4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
6 * by Larry Wall and others
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
21 /* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
24 * function of the interpreter; that can be found in perlmain.c
27 #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
41 #ifdef USE_KERN_PROC_PATHNAME
42 # include <sys/sysctl.h>
45 #ifdef USE_NSGETEXECUTABLEPATH
46 # include <mach-o/dyld.h>
49 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
56 char control[CMSG_SPACE(sizeof(int))];
73 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
74 char *getenv (char *); /* Usually in <stdlib.h> */
77 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
79 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
80 # define validate_suid(rsfp) NOOP
82 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
85 #define CALL_BODY_SUB(myop) \
86 if (PL_op == (myop)) \
87 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
91 #define CALL_LIST_BODY(cv) \
92 PUSHMARK(PL_stack_sp); \
93 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
96 S_init_tls_and_interp(PerlInterpreter *my_perl)
100 PERL_SET_INTERP(my_perl);
101 #if defined(USE_ITHREADS)
104 PERL_SET_THX(my_perl);
108 MUTEX_INIT(&PL_dollarzero_mutex);
109 MUTEX_INIT(&PL_my_ctx_mutex);
112 #if defined(USE_ITHREADS)
115 /* This always happens for non-ithreads */
118 PERL_SET_THX(my_perl);
123 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
126 Perl_sys_init(int* argc, char*** argv)
130 PERL_ARGS_ASSERT_SYS_INIT;
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_SYS_INIT_BODY(argc, argv);
138 Perl_sys_init3(int* argc, char*** argv, char*** env)
142 PERL_ARGS_ASSERT_SYS_INIT3;
144 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
145 PERL_UNUSED_ARG(argv);
146 PERL_UNUSED_ARG(env);
147 PERL_SYS_INIT3_BODY(argc, argv, env);
154 if (!PL_veto_cleanup) {
155 PERL_SYS_TERM_BODY();
160 #ifdef PERL_IMPLICIT_SYS
162 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
163 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
164 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
165 struct IPerlDir* ipD, struct IPerlSock* ipS,
166 struct IPerlProc* ipP)
168 PerlInterpreter *my_perl;
170 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
172 /* Newx() needs interpreter, so call malloc() instead */
173 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
174 S_init_tls_and_interp(my_perl);
175 Zero(my_perl, 1, PerlInterpreter);
185 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
192 =head1 Embedding Functions
194 =for apidoc perl_alloc
196 Allocates a new Perl interpreter. See L<perlembed>.
204 PerlInterpreter *my_perl;
206 /* Newx() needs interpreter, so call malloc() instead */
207 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
209 S_init_tls_and_interp(my_perl);
210 #ifndef PERL_TRACK_MEMPOOL
211 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
213 Zero(my_perl, 1, PerlInterpreter);
214 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
218 #endif /* PERL_IMPLICIT_SYS */
221 =for apidoc perl_construct
223 Initializes a new Perl interpreter. See L<perlembed>.
229 perl_construct(pTHXx)
233 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
237 PL_perl_destruct_level = 1;
239 PERL_UNUSED_ARG(my_perl);
240 if (PL_perl_destruct_level > 0)
243 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
245 /* set read-only and try to insure than we wont see REFCNT==0
248 SvREADONLY_on(&PL_sv_undef);
249 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
251 sv_setpv(&PL_sv_no,PL_No);
252 /* value lookup in void context - happens to have the side effect
253 of caching the numeric forms. However, as &PL_sv_no doesn't contain
254 a string that is a valid numer, we have to turn the public flags by
260 SvREADONLY_on(&PL_sv_no);
261 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
263 sv_setpv(&PL_sv_yes,PL_Yes);
266 SvREADONLY_on(&PL_sv_yes);
267 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
269 SvREADONLY_on(&PL_sv_placeholder);
270 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
272 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
273 #ifdef PERL_USES_PL_PIDSTATUS
274 PL_pidstatus = newHV();
277 PL_rs = newSVpvs("\n");
287 SET_NUMERIC_STANDARD();
289 #if defined(LOCAL_PATCH_COUNT)
290 PL_localpatches = local_patches; /* For possible -v */
293 #ifdef HAVE_INTERP_INTERN
297 PerlIO_init(aTHX); /* Hook to IO system */
299 PL_fdpid = newAV(); /* for remembering popen pids by fd */
300 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
301 PL_errors = newSVpvs("");
302 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
303 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
304 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
306 /* First entry is a list of empty elements. It needs to be initialised
307 else all hell breaks loose in S_find_uninit_var(). */
308 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
309 PL_regex_pad = AvARRAY(PL_regex_padav);
310 Newxz(PL_stashpad, PL_stashpadmax, HV *);
312 #ifdef USE_REENTRANT_API
313 Perl_reentrant_init(aTHX);
316 /* Note that strtab is a rather special HV. Assumptions are made
317 about not iterating on it, and not adding tie magic to it.
318 It is properly deallocated in perl_destruct() */
321 HvSHAREKEYS_off(PL_strtab); /* mandatory */
322 hv_ksplit(PL_strtab, 512);
324 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
325 _dyld_lookup_and_bind
326 ("__environ", (unsigned long *) &environ_pointer, NULL);
330 # ifdef USE_ENVIRON_ARRAY
331 PL_origenviron = environ;
335 /* Use sysconf(_SC_CLK_TCK) if available, if not
336 * available or if the sysconf() fails, use the HZ.
337 * BeOS has those, but returns the wrong value.
338 * The HZ if not originally defined has been by now
339 * been defined as CLK_TCK, if available. */
340 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
341 PL_clocktick = sysconf(_SC_CLK_TCK);
342 if (PL_clocktick <= 0)
346 PL_stashcache = newHV();
348 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
349 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
352 if (!PL_mmap_page_size) {
353 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
355 SETERRNO(0, SS_NORMAL);
357 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
359 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
361 if ((long) PL_mmap_page_size < 0) {
363 SV * const error = ERRSV;
364 SvUPGRADE(error, SVt_PV);
365 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
368 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
372 # ifdef HAS_GETPAGESIZE
373 PL_mmap_page_size = getpagesize();
375 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
376 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
380 if (PL_mmap_page_size <= 0)
381 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
382 (IV) PL_mmap_page_size);
384 #endif /* HAS_MMAP */
386 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
387 PL_timesbase.tms_utime = 0;
388 PL_timesbase.tms_stime = 0;
389 PL_timesbase.tms_cutime = 0;
390 PL_timesbase.tms_cstime = 0;
393 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
395 PL_registered_mros = newHV();
396 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
397 HvMAX(PL_registered_mros) = 0;
403 =for apidoc nothreadhook
405 Stub that provides thread hook for perl_destruct when there are
412 Perl_nothreadhook(pTHX)
418 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
420 Perl_dump_sv_child(pTHX_ SV *sv)
423 const int sock = PL_dumper_fd;
424 const int debug_fd = PerlIO_fileno(Perl_debug_log);
425 union control_un control;
428 struct cmsghdr *cmptr;
430 unsigned char buffer[256];
432 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
434 if(sock == -1 || debug_fd == -1)
437 PerlIO_flush(Perl_debug_log);
439 /* All these shenanigans are to pass a file descriptor over to our child for
440 it to dump out to. We can't let it hold open the file descriptor when it
441 forks, as the file descriptor it will dump to can turn out to be one end
442 of pipe that some other process will wait on for EOF. (So as it would
443 be open, the wait would be forever.) */
445 msg.msg_control = control.control;
446 msg.msg_controllen = sizeof(control.control);
447 /* We're a connected socket so we don't need a destination */
453 cmptr = CMSG_FIRSTHDR(&msg);
454 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
455 cmptr->cmsg_level = SOL_SOCKET;
456 cmptr->cmsg_type = SCM_RIGHTS;
457 *((int *)CMSG_DATA(cmptr)) = 1;
459 vec[0].iov_base = (void*)&sv;
460 vec[0].iov_len = sizeof(sv);
461 got = sendmsg(sock, &msg, 0);
464 perror("Debug leaking scalars parent sendmsg failed");
467 if(got < sizeof(sv)) {
468 perror("Debug leaking scalars parent short sendmsg");
472 /* Return protocol is
474 unsigned char: length of location string (0 for empty)
475 unsigned char*: string (not terminated)
477 vec[0].iov_base = (void*)&returned_errno;
478 vec[0].iov_len = sizeof(returned_errno);
479 vec[1].iov_base = buffer;
482 got = readv(sock, vec, 2);
485 perror("Debug leaking scalars parent read failed");
486 PerlIO_flush(PerlIO_stderr());
489 if(got < sizeof(returned_errno) + 1) {
490 perror("Debug leaking scalars parent short read");
491 PerlIO_flush(PerlIO_stderr());
496 got = read(sock, buffer + 1, *buffer);
498 perror("Debug leaking scalars parent read 2 failed");
499 PerlIO_flush(PerlIO_stderr());
504 perror("Debug leaking scalars parent short read 2");
505 PerlIO_flush(PerlIO_stderr());
510 if (returned_errno || *buffer) {
511 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
512 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
513 returned_errno, strerror(returned_errno));
519 =for apidoc perl_destruct
521 Shuts down a Perl interpreter. See L<perlembed>.
530 VOL signed char destruct_level; /* see possible values in intrpvar.h */
532 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
536 PERL_ARGS_ASSERT_PERL_DESTRUCT;
538 PERL_UNUSED_ARG(my_perl);
541 assert(PL_scopestack_ix == 1);
543 /* wait for all pseudo-forked children to finish */
544 PERL_WAIT_FOR_CHILDREN;
546 destruct_level = PL_perl_destruct_level;
549 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
551 const int i = atoi(s);
552 if (destruct_level < i)
558 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
564 if (PL_endav && !PL_minus_c) {
565 PERL_SET_PHASE(PERL_PHASE_END);
566 call_list(PL_scopestack_ix, PL_endav);
572 assert(PL_scopestack_ix == 0);
574 /* Need to flush since END blocks can produce output */
577 if (PL_threadhook(aTHX)) {
578 /* Threads hook has vetoed further cleanup */
579 PL_veto_cleanup = TRUE;
583 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
584 if (destruct_level != 0) {
585 /* Fork here to create a child. Our child's job is to preserve the
586 state of scalars prior to destruction, so that we can instruct it
587 to dump any scalars that we later find have leaked.
588 There's no subtlety in this code - it assumes POSIX, and it doesn't
592 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
593 perror("Debug leaking scalars socketpair failed");
599 perror("Debug leaking scalars fork failed");
603 /* We are the child */
604 const int sock = fd[1];
605 const int debug_fd = PerlIO_fileno(Perl_debug_log);
608 /* Our success message is an integer 0, and a char 0 */
609 static const char success[sizeof(int) + 1] = {0};
613 /* We need to close all other file descriptors otherwise we end up
614 with interesting hangs, where the parent closes its end of a
615 pipe, and sits waiting for (another) child to terminate. Only
616 that child never terminates, because it never gets EOF, because
617 we also have the far end of the pipe open. We even need to
618 close the debugging fd, because sometimes it happens to be one
619 end of a pipe, and a process is waiting on the other end for
620 EOF. Normally it would be closed at some point earlier in
621 destruction, but if we happen to cause the pipe to remain open,
622 EOF never occurs, and we get an infinite hang. Hence all the
623 games to pass in a file descriptor if it's actually needed. */
625 f = sysconf(_SC_OPEN_MAX);
627 where = "sysconf failed";
638 union control_un control;
641 struct cmsghdr *cmptr;
645 msg.msg_control = control.control;
646 msg.msg_controllen = sizeof(control.control);
647 /* We're a connected socket so we don't need a source */
651 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
653 vec[0].iov_base = (void*)⌖
654 vec[0].iov_len = sizeof(target);
656 got = recvmsg(sock, &msg, 0);
661 where = "recv failed";
664 if(got < sizeof(target)) {
665 where = "short recv";
669 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
673 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
674 where = "wrong cmsg_len";
677 if(cmptr->cmsg_level != SOL_SOCKET) {
678 where = "wrong cmsg_level";
681 if(cmptr->cmsg_type != SCM_RIGHTS) {
682 where = "wrong cmsg_type";
686 got_fd = *(int*)CMSG_DATA(cmptr);
687 /* For our last little bit of trickery, put the file descriptor
688 back into Perl_debug_log, as if we never actually closed it
690 if(got_fd != debug_fd) {
691 if (dup2(got_fd, debug_fd) == -1) {
698 PerlIO_flush(Perl_debug_log);
700 got = write(sock, &success, sizeof(success));
703 where = "write failed";
706 if(got < sizeof(success)) {
707 where = "short write";
714 int send_errno = errno;
715 unsigned char length = (unsigned char) strlen(where);
716 struct iovec failure[3] = {
717 {(void*)&send_errno, sizeof(send_errno)},
719 {(void*)where, length}
721 int got = writev(sock, failure, 3);
722 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
723 in the parent if we try to read from the socketpair after the
724 child has exited, even if there was data to read.
725 So sleep a bit to give the parent a fighting chance of
728 _exit((got == -1) ? errno : 0);
732 PL_dumper_fd = fd[0];
737 /* We must account for everything. */
739 /* Destroy the main CV and syntax tree */
740 /* Set PL_curcop now, because destroying ops can cause new SVs
741 to be generated in Perl_pad_swipe, and when running with
742 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
743 op from which the filename structure member is copied. */
744 PL_curcop = &PL_compiling;
746 /* ensure comppad/curpad to refer to main's pad */
747 if (CvPADLIST(PL_main_cv)) {
748 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
750 op_free(PL_main_root);
753 PL_main_start = NULL;
754 /* note that PL_main_cv isn't usually actually freed at this point,
755 * due to the CvOUTSIDE refs from subs compiled within it. It will
756 * get freed once all the subs are freed in sv_clean_all(), for
757 * destruct_level > 0 */
758 SvREFCNT_dec(PL_main_cv);
760 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
762 /* Tell PerlIO we are about to tear things apart in case
763 we have layers which are using resources that should
767 PerlIO_destruct(aTHX);
769 if (PL_sv_objcount) {
771 * Try to destruct global references. We do this first so that the
772 * destructors and destructees still exist. Some sv's might remain.
773 * Non-referenced objects are on their own.
779 /* unhook hooks which will soon be, or use, destroyed data */
780 SvREFCNT_dec(PL_warnhook);
782 SvREFCNT_dec(PL_diehook);
785 /* call exit list functions */
786 while (PL_exitlistlen-- > 0)
787 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
789 Safefree(PL_exitlist);
794 SvREFCNT_dec(PL_registered_mros);
796 /* jettison our possibly duplicated environment */
797 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
798 * so we certainly shouldn't free it here
801 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
802 if (environ != PL_origenviron && !PL_use_safe_putenv
804 /* only main thread can free environ[0] contents */
805 && PL_curinterp == aTHX
811 for (i = 0; environ[i]; i++)
812 safesysfree(environ[i]);
814 /* Must use safesysfree() when working with environ. */
815 safesysfree(environ);
817 environ = PL_origenviron;
820 #endif /* !PERL_MICRO */
822 if (destruct_level == 0) {
824 DEBUG_P(debprofdump());
826 #if defined(PERLIO_LAYERS)
827 /* No more IO - including error messages ! */
828 PerlIO_cleanup(aTHX);
831 CopFILE_free(&PL_compiling);
833 /* The exit() function will do everything that needs doing. */
838 /* the syntax tree is shared between clones
839 * so op_free(PL_main_root) only ReREFCNT_dec's
840 * REGEXPs in the parent interpreter
841 * we need to manually ReREFCNT_dec for the clones
844 I32 i = AvFILLp(PL_regex_padav);
845 SV **ary = AvARRAY(PL_regex_padav);
848 SvREFCNT_dec(ary[i]);
849 ary[i] = &PL_sv_undef;
852 Safefree(PL_stashpad);
856 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
857 PL_stashcache = NULL;
859 /* loosen bonds of global variables */
861 /* XXX can PL_parser still be non-null here? */
862 if(PL_parser && PL_parser->rsfp) {
863 (void)PerlIO_close(PL_parser->rsfp);
864 PL_parser->rsfp = NULL;
868 Safefree(PL_splitstr);
878 PL_doswitches = FALSE;
879 PL_dowarn = G_WARN_OFF;
880 PL_sawampersand = FALSE; /* must save all match strings */
883 Safefree(PL_inplace);
885 SvREFCNT_dec(PL_patchlevel);
886 SvREFCNT_dec(PL_apiversion);
889 SvREFCNT_dec(PL_e_script);
895 /* magical thingies */
897 SvREFCNT_dec(PL_ofsgv); /* *, */
900 SvREFCNT_dec(PL_ors_sv); /* $\ */
903 SvREFCNT_dec(PL_rs); /* $/ */
906 Safefree(PL_osname); /* $^O */
909 SvREFCNT_dec(PL_statname);
913 /* defgv, aka *_ should be taken care of elsewhere */
916 Safefree(PL_efloatbuf);
920 /* startup and shutdown function lists */
921 SvREFCNT_dec(PL_beginav);
922 SvREFCNT_dec(PL_beginav_save);
923 SvREFCNT_dec(PL_endav);
924 SvREFCNT_dec(PL_checkav);
925 SvREFCNT_dec(PL_checkav_save);
926 SvREFCNT_dec(PL_unitcheckav);
927 SvREFCNT_dec(PL_unitcheckav_save);
928 SvREFCNT_dec(PL_initav);
930 PL_beginav_save = NULL;
933 PL_checkav_save = NULL;
934 PL_unitcheckav = NULL;
935 PL_unitcheckav_save = NULL;
938 /* shortcuts just get cleared */
947 PL_last_in_gv = NULL;
959 SvREFCNT_dec(PL_argvout_stack);
960 PL_argvout_stack = NULL;
962 SvREFCNT_dec(PL_modglobal);
964 SvREFCNT_dec(PL_preambleav);
965 PL_preambleav = NULL;
966 SvREFCNT_dec(PL_subname);
968 #ifdef PERL_USES_PL_PIDSTATUS
969 SvREFCNT_dec(PL_pidstatus);
972 SvREFCNT_dec(PL_toptarget);
974 SvREFCNT_dec(PL_bodytarget);
975 PL_bodytarget = NULL;
976 PL_formtarget = NULL;
978 /* free locale stuff */
979 #ifdef USE_LOCALE_COLLATE
980 Safefree(PL_collation_name);
981 PL_collation_name = NULL;
984 #ifdef USE_LOCALE_NUMERIC
985 Safefree(PL_numeric_name);
986 PL_numeric_name = NULL;
987 SvREFCNT_dec(PL_numeric_radix_sv);
988 PL_numeric_radix_sv = NULL;
991 /* clear utf8 character classes */
992 SvREFCNT_dec(PL_utf8_alnum);
993 SvREFCNT_dec(PL_utf8_alpha);
994 SvREFCNT_dec(PL_utf8_blank);
995 SvREFCNT_dec(PL_utf8_space);
996 SvREFCNT_dec(PL_utf8_graph);
997 SvREFCNT_dec(PL_utf8_digit);
998 SvREFCNT_dec(PL_utf8_upper);
999 SvREFCNT_dec(PL_utf8_lower);
1000 SvREFCNT_dec(PL_utf8_print);
1001 SvREFCNT_dec(PL_utf8_punct);
1002 SvREFCNT_dec(PL_utf8_xdigit);
1003 SvREFCNT_dec(PL_utf8_mark);
1004 SvREFCNT_dec(PL_utf8_toupper);
1005 SvREFCNT_dec(PL_utf8_totitle);
1006 SvREFCNT_dec(PL_utf8_tolower);
1007 SvREFCNT_dec(PL_utf8_tofold);
1008 SvREFCNT_dec(PL_utf8_idstart);
1009 SvREFCNT_dec(PL_utf8_idcont);
1010 SvREFCNT_dec(PL_utf8_foldclosures);
1011 PL_utf8_alnum = NULL;
1012 PL_utf8_alpha = NULL;
1013 PL_utf8_blank = NULL;
1014 PL_utf8_space = NULL;
1015 PL_utf8_graph = NULL;
1016 PL_utf8_digit = NULL;
1017 PL_utf8_upper = NULL;
1018 PL_utf8_lower = NULL;
1019 PL_utf8_print = NULL;
1020 PL_utf8_punct = NULL;
1021 PL_utf8_xdigit = NULL;
1022 PL_utf8_mark = NULL;
1023 PL_utf8_toupper = NULL;
1024 PL_utf8_totitle = NULL;
1025 PL_utf8_tolower = NULL;
1026 PL_utf8_tofold = NULL;
1027 PL_utf8_idstart = NULL;
1028 PL_utf8_idcont = NULL;
1029 PL_utf8_foldclosures = NULL;
1031 if (!specialWARN(PL_compiling.cop_warnings))
1032 PerlMemShared_free(PL_compiling.cop_warnings);
1033 PL_compiling.cop_warnings = NULL;
1034 cophh_free(CopHINTHASH_get(&PL_compiling));
1035 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1036 CopFILE_free(&PL_compiling);
1038 /* Prepare to destruct main symbol table. */
1041 /* break ref loop *:: <=> %:: */
1042 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1045 SvREFCNT_dec(PL_curstname);
1046 PL_curstname = NULL;
1048 /* clear queued errors */
1049 SvREFCNT_dec(PL_errors);
1052 SvREFCNT_dec(PL_isarev);
1055 if (destruct_level >= 2) {
1056 if (PL_scopestack_ix != 0)
1057 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1058 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1059 (long)PL_scopestack_ix);
1060 if (PL_savestack_ix != 0)
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1062 "Unbalanced saves: %ld more saves than restores\n",
1063 (long)PL_savestack_ix);
1064 if (PL_tmps_floor != -1)
1065 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1066 (long)PL_tmps_floor + 1);
1067 if (cxstack_ix != -1)
1068 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1069 (long)cxstack_ix + 1);
1073 SvREFCNT_dec(PL_regex_padav);
1074 PL_regex_padav = NULL;
1075 PL_regex_pad = NULL;
1078 #ifdef PERL_IMPLICIT_CONTEXT
1079 /* the entries in this list are allocated via SV PVX's, so get freed
1080 * in sv_clean_all */
1081 Safefree(PL_my_cxt_list);
1084 /* Now absolutely destruct everything, somehow or other, loops or no. */
1086 /* the 2 is for PL_fdpid and PL_strtab */
1087 while (sv_clean_all() > 2)
1090 AvREAL_off(PL_fdpid); /* no surviving entries */
1091 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1094 #ifdef HAVE_INTERP_INTERN
1098 /* Destruct the global string table. */
1100 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1101 * so that sv_free() won't fail on them.
1102 * Now that the global string table is using a single hunk of memory
1103 * for both HE and HEK, we either need to explicitly unshare it the
1104 * correct way, or actually free things here.
1107 const I32 max = HvMAX(PL_strtab);
1108 HE * const * const array = HvARRAY(PL_strtab);
1109 HE *hent = array[0];
1112 if (hent && ckWARN_d(WARN_INTERNAL)) {
1113 HE * const next = HeNEXT(hent);
1114 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1115 "Unbalanced string table refcount: (%ld) for \"%s\"",
1116 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1123 hent = array[riter];
1128 HvARRAY(PL_strtab) = 0;
1129 HvTOTALKEYS(PL_strtab) = 0;
1131 SvREFCNT_dec(PL_strtab);
1134 /* free the pointer tables used for cloning */
1135 ptr_table_free(PL_ptr_table);
1136 PL_ptr_table = (PTR_TBL_t*)NULL;
1139 /* free special SVs */
1141 SvREFCNT(&PL_sv_yes) = 0;
1142 sv_clear(&PL_sv_yes);
1143 SvANY(&PL_sv_yes) = NULL;
1144 SvFLAGS(&PL_sv_yes) = 0;
1146 SvREFCNT(&PL_sv_no) = 0;
1147 sv_clear(&PL_sv_no);
1148 SvANY(&PL_sv_no) = NULL;
1149 SvFLAGS(&PL_sv_no) = 0;
1153 for (i=0; i<=2; i++) {
1154 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1155 sv_clear(PERL_DEBUG_PAD(i));
1156 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1157 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1161 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1162 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1164 #ifdef DEBUG_LEAKING_SCALARS
1165 if (PL_sv_count != 0) {
1170 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1171 svend = &sva[SvREFCNT(sva)];
1172 for (sv = sva + 1; sv < svend; ++sv) {
1173 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1174 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1176 " refcnt=%"UVuf pTHX__FORMAT "\n"
1177 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1179 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1181 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1183 sv->sv_debug_inpad ? "for" : "by",
1184 sv->sv_debug_optype ?
1185 PL_op_name[sv->sv_debug_optype]: "(none)",
1186 PTR2UV(sv->sv_debug_parent),
1189 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1190 Perl_dump_sv_child(aTHX_ sv);
1196 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1200 /* Wait for up to 4 seconds for child to terminate.
1201 This seems to be the least effort way of timing out on reaping
1203 struct timeval waitfor = {4, 0};
1204 int sock = PL_dumper_fd;
1208 FD_SET(sock, &rset);
1209 select(sock + 1, &rset, NULL, NULL, &waitfor);
1210 waitpid(child, &status, WNOHANG);
1215 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1221 #ifdef PERL_DEBUG_READONLY_OPS
1227 #if defined(PERLIO_LAYERS)
1228 /* No more IO - including error messages ! */
1229 PerlIO_cleanup(aTHX);
1232 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1233 as currently layers use it rather than NULL as a marker
1234 for no arg - and will try and SvREFCNT_dec it.
1236 SvREFCNT(&PL_sv_undef) = 0;
1237 SvREADONLY_off(&PL_sv_undef);
1239 Safefree(PL_origfilename);
1240 PL_origfilename = NULL;
1241 Safefree(PL_reg_curpm);
1242 Safefree(PL_reg_poscache);
1243 free_tied_hv_pool();
1244 Safefree(PL_op_mask);
1245 Safefree(PL_psig_name);
1246 PL_psig_name = (SV**)NULL;
1247 PL_psig_ptr = (SV**)NULL;
1249 /* We need to NULL PL_psig_pend first, so that
1250 signal handlers know not to use it */
1251 int *psig_save = PL_psig_pend;
1252 PL_psig_pend = (int*)NULL;
1253 Safefree(psig_save);
1257 PL_tainting = FALSE;
1258 PL_taint_warn = FALSE;
1259 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1262 DEBUG_P(debprofdump());
1264 #ifdef USE_REENTRANT_API
1265 Perl_reentrant_free(aTHX);
1270 while (PL_regmatch_slab) {
1271 regmatch_slab *s = PL_regmatch_slab;
1272 PL_regmatch_slab = PL_regmatch_slab->next;
1276 /* As the absolutely last thing, free the non-arena SV for mess() */
1279 /* we know that type == SVt_PVMG */
1281 /* it could have accumulated taint magic */
1284 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1285 moremagic = mg->mg_moremagic;
1286 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1288 Safefree(mg->mg_ptr);
1292 /* we know that type >= SVt_PV */
1293 SvPV_free(PL_mess_sv);
1294 Safefree(SvANY(PL_mess_sv));
1295 Safefree(PL_mess_sv);
1302 =for apidoc perl_free
1304 Releases a Perl interpreter. See L<perlembed>.
1314 PERL_ARGS_ASSERT_PERL_FREE;
1316 if (PL_veto_cleanup)
1319 #ifdef PERL_TRACK_MEMPOOL
1322 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1323 * value as we're probably hunting memory leaks then
1325 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1326 if (!s || atoi(s) == 0) {
1327 const U32 old_debug = PL_debug;
1328 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1329 thread at thread exit. */
1331 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1332 "free this thread's memory\n");
1333 PL_debug &= ~ DEBUG_m_FLAG;
1335 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1336 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1337 PL_debug = old_debug;
1342 #if defined(WIN32) || defined(NETWARE)
1343 # if defined(PERL_IMPLICIT_SYS)
1346 void *host = nw_internal_host;
1348 void *host = w32_internal_host;
1350 PerlMem_free(aTHXx);
1352 nw_delete_internal_host(host);
1354 win32_delete_internal_host(host);
1358 PerlMem_free(aTHXx);
1361 PerlMem_free(aTHXx);
1365 #if defined(USE_ITHREADS)
1366 /* provide destructors to clean up the thread key when libperl is unloaded */
1367 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1369 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1370 #pragma fini "perl_fini"
1371 #elif defined(__sun) && !defined(__GNUC__)
1372 #pragma fini (perl_fini)
1376 #if defined(__GNUC__)
1377 __attribute__((destructor))
1382 if (PL_curinterp && !PL_veto_cleanup)
1387 #endif /* THREADS */
1390 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1393 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1394 PL_exitlist[PL_exitlistlen].fn = fn;
1395 PL_exitlist[PL_exitlistlen].ptr = ptr;
1400 S_set_caret_X(pTHX) {
1402 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1404 SV *const caret_x = GvSV(tmpgv);
1406 sv_setpv(caret_x, os2_execname(aTHX));
1408 # ifdef USE_KERN_PROC_PATHNAME
1413 mib[2] = KERN_PROC_PATHNAME;
1416 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1417 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1418 sv_grow(caret_x, size);
1420 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1422 SvPOK_only(caret_x);
1423 SvCUR_set(caret_x, size - 1);
1428 # elif defined(USE_NSGETEXECUTABLEPATH)
1430 uint32_t size = sizeof(buf);
1432 _NSGetExecutablePath(buf, &size);
1433 if (size < MAXPATHLEN * MAXPATHLEN) {
1434 sv_grow(caret_x, size);
1435 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1436 char *const tidied = realpath(SvPVX(caret_x), NULL);
1438 sv_setpv(caret_x, tidied);
1441 SvPOK_only(caret_x);
1442 SvCUR_set(caret_x, size);
1447 # elif defined(HAS_PROCSELFEXE)
1448 char buf[MAXPATHLEN];
1449 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1451 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1452 includes a spurious NUL which will cause $^X to fail in system
1453 or backticks (this will prevent extensions from being built and
1454 many tests from working). readlink is not meant to add a NUL.
1455 Normal readlink works fine.
1457 if (len > 0 && buf[len-1] == '\0') {
1461 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1462 returning the text "unknown" from the readlink rather than the path
1463 to the executable (or returning an error from the readlink). Any
1464 valid path has a '/' in it somewhere, so use that to validate the
1465 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1467 if (len > 0 && memchr(buf, '/', len)) {
1468 sv_setpvn(caret_x, buf, len);
1472 /* Fallback to this: */
1473 sv_setpv(caret_x, PL_origargv[0]);
1479 =for apidoc perl_parse
1481 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1486 #define SET_CURSTASH(newstash) \
1487 if (PL_curstash != newstash) { \
1488 SvREFCNT_dec(PL_curstash); \
1489 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1493 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1500 PERL_ARGS_ASSERT_PERL_PARSE;
1501 #ifndef MULTIPLICITY
1502 PERL_UNUSED_ARG(my_perl);
1505 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1506 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
1507 * This MUST be done before any hash stores or fetches take place.
1508 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
1509 * yourself, it is your responsibility to provide a good random seed!
1510 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
1511 if (!PL_rehash_seed_set)
1512 PL_rehash_seed = get_hash_seed();
1514 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1516 if (s && (atoi(s) == 1))
1517 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
1519 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1524 if (PL_origalen != 0) {
1525 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1528 /* Set PL_origalen be the sum of the contiguous argv[]
1529 * elements plus the size of the env in case that it is
1530 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1531 * as the maximum modifiable length of $0. In the worst case
1532 * the area we are able to modify is limited to the size of
1533 * the original argv[0]. (See below for 'contiguous', though.)
1535 const char *s = NULL;
1538 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1539 /* Do the mask check only if the args seem like aligned. */
1541 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1543 /* See if all the arguments are contiguous in memory. Note
1544 * that 'contiguous' is a loose term because some platforms
1545 * align the argv[] and the envp[]. If the arguments look
1546 * like non-aligned, assume that they are 'strictly' or
1547 * 'traditionally' contiguous. If the arguments look like
1548 * aligned, we just check that they are within aligned
1549 * PTRSIZE bytes. As long as no system has something bizarre
1550 * like the argv[] interleaved with some other data, we are
1551 * fine. (Did I just evoke Murphy's Law?) --jhi */
1552 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1554 for (i = 1; i < PL_origargc; i++) {
1555 if ((PL_origargv[i] == s + 1
1557 || PL_origargv[i] == s + 2
1562 (PL_origargv[i] > s &&
1564 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1575 #ifndef PERL_USE_SAFE_PUTENV
1576 /* Can we grab env area too to be used as the area for $0? */
1577 if (s && PL_origenviron && !PL_use_safe_putenv) {
1578 if ((PL_origenviron[0] == s + 1)
1581 (PL_origenviron[0] > s &&
1582 PL_origenviron[0] <=
1583 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1586 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1587 s = PL_origenviron[0];
1590 my_setenv("NoNe SuCh", NULL);
1591 /* Force copy of environment. */
1592 for (i = 1; PL_origenviron[i]; i++) {
1593 if (PL_origenviron[i] == s + 1
1596 (PL_origenviron[i] > s &&
1597 PL_origenviron[i] <=
1598 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1601 s = PL_origenviron[i];
1609 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1611 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1616 /* Come here if running an undumped a.out. */
1618 PL_origfilename = savepv(argv[0]);
1619 PL_do_undump = FALSE;
1620 cxstack_ix = -1; /* start label stack again */
1622 assert (!PL_tainted);
1624 S_set_caret_X(aTHX);
1626 init_postdump_symbols(argc,argv,env);
1631 op_free(PL_main_root);
1632 PL_main_root = NULL;
1634 PL_main_start = NULL;
1635 SvREFCNT_dec(PL_main_cv);
1639 oldscope = PL_scopestack_ix;
1640 PL_dowarn = G_WARN_OFF;
1645 parse_body(env,xsinit);
1646 if (PL_unitcheckav) {
1647 call_list(oldscope, PL_unitcheckav);
1650 PERL_SET_PHASE(PERL_PHASE_CHECK);
1651 call_list(oldscope, PL_checkav);
1659 /* my_exit() was called */
1660 while (PL_scopestack_ix > oldscope)
1663 SET_CURSTASH(PL_defstash);
1664 if (PL_unitcheckav) {
1665 call_list(oldscope, PL_unitcheckav);
1668 PERL_SET_PHASE(PERL_PHASE_CHECK);
1669 call_list(oldscope, PL_checkav);
1674 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1682 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1683 miniperl, and we need to see those flags reflected in the values here. */
1685 /* What this returns is subject to change. Use the public interface in Config.
1688 S_Internals_V(pTHX_ CV *cv)
1691 #ifdef LOCAL_PATCH_COUNT
1692 const int local_patch_count = LOCAL_PATCH_COUNT;
1694 const int local_patch_count = 0;
1696 const int entries = 3 + local_patch_count;
1698 static char non_bincompat_options[] =
1705 # ifdef PERL_DISABLE_PMC
1708 # ifdef PERL_DONT_CREATE_GVSV
1709 " PERL_DONT_CREATE_GVSV"
1711 # ifdef PERL_EXTERNAL_GLOB
1712 " PERL_EXTERNAL_GLOB"
1714 # ifdef PERL_IS_MINIPERL
1717 # ifdef PERL_MALLOC_WRAP
1720 # ifdef PERL_MEM_LOG
1723 # ifdef PERL_MEM_LOG_NOIMPL
1724 " PERL_MEM_LOG_NOIMPL"
1726 # ifdef PERL_PRESERVE_IVUV
1727 " PERL_PRESERVE_IVUV"
1729 # ifdef PERL_RELOCATABLE_INCPUSH
1730 " PERL_RELOCATABLE_INCPUSH"
1732 # ifdef PERL_USE_DEVEL
1735 # ifdef PERL_USE_SAFE_PUTENV
1736 " PERL_USE_SAFE_PUTENV"
1738 # ifdef UNLINK_ALL_VERSIONS
1739 " UNLINK_ALL_VERSIONS"
1741 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1742 " USE_ATTRIBUTES_FOR_PERLIO"
1744 # ifdef USE_FAST_STDIO
1750 # ifdef USE_LOCALE_CTYPE
1753 # ifdef USE_PERL_ATOF
1756 # ifdef USE_SITECUSTOMIZE
1757 " USE_SITECUSTOMIZE"
1760 PERL_UNUSED_ARG(cv);
1761 PERL_UNUSED_ARG(items);
1763 EXTEND(SP, entries);
1765 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1766 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1767 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1771 PUSHs(Perl_newSVpvn_flags(aTHX_
1772 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1775 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1779 PUSHs(&PL_sv_undef);
1782 for (i = 1; i <= local_patch_count; i++) {
1783 /* This will be an undef, if PL_localpatches[i] is NULL. */
1784 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1790 #define INCPUSH_UNSHIFT 0x01
1791 #define INCPUSH_ADD_OLD_VERS 0x02
1792 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1793 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1794 #define INCPUSH_NOT_BASEDIR 0x10
1795 #define INCPUSH_CAN_RELOCATE 0x20
1796 #define INCPUSH_ADD_SUB_DIRS \
1797 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1800 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1804 int argc = PL_origargc;
1805 char **argv = PL_origargv;
1806 const char *scriptname = NULL;
1807 VOL bool dosearch = FALSE;
1809 bool doextract = FALSE;
1810 const char *cddir = NULL;
1811 #ifdef USE_SITECUSTOMIZE
1812 bool minus_f = FALSE;
1814 SV *linestr_sv = NULL;
1815 bool add_read_e_script = FALSE;
1816 U32 lex_start_flags = 0;
1818 PERL_SET_PHASE(PERL_PHASE_START);
1824 for (argc--,argv++; argc > 0; argc--,argv++) {
1825 if (argv[0][0] != '-' || !argv[0][1])
1831 #ifndef PERL_STRICT_CR
1855 if ((s = moreswitches(s)))
1860 CHECK_MALLOC_TOO_LATE_FOR('t');
1861 if( !PL_tainting ) {
1862 PL_taint_warn = TRUE;
1868 CHECK_MALLOC_TOO_LATE_FOR('T');
1870 PL_taint_warn = FALSE;
1878 forbid_setid('e', FALSE);
1880 PL_e_script = newSVpvs("");
1881 add_read_e_script = TRUE;
1884 sv_catpv(PL_e_script, s);
1886 sv_catpv(PL_e_script, argv[1]);
1890 Perl_croak(aTHX_ "No code specified for -%c", c);
1891 sv_catpvs(PL_e_script, "\n");
1895 #ifdef USE_SITECUSTOMIZE
1901 case 'I': /* -I handled both here and in moreswitches() */
1902 forbid_setid('I', FALSE);
1903 if (!*++s && (s=argv[1]) != NULL) {
1907 STRLEN len = strlen(s);
1908 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1911 Perl_croak(aTHX_ "No directory specified for -I");
1914 forbid_setid('S', FALSE);
1923 opts_prog = newSVpvs("use Config; Config::_V()");
1927 opts_prog = Perl_newSVpvf(aTHX_
1928 "use Config; Config::config_vars(qw%c%s%c)",
1932 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1933 /* don't look for script or read stdin */
1934 scriptname = BIT_BUCKET;
1946 if (!*++s || isSPACE(*s)) {
1950 /* catch use of gnu style long options.
1951 Both of these exit immediately. */
1952 if (strEQ(s, "version"))
1954 if (strEQ(s, "help"))
1959 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1970 #ifndef SECURE_INTERNAL_GETENV
1973 (s = PerlEnv_getenv("PERL5OPT")))
1977 if (*s == '-' && *(s+1) == 'T') {
1978 CHECK_MALLOC_TOO_LATE_FOR('T');
1980 PL_taint_warn = FALSE;
1983 char *popt_copy = NULL;
1996 if (!strchr("CDIMUdmtwW", *s))
1997 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2001 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2002 s = popt_copy + (s - d);
2010 if( !PL_tainting ) {
2011 PL_taint_warn = TRUE;
2022 /* Set $^X early so that it can be used for relocatable paths in @INC */
2023 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2024 assert (!PL_tainted);
2026 S_set_caret_X(aTHX);
2029 #if defined(USE_SITECUSTOMIZE)
2031 /* The games with local $! are to avoid setting errno if there is no
2032 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2033 ie a q() operator with a NUL byte as a the delimiter. This avoids
2034 problems with pathnames containing (say) ' */
2035 # ifdef PERL_IS_MINIPERL
2036 AV *const inc = GvAV(PL_incgv);
2037 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2040 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2042 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2047 /* SITELIB_EXP is a function call on Win32. */
2048 const char *const raw_sitelib = SITELIB_EXP;
2050 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2051 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2052 INCPUSH_CAN_RELOCATE);
2053 const char *const sitelib = SvPVX(sitelib_sv);
2054 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2056 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2059 assert (SvREFCNT(sitelib_sv) == 1);
2060 SvREFCNT_dec(sitelib_sv);
2067 scriptname = argv[0];
2070 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2072 else if (scriptname == NULL) {
2074 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2080 assert (!PL_tainted);
2084 bool suidscript = FALSE;
2086 rsfp = open_script(scriptname, dosearch, &suidscript);
2088 rsfp = PerlIO_stdin();
2089 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2092 validate_suid(rsfp);
2095 # if defined(SIGCHLD) || defined(SIGCLD)
2098 # define SIGCHLD SIGCLD
2100 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2101 if (sigstate == (Sighandler_t) SIG_IGN) {
2102 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2103 "Can't ignore signal CHLD, forcing to default");
2104 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2112 /* This will croak if suidscript is true, as -x cannot be used with
2114 forbid_setid('x', suidscript);
2115 /* Hence you can't get here if suidscript is true */
2117 linestr_sv = newSV_type(SVt_PV);
2118 lex_start_flags |= LEX_START_COPIED;
2119 find_beginning(linestr_sv, rsfp);
2120 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2121 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2125 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2126 CvUNIQUE_on(PL_compcv);
2128 CvPADLIST(PL_compcv) = pad_new(0);
2130 PL_isarev = newHV();
2133 boot_core_UNIVERSAL();
2135 newXS("Internals::V", S_Internals_V, __FILE__);
2138 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2140 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
2146 # ifdef HAS_SOCKS5_INIT
2147 socks5_init(argv[0]);
2153 init_predump_symbols();
2154 /* init_postdump_symbols not currently designed to be called */
2155 /* more than once (ENV isn't cleared first, for example) */
2156 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2158 init_postdump_symbols(argc,argv,env);
2160 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2161 * or explicitly in some platforms.
2162 * locale.c:Perl_init_i18nl10n() if the environment
2163 * look like the user wants to use UTF-8. */
2164 #if defined(__SYMBIAN32__)
2165 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2167 # ifndef PERL_IS_MINIPERL
2169 /* Requires init_predump_symbols(). */
2170 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2175 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2176 * and the default open disciplines. */
2177 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2178 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2180 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2181 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2182 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2184 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2185 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2186 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2188 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2189 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2190 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2192 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2193 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2196 sv_setpvs(sv, ":utf8\0:utf8");
2198 sv_setpvs(sv, ":utf8\0");
2201 sv_setpvs(sv, "\0:utf8");
2210 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2211 if (strEQ(s, "unsafe"))
2212 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2213 else if (strEQ(s, "safe"))
2214 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2216 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2223 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2227 PL_xmlfp = PerlIO_stdout();
2229 PL_xmlfp = PerlIO_open(s, "w");
2231 Perl_croak(aTHX_ "Can't open %s", s);
2233 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2239 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2240 PL_madskills = atoi(s);
2241 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2246 lex_start(linestr_sv, rsfp, lex_start_flags);
2248 SvREFCNT_dec(linestr_sv);
2250 PL_subname = newSVpvs("main");
2252 if (add_read_e_script)
2253 filter_add(read_e_script, NULL);
2255 /* now parse the script */
2257 SETERRNO(0,SS_NORMAL);
2258 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2260 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2262 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2266 CopLINE_set(PL_curcop, 0);
2267 SET_CURSTASH(PL_defstash);
2269 SvREFCNT_dec(PL_e_script);
2277 SAVECOPFILE(PL_curcop);
2278 SAVECOPLINE(PL_curcop);
2279 gv_check(PL_defstash);
2288 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2289 dump_mstats("after compilation:");
2294 PL_restartjmpenv = NULL;
2300 =for apidoc perl_run
2302 Tells a Perl interpreter to run. See L<perlembed>.
2315 PERL_ARGS_ASSERT_PERL_RUN;
2316 #ifndef MULTIPLICITY
2317 PERL_UNUSED_ARG(my_perl);
2320 oldscope = PL_scopestack_ix;
2328 cxstack_ix = -1; /* start context stack again */
2330 case 0: /* normal completion */
2334 case 2: /* my_exit() */
2335 while (PL_scopestack_ix > oldscope)
2338 SET_CURSTASH(PL_defstash);
2339 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2340 PL_endav && !PL_minus_c) {
2341 PERL_SET_PHASE(PERL_PHASE_END);
2342 call_list(oldscope, PL_endav);
2345 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2346 dump_mstats("after execution: ");
2352 POPSTACK_TO(PL_mainstack);
2355 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2366 S_run_body(pTHX_ I32 oldscope)
2369 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
2370 PL_sawampersand ? "Enabling" : "Omitting"));
2372 if (!PL_restartop) {
2376 exit(0); /* less likely to core dump than my_exit(0) */
2380 if (DEBUG_x_TEST || DEBUG_B_TEST)
2381 dump_all_perl(!DEBUG_B_TEST);
2383 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2387 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2390 if (PERLDB_SINGLE && PL_DBsingle)
2391 sv_setiv(PL_DBsingle, 1);
2393 PERL_SET_PHASE(PERL_PHASE_INIT);
2394 call_list(oldscope, PL_initav);
2396 #ifdef PERL_DEBUG_READONLY_OPS
2397 Perl_pending_Slabs_to_ro(aTHX);
2403 PERL_SET_PHASE(PERL_PHASE_RUN);
2406 PL_restartjmpenv = NULL;
2407 PL_op = PL_restartop;
2411 else if (PL_main_start) {
2412 CvDEPTH(PL_main_cv) = 1;
2413 PL_op = PL_main_start;
2417 assert(0); /* NOTREACHED */
2421 =head1 SV Manipulation Functions
2423 =for apidoc p||get_sv
2425 Returns the SV of the specified Perl scalar. C<flags> are passed to
2426 C<gv_fetchpv>. If C<GV_ADD> is set and the
2427 Perl variable does not exist then it will be created. If C<flags> is zero
2428 and the variable does not exist then NULL is returned.
2434 Perl_get_sv(pTHX_ const char *name, I32 flags)
2438 PERL_ARGS_ASSERT_GET_SV;
2440 gv = gv_fetchpv(name, flags, SVt_PV);
2447 =head1 Array Manipulation Functions
2449 =for apidoc p||get_av
2451 Returns the AV of the specified Perl global or package array with the given
2452 name (so it won't work on lexical variables). C<flags> are passed
2453 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2454 Perl variable does not exist then it will be created. If C<flags> is zero
2455 and the variable does not exist then NULL is returned.
2457 Perl equivalent: C<@{"$name"}>.
2463 Perl_get_av(pTHX_ const char *name, I32 flags)
2465 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2467 PERL_ARGS_ASSERT_GET_AV;
2477 =head1 Hash Manipulation Functions
2479 =for apidoc p||get_hv
2481 Returns the HV of the specified Perl hash. C<flags> are passed to
2482 C<gv_fetchpv>. If C<GV_ADD> is set and the
2483 Perl variable does not exist then it will be created. If C<flags> is zero
2484 and the variable does not exist then NULL is returned.
2490 Perl_get_hv(pTHX_ const char *name, I32 flags)
2492 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2494 PERL_ARGS_ASSERT_GET_HV;
2504 =head1 CV Manipulation Functions
2506 =for apidoc p||get_cvn_flags
2508 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2509 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2510 exist then it will be declared (which has the same effect as saying
2511 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2512 then NULL is returned.
2514 =for apidoc p||get_cv
2516 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2522 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2524 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2526 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2528 /* XXX this is probably not what they think they're getting.
2529 * It has the same effect as "sub name;", i.e. just a forward
2531 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2532 return newSTUB(gv,0);
2539 /* Nothing in core calls this now, but we can't replace it with a macro and
2540 move it to mathoms.c as a macro would evaluate name twice. */
2542 Perl_get_cv(pTHX_ const char *name, I32 flags)
2544 PERL_ARGS_ASSERT_GET_CV;
2546 return get_cvn_flags(name, strlen(name), flags);
2549 /* Be sure to refetch the stack pointer after calling these routines. */
2553 =head1 Callback Functions
2555 =for apidoc p||call_argv
2557 Performs a callback to the specified named and package-scoped Perl subroutine
2558 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2560 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2566 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
2568 /* See G_* flags in cop.h */
2569 /* null terminated arg list */
2574 PERL_ARGS_ASSERT_CALL_ARGV;
2579 mXPUSHs(newSVpv(*argv,0));
2584 return call_pv(sub_name, flags);
2588 =for apidoc p||call_pv
2590 Performs a callback to the specified Perl sub. See L<perlcall>.
2596 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2597 /* name of the subroutine */
2598 /* See G_* flags in cop.h */
2600 PERL_ARGS_ASSERT_CALL_PV;
2602 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2606 =for apidoc p||call_method
2608 Performs a callback to the specified Perl method. The blessed object must
2609 be on the stack. See L<perlcall>.
2615 Perl_call_method(pTHX_ const char *methname, I32 flags)
2616 /* name of the subroutine */
2617 /* See G_* flags in cop.h */
2620 PERL_ARGS_ASSERT_CALL_METHOD;
2622 len = strlen(methname);
2624 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2625 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2628 /* May be called with any of a CV, a GV, or an SV containing the name. */
2630 =for apidoc p||call_sv
2632 Performs a callback to the Perl sub whose name is in the SV. See
2639 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2640 /* See G_* flags in cop.h */
2643 LOGOP myop; /* fake syntax tree node */
2648 bool oldcatch = CATCH_GET;
2650 OP* const oldop = PL_op;
2653 PERL_ARGS_ASSERT_CALL_SV;
2655 if (flags & G_DISCARD) {
2659 if (!(flags & G_WANT)) {
2660 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2665 Zero(&myop, 1, LOGOP);
2666 myop.op_next = NULL;
2667 if (!(flags & G_NOARGS))
2668 myop.op_flags |= OPf_STACKED;
2669 myop.op_flags |= OP_GIMME_REVERSE(flags);
2673 EXTEND(PL_stack_sp, 1);
2674 *++PL_stack_sp = sv;
2676 oldscope = PL_scopestack_ix;
2678 if (PERLDB_SUB && PL_curstash != PL_debstash
2679 /* Handle first BEGIN of -d. */
2680 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2681 /* Try harder, since this may have been a sighandler, thus
2682 * curstash may be meaningless. */
2683 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2684 && !(flags & G_NODEBUG))
2685 PL_op->op_private |= OPpENTERSUB_DB;
2687 if (flags & G_METHOD) {
2688 Zero(&method_op, 1, UNOP);
2689 method_op.op_next = PL_op;
2690 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2691 method_op.op_type = OP_METHOD;
2692 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2693 myop.op_type = OP_ENTERSUB;
2694 PL_op = (OP*)&method_op;
2697 if (!(flags & G_EVAL)) {
2699 CALL_BODY_SUB((OP*)&myop);
2700 retval = PL_stack_sp - (PL_stack_base + oldmark);
2701 CATCH_SET(oldcatch);
2704 myop.op_other = (OP*)&myop;
2706 create_eval_scope(flags|G_FAKINGEVAL);
2714 CALL_BODY_SUB((OP*)&myop);
2715 retval = PL_stack_sp - (PL_stack_base + oldmark);
2716 if (!(flags & G_KEEPERR)) {
2724 /* my_exit() was called */
2725 SET_CURSTASH(PL_defstash);
2729 assert(0); /* NOTREACHED */
2732 PL_restartjmpenv = NULL;
2733 PL_op = PL_restartop;
2737 PL_stack_sp = PL_stack_base + oldmark;
2738 if ((flags & G_WANT) == G_ARRAY)
2742 *++PL_stack_sp = &PL_sv_undef;
2747 if (PL_scopestack_ix > oldscope)
2748 delete_eval_scope();
2752 if (flags & G_DISCARD) {
2753 PL_stack_sp = PL_stack_base + oldmark;
2762 /* Eval a string. The G_EVAL flag is always assumed. */
2765 =for apidoc p||eval_sv
2767 Tells Perl to C<eval> the string in the SV. It supports the same flags
2768 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2774 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2776 /* See G_* flags in cop.h */
2780 UNOP myop; /* fake syntax tree node */
2781 VOL I32 oldmark = SP - PL_stack_base;
2784 OP* const oldop = PL_op;
2787 PERL_ARGS_ASSERT_EVAL_SV;
2789 if (flags & G_DISCARD) {
2796 Zero(PL_op, 1, UNOP);
2797 EXTEND(PL_stack_sp, 1);
2798 *++PL_stack_sp = sv;
2800 if (!(flags & G_NOARGS))
2801 myop.op_flags = OPf_STACKED;
2802 myop.op_next = NULL;
2803 myop.op_type = OP_ENTEREVAL;
2804 myop.op_flags |= OP_GIMME_REVERSE(flags);
2805 if (flags & G_KEEPERR)
2806 myop.op_flags |= OPf_SPECIAL;
2807 if (PL_reg_state.re_reparsing)
2808 myop.op_private = OPpEVAL_COPHH;
2810 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2811 * before a PUSHEVAL, which corrupts the stack after a croak */
2812 TAINT_PROPER("eval_sv()");
2818 if (PL_op == (OP*)(&myop)) {
2819 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2821 goto fail; /* failed in compilation */
2824 retval = PL_stack_sp - (PL_stack_base + oldmark);
2825 if (!(flags & G_KEEPERR)) {
2833 /* my_exit() was called */
2834 SET_CURSTASH(PL_defstash);
2838 assert(0); /* NOTREACHED */
2841 PL_restartjmpenv = NULL;
2842 PL_op = PL_restartop;
2847 PL_stack_sp = PL_stack_base + oldmark;
2848 if ((flags & G_WANT) == G_ARRAY)
2852 *++PL_stack_sp = &PL_sv_undef;
2858 if (flags & G_DISCARD) {
2859 PL_stack_sp = PL_stack_base + oldmark;
2869 =for apidoc p||eval_pv
2871 Tells Perl to C<eval> the given string and return an SV* result.
2877 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2881 SV* sv = newSVpv(p, 0);
2883 PERL_ARGS_ASSERT_EVAL_PV;
2885 eval_sv(sv, G_SCALAR);
2892 if (croak_on_error && SvTRUE(ERRSV)) {
2893 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2899 /* Require a module. */
2902 =head1 Embedding Functions
2904 =for apidoc p||require_pv
2906 Tells Perl to C<require> the file named by the string argument. It is
2907 analogous to the Perl code C<eval "require '$file'">. It's even
2908 implemented that way; consider using load_module instead.
2913 Perl_require_pv(pTHX_ const char *pv)
2919 PERL_ARGS_ASSERT_REQUIRE_PV;
2921 PUSHSTACKi(PERLSI_REQUIRE);
2923 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2924 eval_sv(sv_2mortal(sv), G_DISCARD);
2930 S_usage(pTHX) /* XXX move this out into a module ? */
2932 /* This message really ought to be max 23 lines.
2933 * Removed -h because the user already knows that option. Others? */
2935 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2936 minimum of 509 character string literals. */
2937 static const char * const usage_msg[] = {
2938 " -0[octal] specify record separator (\\0, if no argument)\n"
2939 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2940 " -C[number/list] enables the listed Unicode features\n"
2941 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2942 " -d[:debugger] run program under debugger\n"
2943 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2944 " -e program one line of program (several -e's allowed, omit programfile)\n"
2945 " -E program like -e, but enables all optional features\n"
2946 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2947 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2948 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2949 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2950 " -l[octal] enable line ending processing, specifies line terminator\n"
2951 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2952 " -n assume \"while (<>) { ... }\" loop around program\n"
2953 " -p assume loop like -n but print line also, like sed\n"
2954 " -s enable rudimentary parsing for switches after programfile\n"
2955 " -S look for programfile using PATH environment variable\n",
2956 " -t enable tainting warnings\n"
2957 " -T enable tainting checks\n"
2958 " -u dump core after parsing program\n"
2959 " -U allow unsafe operations\n"
2960 " -v print version, patchlevel and license\n"
2961 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2962 " -w enable many useful warnings\n"
2963 " -W enable all warnings\n"
2964 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2965 " -X disable all warnings\n"
2967 "Run 'perldoc perl' for more help with Perl.\n\n",
2970 const char * const *p = usage_msg;
2971 PerlIO *out = PerlIO_stdout();
2974 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2977 PerlIO_puts(out, *p++);
2981 /* convert a string of -D options (or digits) into an int.
2982 * sets *s to point to the char after the options */
2986 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
2988 static const char * const usage_msgd[] = {
2989 " Debugging flag values: (see also -d)\n"
2990 " p Tokenizing and parsing (with v, displays parse stack)\n"
2991 " s Stack snapshots (with v, displays all stacks)\n"
2992 " l Context (loop) stack processing\n"
2993 " t Trace execution\n"
2994 " o Method and overloading resolution\n",
2995 " c String/numeric conversions\n"
2996 " P Print profiling info, source file input state\n"
2997 " m Memory and SV allocation\n"
2998 " f Format processing\n"
2999 " r Regular expression parsing and execution\n"
3000 " x Syntax tree dump\n",
3001 " u Tainting checks\n"
3002 " H Hash dump -- usurps values()\n"
3003 " X Scratchpad allocation\n"
3005 " S Op slab allocation\n"
3007 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3008 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3009 " v Verbose: use in conjunction with other flags\n"
3010 " C Copy On Write\n"
3011 " A Consistency checks on internal structures\n"
3012 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3013 " M trace smart match resolution\n"
3014 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3019 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3022 /* if adding extra options, remember to update DEBUG_MASK */
3023 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
3025 for (; isALNUM(**s); (*s)++) {
3026 const char * const d = strchr(debopts,**s);
3028 i |= 1 << (d - debopts);
3029 else if (ckWARN_d(WARN_DEBUGGING))
3030 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3031 "invalid option -D%c, use -D'' to see choices\n", **s);
3034 else if (isDIGIT(**s)) {
3036 for (; isALNUM(**s); (*s)++) ;
3038 else if (givehelp) {
3039 const char *const *p = usage_msgd;
3040 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3043 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3044 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3045 "-Dp not implemented on this platform\n");
3051 /* This routine handles any switches that can be given during run */
3054 Perl_moreswitches(pTHX_ const char *s)
3058 const char option = *s; /* used to remember option in -m/-M code */
3060 PERL_ARGS_ASSERT_MORESWITCHES;
3068 SvREFCNT_dec(PL_rs);
3069 if (s[1] == 'x' && s[2]) {
3070 const char *e = s+=2;
3076 flags = PERL_SCAN_SILENT_ILLDIGIT;
3077 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3078 if (s + numlen < e) {
3079 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3083 PL_rs = newSVpvs("");
3084 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3085 tmps = (U8*)SvPVX(PL_rs);
3086 uvchr_to_utf8(tmps, rschar);
3087 SvCUR_set(PL_rs, UNISKIP(rschar));
3092 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3093 if (rschar & ~((U8)~0))
3094 PL_rs = &PL_sv_undef;
3095 else if (!rschar && numlen >= 2)
3096 PL_rs = newSVpvs("");
3098 char ch = (char)rschar;
3099 PL_rs = newSVpvn(&ch, 1);
3102 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3107 PL_unicode = parse_unicode_opts( (const char **)&s );
3108 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3114 while (*s && !isSPACE(*s)) ++s;
3115 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3126 forbid_setid('d', FALSE);
3129 /* -dt indicates to the debugger that threads will be used */
3130 if (*s == 't' && !isALNUM(s[1])) {
3132 my_setenv("PERL5DB_THREADED", "1");
3135 /* The following permits -d:Mod to accepts arguments following an =
3136 in the fashion that -MSome::Mod does. */
3137 if (*s == ':' || *s == '=') {
3144 sv = newSVpvs("no Devel::");
3146 sv = newSVpvs("use Devel::");
3150 end = s + strlen(s);
3152 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3153 while(isALNUM(*s) || *s==':') ++s;
3155 sv_catpvn(sv, start, end - start);
3157 sv_catpvn(sv, start, s-start);
3158 /* Don't use NUL as q// delimiter here, this string goes in the
3160 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3163 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3167 PL_perldb = PERLDB_ALL;
3174 forbid_setid('D', FALSE);
3176 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3177 #else /* !DEBUGGING */
3178 if (ckWARN_d(WARN_DEBUGGING))
3179 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3180 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3181 for (s++; isALNUM(*s); s++) ;
3188 Safefree(PL_inplace);
3189 #if defined(__CYGWIN__) /* do backup extension automagically */
3190 if (*(s+1) == '\0') {
3191 PL_inplace = savepvs(".bak");
3194 #endif /* __CYGWIN__ */
3196 const char * const start = ++s;
3197 while (*s && !isSPACE(*s))
3200 PL_inplace = savepvn(start, s - start);
3204 if (*s == '-') /* Additional switches on #! line. */
3208 case 'I': /* -I handled both here and in parse_body() */
3209 forbid_setid('I', FALSE);
3211 while (*s && isSPACE(*s))
3216 /* ignore trailing spaces (possibly followed by other switches) */
3218 for (e = p; *e && !isSPACE(*e); e++) ;
3222 } while (*p && *p != '-');
3224 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3230 Perl_croak(aTHX_ "No directory specified for -I");
3236 SvREFCNT_dec(PL_ors_sv);
3242 PL_ors_sv = newSVpvs("\n");
3243 numlen = 3 + (*s == '0');
3244 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3248 if (RsPARA(PL_rs)) {
3249 PL_ors_sv = newSVpvs("\n\n");
3252 PL_ors_sv = newSVsv(PL_rs);
3257 forbid_setid('M', FALSE); /* XXX ? */
3260 forbid_setid('m', FALSE); /* XXX ? */
3265 const char *use = "use ";
3267 /* -M-foo == 'no foo' */
3268 /* Leading space on " no " is deliberate, to make both
3269 possibilities the same length. */
3270 if (*s == '-') { use = " no "; ++s; }
3271 sv = newSVpvn(use,4);
3273 /* We allow -M'Module qw(Foo Bar)' */
3274 while(isALNUM(*s) || *s==':') {
3283 Perl_croak(aTHX_ "Module name required with -%c option",
3286 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3287 "contains single ':'",
3288 (int)(s - start), start, option);
3289 end = s + strlen(s);
3291 sv_catpvn(sv, start, end - start);
3292 if (option == 'm') {
3294 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3295 sv_catpvs( sv, " ()");
3298 sv_catpvn(sv, start, s-start);
3299 /* Use NUL as q''-delimiter. */
3300 sv_catpvs(sv, " split(/,/,q\0");
3302 sv_catpvn(sv, s, end - s);
3303 sv_catpvs(sv, "\0)");
3306 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3309 Perl_croak(aTHX_ "Missing argument to -%c", option);
3320 forbid_setid('s', FALSE);
3321 PL_doswitches = TRUE;
3331 PL_do_undump = TRUE;
3341 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3342 PL_dowarn |= G_WARN_ON;
3347 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3348 if (!specialWARN(PL_compiling.cop_warnings))
3349 PerlMemShared_free(PL_compiling.cop_warnings);
3350 PL_compiling.cop_warnings = pWARN_ALL ;
3354 PL_dowarn = G_WARN_ALL_OFF;
3355 if (!specialWARN(PL_compiling.cop_warnings))
3356 PerlMemShared_free(PL_compiling.cop_warnings);
3357 PL_compiling.cop_warnings = pWARN_NONE ;
3364 if (s[0] == '-') /* Additional switches on #! line. */
3369 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3375 #ifdef ALTERNATE_SHEBANG
3376 case 'S': /* OS/2 needs -S on "extproc" line. */
3379 case 'e': case 'f': case 'x': case 'E':
3380 #ifndef ALTERNATE_SHEBANG
3384 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3387 "Unrecognized switch: -%.1s (-h will show valid options)",s
3397 if (!sv_derived_from(PL_patchlevel, "version"))
3398 upg_version(PL_patchlevel, TRUE);
3401 SV* level= vstringify(PL_patchlevel);
3402 #ifdef PERL_PATCHNUM
3403 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3404 SV *num = newSVpvs(PERL_PATCHNUM "*");
3406 SV *num = newSVpvs(PERL_PATCHNUM);
3409 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3410 SvREFCNT_dec(level);
3413 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3417 PerlIO_printf(PerlIO_stdout(),
3418 "\nThis is perl " STRINGIFY(PERL_REVISION)
3419 ", version " STRINGIFY(PERL_VERSION)
3420 ", subversion " STRINGIFY(PERL_SUBVERSION)
3421 " (%"SVf") built for " ARCHNAME, level
3423 SvREFCNT_dec(level);
3426 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3427 PerlIO_printf(PerlIO_stdout(),
3428 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3429 SVfARG(vstringify(PL_patchlevel))));
3430 PerlIO_printf(PerlIO_stdout(),
3431 Perl_form(aTHX_ " built under %s at %s %s\n",
3432 OSNAME, __DATE__, __TIME__));
3433 PerlIO_printf(PerlIO_stdout(),
3434 Perl_form(aTHX_ " OS Specific Release: %s\n",
3437 #if defined(LOCAL_PATCH_COUNT)
3438 if (LOCAL_PATCH_COUNT > 0)
3439 PerlIO_printf(PerlIO_stdout(),
3440 "\n(with %d registered patch%s, "
3441 "see perl -V for more detail)",
3443 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3446 PerlIO_printf(PerlIO_stdout(),
3447 "\n\nCopyright 1987-2012, Larry Wall\n");
3449 PerlIO_printf(PerlIO_stdout(),
3450 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3453 PerlIO_printf(PerlIO_stdout(),
3454 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3455 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3458 PerlIO_printf(PerlIO_stdout(),
3459 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3460 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3463 PerlIO_printf(PerlIO_stdout(),
3464 "atariST series port, ++jrb bammi@cadence.com\n");
3467 PerlIO_printf(PerlIO_stdout(),
3468 "BeOS port Copyright Tom Spindler, 1997-1999\n");
3471 PerlIO_printf(PerlIO_stdout(),
3472 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
3475 PerlIO_printf(PerlIO_stdout(),
3476 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3479 PerlIO_printf(PerlIO_stdout(),
3480 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3483 PerlIO_printf(PerlIO_stdout(),
3484 "VM/ESA port by Neale Ferguson, 1998-1999\n");
3487 PerlIO_printf(PerlIO_stdout(),
3488 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3491 PerlIO_printf(PerlIO_stdout(),
3492 "EPOC port by Olaf Flebbe, 1999-2002\n");
3495 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3496 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
3499 #ifdef __SYMBIAN32__
3500 PerlIO_printf(PerlIO_stdout(),
3501 "Symbian port by Nokia, 2004-2005\n");
3503 #ifdef BINARY_BUILD_NOTICE
3504 BINARY_BUILD_NOTICE;
3506 PerlIO_printf(PerlIO_stdout(),
3508 Perl may be copied only under the terms of either the Artistic License or the\n\
3509 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3510 Complete documentation for Perl, including FAQ lists, should be found on\n\
3511 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3512 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3516 /* compliments of Tom Christiansen */
3518 /* unexec() can be found in the Gnu emacs distribution */
3519 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3522 #include <lib$routines.h>
3526 Perl_my_unexec(pTHX)
3528 PERL_UNUSED_CONTEXT;
3530 SV * prog = newSVpv(BIN_EXP, 0);
3531 SV * file = newSVpv(PL_origfilename, 0);
3535 sv_catpvs(prog, "/perl");
3536 sv_catpvs(file, ".perldump");
3538 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3539 /* unexec prints msg to stderr in case of failure */
3540 PerlProc_exit(status);
3543 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3544 # elif defined(WIN32) || defined(__CYGWIN__)
3545 Perl_croak(aTHX_ "dump is not supported");
3547 ABORT(); /* for use with undump */
3552 /* initialize curinterp */
3558 # define PERLVAR(prefix,var,type)
3559 # define PERLVARA(prefix,var,n,type)
3560 # if defined(PERL_IMPLICIT_CONTEXT)
3561 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3562 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3564 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3565 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3567 # include "intrpvar.h"
3573 # define PERLVAR(prefix,var,type)
3574 # define PERLVARA(prefix,var,n,type)
3575 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3576 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3577 # include "intrpvar.h"
3584 /* As these are inside a structure, PERLVARI isn't capable of initialising
3586 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3587 PL_reg_poscache = PL_reg_starttry = NULL;
3591 S_init_main_stash(pTHX)
3596 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3597 /* We know that the string "main" will be in the global shared string
3598 table, so it's a small saving to use it rather than allocate another
3600 PL_curstname = newSVpvs_share("main");
3601 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3602 /* If we hadn't caused another reference to "main" to be in the shared
3603 string table above, then it would be worth reordering these two,
3604 because otherwise all we do is delete "main" from it as a consequence
3605 of the SvREFCNT_dec, only to add it again with hv_name_set */
3606 SvREFCNT_dec(GvHV(gv));
3607 hv_name_set(PL_defstash, "main", 4, 0);
3608 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3610 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3612 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3613 GvMULTI_on(PL_incgv);
3614 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3615 GvMULTI_on(PL_hintgv);
3616 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3617 SvREFCNT_inc_simple_void(PL_defgv);
3618 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3619 SvREFCNT_inc_simple_void(PL_errgv);
3620 GvMULTI_on(PL_errgv);
3621 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3622 GvMULTI_on(PL_replgv);
3623 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3624 #ifdef PERL_DONT_CREATE_GVSV
3627 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3629 SET_CURSTASH(PL_defstash);
3630 CopSTASH_set(&PL_compiling, PL_defstash);
3631 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3632 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3634 /* We must init $/ before switches are processed. */
3635 sv_setpvs(get_sv("/", GV_ADD), "\n");
3639 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3642 PerlIO *rsfp = NULL;
3645 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3648 PL_origfilename = savepvs("-e");
3651 /* if find_script() returns, it returns a malloc()-ed value */
3652 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3654 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3655 const char *s = scriptname + 8;
3661 * Tell apart "normal" usage of fdscript, e.g.
3662 * with bash on FreeBSD:
3663 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3664 * from usage in suidperl.
3665 * Does any "normal" usage leave garbage after the number???
3666 * Is it a mistake to use a similar /dev/fd/ construct for
3671 * Be supersafe and do some sanity-checks.
3672 * Still, can we be sure we got the right thing?
3675 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3678 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3680 scriptname = savepv(s + 1);
3681 Safefree(PL_origfilename);
3682 PL_origfilename = (char *)scriptname;
3687 CopFILE_free(PL_curcop);
3688 CopFILE_set(PL_curcop, PL_origfilename);
3689 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3690 scriptname = (char *)"";
3691 if (fdscript >= 0) {
3692 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3694 else if (!*scriptname) {
3695 forbid_setid(0, *suidscript);
3699 #ifdef FAKE_BIT_BUCKET
3700 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3701 * is called) and still have the "-e" work. (Believe it or not,
3702 * a /dev/null is required for the "-e" to work because source
3703 * filter magic is used to implement it. ) This is *not* a general
3704 * replacement for a /dev/null. What we do here is create a temp
3705 * file (an empty file), open up that as the script, and then
3706 * immediately close and unlink it. Close enough for jazz. */
3707 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3708 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3709 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3710 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3711 FAKE_BIT_BUCKET_TEMPLATE
3713 const char * const err = "Failed to create a fake bit bucket";
3714 if (strEQ(scriptname, BIT_BUCKET)) {
3715 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3716 int tmpfd = mkstemp(tmpname);
3718 scriptname = tmpname;
3721 Perl_croak(aTHX_ err);
3724 scriptname = mktemp(tmpname);
3726 Perl_croak(aTHX_ err);
3731 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3732 #ifdef FAKE_BIT_BUCKET
3733 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3734 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3735 && strlen(scriptname) == sizeof(tmpname) - 1) {
3738 scriptname = BIT_BUCKET;
3742 /* PSz 16 Sep 03 Keep neat error message */
3744 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3746 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3747 CopFILE(PL_curcop), Strerror(errno));
3749 #if defined(HAS_FCNTL) && defined(F_SETFD)
3750 /* ensure close-on-exec */
3751 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3757 * I_SYSSTATVFS HAS_FSTATVFS
3759 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3760 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3761 * here so that metaconfig picks them up. */
3764 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3765 /* Don't even need this function. */
3768 S_validate_suid(pTHX_ PerlIO *rsfp)
3770 const UV my_uid = PerlProc_getuid();
3771 const UV my_euid = PerlProc_geteuid();
3772 const UV my_gid = PerlProc_getgid();
3773 const UV my_egid = PerlProc_getegid();
3775 PERL_ARGS_ASSERT_VALIDATE_SUID;
3777 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3780 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3781 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3783 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3786 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3787 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3788 /* not set-id, must be wrapped */
3791 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3794 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3798 register const char *s2;
3800 PERL_ARGS_ASSERT_FIND_BEGINNING;
3802 /* skip forward in input to the real script? */
3805 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3806 Perl_croak(aTHX_ "No Perl script found in input\n");
3808 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3809 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3810 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3812 while (*s == ' ' || *s == '\t') s++;
3814 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3815 || s2[-1] == '_') s2--;
3816 if (strnEQ(s2-4,"perl",4))
3817 while ((s = moreswitches(s)))
3827 const UV my_uid = PerlProc_getuid();
3828 const UV my_euid = PerlProc_geteuid();
3829 const UV my_gid = PerlProc_getgid();
3830 const UV my_egid = PerlProc_getegid();
3832 /* Should not happen: */
3833 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3834 PL_tainting |= (my_uid && (my_euid != my_uid || my_egid != my_gid));
3837 * Should go by suidscript, not uid!=euid: why disallow
3838 * system("ls") in scripts run from setuid things?
3839 * Or, is this run before we check arguments and set suidscript?
3840 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3841 * (We never have suidscript, can we be sure to have fdscript?)
3842 * Or must then go by UID checks? See comments in forbid_setid also.
3846 /* This is used very early in the lifetime of the program,
3847 * before even the options are parsed, so PL_tainting has
3848 * not been initialized properly. */
3850 Perl_doing_taint(int argc, char *argv[], char *envp[])
3852 #ifndef PERL_IMPLICIT_SYS
3853 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3854 * before we have an interpreter-- and the whole point of this
3855 * function is to be called at such an early stage. If you are on
3856 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3857 * "tainted because running with altered effective ids', you'll
3858 * have to add your own checks somewhere in here. The two most
3859 * known samples of 'implicitness' are Win32 and NetWare, neither
3860 * of which has much of concept of 'uids'. */
3861 int uid = PerlProc_getuid();
3862 int euid = PerlProc_geteuid();
3863 int gid = PerlProc_getgid();
3864 int egid = PerlProc_getegid();
3871 if (uid && (euid != uid || egid != gid))
3873 #endif /* !PERL_IMPLICIT_SYS */
3874 /* This is a really primitive check; environment gets ignored only
3875 * if -T are the first chars together; otherwise one gets
3876 * "Too late" message. */
3877 if ( argc > 1 && argv[1][0] == '-'
3878 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3883 /* Passing the flag as a single char rather than a string is a slight space
3884 optimisation. The only message that isn't /^-.$/ is
3885 "program input from stdin", which is substituted in place of '\0', which
3886 could never be a command line flag. */
3888 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3891 char string[3] = "-x";
3892 const char *message = "program input from stdin";
3899 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3900 if (PerlProc_getuid() != PerlProc_geteuid())
3901 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3902 if (PerlProc_getgid() != PerlProc_getegid())
3903 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3904 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3906 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3910 Perl_init_dbargs(pTHX)
3912 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3917 /* Someone has already created it.
3918 It might have entries, and if we just turn off AvREAL(), they will
3919 "leak" until global destruction. */
3921 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3922 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3924 AvREIFY_only(PL_dbargs);
3928 Perl_init_debugger(pTHX)
3931 HV * const ostash = PL_curstash;
3933 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3935 Perl_init_dbargs(aTHX);
3936 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3937 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3938 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3939 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3940 if (!SvIOK(PL_DBsingle))
3941 sv_setiv(PL_DBsingle, 0);
3942 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3943 if (!SvIOK(PL_DBtrace))
3944 sv_setiv(PL_DBtrace, 0);
3945 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3946 if (!SvIOK(PL_DBsignal))
3947 sv_setiv(PL_DBsignal, 0);
3948 SvREFCNT_dec(PL_curstash);
3949 PL_curstash = ostash;
3952 #ifndef STRESS_REALLOC
3953 #define REASONABLE(size) (size)
3955 #define REASONABLE(size) (1) /* unreasonable */
3959 Perl_init_stacks(pTHX)
3962 /* start with 128-item stack and 8K cxstack */
3963 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3964 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3965 PL_curstackinfo->si_type = PERLSI_MAIN;
3966 PL_curstack = PL_curstackinfo->si_stack;
3967 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3969 PL_stack_base = AvARRAY(PL_curstack);
3970 PL_stack_sp = PL_stack_base;
3971 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3973 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3976 PL_tmps_max = REASONABLE(128);
3978 Newx(PL_markstack,REASONABLE(32),I32);
3979 PL_markstack_ptr = PL_markstack;
3980 PL_markstack_max = PL_markstack + REASONABLE(32);
3984 Newx(PL_scopestack,REASONABLE(32),I32);
3986 Newx(PL_scopestack_name,REASONABLE(32),const char*);
3988 PL_scopestack_ix = 0;
3989 PL_scopestack_max = REASONABLE(32);
3991 Newx(PL_savestack,REASONABLE(128),ANY);
3992 PL_savestack_ix = 0;
3993 PL_savestack_max = REASONABLE(128);
4002 while (PL_curstackinfo->si_next)
4003 PL_curstackinfo = PL_curstackinfo->si_next;
4004 while (PL_curstackinfo) {
4005 PERL_SI *p = PL_curstackinfo->si_prev;
4006 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4007 Safefree(PL_curstackinfo->si_cxstack);
4008 Safefree(PL_curstackinfo);
4009 PL_curstackinfo = p;
4011 Safefree(PL_tmps_stack);
4012 Safefree(PL_markstack);
4013 Safefree(PL_scopestack);
4015 Safefree(PL_scopestack_name);
4017 Safefree(PL_savestack);
4021 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4023 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4024 AV *const isa = GvAVn(gv);
4027 PERL_ARGS_ASSERT_POPULATE_ISA;
4029 if(AvFILLp(isa) != -1)
4032 /* NOTE: No support for tied ISA */
4034 va_start(args, len);
4036 const char *const parent = va_arg(args, const char*);
4041 parent_len = va_arg(args, size_t);
4043 /* Arguments are supplied with a trailing :: */
4044 assert(parent_len > 2);
4045 assert(parent[parent_len - 1] == ':');
4046 assert(parent[parent_len - 2] == ':');
4047 av_push(isa, newSVpvn(parent, parent_len - 2));
4048 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4055 S_init_predump_symbols(pTHX)
4061 sv_setpvs(get_sv("\"", GV_ADD), " ");
4062 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4065 /* Historically, PVIOs were blessed into IO::Handle, unless
4066 FileHandle was loaded, in which case they were blessed into
4067 that. Action at a distance.
4068 However, if we simply bless into IO::Handle, we break code
4069 that assumes that PVIOs will have (among others) a seek
4070 method. IO::File inherits from IO::Handle and IO::Seekable,
4071 and provides the needed methods. But if we simply bless into
4072 it, then we break code that assumed that by loading
4073 IO::Handle, *it* would work.
4074 So a compromise is to set up the correct @IO::File::ISA,
4075 so that code that does C<use IO::Handle>; will still work.
4078 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4079 STR_WITH_LEN("IO::Handle::"),
4080 STR_WITH_LEN("IO::Seekable::"),
4081 STR_WITH_LEN("Exporter::"),
4084 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4085 GvMULTI_on(PL_stdingv);
4086 io = GvIOp(PL_stdingv);
4087 IoTYPE(io) = IoTYPE_RDONLY;
4088 IoIFP(io) = PerlIO_stdin();
4089 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4091 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4093 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4096 IoTYPE(io) = IoTYPE_WRONLY;
4097 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4099 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4101 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4103 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4104 GvMULTI_on(PL_stderrgv);
4105 io = GvIOp(PL_stderrgv);
4106 IoTYPE(io) = IoTYPE_WRONLY;
4107 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4108 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4110 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4112 PL_statname = newSVpvs(""); /* last filename we did stat on */
4116 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
4120 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4122 argc--,argv++; /* skip name of script */
4123 if (PL_doswitches) {
4124 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4128 if (argv[0][1] == '-' && !argv[0][2]) {
4132 if ((s = strchr(argv[0], '='))) {
4133 const char *const start_name = argv[0] + 1;
4134 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4135 TRUE, SVt_PV)), s + 1);
4138 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4141 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4142 GvMULTI_on(PL_argvgv);
4143 (void)gv_AVadd(PL_argvgv);
4144 av_clear(GvAVn(PL_argvgv));
4145 for (; argc > 0; argc--,argv++) {
4146 SV * const sv = newSVpv(argv[0],0);
4147 av_push(GvAVn(PL_argvgv),sv);
4148 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4149 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4152 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4153 (void)sv_utf8_decode(sv);
4157 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4158 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4159 "-i used with no filenames on the command line, "
4160 "reading from STDIN");
4164 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
4169 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4171 PL_toptarget = newSV_type(SVt_PVFM);
4172 sv_setpvs(PL_toptarget, "");
4173 PL_bodytarget = newSV_type(SVt_PVFM);
4174 sv_setpvs(PL_bodytarget, "");
4175 PL_formtarget = PL_bodytarget;
4179 init_argv_symbols(argc,argv);
4181 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4182 sv_setpv(GvSV(tmpgv),PL_origfilename);
4184 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4186 bool env_is_not_environ;
4187 GvMULTI_on(PL_envgv);
4188 hv = GvHVn(PL_envgv);
4189 hv_magic(hv, NULL, PERL_MAGIC_env);
4191 #ifdef USE_ENVIRON_ARRAY
4192 /* Note that if the supplied env parameter is actually a copy
4193 of the global environ then it may now point to free'd memory
4194 if the environment has been modified since. To avoid this
4195 problem we treat env==NULL as meaning 'use the default'
4199 env_is_not_environ = env != environ;
4200 if (env_is_not_environ
4201 # ifdef USE_ITHREADS
4202 && PL_curinterp == aTHX
4211 for (; *env; env++) {
4214 if (!(s = strchr(old_var,'=')) || s == old_var)
4217 #if defined(MSDOS) && !defined(DJGPP)
4219 (void)strupr(old_var);
4222 sv = newSVpv(s+1, 0);
4223 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4224 if (env_is_not_environ)
4228 #endif /* USE_ENVIRON_ARRAY */
4229 #endif /* !PERL_MICRO */
4233 /* touch @F array to prevent spurious warnings 20020415 MJD */
4235 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4240 S_init_perllib(pTHX)
4244 const char *perl5lib = NULL;
4247 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4253 perl5lib = PerlEnv_getenv("PERL5LIB");
4255 * It isn't possible to delete an environment variable with
4256 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4257 * case we treat PERL5LIB as undefined if it has a zero-length value.
4259 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4260 if (perl5lib && *perl5lib != '\0')
4264 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4266 s = PerlEnv_getenv("PERLLIB");
4268 incpush_use_sep(s, 0, 0);
4271 /* Treat PERL5?LIB as a possible search list logical name -- the
4272 * "natural" VMS idiom for a Unix path string. We allow each
4273 * element to be a set of |-separated directories for compatibility.
4277 if (my_trnlnm("PERL5LIB",buf,0))
4279 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4280 } while (my_trnlnm("PERL5LIB",buf,++idx));
4282 while (my_trnlnm("PERLLIB",buf,idx++))
4283 incpush_use_sep(buf, 0, 0);
4288 #ifndef PERL_IS_MINIPERL
4289 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4290 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4292 /* Use the ~-expanded versions of APPLLIB (undocumented),
4293 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4296 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4297 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4301 /* sitearch is always relative to sitelib on Windows for
4302 * DLL-based path intuition to work correctly */
4303 # if !defined(WIN32)
4304 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4305 INCPUSH_CAN_RELOCATE);
4311 /* this picks up sitearch as well */
4312 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4314 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4316 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4320 #ifdef PERL_VENDORARCH_EXP
4321 /* vendorarch is always relative to vendorlib on Windows for
4322 * DLL-based path intuition to work correctly */
4323 # if !defined(WIN32)
4324 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4325 INCPUSH_CAN_RELOCATE);
4329 #ifdef PERL_VENDORLIB_EXP
4331 /* this picks up vendorarch as well */
4332 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4334 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4336 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4337 INCPUSH_CAN_RELOCATE);
4342 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4346 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4350 s = win32_get_privlib(PERL_FS_VERSION, &len);
4352 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4355 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4357 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4361 #ifdef PERL_OTHERLIBDIRS
4362 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4363 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4364 |INCPUSH_CAN_RELOCATE);
4370 * It isn't possible to delete an environment variable with
4371 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4372 * case we treat PERL5LIB as undefined if it has a zero-length value.
4374 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4375 if (perl5lib && *perl5lib != '\0')
4379 incpush_use_sep(perl5lib, 0,
4380 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4382 /* Treat PERL5?LIB as a possible search list logical name -- the
4383 * "natural" VMS idiom for a Unix path string. We allow each
4384 * element to be a set of |-separated directories for compatibility.
4388 if (my_trnlnm("PERL5LIB",buf,0))
4390 incpush_use_sep(buf, 0,
4391 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4392 } while (my_trnlnm("PERL5LIB",buf,++idx));
4396 /* Use the ~-expanded versions of APPLLIB (undocumented),
4397 SITELIB and VENDORLIB for older versions
4400 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4401 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4404 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4405 /* Search for version-specific dirs below here */
4406 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4407 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4411 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4412 /* Search for version-specific dirs below here */
4413 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4414 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4417 #ifdef PERL_OTHERLIBDIRS
4418 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4419 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4420 |INCPUSH_CAN_RELOCATE);
4422 #endif /* !PERL_IS_MINIPERL */
4425 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4428 #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__)
4429 # define PERLLIB_SEP ';'
4432 # define PERLLIB_SEP '|'
4434 # define PERLLIB_SEP ':'
4437 #ifndef PERLLIB_MANGLE
4438 # define PERLLIB_MANGLE(s,n) (s)
4441 #ifndef PERL_IS_MINIPERL
4442 /* Push a directory onto @INC if it exists.
4443 Generate a new SV if we do this, to save needing to copy the SV we push
4446 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4451 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4453 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4454 S_ISDIR(tmpstatbuf.st_mode)) {
4456 dir = newSVsv(stem);
4458 /* Truncate dir back to stem. */
4459 SvCUR_set(dir, SvCUR(stem));
4466 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4468 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4471 PERL_ARGS_ASSERT_MAYBERELOCATE;
4475 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4476 defined to so something (in os2/os2.c), but the code has been
4477 this way, ignoring any possible changed of length, since
4478 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4480 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4482 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4489 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4491 while (unix[len-1] == '/') len--; /* Cosmetic */
4492 sv_usepvn(libdir,unix,len);
4495 PerlIO_printf(Perl_error_log,
4496 "Failed to unixify @INC element \"%s\"\n",
4497 SvPV_nolen_const(libdir));
4501 /* Do the if() outside the #ifdef to avoid warnings about an unused
4504 #ifdef PERL_RELOCATABLE_INC
4506 * Relocatable include entries are marked with a leading .../
4509 * 0: Remove that leading ".../"
4510 * 1: Remove trailing executable name (anything after the last '/')
4511 * from the perl path to give a perl prefix
4513 * While the @INC element starts "../" and the prefix ends with a real
4514 * directory (ie not . or ..) chop that real directory off the prefix
4515 * and the leading "../" from the @INC element. ie a logical "../"
4517 * Finally concatenate the prefix and the remainder of the @INC element
4518 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4519 * generates /usr/local/lib/perl5
4521 const char *libpath = SvPVX(libdir);
4522 STRLEN libpath_len = SvCUR(libdir);
4523 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4525 SV * const caret_X = get_sv("\030", 0);
4526 /* Going to use the SV just as a scratch buffer holding a C
4532 /* $^X is *the* source of taint if tainting is on, hence
4533 SvPOK() won't be true. */
4535 assert(SvPOKp(caret_X));
4536 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4538 /* Firstly take off the leading .../
4539 If all else fail we'll do the paths relative to the current
4541 sv_chop(libdir, libpath + 4);
4542 /* Don't use SvPV as we're intentionally bypassing taining,
4543 mortal copies that the mg_get of tainting creates, and
4544 corruption that seems to come via the save stack.
4545 I guess that the save stack isn't correctly set up yet. */
4546 libpath = SvPVX(libdir);
4547 libpath_len = SvCUR(libdir);
4549 /* This would work more efficiently with memrchr, but as it's
4550 only a GNU extension we'd need to probe for it and
4551 implement our own. Not hard, but maybe not worth it? */
4553 prefix = SvPVX(prefix_sv);
4554 lastslash = strrchr(prefix, '/');
4556 /* First time in with the *lastslash = '\0' we just wipe off
4557 the trailing /perl from (say) /usr/foo/bin/perl
4561 while ((*lastslash = '\0'), /* Do that, come what may. */
4562 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4563 && (lastslash = strrchr(prefix, '/')))) {
4564 if (lastslash[1] == '\0'
4565 || (lastslash[1] == '.'
4566 && (lastslash[2] == '/' /* ends "/." */
4567 || (lastslash[2] == '/'
4568 && lastslash[3] == '/' /* or "/.." */
4570 /* Prefix ends "/" or "/." or "/..", any of which
4571 are fishy, so don't do any more logical cleanup.
4575 /* Remove leading "../" from path */
4578 /* Next iteration round the loop removes the last
4579 directory name from prefix by writing a '\0' in
4580 the while clause. */
4582 /* prefix has been terminated with a '\0' to the correct
4583 length. libpath points somewhere into the libdir SV.
4584 We need to join the 2 with '/' and drop the result into
4586 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4587 SvREFCNT_dec(libdir);
4588 /* And this is the new libdir. */
4591 (PerlProc_getuid() != PerlProc_geteuid() ||
4592 PerlProc_getgid() != PerlProc_getegid())) {
4593 /* Need to taint relocated paths if running set ID */
4594 SvTAINTED_on(libdir);
4597 SvREFCNT_dec(prefix_sv);
4605 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4608 #ifndef PERL_IS_MINIPERL
4609 const U8 using_sub_dirs
4610 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4611 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4612 const U8 add_versioned_sub_dirs
4613 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4614 const U8 add_archonly_sub_dirs
4615 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4616 #ifdef PERL_INC_VERSION_LIST
4617 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4620 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4621 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4622 AV *const inc = GvAVn(PL_incgv);
4624 PERL_ARGS_ASSERT_INCPUSH;
4627 /* Could remove this vestigial extra block, if we don't mind a lot of
4628 re-indenting diff noise. */
4630 SV *const libdir = mayberelocate(dir, len, flags);
4631 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4632 arranged to unshift #! line -I onto the front of @INC. However,
4633 -I can add version and architecture specific libraries, and they
4634 need to go first. The old code assumed that it was always
4635 pushing. Hence to make it work, need to push the architecture
4636 (etc) libraries onto a temporary array, then "unshift" that onto
4637 the front of @INC. */
4638 #ifndef PERL_IS_MINIPERL
4639 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4642 * BEFORE pushing libdir onto @INC we may first push version- and
4643 * archname-specific sub-directories.
4645 if (using_sub_dirs) {
4646 SV *subdir = newSVsv(libdir);
4647 #ifdef PERL_INC_VERSION_LIST
4648 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4649 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4650 const char * const *incver;
4653 if (add_versioned_sub_dirs) {
4654 /* .../version/archname if -d .../version/archname */
4655 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4656 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4658 /* .../version if -d .../version */
4659 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4660 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4663 #ifdef PERL_INC_VERSION_LIST
4665 for (incver = incverlist; *incver; incver++) {
4666 /* .../xxx if -d .../xxx */
4667 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4668 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4673 if (add_archonly_sub_dirs) {
4674 /* .../archname if -d .../archname */
4675 sv_catpvs(subdir, "/" ARCHNAME);
4676 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4680 assert (SvREFCNT(subdir) == 1);
4681 SvREFCNT_dec(subdir);
4683 #endif /* !PERL_IS_MINIPERL */
4684 /* finally add this lib directory at the end of @INC */
4686 #ifdef PERL_IS_MINIPERL
4687 const U32 extra = 0;
4689 U32 extra = av_len(av) + 1;
4691 av_unshift(inc, extra + push_basedir);
4693 av_store(inc, extra, libdir);
4694 #ifndef PERL_IS_MINIPERL
4696 /* av owns a reference, av_store() expects to be donated a
4697 reference, and av expects to be sane when it's cleared.
4698 If I wanted to be naughty and wrong, I could peek inside the
4699 implementation of av_clear(), realise that it uses
4700 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4701 and so directly steal from it (with a memcpy() to inc, and
4702 then memset() to NULL them out. But people copy code from the
4703 core expecting it to be best practise, so let's use the API.
4704 Although studious readers will note that I'm not checking any
4706 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4711 else if (push_basedir) {
4712 av_push(inc, libdir);
4715 if (!push_basedir) {
4716 assert (SvREFCNT(libdir) == 1);
4717 SvREFCNT_dec(libdir);
4723 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4727 /* This logic has been broken out from S_incpush(). It may be possible to
4730 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4732 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4733 * argument to incpush_use_sep. This allows creation of relocatable
4734 * Perl distributions that patch the binary at install time. Those
4735 * distributions will have to provide their own relocation tools; this
4736 * is not a feature otherwise supported by core Perl.
4738 #ifndef PERL_RELOCATABLE_INCPUSH
4745 /* Break at all separators */
4746 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4748 /* skip any consecutive separators */
4750 /* Uncomment the next line for PATH semantics */
4751 /* But you'll need to write tests */
4752 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4754 incpush(p, (STRLEN)(s - p), flags);
4759 incpush(p, (STRLEN)(end - p), flags);
4764 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4768 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4774 PERL_ARGS_ASSERT_CALL_LIST;
4776 while (av_len(paramList) >= 0) {
4777 cv = MUTABLE_CV(av_shift(paramList));
4779 if (paramList == PL_beginav) {
4780 /* save PL_beginav for compiler */
4781 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4783 else if (paramList == PL_checkav) {
4784 /* save PL_checkav for compiler */
4785 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4787 else if (paramList == PL_unitcheckav) {
4788 /* save PL_unitcheckav for compiler */
4789 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4800 PL_madskills |= 16384;
4805 PL_madskills &= ~16384;
4808 (void)SvPV_const(atsv, len);
4810 PL_curcop = &PL_compiling;
4811 CopLINE_set(PL_curcop, oldline);
4812 if (paramList == PL_beginav)
4813 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4815 Perl_sv_catpvf(aTHX_ atsv,
4816 "%s failed--call queue aborted",
4817 paramList == PL_checkav ? "CHECK"
4818 : paramList == PL_initav ? "INIT"
4819 : paramList == PL_unitcheckav ? "UNITCHECK"
4821 while (PL_scopestack_ix > oldscope)
4824 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4831 /* my_exit() was called */
4832 while (PL_scopestack_ix > oldscope)
4835 SET_CURSTASH(PL_defstash);
4836 PL_curcop = &PL_compiling;
4837 CopLINE_set(PL_curcop, oldline);
4840 assert(0); /* NOTREACHED */
4843 PL_curcop = &PL_compiling;
4844 CopLINE_set(PL_curcop, oldline);
4847 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4856 Perl_my_exit(pTHX_ U32 status)
4867 STATUS_EXIT_SET(status);
4874 Perl_my_failure_exit(pTHX)
4878 /* We have been called to fall on our sword. The desired exit code
4879 * should be already set in STATUS_UNIX, but could be shifted over
4880 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4883 * If an error code has not been set, then force the issue.
4885 if (MY_POSIX_EXIT) {
4887 /* According to the die_exit.t tests, if errno is non-zero */
4888 /* It should be used for the error status. */
4890 if (errno == EVMSERR) {
4891 STATUS_NATIVE = vaxc$errno;
4894 /* According to die_exit.t tests, if the child_exit code is */
4895 /* also zero, then we need to exit with a code of 255 */
4896 if ((errno != 0) && (errno < 256))
4897 STATUS_UNIX_EXIT_SET(errno);
4898 else if (STATUS_UNIX < 255) {
4899 STATUS_UNIX_EXIT_SET(255);
4904 /* The exit code could have been set by $? or vmsish which
4905 * means that it may not have fatal set. So convert
4906 * success/warning codes to fatal with out changing
4907 * the POSIX status code. The severity makes VMS native
4908 * status handling work, while UNIX mode programs use the
4909 * the POSIX exit codes.
4911 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4912 STATUS_NATIVE &= STS$M_COND_ID;
4913 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4917 /* Traditionally Perl on VMS always expects a Fatal Error. */
4918 if (vaxc$errno & 1) {
4920 /* So force success status to failure */
4921 if (STATUS_NATIVE & 1)
4926 STATUS_UNIX = EINTR; /* In case something cares */
4931 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4933 /* Encode the severity code */
4934 severity = STATUS_NATIVE & STS$M_SEVERITY;
4935 STATUS_UNIX = (severity ? severity : 1) << 8;
4937 /* Perl expects this to be a fatal error */
4938 if (severity != STS$K_SEVERE)
4947 STATUS_UNIX_SET(errno);
4949 exitstatus = STATUS_UNIX >> 8;
4950 if (exitstatus & 255)
4951 STATUS_UNIX_SET(exitstatus);
4953 STATUS_UNIX_SET(255);
4960 S_my_exit_jump(pTHX)
4965 SvREFCNT_dec(PL_e_script);
4969 POPSTACK_TO(PL_mainstack);
4977 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4980 const char * const p = SvPVX_const(PL_e_script);
4981 const char *nl = strchr(p, '\n');
4983 PERL_UNUSED_ARG(idx);
4984 PERL_UNUSED_ARG(maxlen);
4986 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4988 filter_del(read_e_script);
4991 sv_catpvn(buf_sv, p, nl-p);
4992 sv_chop(PL_e_script, nl);
4998 * c-indentation-style: bsd
5000 * indent-tabs-mode: nil
5003 * ex: set ts=8 sts=4 sw=4 et: