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_ascii);
987 SvREFCNT_dec(PL_utf8_alpha);
988 SvREFCNT_dec(PL_utf8_space);
989 SvREFCNT_dec(PL_utf8_cntrl);
990 SvREFCNT_dec(PL_utf8_graph);
991 SvREFCNT_dec(PL_utf8_digit);
992 SvREFCNT_dec(PL_utf8_upper);
993 SvREFCNT_dec(PL_utf8_lower);
994 SvREFCNT_dec(PL_utf8_print);
995 SvREFCNT_dec(PL_utf8_punct);
996 SvREFCNT_dec(PL_utf8_xdigit);
997 SvREFCNT_dec(PL_utf8_mark);
998 SvREFCNT_dec(PL_utf8_toupper);
999 SvREFCNT_dec(PL_utf8_totitle);
1000 SvREFCNT_dec(PL_utf8_tolower);
1001 SvREFCNT_dec(PL_utf8_tofold);
1002 SvREFCNT_dec(PL_utf8_idstart);
1003 SvREFCNT_dec(PL_utf8_idcont);
1004 SvREFCNT_dec(PL_utf8_foldclosures);
1005 PL_utf8_alnum = NULL;
1006 PL_utf8_ascii = NULL;
1007 PL_utf8_alpha = NULL;
1008 PL_utf8_space = NULL;
1009 PL_utf8_cntrl = NULL;
1010 PL_utf8_graph = NULL;
1011 PL_utf8_digit = NULL;
1012 PL_utf8_upper = NULL;
1013 PL_utf8_lower = NULL;
1014 PL_utf8_print = NULL;
1015 PL_utf8_punct = NULL;
1016 PL_utf8_xdigit = NULL;
1017 PL_utf8_mark = NULL;
1018 PL_utf8_toupper = NULL;
1019 PL_utf8_totitle = NULL;
1020 PL_utf8_tolower = NULL;
1021 PL_utf8_tofold = NULL;
1022 PL_utf8_idstart = NULL;
1023 PL_utf8_idcont = NULL;
1024 PL_utf8_foldclosures = NULL;
1026 if (!specialWARN(PL_compiling.cop_warnings))
1027 PerlMemShared_free(PL_compiling.cop_warnings);
1028 PL_compiling.cop_warnings = NULL;
1029 cophh_free(CopHINTHASH_get(&PL_compiling));
1030 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1031 CopFILE_free(&PL_compiling);
1032 CopSTASH_free(&PL_compiling);
1034 /* Prepare to destruct main symbol table. */
1037 /* break ref loop *:: <=> %:: */
1038 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1041 SvREFCNT_dec(PL_curstname);
1042 PL_curstname = NULL;
1044 /* clear queued errors */
1045 SvREFCNT_dec(PL_errors);
1048 SvREFCNT_dec(PL_isarev);
1051 if (destruct_level >= 2) {
1052 if (PL_scopestack_ix != 0)
1053 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1054 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1055 (long)PL_scopestack_ix);
1056 if (PL_savestack_ix != 0)
1057 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1058 "Unbalanced saves: %ld more saves than restores\n",
1059 (long)PL_savestack_ix);
1060 if (PL_tmps_floor != -1)
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1062 (long)PL_tmps_floor + 1);
1063 if (cxstack_ix != -1)
1064 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1065 (long)cxstack_ix + 1);
1068 #ifdef PERL_IMPLICIT_CONTEXT
1069 /* the entries in this list are allocated via SV PVX's, so get freed
1070 * in sv_clean_all */
1071 Safefree(PL_my_cxt_list);
1074 /* Now absolutely destruct everything, somehow or other, loops or no. */
1076 /* the 2 is for PL_fdpid and PL_strtab */
1077 while (sv_clean_all() > 2)
1080 AvREAL_off(PL_fdpid); /* no surviving entries */
1081 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1084 #ifdef HAVE_INTERP_INTERN
1088 /* Destruct the global string table. */
1090 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1091 * so that sv_free() won't fail on them.
1092 * Now that the global string table is using a single hunk of memory
1093 * for both HE and HEK, we either need to explicitly unshare it the
1094 * correct way, or actually free things here.
1097 const I32 max = HvMAX(PL_strtab);
1098 HE * const * const array = HvARRAY(PL_strtab);
1099 HE *hent = array[0];
1102 if (hent && ckWARN_d(WARN_INTERNAL)) {
1103 HE * const next = HeNEXT(hent);
1104 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1105 "Unbalanced string table refcount: (%ld) for \"%s\"",
1106 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1113 hent = array[riter];
1118 HvARRAY(PL_strtab) = 0;
1119 HvTOTALKEYS(PL_strtab) = 0;
1121 SvREFCNT_dec(PL_strtab);
1124 /* free the pointer tables used for cloning */
1125 ptr_table_free(PL_ptr_table);
1126 PL_ptr_table = (PTR_TBL_t*)NULL;
1129 /* free special SVs */
1131 SvREFCNT(&PL_sv_yes) = 0;
1132 sv_clear(&PL_sv_yes);
1133 SvANY(&PL_sv_yes) = NULL;
1134 SvFLAGS(&PL_sv_yes) = 0;
1136 SvREFCNT(&PL_sv_no) = 0;
1137 sv_clear(&PL_sv_no);
1138 SvANY(&PL_sv_no) = NULL;
1139 SvFLAGS(&PL_sv_no) = 0;
1143 for (i=0; i<=2; i++) {
1144 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1145 sv_clear(PERL_DEBUG_PAD(i));
1146 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1147 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1151 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1154 #ifdef DEBUG_LEAKING_SCALARS
1155 if (PL_sv_count != 0) {
1160 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1161 svend = &sva[SvREFCNT(sva)];
1162 for (sv = sva + 1; sv < svend; ++sv) {
1163 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1164 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1166 " refcnt=%"UVuf pTHX__FORMAT "\n"
1167 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1169 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1171 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1173 sv->sv_debug_inpad ? "for" : "by",
1174 sv->sv_debug_optype ?
1175 PL_op_name[sv->sv_debug_optype]: "(none)",
1176 PTR2UV(sv->sv_debug_parent),
1179 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1180 Perl_dump_sv_child(aTHX_ sv);
1186 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1190 /* Wait for up to 4 seconds for child to terminate.
1191 This seems to be the least effort way of timing out on reaping
1193 struct timeval waitfor = {4, 0};
1194 int sock = PL_dumper_fd;
1198 FD_SET(sock, &rset);
1199 select(sock + 1, &rset, NULL, NULL, &waitfor);
1200 waitpid(child, &status, WNOHANG);
1205 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1211 #ifdef PERL_DEBUG_READONLY_OPS
1217 #if defined(PERLIO_LAYERS)
1218 /* No more IO - including error messages ! */
1219 PerlIO_cleanup(aTHX);
1222 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1223 as currently layers use it rather than NULL as a marker
1224 for no arg - and will try and SvREFCNT_dec it.
1226 SvREFCNT(&PL_sv_undef) = 0;
1227 SvREADONLY_off(&PL_sv_undef);
1229 Safefree(PL_origfilename);
1230 PL_origfilename = NULL;
1231 Safefree(PL_reg_start_tmp);
1232 PL_reg_start_tmp = (char**)NULL;
1233 PL_reg_start_tmpl = 0;
1234 Safefree(PL_reg_curpm);
1235 Safefree(PL_reg_poscache);
1236 free_tied_hv_pool();
1237 Safefree(PL_op_mask);
1238 Safefree(PL_psig_name);
1239 PL_psig_name = (SV**)NULL;
1240 PL_psig_ptr = (SV**)NULL;
1242 /* We need to NULL PL_psig_pend first, so that
1243 signal handlers know not to use it */
1244 int *psig_save = PL_psig_pend;
1245 PL_psig_pend = (int*)NULL;
1246 Safefree(psig_save);
1250 PL_tainting = FALSE;
1251 PL_taint_warn = FALSE;
1252 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1255 DEBUG_P(debprofdump());
1257 #ifdef USE_REENTRANT_API
1258 Perl_reentrant_free(aTHX);
1263 while (PL_regmatch_slab) {
1264 regmatch_slab *s = PL_regmatch_slab;
1265 PL_regmatch_slab = PL_regmatch_slab->next;
1269 /* As the absolutely last thing, free the non-arena SV for mess() */
1272 /* we know that type == SVt_PVMG */
1274 /* it could have accumulated taint magic */
1277 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1278 moremagic = mg->mg_moremagic;
1279 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1281 Safefree(mg->mg_ptr);
1285 /* we know that type >= SVt_PV */
1286 SvPV_free(PL_mess_sv);
1287 Safefree(SvANY(PL_mess_sv));
1288 Safefree(PL_mess_sv);
1295 =for apidoc perl_free
1297 Releases a Perl interpreter. See L<perlembed>.
1307 PERL_ARGS_ASSERT_PERL_FREE;
1309 if (PL_veto_cleanup)
1312 #ifdef PERL_TRACK_MEMPOOL
1315 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1316 * value as we're probably hunting memory leaks then
1318 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1319 if (!s || atoi(s) == 0) {
1320 const U32 old_debug = PL_debug;
1321 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1322 thread at thread exit. */
1324 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1325 "free this thread's memory\n");
1326 PL_debug &= ~ DEBUG_m_FLAG;
1328 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1329 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1330 PL_debug = old_debug;
1335 #if defined(WIN32) || defined(NETWARE)
1336 # if defined(PERL_IMPLICIT_SYS)
1339 void *host = nw_internal_host;
1341 void *host = w32_internal_host;
1343 PerlMem_free(aTHXx);
1345 nw_delete_internal_host(host);
1347 win32_delete_internal_host(host);
1351 PerlMem_free(aTHXx);
1354 PerlMem_free(aTHXx);
1358 #if defined(USE_ITHREADS)
1359 /* provide destructors to clean up the thread key when libperl is unloaded */
1360 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1362 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1363 #pragma fini "perl_fini"
1364 #elif defined(__sun) && !defined(__GNUC__)
1365 #pragma fini (perl_fini)
1369 #if defined(__GNUC__)
1370 __attribute__((destructor))
1375 if (PL_curinterp && !PL_veto_cleanup)
1380 #endif /* THREADS */
1383 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1386 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1387 PL_exitlist[PL_exitlistlen].fn = fn;
1388 PL_exitlist[PL_exitlistlen].ptr = ptr;
1393 S_set_caret_X(pTHX) {
1395 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1397 SV *const caret_x = GvSV(tmpgv);
1399 sv_setpv(caret_x, os2_execname(aTHX));
1401 # ifdef USE_KERN_PROC_PATHNAME
1406 mib[2] = KERN_PROC_PATHNAME;
1409 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1410 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1411 sv_grow(caret_x, size);
1413 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1415 SvPOK_only(caret_x);
1416 SvCUR_set(caret_x, size - 1);
1421 # elif defined(USE_NSGETEXECUTABLEPATH)
1423 uint32_t size = sizeof(buf);
1426 _NSGetExecutablePath(buf, &size);
1427 if (size < MAXPATHLEN * MAXPATHLEN) {
1428 sv_grow(caret_x, size);
1429 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1430 char *const tidied = realpath(SvPVX(caret_x), NULL);
1432 sv_setpv(caret_x, tidied);
1435 SvPOK_only(caret_x);
1436 SvCUR_set(caret_x, size);
1441 # elif defined(HAS_PROCSELFEXE)
1442 char buf[MAXPATHLEN];
1443 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1445 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1446 includes a spurious NUL which will cause $^X to fail in system
1447 or backticks (this will prevent extensions from being built and
1448 many tests from working). readlink is not meant to add a NUL.
1449 Normal readlink works fine.
1451 if (len > 0 && buf[len-1] == '\0') {
1455 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1456 returning the text "unknown" from the readlink rather than the path
1457 to the executable (or returning an error from the readlink). Any
1458 valid path has a '/' in it somewhere, so use that to validate the
1459 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1461 if (len > 0 && memchr(buf, '/', len)) {
1462 sv_setpvn(caret_x, buf, len);
1466 /* Fallback to this: */
1467 sv_setpv(caret_x, PL_origargv[0]);
1473 =for apidoc perl_parse
1475 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1481 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1488 PERL_ARGS_ASSERT_PERL_PARSE;
1489 #ifndef MULTIPLICITY
1490 PERL_UNUSED_ARG(my_perl);
1493 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1494 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1495 * This MUST be done before any hash stores or fetches take place.
1496 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
1497 * yourself, it is your responsibility to provide a good random seed!
1498 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1499 if (!PL_rehash_seed_set)
1500 PL_rehash_seed = get_hash_seed();
1502 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1504 if (s && (atoi(s) == 1))
1505 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1507 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1512 if (PL_origalen != 0) {
1513 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1516 /* Set PL_origalen be the sum of the contiguous argv[]
1517 * elements plus the size of the env in case that it is
1518 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1519 * as the maximum modifiable length of $0. In the worst case
1520 * the area we are able to modify is limited to the size of
1521 * the original argv[0]. (See below for 'contiguous', though.)
1523 const char *s = NULL;
1526 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1527 /* Do the mask check only if the args seem like aligned. */
1529 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1531 /* See if all the arguments are contiguous in memory. Note
1532 * that 'contiguous' is a loose term because some platforms
1533 * align the argv[] and the envp[]. If the arguments look
1534 * like non-aligned, assume that they are 'strictly' or
1535 * 'traditionally' contiguous. If the arguments look like
1536 * aligned, we just check that they are within aligned
1537 * PTRSIZE bytes. As long as no system has something bizarre
1538 * like the argv[] interleaved with some other data, we are
1539 * fine. (Did I just evoke Murphy's Law?) --jhi */
1540 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1542 for (i = 1; i < PL_origargc; i++) {
1543 if ((PL_origargv[i] == s + 1
1545 || PL_origargv[i] == s + 2
1550 (PL_origargv[i] > s &&
1552 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1563 #ifndef PERL_USE_SAFE_PUTENV
1564 /* Can we grab env area too to be used as the area for $0? */
1565 if (s && PL_origenviron && !PL_use_safe_putenv) {
1566 if ((PL_origenviron[0] == s + 1)
1569 (PL_origenviron[0] > s &&
1570 PL_origenviron[0] <=
1571 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1574 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1575 s = PL_origenviron[0];
1578 my_setenv("NoNe SuCh", NULL);
1579 /* Force copy of environment. */
1580 for (i = 1; PL_origenviron[i]; i++) {
1581 if (PL_origenviron[i] == s + 1
1584 (PL_origenviron[i] > s &&
1585 PL_origenviron[i] <=
1586 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1589 s = PL_origenviron[i];
1597 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1599 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1604 /* Come here if running an undumped a.out. */
1606 PL_origfilename = savepv(argv[0]);
1607 PL_do_undump = FALSE;
1608 cxstack_ix = -1; /* start label stack again */
1610 assert (!PL_tainted);
1612 S_set_caret_X(aTHX);
1614 init_postdump_symbols(argc,argv,env);
1619 op_free(PL_main_root);
1620 PL_main_root = NULL;
1622 PL_main_start = NULL;
1623 SvREFCNT_dec(PL_main_cv);
1627 oldscope = PL_scopestack_ix;
1628 PL_dowarn = G_WARN_OFF;
1633 parse_body(env,xsinit);
1634 if (PL_unitcheckav) {
1635 call_list(oldscope, PL_unitcheckav);
1638 PERL_SET_PHASE(PERL_PHASE_CHECK);
1639 call_list(oldscope, PL_checkav);
1647 /* my_exit() was called */
1648 while (PL_scopestack_ix > oldscope)
1651 PL_curstash = PL_defstash;
1652 if (PL_unitcheckav) {
1653 call_list(oldscope, PL_unitcheckav);
1656 PERL_SET_PHASE(PERL_PHASE_CHECK);
1657 call_list(oldscope, PL_checkav);
1662 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1670 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1671 miniperl, and we need to see those flags reflected in the values here. */
1673 /* What this returns is subject to change. Use the public interface in Config.
1676 S_Internals_V(pTHX_ CV *cv)
1679 #ifdef LOCAL_PATCH_COUNT
1680 const int local_patch_count = LOCAL_PATCH_COUNT;
1682 const int local_patch_count = 0;
1684 const int entries = 3 + local_patch_count;
1686 static char non_bincompat_options[] =
1690 # ifdef HOMEGROWN_POSIX_SIGNALS
1691 " HOMEGROWN_POSIX_SIGNALS"
1696 # ifdef PERL_DISABLE_PMC
1699 # ifdef PERL_DONT_CREATE_GVSV
1700 " PERL_DONT_CREATE_GVSV"
1702 # ifdef PERL_EXTERNAL_GLOB
1703 " PERL_EXTERNAL_GLOB"
1705 # ifdef PERL_IS_MINIPERL
1708 # ifdef PERL_MALLOC_WRAP
1711 # ifdef PERL_MEM_LOG
1714 # ifdef PERL_MEM_LOG_NOIMPL
1715 " PERL_MEM_LOG_NOIMPL"
1717 # ifdef PERL_PRESERVE_IVUV
1718 " PERL_PRESERVE_IVUV"
1720 # ifdef PERL_USE_DEVEL
1723 # ifdef PERL_USE_SAFE_PUTENV
1724 " PERL_USE_SAFE_PUTENV"
1726 # ifdef UNLINK_ALL_VERSIONS
1727 " UNLINK_ALL_VERSIONS"
1729 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1730 " USE_ATTRIBUTES_FOR_PERLIO"
1732 # ifdef USE_FAST_STDIO
1738 # ifdef USE_LOCALE_CTYPE
1741 # ifdef USE_PERL_ATOF
1744 # ifdef USE_SITECUSTOMIZE
1745 " USE_SITECUSTOMIZE"
1748 PERL_UNUSED_ARG(cv);
1749 PERL_UNUSED_ARG(items);
1751 EXTEND(SP, entries);
1753 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1754 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1755 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1759 PUSHs(Perl_newSVpvn_flags(aTHX_
1760 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1763 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1767 PUSHs(&PL_sv_undef);
1770 for (i = 1; i <= local_patch_count; i++) {
1771 /* This will be an undef, if PL_localpatches[i] is NULL. */
1772 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1778 #define INCPUSH_UNSHIFT 0x01
1779 #define INCPUSH_ADD_OLD_VERS 0x02
1780 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1781 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1782 #define INCPUSH_NOT_BASEDIR 0x10
1783 #define INCPUSH_CAN_RELOCATE 0x20
1784 #define INCPUSH_ADD_SUB_DIRS \
1785 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1788 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1792 int argc = PL_origargc;
1793 char **argv = PL_origargv;
1794 const char *scriptname = NULL;
1795 VOL bool dosearch = FALSE;
1797 bool doextract = FALSE;
1798 const char *cddir = NULL;
1799 #ifdef USE_SITECUSTOMIZE
1800 bool minus_f = FALSE;
1802 SV *linestr_sv = newSV_type(SVt_PVIV);
1803 bool add_read_e_script = FALSE;
1805 PERL_SET_PHASE(PERL_PHASE_START);
1807 SvGROW(linestr_sv, 80);
1808 sv_setpvs(linestr_sv,"");
1814 for (argc--,argv++; argc > 0; argc--,argv++) {
1815 if (argv[0][0] != '-' || !argv[0][1])
1821 #ifndef PERL_STRICT_CR
1845 if ((s = moreswitches(s)))
1850 CHECK_MALLOC_TOO_LATE_FOR('t');
1851 if( !PL_tainting ) {
1852 PL_taint_warn = TRUE;
1858 CHECK_MALLOC_TOO_LATE_FOR('T');
1860 PL_taint_warn = FALSE;
1868 forbid_setid('e', FALSE);
1870 PL_e_script = newSVpvs("");
1871 add_read_e_script = TRUE;
1874 sv_catpv(PL_e_script, s);
1876 sv_catpv(PL_e_script, argv[1]);
1880 Perl_croak(aTHX_ "No code specified for -%c", c);
1881 sv_catpvs(PL_e_script, "\n");
1885 #ifdef USE_SITECUSTOMIZE
1891 case 'I': /* -I handled both here and in moreswitches() */
1892 forbid_setid('I', FALSE);
1893 if (!*++s && (s=argv[1]) != NULL) {
1897 STRLEN len = strlen(s);
1898 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1901 Perl_croak(aTHX_ "No directory specified for -I");
1904 forbid_setid('S', FALSE);
1913 opts_prog = newSVpvs("use Config; Config::_V()");
1917 opts_prog = Perl_newSVpvf(aTHX_
1918 "use Config; Config::config_vars(qw%c%s%c)",
1922 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1923 /* don't look for script or read stdin */
1924 scriptname = BIT_BUCKET;
1936 if (!*++s || isSPACE(*s)) {
1940 /* catch use of gnu style long options */
1941 if (strEQ(s, "version")) {
1945 if (strEQ(s, "help")) {
1952 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1963 #ifndef SECURE_INTERNAL_GETENV
1966 (s = PerlEnv_getenv("PERL5OPT")))
1970 if (*s == '-' && *(s+1) == 'T') {
1971 CHECK_MALLOC_TOO_LATE_FOR('T');
1973 PL_taint_warn = FALSE;
1976 char *popt_copy = NULL;
1989 if (!strchr("CDIMUdmtwW", *s))
1990 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1994 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1995 s = popt_copy + (s - d);
2003 if( !PL_tainting ) {
2004 PL_taint_warn = TRUE;
2015 #if defined(USE_SITECUSTOMIZE)
2017 /* The games with local $! are to avoid setting errno if there is no
2018 sitecustomize script. */
2019 # ifdef PERL_IS_MINIPERL
2020 AV *const inc = GvAV(PL_incgv);
2021 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2024 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2026 "BEGIN { do {local $!; -f '%"SVf"/buildcustomize.pl'} && do '%"SVf"/buildcustomize.pl' }", *inc0, *inc0));
2029 /* SITELIB_EXP is a function call on Win32. */
2030 const char *const sitelib = SITELIB_EXP;
2031 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2033 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
2039 scriptname = argv[0];
2042 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2044 else if (scriptname == NULL) {
2046 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2052 /* Set $^X early so that it can be used for relocatable paths in @INC */
2053 assert (!PL_tainted);
2055 S_set_caret_X(aTHX);
2060 bool suidscript = FALSE;
2062 open_script(scriptname, dosearch, &suidscript, &rsfp);
2064 validate_suid(validarg, scriptname, fdscript, suidscript,
2068 # if defined(SIGCHLD) || defined(SIGCLD)
2071 # define SIGCHLD SIGCLD
2073 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2074 if (sigstate == (Sighandler_t) SIG_IGN) {
2075 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2076 "Can't ignore signal CHLD, forcing to default");
2077 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2085 /* This will croak if suidscript is true, as -x cannot be used with
2087 forbid_setid('x', suidscript);
2088 /* Hence you can't get here if suidscript is true */
2090 find_beginning(linestr_sv, rsfp);
2091 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2092 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2096 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2097 CvUNIQUE_on(PL_compcv);
2099 CvPADLIST(PL_compcv) = pad_new(0);
2101 PL_isarev = newHV();
2104 boot_core_UNIVERSAL();
2106 newXS("Internals::V", S_Internals_V, __FILE__);
2109 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2111 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2117 # ifdef HAS_SOCKS5_INIT
2118 socks5_init(argv[0]);
2124 init_predump_symbols();
2125 /* init_postdump_symbols not currently designed to be called */
2126 /* more than once (ENV isn't cleared first, for example) */
2127 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2129 init_postdump_symbols(argc,argv,env);
2131 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2132 * or explicitly in some platforms.
2133 * locale.c:Perl_init_i18nl10n() if the environment
2134 * look like the user wants to use UTF-8. */
2135 #if defined(__SYMBIAN32__)
2136 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2138 # ifndef PERL_IS_MINIPERL
2140 /* Requires init_predump_symbols(). */
2141 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2146 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2147 * and the default open disciplines. */
2148 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2149 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2151 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2152 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2153 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2155 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2156 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2157 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2159 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2160 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2161 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2163 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2164 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2167 sv_setpvs(sv, ":utf8\0:utf8");
2169 sv_setpvs(sv, ":utf8\0");
2172 sv_setpvs(sv, "\0:utf8");
2181 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2182 if (strEQ(s, "unsafe"))
2183 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2184 else if (strEQ(s, "safe"))
2185 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2187 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2194 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2198 PL_xmlfp = PerlIO_stdout();
2200 PL_xmlfp = PerlIO_open(s, "w");
2202 Perl_croak(aTHX_ "Can't open %s", s);
2204 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2210 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2211 PL_madskills = atoi(s);
2212 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2217 lex_start(linestr_sv, rsfp, 0);
2218 PL_subname = newSVpvs("main");
2220 if (add_read_e_script)
2221 filter_add(read_e_script, NULL);
2223 /* now parse the script */
2225 SETERRNO(0,SS_NORMAL);
2226 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2228 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2230 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2234 CopLINE_set(PL_curcop, 0);
2235 PL_curstash = PL_defstash;
2237 SvREFCNT_dec(PL_e_script);
2245 SAVECOPFILE(PL_curcop);
2246 SAVECOPLINE(PL_curcop);
2247 gv_check(PL_defstash);
2256 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2257 dump_mstats("after compilation:");
2262 PL_restartjmpenv = NULL;
2268 =for apidoc perl_run
2270 Tells a Perl interpreter to run. See L<perlembed>.
2283 PERL_ARGS_ASSERT_PERL_RUN;
2284 #ifndef MULTIPLICITY
2285 PERL_UNUSED_ARG(my_perl);
2288 oldscope = PL_scopestack_ix;
2296 cxstack_ix = -1; /* start context stack again */
2298 case 0: /* normal completion */
2302 case 2: /* my_exit() */
2303 while (PL_scopestack_ix > oldscope)
2306 PL_curstash = PL_defstash;
2307 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2308 PL_endav && !PL_minus_c) {
2309 PERL_SET_PHASE(PERL_PHASE_END);
2310 call_list(oldscope, PL_endav);
2313 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2314 dump_mstats("after execution: ");
2320 POPSTACK_TO(PL_mainstack);
2323 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2334 S_run_body(pTHX_ I32 oldscope)
2337 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2338 PL_sawampersand ? "Enabling" : "Omitting"));
2340 if (!PL_restartop) {
2344 exit(0); /* less likely to core dump than my_exit(0) */
2348 if (DEBUG_x_TEST || DEBUG_B_TEST)
2349 dump_all_perl(!DEBUG_B_TEST);
2351 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2355 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2358 if (PERLDB_SINGLE && PL_DBsingle)
2359 sv_setiv(PL_DBsingle, 1);
2361 PERL_SET_PHASE(PERL_PHASE_INIT);
2362 call_list(oldscope, PL_initav);
2364 #ifdef PERL_DEBUG_READONLY_OPS
2365 Perl_pending_Slabs_to_ro(aTHX);
2371 PERL_SET_PHASE(PERL_PHASE_RUN);
2374 PL_restartjmpenv = NULL;
2375 PL_op = PL_restartop;
2379 else if (PL_main_start) {
2380 CvDEPTH(PL_main_cv) = 1;
2381 PL_op = PL_main_start;
2389 =head1 SV Manipulation Functions
2391 =for apidoc p||get_sv
2393 Returns the SV of the specified Perl scalar. C<flags> are passed to
2394 C<gv_fetchpv>. If C<GV_ADD> is set and the
2395 Perl variable does not exist then it will be created. If C<flags> is zero
2396 and the variable does not exist then NULL is returned.
2402 Perl_get_sv(pTHX_ const char *name, I32 flags)
2406 PERL_ARGS_ASSERT_GET_SV;
2408 gv = gv_fetchpv(name, flags, SVt_PV);
2415 =head1 Array Manipulation Functions
2417 =for apidoc p||get_av
2419 Returns the AV of the specified Perl global or package array with the given
2420 name (so it won't work on lexical variables). C<flags> are passed
2421 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2422 Perl variable does not exist then it will be created. If C<flags> is zero
2423 and the variable does not exist then NULL is returned.
2425 Perl equivalent: C<@{"$name"}>.
2431 Perl_get_av(pTHX_ const char *name, I32 flags)
2433 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2435 PERL_ARGS_ASSERT_GET_AV;
2445 =head1 Hash Manipulation Functions
2447 =for apidoc p||get_hv
2449 Returns the HV of the specified Perl hash. C<flags> are passed to
2450 C<gv_fetchpv>. If C<GV_ADD> is set and the
2451 Perl variable does not exist then it will be created. If C<flags> is zero
2452 and the variable does not exist then NULL is returned.
2458 Perl_get_hv(pTHX_ const char *name, I32 flags)
2460 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2462 PERL_ARGS_ASSERT_GET_HV;
2472 =head1 CV Manipulation Functions
2474 =for apidoc p||get_cvn_flags
2476 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2477 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2478 exist then it will be declared (which has the same effect as saying
2479 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2480 then NULL is returned.
2482 =for apidoc p||get_cv
2484 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2490 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2492 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2493 /* XXX this is probably not what they think they're getting.
2494 * It has the same effect as "sub name;", i.e. just a forward
2497 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2499 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2500 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
2501 return newSUB(start_subparse(FALSE, 0),
2502 newSVOP(OP_CONST, 0, sv),
2510 /* Nothing in core calls this now, but we can't replace it with a macro and
2511 move it to mathoms.c as a macro would evaluate name twice. */
2513 Perl_get_cv(pTHX_ const char *name, I32 flags)
2515 PERL_ARGS_ASSERT_GET_CV;
2517 return get_cvn_flags(name, strlen(name), flags);
2520 /* Be sure to refetch the stack pointer after calling these routines. */
2524 =head1 Callback Functions
2526 =for apidoc p||call_argv
2528 Performs a callback to the specified named and package-scoped Perl subroutine
2529 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2531 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2537 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2539 /* See G_* flags in cop.h */
2540 /* null terminated arg list */
2545 PERL_ARGS_ASSERT_CALL_ARGV;
2550 mXPUSHs(newSVpv(*argv,0));
2555 return call_pv(sub_name, flags);
2559 =for apidoc p||call_pv
2561 Performs a callback to the specified Perl sub. See L<perlcall>.
2567 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2568 /* name of the subroutine */
2569 /* See G_* flags in cop.h */
2571 PERL_ARGS_ASSERT_CALL_PV;
2573 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2577 =for apidoc p||call_method
2579 Performs a callback to the specified Perl method. The blessed object must
2580 be on the stack. See L<perlcall>.
2586 Perl_call_method(pTHX_ const char *methname, I32 flags)
2587 /* name of the subroutine */
2588 /* See G_* flags in cop.h */
2591 PERL_ARGS_ASSERT_CALL_METHOD;
2593 len = strlen(methname);
2595 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2596 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2599 /* May be called with any of a CV, a GV, or an SV containing the name. */
2601 =for apidoc p||call_sv
2603 Performs a callback to the Perl sub whose name is in the SV. See
2610 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2611 /* See G_* flags in cop.h */
2614 LOGOP myop; /* fake syntax tree node */
2619 bool oldcatch = CATCH_GET;
2621 OP* const oldop = PL_op;
2624 PERL_ARGS_ASSERT_CALL_SV;
2626 if (flags & G_DISCARD) {
2630 if (!(flags & G_WANT)) {
2631 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2636 Zero(&myop, 1, LOGOP);
2637 myop.op_next = NULL;
2638 if (!(flags & G_NOARGS))
2639 myop.op_flags |= OPf_STACKED;
2640 myop.op_flags |= OP_GIMME_REVERSE(flags);
2644 EXTEND(PL_stack_sp, 1);
2645 *++PL_stack_sp = sv;
2647 oldscope = PL_scopestack_ix;
2649 if (PERLDB_SUB && PL_curstash != PL_debstash
2650 /* Handle first BEGIN of -d. */
2651 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2652 /* Try harder, since this may have been a sighandler, thus
2653 * curstash may be meaningless. */
2654 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2655 && !(flags & G_NODEBUG))
2656 PL_op->op_private |= OPpENTERSUB_DB;
2658 if (flags & G_METHOD) {
2659 Zero(&method_op, 1, UNOP);
2660 method_op.op_next = PL_op;
2661 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2662 method_op.op_type = OP_METHOD;
2663 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2664 myop.op_type = OP_ENTERSUB;
2665 PL_op = (OP*)&method_op;
2668 if (!(flags & G_EVAL)) {
2670 CALL_BODY_SUB((OP*)&myop);
2671 retval = PL_stack_sp - (PL_stack_base + oldmark);
2672 CATCH_SET(oldcatch);
2675 myop.op_other = (OP*)&myop;
2677 create_eval_scope(flags|G_FAKINGEVAL);
2685 CALL_BODY_SUB((OP*)&myop);
2686 retval = PL_stack_sp - (PL_stack_base + oldmark);
2687 if (!(flags & G_KEEPERR)) {
2695 /* my_exit() was called */
2696 PL_curstash = PL_defstash;
2703 PL_restartjmpenv = NULL;
2704 PL_op = PL_restartop;
2708 PL_stack_sp = PL_stack_base + oldmark;
2709 if ((flags & G_WANT) == G_ARRAY)
2713 *++PL_stack_sp = &PL_sv_undef;
2718 if (PL_scopestack_ix > oldscope)
2719 delete_eval_scope();
2723 if (flags & G_DISCARD) {
2724 PL_stack_sp = PL_stack_base + oldmark;
2733 /* Eval a string. The G_EVAL flag is always assumed. */
2736 =for apidoc p||eval_sv
2738 Tells Perl to C<eval> the string in the SV. It supports the same flags
2739 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2745 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2747 /* See G_* flags in cop.h */
2751 UNOP myop; /* fake syntax tree node */
2752 VOL I32 oldmark = SP - PL_stack_base;
2755 OP* const oldop = PL_op;
2758 PERL_ARGS_ASSERT_EVAL_SV;
2760 if (flags & G_DISCARD) {
2767 Zero(PL_op, 1, UNOP);
2768 EXTEND(PL_stack_sp, 1);
2769 *++PL_stack_sp = sv;
2771 if (!(flags & G_NOARGS))
2772 myop.op_flags = OPf_STACKED;
2773 myop.op_next = NULL;
2774 myop.op_type = OP_ENTEREVAL;
2775 myop.op_flags |= OP_GIMME_REVERSE(flags);
2776 if (flags & G_KEEPERR)
2777 myop.op_flags |= OPf_SPECIAL;
2779 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2780 * before a PUSHEVAL, which corrupts the stack after a croak */
2781 TAINT_PROPER("eval_sv()");
2787 if (PL_op == (OP*)(&myop)) {
2788 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2790 goto fail; /* failed in compilation */
2793 retval = PL_stack_sp - (PL_stack_base + oldmark);
2794 if (!(flags & G_KEEPERR)) {
2802 /* my_exit() was called */
2803 PL_curstash = PL_defstash;
2810 PL_restartjmpenv = NULL;
2811 PL_op = PL_restartop;
2816 PL_stack_sp = PL_stack_base + oldmark;
2817 if ((flags & G_WANT) == G_ARRAY)
2821 *++PL_stack_sp = &PL_sv_undef;
2827 if (flags & G_DISCARD) {
2828 PL_stack_sp = PL_stack_base + oldmark;
2838 =for apidoc p||eval_pv
2840 Tells Perl to C<eval> the given string and return an SV* result.
2846 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2850 SV* sv = newSVpv(p, 0);
2852 PERL_ARGS_ASSERT_EVAL_PV;
2854 eval_sv(sv, G_SCALAR);
2861 if (croak_on_error && SvTRUE(ERRSV)) {
2862 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2868 /* Require a module. */
2871 =head1 Embedding Functions
2873 =for apidoc p||require_pv
2875 Tells Perl to C<require> the file named by the string argument. It is
2876 analogous to the Perl code C<eval "require '$file'">. It's even
2877 implemented that way; consider using load_module instead.
2882 Perl_require_pv(pTHX_ const char *pv)
2888 PERL_ARGS_ASSERT_REQUIRE_PV;
2890 PUSHSTACKi(PERLSI_REQUIRE);
2892 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2893 eval_sv(sv_2mortal(sv), G_DISCARD);
2899 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2901 /* This message really ought to be max 23 lines.
2902 * Removed -h because the user already knows that option. Others? */
2904 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2905 minimum of 509 character string literals. */
2906 static const char * const usage_msg[] = {
2907 " -0[octal] specify record separator (\\0, if no argument)\n"
2908 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2909 " -C[number/list] enables the listed Unicode features\n"
2910 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2911 " -d[:debugger] run program under debugger\n"
2912 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2913 " -e program one line of program (several -e's allowed, omit programfile)\n"
2914 " -E program like -e, but enables all optional features\n"
2915 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2916 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2917 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2918 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2919 " -l[octal] enable line ending processing, specifies line terminator\n"
2920 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2921 " -n assume \"while (<>) { ... }\" loop around program\n"
2922 " -p assume loop like -n but print line also, like sed\n"
2923 " -s enable rudimentary parsing for switches after programfile\n"
2924 " -S look for programfile using PATH environment variable\n",
2925 " -t enable tainting warnings\n"
2926 " -T enable tainting checks\n"
2927 " -u dump core after parsing program\n"
2928 " -U allow unsafe operations\n"
2929 " -v print version, patchlevel and license\n"
2930 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2931 " -w enable many useful warnings\n"
2932 " -W enable all warnings\n"
2933 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2934 " -X disable all warnings\n"
2936 "Run 'perldoc perl' for more help with Perl.\n\n",
2939 const char * const *p = usage_msg;
2940 PerlIO *out = PerlIO_stdout();
2942 PERL_ARGS_ASSERT_USAGE;
2945 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2948 PerlIO_puts(out, *p++);
2951 /* convert a string of -D options (or digits) into an int.
2952 * sets *s to point to the char after the options */
2956 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2958 static const char * const usage_msgd[] = {
2959 " Debugging flag values: (see also -d)\n"
2960 " p Tokenizing and parsing (with v, displays parse stack)\n"
2961 " s Stack snapshots (with v, displays all stacks)\n"
2962 " l Context (loop) stack processing\n"
2963 " t Trace execution\n"
2964 " o Method and overloading resolution\n",
2965 " c String/numeric conversions\n"
2966 " P Print profiling info, source file input state\n"
2967 " m Memory and SV allocation\n"
2968 " f Format processing\n"
2969 " r Regular expression parsing and execution\n"
2970 " x Syntax tree dump\n",
2971 " u Tainting checks\n"
2972 " H Hash dump -- usurps values()\n"
2973 " X Scratchpad allocation\n"
2976 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2977 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2978 " v Verbose: use in conjunction with other flags\n"
2979 " C Copy On Write\n"
2980 " A Consistency checks on internal structures\n"
2981 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2982 " M trace smart match resolution\n"
2983 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
2988 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2991 /* if adding extra options, remember to update DEBUG_MASK */
2992 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
2994 for (; isALNUM(**s); (*s)++) {
2995 const char * const d = strchr(debopts,**s);
2997 i |= 1 << (d - debopts);
2998 else if (ckWARN_d(WARN_DEBUGGING))
2999 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3000 "invalid option -D%c, use -D'' to see choices\n", **s);
3003 else if (isDIGIT(**s)) {
3005 for (; isALNUM(**s); (*s)++) ;
3007 else if (givehelp) {
3008 const char *const *p = usage_msgd;
3009 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3012 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3013 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3014 "-Dp not implemented on this platform\n");
3020 /* This routine handles any switches that can be given during run */
3023 Perl_moreswitches(pTHX_ const char *s)
3027 const char option = *s; /* used to remember option in -m/-M code */
3029 PERL_ARGS_ASSERT_MORESWITCHES;
3037 SvREFCNT_dec(PL_rs);
3038 if (s[1] == 'x' && s[2]) {
3039 const char *e = s+=2;
3045 flags = PERL_SCAN_SILENT_ILLDIGIT;
3046 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3047 if (s + numlen < e) {
3048 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3052 PL_rs = newSVpvs("");
3053 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3054 tmps = (U8*)SvPVX(PL_rs);
3055 uvchr_to_utf8(tmps, rschar);
3056 SvCUR_set(PL_rs, UNISKIP(rschar));
3061 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3062 if (rschar & ~((U8)~0))
3063 PL_rs = &PL_sv_undef;
3064 else if (!rschar && numlen >= 2)
3065 PL_rs = newSVpvs("");
3067 char ch = (char)rschar;
3068 PL_rs = newSVpvn(&ch, 1);
3071 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3076 PL_unicode = parse_unicode_opts( (const char **)&s );
3077 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3083 while (*s && !isSPACE(*s)) ++s;
3084 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3095 forbid_setid('d', FALSE);
3098 /* -dt indicates to the debugger that threads will be used */
3099 if (*s == 't' && !isALNUM(s[1])) {
3101 my_setenv("PERL5DB_THREADED", "1");
3104 /* The following permits -d:Mod to accepts arguments following an =
3105 in the fashion that -MSome::Mod does. */
3106 if (*s == ':' || *s == '=') {
3113 sv = newSVpvs("no Devel::");
3115 sv = newSVpvs("use Devel::");
3119 end = s + strlen(s);
3121 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3122 while(isALNUM(*s) || *s==':') ++s;
3124 sv_catpvn(sv, start, end - start);
3126 sv_catpvn(sv, start, s-start);
3127 /* Don't use NUL as q// delimiter here, this string goes in the
3129 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3132 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3136 PL_perldb = PERLDB_ALL;
3143 forbid_setid('D', FALSE);
3145 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3146 #else /* !DEBUGGING */
3147 if (ckWARN_d(WARN_DEBUGGING))
3148 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3149 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3150 for (s++; isALNUM(*s); s++) ;
3155 usage(PL_origargv[0]);
3158 Safefree(PL_inplace);
3159 #if defined(__CYGWIN__) /* do backup extension automagically */
3160 if (*(s+1) == '\0') {
3161 PL_inplace = savepvs(".bak");
3164 #endif /* __CYGWIN__ */
3166 const char * const start = ++s;
3167 while (*s && !isSPACE(*s))
3170 PL_inplace = savepvn(start, s - start);
3174 if (*s == '-') /* Additional switches on #! line. */
3178 case 'I': /* -I handled both here and in parse_body() */
3179 forbid_setid('I', FALSE);
3181 while (*s && isSPACE(*s))
3186 /* ignore trailing spaces (possibly followed by other switches) */
3188 for (e = p; *e && !isSPACE(*e); e++) ;
3192 } while (*p && *p != '-');
3194 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3200 Perl_croak(aTHX_ "No directory specified for -I");
3206 SvREFCNT_dec(PL_ors_sv);
3212 PL_ors_sv = newSVpvs("\n");
3213 numlen = 3 + (*s == '0');
3214 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3218 if (RsPARA(PL_rs)) {
3219 PL_ors_sv = newSVpvs("\n\n");
3222 PL_ors_sv = newSVsv(PL_rs);
3227 forbid_setid('M', FALSE); /* XXX ? */
3230 forbid_setid('m', FALSE); /* XXX ? */
3235 const char *use = "use ";
3237 /* -M-foo == 'no foo' */
3238 /* Leading space on " no " is deliberate, to make both
3239 possibilities the same length. */
3240 if (*s == '-') { use = " no "; ++s; }
3241 sv = newSVpvn(use,4);
3243 /* We allow -M'Module qw(Foo Bar)' */
3244 while(isALNUM(*s) || *s==':') {
3253 Perl_croak(aTHX_ "Module name required with -%c option",
3256 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3257 "contains single ':'",
3258 (int)(s - start), start, option);
3259 end = s + strlen(s);
3261 sv_catpvn(sv, start, end - start);
3262 if (option == 'm') {
3264 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3265 sv_catpvs( sv, " ()");
3268 sv_catpvn(sv, start, s-start);
3269 /* Use NUL as q''-delimiter. */
3270 sv_catpvs(sv, " split(/,/,q\0");
3272 sv_catpvn(sv, s, end - s);
3273 sv_catpvs(sv, "\0)");
3276 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3279 Perl_croak(aTHX_ "Missing argument to -%c", option);
3290 forbid_setid('s', FALSE);
3291 PL_doswitches = TRUE;
3305 PL_do_undump = TRUE;
3313 if (!sv_derived_from(PL_patchlevel, "version"))
3314 upg_version(PL_patchlevel, TRUE);
3317 SV* level= vstringify(PL_patchlevel);
3318 #ifdef PERL_PATCHNUM
3319 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3320 SV *num = newSVpvs(PERL_PATCHNUM "*");
3322 SV *num = newSVpvs(PERL_PATCHNUM);
3325 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3326 SvREFCNT_dec(level);
3329 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3333 PerlIO_printf(PerlIO_stdout(),
3334 "\nThis is perl " STRINGIFY(PERL_REVISION)
3335 ", version " STRINGIFY(PERL_VERSION)
3336 ", subversion " STRINGIFY(PERL_SUBVERSION)
3337 " (%"SVf") built for " ARCHNAME, level
3339 SvREFCNT_dec(level);
3342 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3343 PerlIO_printf(PerlIO_stdout(),
3344 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3345 SVfARG(vstringify(PL_patchlevel))));
3346 PerlIO_printf(PerlIO_stdout(),
3347 Perl_form(aTHX_ " built under %s at %s %s\n",
3348 OSNAME, __DATE__, __TIME__));
3349 PerlIO_printf(PerlIO_stdout(),
3350 Perl_form(aTHX_ " OS Specific Release: %s\n",
3353 #if defined(LOCAL_PATCH_COUNT)
3354 if (LOCAL_PATCH_COUNT > 0)
3355 PerlIO_printf(PerlIO_stdout(),
3356 "\n(with %d registered patch%s, "
3357 "see perl -V for more detail)",
3359 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3362 PerlIO_printf(PerlIO_stdout(),
3363 "\n\nCopyright 1987-2011, Larry Wall\n");
3365 PerlIO_printf(PerlIO_stdout(),
3366 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3369 PerlIO_printf(PerlIO_stdout(),
3370 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3371 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3374 PerlIO_printf(PerlIO_stdout(),
3375 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3376 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3379 PerlIO_printf(PerlIO_stdout(),
3380 "atariST series port, ++jrb bammi@cadence.com\n");
3383 PerlIO_printf(PerlIO_stdout(),
3384 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3387 PerlIO_printf(PerlIO_stdout(),
3388 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3391 PerlIO_printf(PerlIO_stdout(),
3392 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3395 PerlIO_printf(PerlIO_stdout(),
3396 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3399 PerlIO_printf(PerlIO_stdout(),
3400 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3403 PerlIO_printf(PerlIO_stdout(),
3404 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3407 PerlIO_printf(PerlIO_stdout(),
3408 "EPOC port by Olaf Flebbe, 1999-2002\n");
3411 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3412 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3415 #ifdef __SYMBIAN32__
3416 PerlIO_printf(PerlIO_stdout(),
3417 "Symbian port by Nokia, 2004-2005\n");
3419 #ifdef BINARY_BUILD_NOTICE
3420 BINARY_BUILD_NOTICE;
3422 PerlIO_printf(PerlIO_stdout(),
3424 Perl may be copied only under the terms of either the Artistic License or the\n\
3425 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3426 Complete documentation for Perl, including FAQ lists, should be found on\n\
3427 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3428 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3431 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3432 PL_dowarn |= G_WARN_ON;
3437 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3438 if (!specialWARN(PL_compiling.cop_warnings))
3439 PerlMemShared_free(PL_compiling.cop_warnings);
3440 PL_compiling.cop_warnings = pWARN_ALL ;
3444 PL_dowarn = G_WARN_ALL_OFF;
3445 if (!specialWARN(PL_compiling.cop_warnings))
3446 PerlMemShared_free(PL_compiling.cop_warnings);
3447 PL_compiling.cop_warnings = pWARN_NONE ;
3454 if (s[0] == '-') /* Additional switches on #! line. */
3459 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3465 #ifdef ALTERNATE_SHEBANG
3466 case 'S': /* OS/2 needs -S on "extproc" line. */
3470 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3475 /* compliments of Tom Christiansen */
3477 /* unexec() can be found in the Gnu emacs distribution */
3478 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3481 Perl_my_unexec(pTHX)
3483 PERL_UNUSED_CONTEXT;
3485 SV * prog = newSVpv(BIN_EXP, 0);
3486 SV * file = newSVpv(PL_origfilename, 0);
3490 sv_catpvs(prog, "/perl");
3491 sv_catpvs(file, ".perldump");
3493 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3494 /* unexec prints msg to stderr in case of failure */
3495 PerlProc_exit(status);
3498 # include <lib$routines.h>
3499 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3500 # elif defined(WIN32) || defined(__CYGWIN__)
3501 Perl_croak(aTHX_ "dump is not supported");
3503 ABORT(); /* for use with undump */
3508 /* initialize curinterp */
3514 # define PERLVAR(prefix,var,type)
3515 # define PERLVARA(prefix,var,n,type)
3516 # if defined(PERL_IMPLICIT_CONTEXT)
3517 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3518 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3520 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3521 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3523 # include "intrpvar.h"
3529 # define PERLVAR(prefix,var,type)
3530 # define PERLVARA(prefix,var,n,type)
3531 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3532 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3533 # include "intrpvar.h"
3540 /* As these are inside a structure, PERLVARI isn't capable of initialising
3542 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3543 PL_reg_poscache = PL_reg_starttry = NULL;
3547 S_init_main_stash(pTHX)
3552 PL_curstash = PL_defstash = newHV();
3553 /* We know that the string "main" will be in the global shared string
3554 table, so it's a small saving to use it rather than allocate another
3556 PL_curstname = newSVpvs_share("main");
3557 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3558 /* If we hadn't caused another reference to "main" to be in the shared
3559 string table above, then it would be worth reordering these two,
3560 because otherwise all we do is delete "main" from it as a consequence
3561 of the SvREFCNT_dec, only to add it again with hv_name_set */
3562 SvREFCNT_dec(GvHV(gv));
3563 hv_name_set(PL_defstash, "main", 4, 0);
3564 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3566 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3568 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3569 GvMULTI_on(PL_incgv);
3570 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3571 GvMULTI_on(PL_hintgv);
3572 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3573 SvREFCNT_inc_simple_void(PL_defgv);
3574 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3575 SvREFCNT_inc_simple_void(PL_errgv);
3576 GvMULTI_on(PL_errgv);
3577 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3578 GvMULTI_on(PL_replgv);
3579 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3580 #ifdef PERL_DONT_CREATE_GVSV
3583 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3585 PL_curstash = PL_defstash;
3586 CopSTASH_set(&PL_compiling, PL_defstash);
3587 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3588 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3590 /* We must init $/ before switches are processed. */
3591 sv_setpvs(get_sv("/", GV_ADD), "\n");
3595 S_open_script(pTHX_ const char *scriptname, bool dosearch,
3596 bool *suidscript, PerlIO **rsfpp)
3601 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3604 PL_origfilename = savepvs("-e");
3607 /* if find_script() returns, it returns a malloc()-ed value */
3608 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3610 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3611 const char *s = scriptname + 8;
3617 * Tell apart "normal" usage of fdscript, e.g.
3618 * with bash on FreeBSD:
3619 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3620 * from usage in suidperl.
3621 * Does any "normal" usage leave garbage after the number???
3622 * Is it a mistake to use a similar /dev/fd/ construct for
3627 * Be supersafe and do some sanity-checks.
3628 * Still, can we be sure we got the right thing?
3631 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3634 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3636 scriptname = savepv(s + 1);
3637 Safefree(PL_origfilename);
3638 PL_origfilename = (char *)scriptname;
3643 CopFILE_free(PL_curcop);
3644 CopFILE_set(PL_curcop, PL_origfilename);
3645 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3646 scriptname = (char *)"";
3647 if (fdscript >= 0) {
3648 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3649 # if defined(HAS_FCNTL) && defined(F_SETFD)
3651 /* ensure close-on-exec */
3652 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3655 else if (!*scriptname) {
3656 forbid_setid(0, *suidscript);
3657 *rsfpp = PerlIO_stdin();
3660 #ifdef FAKE_BIT_BUCKET
3661 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3662 * is called) and still have the "-e" work. (Believe it or not,
3663 * a /dev/null is required for the "-e" to work because source
3664 * filter magic is used to implement it. ) This is *not* a general
3665 * replacement for a /dev/null. What we do here is create a temp
3666 * file (an empty file), open up that as the script, and then
3667 * immediately close and unlink it. Close enough for jazz. */
3668 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3669 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3670 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3671 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3672 FAKE_BIT_BUCKET_TEMPLATE
3674 const char * const err = "Failed to create a fake bit bucket";
3675 if (strEQ(scriptname, BIT_BUCKET)) {
3676 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3677 int tmpfd = mkstemp(tmpname);
3679 scriptname = tmpname;
3682 Perl_croak(aTHX_ err);
3685 scriptname = mktemp(tmpname);
3687 Perl_croak(aTHX_ err);
3692 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3693 #ifdef FAKE_BIT_BUCKET
3694 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3695 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3696 && strlen(scriptname) == sizeof(tmpname) - 1) {
3699 scriptname = BIT_BUCKET;
3701 # if defined(HAS_FCNTL) && defined(F_SETFD)
3703 /* ensure close-on-exec */
3704 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3708 /* PSz 16 Sep 03 Keep neat error message */
3710 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3712 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3713 CopFILE(PL_curcop), Strerror(errno));
3719 * I_SYSSTATVFS HAS_FSTATVFS
3721 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3722 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3723 * here so that metaconfig picks them up. */
3726 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3727 /* Don't even need this function. */
3730 S_validate_suid(pTHX_ PerlIO *rsfp)
3732 PERL_ARGS_ASSERT_VALIDATE_SUID;
3734 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3737 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3738 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3740 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3743 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3744 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3745 /* not set-id, must be wrapped */
3748 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3751 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3755 register const char *s2;
3757 PERL_ARGS_ASSERT_FIND_BEGINNING;
3759 /* skip forward in input to the real script? */
3762 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3763 Perl_croak(aTHX_ "No Perl script found in input\n");
3765 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3766 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3767 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3769 while (*s == ' ' || *s == '\t') s++;
3771 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3772 || s2[-1] == '_') s2--;
3773 if (strnEQ(s2-4,"perl",4))
3774 while ((s = moreswitches(s)))
3784 PL_uid = PerlProc_getuid();
3785 PL_euid = PerlProc_geteuid();
3786 PL_gid = PerlProc_getgid();
3787 PL_egid = PerlProc_getegid();
3789 PL_uid |= PL_gid << 16;
3790 PL_euid |= PL_egid << 16;
3792 /* Should not happen: */
3793 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3794 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3797 * Should go by suidscript, not uid!=euid: why disallow
3798 * system("ls") in scripts run from setuid things?
3799 * Or, is this run before we check arguments and set suidscript?
3800 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3801 * (We never have suidscript, can we be sure to have fdscript?)
3802 * Or must then go by UID checks? See comments in forbid_setid also.
3806 /* This is used very early in the lifetime of the program,
3807 * before even the options are parsed, so PL_tainting has
3808 * not been initialized properly. */
3810 Perl_doing_taint(int argc, char *argv[], char *envp[])
3812 #ifndef PERL_IMPLICIT_SYS
3813 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3814 * before we have an interpreter-- and the whole point of this
3815 * function is to be called at such an early stage. If you are on
3816 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3817 * "tainted because running with altered effective ids', you'll
3818 * have to add your own checks somewhere in here. The two most
3819 * known samples of 'implicitness' are Win32 and NetWare, neither
3820 * of which has much of concept of 'uids'. */
3821 int uid = PerlProc_getuid();
3822 int euid = PerlProc_geteuid();
3823 int gid = PerlProc_getgid();
3824 int egid = PerlProc_getegid();
3831 if (uid && (euid != uid || egid != gid))
3833 #endif /* !PERL_IMPLICIT_SYS */
3834 /* This is a really primitive check; environment gets ignored only
3835 * if -T are the first chars together; otherwise one gets
3836 * "Too late" message. */
3837 if ( argc > 1 && argv[1][0] == '-'
3838 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3843 /* Passing the flag as a single char rather than a string is a slight space
3844 optimisation. The only message that isn't /^-.$/ is
3845 "program input from stdin", which is substituted in place of '\0', which
3846 could never be a command line flag. */
3848 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3851 char string[3] = "-x";
3852 const char *message = "program input from stdin";
3859 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3860 if (PL_euid != PL_uid)
3861 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3862 if (PL_egid != PL_gid)
3863 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3864 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3866 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3870 Perl_init_dbargs(pTHX)
3872 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3877 /* Someone has already created it.
3878 It might have entries, and if we just turn off AvREAL(), they will
3879 "leak" until global destruction. */
3882 AvREIFY_only(PL_dbargs);
3886 Perl_init_debugger(pTHX)
3889 HV * const ostash = PL_curstash;
3891 PL_curstash = PL_debstash;
3893 Perl_init_dbargs(aTHX);
3894 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3895 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3896 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3897 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3898 if (!SvIOK(PL_DBsingle))
3899 sv_setiv(PL_DBsingle, 0);
3900 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3901 if (!SvIOK(PL_DBtrace))
3902 sv_setiv(PL_DBtrace, 0);
3903 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3904 if (!SvIOK(PL_DBsignal))
3905 sv_setiv(PL_DBsignal, 0);
3906 PL_curstash = ostash;
3909 #ifndef STRESS_REALLOC
3910 #define REASONABLE(size) (size)
3912 #define REASONABLE(size) (1) /* unreasonable */
3916 Perl_init_stacks(pTHX)
3919 /* start with 128-item stack and 8K cxstack */
3920 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3921 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3922 PL_curstackinfo->si_type = PERLSI_MAIN;
3923 PL_curstack = PL_curstackinfo->si_stack;
3924 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3926 PL_stack_base = AvARRAY(PL_curstack);
3927 PL_stack_sp = PL_stack_base;
3928 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3930 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3933 PL_tmps_max = REASONABLE(128);
3935 Newx(PL_markstack,REASONABLE(32),I32);
3936 PL_markstack_ptr = PL_markstack;
3937 PL_markstack_max = PL_markstack + REASONABLE(32);
3941 Newx(PL_scopestack,REASONABLE(32),I32);
3943 Newx(PL_scopestack_name,REASONABLE(32),const char*);
3945 PL_scopestack_ix = 0;
3946 PL_scopestack_max = REASONABLE(32);
3948 Newx(PL_savestack,REASONABLE(128),ANY);
3949 PL_savestack_ix = 0;
3950 PL_savestack_max = REASONABLE(128);
3959 while (PL_curstackinfo->si_next)
3960 PL_curstackinfo = PL_curstackinfo->si_next;
3961 while (PL_curstackinfo) {
3962 PERL_SI *p = PL_curstackinfo->si_prev;
3963 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3964 Safefree(PL_curstackinfo->si_cxstack);
3965 Safefree(PL_curstackinfo);
3966 PL_curstackinfo = p;
3968 Safefree(PL_tmps_stack);
3969 Safefree(PL_markstack);
3970 Safefree(PL_scopestack);
3972 Safefree(PL_scopestack_name);
3974 Safefree(PL_savestack);
3978 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
3980 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
3981 AV *const isa = GvAVn(gv);
3984 PERL_ARGS_ASSERT_POPULATE_ISA;
3986 if(AvFILLp(isa) != -1)
3989 /* NOTE: No support for tied ISA */
3991 va_start(args, len);
3993 const char *const parent = va_arg(args, const char*);
3998 parent_len = va_arg(args, size_t);
4000 /* Arguments are supplied with a trailing :: */
4001 assert(parent_len > 2);
4002 assert(parent[parent_len - 1] == ':');
4003 assert(parent[parent_len - 2] == ':');
4004 av_push(isa, newSVpvn(parent, parent_len - 2));
4005 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4012 S_init_predump_symbols(pTHX)
4018 sv_setpvs(get_sv("\"", GV_ADD), " ");
4019 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4022 /* Historically, PVIOs were blessed into IO::Handle, unless
4023 FileHandle was loaded, in which case they were blessed into
4024 that. Action at a distance.
4025 However, if we simply bless into IO::Handle, we break code
4026 that assumes that PVIOs will have (among others) a seek
4027 method. IO::File inherits from IO::Handle and IO::Seekable,
4028 and provides the needed methods. But if we simply bless into
4029 it, then we break code that assumed that by loading
4030 IO::Handle, *it* would work.
4031 So a compromise is to set up the correct @IO::File::ISA,
4032 so that code that does C<use IO::Handle>; will still work.
4035 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4036 STR_WITH_LEN("IO::Handle::"),
4037 STR_WITH_LEN("IO::Seekable::"),
4038 STR_WITH_LEN("Exporter::"),
4041 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4042 GvMULTI_on(PL_stdingv);
4043 io = GvIOp(PL_stdingv);
4044 IoTYPE(io) = IoTYPE_RDONLY;
4045 IoIFP(io) = PerlIO_stdin();
4046 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4048 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4050 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4053 IoTYPE(io) = IoTYPE_WRONLY;
4054 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4056 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4058 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4060 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4061 GvMULTI_on(PL_stderrgv);
4062 io = GvIOp(PL_stderrgv);
4063 IoTYPE(io) = IoTYPE_WRONLY;
4064 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4065 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4067 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4069 PL_statname = newSV(0); /* last filename we did stat on */
4073 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4077 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4079 argc--,argv++; /* skip name of script */
4080 if (PL_doswitches) {
4081 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4085 if (argv[0][1] == '-' && !argv[0][2]) {
4089 if ((s = strchr(argv[0], '='))) {
4090 const char *const start_name = argv[0] + 1;
4091 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4092 TRUE, SVt_PV)), s + 1);
4095 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4098 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4099 GvMULTI_on(PL_argvgv);
4100 (void)gv_AVadd(PL_argvgv);
4101 av_clear(GvAVn(PL_argvgv));
4102 for (; argc > 0; argc--,argv++) {
4103 SV * const sv = newSVpv(argv[0],0);
4104 av_push(GvAVn(PL_argvgv),sv);
4105 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4106 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4109 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4110 (void)sv_utf8_decode(sv);
4116 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4121 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4123 PL_toptarget = newSV_type(SVt_PVFM);
4124 sv_setpvs(PL_toptarget, "");
4125 PL_bodytarget = newSV_type(SVt_PVFM);
4126 sv_setpvs(PL_bodytarget, "");
4127 PL_formtarget = PL_bodytarget;
4131 init_argv_symbols(argc,argv);
4133 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4134 sv_setpv(GvSV(tmpgv),PL_origfilename);
4136 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4138 bool env_is_not_environ;
4139 GvMULTI_on(PL_envgv);
4140 hv = GvHVn(PL_envgv);
4141 hv_magic(hv, NULL, PERL_MAGIC_env);
4143 #ifdef USE_ENVIRON_ARRAY
4144 /* Note that if the supplied env parameter is actually a copy
4145 of the global environ then it may now point to free'd memory
4146 if the environment has been modified since. To avoid this
4147 problem we treat env==NULL as meaning 'use the default'
4151 env_is_not_environ = env != environ;
4152 if (env_is_not_environ
4153 # ifdef USE_ITHREADS
4154 && PL_curinterp == aTHX
4163 for (; *env; env++) {
4166 if (!(s = strchr(old_var,'=')) || s == old_var)
4169 #if defined(MSDOS) && !defined(DJGPP)
4171 (void)strupr(old_var);
4174 sv = newSVpv(s+1, 0);
4175 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4176 if (env_is_not_environ)
4180 #endif /* USE_ENVIRON_ARRAY */
4181 #endif /* !PERL_MICRO */
4184 #ifdef THREADS_HAVE_PIDS
4185 PL_ppid = (IV)getppid();
4188 /* touch @F array to prevent spurious warnings 20020415 MJD */
4190 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4195 S_init_perllib(pTHX)
4199 const char *perl5lib = NULL;
4202 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4208 perl5lib = PerlEnv_getenv("PERL5LIB");
4210 * It isn't possible to delete an environment variable with
4211 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4212 * case we treat PERL5LIB as undefined if it has a zero-length value.
4214 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4215 if (perl5lib && *perl5lib != '\0')
4219 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4221 s = PerlEnv_getenv("PERLLIB");
4223 incpush_use_sep(s, 0, 0);
4226 /* Treat PERL5?LIB as a possible search list logical name -- the
4227 * "natural" VMS idiom for a Unix path string. We allow each
4228 * element to be a set of |-separated directories for compatibility.
4232 if (my_trnlnm("PERL5LIB",buf,0))
4234 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4235 } while (my_trnlnm("PERL5LIB",buf,++idx));
4237 while (my_trnlnm("PERLLIB",buf,idx++))
4238 incpush_use_sep(buf, 0, 0);
4243 #ifndef PERL_IS_MINIPERL
4244 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4245 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4247 /* Use the ~-expanded versions of APPLLIB (undocumented),
4248 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4251 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4252 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4256 /* sitearch is always relative to sitelib on Windows for
4257 * DLL-based path intuition to work correctly */
4258 # if !defined(WIN32)
4259 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4260 INCPUSH_CAN_RELOCATE);
4266 /* this picks up sitearch as well */
4267 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4269 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4271 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4275 #ifdef PERL_VENDORARCH_EXP
4276 /* vendorarch is always relative to vendorlib on Windows for
4277 * DLL-based path intuition to work correctly */
4278 # if !defined(WIN32)
4279 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4280 INCPUSH_CAN_RELOCATE);
4284 #ifdef PERL_VENDORLIB_EXP
4286 /* this picks up vendorarch as well */
4287 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4289 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4291 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4292 INCPUSH_CAN_RELOCATE);
4297 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4301 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4305 s = win32_get_privlib(PERL_FS_VERSION, &len);
4307 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4310 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4312 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4316 #ifdef PERL_OTHERLIBDIRS
4317 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4318 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4319 |INCPUSH_CAN_RELOCATE);
4325 * It isn't possible to delete an environment variable with
4326 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4327 * case we treat PERL5LIB as undefined if it has a zero-length value.
4329 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4330 if (perl5lib && *perl5lib != '\0')
4334 incpush_use_sep(perl5lib, 0,
4335 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4337 /* Treat PERL5?LIB as a possible search list logical name -- the
4338 * "natural" VMS idiom for a Unix path string. We allow each
4339 * element to be a set of |-separated directories for compatibility.
4343 if (my_trnlnm("PERL5LIB",buf,0))
4345 incpush_use_sep(buf, 0,
4346 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4347 } while (my_trnlnm("PERL5LIB",buf,++idx));
4351 /* Use the ~-expanded versions of APPLLIB (undocumented),
4352 SITELIB and VENDORLIB for older versions
4355 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4356 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4359 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4360 /* Search for version-specific dirs below here */
4361 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4362 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4366 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4367 /* Search for version-specific dirs below here */
4368 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4369 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4372 #ifdef PERL_OTHERLIBDIRS
4373 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4374 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4375 |INCPUSH_CAN_RELOCATE);
4377 #endif /* !PERL_IS_MINIPERL */
4380 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4383 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4384 # define PERLLIB_SEP ';'
4387 # define PERLLIB_SEP '|'
4389 # define PERLLIB_SEP ':'
4392 #ifndef PERLLIB_MANGLE
4393 # define PERLLIB_MANGLE(s,n) (s)
4396 #ifndef PERL_IS_MINIPERL
4397 /* Push a directory onto @INC if it exists.
4398 Generate a new SV if we do this, to save needing to copy the SV we push
4401 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4406 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4408 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4409 S_ISDIR(tmpstatbuf.st_mode)) {
4411 dir = newSVsv(stem);
4413 /* Truncate dir back to stem. */
4414 SvCUR_set(dir, SvCUR(stem));
4421 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4424 #ifndef PERL_IS_MINIPERL
4425 const U8 using_sub_dirs
4426 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4427 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4428 const U8 add_versioned_sub_dirs
4429 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4430 const U8 add_archonly_sub_dirs
4431 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4432 #ifdef PERL_INC_VERSION_LIST
4433 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4436 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4437 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4438 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4439 AV *const inc = GvAVn(PL_incgv);
4441 PERL_ARGS_ASSERT_INCPUSH;
4444 /* Could remove this vestigial extra block, if we don't mind a lot of
4445 re-indenting diff noise. */
4448 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4449 arranged to unshift #! line -I onto the front of @INC. However,
4450 -I can add version and architecture specific libraries, and they
4451 need to go first. The old code assumed that it was always
4452 pushing. Hence to make it work, need to push the architecture
4453 (etc) libraries onto a temporary array, then "unshift" that onto
4454 the front of @INC. */
4455 #ifndef PERL_IS_MINIPERL
4456 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4460 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4461 defined to so something (in os2/os2.c), but the code has been
4462 this way, ignoring any possible changed of length, since
4463 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4465 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4467 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4474 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4476 while (unix[len-1] == '/') len--; /* Cosmetic */
4477 sv_usepvn(libdir,unix,len);
4480 PerlIO_printf(Perl_error_log,
4481 "Failed to unixify @INC element \"%s\"\n",
4485 /* Do the if() outside the #ifdef to avoid warnings about an unused
4488 #ifdef PERL_RELOCATABLE_INC
4490 * Relocatable include entries are marked with a leading .../
4493 * 0: Remove that leading ".../"
4494 * 1: Remove trailing executable name (anything after the last '/')
4495 * from the perl path to give a perl prefix
4497 * While the @INC element starts "../" and the prefix ends with a real
4498 * directory (ie not . or ..) chop that real directory off the prefix
4499 * and the leading "../" from the @INC element. ie a logical "../"
4501 * Finally concatenate the prefix and the remainder of the @INC element
4502 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4503 * generates /usr/local/lib/perl5
4505 const char *libpath = SvPVX(libdir);
4506 STRLEN libpath_len = SvCUR(libdir);
4507 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4509 SV * const caret_X = get_sv("\030", 0);
4510 /* Going to use the SV just as a scratch buffer holding a C
4516 /* $^X is *the* source of taint if tainting is on, hence
4517 SvPOK() won't be true. */
4519 assert(SvPOKp(caret_X));
4520 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4522 /* Firstly take off the leading .../
4523 If all else fail we'll do the paths relative to the current
4525 sv_chop(libdir, libpath + 4);
4526 /* Don't use SvPV as we're intentionally bypassing taining,
4527 mortal copies that the mg_get of tainting creates, and
4528 corruption that seems to come via the save stack.
4529 I guess that the save stack isn't correctly set up yet. */
4530 libpath = SvPVX(libdir);
4531 libpath_len = SvCUR(libdir);
4533 /* This would work more efficiently with memrchr, but as it's
4534 only a GNU extension we'd need to probe for it and
4535 implement our own. Not hard, but maybe not worth it? */
4537 prefix = SvPVX(prefix_sv);
4538 lastslash = strrchr(prefix, '/');
4540 /* First time in with the *lastslash = '\0' we just wipe off
4541 the trailing /perl from (say) /usr/foo/bin/perl
4545 while ((*lastslash = '\0'), /* Do that, come what may. */
4546 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4547 && (lastslash = strrchr(prefix, '/')))) {
4548 if (lastslash[1] == '\0'
4549 || (lastslash[1] == '.'
4550 && (lastslash[2] == '/' /* ends "/." */
4551 || (lastslash[2] == '/'
4552 && lastslash[3] == '/' /* or "/.." */
4554 /* Prefix ends "/" or "/." or "/..", any of which
4555 are fishy, so don't do any more logical cleanup.
4559 /* Remove leading "../" from path */
4562 /* Next iteration round the loop removes the last
4563 directory name from prefix by writing a '\0' in
4564 the while clause. */
4566 /* prefix has been terminated with a '\0' to the correct
4567 length. libpath points somewhere into the libdir SV.
4568 We need to join the 2 with '/' and drop the result into
4570 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4571 SvREFCNT_dec(libdir);
4572 /* And this is the new libdir. */
4575 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4576 /* Need to taint relocated paths if running set ID */
4577 SvTAINTED_on(libdir);
4580 SvREFCNT_dec(prefix_sv);
4584 #ifndef PERL_IS_MINIPERL
4586 * BEFORE pushing libdir onto @INC we may first push version- and
4587 * archname-specific sub-directories.
4589 if (using_sub_dirs) {
4591 #ifdef PERL_INC_VERSION_LIST
4592 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4593 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4594 const char * const *incver;
4596 subdir = newSVsv(libdir);
4598 if (add_versioned_sub_dirs) {
4599 /* .../version/archname if -d .../version/archname */
4600 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4601 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4603 /* .../version if -d .../version */
4604 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4605 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4608 #ifdef PERL_INC_VERSION_LIST
4610 for (incver = incverlist; *incver; incver++) {
4611 /* .../xxx if -d .../xxx */
4612 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4613 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4618 if (add_archonly_sub_dirs) {
4619 /* .../archname if -d .../archname */
4620 sv_catpvs(subdir, "/" ARCHNAME);
4621 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4625 assert (SvREFCNT(subdir) == 1);
4626 SvREFCNT_dec(subdir);
4628 #endif /* !PERL_IS_MINIPERL */
4629 /* finally add this lib directory at the end of @INC */
4631 #ifdef PERL_IS_MINIPERL
4632 const U32 extra = 0;
4634 U32 extra = av_len(av) + 1;
4636 av_unshift(inc, extra + push_basedir);
4638 av_store(inc, extra, libdir);
4639 #ifndef PERL_IS_MINIPERL
4641 /* av owns a reference, av_store() expects to be donated a
4642 reference, and av expects to be sane when it's cleared.
4643 If I wanted to be naughty and wrong, I could peek inside the
4644 implementation of av_clear(), realise that it uses
4645 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4646 and so directly steal from it (with a memcpy() to inc, and
4647 then memset() to NULL them out. But people copy code from the
4648 core expecting it to be best practise, so let's use the API.
4649 Although studious readers will note that I'm not checking any
4651 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4656 else if (push_basedir) {
4657 av_push(inc, libdir);
4660 if (!push_basedir) {
4661 assert (SvREFCNT(libdir) == 1);
4662 SvREFCNT_dec(libdir);
4668 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4672 /* This logic has been broken out from S_incpush(). It may be possible to
4675 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4677 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4678 * argument to incpush_use_sep. This allows creation of relocatable
4679 * Perl distributions that patch the binary at install time. Those
4680 * distributions will have to provide their own relocation tools; this
4681 * is not a feature otherwise supported by core Perl.
4683 #ifndef PERL_RELOCATABLE_INCPUSH
4690 /* Break at all separators */
4691 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4693 /* skip any consecutive separators */
4695 /* Uncomment the next line for PATH semantics */
4696 /* But you'll need to write tests */
4697 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4699 incpush(p, (STRLEN)(s - p), flags);
4704 incpush(p, (STRLEN)(end - p), flags);
4709 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4713 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4719 PERL_ARGS_ASSERT_CALL_LIST;
4721 while (av_len(paramList) >= 0) {
4722 cv = MUTABLE_CV(av_shift(paramList));
4724 if (paramList == PL_beginav) {
4725 /* save PL_beginav for compiler */
4726 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4728 else if (paramList == PL_checkav) {
4729 /* save PL_checkav for compiler */
4730 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4732 else if (paramList == PL_unitcheckav) {
4733 /* save PL_unitcheckav for compiler */
4734 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4745 PL_madskills |= 16384;
4750 PL_madskills &= ~16384;
4753 (void)SvPV_const(atsv, len);
4755 PL_curcop = &PL_compiling;
4756 CopLINE_set(PL_curcop, oldline);
4757 if (paramList == PL_beginav)
4758 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4760 Perl_sv_catpvf(aTHX_ atsv,
4761 "%s failed--call queue aborted",
4762 paramList == PL_checkav ? "CHECK"
4763 : paramList == PL_initav ? "INIT"
4764 : paramList == PL_unitcheckav ? "UNITCHECK"
4766 while (PL_scopestack_ix > oldscope)
4769 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4776 /* my_exit() was called */
4777 while (PL_scopestack_ix > oldscope)
4780 PL_curstash = PL_defstash;
4781 PL_curcop = &PL_compiling;
4782 CopLINE_set(PL_curcop, oldline);
4788 PL_curcop = &PL_compiling;
4789 CopLINE_set(PL_curcop, oldline);
4792 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4801 Perl_my_exit(pTHX_ U32 status)
4812 STATUS_EXIT_SET(status);
4819 Perl_my_failure_exit(pTHX)
4823 /* We have been called to fall on our sword. The desired exit code
4824 * should be already set in STATUS_UNIX, but could be shifted over
4825 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4828 * If an error code has not been set, then force the issue.
4830 if (MY_POSIX_EXIT) {
4832 /* According to the die_exit.t tests, if errno is non-zero */
4833 /* It should be used for the error status. */
4835 if (errno == EVMSERR) {
4836 STATUS_NATIVE = vaxc$errno;
4839 /* According to die_exit.t tests, if the child_exit code is */
4840 /* also zero, then we need to exit with a code of 255 */
4841 if ((errno != 0) && (errno < 256))
4842 STATUS_UNIX_EXIT_SET(errno);
4843 else if (STATUS_UNIX < 255) {
4844 STATUS_UNIX_EXIT_SET(255);
4849 /* The exit code could have been set by $? or vmsish which
4850 * means that it may not have fatal set. So convert
4851 * success/warning codes to fatal with out changing
4852 * the POSIX status code. The severity makes VMS native
4853 * status handling work, while UNIX mode programs use the
4854 * the POSIX exit codes.
4856 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4857 STATUS_NATIVE &= STS$M_COND_ID;
4858 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4862 /* Traditionally Perl on VMS always expects a Fatal Error. */
4863 if (vaxc$errno & 1) {
4865 /* So force success status to failure */
4866 if (STATUS_NATIVE & 1)
4871 STATUS_UNIX = EINTR; /* In case something cares */
4876 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4878 /* Encode the severity code */
4879 severity = STATUS_NATIVE & STS$M_SEVERITY;
4880 STATUS_UNIX = (severity ? severity : 1) << 8;
4882 /* Perl expects this to be a fatal error */
4883 if (severity != STS$K_SEVERE)
4892 STATUS_UNIX_SET(errno);
4894 exitstatus = STATUS_UNIX >> 8;
4895 if (exitstatus & 255)
4896 STATUS_UNIX_SET(exitstatus);
4898 STATUS_UNIX_SET(255);
4905 S_my_exit_jump(pTHX)
4910 SvREFCNT_dec(PL_e_script);
4914 POPSTACK_TO(PL_mainstack);
4922 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4925 const char * const p = SvPVX_const(PL_e_script);
4926 const char *nl = strchr(p, '\n');
4928 PERL_UNUSED_ARG(idx);
4929 PERL_UNUSED_ARG(maxlen);
4931 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4933 filter_del(read_e_script);
4936 sv_catpvn(buf_sv, p, nl-p);
4937 sv_chop(PL_e_script, nl);
4943 * c-indentation-style: bsd
4945 * indent-tabs-mode: t
4948 * ex: set ts=8 sts=4 sw=4 noet: