3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * A ship then new they built for him
13 * of mithril and of elven-glass
14 * --from Bilbo's song of EƤrendil
16 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
19 /* This file contains the top-level functions that are used to create, use
20 * and destroy a perl interpreter, plus the functions used by XS code to
21 * call back into perl. Note that it does not contain the actual main()
22 * function of the interpreter; that can be found in perlmain.c
26 #define PERL_IN_PERL_C
28 #include "patchlevel.h" /* for local_patches */
32 char *nw_get_sitelib(const char *pl);
35 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
40 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
42 # include <sys/wait.h>
50 char control[CMSG_SPACE(sizeof(int))];
67 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
68 char *getenv (char *); /* Usually in <stdlib.h> */
71 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
73 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
74 /* Drop everything. Heck, don't even try to call it */
75 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
77 /* Drop almost everything */
78 # define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
81 #define CALL_BODY_EVAL(myop) \
82 if (PL_op == (myop)) \
83 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); \
87 #define CALL_BODY_SUB(myop) \
88 if (PL_op == (myop)) \
89 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
93 #define CALL_LIST_BODY(cv) \
94 PUSHMARK(PL_stack_sp); \
95 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
98 S_init_tls_and_interp(PerlInterpreter *my_perl)
102 PERL_SET_INTERP(my_perl);
103 #if defined(USE_ITHREADS)
106 PERL_SET_THX(my_perl);
109 MUTEX_INIT(&PL_dollarzero_mutex);
111 #ifdef PERL_IMPLICIT_CONTEXT
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);
353 if (!PL_mmap_page_size) {
354 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
356 SETERRNO(0, SS_NORMAL);
358 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
360 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
362 if ((long) PL_mmap_page_size < 0) {
364 SV * const error = ERRSV;
365 SvUPGRADE(error, SVt_PV);
366 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
369 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
373 # ifdef HAS_GETPAGESIZE
374 PL_mmap_page_size = getpagesize();
376 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
377 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
381 if (PL_mmap_page_size <= 0)
382 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
383 (IV) PL_mmap_page_size);
385 #endif /* HAS_MMAP */
387 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
388 PL_timesbase.tms_utime = 0;
389 PL_timesbase.tms_stime = 0;
390 PL_timesbase.tms_cutime = 0;
391 PL_timesbase.tms_cstime = 0;
394 PL_registered_mros = newHV();
395 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
396 HvMAX(PL_registered_mros) = 0;
402 =for apidoc nothreadhook
404 Stub that provides thread hook for perl_destruct when there are
411 Perl_nothreadhook(pTHX)
417 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
419 Perl_dump_sv_child(pTHX_ SV *sv)
422 const int sock = PL_dumper_fd;
423 const int debug_fd = PerlIO_fileno(Perl_debug_log);
424 union control_un control;
427 struct cmsghdr *cmptr;
429 unsigned char buffer[256];
431 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
433 if(sock == -1 || debug_fd == -1)
436 PerlIO_flush(Perl_debug_log);
438 /* All these shenanigans are to pass a file descriptor over to our child for
439 it to dump out to. We can't let it hold open the file descriptor when it
440 forks, as the file descriptor it will dump to can turn out to be one end
441 of pipe that some other process will wait on for EOF. (So as it would
442 be open, the wait would be forever.) */
444 msg.msg_control = control.control;
445 msg.msg_controllen = sizeof(control.control);
446 /* We're a connected socket so we don't need a destination */
452 cmptr = CMSG_FIRSTHDR(&msg);
453 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
454 cmptr->cmsg_level = SOL_SOCKET;
455 cmptr->cmsg_type = SCM_RIGHTS;
456 *((int *)CMSG_DATA(cmptr)) = 1;
458 vec[0].iov_base = (void*)&sv;
459 vec[0].iov_len = sizeof(sv);
460 got = sendmsg(sock, &msg, 0);
463 perror("Debug leaking scalars parent sendmsg failed");
466 if(got < sizeof(sv)) {
467 perror("Debug leaking scalars parent short sendmsg");
471 /* Return protocol is
473 unsigned char: length of location string (0 for empty)
474 unsigned char*: string (not terminated)
476 vec[0].iov_base = (void*)&returned_errno;
477 vec[0].iov_len = sizeof(returned_errno);
478 vec[1].iov_base = buffer;
481 got = readv(sock, vec, 2);
484 perror("Debug leaking scalars parent read failed");
485 PerlIO_flush(PerlIO_stderr());
488 if(got < sizeof(returned_errno) + 1) {
489 perror("Debug leaking scalars parent short read");
490 PerlIO_flush(PerlIO_stderr());
495 got = read(sock, buffer + 1, *buffer);
497 perror("Debug leaking scalars parent read 2 failed");
498 PerlIO_flush(PerlIO_stderr());
503 perror("Debug leaking scalars parent short read 2");
504 PerlIO_flush(PerlIO_stderr());
509 if (returned_errno || *buffer) {
510 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
511 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
512 returned_errno, strerror(returned_errno));
518 =for apidoc perl_destruct
520 Shuts down a Perl interpreter. See L<perlembed>.
529 VOL signed char destruct_level; /* see possible values in intrpvar.h */
531 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
535 PERL_ARGS_ASSERT_PERL_DESTRUCT;
537 PERL_UNUSED_ARG(my_perl);
540 /* wait for all pseudo-forked children to finish */
541 PERL_WAIT_FOR_CHILDREN;
543 destruct_level = PL_perl_destruct_level;
546 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
548 const int i = atoi(s);
549 if (destruct_level < i)
555 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
561 if (PL_endav && !PL_minus_c)
562 call_list(PL_scopestack_ix, PL_endav);
568 /* Need to flush since END blocks can produce output */
571 if (CALL_FPTR(PL_threadhook)(aTHX)) {
572 /* Threads hook has vetoed further cleanup */
573 PL_veto_cleanup = TRUE;
577 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
578 if (destruct_level != 0) {
579 /* Fork here to create a child. Our child's job is to preserve the
580 state of scalars prior to destruction, so that we can instruct it
581 to dump any scalars that we later find have leaked.
582 There's no subtlety in this code - it assumes POSIX, and it doesn't
586 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
587 perror("Debug leaking scalars socketpair failed");
593 perror("Debug leaking scalars fork failed");
597 /* We are the child */
598 const int sock = fd[1];
599 const int debug_fd = PerlIO_fileno(Perl_debug_log);
602 /* Our success message is an integer 0, and a char 0 */
603 static const char success[sizeof(int) + 1] = {0};
607 /* We need to close all other file descriptors otherwise we end up
608 with interesting hangs, where the parent closes its end of a
609 pipe, and sits waiting for (another) child to terminate. Only
610 that child never terminates, because it never gets EOF, because
611 we also have the far end of the pipe open. We even need to
612 close the debugging fd, because sometimes it happens to be one
613 end of a pipe, and a process is waiting on the other end for
614 EOF. Normally it would be closed at some point earlier in
615 destruction, but if we happen to cause the pipe to remain open,
616 EOF never occurs, and we get an infinite hang. Hence all the
617 games to pass in a file descriptor if it's actually needed. */
619 f = sysconf(_SC_OPEN_MAX);
621 where = "sysconf failed";
632 union control_un control;
635 struct cmsghdr *cmptr;
639 msg.msg_control = control.control;
640 msg.msg_controllen = sizeof(control.control);
641 /* We're a connected socket so we don't need a source */
645 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
647 vec[0].iov_base = (void*)⌖
648 vec[0].iov_len = sizeof(target);
650 got = recvmsg(sock, &msg, 0);
655 where = "recv failed";
658 if(got < sizeof(target)) {
659 where = "short recv";
663 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
667 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
668 where = "wrong cmsg_len";
671 if(cmptr->cmsg_level != SOL_SOCKET) {
672 where = "wrong cmsg_level";
675 if(cmptr->cmsg_type != SCM_RIGHTS) {
676 where = "wrong cmsg_type";
680 got_fd = *(int*)CMSG_DATA(cmptr);
681 /* For our last little bit of trickery, put the file descriptor
682 back into Perl_debug_log, as if we never actually closed it
684 if(got_fd != debug_fd) {
685 if (dup2(got_fd, debug_fd) == -1) {
692 PerlIO_flush(Perl_debug_log);
694 got = write(sock, &success, sizeof(success));
697 where = "write failed";
700 if(got < sizeof(success)) {
701 where = "short write";
708 int send_errno = errno;
709 unsigned char length = (unsigned char) strlen(where);
710 struct iovec failure[3] = {
711 {(void*)&send_errno, sizeof(send_errno)},
713 {(void*)where, length}
715 int got = writev(sock, failure, 3);
716 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
717 in the parent if we try to read from the socketpair after the
718 child has exited, even if there was data to read.
719 So sleep a bit to give the parent a fighting chance of
722 _exit((got == -1) ? errno : 0);
726 PL_dumper_fd = fd[0];
731 /* We must account for everything. */
733 /* Destroy the main CV and syntax tree */
734 /* Do this now, because destroying ops can cause new SVs to be generated
735 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
736 PL_curcop to point to a valid op from which the filename structure
738 PL_curcop = &PL_compiling;
740 /* ensure comppad/curpad to refer to main's pad */
741 if (CvPADLIST(PL_main_cv)) {
742 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
744 op_free(PL_main_root);
747 PL_main_start = NULL;
748 SvREFCNT_dec(PL_main_cv);
752 /* Tell PerlIO we are about to tear things apart in case
753 we have layers which are using resources that should
757 PerlIO_destruct(aTHX);
759 if (PL_sv_objcount) {
761 * Try to destruct global references. We do this first so that the
762 * destructors and destructees still exist. Some sv's might remain.
763 * Non-referenced objects are on their own.
767 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
768 PL_defoutgv = NULL; /* may have been freed */
771 /* unhook hooks which will soon be, or use, destroyed data */
772 SvREFCNT_dec(PL_warnhook);
774 SvREFCNT_dec(PL_diehook);
777 /* call exit list functions */
778 while (PL_exitlistlen-- > 0)
779 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
781 Safefree(PL_exitlist);
786 SvREFCNT_dec(PL_registered_mros);
788 /* jettison our possibly duplicated environment */
789 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
790 * so we certainly shouldn't free it here
793 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
794 if (environ != PL_origenviron && !PL_use_safe_putenv
796 /* only main thread can free environ[0] contents */
797 && PL_curinterp == aTHX
803 for (i = 0; environ[i]; i++)
804 safesysfree(environ[i]);
806 /* Must use safesysfree() when working with environ. */
807 safesysfree(environ);
809 environ = PL_origenviron;
812 #endif /* !PERL_MICRO */
814 if (destruct_level == 0) {
816 DEBUG_P(debprofdump());
818 #if defined(PERLIO_LAYERS)
819 /* No more IO - including error messages ! */
820 PerlIO_cleanup(aTHX);
823 CopFILE_free(&PL_compiling);
824 CopSTASH_free(&PL_compiling);
826 /* The exit() function will do everything that needs doing. */
830 /* reset so print() ends up where we expect */
834 /* the syntax tree is shared between clones
835 * so op_free(PL_main_root) only ReREFCNT_dec's
836 * REGEXPs in the parent interpreter
837 * we need to manually ReREFCNT_dec for the clones
839 SvREFCNT_dec(PL_regex_padav);
840 PL_regex_padav = NULL;
844 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
845 PL_stashcache = NULL;
847 /* loosen bonds of global variables */
849 /* XXX can PL_parser still be non-null here? */
850 if(PL_parser && PL_parser->rsfp) {
851 (void)PerlIO_close(PL_parser->rsfp);
852 PL_parser->rsfp = NULL;
856 Safefree(PL_splitstr);
866 PL_doswitches = FALSE;
867 PL_dowarn = G_WARN_OFF;
868 PL_doextract = FALSE;
869 PL_sawampersand = FALSE; /* must save all match strings */
872 Safefree(PL_inplace);
874 SvREFCNT_dec(PL_patchlevel);
877 SvREFCNT_dec(PL_e_script);
883 /* magical thingies */
885 SvREFCNT_dec(PL_ofsgv); /* *, */
888 SvREFCNT_dec(PL_ors_sv); /* $\ */
891 SvREFCNT_dec(PL_rs); /* $/ */
894 Safefree(PL_osname); /* $^O */
897 SvREFCNT_dec(PL_statname);
901 /* defgv, aka *_ should be taken care of elsewhere */
903 /* clean up after study() */
904 SvREFCNT_dec(PL_lastscream);
905 PL_lastscream = NULL;
906 Safefree(PL_screamfirst);
908 Safefree(PL_screamnext);
912 Safefree(PL_efloatbuf);
916 /* startup and shutdown function lists */
917 SvREFCNT_dec(PL_beginav);
918 SvREFCNT_dec(PL_beginav_save);
919 SvREFCNT_dec(PL_endav);
920 SvREFCNT_dec(PL_checkav);
921 SvREFCNT_dec(PL_checkav_save);
922 SvREFCNT_dec(PL_unitcheckav);
923 SvREFCNT_dec(PL_unitcheckav_save);
924 SvREFCNT_dec(PL_initav);
926 PL_beginav_save = NULL;
929 PL_checkav_save = NULL;
930 PL_unitcheckav = NULL;
931 PL_unitcheckav_save = NULL;
934 /* shortcuts just get cleared */
943 PL_last_in_gv = NULL;
955 SvREFCNT_dec(PL_argvout_stack);
956 PL_argvout_stack = NULL;
958 SvREFCNT_dec(PL_modglobal);
960 SvREFCNT_dec(PL_preambleav);
961 PL_preambleav = NULL;
962 SvREFCNT_dec(PL_subname);
964 #ifdef PERL_USES_PL_PIDSTATUS
965 SvREFCNT_dec(PL_pidstatus);
968 SvREFCNT_dec(PL_toptarget);
970 SvREFCNT_dec(PL_bodytarget);
971 PL_bodytarget = NULL;
972 PL_formtarget = NULL;
974 /* free locale stuff */
975 #ifdef USE_LOCALE_COLLATE
976 Safefree(PL_collation_name);
977 PL_collation_name = NULL;
980 #ifdef USE_LOCALE_NUMERIC
981 Safefree(PL_numeric_name);
982 PL_numeric_name = NULL;
983 SvREFCNT_dec(PL_numeric_radix_sv);
984 PL_numeric_radix_sv = NULL;
987 /* clear utf8 character classes */
988 SvREFCNT_dec(PL_utf8_alnum);
989 SvREFCNT_dec(PL_utf8_alnumc);
990 SvREFCNT_dec(PL_utf8_ascii);
991 SvREFCNT_dec(PL_utf8_alpha);
992 SvREFCNT_dec(PL_utf8_space);
993 SvREFCNT_dec(PL_utf8_cntrl);
994 SvREFCNT_dec(PL_utf8_graph);
995 SvREFCNT_dec(PL_utf8_digit);
996 SvREFCNT_dec(PL_utf8_upper);
997 SvREFCNT_dec(PL_utf8_lower);
998 SvREFCNT_dec(PL_utf8_print);
999 SvREFCNT_dec(PL_utf8_punct);
1000 SvREFCNT_dec(PL_utf8_xdigit);
1001 SvREFCNT_dec(PL_utf8_mark);
1002 SvREFCNT_dec(PL_utf8_toupper);
1003 SvREFCNT_dec(PL_utf8_totitle);
1004 SvREFCNT_dec(PL_utf8_tolower);
1005 SvREFCNT_dec(PL_utf8_tofold);
1006 SvREFCNT_dec(PL_utf8_idstart);
1007 SvREFCNT_dec(PL_utf8_idcont);
1008 PL_utf8_alnum = NULL;
1009 PL_utf8_alnumc = NULL;
1010 PL_utf8_ascii = NULL;
1011 PL_utf8_alpha = NULL;
1012 PL_utf8_space = NULL;
1013 PL_utf8_cntrl = NULL;
1014 PL_utf8_graph = NULL;
1015 PL_utf8_digit = NULL;
1016 PL_utf8_upper = NULL;
1017 PL_utf8_lower = NULL;
1018 PL_utf8_print = NULL;
1019 PL_utf8_punct = NULL;
1020 PL_utf8_xdigit = NULL;
1021 PL_utf8_mark = NULL;
1022 PL_utf8_toupper = NULL;
1023 PL_utf8_totitle = NULL;
1024 PL_utf8_tolower = NULL;
1025 PL_utf8_tofold = NULL;
1026 PL_utf8_idstart = NULL;
1027 PL_utf8_idcont = NULL;
1029 if (!specialWARN(PL_compiling.cop_warnings))
1030 PerlMemShared_free(PL_compiling.cop_warnings);
1031 PL_compiling.cop_warnings = NULL;
1032 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1033 PL_compiling.cop_hints_hash = NULL;
1034 CopFILE_free(&PL_compiling);
1035 CopSTASH_free(&PL_compiling);
1037 /* Prepare to destruct main symbol table. */
1042 SvREFCNT_dec(PL_curstname);
1043 PL_curstname = NULL;
1045 /* clear queued errors */
1046 SvREFCNT_dec(PL_errors);
1049 SvREFCNT_dec(PL_isarev);
1052 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
1053 if (PL_scopestack_ix != 0)
1054 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1055 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1056 (long)PL_scopestack_ix);
1057 if (PL_savestack_ix != 0)
1058 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1059 "Unbalanced saves: %ld more saves than restores\n",
1060 (long)PL_savestack_ix);
1061 if (PL_tmps_floor != -1)
1062 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1063 (long)PL_tmps_floor + 1);
1064 if (cxstack_ix != -1)
1065 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1066 (long)cxstack_ix + 1);
1069 /* Now absolutely destruct everything, somehow or other, loops or no. */
1071 /* the 2 is for PL_fdpid and PL_strtab */
1072 while (sv_clean_all() > 2)
1075 AvREAL_off(PL_fdpid); /* no surviving entries */
1076 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1079 #ifdef HAVE_INTERP_INTERN
1083 /* Destruct the global string table. */
1085 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1086 * so that sv_free() won't fail on them.
1087 * Now that the global string table is using a single hunk of memory
1088 * for both HE and HEK, we either need to explicitly unshare it the
1089 * correct way, or actually free things here.
1092 const I32 max = HvMAX(PL_strtab);
1093 HE * const * const array = HvARRAY(PL_strtab);
1094 HE *hent = array[0];
1097 if (hent && ckWARN_d(WARN_INTERNAL)) {
1098 HE * const next = HeNEXT(hent);
1099 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1100 "Unbalanced string table refcount: (%ld) for \"%s\"",
1101 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1108 hent = array[riter];
1113 HvARRAY(PL_strtab) = 0;
1114 HvTOTALKEYS(PL_strtab) = 0;
1115 HvFILL(PL_strtab) = 0;
1117 SvREFCNT_dec(PL_strtab);
1120 /* free the pointer tables used for cloning */
1121 ptr_table_free(PL_ptr_table);
1122 PL_ptr_table = (PTR_TBL_t*)NULL;
1125 /* free special SVs */
1127 SvREFCNT(&PL_sv_yes) = 0;
1128 sv_clear(&PL_sv_yes);
1129 SvANY(&PL_sv_yes) = NULL;
1130 SvFLAGS(&PL_sv_yes) = 0;
1132 SvREFCNT(&PL_sv_no) = 0;
1133 sv_clear(&PL_sv_no);
1134 SvANY(&PL_sv_no) = NULL;
1135 SvFLAGS(&PL_sv_no) = 0;
1139 for (i=0; i<=2; i++) {
1140 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1141 sv_clear(PERL_DEBUG_PAD(i));
1142 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1143 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1147 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1148 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1150 #ifdef DEBUG_LEAKING_SCALARS
1151 if (PL_sv_count != 0) {
1156 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1157 svend = &sva[SvREFCNT(sva)];
1158 for (sv = sva + 1; sv < svend; ++sv) {
1159 if (SvTYPE(sv) != SVTYPEMASK) {
1160 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1162 " refcnt=%"UVuf pTHX__FORMAT "\n"
1163 "\tallocated at %s:%d %s %s%s\n",
1164 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1166 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1168 sv->sv_debug_inpad ? "for" : "by",
1169 sv->sv_debug_optype ?
1170 PL_op_name[sv->sv_debug_optype]: "(none)",
1171 sv->sv_debug_cloned ? " (cloned)" : ""
1173 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1174 Perl_dump_sv_child(aTHX_ sv);
1180 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1184 /* Wait for up to 4 seconds for child to terminate.
1185 This seems to be the least effort way of timing out on reaping
1187 struct timeval waitfor = {4, 0};
1188 int sock = PL_dumper_fd;
1192 FD_SET(sock, &rset);
1193 select(sock + 1, &rset, NULL, NULL, &waitfor);
1194 waitpid(child, &status, WNOHANG);
1199 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1205 #ifdef PERL_DEBUG_READONLY_OPS
1211 #if defined(PERLIO_LAYERS)
1212 /* No more IO - including error messages ! */
1213 PerlIO_cleanup(aTHX);
1216 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1217 as currently layers use it rather than NULL as a marker
1218 for no arg - and will try and SvREFCNT_dec it.
1220 SvREFCNT(&PL_sv_undef) = 0;
1221 SvREADONLY_off(&PL_sv_undef);
1223 Safefree(PL_origfilename);
1224 PL_origfilename = NULL;
1225 Safefree(PL_reg_start_tmp);
1226 PL_reg_start_tmp = (char**)NULL;
1227 PL_reg_start_tmpl = 0;
1228 Safefree(PL_reg_curpm);
1229 Safefree(PL_reg_poscache);
1230 free_tied_hv_pool();
1231 Safefree(PL_op_mask);
1232 Safefree(PL_psig_ptr);
1233 PL_psig_ptr = (SV**)NULL;
1234 Safefree(PL_psig_name);
1235 PL_psig_name = (SV**)NULL;
1236 Safefree(PL_bitcount);
1238 Safefree(PL_psig_pend);
1239 PL_psig_pend = (int*)NULL;
1242 PL_tainting = FALSE;
1243 PL_taint_warn = FALSE;
1244 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1247 DEBUG_P(debprofdump());
1249 #ifdef USE_REENTRANT_API
1250 Perl_reentrant_free(aTHX);
1255 while (PL_regmatch_slab) {
1256 regmatch_slab *s = PL_regmatch_slab;
1257 PL_regmatch_slab = PL_regmatch_slab->next;
1261 /* As the absolutely last thing, free the non-arena SV for mess() */
1264 /* we know that type == SVt_PVMG */
1266 /* it could have accumulated taint magic */
1269 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1270 moremagic = mg->mg_moremagic;
1271 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1273 Safefree(mg->mg_ptr);
1277 /* we know that type >= SVt_PV */
1278 SvPV_free(PL_mess_sv);
1279 Safefree(SvANY(PL_mess_sv));
1280 Safefree(PL_mess_sv);
1287 =for apidoc perl_free
1289 Releases a Perl interpreter. See L<perlembed>.
1299 PERL_ARGS_ASSERT_PERL_FREE;
1301 if (PL_veto_cleanup)
1304 #ifdef PERL_TRACK_MEMPOOL
1307 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1308 * value as we're probably hunting memory leaks then
1310 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1311 if (!s || atoi(s) == 0) {
1312 const U32 old_debug = PL_debug;
1313 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1314 thread at thread exit. */
1316 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1317 "free this thread's memory\n");
1318 PL_debug &= ~ DEBUG_m_FLAG;
1320 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1321 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1322 PL_debug = old_debug;
1327 #if defined(WIN32) || defined(NETWARE)
1328 # if defined(PERL_IMPLICIT_SYS)
1331 void *host = nw_internal_host;
1333 void *host = w32_internal_host;
1335 PerlMem_free(aTHXx);
1337 nw_delete_internal_host(host);
1339 win32_delete_internal_host(host);
1343 PerlMem_free(aTHXx);
1346 PerlMem_free(aTHXx);
1350 #if defined(USE_ITHREADS)
1351 /* provide destructors to clean up the thread key when libperl is unloaded */
1352 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1354 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1355 #pragma fini "perl_fini"
1356 #elif defined(__sun) && !defined(__GNUC__)
1357 #pragma fini (perl_fini)
1361 #if defined(__GNUC__)
1362 __attribute__((destructor))
1367 if (PL_curinterp && !PL_veto_cleanup)
1372 #endif /* THREADS */
1375 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1378 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1379 PL_exitlist[PL_exitlistlen].fn = fn;
1380 PL_exitlist[PL_exitlistlen].ptr = ptr;
1384 #ifdef HAS_PROCSELFEXE
1385 /* This is a function so that we don't hold on to MAXPATHLEN
1386 bytes of stack longer than necessary
1389 S_procself_val(pTHX_ SV *sv, const char *arg0)
1391 char buf[MAXPATHLEN];
1392 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1394 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1395 includes a spurious NUL which will cause $^X to fail in system
1396 or backticks (this will prevent extensions from being built and
1397 many tests from working). readlink is not meant to add a NUL.
1398 Normal readlink works fine.
1400 if (len > 0 && buf[len-1] == '\0') {
1404 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1405 returning the text "unknown" from the readlink rather than the path
1406 to the executable (or returning an error from the readlink). Any valid
1407 path has a '/' in it somewhere, so use that to validate the result.
1408 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1410 if (len > 0 && memchr(buf, '/', len)) {
1411 sv_setpvn(sv,buf,len);
1417 #endif /* HAS_PROCSELFEXE */
1420 S_set_caret_X(pTHX) {
1422 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1424 #ifdef HAS_PROCSELFEXE
1425 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1428 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
1430 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
1437 =for apidoc perl_parse
1439 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1445 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1452 PERL_ARGS_ASSERT_PERL_PARSE;
1453 #ifndef MULTIPLICITY
1454 PERL_UNUSED_ARG(my_perl);
1457 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1458 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1459 * This MUST be done before any hash stores or fetches take place.
1460 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1461 * yourself, it is your responsibility to provide a good random seed!
1462 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1463 if (!PL_rehash_seed_set)
1464 PL_rehash_seed = get_hash_seed();
1466 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1468 if (s && (atoi(s) == 1))
1469 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1471 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1476 if (PL_origalen != 0) {
1477 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1480 /* Set PL_origalen be the sum of the contiguous argv[]
1481 * elements plus the size of the env in case that it is
1482 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1483 * as the maximum modifiable length of $0. In the worst case
1484 * the area we are able to modify is limited to the size of
1485 * the original argv[0]. (See below for 'contiguous', though.)
1487 const char *s = NULL;
1490 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1491 /* Do the mask check only if the args seem like aligned. */
1493 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1495 /* See if all the arguments are contiguous in memory. Note
1496 * that 'contiguous' is a loose term because some platforms
1497 * align the argv[] and the envp[]. If the arguments look
1498 * like non-aligned, assume that they are 'strictly' or
1499 * 'traditionally' contiguous. If the arguments look like
1500 * aligned, we just check that they are within aligned
1501 * PTRSIZE bytes. As long as no system has something bizarre
1502 * like the argv[] interleaved with some other data, we are
1503 * fine. (Did I just evoke Murphy's Law?) --jhi */
1504 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1506 for (i = 1; i < PL_origargc; i++) {
1507 if ((PL_origargv[i] == s + 1
1509 || PL_origargv[i] == s + 2
1514 (PL_origargv[i] > s &&
1516 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1527 #ifndef PERL_USE_SAFE_PUTENV
1528 /* Can we grab env area too to be used as the area for $0? */
1529 if (s && PL_origenviron && !PL_use_safe_putenv) {
1530 if ((PL_origenviron[0] == s + 1)
1533 (PL_origenviron[0] > s &&
1534 PL_origenviron[0] <=
1535 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1538 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1539 s = PL_origenviron[0];
1542 my_setenv("NoNe SuCh", NULL);
1543 /* Force copy of environment. */
1544 for (i = 1; PL_origenviron[i]; i++) {
1545 if (PL_origenviron[i] == s + 1
1548 (PL_origenviron[i] > s &&
1549 PL_origenviron[i] <=
1550 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1553 s = PL_origenviron[i];
1561 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1563 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1568 /* Come here if running an undumped a.out. */
1570 PL_origfilename = savepv(argv[0]);
1571 PL_do_undump = FALSE;
1572 cxstack_ix = -1; /* start label stack again */
1574 assert (!PL_tainted);
1576 S_set_caret_X(aTHX);
1578 init_postdump_symbols(argc,argv,env);
1583 op_free(PL_main_root);
1584 PL_main_root = NULL;
1586 PL_main_start = NULL;
1587 SvREFCNT_dec(PL_main_cv);
1591 oldscope = PL_scopestack_ix;
1592 PL_dowarn = G_WARN_OFF;
1597 parse_body(env,xsinit);
1599 call_list(oldscope, PL_unitcheckav);
1601 call_list(oldscope, PL_checkav);
1608 /* my_exit() was called */
1609 while (PL_scopestack_ix > oldscope)
1612 PL_curstash = PL_defstash;
1614 call_list(oldscope, PL_unitcheckav);
1616 call_list(oldscope, PL_checkav);
1620 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1628 #define INCPUSH_ADD_SUB_DIRS 0x01
1629 #define INCPUSH_ADD_OLD_VERS 0x02
1630 #define INCPUSH_NOT_BASEDIR 0x04
1631 #define INCPUSH_CAN_RELOCATE 0x08
1632 #define INCPUSH_UNSHIFT 0x10
1635 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1639 int argc = PL_origargc;
1640 char **argv = PL_origargv;
1641 const char *scriptname = NULL;
1642 VOL bool dosearch = FALSE;
1645 const char *cddir = NULL;
1646 #ifdef USE_SITECUSTOMIZE
1647 bool minus_f = FALSE;
1649 SV *linestr_sv = newSV_type(SVt_PVIV);
1650 bool add_read_e_script = FALSE;
1652 SvGROW(linestr_sv, 80);
1653 sv_setpvs(linestr_sv,"");
1655 sv = newSVpvs(""); /* first used for -I flags */
1661 for (argc--,argv++; argc > 0; argc--,argv++) {
1662 if (argv[0][0] != '-' || !argv[0][1])
1668 #ifndef PERL_STRICT_CR
1692 if ((s = moreswitches(s)))
1697 CHECK_MALLOC_TOO_LATE_FOR('t');
1698 if( !PL_tainting ) {
1699 PL_taint_warn = TRUE;
1705 CHECK_MALLOC_TOO_LATE_FOR('T');
1707 PL_taint_warn = FALSE;
1715 #ifdef MACOS_TRADITIONAL
1716 /* ignore -e for Dev:Pseudo argument */
1717 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1720 forbid_setid('e', FALSE);
1722 PL_e_script = newSVpvs("");
1723 add_read_e_script = TRUE;
1726 sv_catpv(PL_e_script, s);
1728 sv_catpv(PL_e_script, argv[1]);
1732 Perl_croak(aTHX_ "No code specified for -%c", c);
1733 sv_catpvs(PL_e_script, "\n");
1737 #ifdef USE_SITECUSTOMIZE
1743 case 'I': /* -I handled both here and in moreswitches() */
1744 forbid_setid('I', FALSE);
1745 if (!*++s && (s=argv[1]) != NULL) {
1749 STRLEN len = strlen(s);
1750 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1751 sv_catpvs(sv, "-I");
1752 sv_catpvn(sv, s, len);
1756 Perl_croak(aTHX_ "No directory specified for -I");
1759 forbid_setid('S', FALSE);
1767 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
1769 /* Can't do newSVpvs() as that would involve pre-processor
1770 condititionals inside a macro expansion. */
1771 opts_prog = Perl_newSVpv(aTHX_ "$_ = join ' ', sort qw("
1778 # ifdef PERL_DONT_CREATE_GVSV
1779 " PERL_DONT_CREATE_GVSV"
1781 # ifdef PERL_MALLOC_WRAP
1784 # ifdef PERL_MEM_LOG
1787 # ifdef PERL_MEM_LOG_ENV
1790 # ifdef PERL_MEM_LOG_ENV_FD
1791 " PERL_MEM_LOG_ENV_FD"
1793 # ifdef PERL_MEM_LOG_STDERR
1794 " PERL_MEM_LOG_STDERR"
1796 # ifdef PERL_MEM_LOG_TIMESTAMP
1797 " PERL_MEM_LOG_TIMESTAMP"
1799 # ifdef PERL_USE_DEVEL
1802 # ifdef PERL_USE_SAFE_PUTENV
1803 " PERL_USE_SAFE_PUTENV"
1805 # ifdef USE_SITECUSTOMIZE
1806 " USE_SITECUSTOMIZE"
1808 # ifdef USE_FAST_STDIO
1813 sv_catpv(opts_prog, PL_bincompat_options);
1814 /* Terminate the qw(, and then wrap at 76 columns. */
1815 sv_catpvs(opts_prog, "); s/(?=.{53})(.{1,53}) /$1\\n /mg;print Config::myconfig(),");
1817 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n");
1819 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n");
1821 sv_catpvs(opts_prog," Compile-time options: $_\\n\",");
1823 #if defined(LOCAL_PATCH_COUNT)
1824 if (LOCAL_PATCH_COUNT > 0) {
1826 sv_catpvs(opts_prog,
1827 "\" Locally applied patches:\\n\",");
1828 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1829 if (PL_localpatches[i])
1830 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1831 0, PL_localpatches[i], 0);
1835 Perl_sv_catpvf(aTHX_ opts_prog,
1836 "\" Built under %s\\n",OSNAME);
1839 sv_catpvs(opts_prog,
1840 " Compiled at " __DATE__ " " __TIME__ "\\n\"");
1842 sv_catpvs(opts_prog, " Compiled on " __DATE__ "\\n\"");
1845 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
1846 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1847 "sort grep {/^PERL/} keys %ENV; ");
1849 sv_catpvs(opts_prog,
1850 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1852 sv_catpvs(opts_prog,
1853 "print \" \\%ENV:\\n @env\\n\" if @env;"
1854 "print \" \\@INC:\\n @INC\\n\";");
1858 opts_prog = Perl_newSVpvf(aTHX_
1859 "Config::config_vars(qw%c%s%c)",
1863 av_push(PL_preambleav, opts_prog);
1864 /* don't look for script or read stdin */
1865 scriptname = BIT_BUCKET;
1869 PL_doextract = TRUE;
1877 if (!*++s || isSPACE(*s)) {
1881 /* catch use of gnu style long options */
1882 if (strEQ(s, "version")) {
1886 if (strEQ(s, "help")) {
1893 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1904 #ifndef SECURE_INTERNAL_GETENV
1907 (s = PerlEnv_getenv("PERL5OPT")))
1911 if (*s == '-' && *(s+1) == 'T') {
1912 CHECK_MALLOC_TOO_LATE_FOR('T');
1914 PL_taint_warn = FALSE;
1917 char *popt_copy = NULL;
1930 if (!strchr("CDIMUdmtw", *s))
1931 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1935 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1936 s = popt_copy + (s - d);
1944 if( !PL_tainting ) {
1945 PL_taint_warn = TRUE;
1956 #ifdef USE_SITECUSTOMIZE
1958 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1959 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1964 scriptname = argv[0];
1967 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1969 else if (scriptname == NULL) {
1971 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1977 /* Set $^X early so that it can be used for relocatable paths in @INC */
1978 assert (!PL_tainted);
1980 S_set_caret_X(aTHX);
1983 init_perllib(INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
1986 bool suidscript = FALSE;
1988 open_script(scriptname, dosearch, &suidscript, &rsfp);
1990 validate_suid(validarg, scriptname, fdscript, suidscript,
1994 # if defined(SIGCHLD) || defined(SIGCLD)
1997 # define SIGCHLD SIGCLD
1999 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2000 if (sigstate == (Sighandler_t) SIG_IGN) {
2001 if (ckWARN(WARN_SIGNAL))
2002 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2003 "Can't ignore signal CHLD, forcing to default");
2004 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2011 #ifdef MACOS_TRADITIONAL
2012 || gMacPerl_AlwaysExtract
2016 /* This will croak if suidscript is true, as -x cannot be used with
2018 forbid_setid('x', suidscript);
2019 /* Hence you can't get here if suidscript is true */
2021 find_beginning(linestr_sv, rsfp);
2022 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2023 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2027 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2028 CvUNIQUE_on(PL_compcv);
2030 CvPADLIST(PL_compcv) = pad_new(0);
2032 PL_isarev = newHV();
2035 boot_core_UNIVERSAL();
2036 boot_core_xsutils();
2040 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2042 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2048 # ifdef HAS_SOCKS5_INIT
2049 socks5_init(argv[0]);
2055 init_predump_symbols();
2056 /* init_postdump_symbols not currently designed to be called */
2057 /* more than once (ENV isn't cleared first, for example) */
2058 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2060 init_postdump_symbols(argc,argv,env);
2062 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2063 * or explicitly in some platforms.
2064 * locale.c:Perl_init_i18nl10n() if the environment
2065 * look like the user wants to use UTF-8. */
2066 #if defined(__SYMBIAN32__)
2067 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2070 /* Requires init_predump_symbols(). */
2071 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2076 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2077 * and the default open disciplines. */
2078 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2079 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2081 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2082 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2083 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2085 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2086 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2087 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2089 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2090 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2091 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2093 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2094 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2097 sv_setpvs(sv, ":utf8\0:utf8");
2099 sv_setpvs(sv, ":utf8\0");
2102 sv_setpvs(sv, "\0:utf8");
2110 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2111 if (strEQ(s, "unsafe"))
2112 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2113 else if (strEQ(s, "safe"))
2114 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2116 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2123 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2127 PL_xmlfp = PerlIO_stdout();
2129 PL_xmlfp = PerlIO_open(s, "w");
2131 Perl_croak(aTHX_ "Can't open %s", s);
2133 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2139 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2140 PL_madskills = atoi(s);
2141 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2146 lex_start(linestr_sv, rsfp, TRUE);
2147 PL_subname = newSVpvs("main");
2149 if (add_read_e_script)
2150 filter_add(read_e_script, NULL);
2152 /* now parse the script */
2154 SETERRNO(0,SS_NORMAL);
2155 #ifdef MACOS_TRADITIONAL
2156 if (gMacPerl_SyntaxError = (yyparse() || PL_parser->error_count)) {
2158 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2160 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2161 MacPerl_MPWFileName(PL_origfilename));
2165 if (yyparse() || PL_parser->error_count) {
2167 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2169 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2174 CopLINE_set(PL_curcop, 0);
2175 PL_curstash = PL_defstash;
2177 SvREFCNT_dec(PL_e_script);
2185 SAVECOPFILE(PL_curcop);
2186 SAVECOPLINE(PL_curcop);
2187 gv_check(PL_defstash);
2196 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2197 dump_mstats("after compilation:");
2207 =for apidoc perl_run
2209 Tells a Perl interpreter to run. See L<perlembed>.
2222 PERL_ARGS_ASSERT_PERL_RUN;
2223 #ifndef MULTIPLICITY
2224 PERL_UNUSED_ARG(my_perl);
2227 oldscope = PL_scopestack_ix;
2235 cxstack_ix = -1; /* start context stack again */
2237 case 0: /* normal completion */
2241 case 2: /* my_exit() */
2242 while (PL_scopestack_ix > oldscope)
2245 PL_curstash = PL_defstash;
2246 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2247 PL_endav && !PL_minus_c)
2248 call_list(oldscope, PL_endav);
2250 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2251 dump_mstats("after execution: ");
2257 POPSTACK_TO(PL_mainstack);
2260 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2271 S_run_body(pTHX_ I32 oldscope)
2274 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2275 PL_sawampersand ? "Enabling" : "Omitting"));
2277 if (!PL_restartop) {
2281 exit(0); /* less likely to core dump than my_exit(0) */
2284 DEBUG_x(dump_all());
2287 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2291 #ifdef MACOS_TRADITIONAL
2292 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2293 (gMacPerl_ErrorFormat ? "# " : ""),
2294 MacPerl_MPWFileName(PL_origfilename));
2296 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2300 if (PERLDB_SINGLE && PL_DBsingle)
2301 sv_setiv(PL_DBsingle, 1);
2303 call_list(oldscope, PL_initav);
2304 #ifdef PERL_DEBUG_READONLY_OPS
2305 Perl_pending_Slabs_to_ro(aTHX);
2312 PL_op = PL_restartop;
2316 else if (PL_main_start) {
2317 CvDEPTH(PL_main_cv) = 1;
2318 PL_op = PL_main_start;
2326 =head1 SV Manipulation Functions
2328 =for apidoc p||get_sv
2330 Returns the SV of the specified Perl scalar. C<flags> are passed to
2331 C<gv_fetchpv>. If C<GV_ADD> is set and the
2332 Perl variable does not exist then it will be created. If C<flags> is zero
2333 and the variable does not exist then NULL is returned.
2339 Perl_get_sv(pTHX_ const char *name, I32 flags)
2343 PERL_ARGS_ASSERT_GET_SV;
2345 gv = gv_fetchpv(name, flags, SVt_PV);
2352 =head1 Array Manipulation Functions
2354 =for apidoc p||get_av
2356 Returns the AV of the specified Perl array. C<flags> are passed to
2357 C<gv_fetchpv>. If C<GV_ADD> is set and the
2358 Perl variable does not exist then it will be created. If C<flags> is zero
2359 and the variable does not exist then NULL is returned.
2365 Perl_get_av(pTHX_ const char *name, I32 flags)
2367 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2369 PERL_ARGS_ASSERT_GET_AV;
2379 =head1 Hash Manipulation Functions
2381 =for apidoc p||get_hv
2383 Returns the HV of the specified Perl hash. C<flags> are passed to
2384 C<gv_fetchpv>. If C<GV_ADD> is set and the
2385 Perl variable does not exist then it will be created. If C<flags> is zero
2386 and the variable does not exist then NULL is returned.
2392 Perl_get_hv(pTHX_ const char *name, I32 flags)
2394 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2396 PERL_ARGS_ASSERT_GET_HV;
2406 =head1 CV Manipulation Functions
2408 =for apidoc p||get_cvn_flags
2410 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2411 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2412 exist then it will be declared (which has the same effect as saying
2413 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2414 then NULL is returned.
2416 =for apidoc p||get_cv
2418 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2424 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2426 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2427 /* XXX this is probably not what they think they're getting.
2428 * It has the same effect as "sub name;", i.e. just a forward
2431 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2433 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2434 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
2435 return newSUB(start_subparse(FALSE, 0),
2436 newSVOP(OP_CONST, 0, sv),
2444 /* Nothing in core calls this now, but we can't replace it with a macro and
2445 move it to mathoms.c as a macro would evaluate name twice. */
2447 Perl_get_cv(pTHX_ const char *name, I32 flags)
2449 PERL_ARGS_ASSERT_GET_CV;
2451 return get_cvn_flags(name, strlen(name), flags);
2454 /* Be sure to refetch the stack pointer after calling these routines. */
2458 =head1 Callback Functions
2460 =for apidoc p||call_argv
2462 Performs a callback to the specified Perl sub. See L<perlcall>.
2468 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2470 /* See G_* flags in cop.h */
2471 /* null terminated arg list */
2476 PERL_ARGS_ASSERT_CALL_ARGV;
2481 mXPUSHs(newSVpv(*argv,0));
2486 return call_pv(sub_name, flags);
2490 =for apidoc p||call_pv
2492 Performs a callback to the specified Perl sub. See L<perlcall>.
2498 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2499 /* name of the subroutine */
2500 /* See G_* flags in cop.h */
2502 PERL_ARGS_ASSERT_CALL_PV;
2504 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2508 =for apidoc p||call_method
2510 Performs a callback to the specified Perl method. The blessed object must
2511 be on the stack. See L<perlcall>.
2517 Perl_call_method(pTHX_ const char *methname, I32 flags)
2518 /* name of the subroutine */
2519 /* See G_* flags in cop.h */
2521 PERL_ARGS_ASSERT_CALL_METHOD;
2523 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
2526 /* May be called with any of a CV, a GV, or an SV containing the name. */
2528 =for apidoc p||call_sv
2530 Performs a callback to the Perl sub whose name is in the SV. See
2537 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2538 /* See G_* flags in cop.h */
2541 LOGOP myop; /* fake syntax tree node */
2546 bool oldcatch = CATCH_GET;
2548 OP* const oldop = PL_op;
2551 PERL_ARGS_ASSERT_CALL_SV;
2553 if (flags & G_DISCARD) {
2557 if (!(flags & G_WANT)) {
2558 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2563 Zero(&myop, 1, LOGOP);
2564 myop.op_next = NULL;
2565 if (!(flags & G_NOARGS))
2566 myop.op_flags |= OPf_STACKED;
2567 myop.op_flags |= OP_GIMME_REVERSE(flags);
2571 EXTEND(PL_stack_sp, 1);
2572 *++PL_stack_sp = sv;
2574 oldscope = PL_scopestack_ix;
2576 if (PERLDB_SUB && PL_curstash != PL_debstash
2577 /* Handle first BEGIN of -d. */
2578 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2579 /* Try harder, since this may have been a sighandler, thus
2580 * curstash may be meaningless. */
2581 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2582 && !(flags & G_NODEBUG))
2583 PL_op->op_private |= OPpENTERSUB_DB;
2585 if (flags & G_METHOD) {
2586 Zero(&method_op, 1, UNOP);
2587 method_op.op_next = PL_op;
2588 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2589 method_op.op_type = OP_METHOD;
2590 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2591 myop.op_type = OP_ENTERSUB;
2592 PL_op = (OP*)&method_op;
2595 if (!(flags & G_EVAL)) {
2597 CALL_BODY_SUB((OP*)&myop);
2598 retval = PL_stack_sp - (PL_stack_base + oldmark);
2599 CATCH_SET(oldcatch);
2602 myop.op_other = (OP*)&myop;
2604 create_eval_scope(flags|G_FAKINGEVAL);
2612 CALL_BODY_SUB((OP*)&myop);
2613 retval = PL_stack_sp - (PL_stack_base + oldmark);
2614 if (!(flags & G_KEEPERR)) {
2622 /* my_exit() was called */
2623 PL_curstash = PL_defstash;
2626 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2627 Perl_croak(aTHX_ "Callback called exit");
2632 PL_op = PL_restartop;
2636 PL_stack_sp = PL_stack_base + oldmark;
2637 if ((flags & G_WANT) == G_ARRAY)
2641 *++PL_stack_sp = &PL_sv_undef;
2646 if (PL_scopestack_ix > oldscope)
2647 delete_eval_scope();
2651 if (flags & G_DISCARD) {
2652 PL_stack_sp = PL_stack_base + oldmark;
2661 /* Eval a string. The G_EVAL flag is always assumed. */
2664 =for apidoc p||eval_sv
2666 Tells Perl to C<eval> the string in the SV.
2672 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2674 /* See G_* flags in cop.h */
2678 UNOP myop; /* fake syntax tree node */
2679 VOL I32 oldmark = SP - PL_stack_base;
2682 OP* const oldop = PL_op;
2685 PERL_ARGS_ASSERT_EVAL_SV;
2687 if (flags & G_DISCARD) {
2694 Zero(PL_op, 1, UNOP);
2695 EXTEND(PL_stack_sp, 1);
2696 *++PL_stack_sp = sv;
2698 if (!(flags & G_NOARGS))
2699 myop.op_flags = OPf_STACKED;
2700 myop.op_next = NULL;
2701 myop.op_type = OP_ENTEREVAL;
2702 myop.op_flags |= OP_GIMME_REVERSE(flags);
2703 if (flags & G_KEEPERR)
2704 myop.op_flags |= OPf_SPECIAL;
2706 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2707 * before a PUSHEVAL, which corrupts the stack after a croak */
2708 TAINT_PROPER("eval_sv()");
2714 CALL_BODY_EVAL((OP*)&myop);
2715 retval = PL_stack_sp - (PL_stack_base + oldmark);
2716 if (!(flags & G_KEEPERR)) {
2724 /* my_exit() was called */
2725 PL_curstash = PL_defstash;
2728 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2729 Perl_croak(aTHX_ "Callback called exit");
2734 PL_op = PL_restartop;
2738 PL_stack_sp = PL_stack_base + oldmark;
2739 if ((flags & G_WANT) == G_ARRAY)
2743 *++PL_stack_sp = &PL_sv_undef;
2749 if (flags & G_DISCARD) {
2750 PL_stack_sp = PL_stack_base + oldmark;
2760 =for apidoc p||eval_pv
2762 Tells Perl to C<eval> the given string and return an SV* result.
2768 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2772 SV* sv = newSVpv(p, 0);
2774 PERL_ARGS_ASSERT_EVAL_PV;
2776 eval_sv(sv, G_SCALAR);
2783 if (croak_on_error && SvTRUE(ERRSV)) {
2784 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2790 /* Require a module. */
2793 =head1 Embedding Functions
2795 =for apidoc p||require_pv
2797 Tells Perl to C<require> the file named by the string argument. It is
2798 analogous to the Perl code C<eval "require '$file'">. It's even
2799 implemented that way; consider using load_module instead.
2804 Perl_require_pv(pTHX_ const char *pv)
2810 PERL_ARGS_ASSERT_REQUIRE_PV;
2812 PUSHSTACKi(PERLSI_REQUIRE);
2814 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2815 eval_sv(sv_2mortal(sv), G_DISCARD);
2821 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2823 /* This message really ought to be max 23 lines.
2824 * Removed -h because the user already knows that option. Others? */
2826 static const char * const usage_msg[] = {
2827 "-0[octal] specify record separator (\\0, if no argument)",
2828 "-a autosplit mode with -n or -p (splits $_ into @F)",
2829 "-C[number/list] enables the listed Unicode features",
2830 "-c check syntax only (runs BEGIN and CHECK blocks)",
2831 "-d[:debugger] run program under debugger",
2832 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2833 "-e program one line of program (several -e's allowed, omit programfile)",
2834 "-E program like -e, but enables all optional features",
2835 "-f don't do $sitelib/sitecustomize.pl at startup",
2836 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2837 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2838 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2839 "-l[octal] enable line ending processing, specifies line terminator",
2840 "-[mM][-]module execute \"use/no module...\" before executing program",
2841 "-n assume \"while (<>) { ... }\" loop around program",
2842 "-p assume loop like -n but print line also, like sed",
2843 "-s enable rudimentary parsing for switches after programfile",
2844 "-S look for programfile using PATH environment variable",
2845 "-t enable tainting warnings",
2846 "-T enable tainting checks",
2847 "-u dump core after parsing program",
2848 "-U allow unsafe operations",
2849 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2850 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2851 "-w enable many useful warnings (RECOMMENDED)",
2852 "-W enable all warnings",
2853 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2854 "-X disable all warnings",
2858 const char * const *p = usage_msg;
2860 PERL_ARGS_ASSERT_USAGE;
2862 PerlIO_printf(PerlIO_stdout(),
2863 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2866 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2869 /* convert a string of -D options (or digits) into an int.
2870 * sets *s to point to the char after the options */
2874 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2876 static const char * const usage_msgd[] = {
2877 " Debugging flag values: (see also -d)",
2878 " p Tokenizing and parsing (with v, displays parse stack)",
2879 " s Stack snapshots (with v, displays all stacks)",
2880 " l Context (loop) stack processing",
2881 " t Trace execution",
2882 " o Method and overloading resolution",
2883 " c String/numeric conversions",
2884 " P Print profiling info, source file input state",
2885 " m Memory and SV allocation",
2886 " f Format processing",
2887 " r Regular expression parsing and execution",
2888 " x Syntax tree dump",
2889 " u Tainting checks",
2890 " H Hash dump -- usurps values()",
2891 " X Scratchpad allocation",
2894 " R Include reference counts of dumped variables (eg when using -Ds)",
2895 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2896 " v Verbose: use in conjunction with other flags",
2898 " A Consistency checks on internal structures",
2899 " q quiet - currently only suppresses the 'EXECUTING' message",
2904 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2907 /* if adding extra options, remember to update DEBUG_MASK */
2908 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
2910 for (; isALNUM(**s); (*s)++) {
2911 const char * const d = strchr(debopts,**s);
2913 i |= 1 << (d - debopts);
2914 else if (ckWARN_d(WARN_DEBUGGING))
2915 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2916 "invalid option -D%c, use -D'' to see choices\n", **s);
2919 else if (isDIGIT(**s)) {
2921 for (; isALNUM(**s); (*s)++) ;
2923 else if (givehelp) {
2924 const char *const *p = usage_msgd;
2925 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2928 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2929 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2930 "-Dp not implemented on this platform\n");
2936 /* This routine handles any switches that can be given during run */
2939 Perl_moreswitches(pTHX_ const char *s)
2943 const char option = *s; /* used to remember option in -m/-M code */
2945 PERL_ARGS_ASSERT_MORESWITCHES;
2953 SvREFCNT_dec(PL_rs);
2954 if (s[1] == 'x' && s[2]) {
2955 const char *e = s+=2;
2961 flags = PERL_SCAN_SILENT_ILLDIGIT;
2962 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2963 if (s + numlen < e) {
2964 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2968 PL_rs = newSVpvs("");
2969 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
2970 tmps = (U8*)SvPVX(PL_rs);
2971 uvchr_to_utf8(tmps, rschar);
2972 SvCUR_set(PL_rs, UNISKIP(rschar));
2977 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2978 if (rschar & ~((U8)~0))
2979 PL_rs = &PL_sv_undef;
2980 else if (!rschar && numlen >= 2)
2981 PL_rs = newSVpvs("");
2983 char ch = (char)rschar;
2984 PL_rs = newSVpvn(&ch, 1);
2987 sv_setsv(get_sv("/", GV_ADD), PL_rs);
2992 PL_unicode = parse_unicode_opts( (const char **)&s );
2993 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2999 while (*s && !isSPACE(*s)) ++s;
3000 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3011 forbid_setid('d', FALSE);
3014 /* -dt indicates to the debugger that threads will be used */
3015 if (*s == 't' && !isALNUM(s[1])) {
3017 my_setenv("PERL5DB_THREADED", "1");
3020 /* The following permits -d:Mod to accepts arguments following an =
3021 in the fashion that -MSome::Mod does. */
3022 if (*s == ':' || *s == '=') {
3023 const char *start = ++s;
3024 const char *const end = s + strlen(s);
3025 SV * const sv = newSVpvs("use Devel::");
3027 /* We now allow -d:Module=Foo,Bar */
3028 while(isALNUM(*s) || *s==':') ++s;
3030 sv_catpvn(sv, start, end - start);
3032 sv_catpvn(sv, start, s-start);
3033 /* Don't use NUL as q// delimiter here, this string goes in the
3035 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3038 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3042 PL_perldb = PERLDB_ALL;
3049 forbid_setid('D', FALSE);
3051 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3052 #else /* !DEBUGGING */
3053 if (ckWARN_d(WARN_DEBUGGING))
3054 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3055 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3056 for (s++; isALNUM(*s); s++) ;
3061 usage(PL_origargv[0]);
3064 Safefree(PL_inplace);
3065 #if defined(__CYGWIN__) /* do backup extension automagically */
3066 if (*(s+1) == '\0') {
3067 PL_inplace = savepvs(".bak");
3070 #endif /* __CYGWIN__ */
3072 const char * const start = ++s;
3073 while (*s && !isSPACE(*s))
3076 PL_inplace = savepvn(start, s - start);
3080 if (*s == '-') /* Additional switches on #! line. */
3084 case 'I': /* -I handled both here and in parse_body() */
3085 forbid_setid('I', FALSE);
3087 while (*s && isSPACE(*s))
3092 /* ignore trailing spaces (possibly followed by other switches) */
3094 for (e = p; *e && !isSPACE(*e); e++) ;
3098 } while (*p && *p != '-');
3100 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3106 Perl_croak(aTHX_ "No directory specified for -I");
3112 SvREFCNT_dec(PL_ors_sv);
3118 PL_ors_sv = newSVpvs("\n");
3119 numlen = 3 + (*s == '0');
3120 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3124 if (RsPARA(PL_rs)) {
3125 PL_ors_sv = newSVpvs("\n\n");
3128 PL_ors_sv = newSVsv(PL_rs);
3133 forbid_setid('M', FALSE); /* XXX ? */
3136 forbid_setid('m', FALSE); /* XXX ? */
3141 const char *use = "use ";
3143 /* -M-foo == 'no foo' */
3144 /* Leading space on " no " is deliberate, to make both
3145 possibilities the same length. */
3146 if (*s == '-') { use = " no "; ++s; }
3147 sv = newSVpvn(use,4);
3149 /* We allow -M'Module qw(Foo Bar)' */
3150 while(isALNUM(*s) || *s==':') {
3159 Perl_croak(aTHX_ "Module name required with -%c option",
3162 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3163 "contains single ':'",
3164 (int)(s - start), start, option);
3165 end = s + strlen(s);
3167 sv_catpvn(sv, start, end - start);
3168 if (option == 'm') {
3170 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3171 sv_catpvs( sv, " ()");
3174 sv_catpvn(sv, start, s-start);
3175 /* Use NUL as q''-delimiter. */
3176 sv_catpvs(sv, " split(/,/,q\0");
3178 sv_catpvn(sv, s, end - s);
3179 sv_catpvs(sv, "\0)");
3182 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3185 Perl_croak(aTHX_ "Missing argument to -%c", option);
3196 forbid_setid('s', FALSE);
3197 PL_doswitches = TRUE;
3211 #ifdef MACOS_TRADITIONAL
3212 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3214 PL_do_undump = TRUE;
3222 if (!sv_derived_from(PL_patchlevel, "version"))
3223 upg_version(PL_patchlevel, TRUE);
3226 SV* level= vstringify(PL_patchlevel);
3227 #ifdef PERL_PATCHNUM
3228 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3229 SV *num = newSVpvs(PERL_PATCHNUM "*");
3231 SV *num = newSVpvs(PERL_PATCHNUM);
3234 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3235 SvREFCNT_dec(level);
3238 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3242 PerlIO_printf(PerlIO_stdout(),
3243 "\nThis is perl, %"SVf
3247 SvREFCNT_dec(level);
3250 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3251 PerlIO_printf(PerlIO_stdout(),
3252 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3253 SVfARG(vstringify(PL_patchlevel))));
3254 PerlIO_printf(PerlIO_stdout(),
3255 Perl_form(aTHX_ " built under %s at %s %s\n",
3256 OSNAME, __DATE__, __TIME__));
3257 PerlIO_printf(PerlIO_stdout(),
3258 Perl_form(aTHX_ " OS Specific Release: %s\n",
3261 #if defined(LOCAL_PATCH_COUNT)
3262 if (LOCAL_PATCH_COUNT > 0)
3263 PerlIO_printf(PerlIO_stdout(),
3264 "\n(with %d registered patch%s, "
3265 "see perl -V for more detail)",
3267 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3270 PerlIO_printf(PerlIO_stdout(),
3271 "\n\nCopyright 1987-2009, Larry Wall\n");
3272 #ifdef MACOS_TRADITIONAL
3273 PerlIO_printf(PerlIO_stdout(),
3274 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
3275 "maintained by Chris Nandor\n");
3278 PerlIO_printf(PerlIO_stdout(),
3279 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3282 PerlIO_printf(PerlIO_stdout(),
3283 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3284 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3287 PerlIO_printf(PerlIO_stdout(),
3288 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3289 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3292 PerlIO_printf(PerlIO_stdout(),
3293 "atariST series port, ++jrb bammi@cadence.com\n");
3296 PerlIO_printf(PerlIO_stdout(),
3297 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3300 PerlIO_printf(PerlIO_stdout(),
3301 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3304 PerlIO_printf(PerlIO_stdout(),
3305 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3308 PerlIO_printf(PerlIO_stdout(),
3309 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3312 PerlIO_printf(PerlIO_stdout(),
3313 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3316 PerlIO_printf(PerlIO_stdout(),
3317 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3320 PerlIO_printf(PerlIO_stdout(),
3321 "MiNT port by Guido Flohr, 1997-1999\n");
3324 PerlIO_printf(PerlIO_stdout(),
3325 "EPOC port by Olaf Flebbe, 1999-2002\n");
3328 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3329 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3332 #ifdef __SYMBIAN32__
3333 PerlIO_printf(PerlIO_stdout(),
3334 "Symbian port by Nokia, 2004-2005\n");
3336 #ifdef BINARY_BUILD_NOTICE
3337 BINARY_BUILD_NOTICE;
3339 PerlIO_printf(PerlIO_stdout(),
3341 Perl may be copied only under the terms of either the Artistic License or the\n\
3342 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3343 Complete documentation for Perl, including FAQ lists, should be found on\n\
3344 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3345 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3348 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3349 PL_dowarn |= G_WARN_ON;
3354 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3355 if (!specialWARN(PL_compiling.cop_warnings))
3356 PerlMemShared_free(PL_compiling.cop_warnings);
3357 PL_compiling.cop_warnings = pWARN_ALL ;
3361 PL_dowarn = G_WARN_ALL_OFF;
3362 if (!specialWARN(PL_compiling.cop_warnings))
3363 PerlMemShared_free(PL_compiling.cop_warnings);
3364 PL_compiling.cop_warnings = pWARN_NONE ;
3371 if (s[0] == '-') /* Additional switches on #! line. */
3376 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3382 #ifdef ALTERNATE_SHEBANG
3383 case 'S': /* OS/2 needs -S on "extproc" line. */
3387 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3392 /* compliments of Tom Christiansen */
3394 /* unexec() can be found in the Gnu emacs distribution */
3395 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3398 Perl_my_unexec(pTHX)
3400 PERL_UNUSED_CONTEXT;
3402 SV * prog = newSVpv(BIN_EXP, 0);
3403 SV * file = newSVpv(PL_origfilename, 0);
3407 sv_catpvs(prog, "/perl");
3408 sv_catpvs(file, ".perldump");
3410 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3411 /* unexec prints msg to stderr in case of failure */
3412 PerlProc_exit(status);
3415 # include <lib$routines.h>
3416 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3417 # elif defined(WIN32) || defined(__CYGWIN__)
3418 Perl_croak(aTHX_ "dump is not supported");
3420 ABORT(); /* for use with undump */
3425 /* initialize curinterp */
3431 # define PERLVAR(var,type)
3432 # define PERLVARA(var,n,type)
3433 # if defined(PERL_IMPLICIT_CONTEXT)
3434 # define PERLVARI(var,type,init) aTHX->var = init;
3435 # define PERLVARIC(var,type,init) aTHX->var = init;
3437 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3438 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
3440 # include "intrpvar.h"
3446 # define PERLVAR(var,type)
3447 # define PERLVARA(var,n,type)
3448 # define PERLVARI(var,type,init) PL_##var = init;
3449 # define PERLVARIC(var,type,init) PL_##var = init;
3450 # include "intrpvar.h"
3457 /* As these are inside a structure, PERLVARI isn't capable of initialising
3459 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3460 PL_reg_poscache = PL_reg_starttry = NULL;
3464 S_init_main_stash(pTHX)
3469 PL_curstash = PL_defstash = newHV();
3470 /* We know that the string "main" will be in the global shared string
3471 table, so it's a small saving to use it rather than allocate another
3473 PL_curstname = newSVpvs_share("main");
3474 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3475 /* If we hadn't caused another reference to "main" to be in the shared
3476 string table above, then it would be worth reordering these two,
3477 because otherwise all we do is delete "main" from it as a consequence
3478 of the SvREFCNT_dec, only to add it again with hv_name_set */
3479 SvREFCNT_dec(GvHV(gv));
3480 hv_name_set(PL_defstash, "main", 4, 0);
3481 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3483 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3485 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3486 GvMULTI_on(PL_incgv);
3487 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3488 GvMULTI_on(PL_hintgv);
3489 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3490 SvREFCNT_inc_simple_void(PL_defgv);
3491 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3492 SvREFCNT_inc_simple_void(PL_errgv);
3493 GvMULTI_on(PL_errgv);
3494 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3495 GvMULTI_on(PL_replgv);
3496 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3497 #ifdef PERL_DONT_CREATE_GVSV
3500 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3502 PL_curstash = PL_defstash;
3503 CopSTASH_set(&PL_compiling, PL_defstash);
3504 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3505 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3507 /* We must init $/ before switches are processed. */
3508 sv_setpvs(get_sv("/", GV_ADD), "\n");
3512 S_open_script(pTHX_ const char *scriptname, bool dosearch,
3513 bool *suidscript, PerlIO **rsfpp)
3518 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3521 PL_origfilename = savepvs("-e");
3524 /* if find_script() returns, it returns a malloc()-ed value */
3525 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3527 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3528 const char *s = scriptname + 8;
3534 * Tell apart "normal" usage of fdscript, e.g.
3535 * with bash on FreeBSD:
3536 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3537 * from usage in suidperl.
3538 * Does any "normal" usage leave garbage after the number???
3539 * Is it a mistake to use a similar /dev/fd/ construct for
3544 * Be supersafe and do some sanity-checks.
3545 * Still, can we be sure we got the right thing?
3548 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3551 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3553 scriptname = savepv(s + 1);
3554 Safefree(PL_origfilename);
3555 PL_origfilename = (char *)scriptname;
3560 CopFILE_free(PL_curcop);
3561 CopFILE_set(PL_curcop, PL_origfilename);
3562 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3563 scriptname = (char *)"";
3564 if (fdscript >= 0) {
3565 *rsfpp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3566 # if defined(HAS_FCNTL) && defined(F_SETFD)
3568 /* ensure close-on-exec */
3569 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3572 else if (!*scriptname) {
3573 forbid_setid(0, *suidscript);
3574 *rsfpp = PerlIO_stdin();
3577 #ifdef FAKE_BIT_BUCKET
3578 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3579 * is called) and still have the "-e" work. (Believe it or not,
3580 * a /dev/null is required for the "-e" to work because source
3581 * filter magic is used to implement it. ) This is *not* a general
3582 * replacement for a /dev/null. What we do here is create a temp
3583 * file (an empty file), open up that as the script, and then
3584 * immediately close and unlink it. Close enough for jazz. */
3585 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3586 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3587 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3588 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3589 FAKE_BIT_BUCKET_TEMPLATE
3591 const char * const err = "Failed to create a fake bit bucket";
3592 if (strEQ(scriptname, BIT_BUCKET)) {
3593 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3594 int tmpfd = mkstemp(tmpname);
3596 scriptname = tmpname;
3599 Perl_croak(aTHX_ err);
3602 scriptname = mktemp(tmpname);
3604 Perl_croak(aTHX_ err);
3609 *rsfpp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3610 #ifdef FAKE_BIT_BUCKET
3611 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3612 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3613 && strlen(scriptname) == sizeof(tmpname) - 1) {
3616 scriptname = BIT_BUCKET;
3618 # if defined(HAS_FCNTL) && defined(F_SETFD)
3620 /* ensure close-on-exec */
3621 fcntl(PerlIO_fileno(*rsfpp),F_SETFD,1);
3625 /* PSz 16 Sep 03 Keep neat error message */
3627 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3629 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3630 CopFILE(PL_curcop), Strerror(errno));
3636 * I_SYSSTATVFS HAS_FSTATVFS
3638 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3639 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3640 * here so that metaconfig picks them up. */
3643 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3644 /* Don't even need this function. */
3647 S_validate_suid(pTHX_ PerlIO *rsfp)
3649 PERL_ARGS_ASSERT_VALIDATE_SUID;
3651 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3654 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3655 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3657 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3660 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3661 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3662 /* not set-id, must be wrapped */
3665 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3668 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3672 register const char *s2;
3673 #ifdef MACOS_TRADITIONAL
3677 PERL_ARGS_ASSERT_FIND_BEGINNING;
3679 /* skip forward in input to the real script? */
3681 #ifdef MACOS_TRADITIONAL
3682 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3684 while (PL_doextract || gMacPerl_AlwaysExtract) {
3685 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL) {
3686 if (!gMacPerl_AlwaysExtract)
3687 Perl_croak(aTHX_ "No Perl script found in input\n");
3689 if (PL_doextract) /* require explicit override ? */
3690 if (!OverrideExtract(PL_origfilename))
3691 Perl_croak(aTHX_ "User aborted script\n");
3693 PL_doextract = FALSE;
3695 /* Pater peccavi, file does not have #! */
3696 PerlIO_rewind(rsfp);
3701 while (PL_doextract) {
3702 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3703 Perl_croak(aTHX_ "No Perl script found in input\n");
3706 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3707 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3708 PL_doextract = FALSE;
3709 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3711 while (*s == ' ' || *s == '\t') s++;
3713 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3714 || s2[-1] == '_') s2--;
3715 if (strnEQ(s2-4,"perl",4))
3716 while ((s = moreswitches(s)))
3719 #ifdef MACOS_TRADITIONAL
3720 /* We are always searching for the #!perl line in MacPerl,
3721 * so if we find it, still keep the line count correct
3722 * by counting lines we already skipped over
3724 for (; maclines > 0 ; maclines--)
3725 PerlIO_ungetc(rsfp, '\n');
3729 /* gMacPerl_AlwaysExtract is false in MPW tool */
3730 } else if (gMacPerl_AlwaysExtract) {
3742 PL_uid = PerlProc_getuid();
3743 PL_euid = PerlProc_geteuid();
3744 PL_gid = PerlProc_getgid();
3745 PL_egid = PerlProc_getegid();
3747 PL_uid |= PL_gid << 16;
3748 PL_euid |= PL_egid << 16;
3750 /* Should not happen: */
3751 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3752 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3755 * Should go by suidscript, not uid!=euid: why disallow
3756 * system("ls") in scripts run from setuid things?
3757 * Or, is this run before we check arguments and set suidscript?
3758 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3759 * (We never have suidscript, can we be sure to have fdscript?)
3760 * Or must then go by UID checks? See comments in forbid_setid also.
3764 /* This is used very early in the lifetime of the program,
3765 * before even the options are parsed, so PL_tainting has
3766 * not been initialized properly. */
3768 Perl_doing_taint(int argc, char *argv[], char *envp[])
3770 #ifndef PERL_IMPLICIT_SYS
3771 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3772 * before we have an interpreter-- and the whole point of this
3773 * function is to be called at such an early stage. If you are on
3774 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3775 * "tainted because running with altered effective ids', you'll
3776 * have to add your own checks somewhere in here. The two most
3777 * known samples of 'implicitness' are Win32 and NetWare, neither
3778 * of which has much of concept of 'uids'. */
3779 int uid = PerlProc_getuid();
3780 int euid = PerlProc_geteuid();
3781 int gid = PerlProc_getgid();
3782 int egid = PerlProc_getegid();
3789 if (uid && (euid != uid || egid != gid))
3791 #endif /* !PERL_IMPLICIT_SYS */
3792 /* This is a really primitive check; environment gets ignored only
3793 * if -T are the first chars together; otherwise one gets
3794 * "Too late" message. */
3795 if ( argc > 1 && argv[1][0] == '-'
3796 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3801 /* Passing the flag as a single char rather than a string is a slight space
3802 optimisation. The only message that isn't /^-.$/ is
3803 "program input from stdin", which is substituted in place of '\0', which
3804 could never be a command line flag. */
3806 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3809 char string[3] = "-x";
3810 const char *message = "program input from stdin";
3817 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3818 if (PL_euid != PL_uid)
3819 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3820 if (PL_egid != PL_gid)
3821 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3822 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3824 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3828 Perl_init_debugger(pTHX)
3831 HV * const ostash = PL_curstash;
3833 PL_curstash = PL_debstash;
3834 PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args", GV_ADDMULTI,
3836 AvREAL_off(PL_dbargs);
3837 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3838 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3839 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3840 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3841 sv_setiv(PL_DBsingle, 0);
3842 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3843 sv_setiv(PL_DBtrace, 0);
3844 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3845 sv_setiv(PL_DBsignal, 0);
3846 PL_curstash = ostash;
3849 #ifndef STRESS_REALLOC
3850 #define REASONABLE(size) (size)
3852 #define REASONABLE(size) (1) /* unreasonable */
3856 Perl_init_stacks(pTHX)
3859 /* start with 128-item stack and 8K cxstack */
3860 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3861 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3862 PL_curstackinfo->si_type = PERLSI_MAIN;
3863 PL_curstack = PL_curstackinfo->si_stack;
3864 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3866 PL_stack_base = AvARRAY(PL_curstack);
3867 PL_stack_sp = PL_stack_base;
3868 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3870 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3873 PL_tmps_max = REASONABLE(128);
3875 Newx(PL_markstack,REASONABLE(32),I32);
3876 PL_markstack_ptr = PL_markstack;
3877 PL_markstack_max = PL_markstack + REASONABLE(32);
3881 Newx(PL_scopestack,REASONABLE(32),I32);
3882 PL_scopestack_ix = 0;
3883 PL_scopestack_max = REASONABLE(32);
3885 Newx(PL_savestack,REASONABLE(128),ANY);
3886 PL_savestack_ix = 0;
3887 PL_savestack_max = REASONABLE(128);
3896 while (PL_curstackinfo->si_next)
3897 PL_curstackinfo = PL_curstackinfo->si_next;
3898 while (PL_curstackinfo) {
3899 PERL_SI *p = PL_curstackinfo->si_prev;
3900 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3901 Safefree(PL_curstackinfo->si_cxstack);
3902 Safefree(PL_curstackinfo);
3903 PL_curstackinfo = p;
3905 Safefree(PL_tmps_stack);
3906 Safefree(PL_markstack);
3907 Safefree(PL_scopestack);
3908 Safefree(PL_savestack);
3913 S_init_predump_symbols(pTHX)
3919 sv_setpvs(get_sv("\"", GV_ADD), " ");
3920 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
3922 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3923 GvMULTI_on(PL_stdingv);
3924 io = GvIOp(PL_stdingv);
3925 IoTYPE(io) = IoTYPE_RDONLY;
3926 IoIFP(io) = PerlIO_stdin();
3927 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
3929 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3931 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3934 IoTYPE(io) = IoTYPE_WRONLY;
3935 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3937 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
3939 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3941 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3942 GvMULTI_on(PL_stderrgv);
3943 io = GvIOp(PL_stderrgv);
3944 IoTYPE(io) = IoTYPE_WRONLY;
3945 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3946 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
3948 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
3950 PL_statname = newSV(0); /* last filename we did stat on */
3952 Safefree(PL_osname);
3953 PL_osname = savepv(OSNAME);
3957 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3961 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
3963 argc--,argv++; /* skip name of script */
3964 if (PL_doswitches) {
3965 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3969 if (argv[0][1] == '-' && !argv[0][2]) {
3973 if ((s = strchr(argv[0], '='))) {
3974 const char *const start_name = argv[0] + 1;
3975 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
3976 TRUE, SVt_PV)), s + 1);
3979 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
3982 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
3983 GvMULTI_on(PL_argvgv);
3984 (void)gv_AVadd(PL_argvgv);
3985 av_clear(GvAVn(PL_argvgv));
3986 for (; argc > 0; argc--,argv++) {
3987 SV * const sv = newSVpv(argv[0],0);
3988 av_push(GvAVn(PL_argvgv),sv);
3989 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3990 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3993 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3994 (void)sv_utf8_decode(sv);
4000 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4005 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4007 PL_toptarget = newSV_type(SVt_PVFM);
4008 sv_setpvs(PL_toptarget, "");
4009 PL_bodytarget = newSV_type(SVt_PVFM);
4010 sv_setpvs(PL_bodytarget, "");
4011 PL_formtarget = PL_bodytarget;
4015 init_argv_symbols(argc,argv);
4017 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4018 #ifdef MACOS_TRADITIONAL
4019 /* $0 is not majick on a Mac */
4020 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
4022 sv_setpv(GvSV(tmpgv),PL_origfilename);
4024 GV * const gv = gv_fetchpv("0", GV_ADD, SVt_PV);
4026 sv_magic(GvSV(gv), MUTABLE_SV(gv), PERL_MAGIC_sv, "0", 1);
4030 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4032 bool env_is_not_environ;
4033 GvMULTI_on(PL_envgv);
4034 hv = GvHVn(PL_envgv);
4035 hv_magic(hv, NULL, PERL_MAGIC_env);
4037 #ifdef USE_ENVIRON_ARRAY
4038 /* Note that if the supplied env parameter is actually a copy
4039 of the global environ then it may now point to free'd memory
4040 if the environment has been modified since. To avoid this
4041 problem we treat env==NULL as meaning 'use the default'
4045 env_is_not_environ = env != environ;
4046 if (env_is_not_environ
4047 # ifdef USE_ITHREADS
4048 && PL_curinterp == aTHX
4057 for (; *env; env++) {
4060 if (!(s = strchr(old_var,'=')) || s == old_var)
4063 #if defined(MSDOS) && !defined(DJGPP)
4065 (void)strupr(old_var);
4068 sv = newSVpv(s+1, 0);
4069 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4070 if (env_is_not_environ)
4074 #endif /* USE_ENVIRON_ARRAY */
4075 #endif /* !PERL_MICRO */
4078 if ((tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4079 SvREADONLY_off(GvSV(tmpgv));
4080 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
4081 SvREADONLY_on(GvSV(tmpgv));
4083 #ifdef THREADS_HAVE_PIDS
4084 PL_ppid = (IV)getppid();
4087 /* touch @F array to prevent spurious warnings 20020415 MJD */
4089 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4094 S_init_perllib(pTHX_ U32 old_vers)
4100 s = PerlEnv_getenv("PERL5LIB");
4102 * It isn't possible to delete an environment variable with
4103 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4104 * case we treat PERL5LIB as undefined if it has a zero-length value.
4106 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4107 if (s && *s != '\0')
4111 incpush_use_sep(s, old_vers ? old_vers : INCPUSH_ADD_SUB_DIRS);
4112 else if (!old_vers) {
4113 s = PerlEnv_getenv("PERLLIB");
4115 incpush_use_sep(s, 0);
4118 /* Treat PERL5?LIB as a possible search list logical name -- the
4119 * "natural" VMS idiom for a Unix path string. We allow each
4120 * element to be a set of |-separated directories for compatibility.
4124 if (my_trnlnm("PERL5LIB",buf,0))
4126 incpush_use_sep(buf, old_vers ? old_vers : INCPUSH_ADD_SUB_DIRS);
4127 } while (my_trnlnm("PERL5LIB",buf,++idx));
4129 while (my_trnlnm("PERLLIB",buf,idx++))
4130 incpush_use_sep(buf, 0);
4134 /* Use the ~-expanded versions of APPLLIB (undocumented),
4135 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
4139 incpush_use_sep(APPLLIB_EXP, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4141 incpush_use_sep(APPLLIB_EXP, old_vers|INCPUSH_CAN_RELOCATE);
4146 #ifdef MACOS_TRADITIONAL
4148 SV * privdir = newSV(0);
4149 char * macperl = PerlEnv_getenv("MACPERL");
4156 incpush_use_sep(ARCHLIB_EXP, INCPUSH_CAN_RELOCATE);
4159 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
4160 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4161 incpush_use_sep(SvPVX(privdir), INCPUSH_ADD_SUB_DIRS);
4162 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
4163 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4164 incpush_use_sep(SvPVX(privdir), INCPUSH_ADD_SUB_DIRS);
4166 SvREFCNT_dec(privdir);
4168 S_incpush(aTHX_ STR_WITH_LEN(":"), 0);
4172 /* sitearch is always relative to sitelib on Windows for
4173 * DLL-based path intuition to work correctly */
4174 # if !defined(WIN32)
4175 incpush_use_sep(SITEARCH_EXP, INCPUSH_CAN_RELOCATE);
4181 /* this picks up sitearch as well */
4182 incpush_use_sep(SITELIB_EXP, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4184 incpush_use_sep(SITELIB_EXP, INCPUSH_CAN_RELOCATE);
4189 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4190 /* Search for version-specific dirs below here */
4191 incpush_use_sep(SITELIB_STEM, old_vers|INCPUSH_CAN_RELOCATE);
4195 #ifdef PERL_VENDORARCH_EXP
4196 /* vendorarch is always relative to vendorlib on Windows for
4197 * DLL-based path intuition to work correctly */
4198 # if !defined(WIN32)
4199 incpush_use_sep(PERL_VENDORARCH_EXP, INCPUSH_CAN_RELOCATE);
4203 #ifdef PERL_VENDORLIB_EXP
4205 /* this picks up vendorarch as well */
4206 incpush_use_sep(PERL_VENDORLIB_EXP,
4207 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4209 incpush_use_sep(PERL_VENDORLIB_EXP, INCPUSH_CAN_RELOCATE);
4214 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4215 /* Search for version-specific dirs below here */
4216 incpush_use_sep(PERL_VENDORLIB_STEM, old_vers|INCPUSH_CAN_RELOCATE);
4221 incpush_use_sep(ARCHLIB_EXP, INCPUSH_CAN_RELOCATE);
4225 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4229 incpush_use_sep(PRIVLIB_EXP, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4231 incpush_use_sep(PRIVLIB_EXP, INCPUSH_CAN_RELOCATE);
4235 #ifdef PERL_OTHERLIBDIRS
4237 incpush_use_sep(PERL_OTHERLIBDIRS, INCPUSH_ADD_SUB_DIRS
4238 |INCPUSH_CAN_RELOCATE);
4240 incpush_use_sep(PERL_OTHERLIBDIRS, old_vers|INCPUSH_CAN_RELOCATE);
4244 /* old_vers should be true, so that this last of all. */
4245 if (!PL_tainting && old_vers)
4246 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4247 #endif /* MACOS_TRADITIONAL */
4250 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4251 # define PERLLIB_SEP ';'
4254 # define PERLLIB_SEP '|'
4256 # if defined(MACOS_TRADITIONAL)
4257 # define PERLLIB_SEP ','
4259 # define PERLLIB_SEP ':'
4263 #ifndef PERLLIB_MANGLE
4264 # define PERLLIB_MANGLE(s,n) (s)
4267 /* Push a directory onto @INC if it exists.
4268 Generate a new SV if we do this, to save needing to copy the SV we push
4271 S_incpush_if_exists(pTHX_ AV *const av, SV *dir)
4276 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4278 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4279 S_ISDIR(tmpstatbuf.st_mode)) {
4287 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4290 const U8 addsubdirs = flags & INCPUSH_ADD_SUB_DIRS;
4291 const U8 addoldvers = flags & INCPUSH_ADD_OLD_VERS;
4292 const U8 canrelocate = flags & INCPUSH_CAN_RELOCATE;
4293 const U8 unshift = flags & INCPUSH_UNSHIFT;
4294 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4301 inc = GvAVn(PL_incgv);
4303 if (addsubdirs || addoldvers) {
4309 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4310 arranged to unshift #! line -I onto the front of @INC. However,
4311 -I can add version and architecture specific libraries, and they
4312 need to go first. The old code assumed that it was always
4313 pushing. Hence to make it work, need to push the architecture
4314 (etc) libraries onto a temporary array, then "unshift" that onto
4315 the front of @INC. */
4317 = (addsubdirs || addoldvers) ? (unshift ? newAV() : inc) : NULL;
4320 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4321 defined to so something (in os2/os2.c), but the code has been
4322 this way, ignoring any possible changed of length, since
4323 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4325 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4327 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4330 #ifdef MACOS_TRADITIONAL
4331 if (!strchr(SvPVX(libdir), ':')) {
4334 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
4336 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
4337 sv_catpvs(libdir, ":");
4340 /* Do the if() outside the #ifdef to avoid warnings about an unused
4343 #ifdef PERL_RELOCATABLE_INC
4345 * Relocatable include entries are marked with a leading .../
4348 * 0: Remove that leading ".../"
4349 * 1: Remove trailing executable name (anything after the last '/')
4350 * from the perl path to give a perl prefix
4352 * While the @INC element starts "../" and the prefix ends with a real
4353 * directory (ie not . or ..) chop that real directory off the prefix
4354 * and the leading "../" from the @INC element. ie a logical "../"
4356 * Finally concatenate the prefix and the remainder of the @INC element
4357 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4358 * generates /usr/local/lib/perl5
4360 const char *libpath = SvPVX(libdir);
4361 STRLEN libpath_len = SvCUR(libdir);
4362 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4364 SV * const caret_X = get_sv("\030", 0);
4365 /* Going to use the SV just as a scratch buffer holding a C
4371 /* $^X is *the* source of taint if tainting is on, hence
4372 SvPOK() won't be true. */
4374 assert(SvPOKp(caret_X));
4375 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4377 /* Firstly take off the leading .../
4378 If all else fail we'll do the paths relative to the current
4380 sv_chop(libdir, libpath + 4);
4381 /* Don't use SvPV as we're intentionally bypassing taining,
4382 mortal copies that the mg_get of tainting creates, and
4383 corruption that seems to come via the save stack.
4384 I guess that the save stack isn't correctly set up yet. */
4385 libpath = SvPVX(libdir);
4386 libpath_len = SvCUR(libdir);
4388 /* This would work more efficiently with memrchr, but as it's
4389 only a GNU extension we'd need to probe for it and
4390 implement our own. Not hard, but maybe not worth it? */
4392 prefix = SvPVX(prefix_sv);
4393 lastslash = strrchr(prefix, '/');
4395 /* First time in with the *lastslash = '\0' we just wipe off
4396 the trailing /perl from (say) /usr/foo/bin/perl
4400 while ((*lastslash = '\0'), /* Do that, come what may. */
4401 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4402 && (lastslash = strrchr(prefix, '/')))) {
4403 if (lastslash[1] == '\0'
4404 || (lastslash[1] == '.'
4405 && (lastslash[2] == '/' /* ends "/." */
4406 || (lastslash[2] == '/'
4407 && lastslash[3] == '/' /* or "/.." */
4409 /* Prefix ends "/" or "/." or "/..", any of which
4410 are fishy, so don't do any more logical cleanup.
4414 /* Remove leading "../" from path */
4417 /* Next iteration round the loop removes the last
4418 directory name from prefix by writing a '\0' in
4419 the while clause. */
4421 /* prefix has been terminated with a '\0' to the correct
4422 length. libpath points somewhere into the libdir SV.
4423 We need to join the 2 with '/' and drop the result into
4425 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4426 SvREFCNT_dec(libdir);
4427 /* And this is the new libdir. */
4430 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4431 /* Need to taint reloccated paths if running set ID */
4432 SvTAINTED_on(libdir);
4435 SvREFCNT_dec(prefix_sv);
4440 * BEFORE pushing libdir onto @INC we may first push version- and
4441 * archname-specific sub-directories.
4443 if (addsubdirs || addoldvers) {
4444 #ifdef PERL_INC_VERSION_LIST
4445 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4446 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4447 const char * const *incver;
4453 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4455 while (unix[len-1] == '/') len--; /* Cosmetic */
4456 sv_usepvn(libdir,unix,len);
4459 PerlIO_printf(Perl_error_log,
4460 "Failed to unixify @INC element \"%s\"\n",
4464 #ifdef MACOS_TRADITIONAL
4465 #define PERL_ARCH_FMT_PREFIX ""
4466 #define PERL_ARCH_FMT_SUFFIX ":"
4467 #define PERL_ARCH_FMT_PATH PERL_FS_VERSION ""
4469 #define PERL_ARCH_FMT_PREFIX "/"
4470 #define PERL_ARCH_FMT_SUFFIX ""
4471 #define PERL_ARCH_FMT_PATH "/" PERL_FS_VERSION
4473 /* .../version/archname if -d .../version/archname */
4474 sv_setsv(subdir, libdir);
4475 sv_catpvs(subdir, PERL_ARCH_FMT_PATH \
4476 PERL_ARCH_FMT_PREFIX ARCHNAME PERL_ARCH_FMT_SUFFIX);
4477 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4479 /* .../version if -d .../version */
4480 sv_setsv(subdir, libdir);
4481 sv_catpvs(subdir, PERL_ARCH_FMT_PATH);
4482 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4484 /* .../archname if -d .../archname */
4485 sv_setsv(subdir, libdir);
4487 PERL_ARCH_FMT_PREFIX ARCHNAME PERL_ARCH_FMT_SUFFIX);
4488 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4492 #ifdef PERL_INC_VERSION_LIST
4494 for (incver = incverlist; *incver; incver++) {
4495 /* .../xxx if -d .../xxx */
4496 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PREFIX \
4497 "%s" PERL_ARCH_FMT_SUFFIX,
4498 SVfARG(libdir), *incver);
4499 subdir = S_incpush_if_exists(aTHX_ av, subdir);
4505 /* finally add this lib directory at the end of @INC */
4507 U32 extra = av_len(av) + 1;
4508 av_unshift(inc, extra + push_basedir);
4510 av_store(inc, extra, libdir);
4512 /* av owns a reference, av_store() expects to be donated a
4513 reference, and av expects to be sane when it's cleared.
4514 If I wanted to be naughty and wrong, I could peek inside the
4515 implementation of av_clear(), realise that it uses
4516 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4517 and so directly steal from it (with a memcpy() to inc, and
4518 then memset() to NULL them out. But people copy code from the
4519 core expecting it to be best practise, so let's use the API.
4520 Although studious readers will note that I'm not checking any
4522 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4526 else if (push_basedir) {
4527 av_push(inc, libdir);
4530 if (!push_basedir) {
4531 assert (SvREFCNT(libdir) == 1);
4532 SvREFCNT_dec(libdir);
4536 assert (SvREFCNT(subdir) == 1);
4537 SvREFCNT_dec(subdir);
4542 S_incpush_use_sep(pTHX_ const char *p, U32 flags)
4544 /* This logic has been broken out from S_incpush(). It may be possible to
4547 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4549 /* Break at all separators */
4553 /* skip any consecutive separators */
4554 while ( *p == PERLLIB_SEP ) {
4555 /* Uncomment the next line for PATH semantics */
4556 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4560 if ((s = strchr(p, PERLLIB_SEP)) != NULL ) {
4561 incpush(p, (STRLEN)(s - p), flags);
4565 incpush(p, 0, flags);
4572 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4576 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4582 PERL_ARGS_ASSERT_CALL_LIST;
4584 while (av_len(paramList) >= 0) {
4585 cv = MUTABLE_CV(av_shift(paramList));
4587 if (paramList == PL_beginav) {
4588 /* save PL_beginav for compiler */
4589 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4591 else if (paramList == PL_checkav) {
4592 /* save PL_checkav for compiler */
4593 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4595 else if (paramList == PL_unitcheckav) {
4596 /* save PL_unitcheckav for compiler */
4597 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4608 PL_madskills |= 16384;
4613 PL_madskills &= ~16384;
4616 (void)SvPV_const(atsv, len);
4618 PL_curcop = &PL_compiling;
4619 CopLINE_set(PL_curcop, oldline);
4620 if (paramList == PL_beginav)
4621 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4623 Perl_sv_catpvf(aTHX_ atsv,
4624 "%s failed--call queue aborted",
4625 paramList == PL_checkav ? "CHECK"
4626 : paramList == PL_initav ? "INIT"
4627 : paramList == PL_unitcheckav ? "UNITCHECK"
4629 while (PL_scopestack_ix > oldscope)
4632 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4639 /* my_exit() was called */
4640 while (PL_scopestack_ix > oldscope)
4643 PL_curstash = PL_defstash;
4644 PL_curcop = &PL_compiling;
4645 CopLINE_set(PL_curcop, oldline);
4647 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4648 if (paramList == PL_beginav)
4649 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4651 Perl_croak(aTHX_ "%s failed--call queue aborted",
4652 paramList == PL_checkav ? "CHECK"
4653 : paramList == PL_initav ? "INIT"
4654 : paramList == PL_unitcheckav ? "UNITCHECK"
4661 PL_curcop = &PL_compiling;
4662 CopLINE_set(PL_curcop, oldline);
4665 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4674 Perl_my_exit(pTHX_ U32 status)
4685 STATUS_EXIT_SET(status);
4692 Perl_my_failure_exit(pTHX)
4696 /* We have been called to fall on our sword. The desired exit code
4697 * should be already set in STATUS_UNIX, but could be shifted over
4698 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4701 * If an error code has not been set, then force the issue.
4703 if (MY_POSIX_EXIT) {
4705 /* According to the die_exit.t tests, if errno is non-zero */
4706 /* It should be used for the error status. */
4708 if (errno == EVMSERR) {
4709 STATUS_NATIVE = vaxc$errno;
4712 /* According to die_exit.t tests, if the child_exit code is */
4713 /* also zero, then we need to exit with a code of 255 */
4714 if ((errno != 0) && (errno < 256))
4715 STATUS_UNIX_EXIT_SET(errno);
4716 else if (STATUS_UNIX < 255) {
4717 STATUS_UNIX_EXIT_SET(255);
4722 /* The exit code could have been set by $? or vmsish which
4723 * means that it may not have fatal set. So convert
4724 * success/warning codes to fatal with out changing
4725 * the POSIX status code. The severity makes VMS native
4726 * status handling work, while UNIX mode programs use the
4727 * the POSIX exit codes.
4729 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4730 STATUS_NATIVE &= STS$M_COND_ID;
4731 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4735 /* Traditionally Perl on VMS always expects a Fatal Error. */
4736 if (vaxc$errno & 1) {
4738 /* So force success status to failure */
4739 if (STATUS_NATIVE & 1)
4744 STATUS_UNIX = EINTR; /* In case something cares */
4749 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4751 /* Encode the severity code */
4752 severity = STATUS_NATIVE & STS$M_SEVERITY;
4753 STATUS_UNIX = (severity ? severity : 1) << 8;
4755 /* Perl expects this to be a fatal error */
4756 if (severity != STS$K_SEVERE)
4765 STATUS_UNIX_SET(errno);
4767 exitstatus = STATUS_UNIX >> 8;
4768 if (exitstatus & 255)
4769 STATUS_UNIX_SET(exitstatus);
4771 STATUS_UNIX_SET(255);
4778 S_my_exit_jump(pTHX)
4783 SvREFCNT_dec(PL_e_script);
4787 POPSTACK_TO(PL_mainstack);
4795 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4798 const char * const p = SvPVX_const(PL_e_script);
4799 const char *nl = strchr(p, '\n');
4801 PERL_UNUSED_ARG(idx);
4802 PERL_UNUSED_ARG(maxlen);
4804 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4806 filter_del(read_e_script);
4809 sv_catpvn(buf_sv, p, nl-p);
4810 sv_chop(PL_e_script, nl);
4816 * c-indentation-style: bsd
4818 * indent-tabs-mode: t
4821 * ex: set ts=8 sts=4 sw=4 noet: