3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, 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/of mithril and of elven glass" --Bilbo
15 /* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
18 * function of the interpreter; that can be found in perlmain.c
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
63 Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64 School of Mathematics and Statistics University of Sydney 2006 Australia
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
81 #define PERL_IN_PERL_C
83 #include "patchlevel.h" /* for local_patches */
87 char *nw_get_sitelib(const char *pl);
90 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
95 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
97 # include <sys/wait.h>
100 # include <sys/uio.h>
105 char control[CMSG_SPACE(sizeof(int))];
122 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
123 char *getenv (char *); /* Usually in <stdlib.h> */
126 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
134 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
141 S_init_tls_and_interp(PerlInterpreter *my_perl)
145 PERL_SET_INTERP(my_perl);
146 #if defined(USE_ITHREADS)
149 PERL_SET_THX(my_perl);
151 MUTEX_INIT(&PL_dollarzero_mutex);
155 PERL_SET_THX(my_perl);
159 #ifdef PERL_IMPLICIT_SYS
161 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
162 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
163 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
164 struct IPerlDir* ipD, struct IPerlSock* ipS,
165 struct IPerlProc* ipP)
167 PerlInterpreter *my_perl;
168 /* Newx() needs interpreter, so call malloc() instead */
169 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
170 S_init_tls_and_interp(my_perl);
171 Zero(my_perl, 1, PerlInterpreter);
187 =head1 Embedding Functions
189 =for apidoc perl_alloc
191 Allocates a new Perl interpreter. See L<perlembed>.
199 PerlInterpreter *my_perl;
201 /* Newx() needs interpreter, so call malloc() instead */
202 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
204 S_init_tls_and_interp(my_perl);
205 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
207 #endif /* PERL_IMPLICIT_SYS */
210 =for apidoc perl_construct
212 Initializes a new Perl interpreter. See L<perlembed>.
218 perl_construct(pTHXx)
221 PERL_UNUSED_ARG(my_perl);
224 PL_perl_destruct_level = 1;
226 if (PL_perl_destruct_level > 0)
229 /* Init the real globals (and main thread)? */
231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
233 PL_linestr = NEWSV(65,79);
234 sv_upgrade(PL_linestr,SVt_PVIV);
236 if (!SvREADONLY(&PL_sv_undef)) {
237 /* set read-only and try to insure than we wont see REFCNT==0
240 SvREADONLY_on(&PL_sv_undef);
241 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
243 sv_setpv(&PL_sv_no,PL_No);
244 /* value lookup in void context - happens to have the side effect
245 of caching the numeric forms. */
248 SvREADONLY_on(&PL_sv_no);
249 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
251 sv_setpv(&PL_sv_yes,PL_Yes);
254 SvREADONLY_on(&PL_sv_yes);
255 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
257 SvREADONLY_on(&PL_sv_placeholder);
258 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
261 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
262 PL_pidstatus = newHV();
265 PL_rs = newSVpvn("\n", 1);
270 PL_lex_state = LEX_NOTPARSING;
276 SET_NUMERIC_STANDARD();
278 #if defined(LOCAL_PATCH_COUNT)
279 PL_localpatches = local_patches; /* For possible -v */
282 #ifdef HAVE_INTERP_INTERN
286 PerlIO_init(aTHX); /* Hook to IO system */
288 PL_fdpid = newAV(); /* for remembering popen pids by fd */
289 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
290 PL_errors = newSVpvn("",0);
291 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
292 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
293 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
295 PL_regex_padav = newAV();
296 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
297 PL_regex_pad = AvARRAY(PL_regex_padav);
299 #ifdef USE_REENTRANT_API
300 Perl_reentrant_init(aTHX);
303 /* Note that strtab is a rather special HV. Assumptions are made
304 about not iterating on it, and not adding tie magic to it.
305 It is properly deallocated in perl_destruct() */
308 HvSHAREKEYS_off(PL_strtab); /* mandatory */
309 hv_ksplit(PL_strtab, 512);
311 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
312 _dyld_lookup_and_bind
313 ("__environ", (unsigned long *) &environ_pointer, NULL);
317 # ifdef USE_ENVIRON_ARRAY
318 PL_origenviron = environ;
322 /* Use sysconf(_SC_CLK_TCK) if available, if not
323 * available or if the sysconf() fails, use the HZ.
324 * BeOS has those, but returns the wrong value.
325 * The HZ if not originally defined has been by now
326 * been defined as CLK_TCK, if available. */
327 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
328 PL_clocktick = sysconf(_SC_CLK_TCK);
329 if (PL_clocktick <= 0)
333 PL_stashcache = newHV();
335 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
336 (int)PERL_VERSION, (int)PERL_SUBVERSION);
339 if (!PL_mmap_page_size) {
340 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
342 SETERRNO(0, SS_NORMAL);
344 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
346 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
348 if ((long) PL_mmap_page_size < 0) {
350 SV * const error = ERRSV;
351 (void) SvUPGRADE(error, SVt_PV);
352 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
355 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
359 # ifdef HAS_GETPAGESIZE
360 PL_mmap_page_size = getpagesize();
362 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
363 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
367 if (PL_mmap_page_size <= 0)
368 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
369 (IV) PL_mmap_page_size);
371 #endif /* HAS_MMAP */
373 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
374 PL_timesbase.tms_utime = 0;
375 PL_timesbase.tms_stime = 0;
376 PL_timesbase.tms_cutime = 0;
377 PL_timesbase.tms_cstime = 0;
384 =for apidoc nothreadhook
386 Stub that provides thread hook for perl_destruct when there are
393 Perl_nothreadhook(pTHX)
398 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
400 Perl_dump_sv_child(pTHX_ SV *sv)
403 const int sock = PL_dumper_fd;
404 const int debug_fd = PerlIO_fileno(Perl_debug_log);
405 union control_un control;
408 struct cmsghdr *cmptr;
410 unsigned char buffer[256];
412 if(sock == -1 || debug_fd == -1)
415 PerlIO_flush(Perl_debug_log);
417 /* All these shenanigans are to pass a file descriptor over to our child for
418 it to dump out to. We can't let it hold open the file descriptor when it
419 forks, as the file descriptor it will dump to can turn out to be one end
420 of pipe that some other process will wait on for EOF. (So as it would
421 be open, the wait would be forever. */
423 msg.msg_control = control.control;
424 msg.msg_controllen = sizeof(control.control);
425 /* We're a connected socket so we don't need a destination */
431 cmptr = CMSG_FIRSTHDR(&msg);
432 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
433 cmptr->cmsg_level = SOL_SOCKET;
434 cmptr->cmsg_type = SCM_RIGHTS;
435 *((int *)CMSG_DATA(cmptr)) = 1;
437 vec[0].iov_base = (void*)&sv;
438 vec[0].iov_len = sizeof(sv);
439 got = sendmsg(sock, &msg, 0);
442 perror("Debug leaking scalars parent sendmsg failed");
445 if(got < sizeof(sv)) {
446 perror("Debug leaking scalars parent short sendmsg");
450 /* Return protocol is
452 unsigned char: length of location string (0 for empty)
453 unsigned char*: string (not terminated)
455 vec[0].iov_base = (void*)&returned_errno;
456 vec[0].iov_len = sizeof(returned_errno);
457 vec[1].iov_base = buffer;
460 got = readv(sock, vec, 2);
463 perror("Debug leaking scalars parent read failed");
464 PerlIO_flush(PerlIO_stderr());
467 if(got < sizeof(returned_errno) + 1) {
468 perror("Debug leaking scalars parent short read");
469 PerlIO_flush(PerlIO_stderr());
474 got = read(sock, buffer + 1, *buffer);
476 perror("Debug leaking scalars parent read 2 failed");
477 PerlIO_flush(PerlIO_stderr());
482 perror("Debug leaking scalars parent short read 2");
483 PerlIO_flush(PerlIO_stderr());
488 if (returned_errno || *buffer) {
489 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
490 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
491 returned_errno, strerror(returned_errno));
497 =for apidoc perl_destruct
499 Shuts down a Perl interpreter. See L<perlembed>.
508 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
510 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
514 PERL_UNUSED_ARG(my_perl);
516 /* wait for all pseudo-forked children to finish */
517 PERL_WAIT_FOR_CHILDREN;
519 destruct_level = PL_perl_destruct_level;
522 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
524 const int i = atoi(s);
525 if (destruct_level < i)
531 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
537 if (PL_endav && !PL_minus_c)
538 call_list(PL_scopestack_ix, PL_endav);
544 /* Need to flush since END blocks can produce output */
547 if (CALL_FPTR(PL_threadhook)(aTHX)) {
548 /* Threads hook has vetoed further cleanup */
552 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
553 if (destruct_level != 0) {
554 /* Fork here to create a child. Our child's job is to preserve the
555 state of scalars prior to destruction, so that we can instruct it
556 to dump any scalars that we later find have leaked.
557 There's no subtlety in this code - it assumes POSIX, and it doesn't
561 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
562 perror("Debug leaking scalars socketpair failed");
568 perror("Debug leaking scalars fork failed");
572 /* We are the child */
573 const int sock = fd[1];
574 const int debug_fd = PerlIO_fileno(Perl_debug_log);
577 /* Our success message is an integer 0, and a char 0 */
578 static const char success[sizeof(int) + 1];
582 /* We need to close all other file descriptors otherwise we end up
583 with interesting hangs, where the parent closes its end of a
584 pipe, and sits waiting for (another) child to terminate. Only
585 that child never terminates, because it never gets EOF, because
586 we also have the far end of the pipe open. We even need to
587 close the debugging fd, because sometimes it happens to be one
588 end of a pipe, and a process is waiting on the other end for
589 EOF. Normally it would be closed at some point earlier in
590 destruction, but if we happen to cause the pipe to remain open,
591 EOF never occurs, and we get an infinite hang. Hence all the
592 games to pass in a file descriptor if it's actually needed. */
594 f = sysconf(_SC_OPEN_MAX);
596 where = "sysconf failed";
607 union control_un control;
610 struct cmsghdr *cmptr;
614 msg.msg_control = control.control;
615 msg.msg_controllen = sizeof(control.control);
616 /* We're a connected socket so we don't need a source */
620 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
622 vec[0].iov_base = (void*)⌖
623 vec[0].iov_len = sizeof(target);
625 got = recvmsg(sock, &msg, 0);
630 where = "recv failed";
633 if(got < sizeof(target)) {
634 where = "short recv";
638 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
642 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
643 where = "wrong cmsg_len";
646 if(cmptr->cmsg_level != SOL_SOCKET) {
647 where = "wrong cmsg_level";
650 if(cmptr->cmsg_type != SCM_RIGHTS) {
651 where = "wrong cmsg_type";
655 got_fd = *(int*)CMSG_DATA(cmptr);
656 /* For our last little bit of trickery, put the file descriptor
657 back into Perl_debug_log, as if we never actually closed it
659 if(got_fd != debug_fd) {
660 if (dup2(got_fd, debug_fd) == -1) {
667 PerlIO_flush(Perl_debug_log);
669 got = write(sock, &success, sizeof(success));
672 where = "write failed";
675 if(got < sizeof(success)) {
676 where = "short write";
683 int send_errno = errno;
684 unsigned char length = (unsigned char) strlen(where);
685 struct iovec failure[3] = {
686 {(void*)&send_errno, sizeof(send_errno)},
688 {(void*)where, length}
690 int got = writev(sock, failure, 3);
691 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
692 in the parent if we try to read from the socketpair after the
693 child has exited, even if there was data to read.
694 So sleep a bit to give the parent a fighting chance of
697 _exit((got == -1) ? errno : 0);
701 PL_dumper_fd = fd[0];
706 /* We must account for everything. */
708 /* Destroy the main CV and syntax tree */
709 /* Do this now, because destroying ops can cause new SVs to be generated
710 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
711 PL_curcop to point to a valid op from which the filename structure
713 PL_curcop = &PL_compiling;
715 /* ensure comppad/curpad to refer to main's pad */
716 if (CvPADLIST(PL_main_cv)) {
717 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
719 op_free(PL_main_root);
720 PL_main_root = Nullop;
722 PL_main_start = Nullop;
723 SvREFCNT_dec(PL_main_cv);
727 /* Tell PerlIO we are about to tear things apart in case
728 we have layers which are using resources that should
732 PerlIO_destruct(aTHX);
734 if (PL_sv_objcount) {
736 * Try to destruct global references. We do this first so that the
737 * destructors and destructees still exist. Some sv's might remain.
738 * Non-referenced objects are on their own.
742 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
743 PL_defoutgv = Nullgv; /* may have been freed */
746 /* unhook hooks which will soon be, or use, destroyed data */
747 SvREFCNT_dec(PL_warnhook);
748 PL_warnhook = Nullsv;
749 SvREFCNT_dec(PL_diehook);
752 /* call exit list functions */
753 while (PL_exitlistlen-- > 0)
754 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
756 Safefree(PL_exitlist);
761 if (destruct_level == 0){
763 DEBUG_P(debprofdump());
765 #if defined(PERLIO_LAYERS)
766 /* No more IO - including error messages ! */
767 PerlIO_cleanup(aTHX);
770 /* The exit() function will do everything that needs doing. */
774 /* jettison our possibly duplicated environment */
775 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
776 * so we certainly shouldn't free it here
779 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
780 if (environ != PL_origenviron && !PL_use_safe_putenv
782 /* only main thread can free environ[0] contents */
783 && PL_curinterp == aTHX
789 for (i = 0; environ[i]; i++)
790 safesysfree(environ[i]);
792 /* Must use safesysfree() when working with environ. */
793 safesysfree(environ);
795 environ = PL_origenviron;
798 #endif /* !PERL_MICRO */
800 /* reset so print() ends up where we expect */
804 /* the syntax tree is shared between clones
805 * so op_free(PL_main_root) only ReREFCNT_dec's
806 * REGEXPs in the parent interpreter
807 * we need to manually ReREFCNT_dec for the clones
810 I32 i = AvFILLp(PL_regex_padav) + 1;
811 SV **ary = AvARRAY(PL_regex_padav);
816 if (SvFLAGS(resv) & SVf_BREAK) {
817 /* this is PL_reg_curpm, already freed
818 * flag is set in regexec.c:S_regtry
820 SvFLAGS(resv) &= ~SVf_BREAK;
822 else if(SvREPADTMP(resv)) {
823 SvREPADTMP_off(resv);
825 else if(SvIOKp(resv)) {
826 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
831 SvREFCNT_dec(PL_regex_padav);
832 PL_regex_padav = Nullav;
836 SvREFCNT_dec((SV*) PL_stashcache);
837 PL_stashcache = NULL;
839 /* loosen bonds of global variables */
842 (void)PerlIO_close(PL_rsfp);
846 /* Filters for program text */
847 SvREFCNT_dec(PL_rsfp_filters);
848 PL_rsfp_filters = Nullav;
851 PL_preprocess = FALSE;
857 PL_doswitches = FALSE;
858 PL_dowarn = G_WARN_OFF;
859 PL_doextract = FALSE;
860 PL_sawampersand = FALSE; /* must save all match strings */
863 Safefree(PL_inplace);
865 SvREFCNT_dec(PL_patchlevel);
868 SvREFCNT_dec(PL_e_script);
869 PL_e_script = Nullsv;
874 /* magical thingies */
876 SvREFCNT_dec(PL_ofs_sv); /* $, */
879 SvREFCNT_dec(PL_ors_sv); /* $\ */
882 SvREFCNT_dec(PL_rs); /* $/ */
885 PL_multiline = 0; /* $* */
886 Safefree(PL_osname); /* $^O */
889 SvREFCNT_dec(PL_statname);
890 PL_statname = Nullsv;
893 /* defgv, aka *_ should be taken care of elsewhere */
895 /* clean up after study() */
896 SvREFCNT_dec(PL_lastscream);
897 PL_lastscream = Nullsv;
898 Safefree(PL_screamfirst);
900 Safefree(PL_screamnext);
904 Safefree(PL_efloatbuf);
905 PL_efloatbuf = Nullch;
908 /* startup and shutdown function lists */
909 SvREFCNT_dec(PL_beginav);
910 SvREFCNT_dec(PL_beginav_save);
911 SvREFCNT_dec(PL_endav);
912 SvREFCNT_dec(PL_checkav);
913 SvREFCNT_dec(PL_checkav_save);
914 SvREFCNT_dec(PL_initav);
916 PL_beginav_save = Nullav;
919 PL_checkav_save = Nullav;
922 /* shortcuts just get cleared */
928 PL_argvoutgv = Nullgv;
930 PL_stderrgv = Nullgv;
931 PL_last_in_gv = Nullgv;
936 PL_DBsingle = Nullsv;
938 PL_DBsignal = Nullsv;
939 PL_DBassertion = Nullsv;
942 PL_debstash = Nullhv;
944 SvREFCNT_dec(PL_argvout_stack);
945 PL_argvout_stack = Nullav;
947 SvREFCNT_dec(PL_modglobal);
948 PL_modglobal = Nullhv;
949 SvREFCNT_dec(PL_preambleav);
950 PL_preambleav = Nullav;
951 SvREFCNT_dec(PL_subname);
953 SvREFCNT_dec(PL_linestr);
955 SvREFCNT_dec(PL_pidstatus);
956 PL_pidstatus = Nullhv;
957 SvREFCNT_dec(PL_toptarget);
958 PL_toptarget = Nullsv;
959 SvREFCNT_dec(PL_bodytarget);
960 PL_bodytarget = Nullsv;
961 PL_formtarget = Nullsv;
963 /* free locale stuff */
964 #ifdef USE_LOCALE_COLLATE
965 Safefree(PL_collation_name);
966 PL_collation_name = Nullch;
969 #ifdef USE_LOCALE_NUMERIC
970 Safefree(PL_numeric_name);
971 PL_numeric_name = Nullch;
972 SvREFCNT_dec(PL_numeric_radix_sv);
973 PL_numeric_radix_sv = Nullsv;
976 /* clear utf8 character classes */
977 SvREFCNT_dec(PL_utf8_alnum);
978 SvREFCNT_dec(PL_utf8_alnumc);
979 SvREFCNT_dec(PL_utf8_ascii);
980 SvREFCNT_dec(PL_utf8_alpha);
981 SvREFCNT_dec(PL_utf8_space);
982 SvREFCNT_dec(PL_utf8_cntrl);
983 SvREFCNT_dec(PL_utf8_graph);
984 SvREFCNT_dec(PL_utf8_digit);
985 SvREFCNT_dec(PL_utf8_upper);
986 SvREFCNT_dec(PL_utf8_lower);
987 SvREFCNT_dec(PL_utf8_print);
988 SvREFCNT_dec(PL_utf8_punct);
989 SvREFCNT_dec(PL_utf8_xdigit);
990 SvREFCNT_dec(PL_utf8_mark);
991 SvREFCNT_dec(PL_utf8_toupper);
992 SvREFCNT_dec(PL_utf8_totitle);
993 SvREFCNT_dec(PL_utf8_tolower);
994 SvREFCNT_dec(PL_utf8_tofold);
995 SvREFCNT_dec(PL_utf8_idstart);
996 SvREFCNT_dec(PL_utf8_idcont);
997 PL_utf8_alnum = Nullsv;
998 PL_utf8_alnumc = Nullsv;
999 PL_utf8_ascii = Nullsv;
1000 PL_utf8_alpha = Nullsv;
1001 PL_utf8_space = Nullsv;
1002 PL_utf8_cntrl = Nullsv;
1003 PL_utf8_graph = Nullsv;
1004 PL_utf8_digit = Nullsv;
1005 PL_utf8_upper = Nullsv;
1006 PL_utf8_lower = Nullsv;
1007 PL_utf8_print = Nullsv;
1008 PL_utf8_punct = Nullsv;
1009 PL_utf8_xdigit = Nullsv;
1010 PL_utf8_mark = Nullsv;
1011 PL_utf8_toupper = Nullsv;
1012 PL_utf8_totitle = Nullsv;
1013 PL_utf8_tolower = Nullsv;
1014 PL_utf8_tofold = Nullsv;
1015 PL_utf8_idstart = Nullsv;
1016 PL_utf8_idcont = Nullsv;
1018 if (!specialWARN(PL_compiling.cop_warnings))
1019 SvREFCNT_dec(PL_compiling.cop_warnings);
1020 PL_compiling.cop_warnings = Nullsv;
1021 if (!specialCopIO(PL_compiling.cop_io))
1022 SvREFCNT_dec(PL_compiling.cop_io);
1023 PL_compiling.cop_io = Nullsv;
1024 CopFILE_free(&PL_compiling);
1025 CopSTASH_free(&PL_compiling);
1027 /* Prepare to destruct main symbol table. */
1032 SvREFCNT_dec(PL_curstname);
1033 PL_curstname = Nullsv;
1035 /* clear queued errors */
1036 SvREFCNT_dec(PL_errors);
1040 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
1041 if (PL_scopestack_ix != 0)
1042 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1043 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1044 (long)PL_scopestack_ix);
1045 if (PL_savestack_ix != 0)
1046 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1047 "Unbalanced saves: %ld more saves than restores\n",
1048 (long)PL_savestack_ix);
1049 if (PL_tmps_floor != -1)
1050 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1051 (long)PL_tmps_floor + 1);
1052 if (cxstack_ix != -1)
1053 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1054 (long)cxstack_ix + 1);
1057 /* Now absolutely destruct everything, somehow or other, loops or no. */
1058 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
1059 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
1061 /* the 2 is for PL_fdpid and PL_strtab */
1062 while (PL_sv_count > 2 && sv_clean_all())
1065 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1066 SvFLAGS(PL_fdpid) |= SVt_PVAV;
1067 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1068 SvFLAGS(PL_strtab) |= SVt_PVHV;
1070 AvREAL_off(PL_fdpid); /* no surviving entries */
1071 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1074 #ifdef HAVE_INTERP_INTERN
1078 /* Destruct the global string table. */
1080 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1081 * so that sv_free() won't fail on them.
1082 * Now that the global string table is using a single hunk of memory
1083 * for both HE and HEK, we either need to explicitly unshare it the
1084 * correct way, or actually free things here.
1087 const I32 max = HvMAX(PL_strtab);
1088 HE ** const array = HvARRAY(PL_strtab);
1089 HE *hent = array[0];
1092 if (hent && ckWARN_d(WARN_INTERNAL)) {
1093 HE * const next = HeNEXT(hent);
1094 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1095 "Unbalanced string table refcount: (%ld) for \"%s\"",
1096 (long)(HeVAL(hent) - Nullsv), HeKEY(hent));
1103 hent = array[riter];
1108 HvARRAY(PL_strtab) = 0;
1109 HvTOTALKEYS(PL_strtab) = 0;
1110 HvFILL(PL_strtab) = 0;
1112 SvREFCNT_dec(PL_strtab);
1115 /* free the pointer tables used for cloning */
1116 ptr_table_free(PL_ptr_table);
1117 PL_ptr_table = (PTR_TBL_t*)NULL;
1120 /* free special SVs */
1122 SvREFCNT(&PL_sv_yes) = 0;
1123 sv_clear(&PL_sv_yes);
1124 SvANY(&PL_sv_yes) = NULL;
1125 SvFLAGS(&PL_sv_yes) = 0;
1127 SvREFCNT(&PL_sv_no) = 0;
1128 sv_clear(&PL_sv_no);
1129 SvANY(&PL_sv_no) = NULL;
1130 SvFLAGS(&PL_sv_no) = 0;
1134 for (i=0; i<=2; i++) {
1135 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1136 sv_clear(PERL_DEBUG_PAD(i));
1137 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1138 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1142 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1143 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1145 #ifdef DEBUG_LEAKING_SCALARS
1146 if (PL_sv_count != 0) {
1151 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1152 svend = &sva[SvREFCNT(sva)];
1153 for (sv = sva + 1; sv < svend; ++sv) {
1154 if (SvTYPE(sv) != SVTYPEMASK) {
1155 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1157 " refcnt=%"UVuf pTHX__FORMAT "\n"
1158 "\tallocated at %s:%d %s %s%s\n",
1159 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1160 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1162 sv->sv_debug_inpad ? "for" : "by",
1163 sv->sv_debug_optype ?
1164 PL_op_name[sv->sv_debug_optype]: "(none)",
1165 sv->sv_debug_cloned ? " (cloned)" : ""
1167 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1168 Perl_dump_sv_child(aTHX_ sv);
1174 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1178 /* Wait for up to 4 seconds for child to terminate.
1179 This seems to be the least effort way of timing out on reaping
1181 struct timeval waitfor = {4, 0};
1182 int sock = PL_dumper_fd;
1186 FD_SET(sock, &rset);
1187 select(sock + 1, &rset, NULL, NULL, &waitfor);
1188 waitpid(child, &status, WNOHANG);
1196 #if defined(PERLIO_LAYERS)
1197 /* No more IO - including error messages ! */
1198 PerlIO_cleanup(aTHX);
1201 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1202 as currently layers use it rather than Nullsv as a marker
1203 for no arg - and will try and SvREFCNT_dec it.
1205 SvREFCNT(&PL_sv_undef) = 0;
1206 SvREADONLY_off(&PL_sv_undef);
1208 Safefree(PL_origfilename);
1209 PL_origfilename = Nullch;
1210 Safefree(PL_reg_start_tmp);
1211 PL_reg_start_tmp = (char**)NULL;
1212 PL_reg_start_tmpl = 0;
1213 Safefree(PL_reg_curpm);
1214 Safefree(PL_reg_poscache);
1215 free_tied_hv_pool();
1216 Safefree(PL_op_mask);
1217 Safefree(PL_psig_ptr);
1218 PL_psig_ptr = (SV**)NULL;
1219 Safefree(PL_psig_name);
1220 PL_psig_name = (SV**)NULL;
1221 Safefree(PL_bitcount);
1222 PL_bitcount = Nullch;
1223 Safefree(PL_psig_pend);
1224 PL_psig_pend = (int*)NULL;
1225 PL_formfeed = Nullsv;
1227 PL_tainting = FALSE;
1228 PL_taint_warn = FALSE;
1229 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1232 DEBUG_P(debprofdump());
1234 #ifdef USE_REENTRANT_API
1235 Perl_reentrant_free(aTHX);
1240 /* As the absolutely last thing, free the non-arena SV for mess() */
1243 /* we know that type == SVt_PVMG */
1245 /* it could have accumulated taint magic */
1248 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1249 moremagic = mg->mg_moremagic;
1250 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1252 Safefree(mg->mg_ptr);
1256 /* we know that type >= SVt_PV */
1257 SvPV_free(PL_mess_sv);
1258 Safefree(SvANY(PL_mess_sv));
1259 Safefree(PL_mess_sv);
1260 PL_mess_sv = Nullsv;
1266 =for apidoc perl_free
1268 Releases a Perl interpreter. See L<perlembed>.
1276 #if defined(WIN32) || defined(NETWARE)
1277 # if defined(PERL_IMPLICIT_SYS)
1279 void *host = nw_internal_host;
1281 void *host = w32_internal_host;
1283 PerlMem_free(aTHXx);
1285 nw_delete_internal_host(host);
1287 win32_delete_internal_host(host);
1290 PerlMem_free(aTHXx);
1293 PerlMem_free(aTHXx);
1297 #if defined(USE_5005THREADS) || defined(USE_ITHREADS)
1298 /* provide destructors to clean up the thread key when libperl is unloaded */
1299 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1301 #if defined(__hpux) && __ux_version > 1020 && !defined(__GNUC__)
1302 #pragma fini "perl_fini"
1306 #if defined(__GNUC__)
1307 __attribute__((destructor))
1317 #endif /* THREADS */
1320 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1322 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1323 PL_exitlist[PL_exitlistlen].fn = fn;
1324 PL_exitlist[PL_exitlistlen].ptr = ptr;
1328 #ifdef HAS_PROCSELFEXE
1329 /* This is a function so that we don't hold on to MAXPATHLEN
1330 bytes of stack longer than necessary
1333 S_procself_val(pTHX_ SV *sv, const char *arg0)
1335 char buf[MAXPATHLEN];
1336 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1338 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1339 includes a spurious NUL which will cause $^X to fail in system
1340 or backticks (this will prevent extensions from being built and
1341 many tests from working). readlink is not meant to add a NUL.
1342 Normal readlink works fine.
1344 if (len > 0 && buf[len-1] == '\0') {
1348 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1349 returning the text "unknown" from the readlink rather than the path
1350 to the executable (or returning an error from the readlink). Any valid
1351 path has a '/' in it somewhere, so use that to validate the result.
1352 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1354 if (len > 0 && memchr(buf, '/', len)) {
1355 sv_setpvn(sv,buf,len);
1361 #endif /* HAS_PROCSELFEXE */
1364 S_set_caret_X(pTHX) {
1365 GV* tmpgv = gv_fetchpv("\030",TRUE, SVt_PV); /* $^X */
1367 #ifdef HAS_PROCSELFEXE
1368 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1371 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
1373 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
1380 =for apidoc perl_parse
1382 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1388 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1395 PERL_UNUSED_VAR(my_perl);
1397 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1400 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
1401 setuid perl scripts securely.\n");
1402 #endif /* IAMSUID */
1405 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1406 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1407 * This MUST be done before any hash stores or fetches take place.
1408 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1409 * yourself, it is your responsibility to provide a good random seed!
1410 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1411 if (!PL_rehash_seed_set)
1412 PL_rehash_seed = get_hash_seed();
1414 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1416 if (s && (atoi(s) == 1))
1417 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1419 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1425 /* Set PL_origalen be the sum of the contiguous argv[]
1426 * elements plus the size of the env in case that it is
1427 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1428 * as the maximum modifiable length of $0. In the worst case
1429 * the area we are able to modify is limited to the size of
1430 * the original argv[0]. (See below for 'contiguous', though.)
1432 const char *s = NULL;
1435 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1436 /* Do the mask check only if the args seem like aligned. */
1438 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1440 /* See if all the arguments are contiguous in memory. Note
1441 * that 'contiguous' is a loose term because some platforms
1442 * align the argv[] and the envp[]. If the arguments look
1443 * like non-aligned, assume that they are 'strictly' or
1444 * 'traditionally' contiguous. If the arguments look like
1445 * aligned, we just check that they are within aligned
1446 * PTRSIZE bytes. As long as no system has something bizarre
1447 * like the argv[] interleaved with some other data, we are
1448 * fine. (Did I just evoke Murphy's Law?) --jhi */
1449 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1451 for (i = 1; i < PL_origargc; i++) {
1452 if ((PL_origargv[i] == s + 1
1454 || PL_origargv[i] == s + 2
1459 (PL_origargv[i] > s &&
1461 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1471 /* Can we grab env area too to be used as the area for $0? */
1472 if (PL_origenviron) {
1473 if ((PL_origenviron[0] == s + 1
1475 || (PL_origenviron[0] == s + 9 && (s += 8))
1480 (PL_origenviron[0] > s &&
1481 PL_origenviron[0] <=
1482 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1486 s = PL_origenviron[0];
1489 my_setenv("NoNe SuCh", Nullch);
1490 /* Force copy of environment. */
1491 for (i = 1; PL_origenviron[i]; i++) {
1492 if (PL_origenviron[i] == s + 1
1495 (PL_origenviron[i] > s &&
1496 PL_origenviron[i] <=
1497 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1500 s = PL_origenviron[i];
1508 PL_origalen = s - PL_origargv[0] + 1;
1513 /* Come here if running an undumped a.out. */
1515 PL_origfilename = savepv(argv[0]);
1516 PL_do_undump = FALSE;
1517 cxstack_ix = -1; /* start label stack again */
1519 assert (!PL_tainted);
1521 S_set_caret_X(aTHX);
1523 init_postdump_symbols(argc,argv,env);
1528 op_free(PL_main_root);
1529 PL_main_root = Nullop;
1531 PL_main_start = Nullop;
1532 SvREFCNT_dec(PL_main_cv);
1533 PL_main_cv = Nullcv;
1536 oldscope = PL_scopestack_ix;
1537 PL_dowarn = G_WARN_OFF;
1542 parse_body(env,xsinit);
1544 call_list(oldscope, PL_checkav);
1551 /* my_exit() was called */
1552 while (PL_scopestack_ix > oldscope)
1555 PL_curstash = PL_defstash;
1557 call_list(oldscope, PL_checkav);
1561 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1570 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1573 int argc = PL_origargc;
1574 char **argv = PL_origargv;
1575 const char *scriptname = NULL;
1576 VOL bool dosearch = FALSE;
1577 const char *validarg = "";
1580 const char *cddir = Nullch;
1581 #ifdef USE_SITECUSTOMIZE
1582 bool minus_f = FALSE;
1587 sv_setpvn(PL_linestr,"",0);
1588 sv = newSVpvn("",0); /* first used for -I flags */
1592 for (argc--,argv++; argc > 0; argc--,argv++) {
1593 if (argv[0][0] != '-' || !argv[0][1])
1597 validarg = " PHOOEY ";
1601 * Can we rely on the kernel to start scripts with argv[1] set to
1602 * contain all #! line switches (the whole line)? (argv[0] is set to
1603 * the interpreter name, argv[2] to the script name; argv[3] and
1604 * above may contain other arguments.)
1611 #ifndef PERL_STRICT_CR
1636 if ((s = moreswitches(s)))
1641 CHECK_MALLOC_TOO_LATE_FOR('t');
1642 if( !PL_tainting ) {
1643 PL_taint_warn = TRUE;
1649 CHECK_MALLOC_TOO_LATE_FOR('T');
1651 PL_taint_warn = FALSE;
1656 #ifdef MACOS_TRADITIONAL
1657 /* ignore -e for Dev:Pseudo argument */
1658 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1663 PL_e_script = newSVpvn("",0);
1664 filter_add(read_e_script, NULL);
1667 sv_catpv(PL_e_script, s);
1669 sv_catpv(PL_e_script, argv[1]);
1673 Perl_croak(aTHX_ "No code specified for -e");
1674 sv_catpv(PL_e_script, "\n");
1678 #ifdef USE_SITECUSTOMIZE
1684 case 'I': /* -I handled both here and in moreswitches() */
1686 if (!*++s && (s=argv[1]) != Nullch) {
1690 STRLEN len = strlen(s);
1691 const char * const p = savepvn(s, len);
1692 incpush(p, TRUE, TRUE, FALSE, FALSE);
1693 sv_catpvn(sv, "-I", 2);
1694 sv_catpvn(sv, p, len);
1695 sv_catpvn(sv, " ", 1);
1699 Perl_croak(aTHX_ "No directory specified for -I");
1703 PL_preprocess = TRUE;
1716 PL_preambleav = newAV();
1717 av_push(PL_preambleav,
1718 newSVpv("use Config;",0));
1722 opts_prog = newSVpv("print Config::myconfig(),",0);
1724 sv_catpv(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
1726 sv_catpv(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
1728 opts = SvCUR(opts_prog);
1730 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
1734 # ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1735 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
1737 # ifdef FAKE_THREADS
1740 # ifdef MULTIPLICITY
1746 # ifdef PERL_DONT_CREATE_GVSV
1747 " PERL_DONT_CREATE_GVSV"
1749 # ifdef PERL_GLOBAL_STRUCT
1750 " PERL_GLOBAL_STRUCT"
1752 # ifdef PERL_IMPLICIT_CONTEXT
1753 " PERL_IMPLICIT_CONTEXT"
1755 # ifdef PERL_IMPLICIT_SYS
1756 " PERL_IMPLICIT_SYS"
1758 # ifdef PERL_MALLOC_WRAP
1761 # ifdef PERL_NEED_APPCTX
1764 # ifdef PERL_NEED_TIMESBASE
1765 " PERL_NEED_TIMESBASE"
1767 # ifdef PERL_OLD_COPY_ON_WRITE
1768 " PERL_OLD_COPY_ON_WRITE"
1770 # ifdef PERL_USE_SAFE_PUTENV
1771 " PERL_USE_SAFE_PUTENV"
1773 # ifdef PL_OP_SLAB_ALLOC
1776 # ifdef SPRINTF_RETURNS_STRLEN
1777 " SPRINTF_RETURNS_STRLEN"
1779 # ifdef THREADS_HAVE_PIDS
1780 " THREADS_HAVE_PIDS"
1782 # ifdef USE_5005THREADS
1785 # ifdef USE_64_BIT_ALL
1788 # ifdef USE_64_BIT_INT
1791 # ifdef USE_ITHREADS
1794 # ifdef USE_LARGE_FILES
1797 # ifdef USE_LONG_DOUBLE
1803 # ifdef USE_REENTRANT_API
1804 " USE_REENTRANT_API"
1809 # ifdef USE_SITECUSTOMIZE
1810 " USE_SITECUSTOMIZE"
1817 while (SvCUR(opts_prog) > opts+76) {
1818 /* find last space after "options: " and before col 76
1822 char *pv = SvPV_nolen(opts_prog);
1823 const char c = pv[opts+76];
1825 space = strrchr(pv+opts+26, ' ');
1827 if (!space) break; /* "Can't happen" */
1829 /* break the line before that space */
1832 sv_insert(opts_prog, opts, 0,
1836 sv_catpv(opts_prog,"\\n\",");
1838 #if defined(LOCAL_PATCH_COUNT)
1839 if (LOCAL_PATCH_COUNT > 0) {
1842 "\" Locally applied patches:\\n\",");
1843 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1844 if (PL_localpatches[i])
1845 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1846 0, PL_localpatches[i], 0);
1850 Perl_sv_catpvf(aTHX_ opts_prog,
1851 "\" Built under %s\\n\"",OSNAME);
1854 Perl_sv_catpvf(aTHX_ opts_prog,
1855 ",\" Compiled at %s %s\\n\"",__DATE__,
1858 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1862 sv_catpv(opts_prog, "; $\"=\"\\n \"; "
1863 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1864 "sort grep {/^PERL/} keys %ENV; ");
1867 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1870 "print \" \\%ENV:\\n @env\\n\" if @env;"
1871 "print \" \\@INC:\\n @INC\\n\";");
1875 opts_prog = Perl_newSVpvf(aTHX_
1876 "Config::config_vars(qw%c%s%c)",
1880 av_push(PL_preambleav, opts_prog);
1881 /* don't look for script or read stdin */
1882 scriptname = BIT_BUCKET;
1886 PL_doextract = TRUE;
1894 if (!*++s || isSPACE(*s)) {
1898 /* catch use of gnu style long options */
1899 if (strEQ(s, "version")) {
1903 if (strEQ(s, "help")) {
1910 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1916 #ifndef SECURE_INTERNAL_GETENV
1919 (s = PerlEnv_getenv("PERL5OPT")))
1921 const char *popt = s;
1924 if (*s == '-' && *(s+1) == 'T') {
1925 CHECK_MALLOC_TOO_LATE_FOR('T');
1927 PL_taint_warn = FALSE;
1930 char *popt_copy = Nullch;
1943 if (!strchr("CDIMUdmtwA", *s))
1944 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1948 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1949 s = popt_copy + (s - popt);
1950 d = popt_copy + (d - popt);
1957 if( !PL_tainting ) {
1958 PL_taint_warn = TRUE;
1968 #ifdef USE_SITECUSTOMIZE
1971 PL_preambleav = newAV();
1972 av_unshift(PL_preambleav, 1);
1973 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1977 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1978 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1982 scriptname = argv[0];
1985 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1987 else if (scriptname == Nullch) {
1989 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1995 /* Set $^X early so that it can be used for relocatable paths in @INC */
1996 assert (!PL_tainted);
1998 S_set_caret_X(aTHX);
2002 open_script(scriptname,dosearch,sv);
2004 validate_suid(validarg, scriptname);
2007 #if defined(SIGCHLD) || defined(SIGCLD)
2010 # define SIGCHLD SIGCLD
2012 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2013 if (sigstate == (Sighandler_t) SIG_IGN) {
2014 if (ckWARN(WARN_SIGNAL))
2015 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2016 "Can't ignore signal CHLD, forcing to default");
2017 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2023 #ifdef MACOS_TRADITIONAL
2024 if (PL_doextract || gMacPerl_AlwaysExtract) {
2029 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2030 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2034 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
2035 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2036 CvUNIQUE_on(PL_compcv);
2038 CvPADLIST(PL_compcv) = pad_new(0);
2039 #ifdef USE_5005THREADS
2040 CvOWNER(PL_compcv) = 0;
2041 Newx(CvMUTEXP(PL_compcv), 1, perl_mutex);
2042 MUTEX_INIT(CvMUTEXP(PL_compcv));
2043 #endif /* USE_5005THREADS */
2046 boot_core_UNIVERSAL();
2047 boot_core_xsutils();
2050 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2052 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
2058 # ifdef HAS_SOCKS5_INIT
2059 socks5_init(argv[0]);
2065 init_predump_symbols();
2066 /* init_postdump_symbols not currently designed to be called */
2067 /* more than once (ENV isn't cleared first, for example) */
2068 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2070 init_postdump_symbols(argc,argv,env);
2072 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2073 * or explicitly in some platforms.
2074 * locale.c:Perl_init_i18nl10n() if the environment
2075 * look like the user wants to use UTF-8. */
2076 #if defined(__SYMBIAN32__)
2077 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2080 /* Requires init_predump_symbols(). */
2081 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2086 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2087 * and the default open disciplines. */
2088 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2089 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2091 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2092 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2093 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2095 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2096 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2097 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2099 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2100 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2101 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
2102 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2103 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2106 sv_setpvn(sv, ":utf8\0:utf8", 11);
2108 sv_setpvn(sv, ":utf8\0", 6);
2111 sv_setpvn(sv, "\0:utf8", 6);
2117 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2118 if (strEQ(s, "unsafe"))
2119 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2120 else if (strEQ(s, "safe"))
2121 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2123 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2128 /* now parse the script */
2130 SETERRNO(0,SS_NORMAL);
2132 #ifdef MACOS_TRADITIONAL
2133 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2135 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2137 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2138 MacPerl_MPWFileName(PL_origfilename));
2142 if (yyparse() || PL_error_count) {
2144 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2146 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2151 CopLINE_set(PL_curcop, 0);
2152 PL_curstash = PL_defstash;
2153 PL_preprocess = FALSE;
2155 SvREFCNT_dec(PL_e_script);
2156 PL_e_script = Nullsv;
2163 SAVECOPFILE(PL_curcop);
2164 SAVECOPLINE(PL_curcop);
2165 gv_check(PL_defstash);
2172 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2173 dump_mstats("after compilation:");
2182 =for apidoc perl_run
2184 Tells a Perl interpreter to run. See L<perlembed>.
2196 PERL_UNUSED_ARG(my_perl);
2198 oldscope = PL_scopestack_ix;
2206 cxstack_ix = -1; /* start context stack again */
2208 case 0: /* normal completion */
2212 case 2: /* my_exit() */
2213 while (PL_scopestack_ix > oldscope)
2216 PL_curstash = PL_defstash;
2217 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2218 PL_endav && !PL_minus_c)
2219 call_list(oldscope, PL_endav);
2221 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2222 dump_mstats("after execution: ");
2228 POPSTACK_TO(PL_mainstack);
2231 PerlIO_printf(Perl_error_log, "panic: restartop\n");
2243 S_run_body(pTHX_ I32 oldscope)
2245 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2246 PL_sawampersand ? "Enabling" : "Omitting"));
2248 if (!PL_restartop) {
2249 DEBUG_x(dump_all());
2252 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2254 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2258 #ifdef MACOS_TRADITIONAL
2259 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2260 (gMacPerl_ErrorFormat ? "# " : ""),
2261 MacPerl_MPWFileName(PL_origfilename));
2263 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2267 if (PERLDB_SINGLE && PL_DBsingle)
2268 sv_setiv(PL_DBsingle, 1);
2270 call_list(oldscope, PL_initav);
2276 PL_op = PL_restartop;
2280 else if (PL_main_start) {
2281 CvDEPTH(PL_main_cv) = 1;
2282 PL_op = PL_main_start;
2290 =head1 SV Manipulation Functions
2292 =for apidoc p||get_sv
2294 Returns the SV of the specified Perl scalar. If C<create> is set and the
2295 Perl variable does not exist then it will be created. If C<create> is not
2296 set and the variable does not exist then NULL is returned.
2302 Perl_get_sv(pTHX_ const char *name, I32 create)
2305 #ifdef USE_5005THREADS
2306 if (name[1] == '\0' && !isALPHA(name[0])) {
2307 PADOFFSET tmp = find_threadsv(name);
2308 if (tmp != NOT_IN_PAD)
2309 return THREADSV(tmp);
2311 #endif /* USE_5005THREADS */
2312 gv = gv_fetchpv(name, create, SVt_PV);
2319 =head1 Array Manipulation Functions
2321 =for apidoc p||get_av
2323 Returns the AV of the specified Perl array. If C<create> is set and the
2324 Perl variable does not exist then it will be created. If C<create> is not
2325 set and the variable does not exist then NULL is returned.
2331 Perl_get_av(pTHX_ const char *name, I32 create)
2333 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
2342 =head1 Hash Manipulation Functions
2344 =for apidoc p||get_hv
2346 Returns the HV of the specified Perl hash. If C<create> is set and the
2347 Perl variable does not exist then it will be created. If C<create> is not
2348 set and the variable does not exist then NULL is returned.
2354 Perl_get_hv(pTHX_ const char *name, I32 create)
2356 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
2365 =head1 CV Manipulation Functions
2367 =for apidoc p||get_cv
2369 Returns the CV of the specified Perl subroutine. If C<create> is set and
2370 the Perl subroutine does not exist then it will be declared (which has the
2371 same effect as saying C<sub name;>). If C<create> is not set and the
2372 subroutine does not exist then NULL is returned.
2378 Perl_get_cv(pTHX_ const char *name, I32 create)
2380 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
2381 /* XXX unsafe for threads if eval_owner isn't held */
2382 /* XXX this is probably not what they think they're getting.
2383 * It has the same effect as "sub name;", i.e. just a forward
2385 if (create && !GvCVu(gv))
2386 return newSUB(start_subparse(FALSE, 0),
2387 newSVOP(OP_CONST, 0, newSVpv(name,0)),
2395 /* Be sure to refetch the stack pointer after calling these routines. */
2399 =head1 Callback Functions
2401 =for apidoc p||call_argv
2403 Performs a callback to the specified Perl sub. See L<perlcall>.
2409 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2411 /* See G_* flags in cop.h */
2412 /* null terminated arg list */
2419 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
2424 return call_pv(sub_name, flags);
2428 =for apidoc p||call_pv
2430 Performs a callback to the specified Perl sub. See L<perlcall>.
2436 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2437 /* name of the subroutine */
2438 /* See G_* flags in cop.h */
2440 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
2444 =for apidoc p||call_method
2446 Performs a callback to the specified Perl method. The blessed object must
2447 be on the stack. See L<perlcall>.
2453 Perl_call_method(pTHX_ const char *methname, I32 flags)
2454 /* name of the subroutine */
2455 /* See G_* flags in cop.h */
2457 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
2460 /* May be called with any of a CV, a GV, or an SV containing the name. */
2462 =for apidoc p||call_sv
2464 Performs a callback to the Perl sub whose name is in the SV. See
2471 Perl_call_sv(pTHX_ SV *sv, I32 flags)
2472 /* See G_* flags in cop.h */
2475 LOGOP myop; /* fake syntax tree node */
2478 volatile I32 retval = 0;
2480 bool oldcatch = CATCH_GET;
2485 if (flags & G_DISCARD) {
2490 Zero(&myop, 1, LOGOP);
2491 myop.op_next = Nullop;
2492 if (!(flags & G_NOARGS))
2493 myop.op_flags |= OPf_STACKED;
2494 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2495 (flags & G_ARRAY) ? OPf_WANT_LIST :
2500 EXTEND(PL_stack_sp, 1);
2501 *++PL_stack_sp = sv;
2503 oldscope = PL_scopestack_ix;
2505 if (PERLDB_SUB && PL_curstash != PL_debstash
2506 /* Handle first BEGIN of -d. */
2507 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2508 /* Try harder, since this may have been a sighandler, thus
2509 * curstash may be meaningless. */
2510 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
2511 && !(flags & G_NODEBUG))
2512 PL_op->op_private |= OPpENTERSUB_DB;
2514 if (flags & G_METHOD) {
2515 Zero(&method_op, 1, UNOP);
2516 method_op.op_next = PL_op;
2517 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2518 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2519 PL_op = (OP*)&method_op;
2522 if (!(flags & G_EVAL)) {
2524 call_body((OP*)&myop, FALSE);
2525 retval = PL_stack_sp - (PL_stack_base + oldmark);
2526 CATCH_SET(oldcatch);
2529 myop.op_other = (OP*)&myop;
2531 /* we're trying to emulate pp_entertry() here */
2533 register PERL_CONTEXT *cx;
2534 const I32 gimme = GIMME_V;
2539 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
2541 PL_eval_root = PL_op; /* Only needed so that goto works right. */
2543 PL_in_eval = EVAL_INEVAL;
2544 if (flags & G_KEEPERR)
2545 PL_in_eval |= EVAL_KEEPERR;
2547 sv_setpvn(ERRSV,"",0);
2555 call_body((OP*)&myop, FALSE);
2556 retval = PL_stack_sp - (PL_stack_base + oldmark);
2557 if (!(flags & G_KEEPERR))
2558 sv_setpvn(ERRSV,"",0);
2564 /* my_exit() was called */
2565 PL_curstash = PL_defstash;
2568 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2569 Perl_croak(aTHX_ "Callback called exit");
2574 PL_op = PL_restartop;
2578 PL_stack_sp = PL_stack_base + oldmark;
2579 if (flags & G_ARRAY)
2583 *++PL_stack_sp = &PL_sv_undef;
2588 if (PL_scopestack_ix > oldscope) {
2592 register PERL_CONTEXT *cx;
2599 PERL_UNUSED_VAR(newsp);
2600 PERL_UNUSED_VAR(gimme);
2601 PERL_UNUSED_VAR(optype);
2606 if (flags & G_DISCARD) {
2607 PL_stack_sp = PL_stack_base + oldmark;
2617 S_call_body(pTHX_ const OP *myop, bool is_eval)
2619 if (PL_op == myop) {
2621 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
2623 PL_op = Perl_pp_entersub(aTHX); /* this does */
2629 /* Eval a string. The G_EVAL flag is always assumed. */
2632 =for apidoc p||eval_sv
2634 Tells Perl to C<eval> the string in the SV.
2640 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2642 /* See G_* flags in cop.h */
2645 UNOP myop; /* fake syntax tree node */
2646 volatile I32 oldmark = SP - PL_stack_base;
2647 volatile I32 retval = 0;
2652 if (flags & G_DISCARD) {
2659 Zero(PL_op, 1, UNOP);
2660 EXTEND(PL_stack_sp, 1);
2661 *++PL_stack_sp = sv;
2663 if (!(flags & G_NOARGS))
2664 myop.op_flags = OPf_STACKED;
2665 myop.op_next = Nullop;
2666 myop.op_type = OP_ENTEREVAL;
2667 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2668 (flags & G_ARRAY) ? OPf_WANT_LIST :
2670 if (flags & G_KEEPERR)
2671 myop.op_flags |= OPf_SPECIAL;
2673 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2674 * before a PUSHEVAL, which corrupts the stack after a croak */
2675 TAINT_PROPER("eval_sv()");
2681 call_body((OP*)&myop,TRUE);
2682 retval = PL_stack_sp - (PL_stack_base + oldmark);
2683 if (!(flags & G_KEEPERR))
2684 sv_setpvn(ERRSV,"",0);
2690 /* my_exit() was called */
2691 PL_curstash = PL_defstash;
2694 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2695 Perl_croak(aTHX_ "Callback called exit");
2700 PL_op = PL_restartop;
2704 PL_stack_sp = PL_stack_base + oldmark;
2705 if (flags & G_ARRAY)
2709 *++PL_stack_sp = &PL_sv_undef;
2715 if (flags & G_DISCARD) {
2716 PL_stack_sp = PL_stack_base + oldmark;
2726 =for apidoc p||eval_pv
2728 Tells Perl to C<eval> the given string and return an SV* result.
2734 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2737 SV* sv = newSVpv(p, 0);
2739 eval_sv(sv, G_SCALAR);
2746 if (croak_on_error && SvTRUE(ERRSV)) {
2747 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2753 /* Require a module. */
2756 =head1 Embedding Functions
2758 =for apidoc p||require_pv
2760 Tells Perl to C<require> the file named by the string argument. It is
2761 analogous to the Perl code C<eval "require '$file'">. It's even
2762 implemented that way; consider using load_module instead.
2767 Perl_require_pv(pTHX_ const char *pv)
2771 PUSHSTACKi(PERLSI_REQUIRE);
2773 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2774 eval_sv(sv_2mortal(sv), G_DISCARD);
2780 Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
2784 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2785 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2789 S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
2791 /* This message really ought to be max 23 lines.
2792 * Removed -h because the user already knows that option. Others? */
2794 static const char * const usage_msg[] = {
2795 "-0[octal] specify record separator (\\0, if no argument)",
2796 "-A[mod][=pattern] activate all/given assertions",
2797 "-a autosplit mode with -n or -p (splits $_ into @F)",
2798 "-C[number/list] enables the listed Unicode features",
2799 "-c check syntax only (runs BEGIN and CHECK blocks)",
2800 "-d[:debugger] run program under debugger",
2801 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2802 "-e program one line of program (several -e's allowed, omit programfile)",
2803 "-f don't do $sitelib/sitecustomize.pl at startup",
2804 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2805 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2806 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2807 "-l[octal] enable line ending processing, specifies line terminator",
2808 "-[mM][-]module execute \"use/no module...\" before executing program",
2809 "-n assume \"while (<>) { ... }\" loop around program",
2810 "-p assume loop like -n but print line also, like sed",
2811 "-P run program through C preprocessor before compilation",
2812 "-s enable rudimentary parsing for switches after programfile",
2813 "-S look for programfile using PATH environment variable",
2814 "-t enable tainting warnings",
2815 "-T enable tainting checks",
2816 "-u dump core after parsing program",
2817 "-U allow unsafe operations",
2818 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2819 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2820 "-w enable many useful warnings (RECOMMENDED)",
2821 "-W enable all warnings",
2822 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2823 "-X disable all warnings",
2827 const char * const *p = usage_msg;
2829 PerlIO_printf(PerlIO_stdout(),
2830 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2833 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2836 /* convert a string of -D options (or digits) into an int.
2837 * sets *s to point to the char after the options */
2841 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2843 static const char * const usage_msgd[] = {
2844 " Debugging flag values: (see also -d)",
2845 " p Tokenizing and parsing (with v, displays parse stack)",
2846 " s Stack snapshots (with v, displays all stacks)",
2847 " l Context (loop) stack processing",
2848 " t Trace execution",
2849 " o Method and overloading resolution",
2850 " c String/numeric conversions",
2851 " P Print profiling info, preprocessor command for -P, source file input state",
2852 " m Memory allocation",
2853 " f Format processing",
2854 " r Regular expression parsing and execution",
2855 " x Syntax tree dump",
2856 " u Tainting checks",
2857 " H Hash dump -- usurps values()",
2858 " X Scratchpad allocation",
2860 " S Thread synchronization",
2862 " R Include reference counts of dumped variables (eg when using -Ds)",
2863 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2864 " v Verbose: use in conjunction with other flags",
2866 " A Consistency checks on internal structures",
2867 " q quiet - currently only suppresses the 'EXECUTING' message",
2872 /* if adding extra options, remember to update DEBUG_MASK */
2873 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
2875 for (; isALNUM(**s); (*s)++) {
2876 const char *d = strchr(debopts,**s);
2878 i |= 1 << (d - debopts);
2879 else if (ckWARN_d(WARN_DEBUGGING))
2880 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2881 "invalid option -D%c, use -D'' to see choices\n", **s);
2884 else if (isDIGIT(**s)) {
2886 for (; isALNUM(**s); (*s)++) ;
2888 else if (givehelp) {
2889 const char *const *p = usage_msgd;
2890 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2893 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2894 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2895 "-Dp not implemented on this platform\n");
2901 /* This routine handles any switches that can be given during run */
2904 Perl_moreswitches(pTHX_ char *s)
2915 SvREFCNT_dec(PL_rs);
2916 if (s[1] == 'x' && s[2]) {
2917 const char *e = s+=2;
2923 flags = PERL_SCAN_SILENT_ILLDIGIT;
2924 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2925 if (s + numlen < e) {
2926 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2930 PL_rs = newSVpvn("", 0);
2931 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
2932 tmps = (U8*)SvPVX(PL_rs);
2933 uvchr_to_utf8(tmps, rschar);
2934 SvCUR_set(PL_rs, UNISKIP(rschar));
2939 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2940 if (rschar & ~((U8)~0))
2941 PL_rs = &PL_sv_undef;
2942 else if (!rschar && numlen >= 2)
2943 PL_rs = newSVpvn("", 0);
2945 char ch = (char)rschar;
2946 PL_rs = newSVpvn(&ch, 1);
2949 sv_setsv(get_sv("/", TRUE), PL_rs);
2954 PL_unicode = parse_unicode_opts( (const char **)&s );
2959 while (*s && !isSPACE(*s)) ++s;
2961 PL_splitstr = savepv(PL_splitstr);
2975 /* -dt indicates to the debugger that threads will be used */
2976 if (*s == 't' && !isALNUM(s[1])) {
2978 my_setenv("PERL5DB_THREADED", "1");
2981 /* The following permits -d:Mod to accepts arguments following an =
2982 in the fashion that -MSome::Mod does. */
2983 if (*s == ':' || *s == '=') {
2986 sv = newSVpv("use Devel::", 0);
2988 /* We now allow -d:Module=Foo,Bar */
2989 while(isALNUM(*s) || *s==':') ++s;
2991 sv_catpv(sv, start);
2993 sv_catpvn(sv, start, s-start);
2994 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
2997 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3000 PL_perldb = PERLDB_ALL;
3009 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3010 #else /* !DEBUGGING */
3011 if (ckWARN_d(WARN_DEBUGGING))
3012 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3013 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3014 for (s++; isALNUM(*s); s++) ;
3019 usage(PL_origargv[0]);
3022 Safefree(PL_inplace);
3023 #if defined(__CYGWIN__) /* do backup extension automagically */
3024 if (*(s+1) == '\0') {
3025 PL_inplace = savepv(".bak");
3028 #endif /* __CYGWIN__ */
3029 PL_inplace = savepv(s+1);
3030 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3034 if (*s == '-') /* Additional switches on #! line. */
3038 case 'I': /* -I handled both here and in parse_body() */
3041 while (*s && isSPACE(*s))
3046 /* ignore trailing spaces (possibly followed by other switches) */
3048 for (e = p; *e && !isSPACE(*e); e++) ;
3052 } while (*p && *p != '-');
3053 e = savepvn(s, e-s);
3054 incpush(e, TRUE, TRUE, FALSE, FALSE);
3061 Perl_croak(aTHX_ "No directory specified for -I");
3067 SvREFCNT_dec(PL_ors_sv);
3073 PL_ors_sv = newSVpvn("\n",1);
3074 numlen = 3 + (*s == '0');
3075 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3079 if (RsPARA(PL_rs)) {
3080 PL_ors_sv = newSVpvn("\n\n",2);
3083 PL_ors_sv = newSVsv(PL_rs);
3090 PL_preambleav = newAV();
3093 char * const start = s;
3094 SV * const sv = newSVpv("use assertions::activate", 24);
3095 while(isALNUM(*s) || *s == ':') ++s;
3097 sv_catpvn(sv, "::", 2);
3098 sv_catpvn(sv, start, s-start);
3101 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
3104 else if (*s != '\0') {
3105 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
3107 av_push(PL_preambleav, sv);
3111 forbid_setid("-M"); /* XXX ? */
3114 forbid_setid("-m"); /* XXX ? */
3118 const char *use = "use ";
3119 /* -M-foo == 'no foo' */
3120 /* Leading space on " no " is deliberate, to make both
3121 possibilities the same length. */
3122 if (*s == '-') { use = " no "; ++s; }
3123 sv = newSVpvn(use,4);
3125 /* We allow -M'Module qw(Foo Bar)' */
3126 while(isALNUM(*s) || *s==':') ++s;
3128 sv_catpv(sv, start);
3129 if (*(start-1) == 'm') {
3131 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3132 sv_catpv( sv, " ()");
3136 Perl_croak(aTHX_ "Module name required with -%c option",
3138 sv_catpvn(sv, start, s-start);
3139 sv_catpv(sv, " split(/,/,q");
3140 sv_catpvn(sv, "\0)", 1); /* Use NUL as q//-delimiter. */
3142 sv_catpvn(sv, "\0)", 2);
3146 PL_preambleav = newAV();
3147 av_push(PL_preambleav, sv);
3150 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
3162 PL_doswitches = TRUE;
3176 #ifdef MACOS_TRADITIONAL
3177 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3179 PL_do_undump = TRUE;
3187 if (!sv_derived_from(PL_patchlevel, "version"))
3188 (void *)upg_version(PL_patchlevel);
3190 PerlIO_printf(PerlIO_stdout(),
3191 Perl_form(aTHX_ "\nThis is perl, %"SVf" built for %s",
3192 vstringify(PL_patchlevel),
3195 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3196 PerlIO_printf(PerlIO_stdout(),
3197 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3198 vstringify(PL_patchlevel)));
3199 PerlIO_printf(PerlIO_stdout(),
3200 Perl_form(aTHX_ " built under %s at %s %s\n",
3201 OSNAME, __DATE__, __TIME__));
3202 PerlIO_printf(PerlIO_stdout(),
3203 Perl_form(aTHX_ " OS Specific Release: %s\n",
3207 #if defined(LOCAL_PATCH_COUNT)
3208 if (LOCAL_PATCH_COUNT > 0)
3209 PerlIO_printf(PerlIO_stdout(),
3210 "\n(with %d registered patch%s, "
3211 "see perl -V for more detail)",
3212 (int)LOCAL_PATCH_COUNT,
3213 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3216 PerlIO_printf(PerlIO_stdout(),
3217 "\n\nCopyright 1987-2005, Larry Wall\n");
3218 #ifdef MACOS_TRADITIONAL
3219 PerlIO_printf(PerlIO_stdout(),
3220 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
3221 "maintained by Chris Nandor\n");
3224 PerlIO_printf(PerlIO_stdout(),
3225 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3228 PerlIO_printf(PerlIO_stdout(),
3229 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3230 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3233 PerlIO_printf(PerlIO_stdout(),
3234 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3235 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3238 PerlIO_printf(PerlIO_stdout(),
3239 "atariST series port, ++jrb bammi@cadence.com\n");
3242 PerlIO_printf(PerlIO_stdout(),
3243 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3246 PerlIO_printf(PerlIO_stdout(),
3247 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3250 PerlIO_printf(PerlIO_stdout(),
3251 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3254 PerlIO_printf(PerlIO_stdout(),
3255 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3258 PerlIO_printf(PerlIO_stdout(),
3259 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3262 PerlIO_printf(PerlIO_stdout(),
3263 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3266 PerlIO_printf(PerlIO_stdout(),
3267 "MiNT port by Guido Flohr, 1997-1999\n");
3270 PerlIO_printf(PerlIO_stdout(),
3271 "EPOC port by Olaf Flebbe, 1999-2002\n");
3274 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3275 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3278 #ifdef __SYMBIAN32__
3279 PerlIO_printf(PerlIO_stdout(),
3280 "Symbian port by Nokia, 2004-2005\n");
3282 #ifdef BINARY_BUILD_NOTICE
3283 BINARY_BUILD_NOTICE;
3285 PerlIO_printf(PerlIO_stdout(),
3287 Perl may be copied only under the terms of either the Artistic License or the\n\
3288 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3289 Complete documentation for Perl, including FAQ lists, should be found on\n\
3290 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3291 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3294 if (! (PL_dowarn & G_WARN_ALL_MASK))
3295 PL_dowarn |= G_WARN_ON;
3299 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3300 if (!specialWARN(PL_compiling.cop_warnings))
3301 SvREFCNT_dec(PL_compiling.cop_warnings);
3302 PL_compiling.cop_warnings = pWARN_ALL ;
3306 PL_dowarn = G_WARN_ALL_OFF;
3307 if (!specialWARN(PL_compiling.cop_warnings))
3308 SvREFCNT_dec(PL_compiling.cop_warnings);
3309 PL_compiling.cop_warnings = pWARN_NONE ;
3314 if (s[1] == '-') /* Additional switches on #! line. */
3319 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3325 #ifdef ALTERNATE_SHEBANG
3326 case 'S': /* OS/2 needs -S on "extproc" line. */
3334 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3339 /* compliments of Tom Christiansen */
3341 /* unexec() can be found in the Gnu emacs distribution */
3342 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3345 Perl_my_unexec(pTHX)
3353 prog = newSVpv(BIN_EXP, 0);
3354 sv_catpv(prog, "/perl");
3355 file = newSVpv(PL_origfilename, 0);
3356 sv_catpv(file, ".perldump");
3358 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3359 /* unexec prints msg to stderr in case of failure */
3360 PerlProc_exit(status);
3363 # include <lib$routines.h>
3364 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3366 ABORT(); /* for use with undump */
3371 /* initialize curinterp */
3377 # define PERLVAR(var,type)
3378 # define PERLVARA(var,n,type)
3379 # if defined(PERL_IMPLICIT_CONTEXT)
3380 # if defined(USE_5005THREADS)
3381 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3382 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
3383 # else /* !USE_5005THREADS */
3384 # define PERLVARI(var,type,init) aTHX->var = init;
3385 # define PERLVARIC(var,type,init) aTHX->var = init;
3386 # endif /* USE_5005THREADS */
3388 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3389 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
3391 # include "intrpvar.h"
3392 # ifndef USE_5005THREADS
3393 # include "thrdvar.h"
3400 # define PERLVAR(var,type)
3401 # define PERLVARA(var,n,type)
3402 # define PERLVARI(var,type,init) PL_##var = init;
3403 # define PERLVARIC(var,type,init) PL_##var = init;
3404 # include "intrpvar.h"
3405 # ifndef USE_5005THREADS
3406 # include "thrdvar.h"
3417 S_init_main_stash(pTHX)
3421 PL_curstash = PL_defstash = newHV();
3422 PL_curstname = newSVpvn("main",4);
3423 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
3424 SvREFCNT_dec(GvHV(gv));
3425 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
3427 hv_name_set(PL_defstash, "main", 4, 0);
3428 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
3429 GvMULTI_on(PL_incgv);
3430 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
3431 GvMULTI_on(PL_hintgv);
3432 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
3433 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
3434 GvMULTI_on(PL_errgv);
3435 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
3436 GvMULTI_on(PL_replgv);
3437 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3438 #ifdef PERL_DONT_CREATE_GVSV
3441 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3442 sv_setpvn(ERRSV, "", 0);
3443 PL_curstash = PL_defstash;
3444 CopSTASH_set(&PL_compiling, PL_defstash);
3445 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3446 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
3447 /* We must init $/ before switches are processed. */
3448 sv_setpvn(get_sv("/", TRUE), "\n", 1);
3451 /* PSz 18 Nov 03 fdscript now global but do not change prototype */
3453 S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv)
3458 const char *cpp_discard_flag;
3467 PL_origfilename = savepvn("-e", 2);
3470 /* if find_script() returns, it returns a malloc()-ed value */
3471 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3473 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3474 const char *s = scriptname + 8;
3475 PL_fdscript = atoi(s);
3480 * Tell apart "normal" usage of fdscript, e.g.
3481 * with bash on FreeBSD:
3482 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3483 * from usage in suidperl.
3484 * Does any "normal" usage leave garbage after the number???
3485 * Is it a mistake to use a similar /dev/fd/ construct for
3490 * Be supersafe and do some sanity-checks.
3491 * Still, can we be sure we got the right thing?
3494 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3497 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3499 scriptname = savepv(s + 1);
3500 Safefree(PL_origfilename);
3501 PL_origfilename = (char *)scriptname;
3506 CopFILE_free(PL_curcop);
3507 CopFILE_set(PL_curcop, PL_origfilename);
3508 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3509 scriptname = (char *)"";
3510 if (PL_fdscript >= 0) {
3511 PL_rsfp = PerlIO_fdopen(PL_fdscript,PERL_SCRIPT_MODE);
3512 # if defined(HAS_FCNTL) && defined(F_SETFD)
3514 /* ensure close-on-exec */
3515 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3520 Perl_croak(aTHX_ "sperl needs fd script\n"
3521 "You should not call sperl directly; do you need to "
3522 "change a #! line\nfrom sperl to perl?\n");
3525 * Do not open (or do other fancy stuff) while setuid.
3526 * Perl does the open, and hands script to suidperl on a fd;
3527 * suidperl only does some checks, sets up UIDs and re-execs
3528 * perl with that fd as it has always done.
3531 if (PL_suidscript != 1) {
3532 Perl_croak(aTHX_ "suidperl needs (suid) fd script\n");
3535 else if (PL_preprocess) {
3536 const char *cpp_cfg = CPPSTDIN;
3537 SV *cpp = newSVpvn("",0);
3538 SV *cmd = NEWSV(0,0);
3540 if (cpp_cfg[0] == 0) /* PERL_MICRO? */
3541 Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined");
3542 if (strEQ(cpp_cfg, "cppstdin"))
3543 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
3544 sv_catpv(cpp, cpp_cfg);
3547 sv_catpvn(sv, "-I", 2);
3548 sv_catpv(sv,PRIVLIB_EXP);
3551 DEBUG_P(PerlIO_printf(Perl_debug_log,
3552 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
3553 scriptname, SvPVX_const (cpp), SvPVX_const (sv),
3556 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
3563 cpp_discard_flag = "";
3565 cpp_discard_flag = "-C";
3569 perl = os2_execname(aTHX);
3571 perl = PL_origargv[0];
3575 /* This strips off Perl comments which might interfere with
3576 the C pre-processor, including #!. #line directives are
3577 deliberately stripped to avoid confusion with Perl's version
3578 of #line. FWP played some golf with it so it will fit
3579 into VMS's 255 character buffer.
3582 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
3584 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
3586 Perl_sv_setpvf(aTHX_ cmd, "\
3587 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
3588 perl, quote, code, quote, scriptname, cpp,
3589 cpp_discard_flag, sv, CPPMINUS);
3591 PL_doextract = FALSE;
3593 DEBUG_P(PerlIO_printf(Perl_debug_log,
3594 "PL_preprocess: cmd=\"%s\"\n",
3597 PL_rsfp = PerlProc_popen((char *)SvPVX_const(cmd), (char *)"r");
3601 else if (!*scriptname) {
3602 forbid_setid("program input from stdin");
3603 PL_rsfp = PerlIO_stdin();
3606 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3607 # if defined(HAS_FCNTL) && defined(F_SETFD)
3609 /* ensure close-on-exec */
3610 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3613 #endif /* IAMSUID */
3615 /* PSz 16 Sep 03 Keep neat error message */
3617 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3619 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3620 CopFILE(PL_curcop), Strerror(errno));
3625 * I_SYSSTATVFS HAS_FSTATVFS
3627 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3628 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3629 * here so that metaconfig picks them up. */
3633 S_fd_on_nosuid_fs(pTHX_ int fd)
3636 * We used to do this as "plain" user (after swapping UIDs with setreuid);
3637 * but is needed also on machines without setreuid.
3638 * Seems safe enough to run as root.
3640 int check_okay = 0; /* able to do all the required sys/libcalls */
3641 int on_nosuid = 0; /* the fd is on a nosuid fs */
3643 * Need to check noexec also: nosuid might not be set, the average
3644 * sysadmin would say that nosuid is irrelevant once he sets noexec.
3646 int on_noexec = 0; /* the fd is on a noexec fs */
3649 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
3650 * fstatvfs() is UNIX98.
3651 * fstatfs() is 4.3 BSD.
3652 * ustat()+getmnt() is pre-4.3 BSD.
3653 * getmntent() is O(number-of-mounted-filesystems) and can hang on
3654 * an irrelevant filesystem while trying to reach the right one.
3657 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
3659 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3660 defined(HAS_FSTATVFS)
3661 # define FD_ON_NOSUID_CHECK_OKAY
3662 struct statvfs stfs;
3664 check_okay = fstatvfs(fd, &stfs) == 0;
3665 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
3667 /* ST_NOEXEC certainly absent on AIX 5.1, and doesn't seem to be documented
3668 on platforms where it is present. */
3669 on_noexec = check_okay && (stfs.f_flag & ST_NOEXEC);
3671 # endif /* fstatvfs */
3673 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3674 defined(PERL_MOUNT_NOSUID) && \
3675 defined(PERL_MOUNT_NOEXEC) && \
3676 defined(HAS_FSTATFS) && \
3677 defined(HAS_STRUCT_STATFS) && \
3678 defined(HAS_STRUCT_STATFS_F_FLAGS)
3679 # define FD_ON_NOSUID_CHECK_OKAY
3682 check_okay = fstatfs(fd, &stfs) == 0;
3683 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
3684 on_noexec = check_okay && (stfs.f_flags & PERL_MOUNT_NOEXEC);
3685 # endif /* fstatfs */
3687 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3688 defined(PERL_MOUNT_NOSUID) && \
3689 defined(PERL_MOUNT_NOEXEC) && \
3690 defined(HAS_FSTAT) && \
3691 defined(HAS_USTAT) && \
3692 defined(HAS_GETMNT) && \
3693 defined(HAS_STRUCT_FS_DATA) && \
3695 # define FD_ON_NOSUID_CHECK_OKAY
3698 if (fstat(fd, &fdst) == 0) {
3700 if (ustat(fdst.st_dev, &us) == 0) {
3702 /* NOSTAT_ONE here because we're not examining fields which
3703 * vary between that case and STAT_ONE. */
3704 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
3705 size_t cmplen = sizeof(us.f_fname);
3706 if (sizeof(fsd.fd_req.path) < cmplen)
3707 cmplen = sizeof(fsd.fd_req.path);
3708 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
3709 fdst.st_dev == fsd.fd_req.dev) {
3711 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
3712 on_noexec = fsd.fd_req.flags & PERL_MOUNT_NOEXEC;
3717 # endif /* fstat+ustat+getmnt */
3719 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3720 defined(HAS_GETMNTENT) && \
3721 defined(HAS_HASMNTOPT) && \
3722 defined(MNTOPT_NOSUID) && \
3723 defined(MNTOPT_NOEXEC)
3724 # define FD_ON_NOSUID_CHECK_OKAY
3725 FILE *mtab = fopen("/etc/mtab", "r");
3726 struct mntent *entry;
3729 if (mtab && (fstat(fd, &stb) == 0)) {
3730 while (entry = getmntent(mtab)) {
3731 if (stat(entry->mnt_dir, &fsb) == 0
3732 && fsb.st_dev == stb.st_dev)
3734 /* found the filesystem */
3736 if (hasmntopt(entry, MNTOPT_NOSUID))
3738 if (hasmntopt(entry, MNTOPT_NOEXEC))
3741 } /* A single fs may well fail its stat(). */
3746 # endif /* getmntent+hasmntopt */
3749 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid/noexec", PL_origfilename);
3751 Perl_croak(aTHX_ "Setuid script \"%s\" on nosuid filesystem", PL_origfilename);
3753 Perl_croak(aTHX_ "Setuid script \"%s\" on noexec filesystem", PL_origfilename);
3754 return ((!check_okay) || on_nosuid || on_noexec);
3756 #endif /* IAMSUID */
3759 S_validate_suid(pTHX_ const char *validarg, const char *scriptname)
3764 #endif /* IAMSUID */
3766 /* do we need to emulate setuid on scripts? */
3768 /* This code is for those BSD systems that have setuid #! scripts disabled
3769 * in the kernel because of a security problem. Merely defining DOSUID
3770 * in perl will not fix that problem, but if you have disabled setuid
3771 * scripts in the kernel, this will attempt to emulate setuid and setgid
3772 * on scripts that have those now-otherwise-useless bits set. The setuid
3773 * root version must be called suidperl or sperlN.NNN. If regular perl
3774 * discovers that it has opened a setuid script, it calls suidperl with
3775 * the same argv that it had. If suidperl finds that the script it has
3776 * just opened is NOT setuid root, it sets the effective uid back to the
3777 * uid. We don't just make perl setuid root because that loses the
3778 * effective uid we had before invoking perl, if it was different from the
3781 * Description/comments above do not match current workings:
3782 * suidperl must be hardlinked to sperlN.NNN (that is what we exec);
3783 * suidperl called with script open and name changed to /dev/fd/N/X;
3784 * suidperl croaks if script is not setuid;
3785 * making perl setuid would be a huge security risk (and yes, that
3786 * would lose any euid we might have had).
3788 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3789 * be defined in suidperl only. suidperl must be setuid root. The
3790 * Configure script will set this up for you if you want it.
3796 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
3797 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
3798 if (PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3800 const char *linestr;
3803 if (PL_fdscript < 0 || PL_suidscript != 1)
3804 Perl_croak(aTHX_ "Need (suid) fdscript in suidperl\n"); /* We already checked this */
3806 * Since the script is opened by perl, not suidperl, some of these
3807 * checks are superfluous. Leaving them in probably does not lower
3811 * Do checks even for systems with no HAS_SETREUID.
3812 * We used to swap, then re-swap UIDs with
3814 if (setreuid(PL_euid,PL_uid) < 0
3815 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3816 Perl_croak(aTHX_ "Can't swap uid and euid");
3819 if (setreuid(PL_uid,PL_euid) < 0
3820 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3821 Perl_croak(aTHX_ "Can't reswap uid and euid");
3825 /* On this access check to make sure the directories are readable,
3826 * there is actually a small window that the user could use to make
3827 * filename point to an accessible directory. So there is a faint
3828 * chance that someone could execute a setuid script down in a
3829 * non-accessible directory. I don't know what to do about that.
3830 * But I don't think it's too important. The manual lies when
3831 * it says access() is useful in setuid programs.
3833 * So, access() is pretty useless... but not harmful... do anyway.
3835 if (PerlLIO_access(CopFILE(PL_curcop),1)) { /*double check*/
3836 Perl_croak(aTHX_ "Can't access() script\n");
3839 /* If we can swap euid and uid, then we can determine access rights
3840 * with a simple stat of the file, and then compare device and
3841 * inode to make sure we did stat() on the same file we opened.
3842 * Then we just have to make sure he or she can execute it.
3845 * As the script is opened by perl, not suidperl, we do not need to
3846 * care much about access rights.
3848 * The 'script changed' check is needed, or we can get lied to
3849 * about $0 with e.g.
3850 * suidperl /dev/fd/4//bin/x 4<setuidscript
3851 * Without HAS_SETREUID, is it safe to stat() as root?
3853 * Are there any operating systems that pass /dev/fd/xxx for setuid
3854 * scripts, as suggested/described in perlsec(1)? Surely they do not
3855 * pass the script name as we do, so the "script changed" test would
3856 * fail for them... but we never get here with
3857 * SETUID_SCRIPTS_ARE_SECURE_NOW defined.
3859 * This is one place where we must "lie" about return status: not
3860 * say if the stat() failed. We are doing this as root, and could
3861 * be tricked into reporting existence or not of files that the
3862 * "plain" user cannot even see.
3866 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0 ||
3867 tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3868 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3869 Perl_croak(aTHX_ "Setuid script changed\n");
3873 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3874 Perl_croak(aTHX_ "Real UID cannot exec script\n");
3877 * We used to do this check as the "plain" user (after swapping
3878 * UIDs). But the check for nosuid and noexec filesystem is needed,
3879 * and should be done even without HAS_SETREUID. (Maybe those
3880 * operating systems do not have such mount options anyway...)
3881 * Seems safe enough to do as root.
3883 #if !defined(NO_NOSUID_CHECK)
3884 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp))) {
3885 Perl_croak(aTHX_ "Setuid script on nosuid or noexec filesystem\n");
3888 #endif /* IAMSUID */
3890 if (!S_ISREG(PL_statbuf.st_mode)) {
3891 Perl_croak(aTHX_ "Setuid script not plain file\n");
3893 if (PL_statbuf.st_mode & S_IWOTH)
3894 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3895 PL_doswitches = FALSE; /* -s is insecure in suid */
3896 /* PSz 13 Nov 03 But -s was caught elsewhere ... so unsetting it here is useless(?!) */
3897 CopLINE_inc(PL_curcop);
3898 linestr = SvPV_nolen_const(PL_linestr);
3899 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3900 strnNE(linestr,"#!",2) ) /* required even on Sys V */
3901 Perl_croak(aTHX_ "No #! line");
3905 /* Sanity check on line length */
3906 if (strlen(s) < 1 || strlen(s) > 4000)
3907 Perl_croak(aTHX_ "Very long #! line");
3908 /* Allow more than a single space after #! */
3909 while (isSPACE(*s)) s++;
3910 /* Sanity check on buffer end */
3911 while ((*s) && !isSPACE(*s)) s++;
3912 for (s2 = s; (s2 > linestr &&
3913 (isDIGIT(s2[-1]) || s2[-1] == '.' || s2[-1] == '_'
3914 || s2[-1] == '-')); s2--) ;
3915 /* Sanity check on buffer start */
3916 if ( (s2-4 < linestr || strnNE(s2-4,"perl",4)) &&
3917 (s-9 < linestr || strnNE(s-9,"perl",4)) )
3918 Perl_croak(aTHX_ "Not a perl script");
3919 while (*s == ' ' || *s == '\t') s++;
3921 * #! arg must be what we saw above. They can invoke it by
3922 * mentioning suidperl explicitly, but they may not add any strange
3923 * arguments beyond what #! says if they do invoke suidperl that way.
3926 * The way validarg was set up, we rely on the kernel to start
3927 * scripts with argv[1] set to contain all #! line switches (the
3931 * Check that we got all the arguments listed in the #! line (not
3932 * just that there are no extraneous arguments). Might not matter
3933 * much, as switches from #! line seem to be acted upon (also), and
3934 * so may be checked and trapped in perl. But, security checks must
3935 * be done in suidperl and not deferred to perl. Note that suidperl
3936 * does not get around to parsing (and checking) the switches on
3937 * the #! line (but execs perl sooner).
3938 * Allow (require) a trailing newline (which may be of two
3939 * characters on some architectures?) (but no other trailing
3942 len = strlen(validarg);
3943 if (strEQ(validarg," PHOOEY ") ||
3944 strnNE(s,validarg,len) || !isSPACE(s[len]) ||
3945 !(strlen(s) == len+1 || (strlen(s) == len+2 && isSPACE(s[len+1]))))
3946 Perl_croak(aTHX_ "Args must match #! line");
3949 if (PL_fdscript < 0 &&
3950 PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3951 PL_euid == PL_statbuf.st_uid)
3953 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3954 FIX YOUR KERNEL, OR PUT A C WRAPPER AROUND THIS SCRIPT!\n");
3955 #endif /* IAMSUID */
3957 if (PL_fdscript < 0 &&
3958 PL_euid) { /* oops, we're not the setuid root perl */
3960 * When root runs a setuid script, we do not go through the same
3961 * steps of execing sperl and then perl with fd scripts, but
3962 * simply set up UIDs within the same perl invocation; so do
3963 * not have the same checks (on options, whatever) that we have
3964 * for plain users. No problem really: would have to be a script
3965 * that does not actually work for plain users; and if root is
3966 * foolish and can be persuaded to run such an unsafe script, he
3967 * might run also non-setuid ones, and deserves what he gets.
3969 * Or, we might drop the PL_euid check above (and rely just on
3970 * PL_fdscript to avoid loops), and do the execs
3976 * Pass fd script to suidperl.
3977 * Exec suidperl, substituting fd script for scriptname.
3978 * Pass script name as "subdir" of fd, which perl will grok;
3979 * in fact will use that to distinguish this from "normal"
3980 * usage, see comments above.
3982 PerlIO_rewind(PL_rsfp);
3983 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3984 /* PSz 27 Feb 04 Sanity checks on scriptname */
3985 if ((!scriptname) || (!*scriptname) ) {
3986 Perl_croak(aTHX_ "No setuid script name\n");
3988 if (*scriptname == '-') {
3989 Perl_croak(aTHX_ "Setuid script name may not begin with dash\n");
3990 /* Or we might confuse it with an option when replacing
3991 * name in argument list, below (though we do pointer, not
3992 * string, comparisons).
3995 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3996 if (!PL_origargv[which]) {
3997 Perl_croak(aTHX_ "Can't change argv to have fd script\n");
3999 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
4000 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
4001 #if defined(HAS_FCNTL) && defined(F_SETFD)
4002 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
4005 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
4006 (int)PERL_REVISION, (int)PERL_VERSION,
4007 (int)PERL_SUBVERSION), PL_origargv);
4009 #endif /* IAMSUID */
4010 Perl_croak(aTHX_ "Can't do setuid (cannot exec sperl)\n");
4013 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
4015 * This seems back to front: we try HAS_SETEGID first; if not available
4016 * then try HAS_SETREGID; as a last chance we try HAS_SETRESGID. May be OK
4017 * in the sense that we only want to set EGID; but are there any machines
4018 * with either of the latter, but not the former? Same with UID, later.
4021 (void)setegid(PL_statbuf.st_gid);
4024 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
4026 #ifdef HAS_SETRESGID
4027 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
4029 PerlProc_setgid(PL_statbuf.st_gid);
4033 if (PerlProc_getegid() != PL_statbuf.st_gid)
4034 Perl_croak(aTHX_ "Can't do setegid!\n");
4036 if (PL_statbuf.st_mode & S_ISUID) {
4037 if (PL_statbuf.st_uid != PL_euid)
4039 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
4042 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
4044 #ifdef HAS_SETRESUID
4045 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
4047 PerlProc_setuid(PL_statbuf.st_uid);
4051 if (PerlProc_geteuid() != PL_statbuf.st_uid)
4052 Perl_croak(aTHX_ "Can't do seteuid!\n");
4054 else if (PL_uid) { /* oops, mustn't run as root */
4056 (void)seteuid((Uid_t)PL_uid);
4059 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
4061 #ifdef HAS_SETRESUID
4062 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
4064 PerlProc_setuid((Uid_t)PL_uid);
4068 if (PerlProc_geteuid() != PL_uid)
4069 Perl_croak(aTHX_ "Can't do seteuid!\n");
4072 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
4073 Perl_croak(aTHX_ "Effective UID cannot exec script\n"); /* they can't do this */
4076 else if (PL_preprocess) /* PSz 13 Nov 03 Caught elsewhere, useless(?!) here */
4077 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
4078 else if (PL_fdscript < 0 || PL_suidscript != 1)
4079 /* PSz 13 Nov 03 Caught elsewhere, useless(?!) here */
4080 Perl_croak(aTHX_ "(suid) fdscript needed in suidperl\n");
4082 /* PSz 16 Sep 03 Keep neat error message */
4083 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
4086 /* We absolutely must clear out any saved ids here, so we */
4087 /* exec the real perl, substituting fd script for scriptname. */
4088 /* (We pass script name as "subdir" of fd, which perl will grok.) */
4090 * It might be thought that using setresgid and/or setresuid (changed to
4091 * set the saved IDs) above might obviate the need to exec, and we could
4092 * go on to "do the perl thing".
4094 * Is there such a thing as "saved GID", and is that set for setuid (but
4095 * not setgid) execution like suidperl? Without exec, it would not be
4096 * cleared for setuid (but not setgid) scripts (or might need a dummy
4099 * We need suidperl to do the exact same argument checking that perl
4100 * does. Thus it cannot be very small; while it could be significantly
4101 * smaller, it is safer (simpler?) to make it essentially the same
4102 * binary as perl (but they are not identical). - Maybe could defer that
4103 * check to the invoked perl, and suidperl be a tiny wrapper instead;
4104 * but prefer to do thorough checks in suidperl itself. Such deferral
4105 * would make suidperl security rely on perl, a design no-no.
4107 * Setuid things should be short and simple, thus easy to understand and
4108 * verify. They should do their "own thing", without influence by
4109 * attackers. It may help if their internal execution flow is fixed,
4110 * regardless of platform: it may be best to exec anyway.
4112 * Suidperl should at least be conceptually simple: a wrapper only,
4113 * never to do any real perl. Maybe we should put
4115 * Perl_croak(aTHX_ "Suidperl should never do real perl\n");
4117 * into the perly bits.
4119 PerlIO_rewind(PL_rsfp);
4120 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
4122 * Keep original arguments: suidperl already has fd script.
4124 /* for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ; */
4125 /* if (!PL_origargv[which]) { */
4126 /* errno = EPERM; */
4127 /* Perl_croak(aTHX_ "Permission denied\n"); */
4129 /* PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s", */
4130 /* PerlIO_fileno(PL_rsfp), PL_origargv[which])); */
4131 #if defined(HAS_FCNTL) && defined(F_SETFD)
4132 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
4135 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
4136 (int)PERL_REVISION, (int)PERL_VERSION,
4137 (int)PERL_SUBVERSION), PL_origargv);/* try again */
4139 Perl_croak(aTHX_ "Can't do setuid (suidperl cannot exec perl)\n");
4140 #endif /* IAMSUID */
4142 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
4143 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
4144 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
4145 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
4147 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
4150 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
4151 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
4152 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
4153 /* not set-id, must be wrapped */
4161 S_find_beginning(pTHX)
4164 register const char *s2;
4165 #ifdef MACOS_TRADITIONAL
4169 /* skip forward in input to the real script? */
4172 #ifdef MACOS_TRADITIONAL
4173 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
4175 while (PL_doextract || gMacPerl_AlwaysExtract) {
4176 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
4177 if (!gMacPerl_AlwaysExtract)
4178 Perl_croak(aTHX_ "No Perl script found in input\n");
4180 if (PL_doextract) /* require explicit override ? */
4181 if (!OverrideExtract(PL_origfilename))
4182 Perl_croak(aTHX_ "User aborted script\n");
4184 PL_doextract = FALSE;
4186 /* Pater peccavi, file does not have #! */
4187 PerlIO_rewind(PL_rsfp);
4192 while (PL_doextract) {
4193 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
4194 Perl_croak(aTHX_ "No Perl script found in input\n");
4197 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
4198 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
4199 PL_doextract = FALSE;
4200 while (*s && !(isSPACE (*s) || *s == '#')) s++;
4202 while (*s == ' ' || *s == '\t') s++;
4204 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
4205 || s2[-1] == '_') s2--;
4206 if (strnEQ(s2-4,"perl",4))
4207 while ((s = moreswitches(s)))
4210 #ifdef MACOS_TRADITIONAL
4211 /* We are always searching for the #!perl line in MacPerl,
4212 * so if we find it, still keep the line count correct
4213 * by counting lines we already skipped over
4215 for (; maclines > 0 ; maclines--)
4216 PerlIO_ungetc(PL_rsfp, '\n');
4220 /* gMacPerl_AlwaysExtract is false in MPW tool */
4221 } else if (gMacPerl_AlwaysExtract) {
4232 PL_uid = PerlProc_getuid();
4233 PL_euid = PerlProc_geteuid();
4234 PL_gid = PerlProc_getgid();
4235 PL_egid = PerlProc_getegid();
4237 PL_uid |= PL_gid << 16;
4238 PL_euid |= PL_egid << 16;
4240 /* Should not happen: */
4241 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
4242 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
4245 * Should go by suidscript, not uid!=euid: why disallow
4246 * system("ls") in scripts run from setuid things?
4247 * Or, is this run before we check arguments and set suidscript?
4248 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
4249 * (We never have suidscript, can we be sure to have fdscript?)
4250 * Or must then go by UID checks? See comments in forbid_setid also.
4254 /* This is used very early in the lifetime of the program,
4255 * before even the options are parsed, so PL_tainting has
4256 * not been initialized properly. */
4258 Perl_doing_taint(int argc, char *argv[], char *envp[])
4260 #ifndef PERL_IMPLICIT_SYS
4261 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
4262 * before we have an interpreter-- and the whole point of this
4263 * function is to be called at such an early stage. If you are on
4264 * a system with PERL_IMPLICIT_SYS but you do have a concept of
4265 * "tainted because running with altered effective ids', you'll
4266 * have to add your own checks somewhere in here. The two most
4267 * known samples of 'implicitness' are Win32 and NetWare, neither
4268 * of which has much of concept of 'uids'. */
4269 int uid = PerlProc_getuid();
4270 int euid = PerlProc_geteuid();
4271 int gid = PerlProc_getgid();
4272 int egid = PerlProc_getegid();
4279 if (uid && (euid != uid || egid != gid))
4281 #endif /* !PERL_IMPLICIT_SYS */
4282 /* This is a really primitive check; environment gets ignored only
4283 * if -T are the first chars together; otherwise one gets
4284 * "Too late" message. */
4285 if ( argc > 1 && argv[1][0] == '-'
4286 && (argv[1][1] == 't' || argv[1][1] == 'T') )
4292 S_forbid_setid(pTHX_ const char *s)
4294 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
4295 if (PL_euid != PL_uid)
4296 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
4297 if (PL_egid != PL_gid)
4298 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
4299 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
4301 * Checks for UID/GID above "wrong": why disallow
4302 * perl -e 'print "Hello\n"'
4303 * from within setuid things?? Simply drop them: replaced by
4304 * fdscript/suidscript and #ifdef IAMSUID checks below.
4306 * This may be too late for command-line switches. Will catch those on
4307 * the #! line, after finding the script name and setting up
4308 * fdscript/suidscript. Note that suidperl does not get around to
4309 * parsing (and checking) the switches on the #! line, but checks that
4310 * the two sets are identical.
4312 * With SETUID_SCRIPTS_ARE_SECURE_NOW, could we use fdscript, also or
4313 * instead, or would that be "too late"? (We never have suidscript, can
4314 * we be sure to have fdscript?)
4316 * Catch things with suidscript (in descendant of suidperl), even with
4317 * right UID/GID. Was already checked in suidperl, with #ifdef IAMSUID,
4318 * below; but I am paranoid.
4320 * Also see comments about root running a setuid script, elsewhere.
4322 if (PL_suidscript >= 0)
4323 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", s);
4325 /* PSz 11 Nov 03 Catch it in suidperl, always! */
4326 Perl_croak(aTHX_ "No %s allowed in suidperl", s);
4327 #endif /* IAMSUID */
4331 Perl_init_debugger(pTHX)
4333 HV *ostash = PL_curstash;
4335 PL_curstash = PL_debstash;
4336 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("DB::args", GV_ADDMULTI, SVt_PVAV))));
4337 AvREAL_off(PL_dbargs);
4338 PL_DBgv = gv_fetchpv("DB::DB", GV_ADDMULTI, SVt_PVGV);
4339 PL_DBline = gv_fetchpv("DB::dbline", GV_ADDMULTI, SVt_PVAV);
4340 PL_DBsub = gv_HVadd(gv_fetchpv("DB::sub", GV_ADDMULTI, SVt_PVHV));
4341 PL_DBsingle = GvSV((gv_fetchpv("DB::single", GV_ADDMULTI, SVt_PV)));
4342 sv_setiv(PL_DBsingle, 0);
4343 PL_DBtrace = GvSV((gv_fetchpv("DB::trace", GV_ADDMULTI, SVt_PV)));
4344 sv_setiv(PL_DBtrace, 0);
4345 PL_DBsignal = GvSV((gv_fetchpv("DB::signal", GV_ADDMULTI, SVt_PV)));
4346 sv_setiv(PL_DBsignal, 0);
4347 PL_DBassertion = GvSV((gv_fetchpv("DB::assertion", GV_ADDMULTI, SVt_PV)));
4348 sv_setiv(PL_DBassertion, 0);
4349 PL_curstash = ostash;
4352 #ifndef STRESS_REALLOC
4353 #define REASONABLE(size) (size)
4355 #define REASONABLE(size) (1) /* unreasonable */
4359 Perl_init_stacks(pTHX)
4361 /* start with 128-item stack and 8K cxstack */
4362 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4363 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4364 PL_curstackinfo->si_type = PERLSI_MAIN;
4365 PL_curstack = PL_curstackinfo->si_stack;
4366 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4368 PL_stack_base = AvARRAY(PL_curstack);
4369 PL_stack_sp = PL_stack_base;
4370 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4372 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4375 PL_tmps_max = REASONABLE(128);
4377 Newx(PL_markstack,REASONABLE(32),I32);
4378 PL_markstack_ptr = PL_markstack;
4379 PL_markstack_max = PL_markstack + REASONABLE(32);
4383 Newx(PL_scopestack,REASONABLE(32),I32);
4384 PL_scopestack_ix = 0;
4385 PL_scopestack_max = REASONABLE(32);
4387 Newx(PL_savestack,REASONABLE(128),ANY);
4388 PL_savestack_ix = 0;
4389 PL_savestack_max = REASONABLE(128);
4397 while (PL_curstackinfo->si_next)
4398 PL_curstackinfo = PL_curstackinfo->si_next;
4399 while (PL_curstackinfo) {
4400 PERL_SI *p = PL_curstackinfo->si_prev;
4401 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4402 Safefree(PL_curstackinfo->si_cxstack);
4403 Safefree(PL_curstackinfo);
4404 PL_curstackinfo = p;
4406 Safefree(PL_tmps_stack);
4407 Safefree(PL_markstack);
4408 Safefree(PL_scopestack);
4409 Safefree(PL_savestack);
4418 lex_start(PL_linestr);
4420 PL_subname = newSVpvn("main",4);
4424 S_init_predump_symbols(pTHX)
4429 sv_setpvn(get_sv("\"", TRUE), " ", 1);
4430 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
4431 GvMULTI_on(PL_stdingv);
4432 io = GvIOp(PL_stdingv);
4433 IoTYPE(io) = IoTYPE_RDONLY;
4434 IoIFP(io) = PerlIO_stdin();
4435 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
4437 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
4439 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
4442 IoTYPE(io) = IoTYPE_WRONLY;
4443 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4445 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
4447 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
4449 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
4450 GvMULTI_on(PL_stderrgv);
4451 io = GvIOp(PL_stderrgv);
4452 IoTYPE(io) = IoTYPE_WRONLY;
4453 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4454 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
4456 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
4458 PL_statname = NEWSV(66,0); /* last filename we did stat on */
4460 Safefree(PL_osname);
4461 PL_osname = savepv(OSNAME);
4465 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4467 argc--,argv++; /* skip name of script */
4468 if (PL_doswitches) {
4469 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4473 if (argv[0][1] == '-' && !argv[0][2]) {
4477 if ((s = strchr(argv[0], '='))) {
4479 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
4482 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
4485 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
4486 GvMULTI_on(PL_argvgv);
4487 (void)gv_AVadd(PL_argvgv);
4488 av_clear(GvAVn(PL_argvgv));
4489 for (; argc > 0; argc--,argv++) {
4490 SV * const sv = newSVpv(argv[0],0);
4491 av_push(GvAVn(PL_argvgv),sv);
4492 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4493 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4496 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4497 (void)sv_utf8_decode(sv);
4503 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4508 PL_toptarget = NEWSV(0,0);
4509 sv_upgrade(PL_toptarget, SVt_PVFM);
4510 sv_setpvn(PL_toptarget, "", 0);
4511 PL_bodytarget = NEWSV(0,0);
4512 sv_upgrade(PL_bodytarget, SVt_PVFM);
4513 sv_setpvn(PL_bodytarget, "", 0);
4514 PL_formtarget = PL_bodytarget;
4518 init_argv_symbols(argc,argv);
4520 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
4521 #ifdef MACOS_TRADITIONAL
4522 /* $0 is not majick on a Mac */
4523 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
4525 sv_setpv(GvSV(tmpgv),PL_origfilename);
4526 magicname("0", "0", 1);
4529 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
4531 GvMULTI_on(PL_envgv);
4532 hv = GvHVn(PL_envgv);
4533 hv_magic(hv, Nullgv, PERL_MAGIC_env);
4535 #ifdef USE_ENVIRON_ARRAY
4536 /* Note that if the supplied env parameter is actually a copy
4537 of the global environ then it may now point to free'd memory
4538 if the environment has been modified since. To avoid this
4539 problem we treat env==NULL as meaning 'use the default'
4544 # ifdef USE_ITHREADS
4545 && PL_curinterp == aTHX
4549 environ[0] = Nullch;
4552 char** origenv = environ;
4555 for (; *env; env++) {
4556 if (!(s = strchr(*env,'=')) || s == *env)
4558 #if defined(MSDOS) && !defined(DJGPP)
4563 sv = newSVpv(s+1, 0);
4564 (void)hv_store(hv, *env, s - *env, sv, 0);
4567 if (origenv != environ) {
4568 /* realloc has shifted us */
4569 env = (env - origenv) + environ;
4574 #endif /* USE_ENVIRON_ARRAY */
4575 #endif /* !PERL_MICRO */
4578 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
4579 SvREADONLY_off(GvSV(tmpgv));
4580 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
4581 SvREADONLY_on(GvSV(tmpgv));
4583 #ifdef THREADS_HAVE_PIDS
4584 PL_ppid = (IV)getppid();
4587 /* touch @F array to prevent spurious warnings 20020415 MJD */
4589 (void) get_av("main::F", TRUE | GV_ADDMULTI);
4591 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
4592 (void) get_av("main::-", TRUE | GV_ADDMULTI);
4593 (void) get_av("main::+", TRUE | GV_ADDMULTI);
4597 S_init_perllib(pTHX)
4602 s = PerlEnv_getenv("PERL5LIB");
4604 * It isn't possible to delete an environment variable with
4605 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4606 * case we treat PERL5LIB as undefined if it has a zero-length value.
4608 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4609 if (s && *s != '\0')
4613 incpush(s, TRUE, TRUE, TRUE, FALSE);
4615 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE, TRUE, FALSE);
4617 /* Treat PERL5?LIB as a possible search list logical name -- the
4618 * "natural" VMS idiom for a Unix path string. We allow each
4619 * element to be a set of |-separated directories for compatibility.
4623 if (my_trnlnm("PERL5LIB",buf,0))
4624 do { incpush(buf,TRUE,TRUE,TRUE,FALSE); } while (my_trnlnm("PERL5LIB",buf,++idx));
4626 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE,TRUE,FALSE);
4630 /* Use the ~-expanded versions of APPLLIB (undocumented),
4631 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
4634 incpush(APPLLIB_EXP, TRUE, TRUE, TRUE, TRUE);
4638 incpush(ARCHLIB_EXP, FALSE, FALSE, TRUE, TRUE);
4640 #ifdef MACOS_TRADITIONAL
4643 SV * privdir = NEWSV(55, 0);
4644 char * macperl = PerlEnv_getenv("MACPERL");
4649 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
4650 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4651 incpush(SvPVX(privdir), TRUE, FALSE, TRUE, FALSE);
4652 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
4653 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
4654 incpush(SvPVX(privdir), TRUE, FALSE, TRUE, FALSE);
4656 SvREFCNT_dec(privdir);
4659 incpush(":", FALSE, FALSE, TRUE, FALSE);
4662 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4665 incpush(PRIVLIB_EXP, TRUE, FALSE, TRUE, TRUE);
4667 incpush(PRIVLIB_EXP, FALSE, FALSE, TRUE, TRUE);
4671 /* sitearch is always relative to sitelib on Windows for
4672 * DLL-based path intuition to work correctly */
4673 # if !defined(WIN32)
4674 incpush(SITEARCH_EXP, FALSE, FALSE, TRUE, TRUE);
4680 /* this picks up sitearch as well */
4681 incpush(SITELIB_EXP, TRUE, FALSE, TRUE, TRUE);
4683 incpush(SITELIB_EXP, FALSE, FALSE, TRUE, TRUE);
4687 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
4688 incpush(SITELIB_STEM, FALSE, TRUE, TRUE, TRUE);
4691 #ifdef PERL_VENDORARCH_EXP
4692 /* vendorarch is always relative to vendorlib on Windows for
4693 * DLL-based path intuition to work correctly */
4694 # if !defined(WIN32)
4695 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE, TRUE, TRUE);
4699 #ifdef PERL_VENDORLIB_EXP
4701 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE, TRUE, TRUE); /* this picks up vendorarch as well */
4703 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE, TRUE, TRUE);
4707 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
4708 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE, TRUE, TRUE);
4711 #ifdef PERL_OTHERLIBDIRS
4712 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE, TRUE, TRUE);
4716 incpush(".", FALSE, FALSE, TRUE, FALSE);
4717 #endif /* MACOS_TRADITIONAL */
4720 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4721 # define PERLLIB_SEP ';'
4724 # define PERLLIB_SEP '|'
4726 # if defined(MACOS_TRADITIONAL)
4727 # define PERLLIB_SEP ','
4729 # define PERLLIB_SEP ':'
4733 #ifndef PERLLIB_MANGLE
4734 # define PERLLIB_MANGLE(s,n) (s)
4737 /* Push a directory onto @INC if it exists.
4738 Generate a new SV if we do this, to save needing to copy the SV we push
4741 S_incpush_if_exists(pTHX_ SV *dir)
4744 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4745 S_ISDIR(tmpstatbuf.st_mode)) {
4746 av_push(GvAVn(PL_incgv), dir);
4753 S_incpush(pTHX_ const char *dir, bool addsubdirs, bool addoldvers, bool usesep,
4756 SV *subdir = Nullsv;
4757 const char *p = dir;
4762 if (addsubdirs || addoldvers) {
4763 subdir = NEWSV(0,0);
4766 /* Break at all separators */
4768 SV *libdir = NEWSV(55,0);
4771 /* skip any consecutive separators */
4773 while ( *p == PERLLIB_SEP ) {
4774 /* Uncomment the next line for PATH semantics */
4775 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
4780 if ( usesep && (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
4781 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
4786 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
4787 p = Nullch; /* break out */
4789 #ifdef MACOS_TRADITIONAL
4790 if (!strchr(SvPVX(libdir), ':')) {
4793 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
4795 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
4796 sv_catpv(libdir, ":");
4799 /* Do the if() outside the #ifdef to avoid warnings about an unused
4802 #ifdef PERL_RELOCATABLE_INC
4804 * Relocatable include entries are marked with a leading .../
4807 * 0: Remove that leading ".../"
4808 * 1: Remove trailing executable name (anything after the last '/')
4809 * from the perl path to give a perl prefix
4811 * While the @INC element starts "../" and the prefix ends with a real
4812 * directory (ie not . or ..) chop that real directory off the prefix
4813 * and the leading "../" from the @INC element. ie a logical "../"
4815 * Finally concatenate the prefix and the remainder of the @INC element
4816 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4817 * generates /usr/local/lib/perl5
4819 const char *libpath = SvPVX(libdir);
4820 STRLEN libpath_len = SvCUR(libdir);
4821 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4823 SV * const caret_X = get_sv("\030", 0);
4824 /* Going to use the SV just as a scratch buffer holding a C
4830 /* $^X is *the* source of taint if tainting is on, hence
4831 SvPOK() won't be true. */
4833 assert(SvPOKp(caret_X));
4834 prefix_sv = newSVpvn(SvPVX(caret_X), SvCUR(caret_X));
4835 /* Firstly take off the leading .../
4836 If all else fail we'll do the paths relative to the current
4838 sv_chop(libdir, libpath + 4);
4839 /* Don't use SvPV as we're intentionally bypassing taining,
4840 mortal copies that the mg_get of tainting creates, and
4841 corruption that seems to come via the save stack.
4842 I guess that the save stack isn't correctly set up yet. */
4843 libpath = SvPVX(libdir);
4844 libpath_len = SvCUR(libdir);
4846 /* This would work more efficiently with memrchr, but as it's
4847 only a GNU extension we'd need to probe for it and
4848 implement our own. Not hard, but maybe not worth it? */
4850 prefix = SvPVX(prefix_sv);
4851 lastslash = strrchr(prefix, '/');
4853 /* First time in with the *lastslash = '\0' we just wipe off
4854 the trailing /perl from (say) /usr/foo/bin/perl
4858 while ((*lastslash = '\0'), /* Do that, come what may. */
4859 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4860 && (lastslash = strrchr(prefix, '/')))) {
4861 if (lastslash[1] == '\0'
4862 || (lastslash[1] == '.'
4863 && (lastslash[2] == '/' /* ends "/." */
4864 || (lastslash[2] == '/'
4865 && lastslash[3] == '/' /* or "/.." */
4867 /* Prefix ends "/" or "/." or "/..", any of which
4868 are fishy, so don't do any more logical cleanup.
4872 /* Remove leading "../" from path */
4875 /* Next iteration round the loop removes the last
4876 directory name from prefix by writing a '\0' in
4877 the while clause. */
4879 /* prefix has been terminated with a '\0' to the correct
4880 length. libpath points somewhere into the libdir SV.
4881 We need to join the 2 with '/' and drop the result into
4883 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4884 SvREFCNT_dec(libdir);
4885 /* And this is the new libdir. */
4888 (PL_uid != PL_euid || PL_gid != PL_egid)) {
4889 /* Need to taint reloccated paths if running set ID */
4890 SvTAINTED_on(libdir);
4893 SvREFCNT_dec(prefix_sv);
4898 * BEFORE pushing libdir onto @INC we may first push version- and
4899 * archname-specific sub-directories.
4901 if (addsubdirs || addoldvers) {
4902 #ifdef PERL_INC_VERSION_LIST
4903 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4904 const char *incverlist[] = { PERL_INC_VERSION_LIST };
4905 const char **incver;
4911 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
4913 while (unix[len-1] == '/') len--; /* Cosmetic */
4914 sv_usepvn(libdir,unix,len);
4917 PerlIO_printf(Perl_error_log,
4918 "Failed to unixify @INC element \"%s\"\n",
4922 #ifdef MACOS_TRADITIONAL
4923 #define PERL_AV_SUFFIX_FMT ""
4924 #define PERL_ARCH_FMT "%s:"
4925 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
4927 #define PERL_AV_SUFFIX_FMT "/"
4928 #define PERL_ARCH_FMT "/%s"
4929 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
4931 /* .../version/archname if -d .../version/archname */
4932 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
4934 (int)PERL_REVISION, (int)PERL_VERSION,
4935 (int)PERL_SUBVERSION, ARCHNAME);
4936 subdir = S_incpush_if_exists(aTHX_ subdir);
4938 /* .../version if -d .../version */
4939 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
4940 (int)PERL_REVISION, (int)PERL_VERSION,
4941 (int)PERL_SUBVERSION);
4942 subdir = S_incpush_if_exists(aTHX_ subdir);
4944 /* .../archname if -d .../archname */
4945 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
4946 subdir = S_incpush_if_exists(aTHX_ subdir);
4950 #ifdef PERL_INC_VERSION_LIST
4952 for (incver = incverlist; *incver; incver++) {
4953 /* .../xxx if -d .../xxx */
4954 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
4955 subdir = S_incpush_if_exists(aTHX_ subdir);
4961 /* finally push this lib directory on the end of @INC */
4962 av_push(GvAVn(PL_incgv), libdir);
4965 assert (SvREFCNT(subdir) == 1);
4966 SvREFCNT_dec(subdir);
4970 #ifdef USE_5005THREADS
4971 STATIC struct perl_thread *
4972 S_init_main_thread(pTHX)
4974 #if !defined(PERL_IMPLICIT_CONTEXT)
4975 struct perl_thread *thr;
4979 Newxz(thr, 1, struct perl_thread);
4980 PL_curcop = &PL_compiling;
4981 thr->interp = PERL_GET_INTERP;
4982 thr->cvcache = newHV();
4983 thr->threadsv = newAV();
4984 /* thr->threadsvp is set when find_threadsv is called */
4985 thr->specific = newAV();
4986 thr->flags = THRf_R_JOINABLE;
4987 MUTEX_INIT(&thr->mutex);
4988 /* Handcraft thrsv similarly to mess_sv */
4989 Newx(PL_thrsv, 1, SV);
4991 SvFLAGS(PL_thrsv) = SVt_PV;
4992 SvANY(PL_thrsv) = (void*)xpv;
4993 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
4994 SvPV_set(PL_thrsvr, (char*)thr);
4995 SvCUR_set(PL_thrsv, sizeof(thr));
4996 SvLEN_set(PL_thrsv, sizeof(thr));
4997 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
4998 thr->oursv = PL_thrsv;
4999 PL_chopset = " \n-";
5002 MUTEX_LOCK(&PL_threads_mutex);
5008 MUTEX_UNLOCK(&PL_threads_mutex);
5010 #ifdef HAVE_THREAD_INTERN
5011 Perl_init_thread_intern(thr);
5014 #ifdef SET_THREAD_SELF
5015 SET_THREAD_SELF(thr);
5017 thr->self = pthread_self();
5018 #endif /* SET_THREAD_SELF */
5022 * These must come after the thread self setting
5023 * because sv_setpvn does SvTAINT and the taint
5024 * fields thread selfness being set.
5026 PL_toptarget = NEWSV(0,0);
5027 sv_upgrade(PL_toptarget, SVt_PVFM);
5028 sv_setpvn(PL_toptarget, "", 0);
5029 PL_bodytarget = NEWSV(0,0);
5030 sv_upgrade(PL_bodytarget, SVt_PVFM);
5031 sv_setpvn(PL_bodytarget, "", 0);
5032 PL_formtarget = PL_bodytarget;
5033 thr->errsv = newSVpvn("", 0);
5034 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5037 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
5038 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
5039 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
5040 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
5041 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
5042 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
5044 PL_reginterp_cnt = 0;
5048 #endif /* USE_5005THREADS */
5051 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
5055 const line_t oldline = CopLINE(PL_curcop);
5061 while (av_len(paramList) >= 0) {
5062 cv = (CV*)av_shift(paramList);
5064 if (paramList == PL_beginav) {
5065 /* save PL_beginav for compiler */
5066 if (! PL_beginav_save)
5067 PL_beginav_save = newAV();
5068 av_push(PL_beginav_save, (SV*)cv);
5070 else if (paramList == PL_checkav) {
5071 /* save PL_checkav for compiler */
5072 if (! PL_checkav_save)
5073 PL_checkav_save = newAV();
5074 av_push(PL_checkav_save, (SV*)cv);
5084 (void)SvPV_const(atsv, len);
5086 PL_curcop = &PL_compiling;
5087 CopLINE_set(PL_curcop, oldline);
5088 if (paramList == PL_beginav)
5089 sv_catpv(atsv, "BEGIN failed--compilation aborted");
5091 Perl_sv_catpvf(aTHX_ atsv,
5092 "%s failed--call queue aborted",
5093 paramList == PL_checkav ? "CHECK"
5094 : paramList == PL_initav ? "INIT"
5096 while (PL_scopestack_ix > oldscope)
5099 Perl_croak(aTHX_ "%"SVf"", atsv);
5106 /* my_exit() was called */
5107 while (PL_scopestack_ix > oldscope)
5110 PL_curstash = PL_defstash;
5111 PL_curcop = &PL_compiling;
5112 CopLINE_set(PL_curcop, oldline);
5114 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
5115 if (paramList == PL_beginav)
5116 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
5118 Perl_croak(aTHX_ "%s failed--call queue aborted",
5119 paramList == PL_checkav ? "CHECK"
5120 : paramList == PL_initav ? "INIT"
5127 PL_curcop = &PL_compiling;
5128 CopLINE_set(PL_curcop, oldline);
5131 PerlIO_printf(Perl_error_log, "panic: restartop\n");
5140 S_call_list_body(pTHX_ CV *cv)
5142 PUSHMARK(PL_stack_sp);
5143 call_sv((SV*)cv, G_EVAL|G_DISCARD);
5148 Perl_my_exit(pTHX_ U32 status)
5150 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
5151 thr, (unsigned long) status));
5160 STATUS_EXIT_SET(status);
5167 Perl_my_failure_exit(pTHX)
5170 /* We have been called to fall on our sword. The desired exit code
5171 * should be already set in STATUS_UNIX, but could be shifted over
5172 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
5175 * If an error code has not been set, then force the issue.
5177 if (MY_POSIX_EXIT) {
5179 /* In POSIX_EXIT mode follow Perl documentations and use 255 for
5180 * the exit code when there isn't an error.
5183 if (STATUS_UNIX == 0)
5184 STATUS_UNIX_EXIT_SET(255);
5186 STATUS_UNIX_EXIT_SET(STATUS_UNIX);
5188 /* The exit code could have been set by $? or vmsish which
5189 * means that it may not be fatal. So convert
5190 * success/warning codes to fatal.
5192 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0)
5193 STATUS_UNIX_EXIT_SET(255);
5197 /* Traditionally Perl on VMS always expects a Fatal Error. */
5198 if (vaxc$errno & 1) {
5200 /* So force success status to failure */
5201 if (STATUS_NATIVE & 1)
5206 STATUS_UNIX = EINTR; /* In case something cares */
5211 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5213 /* Encode the severity code */
5214 severity = STATUS_NATIVE & STS$M_SEVERITY;
5215 STATUS_UNIX = (severity ? severity : 1) << 8;
5217 /* Perl expects this to be a fatal error */
5218 if (severity != STS$K_SEVERE)
5227 STATUS_UNIX_SET(errno);
5229 exitstatus = STATUS_UNIX >> 8;
5230 if (exitstatus & 255)
5231 STATUS_UNIX_SET(exitstatus);
5233 STATUS_UNIX_SET(255);
5240 S_my_exit_jump(pTHX)
5243 register PERL_CONTEXT *cx;
5248 SvREFCNT_dec(PL_e_script);
5249 PL_e_script = Nullsv;
5252 POPSTACK_TO(PL_mainstack);
5253 if (cxstack_ix >= 0) {
5256 POPBLOCK(cx,PL_curpm);
5261 PERL_UNUSED_VAR(gimme);
5262 PERL_UNUSED_VAR(newsp);
5266 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5268 const char * const p = SvPVX_const(PL_e_script);
5269 const char *nl = strchr(p, '\n');
5271 PERL_UNUSED_ARG(idx);
5272 PERL_UNUSED_ARG(maxlen);
5274 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5276 filter_del(read_e_script);
5279 sv_catpvn(buf_sv, p, nl-p);
5280 sv_chop(PL_e_script, nl);
5286 * c-indentation-style: bsd
5288 * indent-tabs-mode: t
5291 * ex: set ts=8 sts=4 sw=4 noet: