4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 by Larry Wall
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
28 #define PERL_IN_PERL_C
30 #include "patchlevel.h" /* for local_patches */
37 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
42 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
44 # include <sys/wait.h>
52 char control[CMSG_SPACE(sizeof(int))];
69 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
70 char *getenv (char *); /* Usually in <stdlib.h> */
73 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
75 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
76 /* Drop everything. Heck, don't even try to call it */
77 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
79 /* Drop almost everything */
80 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
83 #define CALL_BODY_EVAL(myop) \
84 if (PL_op == (myop)) \
85 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); \
89 #define CALL_BODY_SUB(myop) \
90 if (PL_op == (myop)) \
91 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
95 #define CALL_LIST_BODY(cv) \
96 PUSHMARK(PL_stack_sp); \
97 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
100 S_init_tls_and_interp(PerlInterpreter *my_perl)
104 PERL_SET_INTERP(my_perl);
105 #if defined(USE_ITHREADS)
108 PERL_SET_THX(my_perl);
111 MUTEX_INIT(&PL_dollarzero_mutex);
112 MUTEX_INIT(&PL_my_ctx_mutex);
115 #if defined(USE_ITHREADS)
118 /* This always happens for non-ithreads */
121 PERL_SET_THX(my_perl);
126 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
129 Perl_sys_init(int* argc, char*** argv)
133 PERL_ARGS_ASSERT_SYS_INIT;
135 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
136 PERL_UNUSED_ARG(argv);
137 PERL_SYS_INIT_BODY(argc, argv);
141 Perl_sys_init3(int* argc, char*** argv, char*** env)
145 PERL_ARGS_ASSERT_SYS_INIT3;
147 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
148 PERL_UNUSED_ARG(argv);
149 PERL_UNUSED_ARG(env);
150 PERL_SYS_INIT3_BODY(argc, argv, env);
157 if (!PL_veto_cleanup) {
158 PERL_SYS_TERM_BODY();
163 #ifdef PERL_IMPLICIT_SYS
165 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
166 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
167 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
168 struct IPerlDir* ipD, struct IPerlSock* ipS,
169 struct IPerlProc* ipP)
171 PerlInterpreter *my_perl;
173 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
175 /* Newx() needs interpreter, so call malloc() instead */
176 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
177 S_init_tls_and_interp(my_perl);
178 Zero(my_perl, 1, PerlInterpreter);
188 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
195 =head1 Embedding Functions
197 =for apidoc perl_alloc
199 Allocates a new Perl interpreter. See L<perlembed>.
207 PerlInterpreter *my_perl;
209 /* Newx() needs interpreter, so call malloc() instead */
210 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
212 S_init_tls_and_interp(my_perl);
213 #ifndef PERL_TRACK_MEMPOOL
214 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
216 Zero(my_perl, 1, PerlInterpreter);
217 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
221 #endif /* PERL_IMPLICIT_SYS */
224 =for apidoc perl_construct
226 Initializes a new Perl interpreter. See L<perlembed>.
232 perl_construct(pTHXx)
236 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
240 PL_perl_destruct_level = 1;
242 PERL_UNUSED_ARG(my_perl);
243 if (PL_perl_destruct_level > 0)
246 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
248 /* set read-only and try to insure than we wont see REFCNT==0
251 SvREADONLY_on(&PL_sv_undef);
252 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
254 sv_setpv(&PL_sv_no,PL_No);
255 /* value lookup in void context - happens to have the side effect
256 of caching the numeric forms. However, as &PL_sv_no doesn't contain
257 a string that is a valid numer, we have to turn the public flags by
263 SvREADONLY_on(&PL_sv_no);
264 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
266 sv_setpv(&PL_sv_yes,PL_Yes);
269 SvREADONLY_on(&PL_sv_yes);
270 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
272 SvREADONLY_on(&PL_sv_placeholder);
273 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
275 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
276 #ifdef PERL_USES_PL_PIDSTATUS
277 PL_pidstatus = newHV();
280 PL_rs = newSVpvs("\n");
290 SET_NUMERIC_STANDARD();
292 #if defined(LOCAL_PATCH_COUNT)
293 PL_localpatches = local_patches; /* For possible -v */
296 #ifdef HAVE_INTERP_INTERN
300 PerlIO_init(aTHX); /* Hook to IO system */
302 PL_fdpid = newAV(); /* for remembering popen pids by fd */
303 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
304 PL_errors = newSVpvs("");
305 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
306 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
307 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
309 /* First entry is a list of empty elements. It needs to be initialised
310 else all hell breaks loose in S_find_uninit_var(). */
311 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
312 PL_regex_pad = AvARRAY(PL_regex_padav);
314 #ifdef USE_REENTRANT_API
315 Perl_reentrant_init(aTHX);
318 /* Note that strtab is a rather special HV. Assumptions are made
319 about not iterating on it, and not adding tie magic to it.
320 It is properly deallocated in perl_destruct() */
323 HvSHAREKEYS_off(PL_strtab); /* mandatory */
324 hv_ksplit(PL_strtab, 512);
326 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
327 _dyld_lookup_and_bind
328 ("__environ", (unsigned long *) &environ_pointer, NULL);
332 # ifdef USE_ENVIRON_ARRAY
333 PL_origenviron = environ;
337 /* Use sysconf(_SC_CLK_TCK) if available, if not
338 * available or if the sysconf() fails, use the HZ.
339 * BeOS has those, but returns the wrong value.
340 * The HZ if not originally defined has been by now
341 * been defined as CLK_TCK, if available. */
342 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
343 PL_clocktick = sysconf(_SC_CLK_TCK);
344 if (PL_clocktick <= 0)
348 PL_stashcache = newHV();
350 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
351 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
354 if (!PL_mmap_page_size) {
355 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
357 SETERRNO(0, SS_NORMAL);
359 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
361 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
363 if ((long) PL_mmap_page_size < 0) {
365 SV * const error = ERRSV;
366 SvUPGRADE(error, SVt_PV);
367 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
370 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
374 # ifdef HAS_GETPAGESIZE
375 PL_mmap_page_size = getpagesize();
377 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
378 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
382 if (PL_mmap_page_size <= 0)
383 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
384 (IV) PL_mmap_page_size);
386 #endif /* HAS_MMAP */
388 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
389 PL_timesbase.tms_utime = 0;
390 PL_timesbase.tms_stime = 0;
391 PL_timesbase.tms_cutime = 0;
392 PL_timesbase.tms_cstime = 0;
395 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
397 PL_registered_mros = newHV();
398 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
399 HvMAX(PL_registered_mros) = 0;
405 =for apidoc nothreadhook
407 Stub that provides thread hook for perl_destruct when there are
414 Perl_nothreadhook(pTHX)
420 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
422 Perl_dump_sv_child(pTHX_ SV *sv)
425 const int sock = PL_dumper_fd;
426 const int debug_fd = PerlIO_fileno(Perl_debug_log);
427 union control_un control;
430 struct cmsghdr *cmptr;
432 unsigned char buffer[256];
434 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
436 if(sock == -1 || debug_fd == -1)
439 PerlIO_flush(Perl_debug_log);
441 /* All these shenanigans are to pass a file descriptor over to our child for
442 it to dump out to. We can't let it hold open the file descriptor when it
443 forks, as the file descriptor it will dump to can turn out to be one end
444 of pipe that some other process will wait on for EOF. (So as it would
445 be open, the wait would be forever.) */
447 msg.msg_control = control.control;
448 msg.msg_controllen = sizeof(control.control);
449 /* We're a connected socket so we don't need a destination */
455 cmptr = CMSG_FIRSTHDR(&msg);
456 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
457 cmptr->cmsg_level = SOL_SOCKET;
458 cmptr->cmsg_type = SCM_RIGHTS;
459 *((int *)CMSG_DATA(cmptr)) = 1;
461 vec[0].iov_base = (void*)&sv;
462 vec[0].iov_len = sizeof(sv);
463 got = sendmsg(sock, &msg, 0);
466 perror("Debug leaking scalars parent sendmsg failed");
469 if(got < sizeof(sv)) {
470 perror("Debug leaking scalars parent short sendmsg");
474 /* Return protocol is
476 unsigned char: length of location string (0 for empty)
477 unsigned char*: string (not terminated)
479 vec[0].iov_base = (void*)&returned_errno;
480 vec[0].iov_len = sizeof(returned_errno);
481 vec[1].iov_base = buffer;
484 got = readv(sock, vec, 2);
487 perror("Debug leaking scalars parent read failed");
488 PerlIO_flush(PerlIO_stderr());
491 if(got < sizeof(returned_errno) + 1) {
492 perror("Debug leaking scalars parent short read");
493 PerlIO_flush(PerlIO_stderr());
498 got = read(sock, buffer + 1, *buffer);
500 perror("Debug leaking scalars parent read 2 failed");
501 PerlIO_flush(PerlIO_stderr());
506 perror("Debug leaking scalars parent short read 2");
507 PerlIO_flush(PerlIO_stderr());
512 if (returned_errno || *buffer) {
513 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
514 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
515 returned_errno, strerror(returned_errno));
521 =for apidoc perl_destruct
523 Shuts down a Perl interpreter. See L<perlembed>.
532 VOL signed char destruct_level; /* see possible values in intrpvar.h */
534 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
538 PERL_ARGS_ASSERT_PERL_DESTRUCT;
540 PERL_UNUSED_ARG(my_perl);
543 assert(PL_scopestack_ix == 1);
545 /* wait for all pseudo-forked children to finish */
546 PERL_WAIT_FOR_CHILDREN;
548 destruct_level = PL_perl_destruct_level;
551 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
553 const int i = atoi(s);
554 if (destruct_level < i)
560 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
566 if (PL_endav && !PL_minus_c)
567 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 SvREFCNT_dec(PL_main_cv);
758 /* Tell PerlIO we are about to tear things apart in case
759 we have layers which are using resources that should
763 PerlIO_destruct(aTHX);
765 if (PL_sv_objcount) {
767 * Try to destruct global references. We do this first so that the
768 * destructors and destructees still exist. Some sv's might remain.
769 * Non-referenced objects are on their own.
773 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
774 PL_defoutgv = NULL; /* may have been freed */
777 /* unhook hooks which will soon be, or use, destroyed data */
778 SvREFCNT_dec(PL_warnhook);
780 SvREFCNT_dec(PL_diehook);
783 /* call exit list functions */
784 while (PL_exitlistlen-- > 0)
785 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
787 Safefree(PL_exitlist);
792 SvREFCNT_dec(PL_registered_mros);
794 /* jettison our possibly duplicated environment */
795 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
796 * so we certainly shouldn't free it here
799 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
800 if (environ != PL_origenviron && !PL_use_safe_putenv
802 /* only main thread can free environ[0] contents */
803 && PL_curinterp == aTHX
809 for (i = 0; environ[i]; i++)
810 safesysfree(environ[i]);
812 /* Must use safesysfree() when working with environ. */
813 safesysfree(environ);
815 environ = PL_origenviron;
818 #endif /* !PERL_MICRO */
820 if (destruct_level == 0) {
822 DEBUG_P(debprofdump());
824 #if defined(PERLIO_LAYERS)
825 /* No more IO - including error messages ! */
826 PerlIO_cleanup(aTHX);
829 CopFILE_free(&PL_compiling);
830 CopSTASH_free(&PL_compiling);
832 /* The exit() function will do everything that needs doing. */
836 /* reset so print() ends up where we expect */
840 /* the syntax tree is shared between clones
841 * so op_free(PL_main_root) only ReREFCNT_dec's
842 * REGEXPs in the parent interpreter
843 * we need to manually ReREFCNT_dec for the clones
845 SvREFCNT_dec(PL_regex_padav);
846 PL_regex_padav = NULL;
850 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
851 PL_stashcache = NULL;
853 /* loosen bonds of global variables */
855 /* XXX can PL_parser still be non-null here? */
856 if(PL_parser && PL_parser->rsfp) {
857 (void)PerlIO_close(PL_parser->rsfp);
858 PL_parser->rsfp = NULL;
862 Safefree(PL_splitstr);
872 PL_doswitches = FALSE;
873 PL_dowarn = G_WARN_OFF;
874 PL_doextract = FALSE;
875 PL_sawampersand = FALSE; /* must save all match strings */
878 Safefree(PL_inplace);
880 SvREFCNT_dec(PL_patchlevel);
881 SvREFCNT_dec(PL_apiversion);
884 SvREFCNT_dec(PL_e_script);
890 /* magical thingies */
892 SvREFCNT_dec(PL_ofsgv); /* *, */
895 SvREFCNT_dec(PL_ors_sv); /* $\ */
898 SvREFCNT_dec(PL_rs); /* $/ */
901 Safefree(PL_osname); /* $^O */
904 SvREFCNT_dec(PL_statname);
908 /* defgv, aka *_ should be taken care of elsewhere */
910 /* clean up after study() */
911 SvREFCNT_dec(PL_lastscream);
912 PL_lastscream = NULL;
913 Safefree(PL_screamfirst);
915 Safefree(PL_screamnext);
919 Safefree(PL_efloatbuf);
923 /* startup and shutdown function lists */
924 SvREFCNT_dec(PL_beginav);
925 SvREFCNT_dec(PL_beginav_save);
926 SvREFCNT_dec(PL_endav);
927 SvREFCNT_dec(PL_checkav);
928 SvREFCNT_dec(PL_checkav_save);
929 SvREFCNT_dec(PL_unitcheckav);
930 SvREFCNT_dec(PL_unitcheckav_save);
931 SvREFCNT_dec(PL_initav);
933 PL_beginav_save = NULL;
936 PL_checkav_save = NULL;
937 PL_unitcheckav = NULL;
938 PL_unitcheckav_save = NULL;
941 /* shortcuts just get cleared */
950 PL_last_in_gv = NULL;
962 SvREFCNT_dec(PL_argvout_stack);
963 PL_argvout_stack = NULL;
965 SvREFCNT_dec(PL_modglobal);
967 SvREFCNT_dec(PL_preambleav);
968 PL_preambleav = NULL;
969 SvREFCNT_dec(PL_subname);
971 #ifdef PERL_USES_PL_PIDSTATUS
972 SvREFCNT_dec(PL_pidstatus);
975 SvREFCNT_dec(PL_toptarget);
977 SvREFCNT_dec(PL_bodytarget);
978 PL_bodytarget = NULL;
979 PL_formtarget = NULL;
981 /* free locale stuff */
982 #ifdef USE_LOCALE_COLLATE
983 Safefree(PL_collation_name);
984 PL_collation_name = NULL;
987 #ifdef USE_LOCALE_NUMERIC
988 Safefree(PL_numeric_name);
989 PL_numeric_name = NULL;
990 SvREFCNT_dec(PL_numeric_radix_sv);
991 PL_numeric_radix_sv = NULL;
994 /* clear utf8 character classes */
995 SvREFCNT_dec(PL_utf8_alnum);
996 SvREFCNT_dec(PL_utf8_ascii);
997 SvREFCNT_dec(PL_utf8_alpha);
998 SvREFCNT_dec(PL_utf8_space);
999 SvREFCNT_dec(PL_utf8_cntrl);
1000 SvREFCNT_dec(PL_utf8_graph);
1001 SvREFCNT_dec(PL_utf8_digit);
1002 SvREFCNT_dec(PL_utf8_upper);
1003 SvREFCNT_dec(PL_utf8_lower);
1004 SvREFCNT_dec(PL_utf8_print);
1005 SvREFCNT_dec(PL_utf8_punct);
1006 SvREFCNT_dec(PL_utf8_xdigit);
1007 SvREFCNT_dec(PL_utf8_mark);
1008 SvREFCNT_dec(PL_utf8_toupper);
1009 SvREFCNT_dec(PL_utf8_totitle);
1010 SvREFCNT_dec(PL_utf8_tolower);
1011 SvREFCNT_dec(PL_utf8_tofold);
1012 SvREFCNT_dec(PL_utf8_idstart);
1013 SvREFCNT_dec(PL_utf8_idcont);
1014 PL_utf8_alnum = NULL;
1015 PL_utf8_ascii = NULL;
1016 PL_utf8_alpha = NULL;
1017 PL_utf8_space = NULL;
1018 PL_utf8_cntrl = NULL;
1019 PL_utf8_graph = NULL;
1020 PL_utf8_digit = NULL;
1021 PL_utf8_upper = NULL;
1022 PL_utf8_lower = NULL;
1023 PL_utf8_print = NULL;
1024 PL_utf8_punct = NULL;
1025 PL_utf8_xdigit = NULL;
1026 PL_utf8_mark = NULL;
1027 PL_utf8_toupper = NULL;
1028 PL_utf8_totitle = NULL;
1029 PL_utf8_tolower = NULL;
1030 PL_utf8_tofold = NULL;
1031 PL_utf8_idstart = NULL;
1032 PL_utf8_idcont = NULL;
1034 if (!specialWARN(PL_compiling.cop_warnings))
1035 PerlMemShared_free(PL_compiling.cop_warnings);
1036 PL_compiling.cop_warnings = NULL;
1037 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1038 PL_compiling.cop_hints_hash = NULL;
1039 CopFILE_free(&PL_compiling);
1040 CopSTASH_free(&PL_compiling);
1042 /* Prepare to destruct main symbol table. */
1047 SvREFCNT_dec(PL_curstname);
1048 PL_curstname = NULL;
1050 /* clear queued errors */
1051 SvREFCNT_dec(PL_errors);
1054 SvREFCNT_dec(PL_isarev);
1057 if (destruct_level >= 2) {
1058 if (PL_scopestack_ix != 0)
1059 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1060 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1061 (long)PL_scopestack_ix);
1062 if (PL_savestack_ix != 0)
1063 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1064 "Unbalanced saves: %ld more saves than restores\n",
1065 (long)PL_savestack_ix);
1066 if (PL_tmps_floor != -1)
1067 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1068 (long)PL_tmps_floor + 1);
1069 if (cxstack_ix != -1)
1070 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1071 (long)cxstack_ix + 1);
1074 #ifdef PERL_IMPLICIT_CONTEXT
1075 /* the entries in this list are allocated via SV PVX's, so get freed
1076 * in sv_clean_all */
1077 Safefree(PL_my_cxt_list);
1080 /* Now absolutely destruct everything, somehow or other, loops or no. */
1082 /* the 2 is for PL_fdpid and PL_strtab */
1083 while (sv_clean_all() > 2)
1086 AvREAL_off(PL_fdpid); /* no surviving entries */
1087 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1090 #ifdef HAVE_INTERP_INTERN
1094 /* Destruct the global string table. */
1096 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1097 * so that sv_free() won't fail on them.
1098 * Now that the global string table is using a single hunk of memory
1099 * for both HE and HEK, we either need to explicitly unshare it the
1100 * correct way, or actually free things here.
1103 const I32 max = HvMAX(PL_strtab);
1104 HE * const * const array = HvARRAY(PL_strtab);
1105 HE *hent = array[0];
1108 if (hent && ckWARN_d(WARN_INTERNAL)) {
1109 HE * const next = HeNEXT(hent);
1110 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1111 "Unbalanced string table refcount: (%ld) for \"%s\"",
1112 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1119 hent = array[riter];
1124 HvARRAY(PL_strtab) = 0;
1125 HvTOTALKEYS(PL_strtab) = 0;
1127 SvREFCNT_dec(PL_strtab);
1130 /* free the pointer tables used for cloning */
1131 ptr_table_free(PL_ptr_table);
1132 PL_ptr_table = (PTR_TBL_t*)NULL;
1135 /* free special SVs */
1137 SvREFCNT(&PL_sv_yes) = 0;
1138 sv_clear(&PL_sv_yes);
1139 SvANY(&PL_sv_yes) = NULL;
1140 SvFLAGS(&PL_sv_yes) = 0;
1142 SvREFCNT(&PL_sv_no) = 0;
1143 sv_clear(&PL_sv_no);
1144 SvANY(&PL_sv_no) = NULL;
1145 SvFLAGS(&PL_sv_no) = 0;
1149 for (i=0; i<=2; i++) {
1150 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1151 sv_clear(PERL_DEBUG_PAD(i));
1152 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1153 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1157 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1158 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1160 #ifdef DEBUG_LEAKING_SCALARS
1161 if (PL_sv_count != 0) {
1166 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1167 svend = &sva[SvREFCNT(sva)];
1168 for (sv = sva + 1; sv < svend; ++sv) {
1169 if (SvTYPE(sv) != SVTYPEMASK) {
1170 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1172 " refcnt=%"UVuf pTHX__FORMAT "\n"
1173 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1175 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1177 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1179 sv->sv_debug_inpad ? "for" : "by",
1180 sv->sv_debug_optype ?
1181 PL_op_name[sv->sv_debug_optype]: "(none)",
1182 PTR2UV(sv->sv_debug_parent),
1185 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1186 Perl_dump_sv_child(aTHX_ sv);
1192 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1196 /* Wait for up to 4 seconds for child to terminate.
1197 This seems to be the least effort way of timing out on reaping
1199 struct timeval waitfor = {4, 0};
1200 int sock = PL_dumper_fd;
1204 FD_SET(sock, &rset);
1205 select(sock + 1, &rset, NULL, NULL, &waitfor);
1206 waitpid(child, &status, WNOHANG);
1211 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1217 #ifdef PERL_DEBUG_READONLY_OPS
1223 #if defined(PERLIO_LAYERS)
1224 /* No more IO - including error messages ! */
1225 PerlIO_cleanup(aTHX);
1228 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1229 as currently layers use it rather than NULL as a marker
1230 for no arg - and will try and SvREFCNT_dec it.
1232 SvREFCNT(&PL_sv_undef) = 0;
1233 SvREADONLY_off(&PL_sv_undef);
1235 Safefree(PL_origfilename);
1236 PL_origfilename = NULL;
1237 Safefree(PL_reg_start_tmp);
1238 PL_reg_start_tmp = (char**)NULL;
1239 PL_reg_start_tmpl = 0;
1240 Safefree(PL_reg_curpm);
1241 Safefree(PL_reg_poscache);
1242 free_tied_hv_pool();
1243 Safefree(PL_op_mask);
1244 Safefree(PL_psig_name);
1245 PL_psig_name = (SV**)NULL;
1246 PL_psig_ptr = (SV**)NULL;
1247 Safefree(PL_psig_pend);
1248 PL_psig_pend = (int*)NULL;
1250 /* We need to NULL PL_psig_pend first, so that
1251 signal handlers know not to use it */
1252 int *psig_save = PL_psig_pend;
1253 PL_psig_pend = (int*)NULL;
1254 Safefree(psig_save);
1258 PL_tainting = FALSE;
1259 PL_taint_warn = FALSE;
1260 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1263 DEBUG_P(debprofdump());
1265 #ifdef USE_REENTRANT_API
1266 Perl_reentrant_free(aTHX);
1271 while (PL_regmatch_slab) {
1272 regmatch_slab *s = PL_regmatch_slab;
1273 PL_regmatch_slab = PL_regmatch_slab->next;
1277 /* As the absolutely last thing, free the non-arena SV for mess() */
1280 /* we know that type == SVt_PVMG */
1282 /* it could have accumulated taint magic */
1285 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1286 moremagic = mg->mg_moremagic;
1287 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1289 Safefree(mg->mg_ptr);
1293 /* we know that type >= SVt_PV */
1294 SvPV_free(PL_mess_sv);
1295 Safefree(SvANY(PL_mess_sv));
1296 Safefree(PL_mess_sv);
1303 =for apidoc perl_free
1305 Releases a Perl interpreter. See L<perlembed>.
1315 PERL_ARGS_ASSERT_PERL_FREE;
1317 if (PL_veto_cleanup)
1320 #ifdef PERL_TRACK_MEMPOOL
1323 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1324 * value as we're probably hunting memory leaks then
1326 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1327 if (!s || atoi(s) == 0) {
1328 const U32 old_debug = PL_debug;
1329 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1330 thread at thread exit. */
1332 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1333 "free this thread's memory\n");
1334 PL_debug &= ~ DEBUG_m_FLAG;
1336 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1337 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1338 PL_debug = old_debug;
1343 #if defined(WIN32) || defined(NETWARE)
1344 # if defined(PERL_IMPLICIT_SYS)
1347 void *host = nw_internal_host;
1349 void *host = w32_internal_host;
1351 PerlMem_free(aTHXx);
1353 nw_delete_internal_host(host);
1355 win32_delete_internal_host(host);
1359 PerlMem_free(aTHXx);
1362 PerlMem_free(aTHXx);
1366 #if defined(USE_ITHREADS)
1367 /* provide destructors to clean up the thread key when libperl is unloaded */
1368 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1370 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1371 #pragma fini "perl_fini"
1372 #elif defined(__sun) && !defined(__GNUC__)
1373 #pragma fini (perl_fini)
1377 #if defined(__GNUC__)
1378 __attribute__((destructor))
1383 if (PL_curinterp && !PL_veto_cleanup)
1388 #endif /* THREADS */
1391 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1394 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1395 PL_exitlist[PL_exitlistlen].fn = fn;
1396 PL_exitlist[PL_exitlistlen].ptr = ptr;
1400 #ifdef HAS_PROCSELFEXE
1401 /* This is a function so that we don't hold on to MAXPATHLEN
1402 bytes of stack longer than necessary
1405 S_procself_val(pTHX_ SV *sv, const char *arg0)
1407 char buf[MAXPATHLEN];
1408 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1410 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1411 includes a spurious NUL which will cause $^X to fail in system
1412 or backticks (this will prevent extensions from being built and
1413 many tests from working). readlink is not meant to add a NUL.
1414 Normal readlink works fine.
1416 if (len > 0 && buf[len-1] == '\0') {
1420 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1421 returning the text "unknown" from the readlink rather than the path
1422 to the executable (or returning an error from the readlink). Any valid
1423 path has a '/' in it somewhere, so use that to validate the result.
1424 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1426 if (len > 0 && memchr(buf, '/', len)) {
1427 sv_setpvn(sv,buf,len);
1433 #endif /* HAS_PROCSELFEXE */
1436 S_set_caret_X(pTHX) {
1438 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1440 #ifdef HAS_PROCSELFEXE
1441 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1444 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
1446 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
1453 =for apidoc perl_parse
1455 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1461 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1468 PERL_ARGS_ASSERT_PERL_PARSE;
1469 #ifndef MULTIPLICITY
1470 PERL_UNUSED_ARG(my_perl);
1473 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1474 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1475 * This MUST be done before any hash stores or fetches take place.
1476 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1477 * yourself, it is your responsibility to provide a good random seed!
1478 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1479 if (!PL_rehash_seed_set)
1480 PL_rehash_seed = get_hash_seed();
1482 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1484 if (s && (atoi(s) == 1))
1485 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1487 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1492 if (PL_origalen != 0) {
1493 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1496 /* Set PL_origalen be the sum of the contiguous argv[]
1497 * elements plus the size of the env in case that it is
1498 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1499 * as the maximum modifiable length of $0. In the worst case
1500 * the area we are able to modify is limited to the size of
1501 * the original argv[0]. (See below for 'contiguous', though.)
1503 const char *s = NULL;
1506 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1507 /* Do the mask check only if the args seem like aligned. */
1509 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1511 /* See if all the arguments are contiguous in memory. Note
1512 * that 'contiguous' is a loose term because some platforms
1513 * align the argv[] and the envp[]. If the arguments look
1514 * like non-aligned, assume that they are 'strictly' or
1515 * 'traditionally' contiguous. If the arguments look like
1516 * aligned, we just check that they are within aligned
1517 * PTRSIZE bytes. As long as no system has something bizarre
1518 * like the argv[] interleaved with some other data, we are
1519 * fine. (Did I just evoke Murphy's Law?) --jhi */
1520 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1522 for (i = 1; i < PL_origargc; i++) {
1523 if ((PL_origargv[i] == s + 1
1525 || PL_origargv[i] == s + 2
1530 (PL_origargv[i] > s &&
1532 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1543 #ifndef PERL_USE_SAFE_PUTENV
1544 /* Can we grab env area too to be used as the area for $0? */
1545 if (s && PL_origenviron && !PL_use_safe_putenv) {
1546 if ((PL_origenviron[0] == s + 1)
1549 (PL_origenviron[0] > s &&
1550 PL_origenviron[0] <=
1551 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1554 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1555 s = PL_origenviron[0];
1558 my_setenv("NoNe SuCh", NULL);
1559 /* Force copy of environment. */
1560 for (i = 1; PL_origenviron[i]; i++) {
1561 if (PL_origenviron[i] == s + 1
1564 (PL_origenviron[i] > s &&
1565 PL_origenviron[i] <=
1566 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1569 s = PL_origenviron[i];
1577 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1579 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1584 /* Come here if running an undumped a.out. */
1586 PL_origfilename = savepv(argv[0]);
1587 PL_do_undump = FALSE;
1588 cxstack_ix = -1; /* start label stack again */
1590 assert (!PL_tainted);
1592 S_set_caret_X(aTHX);
1594 init_postdump_symbols(argc,argv,env);
1599 op_free(PL_main_root);
1600 PL_main_root = NULL;
1602 PL_main_start = NULL;
1603 SvREFCNT_dec(PL_main_cv);
1607 oldscope = PL_scopestack_ix;
1608 PL_dowarn = G_WARN_OFF;
1613 parse_body(env,xsinit);
1615 call_list(oldscope, PL_unitcheckav);
1617 call_list(oldscope, PL_checkav);
1624 /* my_exit() was called */
1625 while (PL_scopestack_ix > oldscope)
1628 PL_curstash = PL_defstash;
1630 call_list(oldscope, PL_unitcheckav);
1632 call_list(oldscope, PL_checkav);
1636 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1644 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1645 miniperl, and we need to see those flags reflected in the values here. */
1647 /* What this returns is subject to change. Use the public interface in Config.
1650 S_Internals_V(pTHX_ CV *cv)
1653 #ifdef LOCAL_PATCH_COUNT
1654 const int local_patch_count = LOCAL_PATCH_COUNT;
1656 const int local_patch_count = 0;
1658 const int entries = 3 + local_patch_count;
1660 static char non_bincompat_options[] =
1667 # ifdef PERL_DISABLE_PMC
1670 # ifdef PERL_DONT_CREATE_GVSV
1671 " PERL_DONT_CREATE_GVSV"
1673 # ifdef PERL_EXTERNAL_GLOB
1674 " PERL_EXTERNAL_GLOB"
1676 # ifdef PERL_IS_MINIPERL
1679 # ifdef PERL_MALLOC_WRAP
1682 # ifdef PERL_MEM_LOG
1685 # ifdef PERL_MEM_LOG_NOIMPL
1686 " PERL_MEM_LOG_NOIMPL"
1688 # ifdef PERL_USE_DEVEL
1691 # ifdef PERL_USE_SAFE_PUTENV
1692 " PERL_USE_SAFE_PUTENV"
1694 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1695 " USE_ATTRIBUTES_FOR_PERLIO"
1697 # ifdef USE_FAST_STDIO
1700 # ifdef USE_PERL_ATOF
1703 # ifdef USE_SITECUSTOMIZE
1704 " USE_SITECUSTOMIZE"
1707 PERL_UNUSED_ARG(cv);
1708 PERL_UNUSED_ARG(items);
1710 EXTEND(SP, entries);
1712 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1713 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1714 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1718 PUSHs(Perl_newSVpvn_flags(aTHX_
1719 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1722 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1726 PUSHs(&PL_sv_undef);
1729 for (i = 1; i <= local_patch_count; i++) {
1730 /* This will be an undef, if PL_localpatches[i] is NULL. */
1731 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1737 #define INCPUSH_UNSHIFT 0x01
1738 #define INCPUSH_ADD_OLD_VERS 0x02
1739 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1740 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1741 #define INCPUSH_NOT_BASEDIR 0x10
1742 #define INCPUSH_CAN_RELOCATE 0x20
1743 #define INCPUSH_ADD_SUB_DIRS \
1744 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1747 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1751 int argc = PL_origargc;
1752 char **argv = PL_origargv;
1753 const char *scriptname = NULL;
1754 VOL bool dosearch = FALSE;
1756 const char *cddir = NULL;
1757 #ifdef USE_SITECUSTOMIZE
1758 bool minus_f = FALSE;
1760 SV *linestr_sv = newSV_type(SVt_PVIV);
1761 bool add_read_e_script = FALSE;
1763 SvGROW(linestr_sv, 80);
1764 sv_setpvs(linestr_sv,"");
1770 for (argc--,argv++; argc > 0; argc--,argv++) {
1771 if (argv[0][0] != '-' || !argv[0][1])
1777 #ifndef PERL_STRICT_CR
1801 if ((s = moreswitches(s)))
1806 CHECK_MALLOC_TOO_LATE_FOR('t');
1807 if( !PL_tainting ) {
1808 PL_taint_warn = TRUE;
1814 CHECK_MALLOC_TOO_LATE_FOR('T');
1816 PL_taint_warn = FALSE;
1824 forbid_setid('e', FALSE);
1826 PL_e_script = newSVpvs("");
1827 add_read_e_script = TRUE;
1830 sv_catpv(PL_e_script, s);
1832 sv_catpv(PL_e_script, argv[1]);
1836 Perl_croak(aTHX_ "No code specified for -%c", c);
1837 sv_catpvs(PL_e_script, "\n");
1841 #ifdef USE_SITECUSTOMIZE
1847 case 'I': /* -I handled both here and in moreswitches() */
1848 forbid_setid('I', FALSE);
1849 if (!*++s && (s=argv[1]) != NULL) {
1853 STRLEN len = strlen(s);
1854 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1857 Perl_croak(aTHX_ "No directory specified for -I");
1860 forbid_setid('S', FALSE);
1869 opts_prog = newSVpvs("use Config; Config::_V()");
1873 opts_prog = Perl_newSVpvf(aTHX_
1874 "use Config; Config::config_vars(qw%c%s%c)",
1878 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1879 /* don't look for script or read stdin */
1880 scriptname = BIT_BUCKET;
1884 PL_doextract = TRUE;
1892 if (!*++s || isSPACE(*s)) {
1896 /* catch use of gnu style long options */
1897 if (strEQ(s, "version")) {
1901 if (strEQ(s, "help")) {
1908 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1919 #ifndef SECURE_INTERNAL_GETENV
1922 (s = PerlEnv_getenv("PERL5OPT")))
1926 if (*s == '-' && *(s+1) == 'T') {
1927 CHECK_MALLOC_TOO_LATE_FOR('T');
1929 PL_taint_warn = FALSE;
1932 char *popt_copy = NULL;
1945 if (!strchr("CDIMUdmtwW", *s))
1946 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1950 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1951 s = popt_copy + (s - d);
1959 if( !PL_tainting ) {
1960 PL_taint_warn = TRUE;
1971 #if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
1973 /* SITELIB_EXP is a function call on Win32.
1974 The games with local $! are to avoid setting errno if there is no
1975 sitecustomize script. */
1976 const char *const sitelib = SITELIB_EXP;
1977 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1979 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
1984 scriptname = argv[0];
1987 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1989 else if (scriptname == NULL) {
1991 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1997 /* Set $^X early so that it can be used for relocatable paths in @INC */
1998 assert (!PL_tainted);
2000 S_set_caret_X(aTHX);
2005 bool suidscript = FALSE;
2007 open_script(scriptname, dosearch, &suidscript, &rsfp);
2009 validate_suid(validarg, scriptname, fdscript, suidscript,
2013 # if defined(SIGCHLD) || defined(SIGCLD)
2016 # define SIGCHLD SIGCLD
2018 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2019 if (sigstate == (Sighandler_t) SIG_IGN) {
2020 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2021 "Can't ignore signal CHLD, forcing to default");
2022 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2030 /* This will croak if suidscript is true, as -x cannot be used with
2032 forbid_setid('x', suidscript);
2033 /* Hence you can't get here if suidscript is true */
2035 find_beginning(linestr_sv, rsfp);
2036 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2037 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2041 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2042 CvUNIQUE_on(PL_compcv);
2044 CvPADLIST(PL_compcv) = pad_new(0);
2046 PL_isarev = newHV();
2049 boot_core_UNIVERSAL();
2051 newXS("Internals::V", S_Internals_V, __FILE__);
2054 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2056 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2062 # ifdef HAS_SOCKS5_INIT
2063 socks5_init(argv[0]);
2069 init_predump_symbols();
2070 /* init_postdump_symbols not currently designed to be called */
2071 /* more than once (ENV isn't cleared first, for example) */
2072 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2074 init_postdump_symbols(argc,argv,env);
2076 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2077 * or explicitly in some platforms.
2078 * locale.c:Perl_init_i18nl10n() if the environment
2079 * look like the user wants to use UTF-8. */
2080 #if defined(__SYMBIAN32__)
2081 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2083 # ifndef PERL_IS_MINIPERL
2085 /* Requires init_predump_symbols(). */
2086 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2091 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2092 * and the default open disciplines. */
2093 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2094 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2096 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2097 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2098 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2100 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2101 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2102 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2104 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2105 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2106 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2108 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2109 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2112 sv_setpvs(sv, ":utf8\0:utf8");
2114 sv_setpvs(sv, ":utf8\0");
2117 sv_setpvs(sv, "\0:utf8");
2126 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2127 if (strEQ(s, "unsafe"))
2128 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2129 else if (strEQ(s, "safe"))
2130 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2132 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2139 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2143 PL_xmlfp = PerlIO_stdout();
2145 PL_xmlfp = PerlIO_open(s, "w");
2147 Perl_croak(aTHX_ "Can't open %s", s);
2149 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2155 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2156 PL_madskills = atoi(s);
2157 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2162 lex_start(linestr_sv, rsfp, TRUE);
2163 PL_subname = newSVpvs("main");
2165 if (add_read_e_script)
2166 filter_add(read_e_script, NULL);
2168 /* now parse the script */
2170 SETERRNO(0,SS_NORMAL);
2171 if (yyparse() || PL_parser->error_count) {
2173 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2175 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2179 CopLINE_set(PL_curcop, 0);
2180 PL_curstash = PL_defstash;
2182 SvREFCNT_dec(PL_e_script);
2190 SAVECOPFILE(PL_curcop);
2191 SAVECOPLINE(PL_curcop);
2192 gv_check(PL_defstash);
2201 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2202 dump_mstats("after compilation:");
2207 PL_restartjmpenv = NULL;
2213 =for apidoc perl_run
2215 Tells a Perl interpreter to run. See L<perlembed>.
2228 PERL_ARGS_ASSERT_PERL_RUN;
2229 #ifndef MULTIPLICITY
2230 PERL_UNUSED_ARG(my_perl);
2233 oldscope = PL_scopestack_ix;
2241 cxstack_ix = -1; /* start context stack again */
2243 case 0: /* normal completion */
2247 case 2: /* my_exit() */
2248 while (PL_scopestack_ix > oldscope)
2251 PL_curstash = PL_defstash;
2252 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2253 PL_endav && !PL_minus_c)
2254 call_list(oldscope, PL_endav);
2256 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2257 dump_mstats("after execution: ");
2263 POPSTACK_TO(PL_mainstack);
2266 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2277 S_run_body(pTHX_ I32 oldscope)
2280 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2281 PL_sawampersand ? "Enabling" : "Omitting"));
2283 if (!PL_restartop) {
2287 exit(0); /* less likely to core dump than my_exit(0) */
2291 if (DEBUG_x_TEST || DEBUG_B_TEST)
2292 dump_all_perl(!DEBUG_B_TEST);
2294 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2298 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2301 if (PERLDB_SINGLE && PL_DBsingle)
2302 sv_setiv(PL_DBsingle, 1);
2304 call_list(oldscope, PL_initav);
2305 #ifdef PERL_DEBUG_READONLY_OPS
2306 Perl_pending_Slabs_to_ro(aTHX);
2313 PL_restartjmpenv = NULL;
2314 PL_op = PL_restartop;
2318 else if (PL_main_start) {
2319 CvDEPTH(PL_main_cv) = 1;
2320 PL_op = PL_main_start;
2328 =head1 SV Manipulation Functions
2330 =for apidoc p||get_sv
2332 Returns the SV of the specified Perl scalar. C<flags> are passed to
2333 C<gv_fetchpv>. If C<GV_ADD> is set and the
2334 Perl variable does not exist then it will be created. If C<flags> is zero
2335 and the variable does not exist then NULL is returned.
2341 Perl_get_sv(pTHX_ const char *name, I32 flags)
2345 PERL_ARGS_ASSERT_GET_SV;
2347 gv = gv_fetchpv(name, flags, SVt_PV);
2354 =head1 Array Manipulation Functions
2356 =for apidoc p||get_av
2358 Returns the AV of the specified Perl array. C<flags> are passed to
2359 C<gv_fetchpv>. If C<GV_ADD> is set and the
2360 Perl variable does not exist then it will be created. If C<flags> is zero
2361 and the variable does not exist then NULL is returned.
2367 Perl_get_av(pTHX_ const char *name, I32 flags)
2369 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2371 PERL_ARGS_ASSERT_GET_AV;
2381 =head1 Hash Manipulation Functions
2383 =for apidoc p||get_hv
2385 Returns the HV of the specified Perl hash. C<flags> are passed to
2386 C<gv_fetchpv>. If C<GV_ADD> is set and the
2387 Perl variable does not exist then it will be created. If C<flags> is zero
2388 and the variable does not exist then NULL is returned.
2394 Perl_get_hv(pTHX_ const char *name, I32 flags)
2396 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2398 PERL_ARGS_ASSERT_GET_HV;
2408 =head1 CV Manipulation Functions
2410 =for apidoc p||get_cvn_flags
2412 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2413 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2414 exist then it will be declared (which has the same effect as saying
2415 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2416 then NULL is returned.
2418 =for apidoc p||get_cv
2420 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2426 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2428 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2429 /* XXX this is probably not what they think they're getting.
2430 * It has the same effect as "sub name;", i.e. just a forward
2433 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2435 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2436 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
2437 return newSUB(start_subparse(FALSE, 0),
2438 newSVOP(OP_CONST, 0, sv),
2446 /* Nothing in core calls this now, but we can't replace it with a macro and
2447 move it to mathoms.c as a macro would evaluate name twice. */
2449 Perl_get_cv(pTHX_ const char *name, I32 flags)
2451 PERL_ARGS_ASSERT_GET_CV;
2453 return get_cvn_flags(name, strlen(name), flags);
2456 /* Be sure to refetch the stack pointer after calling these routines. */
2460 =head1 Callback Functions
2462 =for apidoc p||call_argv
2464 Performs a callback to the specified Perl sub. See L<perlcall>.
2470 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2472 /* See G_* flags in cop.h */
2473 /* null terminated arg list */
2478 PERL_ARGS_ASSERT_CALL_ARGV;
2483 mXPUSHs(newSVpv(*argv,0));
2488 return call_pv(sub_name, flags);
2492 =for apidoc p||call_pv
2494 Performs a callback to the specified Perl sub. See L<perlcall>.
2500 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2501 /* name of the subroutine */
2502 /* See G_* flags in cop.h */
2504 PERL_ARGS_ASSERT_CALL_PV;
2506 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2510 =for apidoc p||call_method
2512 Performs a callback to the specified Perl method. The blessed object must
2513 be on the stack. See L<perlcall>.
2519 Perl_call_method(pTHX_ const char *methname, I32 flags)
2520 /* name of the subroutine */
2521 /* See G_* flags in cop.h */
2524 PERL_ARGS_ASSERT_CALL_METHOD;
2526 len = strlen(methname);
2528 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2529 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2532 /* May be called with any of a CV, a GV, or an SV containing the name. */
2534 =for apidoc p||call_sv
2536 Performs a callback to the Perl sub whose name is in the SV. See
2543 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2544 /* See G_* flags in cop.h */
2547 LOGOP myop; /* fake syntax tree node */
2552 bool oldcatch = CATCH_GET;
2554 OP* const oldop = PL_op;
2557 PERL_ARGS_ASSERT_CALL_SV;
2559 if (flags & G_DISCARD) {
2563 if (!(flags & G_WANT)) {
2564 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2569 Zero(&myop, 1, LOGOP);
2570 myop.op_next = NULL;
2571 if (!(flags & G_NOARGS))
2572 myop.op_flags |= OPf_STACKED;
2573 myop.op_flags |= OP_GIMME_REVERSE(flags);
2577 EXTEND(PL_stack_sp, 1);
2578 *++PL_stack_sp = sv;
2580 oldscope = PL_scopestack_ix;
2582 if (PERLDB_SUB && PL_curstash != PL_debstash
2583 /* Handle first BEGIN of -d. */
2584 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2585 /* Try harder, since this may have been a sighandler, thus
2586 * curstash may be meaningless. */
2587 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2588 && !(flags & G_NODEBUG))
2589 PL_op->op_private |= OPpENTERSUB_DB;
2591 if (flags & G_METHOD) {
2592 Zero(&method_op, 1, UNOP);
2593 method_op.op_next = PL_op;
2594 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2595 method_op.op_type = OP_METHOD;
2596 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2597 myop.op_type = OP_ENTERSUB;
2598 PL_op = (OP*)&method_op;
2601 if (!(flags & G_EVAL)) {
2603 CALL_BODY_SUB((OP*)&myop);
2604 retval = PL_stack_sp - (PL_stack_base + oldmark);
2605 CATCH_SET(oldcatch);
2608 myop.op_other = (OP*)&myop;
2610 create_eval_scope(flags|G_FAKINGEVAL);
2618 CALL_BODY_SUB((OP*)&myop);
2619 retval = PL_stack_sp - (PL_stack_base + oldmark);
2620 if (!(flags & G_KEEPERR)) {
2628 /* my_exit() was called */
2629 PL_curstash = PL_defstash;
2636 PL_restartjmpenv = NULL;
2637 PL_op = PL_restartop;
2641 PL_stack_sp = PL_stack_base + oldmark;
2642 if ((flags & G_WANT) == G_ARRAY)
2646 *++PL_stack_sp = &PL_sv_undef;
2651 if (PL_scopestack_ix > oldscope)
2652 delete_eval_scope();
2656 if (flags & G_DISCARD) {
2657 PL_stack_sp = PL_stack_base + oldmark;
2666 /* Eval a string. The G_EVAL flag is always assumed. */
2669 =for apidoc p||eval_sv
2671 Tells Perl to C<eval> the string in the SV.
2677 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2679 /* See G_* flags in cop.h */
2683 UNOP myop; /* fake syntax tree node */
2684 VOL I32 oldmark = SP - PL_stack_base;
2687 OP* const oldop = PL_op;
2690 PERL_ARGS_ASSERT_EVAL_SV;
2692 if (flags & G_DISCARD) {
2699 Zero(PL_op, 1, UNOP);
2700 EXTEND(PL_stack_sp, 1);
2701 *++PL_stack_sp = sv;
2703 if (!(flags & G_NOARGS))
2704 myop.op_flags = OPf_STACKED;
2705 myop.op_next = NULL;
2706 myop.op_type = OP_ENTEREVAL;
2707 myop.op_flags |= OP_GIMME_REVERSE(flags);
2708 if (flags & G_KEEPERR)
2709 myop.op_flags |= OPf_SPECIAL;
2711 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2712 * before a PUSHEVAL, which corrupts the stack after a croak */
2713 TAINT_PROPER("eval_sv()");
2719 CALL_BODY_EVAL((OP*)&myop);
2720 retval = PL_stack_sp - (PL_stack_base + oldmark);
2721 if (!(flags & G_KEEPERR)) {
2729 /* my_exit() was called */
2730 PL_curstash = PL_defstash;
2737 PL_restartjmpenv = NULL;
2738 PL_op = PL_restartop;
2742 PL_stack_sp = PL_stack_base + oldmark;
2743 if ((flags & G_WANT) == G_ARRAY)
2747 *++PL_stack_sp = &PL_sv_undef;
2753 if (flags & G_DISCARD) {
2754 PL_stack_sp = PL_stack_base + oldmark;
2764 =for apidoc p||eval_pv
2766 Tells Perl to C<eval> the given string and return an SV* result.
2772 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2776 SV* sv = newSVpv(p, 0);
2778 PERL_ARGS_ASSERT_EVAL_PV;
2780 eval_sv(sv, G_SCALAR);
2787 if (croak_on_error && SvTRUE(ERRSV)) {
2788 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2794 /* Require a module. */
2797 =head1 Embedding Functions
2799 =for apidoc p||require_pv
2801 Tells Perl to C<require> the file named by the string argument. It is
2802 analogous to the Perl code C<eval "require '$file'">. It's even
2803 implemented that way; consider using load_module instead.
2808 Perl_require_pv(pTHX_ const char *pv)
2814 PERL_ARGS_ASSERT_REQUIRE_PV;
2816 PUSHSTACKi(PERLSI_REQUIRE);
2818 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2819 eval_sv(sv_2mortal(sv), G_DISCARD);
2825 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2827 /* This message really ought to be max 23 lines.
2828 * Removed -h because the user already knows that option. Others? */
2830 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2831 minimum of 509 character string literals. */
2832 static const char * const usage_msg[] = {
2833 " -0[octal] specify record separator (\\0, if no argument)\n"
2834 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2835 " -C[number/list] enables the listed Unicode features\n"
2836 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2837 " -d[:debugger] run program under debugger\n"
2838 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2839 " -e program one line of program (several -e's allowed, omit programfile)\n"
2840 " -E program like -e, but enables all optional features\n"
2841 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2842 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2843 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2844 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2845 " -l[octal] enable line ending processing, specifies line terminator\n"
2846 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2847 " -n assume \"while (<>) { ... }\" loop around program\n"
2848 " -p assume loop like -n but print line also, like sed\n"
2849 " -s enable rudimentary parsing for switches after programfile\n"
2850 " -S look for programfile using PATH environment variable\n",
2851 " -t enable tainting warnings\n"
2852 " -T enable tainting checks\n"
2853 " -u dump core after parsing program\n"
2854 " -U allow unsafe operations\n"
2855 " -v print version, patchlevel and license\n"
2856 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2857 " -w enable many useful warnings\n"
2858 " -W enable all warnings\n"
2859 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2860 " -X disable all warnings\n"
2862 "Run 'perldoc perl' for more help with Perl.\n\n",
2865 const char * const *p = usage_msg;
2866 PerlIO *out = PerlIO_stdout();
2868 PERL_ARGS_ASSERT_USAGE;
2871 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2874 PerlIO_puts(out, *p++);
2877 /* convert a string of -D options (or digits) into an int.
2878 * sets *s to point to the char after the options */
2882 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2884 static const char * const usage_msgd[] = {
2885 " Debugging flag values: (see also -d)\n"
2886 " p Tokenizing and parsing (with v, displays parse stack)\n"
2887 " s Stack snapshots (with v, displays all stacks)\n"
2888 " l Context (loop) stack processing\n"
2889 " t Trace execution\n"
2890 " o Method and overloading resolution\n",
2891 " c String/numeric conversions\n"
2892 " P Print profiling info, source file input state\n"
2893 " m Memory and SV allocation\n"
2894 " f Format processing\n"
2895 " r Regular expression parsing and execution\n"
2896 " x Syntax tree dump\n",
2897 " u Tainting checks\n"
2898 " H Hash dump -- usurps values()\n"
2899 " X Scratchpad allocation\n"
2902 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2903 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2904 " v Verbose: use in conjunction with other flags\n"
2905 " C Copy On Write\n"
2906 " A Consistency checks on internal structures\n"
2907 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2908 " M trace smart match resolution\n"
2909 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
2914 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2917 /* if adding extra options, remember to update DEBUG_MASK */
2918 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
2920 for (; isALNUM(**s); (*s)++) {
2921 const char * const d = strchr(debopts,**s);
2923 i |= 1 << (d - debopts);
2924 else if (ckWARN_d(WARN_DEBUGGING))
2925 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2926 "invalid option -D%c, use -D'' to see choices\n", **s);
2929 else if (isDIGIT(**s)) {
2931 for (; isALNUM(**s); (*s)++) ;
2933 else if (givehelp) {
2934 const char *const *p = usage_msgd;
2935 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
2938 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2939 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2940 "-Dp not implemented on this platform\n");
2946 /* This routine handles any switches that can be given during run */
2949 Perl_moreswitches(pTHX_ const char *s)
2953 const char option = *s; /* used to remember option in -m/-M code */
2955 PERL_ARGS_ASSERT_MORESWITCHES;
2963 SvREFCNT_dec(PL_rs);
2964 if (s[1] == 'x' && s[2]) {
2965 const char *e = s+=2;
2971 flags = PERL_SCAN_SILENT_ILLDIGIT;
2972 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2973 if (s + numlen < e) {
2974 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2978 PL_rs = newSVpvs("");
2979 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
2980 tmps = (U8*)SvPVX(PL_rs);
2981 uvchr_to_utf8(tmps, rschar);
2982 SvCUR_set(PL_rs, UNISKIP(rschar));
2987 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2988 if (rschar & ~((U8)~0))
2989 PL_rs = &PL_sv_undef;
2990 else if (!rschar && numlen >= 2)
2991 PL_rs = newSVpvs("");
2993 char ch = (char)rschar;
2994 PL_rs = newSVpvn(&ch, 1);
2997 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3002 PL_unicode = parse_unicode_opts( (const char **)&s );
3003 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3009 while (*s && !isSPACE(*s)) ++s;
3010 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3021 forbid_setid('d', FALSE);
3024 /* -dt indicates to the debugger that threads will be used */
3025 if (*s == 't' && !isALNUM(s[1])) {
3027 my_setenv("PERL5DB_THREADED", "1");
3030 /* The following permits -d:Mod to accepts arguments following an =
3031 in the fashion that -MSome::Mod does. */
3032 if (*s == ':' || *s == '=') {
3033 const char *start = ++s;
3034 const char *const end = s + strlen(s);
3035 SV * const sv = newSVpvs("use Devel::");
3037 /* We now allow -d:Module=Foo,Bar */
3038 while(isALNUM(*s) || *s==':') ++s;
3040 sv_catpvn(sv, start, end - start);
3042 sv_catpvn(sv, start, s-start);
3043 /* Don't use NUL as q// delimiter here, this string goes in the
3045 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3048 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3052 PL_perldb = PERLDB_ALL;
3059 forbid_setid('D', FALSE);
3061 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3062 #else /* !DEBUGGING */
3063 if (ckWARN_d(WARN_DEBUGGING))
3064 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3065 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3066 for (s++; isALNUM(*s); s++) ;
3071 usage(PL_origargv[0]);
3074 Safefree(PL_inplace);
3075 #if defined(__CYGWIN__) /* do backup extension automagically */
3076 if (*(s+1) == '\0') {
3077 PL_inplace = savepvs(".bak");
3080 #endif /* __CYGWIN__ */
3082 const char * const start = ++s;
3083 while (*s && !isSPACE(*s))
3086 PL_inplace = savepvn(start, s - start);
3090 if (*s == '-') /* Additional switches on #! line. */
3094 case 'I': /* -I handled both here and in parse_body() */
3095 forbid_setid('I', FALSE);
3097 while (*s && isSPACE(*s))
3102 /* ignore trailing spaces (possibly followed by other switches) */
3104 for (e = p; *e && !isSPACE(*e); e++) ;
3108 } while (*p && *p != '-');
3110 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3116 Perl_croak(aTHX_ "No directory specified for -I");
3122 SvREFCNT_dec(PL_ors_sv);
3128 PL_ors_sv = newSVpvs("\n");
3129 numlen = 3 + (*s == '0');
3130 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3134 if (RsPARA(PL_rs)) {
3135 PL_ors_sv = newSVpvs("\n\n");
3138 PL_ors_sv = newSVsv(PL_rs);
3143 forbid_setid('M', FALSE); /* XXX ? */
3146 forbid_setid('m', FALSE); /* XXX ? */
3151 const char *use = "use ";
3153 /* -M-foo == 'no foo' */
3154 /* Leading space on " no " is deliberate, to make both
3155 possibilities the same length. */
3156 if (*s == '-') { use = " no "; ++s; }
3157 sv = newSVpvn(use,4);
3159 /* We allow -M'Module qw(Foo Bar)' */
3160 while(isALNUM(*s) || *s==':') {
3169 Perl_croak(aTHX_ "Module name required with -%c option",
3172 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3173 "contains single ':'",
3174 (int)(s - start), start, option);
3175 end = s + strlen(s);
3177 sv_catpvn(sv, start, end - start);
3178 if (option == 'm') {
3180 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3181 sv_catpvs( sv, " ()");
3184 sv_catpvn(sv, start, s-start);
3185 /* Use NUL as q''-delimiter. */
3186 sv_catpvs(sv, " split(/,/,q\0");
3188 sv_catpvn(sv, s, end - s);
3189 sv_catpvs(sv, "\0)");
3192 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3195 Perl_croak(aTHX_ "Missing argument to -%c", option);
3206 forbid_setid('s', FALSE);
3207 PL_doswitches = TRUE;
3221 PL_do_undump = TRUE;
3229 if (!sv_derived_from(PL_patchlevel, "version"))
3230 upg_version(PL_patchlevel, TRUE);
3233 SV* level= vstringify(PL_patchlevel);
3234 #ifdef PERL_PATCHNUM
3235 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3236 SV *num = newSVpvs(PERL_PATCHNUM "*");
3238 SV *num = newSVpvs(PERL_PATCHNUM);
3241 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3242 SvREFCNT_dec(level);
3245 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3249 PerlIO_printf(PerlIO_stdout(),
3250 "\nThis is perl " STRINGIFY(PERL_REVISION)
3251 ", version " STRINGIFY(PERL_VERSION)
3252 ", subversion " STRINGIFY(PERL_SUBVERSION)
3253 " (%"SVf") built for " ARCHNAME, level
3255 SvREFCNT_dec(level);
3258 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3259 PerlIO_printf(PerlIO_stdout(),
3260 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3261 SVfARG(vstringify(PL_patchlevel))));
3262 PerlIO_printf(PerlIO_stdout(),
3263 Perl_form(aTHX_ " built under %s at %s %s\n",
3264 OSNAME, __DATE__, __TIME__));
3265 PerlIO_printf(PerlIO_stdout(),
3266 Perl_form(aTHX_ " OS Specific Release: %s\n",
3269 #if defined(LOCAL_PATCH_COUNT)
3270 if (LOCAL_PATCH_COUNT > 0)
3271 PerlIO_printf(PerlIO_stdout(),
3272 "\n(with %d registered patch%s, "
3273 "see perl -V for more detail)",
3275 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3278 PerlIO_printf(PerlIO_stdout(),
3279 "\n\nCopyright 1987-2010, Larry Wall\n");
3281 PerlIO_printf(PerlIO_stdout(),
3282 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3285 PerlIO_printf(PerlIO_stdout(),
3286 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3287 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3290 PerlIO_printf(PerlIO_stdout(),
3291 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3292 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3295 PerlIO_printf(PerlIO_stdout(),
3296 "atariST series port, ++jrb bammi@cadence.com\n");
3299 PerlIO_printf(PerlIO_stdout(),
3300 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3303 PerlIO_printf(PerlIO_stdout(),
3304 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3307 PerlIO_printf(PerlIO_stdout(),
3308 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3311 PerlIO_printf(PerlIO_stdout(),
3312 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3315 PerlIO_printf(PerlIO_stdout(),
3316 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3319 PerlIO_printf(PerlIO_stdout(),
3320 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3323 PerlIO_printf(PerlIO_stdout(),
3324 "EPOC port by Olaf Flebbe, 1999-2002\n");
3327 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3328 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3331 #ifdef __SYMBIAN32__
3332 PerlIO_printf(PerlIO_stdout(),
3333 "Symbian port by Nokia, 2004-2005\n");
3335 #ifdef BINARY_BUILD_NOTICE
3336 BINARY_BUILD_NOTICE;
3338 PerlIO_printf(PerlIO_stdout(),
3340 Perl may be copied only under the terms of either the Artistic License or the\n\
3341 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3342 Complete documentation for Perl, including FAQ lists, should be found on\n\
3343 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3344 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3347 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3348 PL_dowarn |= G_WARN_ON;
3353 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3354 if (!specialWARN(PL_compiling.cop_warnings))
3355 PerlMemShared_free(PL_compiling.cop_warnings);
3356 PL_compiling.cop_warnings = pWARN_ALL ;
3360 PL_dowarn = G_WARN_ALL_OFF;
3361 if (!specialWARN(PL_compiling.cop_warnings))
3362 PerlMemShared_free(PL_compiling.cop_warnings);
3363 PL_compiling.cop_warnings = pWARN_NONE ;
3370 if (s[0] == '-') /* Additional switches on #! line. */
3375 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3381 #ifdef ALTERNATE_SHEBANG
3382 case 'S': /* OS/2 needs -S on "extproc" line. */
3386 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3391 /* compliments of Tom Christiansen */
3393 /* unexec() can be found in the Gnu emacs distribution */
3394 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3397 Perl_my_unexec(pTHX)
3399 PERL_UNUSED_CONTEXT;
3401 SV * prog = newSVpv(BIN_EXP, 0);
3402 SV * file = newSVpv(PL_origfilename, 0);
3406 sv_catpvs(prog, "/perl");
3407 sv_catpvs(file, ".perldump");
3409 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3410 /* unexec prints msg to stderr in case of failure */
3411 PerlProc_exit(status);
3414 # include <lib$routines.h>
3415 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3416 # elif defined(WIN32) || defined(__CYGWIN__)
3417 Perl_croak(aTHX_ "dump is not supported");
3419 ABORT(); /* for use with undump */
3424 /* initialize curinterp */
3430 # define PERLVAR(var,type)
3431 # define PERLVARA(var,n,type)
3432 # if defined(PERL_IMPLICIT_CONTEXT)
3433 # define PERLVARI(var,type,init) aTHX->var = init;
3434 # define PERLVARIC(var,type,init) aTHX->var = init;
3436 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3437 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
3439 # include "intrpvar.h"
3445 # define PERLVAR(var,type)
3446 # define PERLVARA(var,n,type)
3447 # define PERLVARI(var,type,init) PL_##var = init;
3448 # define PERLVARIC(var,type,init) PL_##var = init;
3449 # include "intrpvar.h"
3456 /* As these are inside a structure, PERLVARI isn't capable of initialising
3458 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3459 PL_reg_poscache = PL_reg_starttry = NULL;
3463 S_init_main_stash(pTHX)
3468 PL_curstash = PL_defstash = newHV();
3469 /* We know that the string "main" will be in the global shared string
3470 table, so it's a small saving to use it rather than allocate another
3472 PL_curstname = newSVpvs_share("main");
3473 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3474 /* If we hadn't caused another reference to "main" to be in the shared
3475 string table above, then it would be worth reordering these two,
3476 because otherwise all we do is delete "main" from it as a consequence
3477 of the SvREFCNT_dec, only to add it again with hv_name_set */
3478 SvREFCNT_dec(GvHV(gv));
3479 hv_name_set(PL_defstash, "main", 4, 0);
3480 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3482 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3484 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3485 GvMULTI_on(PL_incgv);
3486 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3487 GvMULTI_on(PL_hintgv);
3488 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3489 SvREFCNT_inc_simple_void(PL_defgv);
3490 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3491 SvREFCNT_inc_simple_void(PL_errgv);
3492 GvMULTI_on(PL_errgv);
3493 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3494 GvMULTI_on(PL_replgv);
3495 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3496 #ifdef PERL_DONT_CREATE_GVSV
3499 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3501 PL_curstash = PL_defstash;
3502 CopSTASH_set(&PL_compiling, PL_defstash);
3503 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3504 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3506 /* We must init $/ before switches are processed. */
3507 sv_setpvs(get_sv("/", GV_ADD), "\n");
3511 S_open_script(pTHX_ const char *scriptname, bool dosearch,
3512 bool *suidscript, PerlIO **rsfpp)
3517 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3520 PL_origfilename = savepvs("-e");
3523 /* if find_script() returns, it returns a malloc()-ed value */
3524 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3526 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3527 const char *s = scriptname + 8;
3533 * Tell apart "normal" usage of fdscript, e.g.
3534 * with bash on FreeBSD:
3535 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3536 * from usage in suidperl.
3537 * Does any "normal" usage leave garbage after the number???
3538 * Is it a mistake to use a similar /dev/fd/ construct for
3543 * Be supersafe and do some sanity-checks.
3544 * Still, can we be sure we got the right thing?
3547 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3550 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3552 scriptname = savepv(s + 1);
3553 Safefree(PL_origfilename);
3554 PL_origfilename = (char *)scriptname;
3559 CopFILE_free(PL_curcop);
3560 CopFILE_set(PL_curcop, PL_origfilename);
3561 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3562 scriptname = (char *)"";
3563 if (fdscript >= 0) {
3564 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3565 # if defined(HAS_FCNTL) && defined(F_SETFD)
3567 /* ensure close-on-exec */
3568 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3571 else if (!*scriptname) {
3572 forbid_setid(0, *suidscript);
3573 *rsfpp = PerlIO_stdin();
3576 #ifdef FAKE_BIT_BUCKET
3577 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3578 * is called) and still have the "-e" work. (Believe it or not,
3579 * a /dev/null is required for the "-e" to work because source
3580 * filter magic is used to implement it. ) This is *not* a general
3581 * replacement for a /dev/null. What we do here is create a temp
3582 * file (an empty file), open up that as the script, and then
3583 * immediately close and unlink it. Close enough for jazz. */
3584 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3585 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3586 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3587 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3588 FAKE_BIT_BUCKET_TEMPLATE
3590 const char * const err = "Failed to create a fake bit bucket";
3591 if (strEQ(scriptname, BIT_BUCKET)) {
3592 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3593 int tmpfd = mkstemp(tmpname);
3595 scriptname = tmpname;
3598 Perl_croak(aTHX_ err);
3601 scriptname = mktemp(tmpname);
3603 Perl_croak(aTHX_ err);
3608 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3609 #ifdef FAKE_BIT_BUCKET
3610 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3611 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3612 && strlen(scriptname) == sizeof(tmpname) - 1) {
3615 scriptname = BIT_BUCKET;
3617 # if defined(HAS_FCNTL) && defined(F_SETFD)
3619 /* ensure close-on-exec */
3620 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3624 /* PSz 16 Sep 03 Keep neat error message */
3626 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3628 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3629 CopFILE(PL_curcop), Strerror(errno));
3635 * I_SYSSTATVFS HAS_FSTATVFS
3637 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3638 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3639 * here so that metaconfig picks them up. */
3642 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3643 /* Don't even need this function. */
3646 S_validate_suid(pTHX_ PerlIO *rsfp)
3648 PERL_ARGS_ASSERT_VALIDATE_SUID;
3650 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3653 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3654 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3656 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3659 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3660 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3661 /* not set-id, must be wrapped */
3664 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3667 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3671 register const char *s2;
3673 PERL_ARGS_ASSERT_FIND_BEGINNING;
3675 /* skip forward in input to the real script? */
3677 while (PL_doextract) {
3678 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3679 Perl_croak(aTHX_ "No Perl script found in input\n");
3681 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3682 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3683 PL_doextract = FALSE;
3684 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3686 while (*s == ' ' || *s == '\t') s++;
3688 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3689 || s2[-1] == '_') s2--;
3690 if (strnEQ(s2-4,"perl",4))
3691 while ((s = moreswitches(s)))
3703 PL_uid = PerlProc_getuid();
3704 PL_euid = PerlProc_geteuid();
3705 PL_gid = PerlProc_getgid();
3706 PL_egid = PerlProc_getegid();
3708 PL_uid |= PL_gid << 16;
3709 PL_euid |= PL_egid << 16;
3711 /* Should not happen: */
3712 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3713 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3716 * Should go by suidscript, not uid!=euid: why disallow
3717 * system("ls") in scripts run from setuid things?
3718 * Or, is this run before we check arguments and set suidscript?
3719 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3720 * (We never have suidscript, can we be sure to have fdscript?)
3721 * Or must then go by UID checks? See comments in forbid_setid also.
3725 /* This is used very early in the lifetime of the program,
3726 * before even the options are parsed, so PL_tainting has
3727 * not been initialized properly. */
3729 Perl_doing_taint(int argc, char *argv[], char *envp[])
3731 #ifndef PERL_IMPLICIT_SYS
3732 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3733 * before we have an interpreter-- and the whole point of this
3734 * function is to be called at such an early stage. If you are on
3735 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3736 * "tainted because running with altered effective ids', you'll
3737 * have to add your own checks somewhere in here. The two most
3738 * known samples of 'implicitness' are Win32 and NetWare, neither
3739 * of which has much of concept of 'uids'. */
3740 int uid = PerlProc_getuid();
3741 int euid = PerlProc_geteuid();
3742 int gid = PerlProc_getgid();
3743 int egid = PerlProc_getegid();
3750 if (uid && (euid != uid || egid != gid))
3752 #endif /* !PERL_IMPLICIT_SYS */
3753 /* This is a really primitive check; environment gets ignored only
3754 * if -T are the first chars together; otherwise one gets
3755 * "Too late" message. */
3756 if ( argc > 1 && argv[1][0] == '-'
3757 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3762 /* Passing the flag as a single char rather than a string is a slight space
3763 optimisation. The only message that isn't /^-.$/ is
3764 "program input from stdin", which is substituted in place of '\0', which
3765 could never be a command line flag. */
3767 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3770 char string[3] = "-x";
3771 const char *message = "program input from stdin";
3778 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3779 if (PL_euid != PL_uid)
3780 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3781 if (PL_egid != PL_gid)
3782 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3783 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3785 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3789 Perl_init_dbargs(pTHX)
3791 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3796 /* Someone has already created it.
3797 It might have entries, and if we just turn off AvREAL(), they will
3798 "leak" until global destruction. */
3801 AvREAL_off(PL_dbargs); /* XXX should be REIFY (see av.h) */
3805 Perl_init_debugger(pTHX)
3808 HV * const ostash = PL_curstash;
3810 PL_curstash = PL_debstash;
3812 Perl_init_dbargs(aTHX);
3813 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3814 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3815 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3816 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3817 if (!SvIOK(PL_DBsingle))
3818 sv_setiv(PL_DBsingle, 0);
3819 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3820 if (!SvIOK(PL_DBtrace))
3821 sv_setiv(PL_DBtrace, 0);
3822 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3823 if (!SvIOK(PL_DBsignal))
3824 sv_setiv(PL_DBsignal, 0);
3825 PL_curstash = ostash;
3828 #ifndef STRESS_REALLOC
3829 #define REASONABLE(size) (size)
3831 #define REASONABLE(size) (1) /* unreasonable */
3835 Perl_init_stacks(pTHX)
3838 /* start with 128-item stack and 8K cxstack */
3839 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3840 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3841 PL_curstackinfo->si_type = PERLSI_MAIN;
3842 PL_curstack = PL_curstackinfo->si_stack;
3843 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3845 PL_stack_base = AvARRAY(PL_curstack);
3846 PL_stack_sp = PL_stack_base;
3847 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3849 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3852 PL_tmps_max = REASONABLE(128);
3854 Newx(PL_markstack,REASONABLE(32),I32);
3855 PL_markstack_ptr = PL_markstack;
3856 PL_markstack_max = PL_markstack + REASONABLE(32);
3860 Newx(PL_scopestack,REASONABLE(32),I32);
3862 Newx(PL_scopestack_name,REASONABLE(32),const char*);
3864 PL_scopestack_ix = 0;
3865 PL_scopestack_max = REASONABLE(32);
3867 Newx(PL_savestack,REASONABLE(128),ANY);
3868 PL_savestack_ix = 0;
3869 PL_savestack_max = REASONABLE(128);
3878 while (PL_curstackinfo->si_next)
3879 PL_curstackinfo = PL_curstackinfo->si_next;
3880 while (PL_curstackinfo) {
3881 PERL_SI *p = PL_curstackinfo->si_prev;
3882 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3883 Safefree(PL_curstackinfo->si_cxstack);
3884 Safefree(PL_curstackinfo);
3885 PL_curstackinfo = p;
3887 Safefree(PL_tmps_stack);
3888 Safefree(PL_markstack);
3889 Safefree(PL_scopestack);
3891 Safefree(PL_scopestack_name);
3893 Safefree(PL_savestack);
3898 S_init_predump_symbols(pTHX)
3905 sv_setpvs(get_sv("\"", GV_ADD), " ");
3906 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
3909 /* Historically, PVIOs were blessed into IO::Handle, unless
3910 FileHandle was loaded, in which case they were blessed into
3911 that. Action at a distance.
3912 However, if we simply bless into IO::Handle, we break code
3913 that assumes that PVIOs will have (among others) a seek
3914 method. IO::File inherits from IO::Handle and IO::Seekable,
3915 and provides the needed methods. But if we simply bless into
3916 it, then we break code that assumed that by loading
3917 IO::Handle, *it* would work.
3918 So a compromise is to set up the correct @IO::File::ISA,
3919 so that code that does C<use IO::Handle>; will still work.
3922 isa = get_av("IO::File::ISA", GV_ADD | GV_ADDMULTI);
3923 av_push(isa, newSVpvs("IO::Handle"));
3924 av_push(isa, newSVpvs("IO::Seekable"));
3925 av_push(isa, newSVpvs("Exporter"));
3926 (void) gv_fetchpvs("IO::Handle::", GV_ADD, SVt_PVGV);
3927 (void) gv_fetchpvs("IO::Seekable::", GV_ADD, SVt_PVGV);
3928 (void) gv_fetchpvs("Exporter::", GV_ADD, SVt_PVGV);
3931 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3932 GvMULTI_on(PL_stdingv);
3933 io = GvIOp(PL_stdingv);
3934 IoTYPE(io) = IoTYPE_RDONLY;
3935 IoIFP(io) = PerlIO_stdin();
3936 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
3938 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3940 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3943 IoTYPE(io) = IoTYPE_WRONLY;
3944 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3946 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
3948 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3950 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3951 GvMULTI_on(PL_stderrgv);
3952 io = GvIOp(PL_stderrgv);
3953 IoTYPE(io) = IoTYPE_WRONLY;
3954 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3955 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
3957 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3959 PL_statname = newSV(0); /* last filename we did stat on */
3963 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3967 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
3969 argc--,argv++; /* skip name of script */
3970 if (PL_doswitches) {
3971 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3975 if (argv[0][1] == '-' && !argv[0][2]) {
3979 if ((s = strchr(argv[0], '='))) {
3980 const char *const start_name = argv[0] + 1;
3981 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
3982 TRUE, SVt_PV)), s + 1);
3985 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
3988 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
3989 GvMULTI_on(PL_argvgv);
3990 (void)gv_AVadd(PL_argvgv);
3991 av_clear(GvAVn(PL_argvgv));
3992 for (; argc > 0; argc--,argv++) {
3993 SV * const sv = newSVpv(argv[0],0);
3994 av_push(GvAVn(PL_argvgv),sv);
3995 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3996 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3999 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4000 (void)sv_utf8_decode(sv);
4006 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4011 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4013 PL_toptarget = newSV_type(SVt_PVFM);
4014 sv_setpvs(PL_toptarget, "");
4015 PL_bodytarget = newSV_type(SVt_PVFM);
4016 sv_setpvs(PL_bodytarget, "");
4017 PL_formtarget = PL_bodytarget;
4021 init_argv_symbols(argc,argv);
4023 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4024 sv_setpv(GvSV(tmpgv),PL_origfilename);
4026 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4028 bool env_is_not_environ;
4029 GvMULTI_on(PL_envgv);
4030 hv = GvHVn(PL_envgv);
4031 hv_magic(hv, NULL, PERL_MAGIC_env);
4033 #ifdef USE_ENVIRON_ARRAY
4034 /* Note that if the supplied env parameter is actually a copy
4035 of the global environ then it may now point to free'd memory
4036 if the environment has been modified since. To avoid this
4037 problem we treat env==NULL as meaning 'use the default'
4041 env_is_not_environ = env != environ;
4042 if (env_is_not_environ
4043 # ifdef USE_ITHREADS
4044 && PL_curinterp == aTHX
4053 for (; *env; env++) {
4056 if (!(s = strchr(old_var,'=')) || s == old_var)
4059 #if defined(MSDOS) && !defined(DJGPP)
4061 (void)strupr(old_var);
4064 sv = newSVpv(s+1, 0);
4065 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4066 if (env_is_not_environ)
4070 #endif /* USE_ENVIRON_ARRAY */
4071 #endif /* !PERL_MICRO */
4074 if ((tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4075 SvREADONLY_off(GvSV(tmpgv));
4076 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
4077 SvREADONLY_on(GvSV(tmpgv));
4079 #ifdef THREADS_HAVE_PIDS
4080 PL_ppid = (IV)getppid();
4083 /* touch @F array to prevent spurious warnings 20020415 MJD */
4085 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4090 S_init_perllib(pTHX)
4094 const char *perl5lib = NULL;
4097 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4103 perl5lib = PerlEnv_getenv("PERL5LIB");
4105 * It isn't possible to delete an environment variable with
4106 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4107 * case we treat PERL5LIB as undefined if it has a zero-length value.
4109 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4110 if (perl5lib && *perl5lib != '\0')
4114 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4116 s = PerlEnv_getenv("PERLLIB");
4118 incpush_use_sep(s, 0, 0);
4121 /* Treat PERL5?LIB as a possible search list logical name -- the
4122 * "natural" VMS idiom for a Unix path string. We allow each
4123 * element to be a set of |-separated directories for compatibility.
4127 if (my_trnlnm("PERL5LIB",buf,0))
4129 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4130 } while (my_trnlnm("PERL5LIB",buf,++idx));
4132 while (my_trnlnm("PERLLIB",buf,idx++))
4133 incpush_use_sep(buf, 0, 0);
4138 #ifndef PERL_IS_MINIPERL
4139 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4140 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4142 /* Use the ~-expanded versions of APPLLIB (undocumented),
4143 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4146 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4147 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4151 /* sitearch is always relative to sitelib on Windows for
4152 * DLL-based path intuition to work correctly */
4153 # if !defined(WIN32)
4154 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4155 INCPUSH_CAN_RELOCATE);
4161 /* this picks up sitearch as well */
4162 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4164 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4166 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4170 #ifdef PERL_VENDORARCH_EXP
4171 /* vendorarch is always relative to vendorlib on Windows for
4172 * DLL-based path intuition to work correctly */
4173 # if !defined(WIN32)
4174 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4175 INCPUSH_CAN_RELOCATE);
4179 #ifdef PERL_VENDORLIB_EXP
4181 /* this picks up vendorarch as well */
4182 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4184 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4186 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4187 INCPUSH_CAN_RELOCATE);
4192 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4196 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4200 s = win32_get_privlib(PERL_FS_VERSION, &len);
4202 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4205 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4207 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4211 #ifdef PERL_OTHERLIBDIRS
4212 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4213 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4214 |INCPUSH_CAN_RELOCATE);
4220 * It isn't possible to delete an environment variable with
4221 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4222 * case we treat PERL5LIB as undefined if it has a zero-length value.
4224 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4225 if (perl5lib && *perl5lib != '\0')
4229 incpush_use_sep(perl5lib, 0,
4230 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4232 /* Treat PERL5?LIB as a possible search list logical name -- the
4233 * "natural" VMS idiom for a Unix path string. We allow each
4234 * element to be a set of |-separated directories for compatibility.
4238 if (my_trnlnm("PERL5LIB",buf,0))
4240 incpush_use_sep(buf, 0,
4241 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4242 } while (my_trnlnm("PERL5LIB",buf,++idx));
4246 /* Use the ~-expanded versions of APPLLIB (undocumented),
4247 SITELIB and VENDORLIB for older versions
4250 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4251 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4254 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4255 /* Search for version-specific dirs below here */
4256 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4257 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4261 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4262 /* Search for version-specific dirs below here */
4263 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4264 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4267 #ifdef PERL_OTHERLIBDIRS
4268 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4269 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4270 |INCPUSH_CAN_RELOCATE);
4272 #endif /* !PERL_IS_MINIPERL */
4275 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4278 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4279 # define PERLLIB_SEP ';'
4282 # define PERLLIB_SEP '|'
4284 # define PERLLIB_SEP ':'
4287 #ifndef PERLLIB_MANGLE
4288 # define PERLLIB_MANGLE(s,n) (s)
4291 /* Push a directory onto @INC if it exists.
4292 Generate a new SV if we do this, to save needing to copy the SV we push
4295 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4300 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4302 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4303 S_ISDIR(tmpstatbuf.st_mode)) {
4305 dir = newSVsv(stem);
4307 /* Truncate dir back to stem. */
4308 SvCUR_set(dir, SvCUR(stem));
4314 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4317 const U8 using_sub_dirs
4318 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4319 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4320 const U8 add_versioned_sub_dirs
4321 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4322 const U8 add_archonly_sub_dirs
4323 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4324 #ifdef PERL_INC_VERSION_LIST
4325 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4327 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4328 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4329 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4330 AV *const inc = GvAVn(PL_incgv);
4332 PERL_ARGS_ASSERT_INCPUSH;
4335 /* Could remove this vestigial extra block, if we don't mind a lot of
4336 re-indenting diff noise. */
4339 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4340 arranged to unshift #! line -I onto the front of @INC. However,
4341 -I can add version and architecture specific libraries, and they
4342 need to go first. The old code assumed that it was always
4343 pushing. Hence to make it work, need to push the architecture
4344 (etc) libraries onto a temporary array, then "unshift" that onto
4345 the front of @INC. */
4346 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4349 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4350 defined to so something (in os2/os2.c), but the code has been
4351 this way, ignoring any possible changed of length, since
4352 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4354 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4356 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4359 /* Do the if() outside the #ifdef to avoid warnings about an unused
4362 #ifdef PERL_RELOCATABLE_INC
4364 * Relocatable include entries are marked with a leading .../
4367 * 0: Remove that leading ".../"
4368 * 1: Remove trailing executable name (anything after the last '/')
4369 * from the perl path to give a perl prefix
4371 * While the @INC element starts "../" and the prefix ends with a real
4372 * directory (ie not . or ..) chop that real directory off the prefix
4373 * and the leading "../" from the @INC element. ie a logical "../"
4375 * Finally concatenate the prefix and the remainder of the @INC element
4376 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4377 * generates /usr/local/lib/perl5
4379 const char *libpath = SvPVX(libdir);
4380 STRLEN libpath_len = SvCUR(libdir);
4381 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4383 SV * const caret_X = get_sv("\030", 0);
4384 /* Going to use the SV just as a scratch buffer holding a C
4390 /* $^X is *the* source of taint if tainting is on, hence
4391 SvPOK() won't be true. */
4393 assert(SvPOKp(caret_X));
4394 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4396 /* Firstly take off the leading .../
4397 If all else fail we'll do the paths relative to the current
4399 sv_chop(libdir, libpath + 4);
4400 /* Don't use SvPV as we're intentionally bypassing taining,
4401 mortal copies that the mg_get of tainting creates, and
4402 corruption that seems to come via the save stack.
4403 I guess that the save stack isn't correctly set up yet. */
4404 libpath = SvPVX(libdir);
4405 libpath_len = SvCUR(libdir);
4407 /* This would work more efficiently with memrchr, but as it's
4408 only a GNU extension we'd need to probe for it and
4409 implement our own. Not hard, but maybe not worth it? */
4411 prefix = SvPVX(prefix_sv);
4412 lastslash = strrchr(prefix, '/');
4414 /* First time in with the *lastslash = '\0' we just wipe off
4415 the trailing /perl from (say) /usr/foo/bin/perl
4419 while ((*lastslash = '\0'), /* Do that, come what may. */
4420 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4421 && (lastslash = strrchr(prefix, '/')))) {
4422 if (lastslash[1] == '\0'
4423 || (lastslash[1] == '.'
4424 && (lastslash[2] == '/' /* ends "/." */
4425 || (lastslash[2] == '/'
4426 && lastslash[3] == '/' /* or "/.." */
4428 /* Prefix ends "/" or "/." or "/..", any of which
4429 are fishy, so don't do any more logical cleanup.
4433 /* Remove leading "../" from path */
4436 /* Next iteration round the loop removes the last
4437 directory name from prefix by writing a '\0' in
4438 the while clause. */
4440 /* prefix has been terminated with a '\0' to the correct
4441 length. libpath points somewhere into the libdir SV.
4442 We need to join the 2 with '/' and drop the result into
4444 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4445 SvREFCNT_dec(libdir);
4446 /* And this is the new libdir. */
4449 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4450 /* Need to taint reloccated paths if running set ID */
4451 SvTAINTED_on(libdir);
4454 SvREFCNT_dec(prefix_sv);
4459 * BEFORE pushing libdir onto @INC we may first push version- and
4460 * archname-specific sub-directories.
4462 if (using_sub_dirs) {
4464 #ifdef PERL_INC_VERSION_LIST
4465 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4466 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4467 const char * const *incver;
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 subdir = newSVsv(libdir);
4487 if (add_versioned_sub_dirs) {
4488 /* .../version/archname if -d .../version/archname */
4489 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4490 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4492 /* .../version if -d .../version */
4493 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4494 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4497 #ifdef PERL_INC_VERSION_LIST
4499 for (incver = incverlist; *incver; incver++) {
4500 /* .../xxx if -d .../xxx */
4501 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4502 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4507 if (add_archonly_sub_dirs) {
4508 /* .../archname if -d .../archname */
4509 sv_catpvs(subdir, "/" ARCHNAME);
4510 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4514 assert (SvREFCNT(subdir) == 1);
4515 SvREFCNT_dec(subdir);
4518 /* finally add this lib directory at the end of @INC */
4520 U32 extra = av_len(av) + 1;
4521 av_unshift(inc, extra + push_basedir);
4523 av_store(inc, extra, libdir);
4525 /* av owns a reference, av_store() expects to be donated a
4526 reference, and av expects to be sane when it's cleared.
4527 If I wanted to be naughty and wrong, I could peek inside the
4528 implementation of av_clear(), realise that it uses
4529 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4530 and so directly steal from it (with a memcpy() to inc, and
4531 then memset() to NULL them out. But people copy code from the
4532 core expecting it to be best practise, so let's use the API.
4533 Although studious readers will note that I'm not checking any
4535 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4539 else if (push_basedir) {
4540 av_push(inc, libdir);
4543 if (!push_basedir) {
4544 assert (SvREFCNT(libdir) == 1);
4545 SvREFCNT_dec(libdir);
4551 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4555 /* This logic has been broken out from S_incpush(). It may be possible to
4558 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4565 /* Break at all separators */
4566 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4568 /* skip any consecutive separators */
4570 /* Uncomment the next line for PATH semantics */
4571 /* But you'll need to write tests */
4572 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4574 incpush(p, (STRLEN)(s - p), flags);
4579 incpush(p, (STRLEN)(end - p), flags);
4584 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4588 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4594 PERL_ARGS_ASSERT_CALL_LIST;
4596 while (av_len(paramList) >= 0) {
4597 cv = MUTABLE_CV(av_shift(paramList));
4599 if (paramList == PL_beginav) {
4600 /* save PL_beginav for compiler */
4601 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4603 else if (paramList == PL_checkav) {
4604 /* save PL_checkav for compiler */
4605 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4607 else if (paramList == PL_unitcheckav) {
4608 /* save PL_unitcheckav for compiler */
4609 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4620 PL_madskills |= 16384;
4625 PL_madskills &= ~16384;
4628 (void)SvPV_const(atsv, len);
4630 PL_curcop = &PL_compiling;
4631 CopLINE_set(PL_curcop, oldline);
4632 if (paramList == PL_beginav)
4633 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4635 Perl_sv_catpvf(aTHX_ atsv,
4636 "%s failed--call queue aborted",
4637 paramList == PL_checkav ? "CHECK"
4638 : paramList == PL_initav ? "INIT"
4639 : paramList == PL_unitcheckav ? "UNITCHECK"
4641 while (PL_scopestack_ix > oldscope)
4644 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4651 /* my_exit() was called */
4652 while (PL_scopestack_ix > oldscope)
4655 PL_curstash = PL_defstash;
4656 PL_curcop = &PL_compiling;
4657 CopLINE_set(PL_curcop, oldline);
4663 PL_curcop = &PL_compiling;
4664 CopLINE_set(PL_curcop, oldline);
4667 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4676 Perl_my_exit(pTHX_ U32 status)
4687 STATUS_EXIT_SET(status);
4694 Perl_my_failure_exit(pTHX)
4698 /* We have been called to fall on our sword. The desired exit code
4699 * should be already set in STATUS_UNIX, but could be shifted over
4700 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4703 * If an error code has not been set, then force the issue.
4705 if (MY_POSIX_EXIT) {
4707 /* According to the die_exit.t tests, if errno is non-zero */
4708 /* It should be used for the error status. */
4710 if (errno == EVMSERR) {
4711 STATUS_NATIVE = vaxc$errno;
4714 /* According to die_exit.t tests, if the child_exit code is */
4715 /* also zero, then we need to exit with a code of 255 */
4716 if ((errno != 0) && (errno < 256))
4717 STATUS_UNIX_EXIT_SET(errno);
4718 else if (STATUS_UNIX < 255) {
4719 STATUS_UNIX_EXIT_SET(255);
4724 /* The exit code could have been set by $? or vmsish which
4725 * means that it may not have fatal set. So convert
4726 * success/warning codes to fatal with out changing
4727 * the POSIX status code. The severity makes VMS native
4728 * status handling work, while UNIX mode programs use the
4729 * the POSIX exit codes.
4731 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4732 STATUS_NATIVE &= STS$M_COND_ID;
4733 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4737 /* Traditionally Perl on VMS always expects a Fatal Error. */
4738 if (vaxc$errno & 1) {
4740 /* So force success status to failure */
4741 if (STATUS_NATIVE & 1)
4746 STATUS_UNIX = EINTR; /* In case something cares */
4751 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4753 /* Encode the severity code */
4754 severity = STATUS_NATIVE & STS$M_SEVERITY;
4755 STATUS_UNIX = (severity ? severity : 1) << 8;
4757 /* Perl expects this to be a fatal error */
4758 if (severity != STS$K_SEVERE)
4767 STATUS_UNIX_SET(errno);
4769 exitstatus = STATUS_UNIX >> 8;
4770 if (exitstatus & 255)
4771 STATUS_UNIX_SET(exitstatus);
4773 STATUS_UNIX_SET(255);
4780 S_my_exit_jump(pTHX)
4785 SvREFCNT_dec(PL_e_script);
4789 POPSTACK_TO(PL_mainstack);
4797 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4800 const char * const p = SvPVX_const(PL_e_script);
4801 const char *nl = strchr(p, '\n');
4803 PERL_UNUSED_ARG(idx);
4804 PERL_UNUSED_ARG(maxlen);
4806 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4808 filter_del(read_e_script);
4811 sv_catpvn(buf_sv, p, nl-p);
4812 sv_chop(PL_e_script, nl);
4818 * c-indentation-style: bsd
4820 * indent-tabs-mode: t
4823 * ex: set ts=8 sts=4 sw=4 noet: