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))];
69 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
70 char *getenv (char *); /* Usually in <stdlib.h> */
73 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
75 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
76 # define validate_suid(rsfp) NOOP
78 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
81 #define CALL_BODY_SUB(myop) \
82 if (PL_op == (myop)) \
83 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
87 #define CALL_LIST_BODY(cv) \
88 PUSHMARK(PL_stack_sp); \
89 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
92 S_init_tls_and_interp(PerlInterpreter *my_perl)
96 PERL_SET_INTERP(my_perl);
97 #if defined(USE_ITHREADS)
100 PERL_SET_THX(my_perl);
104 MUTEX_INIT(&PL_dollarzero_mutex);
105 MUTEX_INIT(&PL_my_ctx_mutex);
108 #if defined(USE_ITHREADS)
111 /* This always happens for non-ithreads */
114 PERL_SET_THX(my_perl);
119 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
122 Perl_sys_init(int* argc, char*** argv)
126 PERL_ARGS_ASSERT_SYS_INIT;
128 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
129 PERL_UNUSED_ARG(argv);
130 PERL_SYS_INIT_BODY(argc, argv);
134 Perl_sys_init3(int* argc, char*** argv, char*** env)
138 PERL_ARGS_ASSERT_SYS_INIT3;
140 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
141 PERL_UNUSED_ARG(argv);
142 PERL_UNUSED_ARG(env);
143 PERL_SYS_INIT3_BODY(argc, argv, env);
150 if (!PL_veto_cleanup) {
151 PERL_SYS_TERM_BODY();
156 #ifdef PERL_IMPLICIT_SYS
158 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
159 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
160 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
161 struct IPerlDir* ipD, struct IPerlSock* ipS,
162 struct IPerlProc* ipP)
164 PerlInterpreter *my_perl;
166 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
168 /* Newx() needs interpreter, so call malloc() instead */
169 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
170 S_init_tls_and_interp(my_perl);
171 Zero(my_perl, 1, PerlInterpreter);
181 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
188 =head1 Embedding Functions
190 =for apidoc perl_alloc
192 Allocates a new Perl interpreter. See L<perlembed>.
200 PerlInterpreter *my_perl;
202 /* Newx() needs interpreter, so call malloc() instead */
203 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
205 S_init_tls_and_interp(my_perl);
206 #ifndef PERL_TRACK_MEMPOOL
207 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
209 Zero(my_perl, 1, PerlInterpreter);
210 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
214 #endif /* PERL_IMPLICIT_SYS */
217 =for apidoc perl_construct
219 Initializes a new Perl interpreter. See L<perlembed>.
225 perl_construct(pTHXx)
229 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
233 PL_perl_destruct_level = 1;
235 PERL_UNUSED_ARG(my_perl);
236 if (PL_perl_destruct_level > 0)
239 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
243 SvREADONLY_on(&PL_sv_placeholder);
244 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
246 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
247 #ifdef PERL_USES_PL_PIDSTATUS
248 PL_pidstatus = newHV();
251 PL_rs = newSVpvs("\n");
261 SET_NUMERIC_STANDARD();
263 #if defined(LOCAL_PATCH_COUNT)
264 PL_localpatches = local_patches; /* For possible -v */
267 #ifdef HAVE_INTERP_INTERN
271 PerlIO_init(aTHX); /* Hook to IO system */
273 PL_fdpid = newAV(); /* for remembering popen pids by fd */
274 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
275 PL_errors = newSVpvs("");
276 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
277 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
278 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
280 /* First entry is a list of empty elements. It needs to be initialised
281 else all hell breaks loose in S_find_uninit_var(). */
282 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
283 PL_regex_pad = AvARRAY(PL_regex_padav);
284 Newxz(PL_stashpad, PL_stashpadmax, HV *);
286 #ifdef USE_REENTRANT_API
287 Perl_reentrant_init(aTHX);
289 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
290 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
291 * This MUST be done before any hash stores or fetches take place.
292 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
293 * yourself, it is your responsibility to provide a good random seed!
294 * You can also define PERL_HASH_SEED in compile time, see hv.h.
296 * XXX: fix this comment */
297 if (PL_hash_seed_set == FALSE) {
298 Perl_get_hash_seed(aTHX_ PL_hash_seed);
299 PL_hash_seed_set= TRUE;
301 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
303 /* Note that strtab is a rather special HV. Assumptions are made
304 about not iterating on it, and not adding tie magic to it.
305 It is properly deallocated in perl_destruct() */
308 HvSHAREKEYS_off(PL_strtab); /* mandatory */
309 hv_ksplit(PL_strtab, 512);
311 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
312 _dyld_lookup_and_bind
313 ("__environ", (unsigned long *) &environ_pointer, NULL);
317 # ifdef USE_ENVIRON_ARRAY
318 PL_origenviron = environ;
322 /* Use sysconf(_SC_CLK_TCK) if available, if not
323 * available or if the sysconf() fails, use the HZ.
324 * The HZ if not originally defined has been by now
325 * been defined as CLK_TCK, if available. */
326 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
327 PL_clocktick = sysconf(_SC_CLK_TCK);
328 if (PL_clocktick <= 0)
332 PL_stashcache = newHV();
334 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
335 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
338 if (!PL_mmap_page_size) {
339 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
341 SETERRNO(0, SS_NORMAL);
343 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
345 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
347 if ((long) PL_mmap_page_size < 0) {
349 SV * const error = ERRSV;
350 SvUPGRADE(error, SVt_PV);
351 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
354 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
358 # ifdef HAS_GETPAGESIZE
359 PL_mmap_page_size = getpagesize();
361 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
362 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
366 if (PL_mmap_page_size <= 0)
367 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
368 (IV) PL_mmap_page_size);
370 #endif /* HAS_MMAP */
372 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
373 PL_timesbase.tms_utime = 0;
374 PL_timesbase.tms_stime = 0;
375 PL_timesbase.tms_cutime = 0;
376 PL_timesbase.tms_cstime = 0;
379 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
381 PL_registered_mros = newHV();
382 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
383 HvMAX(PL_registered_mros) = 0;
389 =for apidoc nothreadhook
391 Stub that provides thread hook for perl_destruct when there are
398 Perl_nothreadhook(pTHX)
404 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
406 Perl_dump_sv_child(pTHX_ SV *sv)
409 const int sock = PL_dumper_fd;
410 const int debug_fd = PerlIO_fileno(Perl_debug_log);
411 union control_un control;
414 struct cmsghdr *cmptr;
416 unsigned char buffer[256];
418 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
420 if(sock == -1 || debug_fd == -1)
423 PerlIO_flush(Perl_debug_log);
425 /* All these shenanigans are to pass a file descriptor over to our child for
426 it to dump out to. We can't let it hold open the file descriptor when it
427 forks, as the file descriptor it will dump to can turn out to be one end
428 of pipe that some other process will wait on for EOF. (So as it would
429 be open, the wait would be forever.) */
431 msg.msg_control = control.control;
432 msg.msg_controllen = sizeof(control.control);
433 /* We're a connected socket so we don't need a destination */
439 cmptr = CMSG_FIRSTHDR(&msg);
440 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
441 cmptr->cmsg_level = SOL_SOCKET;
442 cmptr->cmsg_type = SCM_RIGHTS;
443 *((int *)CMSG_DATA(cmptr)) = 1;
445 vec[0].iov_base = (void*)&sv;
446 vec[0].iov_len = sizeof(sv);
447 got = sendmsg(sock, &msg, 0);
450 perror("Debug leaking scalars parent sendmsg failed");
453 if(got < sizeof(sv)) {
454 perror("Debug leaking scalars parent short sendmsg");
458 /* Return protocol is
460 unsigned char: length of location string (0 for empty)
461 unsigned char*: string (not terminated)
463 vec[0].iov_base = (void*)&returned_errno;
464 vec[0].iov_len = sizeof(returned_errno);
465 vec[1].iov_base = buffer;
468 got = readv(sock, vec, 2);
471 perror("Debug leaking scalars parent read failed");
472 PerlIO_flush(PerlIO_stderr());
475 if(got < sizeof(returned_errno) + 1) {
476 perror("Debug leaking scalars parent short read");
477 PerlIO_flush(PerlIO_stderr());
482 got = read(sock, buffer + 1, *buffer);
484 perror("Debug leaking scalars parent read 2 failed");
485 PerlIO_flush(PerlIO_stderr());
490 perror("Debug leaking scalars parent short read 2");
491 PerlIO_flush(PerlIO_stderr());
496 if (returned_errno || *buffer) {
497 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
498 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
499 returned_errno, strerror(returned_errno));
505 =for apidoc perl_destruct
507 Shuts down a Perl interpreter. See L<perlembed>.
516 VOL signed char destruct_level; /* see possible values in intrpvar.h */
518 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
523 PERL_ARGS_ASSERT_PERL_DESTRUCT;
525 PERL_UNUSED_ARG(my_perl);
528 assert(PL_scopestack_ix == 1);
530 /* wait for all pseudo-forked children to finish */
531 PERL_WAIT_FOR_CHILDREN;
533 destruct_level = PL_perl_destruct_level;
534 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
536 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
538 const int i = atoi(s);
540 if (destruct_level < i) destruct_level = i;
542 #ifdef PERL_TRACK_MEMPOOL
543 /* RT #114496, for perl_free */
544 PL_perl_destruct_level = i;
550 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
556 if (PL_endav && !PL_minus_c) {
557 PERL_SET_PHASE(PERL_PHASE_END);
558 call_list(PL_scopestack_ix, PL_endav);
564 assert(PL_scopestack_ix == 0);
566 /* Need to flush since END blocks can produce output */
569 if (PL_threadhook(aTHX)) {
570 /* Threads hook has vetoed further cleanup */
571 PL_veto_cleanup = TRUE;
575 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
576 if (destruct_level != 0) {
577 /* Fork here to create a child. Our child's job is to preserve the
578 state of scalars prior to destruction, so that we can instruct it
579 to dump any scalars that we later find have leaked.
580 There's no subtlety in this code - it assumes POSIX, and it doesn't
584 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
585 perror("Debug leaking scalars socketpair failed");
591 perror("Debug leaking scalars fork failed");
595 /* We are the child */
596 const int sock = fd[1];
597 const int debug_fd = PerlIO_fileno(Perl_debug_log);
600 /* Our success message is an integer 0, and a char 0 */
601 static const char success[sizeof(int) + 1] = {0};
605 /* We need to close all other file descriptors otherwise we end up
606 with interesting hangs, where the parent closes its end of a
607 pipe, and sits waiting for (another) child to terminate. Only
608 that child never terminates, because it never gets EOF, because
609 we also have the far end of the pipe open. We even need to
610 close the debugging fd, because sometimes it happens to be one
611 end of a pipe, and a process is waiting on the other end for
612 EOF. Normally it would be closed at some point earlier in
613 destruction, but if we happen to cause the pipe to remain open,
614 EOF never occurs, and we get an infinite hang. Hence all the
615 games to pass in a file descriptor if it's actually needed. */
617 f = sysconf(_SC_OPEN_MAX);
619 where = "sysconf failed";
630 union control_un control;
633 struct cmsghdr *cmptr;
637 msg.msg_control = control.control;
638 msg.msg_controllen = sizeof(control.control);
639 /* We're a connected socket so we don't need a source */
643 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
645 vec[0].iov_base = (void*)⌖
646 vec[0].iov_len = sizeof(target);
648 got = recvmsg(sock, &msg, 0);
653 where = "recv failed";
656 if(got < sizeof(target)) {
657 where = "short recv";
661 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
665 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
666 where = "wrong cmsg_len";
669 if(cmptr->cmsg_level != SOL_SOCKET) {
670 where = "wrong cmsg_level";
673 if(cmptr->cmsg_type != SCM_RIGHTS) {
674 where = "wrong cmsg_type";
678 got_fd = *(int*)CMSG_DATA(cmptr);
679 /* For our last little bit of trickery, put the file descriptor
680 back into Perl_debug_log, as if we never actually closed it
682 if(got_fd != debug_fd) {
683 if (dup2(got_fd, debug_fd) == -1) {
690 PerlIO_flush(Perl_debug_log);
692 got = write(sock, &success, sizeof(success));
695 where = "write failed";
698 if(got < sizeof(success)) {
699 where = "short write";
706 int send_errno = errno;
707 unsigned char length = (unsigned char) strlen(where);
708 struct iovec failure[3] = {
709 {(void*)&send_errno, sizeof(send_errno)},
711 {(void*)where, length}
713 int got = writev(sock, failure, 3);
714 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
715 in the parent if we try to read from the socketpair after the
716 child has exited, even if there was data to read.
717 So sleep a bit to give the parent a fighting chance of
720 _exit((got == -1) ? errno : 0);
724 PL_dumper_fd = fd[0];
729 /* We must account for everything. */
731 /* Destroy the main CV and syntax tree */
732 /* Set PL_curcop now, because destroying ops can cause new SVs
733 to be generated in Perl_pad_swipe, and when running with
734 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
735 op from which the filename structure member is copied. */
736 PL_curcop = &PL_compiling;
738 /* ensure comppad/curpad to refer to main's pad */
739 if (CvPADLIST(PL_main_cv)) {
740 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
742 op_free(PL_main_root);
745 PL_main_start = NULL;
746 /* note that PL_main_cv isn't usually actually freed at this point,
747 * due to the CvOUTSIDE refs from subs compiled within it. It will
748 * get freed once all the subs are freed in sv_clean_all(), for
749 * destruct_level > 0 */
750 SvREFCNT_dec(PL_main_cv);
752 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
754 /* Tell PerlIO we are about to tear things apart in case
755 we have layers which are using resources that should
759 PerlIO_destruct(aTHX);
762 * Try to destruct global references. We do this first so that the
763 * destructors and destructees still exist. Some sv's might remain.
764 * Non-referenced objects are on their own.
768 /* unhook hooks which will soon be, or use, destroyed data */
769 SvREFCNT_dec(PL_warnhook);
771 SvREFCNT_dec(PL_diehook);
774 /* call exit list functions */
775 while (PL_exitlistlen-- > 0)
776 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
778 Safefree(PL_exitlist);
783 SvREFCNT_dec(PL_registered_mros);
785 /* jettison our possibly duplicated environment */
786 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
787 * so we certainly shouldn't free it here
790 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
791 if (environ != PL_origenviron && !PL_use_safe_putenv
793 /* only main thread can free environ[0] contents */
794 && PL_curinterp == aTHX
800 for (i = 0; environ[i]; i++)
801 safesysfree(environ[i]);
803 /* Must use safesysfree() when working with environ. */
804 safesysfree(environ);
806 environ = PL_origenviron;
809 #endif /* !PERL_MICRO */
811 if (destruct_level == 0) {
813 DEBUG_P(debprofdump());
815 #if defined(PERLIO_LAYERS)
816 /* No more IO - including error messages ! */
817 PerlIO_cleanup(aTHX);
820 CopFILE_free(&PL_compiling);
822 /* The exit() function will do everything that needs doing. */
827 /* the syntax tree is shared between clones
828 * so op_free(PL_main_root) only ReREFCNT_dec's
829 * REGEXPs in the parent interpreter
830 * we need to manually ReREFCNT_dec for the clones
833 I32 i = AvFILLp(PL_regex_padav);
834 SV **ary = AvARRAY(PL_regex_padav);
837 SvREFCNT_dec(ary[i]);
838 ary[i] = &PL_sv_undef;
844 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
845 PL_stashcache = NULL;
847 /* loosen bonds of global variables */
849 /* XXX can PL_parser still be non-null here? */
850 if(PL_parser && PL_parser->rsfp) {
851 (void)PerlIO_close(PL_parser->rsfp);
852 PL_parser->rsfp = NULL;
856 Safefree(PL_splitstr);
866 PL_doswitches = FALSE;
867 PL_dowarn = G_WARN_OFF;
868 #ifdef PERL_SAWAMPERSAND
869 PL_sawampersand = 0; /* must save all match strings */
873 Safefree(PL_inplace);
875 SvREFCNT_dec(PL_patchlevel);
876 SvREFCNT_dec(PL_apiversion);
879 SvREFCNT_dec(PL_e_script);
885 /* magical thingies */
887 SvREFCNT_dec(PL_ofsgv); /* *, */
890 SvREFCNT_dec(PL_ors_sv); /* $\ */
893 SvREFCNT_dec(PL_rs); /* $/ */
896 Safefree(PL_osname); /* $^O */
899 SvREFCNT_dec(PL_statname);
903 /* defgv, aka *_ should be taken care of elsewhere */
906 Safefree(PL_efloatbuf);
910 /* startup and shutdown function lists */
911 SvREFCNT_dec(PL_beginav);
912 SvREFCNT_dec(PL_beginav_save);
913 SvREFCNT_dec(PL_endav);
914 SvREFCNT_dec(PL_checkav);
915 SvREFCNT_dec(PL_checkav_save);
916 SvREFCNT_dec(PL_unitcheckav);
917 SvREFCNT_dec(PL_unitcheckav_save);
918 SvREFCNT_dec(PL_initav);
920 PL_beginav_save = NULL;
923 PL_checkav_save = NULL;
924 PL_unitcheckav = NULL;
925 PL_unitcheckav_save = NULL;
928 /* shortcuts just get cleared */
937 PL_last_in_gv = NULL;
949 SvREFCNT_dec(PL_argvout_stack);
950 PL_argvout_stack = NULL;
952 SvREFCNT_dec(PL_modglobal);
954 SvREFCNT_dec(PL_preambleav);
955 PL_preambleav = NULL;
956 SvREFCNT_dec(PL_subname);
958 #ifdef PERL_USES_PL_PIDSTATUS
959 SvREFCNT_dec(PL_pidstatus);
962 SvREFCNT_dec(PL_toptarget);
964 SvREFCNT_dec(PL_bodytarget);
965 PL_bodytarget = NULL;
966 PL_formtarget = NULL;
968 /* free locale stuff */
969 #ifdef USE_LOCALE_COLLATE
970 Safefree(PL_collation_name);
971 PL_collation_name = NULL;
974 #ifdef USE_LOCALE_NUMERIC
975 Safefree(PL_numeric_name);
976 PL_numeric_name = NULL;
977 SvREFCNT_dec(PL_numeric_radix_sv);
978 PL_numeric_radix_sv = NULL;
981 /* clear character classes */
982 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
983 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
984 PL_utf8_swash_ptrs[i] = NULL;
986 SvREFCNT_dec(PL_utf8_mark);
987 SvREFCNT_dec(PL_utf8_toupper);
988 SvREFCNT_dec(PL_utf8_totitle);
989 SvREFCNT_dec(PL_utf8_tolower);
990 SvREFCNT_dec(PL_utf8_tofold);
991 SvREFCNT_dec(PL_utf8_idstart);
992 SvREFCNT_dec(PL_utf8_idcont);
993 SvREFCNT_dec(PL_utf8_foldclosures);
995 PL_utf8_toupper = NULL;
996 PL_utf8_totitle = NULL;
997 PL_utf8_tolower = NULL;
998 PL_utf8_tofold = NULL;
999 PL_utf8_idstart = NULL;
1000 PL_utf8_idcont = NULL;
1001 PL_utf8_foldclosures = NULL;
1002 for (i = 0; i < POSIX_CC_COUNT; i++) {
1003 SvREFCNT_dec(PL_Posix_ptrs[i]);
1004 PL_Posix_ptrs[i] = NULL;
1006 SvREFCNT_dec(PL_L1Posix_ptrs[i]);
1007 PL_L1Posix_ptrs[i] = NULL;
1009 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1010 PL_XPosix_ptrs[i] = NULL;
1013 if (!specialWARN(PL_compiling.cop_warnings))
1014 PerlMemShared_free(PL_compiling.cop_warnings);
1015 PL_compiling.cop_warnings = NULL;
1016 cophh_free(CopHINTHASH_get(&PL_compiling));
1017 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1018 CopFILE_free(&PL_compiling);
1020 /* Prepare to destruct main symbol table. */
1023 /* break ref loop *:: <=> %:: */
1024 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1027 SvREFCNT_dec(PL_curstname);
1028 PL_curstname = NULL;
1030 /* clear queued errors */
1031 SvREFCNT_dec(PL_errors);
1034 SvREFCNT_dec(PL_isarev);
1037 if (destruct_level >= 2) {
1038 if (PL_scopestack_ix != 0)
1039 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1040 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1041 (long)PL_scopestack_ix);
1042 if (PL_savestack_ix != 0)
1043 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1044 "Unbalanced saves: %ld more saves than restores\n",
1045 (long)PL_savestack_ix);
1046 if (PL_tmps_floor != -1)
1047 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1048 (long)PL_tmps_floor + 1);
1049 if (cxstack_ix != -1)
1050 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1051 (long)cxstack_ix + 1);
1055 SvREFCNT_dec(PL_regex_padav);
1056 PL_regex_padav = NULL;
1057 PL_regex_pad = NULL;
1060 #ifdef PERL_IMPLICIT_CONTEXT
1061 /* the entries in this list are allocated via SV PVX's, so get freed
1062 * in sv_clean_all */
1063 Safefree(PL_my_cxt_list);
1066 /* Now absolutely destruct everything, somehow or other, loops or no. */
1068 /* the 2 is for PL_fdpid and PL_strtab */
1069 while (sv_clean_all() > 2)
1073 Safefree(PL_stashpad); /* must come after sv_clean_all */
1076 AvREAL_off(PL_fdpid); /* no surviving entries */
1077 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1080 #ifdef HAVE_INTERP_INTERN
1084 /* Destruct the global string table. */
1086 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1087 * so that sv_free() won't fail on them.
1088 * Now that the global string table is using a single hunk of memory
1089 * for both HE and HEK, we either need to explicitly unshare it the
1090 * correct way, or actually free things here.
1093 const I32 max = HvMAX(PL_strtab);
1094 HE * const * const array = HvARRAY(PL_strtab);
1095 HE *hent = array[0];
1098 if (hent && ckWARN_d(WARN_INTERNAL)) {
1099 HE * const next = HeNEXT(hent);
1100 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1101 "Unbalanced string table refcount: (%ld) for \"%s\"",
1102 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1109 hent = array[riter];
1114 HvARRAY(PL_strtab) = 0;
1115 HvTOTALKEYS(PL_strtab) = 0;
1117 SvREFCNT_dec(PL_strtab);
1120 /* free the pointer tables used for cloning */
1121 ptr_table_free(PL_ptr_table);
1122 PL_ptr_table = (PTR_TBL_t*)NULL;
1125 /* free special SVs */
1127 SvREFCNT(&PL_sv_yes) = 0;
1128 sv_clear(&PL_sv_yes);
1129 SvANY(&PL_sv_yes) = NULL;
1130 SvFLAGS(&PL_sv_yes) = 0;
1132 SvREFCNT(&PL_sv_no) = 0;
1133 sv_clear(&PL_sv_no);
1134 SvANY(&PL_sv_no) = NULL;
1135 SvFLAGS(&PL_sv_no) = 0;
1139 for (i=0; i<=2; i++) {
1140 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1141 sv_clear(PERL_DEBUG_PAD(i));
1142 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1143 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1147 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1148 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1150 #ifdef DEBUG_LEAKING_SCALARS
1151 if (PL_sv_count != 0) {
1156 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1157 svend = &sva[SvREFCNT(sva)];
1158 for (sv = sva + 1; sv < svend; ++sv) {
1159 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1160 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1162 " refcnt=%"UVuf pTHX__FORMAT "\n"
1163 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1165 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1167 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1169 sv->sv_debug_inpad ? "for" : "by",
1170 sv->sv_debug_optype ?
1171 PL_op_name[sv->sv_debug_optype]: "(none)",
1172 PTR2UV(sv->sv_debug_parent),
1175 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1176 Perl_dump_sv_child(aTHX_ sv);
1182 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1186 /* Wait for up to 4 seconds for child to terminate.
1187 This seems to be the least effort way of timing out on reaping
1189 struct timeval waitfor = {4, 0};
1190 int sock = PL_dumper_fd;
1194 FD_SET(sock, &rset);
1195 select(sock + 1, &rset, NULL, NULL, &waitfor);
1196 waitpid(child, &status, WNOHANG);
1201 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1207 #if defined(PERLIO_LAYERS)
1208 /* No more IO - including error messages ! */
1209 PerlIO_cleanup(aTHX);
1212 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1213 as currently layers use it rather than NULL as a marker
1214 for no arg - and will try and SvREFCNT_dec it.
1216 SvREFCNT(&PL_sv_undef) = 0;
1217 SvREADONLY_off(&PL_sv_undef);
1219 Safefree(PL_origfilename);
1220 PL_origfilename = NULL;
1221 Safefree(PL_reg_curpm);
1222 Safefree(PL_reg_poscache);
1223 free_tied_hv_pool();
1224 Safefree(PL_op_mask);
1225 Safefree(PL_psig_name);
1226 PL_psig_name = (SV**)NULL;
1227 PL_psig_ptr = (SV**)NULL;
1229 /* We need to NULL PL_psig_pend first, so that
1230 signal handlers know not to use it */
1231 int *psig_save = PL_psig_pend;
1232 PL_psig_pend = (int*)NULL;
1233 Safefree(psig_save);
1236 TAINTING_set(FALSE);
1237 TAINT_WARN_set(FALSE);
1238 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1241 DEBUG_P(debprofdump());
1243 #ifdef USE_REENTRANT_API
1244 Perl_reentrant_free(aTHX);
1249 while (PL_regmatch_slab) {
1250 regmatch_slab *s = PL_regmatch_slab;
1251 PL_regmatch_slab = PL_regmatch_slab->next;
1255 /* As the absolutely last thing, free the non-arena SV for mess() */
1258 /* we know that type == SVt_PVMG */
1260 /* it could have accumulated taint magic */
1263 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1264 moremagic = mg->mg_moremagic;
1265 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1267 Safefree(mg->mg_ptr);
1271 /* we know that type >= SVt_PV */
1272 SvPV_free(PL_mess_sv);
1273 Safefree(SvANY(PL_mess_sv));
1274 Safefree(PL_mess_sv);
1281 =for apidoc perl_free
1283 Releases a Perl interpreter. See L<perlembed>.
1293 PERL_ARGS_ASSERT_PERL_FREE;
1295 if (PL_veto_cleanup)
1298 #ifdef PERL_TRACK_MEMPOOL
1301 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1302 * value as we're probably hunting memory leaks then
1304 if (PL_perl_destruct_level == 0) {
1305 const U32 old_debug = PL_debug;
1306 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1307 thread at thread exit. */
1309 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1310 "free this thread's memory\n");
1311 PL_debug &= ~ DEBUG_m_FLAG;
1313 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1314 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1315 PL_debug = old_debug;
1320 #if defined(WIN32) || defined(NETWARE)
1321 # if defined(PERL_IMPLICIT_SYS)
1324 void *host = nw_internal_host;
1326 void *host = w32_internal_host;
1328 PerlMem_free(aTHXx);
1330 nw_delete_internal_host(host);
1332 win32_delete_internal_host(host);
1336 PerlMem_free(aTHXx);
1339 PerlMem_free(aTHXx);
1343 #if defined(USE_ITHREADS)
1344 /* provide destructors to clean up the thread key when libperl is unloaded */
1345 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1347 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1348 #pragma fini "perl_fini"
1349 #elif defined(__sun) && !defined(__GNUC__)
1350 #pragma fini (perl_fini)
1354 #if defined(__GNUC__)
1355 __attribute__((destructor))
1360 if (PL_curinterp && !PL_veto_cleanup)
1365 #endif /* THREADS */
1368 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1371 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1372 PL_exitlist[PL_exitlistlen].fn = fn;
1373 PL_exitlist[PL_exitlistlen].ptr = ptr;
1378 S_set_caret_X(pTHX) {
1380 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1382 SV *const caret_x = GvSV(tmpgv);
1384 sv_setpv(caret_x, os2_execname(aTHX));
1386 # ifdef USE_KERN_PROC_PATHNAME
1391 mib[2] = KERN_PROC_PATHNAME;
1394 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1395 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1396 sv_grow(caret_x, size);
1398 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1400 SvPOK_only(caret_x);
1401 SvCUR_set(caret_x, size - 1);
1406 # elif defined(USE_NSGETEXECUTABLEPATH)
1408 uint32_t size = sizeof(buf);
1410 _NSGetExecutablePath(buf, &size);
1411 if (size < MAXPATHLEN * MAXPATHLEN) {
1412 sv_grow(caret_x, size);
1413 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1414 char *const tidied = realpath(SvPVX(caret_x), NULL);
1416 sv_setpv(caret_x, tidied);
1419 SvPOK_only(caret_x);
1420 SvCUR_set(caret_x, size);
1425 # elif defined(HAS_PROCSELFEXE)
1426 char buf[MAXPATHLEN];
1427 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1429 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1430 includes a spurious NUL which will cause $^X to fail in system
1431 or backticks (this will prevent extensions from being built and
1432 many tests from working). readlink is not meant to add a NUL.
1433 Normal readlink works fine.
1435 if (len > 0 && buf[len-1] == '\0') {
1439 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1440 returning the text "unknown" from the readlink rather than the path
1441 to the executable (or returning an error from the readlink). Any
1442 valid path has a '/' in it somewhere, so use that to validate the
1443 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1445 if (len > 0 && memchr(buf, '/', len)) {
1446 sv_setpvn(caret_x, buf, len);
1450 /* Fallback to this: */
1451 sv_setpv(caret_x, PL_origargv[0]);
1457 =for apidoc perl_parse
1459 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1464 #define SET_CURSTASH(newstash) \
1465 if (PL_curstash != newstash) { \
1466 SvREFCNT_dec(PL_curstash); \
1467 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1471 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1478 PERL_ARGS_ASSERT_PERL_PARSE;
1479 #ifndef MULTIPLICITY
1480 PERL_UNUSED_ARG(my_perl);
1482 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1484 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1486 if (s && (atoi(s) == 1)) {
1487 unsigned char *seed= PERL_HASH_SEED;
1488 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1489 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1490 while (seed < seed_end) {
1491 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1493 #ifdef PERL_HASH_RANDOMIZE_KEYS
1494 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1495 PL_HASH_RAND_BITS_ENABLED,
1496 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1498 PerlIO_printf(Perl_debug_log, "\n");
1501 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1505 if (PL_origalen != 0) {
1506 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1509 /* Set PL_origalen be the sum of the contiguous argv[]
1510 * elements plus the size of the env in case that it is
1511 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1512 * as the maximum modifiable length of $0. In the worst case
1513 * the area we are able to modify is limited to the size of
1514 * the original argv[0]. (See below for 'contiguous', though.)
1516 const char *s = NULL;
1519 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1520 /* Do the mask check only if the args seem like aligned. */
1522 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1524 /* See if all the arguments are contiguous in memory. Note
1525 * that 'contiguous' is a loose term because some platforms
1526 * align the argv[] and the envp[]. If the arguments look
1527 * like non-aligned, assume that they are 'strictly' or
1528 * 'traditionally' contiguous. If the arguments look like
1529 * aligned, we just check that they are within aligned
1530 * PTRSIZE bytes. As long as no system has something bizarre
1531 * like the argv[] interleaved with some other data, we are
1532 * fine. (Did I just evoke Murphy's Law?) --jhi */
1533 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1535 for (i = 1; i < PL_origargc; i++) {
1536 if ((PL_origargv[i] == s + 1
1538 || PL_origargv[i] == s + 2
1543 (PL_origargv[i] > s &&
1545 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1556 #ifndef PERL_USE_SAFE_PUTENV
1557 /* Can we grab env area too to be used as the area for $0? */
1558 if (s && PL_origenviron && !PL_use_safe_putenv) {
1559 if ((PL_origenviron[0] == s + 1)
1562 (PL_origenviron[0] > s &&
1563 PL_origenviron[0] <=
1564 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1567 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1568 s = PL_origenviron[0];
1571 my_setenv("NoNe SuCh", NULL);
1572 /* Force copy of environment. */
1573 for (i = 1; PL_origenviron[i]; i++) {
1574 if (PL_origenviron[i] == s + 1
1577 (PL_origenviron[i] > s &&
1578 PL_origenviron[i] <=
1579 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1582 s = PL_origenviron[i];
1590 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1592 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1597 /* Come here if running an undumped a.out. */
1599 PL_origfilename = savepv(argv[0]);
1600 PL_do_undump = FALSE;
1601 cxstack_ix = -1; /* start label stack again */
1603 assert (!TAINT_get);
1605 S_set_caret_X(aTHX);
1607 init_postdump_symbols(argc,argv,env);
1612 op_free(PL_main_root);
1613 PL_main_root = NULL;
1615 PL_main_start = NULL;
1616 SvREFCNT_dec(PL_main_cv);
1620 oldscope = PL_scopestack_ix;
1621 PL_dowarn = G_WARN_OFF;
1626 parse_body(env,xsinit);
1627 if (PL_unitcheckav) {
1628 call_list(oldscope, PL_unitcheckav);
1631 PERL_SET_PHASE(PERL_PHASE_CHECK);
1632 call_list(oldscope, PL_checkav);
1640 /* my_exit() was called */
1641 while (PL_scopestack_ix > oldscope)
1644 SET_CURSTASH(PL_defstash);
1645 if (PL_unitcheckav) {
1646 call_list(oldscope, PL_unitcheckav);
1649 PERL_SET_PHASE(PERL_PHASE_CHECK);
1650 call_list(oldscope, PL_checkav);
1655 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1663 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1664 miniperl, and we need to see those flags reflected in the values here. */
1666 /* What this returns is subject to change. Use the public interface in Config.
1669 S_Internals_V(pTHX_ CV *cv)
1672 #ifdef LOCAL_PATCH_COUNT
1673 const int local_patch_count = LOCAL_PATCH_COUNT;
1675 const int local_patch_count = 0;
1677 const int entries = 3 + local_patch_count;
1679 static const char non_bincompat_options[] =
1686 # ifdef NO_HASH_SEED
1689 # ifdef NO_TAINT_SUPPORT
1692 # ifdef PERL_DISABLE_PMC
1695 # ifdef PERL_DONT_CREATE_GVSV
1696 " PERL_DONT_CREATE_GVSV"
1698 # ifdef PERL_EXTERNAL_GLOB
1699 " PERL_EXTERNAL_GLOB"
1701 # ifdef PERL_HASH_FUNC_SIPHASH
1702 " PERL_HASH_FUNC_SIPHASH"
1704 # ifdef PERL_HASH_FUNC_SDBM
1705 " PERL_HASH_FUNC_SDBM"
1707 # ifdef PERL_HASH_FUNC_DJB2
1708 " PERL_HASH_FUNC_DJB2"
1710 # ifdef PERL_HASH_FUNC_SUPERFAST
1711 " PERL_HASH_FUNC_SUPERFAST"
1713 # ifdef PERL_HASH_FUNC_MURMUR3
1714 " PERL_HASH_FUNC_MURMUR3"
1716 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1717 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1719 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1720 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1722 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1723 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1725 # ifdef PERL_IS_MINIPERL
1728 # ifdef PERL_MALLOC_WRAP
1731 # ifdef PERL_MEM_LOG
1734 # ifdef PERL_MEM_LOG_NOIMPL
1735 " PERL_MEM_LOG_NOIMPL"
1737 # ifdef PERL_NEW_COPY_ON_WRITE
1738 " PERL_NEW_COPY_ON_WRITE"
1740 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1741 " PERL_PERTURB_KEYS_DETERMINISTIC"
1743 # ifdef PERL_PERTURB_KEYS_DISABLED
1744 " PERL_PERTURB_KEYS_DISABLED"
1746 # ifdef PERL_PERTURB_KEYS_RANDOM
1747 " PERL_PERTURB_KEYS_RANDOM"
1749 # ifdef PERL_PRESERVE_IVUV
1750 " PERL_PRESERVE_IVUV"
1752 # ifdef PERL_RELOCATABLE_INCPUSH
1753 " PERL_RELOCATABLE_INCPUSH"
1755 # ifdef PERL_USE_DEVEL
1758 # ifdef PERL_USE_SAFE_PUTENV
1759 " PERL_USE_SAFE_PUTENV"
1761 # ifdef UNLINK_ALL_VERSIONS
1762 " UNLINK_ALL_VERSIONS"
1764 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1765 " USE_ATTRIBUTES_FOR_PERLIO"
1767 # ifdef USE_FAST_STDIO
1770 # ifdef USE_HASH_SEED_EXPLICIT
1771 " USE_HASH_SEED_EXPLICIT"
1776 # ifdef USE_LOCALE_CTYPE
1779 # ifdef USE_PERL_ATOF
1782 # ifdef USE_SITECUSTOMIZE
1783 " USE_SITECUSTOMIZE"
1786 PERL_UNUSED_ARG(cv);
1787 PERL_UNUSED_ARG(items);
1789 EXTEND(SP, entries);
1791 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1792 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1793 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1797 PUSHs(Perl_newSVpvn_flags(aTHX_
1798 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1801 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1805 PUSHs(&PL_sv_undef);
1808 for (i = 1; i <= local_patch_count; i++) {
1809 /* This will be an undef, if PL_localpatches[i] is NULL. */
1810 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1816 #define INCPUSH_UNSHIFT 0x01
1817 #define INCPUSH_ADD_OLD_VERS 0x02
1818 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1819 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1820 #define INCPUSH_NOT_BASEDIR 0x10
1821 #define INCPUSH_CAN_RELOCATE 0x20
1822 #define INCPUSH_ADD_SUB_DIRS \
1823 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1826 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1830 int argc = PL_origargc;
1831 char **argv = PL_origargv;
1832 const char *scriptname = NULL;
1833 VOL bool dosearch = FALSE;
1835 bool doextract = FALSE;
1836 const char *cddir = NULL;
1837 #ifdef USE_SITECUSTOMIZE
1838 bool minus_f = FALSE;
1840 SV *linestr_sv = NULL;
1841 bool add_read_e_script = FALSE;
1842 U32 lex_start_flags = 0;
1844 PERL_SET_PHASE(PERL_PHASE_START);
1850 for (argc--,argv++; argc > 0; argc--,argv++) {
1851 if (argv[0][0] != '-' || !argv[0][1])
1857 #ifndef PERL_STRICT_CR
1881 if ((s = moreswitches(s)))
1886 #if SILENT_NO_TAINT_SUPPORT
1887 /* silently ignore */
1888 #elif NO_TAINT_SUPPORT
1889 Perl_croak_nocontext("This perl was compiled without taint support. "
1890 "Cowardly refusing to run with -t or -T flags");
1892 CHECK_MALLOC_TOO_LATE_FOR('t');
1893 if( !TAINTING_get ) {
1894 TAINT_WARN_set(TRUE);
1901 #if SILENT_NO_TAINT_SUPPORT
1902 /* silently ignore */
1903 #elif NO_TAINT_SUPPORT
1904 Perl_croak_nocontext("This perl was compiled without taint support. "
1905 "Cowardly refusing to run with -t or -T flags");
1907 CHECK_MALLOC_TOO_LATE_FOR('T');
1909 TAINT_WARN_set(FALSE);
1918 forbid_setid('e', FALSE);
1920 PL_e_script = newSVpvs("");
1921 add_read_e_script = TRUE;
1924 sv_catpv(PL_e_script, s);
1926 sv_catpv(PL_e_script, argv[1]);
1930 Perl_croak(aTHX_ "No code specified for -%c", c);
1931 sv_catpvs(PL_e_script, "\n");
1935 #ifdef USE_SITECUSTOMIZE
1941 case 'I': /* -I handled both here and in moreswitches() */
1942 forbid_setid('I', FALSE);
1943 if (!*++s && (s=argv[1]) != NULL) {
1947 STRLEN len = strlen(s);
1948 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1951 Perl_croak(aTHX_ "No directory specified for -I");
1954 forbid_setid('S', FALSE);
1963 opts_prog = newSVpvs("use Config; Config::_V()");
1967 opts_prog = Perl_newSVpvf(aTHX_
1968 "use Config; Config::config_vars(qw%c%s%c)",
1972 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1973 /* don't look for script or read stdin */
1974 scriptname = BIT_BUCKET;
1986 if (!*++s || isSPACE(*s)) {
1990 /* catch use of gnu style long options.
1991 Both of these exit immediately. */
1992 if (strEQ(s, "version"))
1994 if (strEQ(s, "help"))
1999 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
2010 #ifndef SECURE_INTERNAL_GETENV
2013 (s = PerlEnv_getenv("PERL5OPT")))
2017 if (*s == '-' && *(s+1) == 'T') {
2018 #if SILENT_NO_TAINT_SUPPORT
2019 /* silently ignore */
2020 #elif NO_TAINT_SUPPORT
2021 Perl_croak_nocontext("This perl was compiled without taint support. "
2022 "Cowardly refusing to run with -t or -T flags");
2024 CHECK_MALLOC_TOO_LATE_FOR('T');
2026 TAINT_WARN_set(FALSE);
2030 char *popt_copy = NULL;
2043 if (!strchr("CDIMUdmtwW", *s))
2044 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2048 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2049 s = popt_copy + (s - d);
2057 #if SILENT_NO_TAINT_SUPPORT
2058 /* silently ignore */
2059 #elif NO_TAINT_SUPPORT
2060 Perl_croak_nocontext("This perl was compiled without taint support. "
2061 "Cowardly refusing to run with -t or -T flags");
2063 if( !TAINTING_get) {
2064 TAINT_WARN_set(TRUE);
2076 /* Set $^X early so that it can be used for relocatable paths in @INC */
2077 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2078 assert (!TAINT_get);
2080 S_set_caret_X(aTHX);
2083 #if defined(USE_SITECUSTOMIZE)
2085 /* The games with local $! are to avoid setting errno if there is no
2086 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2087 ie a q() operator with a NUL byte as a the delimiter. This avoids
2088 problems with pathnames containing (say) ' */
2089 # ifdef PERL_IS_MINIPERL
2090 AV *const inc = GvAV(PL_incgv);
2091 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2094 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2096 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2101 /* SITELIB_EXP is a function call on Win32. */
2102 const char *const raw_sitelib = SITELIB_EXP;
2104 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2105 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2106 INCPUSH_CAN_RELOCATE);
2107 const char *const sitelib = SvPVX(sitelib_sv);
2108 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2110 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2113 assert (SvREFCNT(sitelib_sv) == 1);
2114 SvREFCNT_dec(sitelib_sv);
2121 scriptname = argv[0];
2124 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2126 else if (scriptname == NULL) {
2128 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2134 assert (!TAINT_get);
2138 bool suidscript = FALSE;
2140 rsfp = open_script(scriptname, dosearch, &suidscript);
2142 rsfp = PerlIO_stdin();
2143 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2146 validate_suid(rsfp);
2149 # if defined(SIGCHLD) || defined(SIGCLD)
2152 # define SIGCHLD SIGCLD
2154 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2155 if (sigstate == (Sighandler_t) SIG_IGN) {
2156 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2157 "Can't ignore signal CHLD, forcing to default");
2158 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2166 /* This will croak if suidscript is true, as -x cannot be used with
2168 forbid_setid('x', suidscript);
2169 /* Hence you can't get here if suidscript is true */
2171 linestr_sv = newSV_type(SVt_PV);
2172 lex_start_flags |= LEX_START_COPIED;
2173 find_beginning(linestr_sv, rsfp);
2174 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2175 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2179 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2180 CvUNIQUE_on(PL_compcv);
2182 CvPADLIST(PL_compcv) = pad_new(0);
2184 PL_isarev = newHV();
2187 boot_core_UNIVERSAL();
2189 newXS("Internals::V", S_Internals_V, __FILE__);
2192 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2194 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2200 # ifdef HAS_SOCKS5_INIT
2201 socks5_init(argv[0]);
2207 init_predump_symbols();
2208 /* init_postdump_symbols not currently designed to be called */
2209 /* more than once (ENV isn't cleared first, for example) */
2210 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2212 init_postdump_symbols(argc,argv,env);
2214 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2215 * or explicitly in some platforms.
2216 * locale.c:Perl_init_i18nl10n() if the environment
2217 * look like the user wants to use UTF-8. */
2218 #if defined(__SYMBIAN32__)
2219 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2221 # ifndef PERL_IS_MINIPERL
2223 /* Requires init_predump_symbols(). */
2224 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2229 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2230 * and the default open disciplines. */
2231 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2232 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2234 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2235 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2236 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2238 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2239 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2240 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2242 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2243 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2244 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2246 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2247 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2250 sv_setpvs(sv, ":utf8\0:utf8");
2252 sv_setpvs(sv, ":utf8\0");
2255 sv_setpvs(sv, "\0:utf8");
2264 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2265 if (strEQ(s, "unsafe"))
2266 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2267 else if (strEQ(s, "safe"))
2268 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2270 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2277 if (!TAINTING_get &&
2278 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2282 PL_xmlfp = PerlIO_stdout();
2284 PL_xmlfp = PerlIO_open(s, "w");
2286 Perl_croak(aTHX_ "Can't open %s", s);
2288 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2294 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2295 PL_madskills = atoi(s);
2296 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2301 lex_start(linestr_sv, rsfp, lex_start_flags);
2302 SvREFCNT_dec(linestr_sv);
2304 PL_subname = newSVpvs("main");
2306 if (add_read_e_script)
2307 filter_add(read_e_script, NULL);
2309 /* now parse the script */
2311 SETERRNO(0,SS_NORMAL);
2312 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2314 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2316 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2320 CopLINE_set(PL_curcop, 0);
2321 SET_CURSTASH(PL_defstash);
2323 SvREFCNT_dec(PL_e_script);
2331 SAVECOPFILE(PL_curcop);
2332 SAVECOPLINE(PL_curcop);
2333 gv_check(PL_defstash);
2342 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2343 dump_mstats("after compilation:");
2348 PL_restartjmpenv = NULL;
2354 =for apidoc perl_run
2356 Tells a Perl interpreter to run. See L<perlembed>.
2369 PERL_ARGS_ASSERT_PERL_RUN;
2370 #ifndef MULTIPLICITY
2371 PERL_UNUSED_ARG(my_perl);
2374 oldscope = PL_scopestack_ix;
2382 cxstack_ix = -1; /* start context stack again */
2384 case 0: /* normal completion */
2388 case 2: /* my_exit() */
2389 while (PL_scopestack_ix > oldscope)
2392 SET_CURSTASH(PL_defstash);
2393 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2394 PL_endav && !PL_minus_c) {
2395 PERL_SET_PHASE(PERL_PHASE_END);
2396 call_list(oldscope, PL_endav);
2399 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2400 dump_mstats("after execution: ");
2406 POPSTACK_TO(PL_mainstack);
2409 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2420 S_run_body(pTHX_ I32 oldscope)
2423 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2424 PL_sawampersand ? "Enabling" : "Omitting",
2425 (unsigned int)(PL_sawampersand)));
2427 if (!PL_restartop) {
2431 exit(0); /* less likely to core dump than my_exit(0) */
2435 if (DEBUG_x_TEST || DEBUG_B_TEST)
2436 dump_all_perl(!DEBUG_B_TEST);
2438 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2442 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2445 if (PERLDB_SINGLE && PL_DBsingle)
2446 sv_setiv(PL_DBsingle, 1);
2448 PERL_SET_PHASE(PERL_PHASE_INIT);
2449 call_list(oldscope, PL_initav);
2451 #ifdef PERL_DEBUG_READONLY_OPS
2452 if (PL_main_root && PL_main_root->op_slabbed)
2453 Slab_to_ro(OpSLAB(PL_main_root));
2459 PERL_SET_PHASE(PERL_PHASE_RUN);
2462 PL_restartjmpenv = NULL;
2463 PL_op = PL_restartop;
2467 else if (PL_main_start) {
2468 CvDEPTH(PL_main_cv) = 1;
2469 PL_op = PL_main_start;
2473 assert(0); /* NOTREACHED */
2477 =head1 SV Manipulation Functions
2479 =for apidoc p||get_sv
2481 Returns the SV of the specified Perl scalar. C<flags> are passed to
2482 C<gv_fetchpv>. If C<GV_ADD> is set and the
2483 Perl variable does not exist then it will be created. If C<flags> is zero
2484 and the variable does not exist then NULL is returned.
2490 Perl_get_sv(pTHX_ const char *name, I32 flags)
2494 PERL_ARGS_ASSERT_GET_SV;
2496 gv = gv_fetchpv(name, flags, SVt_PV);
2503 =head1 Array Manipulation Functions
2505 =for apidoc p||get_av
2507 Returns the AV of the specified Perl global or package array with the given
2508 name (so it won't work on lexical variables). C<flags> are passed
2509 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2510 Perl variable does not exist then it will be created. If C<flags> is zero
2511 and the variable does not exist then NULL is returned.
2513 Perl equivalent: C<@{"$name"}>.
2519 Perl_get_av(pTHX_ const char *name, I32 flags)
2521 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2523 PERL_ARGS_ASSERT_GET_AV;
2533 =head1 Hash Manipulation Functions
2535 =for apidoc p||get_hv
2537 Returns the HV of the specified Perl hash. C<flags> are passed to
2538 C<gv_fetchpv>. If C<GV_ADD> is set and the
2539 Perl variable does not exist then it will be created. If C<flags> is zero
2540 and the variable does not exist then NULL is returned.
2546 Perl_get_hv(pTHX_ const char *name, I32 flags)
2548 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2550 PERL_ARGS_ASSERT_GET_HV;
2560 =head1 CV Manipulation Functions
2562 =for apidoc p||get_cvn_flags
2564 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2565 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2566 exist then it will be declared (which has the same effect as saying
2567 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2568 then NULL is returned.
2570 =for apidoc p||get_cv
2572 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2578 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2580 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2582 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2584 /* XXX this is probably not what they think they're getting.
2585 * It has the same effect as "sub name;", i.e. just a forward
2587 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2588 return newSTUB(gv,0);
2595 /* Nothing in core calls this now, but we can't replace it with a macro and
2596 move it to mathoms.c as a macro would evaluate name twice. */
2598 Perl_get_cv(pTHX_ const char *name, I32 flags)
2600 PERL_ARGS_ASSERT_GET_CV;
2602 return get_cvn_flags(name, strlen(name), flags);
2605 /* Be sure to refetch the stack pointer after calling these routines. */
2609 =head1 Callback Functions
2611 =for apidoc p||call_argv
2613 Performs a callback to the specified named and package-scoped Perl subroutine
2614 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2616 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2622 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2624 /* See G_* flags in cop.h */
2625 /* null terminated arg list */
2630 PERL_ARGS_ASSERT_CALL_ARGV;
2635 mXPUSHs(newSVpv(*argv,0));
2640 return call_pv(sub_name, flags);
2644 =for apidoc p||call_pv
2646 Performs a callback to the specified Perl sub. See L<perlcall>.
2652 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2653 /* name of the subroutine */
2654 /* See G_* flags in cop.h */
2656 PERL_ARGS_ASSERT_CALL_PV;
2658 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2662 =for apidoc p||call_method
2664 Performs a callback to the specified Perl method. The blessed object must
2665 be on the stack. See L<perlcall>.
2671 Perl_call_method(pTHX_ const char *methname, I32 flags)
2672 /* name of the subroutine */
2673 /* See G_* flags in cop.h */
2676 PERL_ARGS_ASSERT_CALL_METHOD;
2678 len = strlen(methname);
2680 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2681 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2684 /* May be called with any of a CV, a GV, or an SV containing the name. */
2686 =for apidoc p||call_sv
2688 Performs a callback to the Perl sub whose name is in the SV. See
2695 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2696 /* See G_* flags in cop.h */
2699 LOGOP myop; /* fake syntax tree node */
2704 bool oldcatch = CATCH_GET;
2706 OP* const oldop = PL_op;
2709 PERL_ARGS_ASSERT_CALL_SV;
2711 if (flags & G_DISCARD) {
2715 if (!(flags & G_WANT)) {
2716 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2721 Zero(&myop, 1, LOGOP);
2722 if (!(flags & G_NOARGS))
2723 myop.op_flags |= OPf_STACKED;
2724 myop.op_flags |= OP_GIMME_REVERSE(flags);
2728 EXTEND(PL_stack_sp, 1);
2729 *++PL_stack_sp = sv;
2731 oldscope = PL_scopestack_ix;
2733 if (PERLDB_SUB && PL_curstash != PL_debstash
2734 /* Handle first BEGIN of -d. */
2735 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2736 /* Try harder, since this may have been a sighandler, thus
2737 * curstash may be meaningless. */
2738 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2739 && !(flags & G_NODEBUG))
2740 myop.op_private |= OPpENTERSUB_DB;
2742 if (flags & G_METHOD) {
2743 Zero(&method_op, 1, UNOP);
2744 method_op.op_next = (OP*)&myop;
2745 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2746 method_op.op_type = OP_METHOD;
2747 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2748 myop.op_type = OP_ENTERSUB;
2749 PL_op = (OP*)&method_op;
2752 if (!(flags & G_EVAL)) {
2754 CALL_BODY_SUB((OP*)&myop);
2755 retval = PL_stack_sp - (PL_stack_base + oldmark);
2756 CATCH_SET(oldcatch);
2759 myop.op_other = (OP*)&myop;
2761 create_eval_scope(flags|G_FAKINGEVAL);
2769 CALL_BODY_SUB((OP*)&myop);
2770 retval = PL_stack_sp - (PL_stack_base + oldmark);
2771 if (!(flags & G_KEEPERR)) {
2779 /* my_exit() was called */
2780 SET_CURSTASH(PL_defstash);
2784 assert(0); /* NOTREACHED */
2787 PL_restartjmpenv = NULL;
2788 PL_op = PL_restartop;
2792 PL_stack_sp = PL_stack_base + oldmark;
2793 if ((flags & G_WANT) == G_ARRAY)
2797 *++PL_stack_sp = &PL_sv_undef;
2802 if (PL_scopestack_ix > oldscope)
2803 delete_eval_scope();
2807 if (flags & G_DISCARD) {
2808 PL_stack_sp = PL_stack_base + oldmark;
2817 /* Eval a string. The G_EVAL flag is always assumed. */
2820 =for apidoc p||eval_sv
2822 Tells Perl to C<eval> the string in the SV. It supports the same flags
2823 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2829 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2831 /* See G_* flags in cop.h */
2835 UNOP myop; /* fake syntax tree node */
2836 VOL I32 oldmark = SP - PL_stack_base;
2839 OP* const oldop = PL_op;
2842 PERL_ARGS_ASSERT_EVAL_SV;
2844 if (flags & G_DISCARD) {
2851 Zero(&myop, 1, UNOP);
2852 EXTEND(PL_stack_sp, 1);
2853 *++PL_stack_sp = sv;
2855 if (!(flags & G_NOARGS))
2856 myop.op_flags = OPf_STACKED;
2857 myop.op_type = OP_ENTEREVAL;
2858 myop.op_flags |= OP_GIMME_REVERSE(flags);
2859 if (flags & G_KEEPERR)
2860 myop.op_flags |= OPf_SPECIAL;
2862 if (flags & G_RE_REPARSING)
2863 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2865 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2866 * before a PUSHEVAL, which corrupts the stack after a croak */
2867 TAINT_PROPER("eval_sv()");
2873 if (PL_op == (OP*)(&myop)) {
2874 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2876 goto fail; /* failed in compilation */
2879 retval = PL_stack_sp - (PL_stack_base + oldmark);
2880 if (!(flags & G_KEEPERR)) {
2888 /* my_exit() was called */
2889 SET_CURSTASH(PL_defstash);
2893 assert(0); /* NOTREACHED */
2896 PL_restartjmpenv = NULL;
2897 PL_op = PL_restartop;
2902 PL_stack_sp = PL_stack_base + oldmark;
2903 if ((flags & G_WANT) == G_ARRAY)
2907 *++PL_stack_sp = &PL_sv_undef;
2913 if (flags & G_DISCARD) {
2914 PL_stack_sp = PL_stack_base + oldmark;
2924 =for apidoc p||eval_pv
2926 Tells Perl to C<eval> the given string and return an SV* result.
2932 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2935 SV* sv = newSVpv(p, 0);
2937 PERL_ARGS_ASSERT_EVAL_PV;
2939 eval_sv(sv, G_SCALAR);
2948 /* just check empty string or undef? */
2949 if (croak_on_error) {
2950 SV * const errsv = ERRSV;
2951 if(SvTRUE_NN(errsv))
2952 /* replace with croak_sv? */
2953 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2959 /* Require a module. */
2962 =head1 Embedding Functions
2964 =for apidoc p||require_pv
2966 Tells Perl to C<require> the file named by the string argument. It is
2967 analogous to the Perl code C<eval "require '$file'">. It's even
2968 implemented that way; consider using load_module instead.
2973 Perl_require_pv(pTHX_ const char *pv)
2979 PERL_ARGS_ASSERT_REQUIRE_PV;
2981 PUSHSTACKi(PERLSI_REQUIRE);
2983 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2984 eval_sv(sv_2mortal(sv), G_DISCARD);
2990 S_usage(pTHX) /* XXX move this out into a module ? */
2992 /* This message really ought to be max 23 lines.
2993 * Removed -h because the user already knows that option. Others? */
2995 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2996 minimum of 509 character string literals. */
2997 static const char * const usage_msg[] = {
2998 " -0[octal] specify record separator (\\0, if no argument)\n"
2999 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
3000 " -C[number/list] enables the listed Unicode features\n"
3001 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
3002 " -d[:debugger] run program under debugger\n"
3003 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3004 " -e program one line of program (several -e's allowed, omit programfile)\n"
3005 " -E program like -e, but enables all optional features\n"
3006 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3007 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3008 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3009 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3010 " -l[octal] enable line ending processing, specifies line terminator\n"
3011 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3012 " -n assume \"while (<>) { ... }\" loop around program\n"
3013 " -p assume loop like -n but print line also, like sed\n"
3014 " -s enable rudimentary parsing for switches after programfile\n"
3015 " -S look for programfile using PATH environment variable\n",
3016 " -t enable tainting warnings\n"
3017 " -T enable tainting checks\n"
3018 " -u dump core after parsing program\n"
3019 " -U allow unsafe operations\n"
3020 " -v print version, patchlevel and license\n"
3021 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3022 " -w enable many useful warnings\n"
3023 " -W enable all warnings\n"
3024 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3025 " -X disable all warnings\n"
3027 "Run 'perldoc perl' for more help with Perl.\n\n",
3030 const char * const *p = usage_msg;
3031 PerlIO *out = PerlIO_stdout();
3034 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3037 PerlIO_puts(out, *p++);
3041 /* convert a string of -D options (or digits) into an int.
3042 * sets *s to point to the char after the options */
3046 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3048 static const char * const usage_msgd[] = {
3049 " Debugging flag values: (see also -d)\n"
3050 " p Tokenizing and parsing (with v, displays parse stack)\n"
3051 " s Stack snapshots (with v, displays all stacks)\n"
3052 " l Context (loop) stack processing\n"
3053 " t Trace execution\n"
3054 " o Method and overloading resolution\n",
3055 " c String/numeric conversions\n"
3056 " P Print profiling info, source file input state\n"
3057 " m Memory and SV allocation\n"
3058 " f Format processing\n"
3059 " r Regular expression parsing and execution\n"
3060 " x Syntax tree dump\n",
3061 " u Tainting checks\n"
3062 " H Hash dump -- usurps values()\n"
3063 " X Scratchpad allocation\n"
3065 " S Op slab allocation\n"
3067 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3068 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3069 " v Verbose: use in conjunction with other flags\n"
3070 " C Copy On Write\n"
3071 " A Consistency checks on internal structures\n"
3072 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3073 " M trace smart match resolution\n"
3074 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3079 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3082 /* if adding extra options, remember to update DEBUG_MASK */
3083 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
3085 for (; isWORDCHAR(**s); (*s)++) {
3086 const char * const d = strchr(debopts,**s);
3088 i |= 1 << (d - debopts);
3089 else if (ckWARN_d(WARN_DEBUGGING))
3090 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3091 "invalid option -D%c, use -D'' to see choices\n", **s);
3094 else if (isDIGIT(**s)) {
3096 for (; isWORDCHAR(**s); (*s)++) ;
3098 else if (givehelp) {
3099 const char *const *p = usage_msgd;
3100 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3103 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3104 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3105 "-Dp not implemented on this platform\n");
3111 /* This routine handles any switches that can be given during run */
3114 Perl_moreswitches(pTHX_ const char *s)
3118 const char option = *s; /* used to remember option in -m/-M code */
3120 PERL_ARGS_ASSERT_MORESWITCHES;
3128 SvREFCNT_dec(PL_rs);
3129 if (s[1] == 'x' && s[2]) {
3130 const char *e = s+=2;
3136 flags = PERL_SCAN_SILENT_ILLDIGIT;
3137 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3138 if (s + numlen < e) {
3139 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3143 PL_rs = newSVpvs("");
3144 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3145 tmps = (U8*)SvPVX(PL_rs);
3146 uvchr_to_utf8(tmps, rschar);
3147 SvCUR_set(PL_rs, UNISKIP(rschar));
3152 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3153 if (rschar & ~((U8)~0))
3154 PL_rs = &PL_sv_undef;
3155 else if (!rschar && numlen >= 2)
3156 PL_rs = newSVpvs("");
3158 char ch = (char)rschar;
3159 PL_rs = newSVpvn(&ch, 1);
3162 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3167 PL_unicode = parse_unicode_opts( (const char **)&s );
3168 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3174 while (*s && !isSPACE(*s)) ++s;
3175 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3186 forbid_setid('d', FALSE);
3189 /* -dt indicates to the debugger that threads will be used */
3190 if (*s == 't' && !isWORDCHAR(s[1])) {
3192 my_setenv("PERL5DB_THREADED", "1");
3195 /* The following permits -d:Mod to accepts arguments following an =
3196 in the fashion that -MSome::Mod does. */
3197 if (*s == ':' || *s == '=') {
3204 sv = newSVpvs("no Devel::");
3206 sv = newSVpvs("use Devel::");
3210 end = s + strlen(s);
3212 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3213 while(isWORDCHAR(*s) || *s==':') ++s;
3215 sv_catpvn(sv, start, end - start);
3217 sv_catpvn(sv, start, s-start);
3218 /* Don't use NUL as q// delimiter here, this string goes in the
3220 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3223 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3227 PL_perldb = PERLDB_ALL;
3234 forbid_setid('D', FALSE);
3236 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3237 #else /* !DEBUGGING */
3238 if (ckWARN_d(WARN_DEBUGGING))
3239 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3240 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3241 for (s++; isWORDCHAR(*s); s++) ;
3248 Safefree(PL_inplace);
3249 #if defined(__CYGWIN__) /* do backup extension automagically */
3250 if (*(s+1) == '\0') {
3251 PL_inplace = savepvs(".bak");
3254 #endif /* __CYGWIN__ */
3256 const char * const start = ++s;
3257 while (*s && !isSPACE(*s))
3260 PL_inplace = savepvn(start, s - start);
3264 if (*s == '-') /* Additional switches on #! line. */
3268 case 'I': /* -I handled both here and in parse_body() */
3269 forbid_setid('I', FALSE);
3271 while (*s && isSPACE(*s))
3276 /* ignore trailing spaces (possibly followed by other switches) */
3278 for (e = p; *e && !isSPACE(*e); e++) ;
3282 } while (*p && *p != '-');
3284 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3290 Perl_croak(aTHX_ "No directory specified for -I");
3296 SvREFCNT_dec(PL_ors_sv);
3302 PL_ors_sv = newSVpvs("\n");
3303 numlen = 3 + (*s == '0');
3304 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3308 if (RsPARA(PL_rs)) {
3309 PL_ors_sv = newSVpvs("\n\n");
3312 PL_ors_sv = newSVsv(PL_rs);
3317 forbid_setid('M', FALSE); /* XXX ? */
3320 forbid_setid('m', FALSE); /* XXX ? */
3325 const char *use = "use ";
3327 /* -M-foo == 'no foo' */
3328 /* Leading space on " no " is deliberate, to make both
3329 possibilities the same length. */
3330 if (*s == '-') { use = " no "; ++s; }
3331 sv = newSVpvn(use,4);
3333 /* We allow -M'Module qw(Foo Bar)' */
3334 while(isWORDCHAR(*s) || *s==':') {
3343 Perl_croak(aTHX_ "Module name required with -%c option",
3346 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3347 "contains single ':'",
3348 (int)(s - start), start, option);
3349 end = s + strlen(s);
3351 sv_catpvn(sv, start, end - start);
3352 if (option == 'm') {
3354 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3355 sv_catpvs( sv, " ()");
3358 sv_catpvn(sv, start, s-start);
3359 /* Use NUL as q''-delimiter. */
3360 sv_catpvs(sv, " split(/,/,q\0");
3362 sv_catpvn(sv, s, end - s);
3363 sv_catpvs(sv, "\0)");
3366 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3369 Perl_croak(aTHX_ "Missing argument to -%c", option);
3380 forbid_setid('s', FALSE);
3381 PL_doswitches = TRUE;
3386 #if SILENT_NO_TAINT_SUPPORT
3387 /* silently ignore */
3388 #elif NO_TAINT_SUPPORT
3389 Perl_croak_nocontext("This perl was compiled without taint support. "
3390 "Cowardly refusing to run with -t or -T flags");
3398 PL_do_undump = TRUE;
3408 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3409 PL_dowarn |= G_WARN_ON;
3414 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3415 if (!specialWARN(PL_compiling.cop_warnings))
3416 PerlMemShared_free(PL_compiling.cop_warnings);
3417 PL_compiling.cop_warnings = pWARN_ALL ;
3421 PL_dowarn = G_WARN_ALL_OFF;
3422 if (!specialWARN(PL_compiling.cop_warnings))
3423 PerlMemShared_free(PL_compiling.cop_warnings);
3424 PL_compiling.cop_warnings = pWARN_NONE ;
3431 if (s[0] == '-') /* Additional switches on #! line. */
3436 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3442 #ifdef ALTERNATE_SHEBANG
3443 case 'S': /* OS/2 needs -S on "extproc" line. */
3446 case 'e': case 'f': case 'x': case 'E':
3447 #ifndef ALTERNATE_SHEBANG
3451 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3454 "Unrecognized switch: -%.1s (-h will show valid options)",s
3464 PerlIO * PIO_stdout;
3465 if (!sv_derived_from(PL_patchlevel, "version"))
3466 upg_version(PL_patchlevel, TRUE);
3469 SV* level= vstringify(PL_patchlevel);
3470 #ifdef PERL_PATCHNUM
3471 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3472 SV *num = newSVpvs(PERL_PATCHNUM "*");
3474 SV *num = newSVpvs(PERL_PATCHNUM);
3477 STRLEN level_len, num_len;
3478 char * level_str, * num_str;
3479 num_str = SvPV(num, num_len);
3480 level_str = SvPV(level, level_len);
3481 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3482 SvREFCNT_dec(level);
3485 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3490 PIO_stdout = PerlIO_stdout();
3491 PerlIO_printf(PIO_stdout,
3492 "\nThis is perl " STRINGIFY(PERL_REVISION)
3493 ", version " STRINGIFY(PERL_VERSION)
3494 ", subversion " STRINGIFY(PERL_SUBVERSION)
3495 " (%"SVf") built for " ARCHNAME, level
3497 SvREFCNT_dec(level);
3500 PIO_stdout = PerlIO_stdout();
3501 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3502 PerlIO_printf(PIO_stdout,
3503 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3504 SVfARG(vstringify(PL_patchlevel))));
3505 PerlIO_printf(PIO_stdout,
3506 Perl_form(aTHX_ " built under %s at %s %s\n",
3507 OSNAME, __DATE__, __TIME__));
3508 PerlIO_printf(PIO_stdout,
3509 Perl_form(aTHX_ " OS Specific Release: %s\n",
3512 #if defined(LOCAL_PATCH_COUNT)
3513 if (LOCAL_PATCH_COUNT > 0)
3514 PerlIO_printf(PIO_stdout,
3515 "\n(with %d registered patch%s, "
3516 "see perl -V for more detail)",
3518 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3521 PerlIO_printf(PIO_stdout,
3522 "\n\nCopyright 1987-2013, Larry Wall\n");
3524 PerlIO_printf(PIO_stdout,
3525 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3528 PerlIO_printf(PIO_stdout,
3529 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3530 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3533 PerlIO_printf(PIO_stdout,
3534 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3535 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3538 PerlIO_printf(PIO_stdout,
3539 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3542 PerlIO_printf(PIO_stdout,
3543 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3546 PerlIO_printf(PIO_stdout,
3547 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3550 PerlIO_printf(PIO_stdout,
3551 "WINCE port by Rainer Keuchel, 2001-2002\n"
3552 "Built on " __DATE__ " " __TIME__ "\n\n");
3555 #ifdef __SYMBIAN32__
3556 PerlIO_printf(PIO_stdout,
3557 "Symbian port by Nokia, 2004-2005\n");
3559 #ifdef BINARY_BUILD_NOTICE
3560 BINARY_BUILD_NOTICE;
3562 PerlIO_printf(PIO_stdout,
3564 Perl may be copied only under the terms of either the Artistic License or the\n\
3565 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3566 Complete documentation for Perl, including FAQ lists, should be found on\n\
3567 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3568 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3572 /* compliments of Tom Christiansen */
3574 /* unexec() can be found in the Gnu emacs distribution */
3575 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3578 #include <lib$routines.h>
3582 Perl_my_unexec(pTHX)
3584 PERL_UNUSED_CONTEXT;
3586 SV * prog = newSVpv(BIN_EXP, 0);
3587 SV * file = newSVpv(PL_origfilename, 0);
3591 sv_catpvs(prog, "/perl");
3592 sv_catpvs(file, ".perldump");
3594 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3595 /* unexec prints msg to stderr in case of failure */
3596 PerlProc_exit(status);
3599 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3600 # elif defined(WIN32) || defined(__CYGWIN__)
3601 Perl_croak(aTHX_ "dump is not supported");
3603 ABORT(); /* for use with undump */
3608 /* initialize curinterp */
3614 # define PERLVAR(prefix,var,type)
3615 # define PERLVARA(prefix,var,n,type)
3616 # if defined(PERL_IMPLICIT_CONTEXT)
3617 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3618 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3620 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3621 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3623 # include "intrpvar.h"
3629 # define PERLVAR(prefix,var,type)
3630 # define PERLVARA(prefix,var,n,type)
3631 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3632 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3633 # include "intrpvar.h"
3640 /* As these are inside a structure, PERLVARI isn't capable of initialising
3642 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3643 PL_reg_poscache = PL_reg_starttry = NULL;
3647 S_init_main_stash(pTHX)
3652 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3653 /* We know that the string "main" will be in the global shared string
3654 table, so it's a small saving to use it rather than allocate another
3656 PL_curstname = newSVpvs_share("main");
3657 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3658 /* If we hadn't caused another reference to "main" to be in the shared
3659 string table above, then it would be worth reordering these two,
3660 because otherwise all we do is delete "main" from it as a consequence
3661 of the SvREFCNT_dec, only to add it again with hv_name_set */
3662 SvREFCNT_dec(GvHV(gv));
3663 hv_name_set(PL_defstash, "main", 4, 0);
3664 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3666 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3668 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3669 GvMULTI_on(PL_incgv);
3670 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3671 GvMULTI_on(PL_hintgv);
3672 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3673 SvREFCNT_inc_simple_void(PL_defgv);
3674 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3675 SvREFCNT_inc_simple_void(PL_errgv);
3676 GvMULTI_on(PL_errgv);
3677 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3678 GvMULTI_on(PL_replgv);
3679 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3680 #ifdef PERL_DONT_CREATE_GVSV
3683 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3685 SET_CURSTASH(PL_defstash);
3686 CopSTASH_set(&PL_compiling, PL_defstash);
3687 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3688 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3690 /* We must init $/ before switches are processed. */
3691 sv_setpvs(get_sv("/", GV_ADD), "\n");
3695 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3698 PerlIO *rsfp = NULL;
3702 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3705 PL_origfilename = savepvs("-e");
3708 /* if find_script() returns, it returns a malloc()-ed value */
3709 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3711 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3712 const char *s = scriptname + 8;
3718 * Tell apart "normal" usage of fdscript, e.g.
3719 * with bash on FreeBSD:
3720 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3721 * from usage in suidperl.
3722 * Does any "normal" usage leave garbage after the number???
3723 * Is it a mistake to use a similar /dev/fd/ construct for
3728 * Be supersafe and do some sanity-checks.
3729 * Still, can we be sure we got the right thing?
3732 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3735 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3737 scriptname = savepv(s + 1);
3738 Safefree(PL_origfilename);
3739 PL_origfilename = (char *)scriptname;
3744 CopFILE_free(PL_curcop);
3745 CopFILE_set(PL_curcop, PL_origfilename);
3746 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3747 scriptname = (char *)"";
3748 if (fdscript >= 0) {
3749 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3751 else if (!*scriptname) {
3752 forbid_setid(0, *suidscript);
3756 #ifdef FAKE_BIT_BUCKET
3757 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3758 * is called) and still have the "-e" work. (Believe it or not,
3759 * a /dev/null is required for the "-e" to work because source
3760 * filter magic is used to implement it. ) This is *not* a general
3761 * replacement for a /dev/null. What we do here is create a temp
3762 * file (an empty file), open up that as the script, and then
3763 * immediately close and unlink it. Close enough for jazz. */
3764 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3765 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3766 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3767 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3768 FAKE_BIT_BUCKET_TEMPLATE
3770 const char * const err = "Failed to create a fake bit bucket";
3771 if (strEQ(scriptname, BIT_BUCKET)) {
3772 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3773 int tmpfd = mkstemp(tmpname);
3775 scriptname = tmpname;
3778 Perl_croak(aTHX_ err);
3781 scriptname = mktemp(tmpname);
3783 Perl_croak(aTHX_ err);
3788 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3789 #ifdef FAKE_BIT_BUCKET
3790 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3791 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3792 && strlen(scriptname) == sizeof(tmpname) - 1) {
3795 scriptname = BIT_BUCKET;
3799 /* PSz 16 Sep 03 Keep neat error message */
3801 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3803 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3804 CopFILE(PL_curcop), Strerror(errno));
3806 #if defined(HAS_FCNTL) && defined(F_SETFD)
3807 /* ensure close-on-exec */
3808 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3811 if (PerlLIO_fstat(PerlIO_fileno(rsfp), &tmpstatbuf) >= 0
3812 && S_ISDIR(tmpstatbuf.st_mode))
3813 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3821 * I_SYSSTATVFS HAS_FSTATVFS
3823 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3824 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3825 * here so that metaconfig picks them up. */
3828 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3829 /* Don't even need this function. */
3832 S_validate_suid(pTHX_ PerlIO *rsfp)
3834 const UV my_uid = PerlProc_getuid();
3835 const UV my_euid = PerlProc_geteuid();
3836 const UV my_gid = PerlProc_getgid();
3837 const UV my_egid = PerlProc_getegid();
3839 PERL_ARGS_ASSERT_VALIDATE_SUID;
3841 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3844 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3845 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3847 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3850 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3851 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3852 /* not set-id, must be wrapped */
3855 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3858 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3864 PERL_ARGS_ASSERT_FIND_BEGINNING;
3866 /* skip forward in input to the real script? */
3869 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3870 Perl_croak(aTHX_ "No Perl script found in input\n");
3872 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3873 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3874 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3876 while (*s == ' ' || *s == '\t') s++;
3878 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3879 || s2[-1] == '_') s2--;
3880 if (strnEQ(s2-4,"perl",4))
3881 while ((s = moreswitches(s)))
3890 /* no need to do anything here any more if we don't
3892 #if !NO_TAINT_SUPPORT
3894 const UV my_uid = PerlProc_getuid();
3895 const UV my_euid = PerlProc_geteuid();
3896 const UV my_gid = PerlProc_getgid();
3897 const UV my_egid = PerlProc_getegid();
3899 /* Should not happen: */
3900 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3901 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3905 * Should go by suidscript, not uid!=euid: why disallow
3906 * system("ls") in scripts run from setuid things?
3907 * Or, is this run before we check arguments and set suidscript?
3908 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3909 * (We never have suidscript, can we be sure to have fdscript?)
3910 * Or must then go by UID checks? See comments in forbid_setid also.
3914 /* This is used very early in the lifetime of the program,
3915 * before even the options are parsed, so PL_tainting has
3916 * not been initialized properly. */
3918 Perl_doing_taint(int argc, char *argv[], char *envp[])
3920 #ifndef PERL_IMPLICIT_SYS
3921 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3922 * before we have an interpreter-- and the whole point of this
3923 * function is to be called at such an early stage. If you are on
3924 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3925 * "tainted because running with altered effective ids', you'll
3926 * have to add your own checks somewhere in here. The two most
3927 * known samples of 'implicitness' are Win32 and NetWare, neither
3928 * of which has much of concept of 'uids'. */
3929 int uid = PerlProc_getuid();
3930 int euid = PerlProc_geteuid();
3931 int gid = PerlProc_getgid();
3932 int egid = PerlProc_getegid();
3939 if (uid && (euid != uid || egid != gid))
3941 #endif /* !PERL_IMPLICIT_SYS */
3942 /* This is a really primitive check; environment gets ignored only
3943 * if -T are the first chars together; otherwise one gets
3944 * "Too late" message. */
3945 if ( argc > 1 && argv[1][0] == '-'
3946 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3951 /* Passing the flag as a single char rather than a string is a slight space
3952 optimisation. The only message that isn't /^-.$/ is
3953 "program input from stdin", which is substituted in place of '\0', which
3954 could never be a command line flag. */
3956 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3959 char string[3] = "-x";
3960 const char *message = "program input from stdin";
3967 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3968 if (PerlProc_getuid() != PerlProc_geteuid())
3969 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3970 if (PerlProc_getgid() != PerlProc_getegid())
3971 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3972 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3974 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3978 Perl_init_dbargs(pTHX)
3980 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3985 /* Someone has already created it.
3986 It might have entries, and if we just turn off AvREAL(), they will
3987 "leak" until global destruction. */
3989 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3990 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3992 AvREIFY_only(PL_dbargs);
3996 Perl_init_debugger(pTHX)
3999 HV * const ostash = PL_curstash;
4001 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
4003 Perl_init_dbargs(aTHX);
4004 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
4005 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
4006 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
4007 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4008 if (!SvIOK(PL_DBsingle))
4009 sv_setiv(PL_DBsingle, 0);
4010 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4011 if (!SvIOK(PL_DBtrace))
4012 sv_setiv(PL_DBtrace, 0);
4013 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4014 if (!SvIOK(PL_DBsignal))
4015 sv_setiv(PL_DBsignal, 0);
4016 SvREFCNT_dec(PL_curstash);
4017 PL_curstash = ostash;
4020 #ifndef STRESS_REALLOC
4021 #define REASONABLE(size) (size)
4023 #define REASONABLE(size) (1) /* unreasonable */
4027 Perl_init_stacks(pTHX)
4030 /* start with 128-item stack and 8K cxstack */
4031 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4032 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4033 PL_curstackinfo->si_type = PERLSI_MAIN;
4034 PL_curstack = PL_curstackinfo->si_stack;
4035 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4037 PL_stack_base = AvARRAY(PL_curstack);
4038 PL_stack_sp = PL_stack_base;
4039 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4041 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4044 PL_tmps_max = REASONABLE(128);
4046 Newx(PL_markstack,REASONABLE(32),I32);
4047 PL_markstack_ptr = PL_markstack;
4048 PL_markstack_max = PL_markstack + REASONABLE(32);
4052 Newx(PL_scopestack,REASONABLE(32),I32);
4054 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4056 PL_scopestack_ix = 0;
4057 PL_scopestack_max = REASONABLE(32);
4059 Newx(PL_savestack,REASONABLE(128),ANY);
4060 PL_savestack_ix = 0;
4061 PL_savestack_max = REASONABLE(128);
4070 while (PL_curstackinfo->si_next)
4071 PL_curstackinfo = PL_curstackinfo->si_next;
4072 while (PL_curstackinfo) {
4073 PERL_SI *p = PL_curstackinfo->si_prev;
4074 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4075 Safefree(PL_curstackinfo->si_cxstack);
4076 Safefree(PL_curstackinfo);
4077 PL_curstackinfo = p;
4079 Safefree(PL_tmps_stack);
4080 Safefree(PL_markstack);
4081 Safefree(PL_scopestack);
4083 Safefree(PL_scopestack_name);
4085 Safefree(PL_savestack);
4089 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4091 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4092 AV *const isa = GvAVn(gv);
4095 PERL_ARGS_ASSERT_POPULATE_ISA;
4097 if(AvFILLp(isa) != -1)
4100 /* NOTE: No support for tied ISA */
4102 va_start(args, len);
4104 const char *const parent = va_arg(args, const char*);
4109 parent_len = va_arg(args, size_t);
4111 /* Arguments are supplied with a trailing :: */
4112 assert(parent_len > 2);
4113 assert(parent[parent_len - 1] == ':');
4114 assert(parent[parent_len - 2] == ':');
4115 av_push(isa, newSVpvn(parent, parent_len - 2));
4116 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4123 S_init_predump_symbols(pTHX)
4129 sv_setpvs(get_sv("\"", GV_ADD), " ");
4130 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4133 /* Historically, PVIOs were blessed into IO::Handle, unless
4134 FileHandle was loaded, in which case they were blessed into
4135 that. Action at a distance.
4136 However, if we simply bless into IO::Handle, we break code
4137 that assumes that PVIOs will have (among others) a seek
4138 method. IO::File inherits from IO::Handle and IO::Seekable,
4139 and provides the needed methods. But if we simply bless into
4140 it, then we break code that assumed that by loading
4141 IO::Handle, *it* would work.
4142 So a compromise is to set up the correct @IO::File::ISA,
4143 so that code that does C<use IO::Handle>; will still work.
4146 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4147 STR_WITH_LEN("IO::Handle::"),
4148 STR_WITH_LEN("IO::Seekable::"),
4149 STR_WITH_LEN("Exporter::"),
4152 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4153 GvMULTI_on(PL_stdingv);
4154 io = GvIOp(PL_stdingv);
4155 IoTYPE(io) = IoTYPE_RDONLY;
4156 IoIFP(io) = PerlIO_stdin();
4157 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4159 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4161 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4164 IoTYPE(io) = IoTYPE_WRONLY;
4165 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4167 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4169 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4171 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4172 GvMULTI_on(PL_stderrgv);
4173 io = GvIOp(PL_stderrgv);
4174 IoTYPE(io) = IoTYPE_WRONLY;
4175 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4176 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4178 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4180 PL_statname = newSVpvs(""); /* last filename we did stat on */
4184 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4188 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4190 argc--,argv++; /* skip name of script */
4191 if (PL_doswitches) {
4192 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4196 if (argv[0][1] == '-' && !argv[0][2]) {
4200 if ((s = strchr(argv[0], '='))) {
4201 const char *const start_name = argv[0] + 1;
4202 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4203 TRUE, SVt_PV)), s + 1);
4206 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4209 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4210 GvMULTI_on(PL_argvgv);
4211 (void)gv_AVadd(PL_argvgv);
4212 av_clear(GvAVn(PL_argvgv));
4213 for (; argc > 0; argc--,argv++) {
4214 SV * const sv = newSVpv(argv[0],0);
4215 av_push(GvAVn(PL_argvgv),sv);
4216 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4217 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4220 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4221 (void)sv_utf8_decode(sv);
4225 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4226 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4227 "-i used with no filenames on the command line, "
4228 "reading from STDIN");
4232 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4237 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4239 PL_toptarget = newSV_type(SVt_PVIV);
4240 sv_setpvs(PL_toptarget, "");
4241 PL_bodytarget = newSV_type(SVt_PVIV);
4242 sv_setpvs(PL_bodytarget, "");
4243 PL_formtarget = PL_bodytarget;
4247 init_argv_symbols(argc,argv);
4249 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4250 sv_setpv(GvSV(tmpgv),PL_origfilename);
4252 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4254 bool env_is_not_environ;
4255 GvMULTI_on(PL_envgv);
4256 hv = GvHVn(PL_envgv);
4257 hv_magic(hv, NULL, PERL_MAGIC_env);
4259 #ifdef USE_ENVIRON_ARRAY
4260 /* Note that if the supplied env parameter is actually a copy
4261 of the global environ then it may now point to free'd memory
4262 if the environment has been modified since. To avoid this
4263 problem we treat env==NULL as meaning 'use the default'
4267 env_is_not_environ = env != environ;
4268 if (env_is_not_environ
4269 # ifdef USE_ITHREADS
4270 && PL_curinterp == aTHX
4279 for (; *env; env++) {
4282 if (!(s = strchr(old_var,'=')) || s == old_var)
4285 #if defined(MSDOS) && !defined(DJGPP)
4287 (void)strupr(old_var);
4290 sv = newSVpv(s+1, 0);
4291 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4292 if (env_is_not_environ)
4296 #endif /* USE_ENVIRON_ARRAY */
4297 #endif /* !PERL_MICRO */
4301 /* touch @F array to prevent spurious warnings 20020415 MJD */
4303 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4308 S_init_perllib(pTHX)
4312 const char *perl5lib = NULL;
4315 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4319 if (!TAINTING_get) {
4321 perl5lib = PerlEnv_getenv("PERL5LIB");
4323 * It isn't possible to delete an environment variable with
4324 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4325 * case we treat PERL5LIB as undefined if it has a zero-length value.
4327 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4328 if (perl5lib && *perl5lib != '\0')
4332 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4334 s = PerlEnv_getenv("PERLLIB");
4336 incpush_use_sep(s, 0, 0);
4339 /* Treat PERL5?LIB as a possible search list logical name -- the
4340 * "natural" VMS idiom for a Unix path string. We allow each
4341 * element to be a set of |-separated directories for compatibility.
4345 if (my_trnlnm("PERL5LIB",buf,0))
4347 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4348 } while (my_trnlnm("PERL5LIB",buf,++idx));
4350 while (my_trnlnm("PERLLIB",buf,idx++))
4351 incpush_use_sep(buf, 0, 0);
4356 #ifndef PERL_IS_MINIPERL
4357 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4358 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4360 /* Use the ~-expanded versions of APPLLIB (undocumented),
4361 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4364 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4365 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4369 /* sitearch is always relative to sitelib on Windows for
4370 * DLL-based path intuition to work correctly */
4371 # if !defined(WIN32)
4372 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4373 INCPUSH_CAN_RELOCATE);
4379 /* this picks up sitearch as well */
4380 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4382 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4384 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4388 #ifdef PERL_VENDORARCH_EXP
4389 /* vendorarch is always relative to vendorlib on Windows for
4390 * DLL-based path intuition to work correctly */
4391 # if !defined(WIN32)
4392 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4393 INCPUSH_CAN_RELOCATE);
4397 #ifdef PERL_VENDORLIB_EXP
4399 /* this picks up vendorarch as well */
4400 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4402 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4404 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4405 INCPUSH_CAN_RELOCATE);
4410 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4414 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4418 s = win32_get_privlib(PERL_FS_VERSION, &len);
4420 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4423 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4425 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4429 #ifdef PERL_OTHERLIBDIRS
4430 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4431 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4432 |INCPUSH_CAN_RELOCATE);
4435 if (!TAINTING_get) {
4438 * It isn't possible to delete an environment variable with
4439 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4440 * case we treat PERL5LIB as undefined if it has a zero-length value.
4442 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4443 if (perl5lib && *perl5lib != '\0')
4447 incpush_use_sep(perl5lib, 0,
4448 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4450 /* Treat PERL5?LIB as a possible search list logical name -- the
4451 * "natural" VMS idiom for a Unix path string. We allow each
4452 * element to be a set of |-separated directories for compatibility.
4456 if (my_trnlnm("PERL5LIB",buf,0))
4458 incpush_use_sep(buf, 0,
4459 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4460 } while (my_trnlnm("PERL5LIB",buf,++idx));
4464 /* Use the ~-expanded versions of APPLLIB (undocumented),
4465 SITELIB and VENDORLIB for older versions
4468 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4469 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4472 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4473 /* Search for version-specific dirs below here */
4474 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4475 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4479 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4480 /* Search for version-specific dirs below here */
4481 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4482 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4485 #ifdef PERL_OTHERLIBDIRS
4486 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4487 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4488 |INCPUSH_CAN_RELOCATE);
4490 #endif /* !PERL_IS_MINIPERL */
4493 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4496 #if defined(DOSISH) || defined(__SYMBIAN32__)
4497 # define PERLLIB_SEP ';'
4500 # define PERLLIB_SEP '|'
4502 # define PERLLIB_SEP ':'
4505 #ifndef PERLLIB_MANGLE
4506 # define PERLLIB_MANGLE(s,n) (s)
4509 #ifndef PERL_IS_MINIPERL
4510 /* Push a directory onto @INC if it exists.
4511 Generate a new SV if we do this, to save needing to copy the SV we push
4514 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4519 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4521 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4522 S_ISDIR(tmpstatbuf.st_mode)) {
4524 dir = newSVsv(stem);
4526 /* Truncate dir back to stem. */
4527 SvCUR_set(dir, SvCUR(stem));
4534 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4536 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4539 PERL_ARGS_ASSERT_MAYBERELOCATE;
4542 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4543 defined to so something (in os2/os2.c), but the code has been
4544 this way, ignoring any possible changed of length, since
4545 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4547 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4553 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4555 while (unix[len-1] == '/') len--; /* Cosmetic */
4556 sv_usepvn(libdir,unix,len);
4559 PerlIO_printf(Perl_error_log,
4560 "Failed to unixify @INC element \"%s\"\n",
4561 SvPV_nolen_const(libdir));
4565 /* Do the if() outside the #ifdef to avoid warnings about an unused
4568 #ifdef PERL_RELOCATABLE_INC
4570 * Relocatable include entries are marked with a leading .../
4573 * 0: Remove that leading ".../"
4574 * 1: Remove trailing executable name (anything after the last '/')
4575 * from the perl path to give a perl prefix
4577 * While the @INC element starts "../" and the prefix ends with a real
4578 * directory (ie not . or ..) chop that real directory off the prefix
4579 * and the leading "../" from the @INC element. ie a logical "../"
4581 * Finally concatenate the prefix and the remainder of the @INC element
4582 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4583 * generates /usr/local/lib/perl5
4585 const char *libpath = SvPVX(libdir);
4586 STRLEN libpath_len = SvCUR(libdir);
4587 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4589 SV * const caret_X = get_sv("\030", 0);
4590 /* Going to use the SV just as a scratch buffer holding a C
4596 /* $^X is *the* source of taint if tainting is on, hence
4597 SvPOK() won't be true. */
4599 assert(SvPOKp(caret_X));
4600 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4602 /* Firstly take off the leading .../
4603 If all else fail we'll do the paths relative to the current
4605 sv_chop(libdir, libpath + 4);
4606 /* Don't use SvPV as we're intentionally bypassing taining,
4607 mortal copies that the mg_get of tainting creates, and
4608 corruption that seems to come via the save stack.
4609 I guess that the save stack isn't correctly set up yet. */
4610 libpath = SvPVX(libdir);
4611 libpath_len = SvCUR(libdir);
4613 /* This would work more efficiently with memrchr, but as it's
4614 only a GNU extension we'd need to probe for it and
4615 implement our own. Not hard, but maybe not worth it? */
4617 prefix = SvPVX(prefix_sv);
4618 lastslash = strrchr(prefix, '/');
4620 /* First time in with the *lastslash = '\0' we just wipe off
4621 the trailing /perl from (say) /usr/foo/bin/perl
4625 while ((*lastslash = '\0'), /* Do that, come what may. */
4626 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4627 && (lastslash = strrchr(prefix, '/')))) {
4628 if (lastslash[1] == '\0'
4629 || (lastslash[1] == '.'
4630 && (lastslash[2] == '/' /* ends "/." */
4631 || (lastslash[2] == '/'
4632 && lastslash[3] == '/' /* or "/.." */
4634 /* Prefix ends "/" or "/." or "/..", any of which
4635 are fishy, so don't do any more logical cleanup.
4639 /* Remove leading "../" from path */
4642 /* Next iteration round the loop removes the last
4643 directory name from prefix by writing a '\0' in
4644 the while clause. */
4646 /* prefix has been terminated with a '\0' to the correct
4647 length. libpath points somewhere into the libdir SV.
4648 We need to join the 2 with '/' and drop the result into
4650 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4651 SvREFCNT_dec(libdir);
4652 /* And this is the new libdir. */
4655 (PerlProc_getuid() != PerlProc_geteuid() ||
4656 PerlProc_getgid() != PerlProc_getegid())) {
4657 /* Need to taint relocated paths if running set ID */
4658 SvTAINTED_on(libdir);
4661 SvREFCNT_dec(prefix_sv);
4669 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4672 #ifndef PERL_IS_MINIPERL
4673 const U8 using_sub_dirs
4674 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4675 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4676 const U8 add_versioned_sub_dirs
4677 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4678 const U8 add_archonly_sub_dirs
4679 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4680 #ifdef PERL_INC_VERSION_LIST
4681 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4684 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4685 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4686 AV *const inc = GvAVn(PL_incgv);
4688 PERL_ARGS_ASSERT_INCPUSH;
4691 /* Could remove this vestigial extra block, if we don't mind a lot of
4692 re-indenting diff noise. */
4694 SV *const libdir = mayberelocate(dir, len, flags);
4695 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4696 arranged to unshift #! line -I onto the front of @INC. However,
4697 -I can add version and architecture specific libraries, and they
4698 need to go first. The old code assumed that it was always
4699 pushing. Hence to make it work, need to push the architecture
4700 (etc) libraries onto a temporary array, then "unshift" that onto
4701 the front of @INC. */
4702 #ifndef PERL_IS_MINIPERL
4703 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4706 * BEFORE pushing libdir onto @INC we may first push version- and
4707 * archname-specific sub-directories.
4709 if (using_sub_dirs) {
4710 SV *subdir = newSVsv(libdir);
4711 #ifdef PERL_INC_VERSION_LIST
4712 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4713 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4714 const char * const *incver;
4717 if (add_versioned_sub_dirs) {
4718 /* .../version/archname if -d .../version/archname */
4719 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4720 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4722 /* .../version if -d .../version */
4723 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4724 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4727 #ifdef PERL_INC_VERSION_LIST
4729 for (incver = incverlist; *incver; incver++) {
4730 /* .../xxx if -d .../xxx */
4731 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4732 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4737 if (add_archonly_sub_dirs) {
4738 /* .../archname if -d .../archname */
4739 sv_catpvs(subdir, "/" ARCHNAME);
4740 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4744 assert (SvREFCNT(subdir) == 1);
4745 SvREFCNT_dec(subdir);
4747 #endif /* !PERL_IS_MINIPERL */
4748 /* finally add this lib directory at the end of @INC */
4750 #ifdef PERL_IS_MINIPERL
4751 const U32 extra = 0;
4753 U32 extra = av_len(av) + 1;
4755 av_unshift(inc, extra + push_basedir);
4757 av_store(inc, extra, libdir);
4758 #ifndef PERL_IS_MINIPERL
4760 /* av owns a reference, av_store() expects to be donated a
4761 reference, and av expects to be sane when it's cleared.
4762 If I wanted to be naughty and wrong, I could peek inside the
4763 implementation of av_clear(), realise that it uses
4764 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4765 and so directly steal from it (with a memcpy() to inc, and
4766 then memset() to NULL them out. But people copy code from the
4767 core expecting it to be best practise, so let's use the API.
4768 Although studious readers will note that I'm not checking any
4770 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4775 else if (push_basedir) {
4776 av_push(inc, libdir);
4779 if (!push_basedir) {
4780 assert (SvREFCNT(libdir) == 1);
4781 SvREFCNT_dec(libdir);
4787 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4791 /* This logic has been broken out from S_incpush(). It may be possible to
4794 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4796 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4797 * argument to incpush_use_sep. This allows creation of relocatable
4798 * Perl distributions that patch the binary at install time. Those
4799 * distributions will have to provide their own relocation tools; this
4800 * is not a feature otherwise supported by core Perl.
4802 #ifndef PERL_RELOCATABLE_INCPUSH
4809 /* Break at all separators */
4810 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4812 /* skip any consecutive separators */
4814 /* Uncomment the next line for PATH semantics */
4815 /* But you'll need to write tests */
4816 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4818 incpush(p, (STRLEN)(s - p), flags);
4823 incpush(p, (STRLEN)(end - p), flags);
4828 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4832 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4838 PERL_ARGS_ASSERT_CALL_LIST;
4840 while (av_len(paramList) >= 0) {
4841 cv = MUTABLE_CV(av_shift(paramList));
4843 if (paramList == PL_beginav) {
4844 /* save PL_beginav for compiler */
4845 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4847 else if (paramList == PL_checkav) {
4848 /* save PL_checkav for compiler */
4849 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4851 else if (paramList == PL_unitcheckav) {
4852 /* save PL_unitcheckav for compiler */
4853 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4864 PL_madskills |= 16384;
4869 PL_madskills &= ~16384;
4872 (void)SvPV_const(atsv, len);
4874 PL_curcop = &PL_compiling;
4875 CopLINE_set(PL_curcop, oldline);
4876 if (paramList == PL_beginav)
4877 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4879 Perl_sv_catpvf(aTHX_ atsv,
4880 "%s failed--call queue aborted",
4881 paramList == PL_checkav ? "CHECK"
4882 : paramList == PL_initav ? "INIT"
4883 : paramList == PL_unitcheckav ? "UNITCHECK"
4885 while (PL_scopestack_ix > oldscope)
4888 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4895 /* my_exit() was called */
4896 while (PL_scopestack_ix > oldscope)
4899 SET_CURSTASH(PL_defstash);
4900 PL_curcop = &PL_compiling;
4901 CopLINE_set(PL_curcop, oldline);
4904 assert(0); /* NOTREACHED */
4907 PL_curcop = &PL_compiling;
4908 CopLINE_set(PL_curcop, oldline);
4911 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4920 Perl_my_exit(pTHX_ U32 status)
4931 STATUS_EXIT_SET(status);
4938 Perl_my_failure_exit(pTHX)
4942 /* We have been called to fall on our sword. The desired exit code
4943 * should be already set in STATUS_UNIX, but could be shifted over
4944 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4947 * If an error code has not been set, then force the issue.
4949 if (MY_POSIX_EXIT) {
4951 /* According to the die_exit.t tests, if errno is non-zero */
4952 /* It should be used for the error status. */
4954 if (errno == EVMSERR) {
4955 STATUS_NATIVE = vaxc$errno;
4958 /* According to die_exit.t tests, if the child_exit code is */
4959 /* also zero, then we need to exit with a code of 255 */
4960 if ((errno != 0) && (errno < 256))
4961 STATUS_UNIX_EXIT_SET(errno);
4962 else if (STATUS_UNIX < 255) {
4963 STATUS_UNIX_EXIT_SET(255);
4968 /* The exit code could have been set by $? or vmsish which
4969 * means that it may not have fatal set. So convert
4970 * success/warning codes to fatal with out changing
4971 * the POSIX status code. The severity makes VMS native
4972 * status handling work, while UNIX mode programs use the
4973 * the POSIX exit codes.
4975 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4976 STATUS_NATIVE &= STS$M_COND_ID;
4977 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4981 /* Traditionally Perl on VMS always expects a Fatal Error. */
4982 if (vaxc$errno & 1) {
4984 /* So force success status to failure */
4985 if (STATUS_NATIVE & 1)
4990 STATUS_UNIX = EINTR; /* In case something cares */
4995 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4997 /* Encode the severity code */
4998 severity = STATUS_NATIVE & STS$M_SEVERITY;
4999 STATUS_UNIX = (severity ? severity : 1) << 8;
5001 /* Perl expects this to be a fatal error */
5002 if (severity != STS$K_SEVERE)
5011 STATUS_UNIX_SET(errno);
5013 exitstatus = STATUS_UNIX >> 8;
5014 if (exitstatus & 255)
5015 STATUS_UNIX_SET(exitstatus);
5017 STATUS_UNIX_SET(255);
5024 S_my_exit_jump(pTHX)
5029 SvREFCNT_dec(PL_e_script);
5033 POPSTACK_TO(PL_mainstack);
5041 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5044 const char * const p = SvPVX_const(PL_e_script);
5045 const char *nl = strchr(p, '\n');
5047 PERL_UNUSED_ARG(idx);
5048 PERL_UNUSED_ARG(maxlen);
5050 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5052 filter_del(read_e_script);
5055 sv_catpvn(buf_sv, p, nl-p);
5056 sv_chop(PL_e_script, nl);
5062 * c-indentation-style: bsd
5064 * indent-tabs-mode: nil
5067 * ex: set ts=8 sts=4 sw=4 et: