UNUSED_ARG(maxlen);
4933 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4935 filter_del(read_e_script);
4938 sv_catpvn(buf_sv, p, nl-p);
4939 sv_chop(PL_e_script, nl);
4945 * c-indentation-style: bsd
4947 * indent-tabs-mode: t
4950 * ex: set ts=8 sts=4 sw=4 noet: