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 PERL_DISABLE_PMC
1692 # ifdef PERL_DONT_CREATE_GVSV
1693 " PERL_DONT_CREATE_GVSV"
1695 # ifdef PERL_EXTERNAL_GLOB
1696 " PERL_EXTERNAL_GLOB"
1698 # ifdef PERL_HASH_FUNC_SIPHASH
1699 " PERL_HASH_FUNC_SIPHASH"
1701 # ifdef PERL_HASH_FUNC_SDBM
1702 " PERL_HASH_FUNC_SDBM"
1704 # ifdef PERL_HASH_FUNC_DJB2
1705 " PERL_HASH_FUNC_DJB2"
1707 # ifdef PERL_HASH_FUNC_SUPERFAST
1708 " PERL_HASH_FUNC_SUPERFAST"
1710 # ifdef PERL_HASH_FUNC_MURMUR3
1711 " PERL_HASH_FUNC_MURMUR3"
1713 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1714 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1716 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1717 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1719 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1720 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1722 # ifdef PERL_IS_MINIPERL
1725 # ifdef PERL_MALLOC_WRAP
1728 # ifdef PERL_MEM_LOG
1731 # ifdef PERL_MEM_LOG_NOIMPL
1732 " PERL_MEM_LOG_NOIMPL"
1734 # ifdef PERL_NEW_COPY_ON_WRITE
1735 " PERL_NEW_COPY_ON_WRITE"
1737 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1738 " PERL_PERTURB_KEYS_DETERMINISTIC"
1740 # ifdef PERL_PERTURB_KEYS_DISABLED
1741 " PERL_PERTURB_KEYS_DISABLED"
1743 # ifdef PERL_PERTURB_KEYS_RANDOM
1744 " PERL_PERTURB_KEYS_RANDOM"
1746 # ifdef PERL_PRESERVE_IVUV
1747 " PERL_PRESERVE_IVUV"
1749 # ifdef PERL_RELOCATABLE_INCPUSH
1750 " PERL_RELOCATABLE_INCPUSH"
1752 # ifdef PERL_USE_DEVEL
1755 # ifdef PERL_USE_SAFE_PUTENV
1756 " PERL_USE_SAFE_PUTENV"
1758 # ifdef UNLINK_ALL_VERSIONS
1759 " UNLINK_ALL_VERSIONS"
1761 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1762 " USE_ATTRIBUTES_FOR_PERLIO"
1764 # ifdef USE_FAST_STDIO
1767 # ifdef USE_HASH_SEED_EXPLICIT
1768 " USE_HASH_SEED_EXPLICIT"
1773 # ifdef USE_LOCALE_CTYPE
1776 # ifdef USE_PERL_ATOF
1779 # ifdef USE_SITECUSTOMIZE
1780 " USE_SITECUSTOMIZE"
1783 PERL_UNUSED_ARG(cv);
1784 PERL_UNUSED_ARG(items);
1786 EXTEND(SP, entries);
1788 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1789 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1790 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1794 PUSHs(Perl_newSVpvn_flags(aTHX_
1795 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1798 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1802 PUSHs(&PL_sv_undef);
1805 for (i = 1; i <= local_patch_count; i++) {
1806 /* This will be an undef, if PL_localpatches[i] is NULL. */
1807 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1813 #define INCPUSH_UNSHIFT 0x01
1814 #define INCPUSH_ADD_OLD_VERS 0x02
1815 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1816 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1817 #define INCPUSH_NOT_BASEDIR 0x10
1818 #define INCPUSH_CAN_RELOCATE 0x20
1819 #define INCPUSH_ADD_SUB_DIRS \
1820 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1823 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1827 int argc = PL_origargc;
1828 char **argv = PL_origargv;
1829 const char *scriptname = NULL;
1830 VOL bool dosearch = FALSE;
1832 bool doextract = FALSE;
1833 const char *cddir = NULL;
1834 #ifdef USE_SITECUSTOMIZE
1835 bool minus_f = FALSE;
1837 SV *linestr_sv = NULL;
1838 bool add_read_e_script = FALSE;
1839 U32 lex_start_flags = 0;
1841 PERL_SET_PHASE(PERL_PHASE_START);
1847 for (argc--,argv++; argc > 0; argc--,argv++) {
1848 if (argv[0][0] != '-' || !argv[0][1])
1854 #ifndef PERL_STRICT_CR
1878 if ((s = moreswitches(s)))
1883 #if SILENT_NO_TAINT_SUPPORT
1884 /* silently ignore */
1885 #elif NO_TAINT_SUPPORT
1886 Perl_croak_nocontext("This perl was compiled without taint support. "
1887 "Cowardly refusing to run with -t or -T flags");
1889 CHECK_MALLOC_TOO_LATE_FOR('t');
1890 if( !TAINTING_get ) {
1891 TAINT_WARN_set(TRUE);
1898 #if SILENT_NO_TAINT_SUPPORT
1899 /* silently ignore */
1900 #elif NO_TAINT_SUPPORT
1901 Perl_croak_nocontext("This perl was compiled without taint support. "
1902 "Cowardly refusing to run with -t or -T flags");
1904 CHECK_MALLOC_TOO_LATE_FOR('T');
1906 TAINT_WARN_set(FALSE);
1915 forbid_setid('e', FALSE);
1917 PL_e_script = newSVpvs("");
1918 add_read_e_script = TRUE;
1921 sv_catpv(PL_e_script, s);
1923 sv_catpv(PL_e_script, argv[1]);
1927 Perl_croak(aTHX_ "No code specified for -%c", c);
1928 sv_catpvs(PL_e_script, "\n");
1932 #ifdef USE_SITECUSTOMIZE
1938 case 'I': /* -I handled both here and in moreswitches() */
1939 forbid_setid('I', FALSE);
1940 if (!*++s && (s=argv[1]) != NULL) {
1944 STRLEN len = strlen(s);
1945 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1948 Perl_croak(aTHX_ "No directory specified for -I");
1951 forbid_setid('S', FALSE);
1960 opts_prog = newSVpvs("use Config; Config::_V()");
1964 opts_prog = Perl_newSVpvf(aTHX_
1965 "use Config; Config::config_vars(qw%c%s%c)",
1969 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1970 /* don't look for script or read stdin */
1971 scriptname = BIT_BUCKET;
1983 if (!*++s || isSPACE(*s)) {
1987 /* catch use of gnu style long options.
1988 Both of these exit immediately. */
1989 if (strEQ(s, "version"))
1991 if (strEQ(s, "help"))
1996 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
2007 #ifndef SECURE_INTERNAL_GETENV
2010 (s = PerlEnv_getenv("PERL5OPT")))
2014 if (*s == '-' && *(s+1) == 'T') {
2015 #if SILENT_NO_TAINT_SUPPORT
2016 /* silently ignore */
2017 #elif NO_TAINT_SUPPORT
2018 Perl_croak_nocontext("This perl was compiled without taint support. "
2019 "Cowardly refusing to run with -t or -T flags");
2021 CHECK_MALLOC_TOO_LATE_FOR('T');
2023 TAINT_WARN_set(FALSE);
2027 char *popt_copy = NULL;
2040 if (!strchr("CDIMUdmtwW", *s))
2041 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2045 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2046 s = popt_copy + (s - d);
2054 #if SILENT_NO_TAINT_SUPPORT
2055 /* silently ignore */
2056 #elif NO_TAINT_SUPPORT
2057 Perl_croak_nocontext("This perl was compiled without taint support. "
2058 "Cowardly refusing to run with -t or -T flags");
2060 if( !TAINTING_get) {
2061 TAINT_WARN_set(TRUE);
2073 /* Set $^X early so that it can be used for relocatable paths in @INC */
2074 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2075 assert (!TAINT_get);
2077 S_set_caret_X(aTHX);
2080 #if defined(USE_SITECUSTOMIZE)
2082 /* The games with local $! are to avoid setting errno if there is no
2083 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2084 ie a q() operator with a NUL byte as a the delimiter. This avoids
2085 problems with pathnames containing (say) ' */
2086 # ifdef PERL_IS_MINIPERL
2087 AV *const inc = GvAV(PL_incgv);
2088 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2091 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2093 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2098 /* SITELIB_EXP is a function call on Win32. */
2099 const char *const raw_sitelib = SITELIB_EXP;
2101 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2102 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2103 INCPUSH_CAN_RELOCATE);
2104 const char *const sitelib = SvPVX(sitelib_sv);
2105 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2107 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2110 assert (SvREFCNT(sitelib_sv) == 1);
2111 SvREFCNT_dec(sitelib_sv);
2118 scriptname = argv[0];
2121 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2123 else if (scriptname == NULL) {
2125 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2131 assert (!TAINT_get);
2135 bool suidscript = FALSE;
2137 rsfp = open_script(scriptname, dosearch, &suidscript);
2139 rsfp = PerlIO_stdin();
2140 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2143 validate_suid(rsfp);
2146 # if defined(SIGCHLD) || defined(SIGCLD)
2149 # define SIGCHLD SIGCLD
2151 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2152 if (sigstate == (Sighandler_t) SIG_IGN) {
2153 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2154 "Can't ignore signal CHLD, forcing to default");
2155 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2163 /* This will croak if suidscript is true, as -x cannot be used with
2165 forbid_setid('x', suidscript);
2166 /* Hence you can't get here if suidscript is true */
2168 linestr_sv = newSV_type(SVt_PV);
2169 lex_start_flags |= LEX_START_COPIED;
2170 find_beginning(linestr_sv, rsfp);
2171 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2172 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2176 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2177 CvUNIQUE_on(PL_compcv);
2179 CvPADLIST(PL_compcv) = pad_new(0);
2181 PL_isarev = newHV();
2184 boot_core_UNIVERSAL();
2186 newXS("Internals::V", S_Internals_V, __FILE__);
2189 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2191 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2197 # ifdef HAS_SOCKS5_INIT
2198 socks5_init(argv[0]);
2204 init_predump_symbols();
2205 /* init_postdump_symbols not currently designed to be called */
2206 /* more than once (ENV isn't cleared first, for example) */
2207 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2209 init_postdump_symbols(argc,argv,env);
2211 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2212 * or explicitly in some platforms.
2213 * locale.c:Perl_init_i18nl10n() if the environment
2214 * look like the user wants to use UTF-8. */
2215 #if defined(__SYMBIAN32__)
2216 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2218 # ifndef PERL_IS_MINIPERL
2220 /* Requires init_predump_symbols(). */
2221 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2226 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2227 * and the default open disciplines. */
2228 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2229 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2231 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2232 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2233 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2235 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2236 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2237 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2239 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2240 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2241 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2243 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2244 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2247 sv_setpvs(sv, ":utf8\0:utf8");
2249 sv_setpvs(sv, ":utf8\0");
2252 sv_setpvs(sv, "\0:utf8");
2261 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2262 if (strEQ(s, "unsafe"))
2263 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2264 else if (strEQ(s, "safe"))
2265 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2267 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2274 if (!TAINTING_get &&
2275 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2279 PL_xmlfp = PerlIO_stdout();
2281 PL_xmlfp = PerlIO_open(s, "w");
2283 Perl_croak(aTHX_ "Can't open %s", s);
2285 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2291 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2292 PL_madskills = atoi(s);
2293 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2298 lex_start(linestr_sv, rsfp, lex_start_flags);
2299 SvREFCNT_dec(linestr_sv);
2301 PL_subname = newSVpvs("main");
2303 if (add_read_e_script)
2304 filter_add(read_e_script, NULL);
2306 /* now parse the script */
2308 SETERRNO(0,SS_NORMAL);
2309 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2311 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2313 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2317 CopLINE_set(PL_curcop, 0);
2318 SET_CURSTASH(PL_defstash);
2320 SvREFCNT_dec(PL_e_script);
2328 SAVECOPFILE(PL_curcop);
2329 SAVECOPLINE(PL_curcop);
2330 gv_check(PL_defstash);
2339 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2340 dump_mstats("after compilation:");
2345 PL_restartjmpenv = NULL;
2351 =for apidoc perl_run
2353 Tells a Perl interpreter to run. See L<perlembed>.
2366 PERL_ARGS_ASSERT_PERL_RUN;
2367 #ifndef MULTIPLICITY
2368 PERL_UNUSED_ARG(my_perl);
2371 oldscope = PL_scopestack_ix;
2379 cxstack_ix = -1; /* start context stack again */
2381 case 0: /* normal completion */
2385 case 2: /* my_exit() */
2386 while (PL_scopestack_ix > oldscope)
2389 SET_CURSTASH(PL_defstash);
2390 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2391 PL_endav && !PL_minus_c) {
2392 PERL_SET_PHASE(PERL_PHASE_END);
2393 call_list(oldscope, PL_endav);
2396 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2397 dump_mstats("after execution: ");
2403 POPSTACK_TO(PL_mainstack);
2406 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2417 S_run_body(pTHX_ I32 oldscope)
2420 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2421 PL_sawampersand ? "Enabling" : "Omitting",
2422 (unsigned int)(PL_sawampersand)));
2424 if (!PL_restartop) {
2428 exit(0); /* less likely to core dump than my_exit(0) */
2432 if (DEBUG_x_TEST || DEBUG_B_TEST)
2433 dump_all_perl(!DEBUG_B_TEST);
2435 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2439 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2442 if (PERLDB_SINGLE && PL_DBsingle)
2443 sv_setiv(PL_DBsingle, 1);
2445 PERL_SET_PHASE(PERL_PHASE_INIT);
2446 call_list(oldscope, PL_initav);
2448 #ifdef PERL_DEBUG_READONLY_OPS
2449 if (PL_main_root && PL_main_root->op_slabbed)
2450 Slab_to_ro(OpSLAB(PL_main_root));
2456 PERL_SET_PHASE(PERL_PHASE_RUN);
2459 PL_restartjmpenv = NULL;
2460 PL_op = PL_restartop;
2464 else if (PL_main_start) {
2465 CvDEPTH(PL_main_cv) = 1;
2466 PL_op = PL_main_start;
2470 assert(0); /* NOTREACHED */
2474 =head1 SV Manipulation Functions
2476 =for apidoc p||get_sv
2478 Returns the SV of the specified Perl scalar. C<flags> are passed to
2479 C<gv_fetchpv>. If C<GV_ADD> is set and the
2480 Perl variable does not exist then it will be created. If C<flags> is zero
2481 and the variable does not exist then NULL is returned.
2487 Perl_get_sv(pTHX_ const char *name, I32 flags)
2491 PERL_ARGS_ASSERT_GET_SV;
2493 gv = gv_fetchpv(name, flags, SVt_PV);
2500 =head1 Array Manipulation Functions
2502 =for apidoc p||get_av
2504 Returns the AV of the specified Perl global or package array with the given
2505 name (so it won't work on lexical variables). C<flags> are passed
2506 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2507 Perl variable does not exist then it will be created. If C<flags> is zero
2508 and the variable does not exist then NULL is returned.
2510 Perl equivalent: C<@{"$name"}>.
2516 Perl_get_av(pTHX_ const char *name, I32 flags)
2518 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2520 PERL_ARGS_ASSERT_GET_AV;
2530 =head1 Hash Manipulation Functions
2532 =for apidoc p||get_hv
2534 Returns the HV of the specified Perl hash. C<flags> are passed to
2535 C<gv_fetchpv>. If C<GV_ADD> is set and the
2536 Perl variable does not exist then it will be created. If C<flags> is zero
2537 and the variable does not exist then NULL is returned.
2543 Perl_get_hv(pTHX_ const char *name, I32 flags)
2545 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2547 PERL_ARGS_ASSERT_GET_HV;
2557 =head1 CV Manipulation Functions
2559 =for apidoc p||get_cvn_flags
2561 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2562 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2563 exist then it will be declared (which has the same effect as saying
2564 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2565 then NULL is returned.
2567 =for apidoc p||get_cv
2569 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2575 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2577 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2579 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2581 /* XXX this is probably not what they think they're getting.
2582 * It has the same effect as "sub name;", i.e. just a forward
2584 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2585 return newSTUB(gv,0);
2592 /* Nothing in core calls this now, but we can't replace it with a macro and
2593 move it to mathoms.c as a macro would evaluate name twice. */
2595 Perl_get_cv(pTHX_ const char *name, I32 flags)
2597 PERL_ARGS_ASSERT_GET_CV;
2599 return get_cvn_flags(name, strlen(name), flags);
2602 /* Be sure to refetch the stack pointer after calling these routines. */
2606 =head1 Callback Functions
2608 =for apidoc p||call_argv
2610 Performs a callback to the specified named and package-scoped Perl subroutine
2611 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2613 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2619 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2621 /* See G_* flags in cop.h */
2622 /* null terminated arg list */
2627 PERL_ARGS_ASSERT_CALL_ARGV;
2632 mXPUSHs(newSVpv(*argv,0));
2637 return call_pv(sub_name, flags);
2641 =for apidoc p||call_pv
2643 Performs a callback to the specified Perl sub. See L<perlcall>.
2649 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2650 /* name of the subroutine */
2651 /* See G_* flags in cop.h */
2653 PERL_ARGS_ASSERT_CALL_PV;
2655 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2659 =for apidoc p||call_method
2661 Performs a callback to the specified Perl method. The blessed object must
2662 be on the stack. See L<perlcall>.
2668 Perl_call_method(pTHX_ const char *methname, I32 flags)
2669 /* name of the subroutine */
2670 /* See G_* flags in cop.h */
2673 PERL_ARGS_ASSERT_CALL_METHOD;
2675 len = strlen(methname);
2677 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2678 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2681 /* May be called with any of a CV, a GV, or an SV containing the name. */
2683 =for apidoc p||call_sv
2685 Performs a callback to the Perl sub whose name is in the SV. See
2692 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2693 /* See G_* flags in cop.h */
2696 LOGOP myop; /* fake syntax tree node */
2701 bool oldcatch = CATCH_GET;
2703 OP* const oldop = PL_op;
2706 PERL_ARGS_ASSERT_CALL_SV;
2708 if (flags & G_DISCARD) {
2712 if (!(flags & G_WANT)) {
2713 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2718 Zero(&myop, 1, LOGOP);
2719 if (!(flags & G_NOARGS))
2720 myop.op_flags |= OPf_STACKED;
2721 myop.op_flags |= OP_GIMME_REVERSE(flags);
2725 EXTEND(PL_stack_sp, 1);
2726 *++PL_stack_sp = sv;
2728 oldscope = PL_scopestack_ix;
2730 if (PERLDB_SUB && PL_curstash != PL_debstash
2731 /* Handle first BEGIN of -d. */
2732 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2733 /* Try harder, since this may have been a sighandler, thus
2734 * curstash may be meaningless. */
2735 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2736 && !(flags & G_NODEBUG))
2737 myop.op_private |= OPpENTERSUB_DB;
2739 if (flags & G_METHOD) {
2740 Zero(&method_op, 1, UNOP);
2741 method_op.op_next = (OP*)&myop;
2742 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2743 method_op.op_type = OP_METHOD;
2744 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2745 myop.op_type = OP_ENTERSUB;
2746 PL_op = (OP*)&method_op;
2749 if (!(flags & G_EVAL)) {
2751 CALL_BODY_SUB((OP*)&myop);
2752 retval = PL_stack_sp - (PL_stack_base + oldmark);
2753 CATCH_SET(oldcatch);
2756 myop.op_other = (OP*)&myop;
2758 create_eval_scope(flags|G_FAKINGEVAL);
2766 CALL_BODY_SUB((OP*)&myop);
2767 retval = PL_stack_sp - (PL_stack_base + oldmark);
2768 if (!(flags & G_KEEPERR)) {
2776 /* my_exit() was called */
2777 SET_CURSTASH(PL_defstash);
2781 assert(0); /* NOTREACHED */
2784 PL_restartjmpenv = NULL;
2785 PL_op = PL_restartop;
2789 PL_stack_sp = PL_stack_base + oldmark;
2790 if ((flags & G_WANT) == G_ARRAY)
2794 *++PL_stack_sp = &PL_sv_undef;
2799 if (PL_scopestack_ix > oldscope)
2800 delete_eval_scope();
2804 if (flags & G_DISCARD) {
2805 PL_stack_sp = PL_stack_base + oldmark;
2814 /* Eval a string. The G_EVAL flag is always assumed. */
2817 =for apidoc p||eval_sv
2819 Tells Perl to C<eval> the string in the SV. It supports the same flags
2820 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2826 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2828 /* See G_* flags in cop.h */
2832 UNOP myop; /* fake syntax tree node */
2833 VOL I32 oldmark = SP - PL_stack_base;
2836 OP* const oldop = PL_op;
2839 PERL_ARGS_ASSERT_EVAL_SV;
2841 if (flags & G_DISCARD) {
2848 Zero(&myop, 1, UNOP);
2849 EXTEND(PL_stack_sp, 1);
2850 *++PL_stack_sp = sv;
2852 if (!(flags & G_NOARGS))
2853 myop.op_flags = OPf_STACKED;
2854 myop.op_type = OP_ENTEREVAL;
2855 myop.op_flags |= OP_GIMME_REVERSE(flags);
2856 if (flags & G_KEEPERR)
2857 myop.op_flags |= OPf_SPECIAL;
2859 if (flags & G_RE_REPARSING)
2860 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2862 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2863 * before a PUSHEVAL, which corrupts the stack after a croak */
2864 TAINT_PROPER("eval_sv()");
2870 if (PL_op == (OP*)(&myop)) {
2871 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2873 goto fail; /* failed in compilation */
2876 retval = PL_stack_sp - (PL_stack_base + oldmark);
2877 if (!(flags & G_KEEPERR)) {
2885 /* my_exit() was called */
2886 SET_CURSTASH(PL_defstash);
2890 assert(0); /* NOTREACHED */
2893 PL_restartjmpenv = NULL;
2894 PL_op = PL_restartop;
2899 PL_stack_sp = PL_stack_base + oldmark;
2900 if ((flags & G_WANT) == G_ARRAY)
2904 *++PL_stack_sp = &PL_sv_undef;
2910 if (flags & G_DISCARD) {
2911 PL_stack_sp = PL_stack_base + oldmark;
2921 =for apidoc p||eval_pv
2923 Tells Perl to C<eval> the given string and return an SV* result.
2929 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2932 SV* sv = newSVpv(p, 0);
2934 PERL_ARGS_ASSERT_EVAL_PV;
2936 eval_sv(sv, G_SCALAR);
2945 /* just check empty string or undef? */
2946 if (croak_on_error) {
2947 SV * const errsv = ERRSV;
2948 if(SvTRUE_NN(errsv))
2949 /* replace with croak_sv? */
2950 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2956 /* Require a module. */
2959 =head1 Embedding Functions
2961 =for apidoc p||require_pv
2963 Tells Perl to C<require> the file named by the string argument. It is
2964 analogous to the Perl code C<eval "require '$file'">. It's even
2965 implemented that way; consider using load_module instead.
2970 Perl_require_pv(pTHX_ const char *pv)
2976 PERL_ARGS_ASSERT_REQUIRE_PV;
2978 PUSHSTACKi(PERLSI_REQUIRE);
2980 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2981 eval_sv(sv_2mortal(sv), G_DISCARD);
2987 S_usage(pTHX) /* XXX move this out into a module ? */
2989 /* This message really ought to be max 23 lines.
2990 * Removed -h because the user already knows that option. Others? */
2992 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2993 minimum of 509 character string literals. */
2994 static const char * const usage_msg[] = {
2995 " -0[octal] specify record separator (\\0, if no argument)\n"
2996 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2997 " -C[number/list] enables the listed Unicode features\n"
2998 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2999 " -d[:debugger] run program under debugger\n"
3000 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3001 " -e program one line of program (several -e's allowed, omit programfile)\n"
3002 " -E program like -e, but enables all optional features\n"
3003 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3004 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3005 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3006 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3007 " -l[octal] enable line ending processing, specifies line terminator\n"
3008 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3009 " -n assume \"while (<>) { ... }\" loop around program\n"
3010 " -p assume loop like -n but print line also, like sed\n"
3011 " -s enable rudimentary parsing for switches after programfile\n"
3012 " -S look for programfile using PATH environment variable\n",
3013 " -t enable tainting warnings\n"
3014 " -T enable tainting checks\n"
3015 " -u dump core after parsing program\n"
3016 " -U allow unsafe operations\n"
3017 " -v print version, patchlevel and license\n"
3018 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3019 " -w enable many useful warnings\n"
3020 " -W enable all warnings\n"
3021 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3022 " -X disable all warnings\n"
3024 "Run 'perldoc perl' for more help with Perl.\n\n",
3027 const char * const *p = usage_msg;
3028 PerlIO *out = PerlIO_stdout();
3031 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3034 PerlIO_puts(out, *p++);
3038 /* convert a string of -D options (or digits) into an int.
3039 * sets *s to point to the char after the options */
3043 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3045 static const char * const usage_msgd[] = {
3046 " Debugging flag values: (see also -d)\n"
3047 " p Tokenizing and parsing (with v, displays parse stack)\n"
3048 " s Stack snapshots (with v, displays all stacks)\n"
3049 " l Context (loop) stack processing\n"
3050 " t Trace execution\n"
3051 " o Method and overloading resolution\n",
3052 " c String/numeric conversions\n"
3053 " P Print profiling info, source file input state\n"
3054 " m Memory and SV allocation\n"
3055 " f Format processing\n"
3056 " r Regular expression parsing and execution\n"
3057 " x Syntax tree dump\n",
3058 " u Tainting checks\n"
3059 " H Hash dump -- usurps values()\n"
3060 " X Scratchpad allocation\n"
3062 " S Op slab allocation\n"
3064 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3065 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3066 " v Verbose: use in conjunction with other flags\n"
3067 " C Copy On Write\n"
3068 " A Consistency checks on internal structures\n"
3069 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3070 " M trace smart match resolution\n"
3071 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3076 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3079 /* if adding extra options, remember to update DEBUG_MASK */
3080 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
3082 for (; isWORDCHAR(**s); (*s)++) {
3083 const char * const d = strchr(debopts,**s);
3085 i |= 1 << (d - debopts);
3086 else if (ckWARN_d(WARN_DEBUGGING))
3087 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3088 "invalid option -D%c, use -D'' to see choices\n", **s);
3091 else if (isDIGIT(**s)) {
3093 for (; isWORDCHAR(**s); (*s)++) ;
3095 else if (givehelp) {
3096 const char *const *p = usage_msgd;
3097 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3100 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3101 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3102 "-Dp not implemented on this platform\n");
3108 /* This routine handles any switches that can be given during run */
3111 Perl_moreswitches(pTHX_ const char *s)
3115 const char option = *s; /* used to remember option in -m/-M code */
3117 PERL_ARGS_ASSERT_MORESWITCHES;
3125 SvREFCNT_dec(PL_rs);
3126 if (s[1] == 'x' && s[2]) {
3127 const char *e = s+=2;
3133 flags = PERL_SCAN_SILENT_ILLDIGIT;
3134 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3135 if (s + numlen < e) {
3136 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3140 PL_rs = newSVpvs("");
3141 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3142 tmps = (U8*)SvPVX(PL_rs);
3143 uvchr_to_utf8(tmps, rschar);
3144 SvCUR_set(PL_rs, UNISKIP(rschar));
3149 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3150 if (rschar & ~((U8)~0))
3151 PL_rs = &PL_sv_undef;
3152 else if (!rschar && numlen >= 2)
3153 PL_rs = newSVpvs("");
3155 char ch = (char)rschar;
3156 PL_rs = newSVpvn(&ch, 1);
3159 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3164 PL_unicode = parse_unicode_opts( (const char **)&s );
3165 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3171 while (*s && !isSPACE(*s)) ++s;
3172 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3183 forbid_setid('d', FALSE);
3186 /* -dt indicates to the debugger that threads will be used */
3187 if (*s == 't' && !isWORDCHAR(s[1])) {
3189 my_setenv("PERL5DB_THREADED", "1");
3192 /* The following permits -d:Mod to accepts arguments following an =
3193 in the fashion that -MSome::Mod does. */
3194 if (*s == ':' || *s == '=') {
3201 sv = newSVpvs("no Devel::");
3203 sv = newSVpvs("use Devel::");
3207 end = s + strlen(s);
3209 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3210 while(isWORDCHAR(*s) || *s==':') ++s;
3212 sv_catpvn(sv, start, end - start);
3214 sv_catpvn(sv, start, s-start);
3215 /* Don't use NUL as q// delimiter here, this string goes in the
3217 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3220 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3224 PL_perldb = PERLDB_ALL;
3231 forbid_setid('D', FALSE);
3233 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3234 #else /* !DEBUGGING */
3235 if (ckWARN_d(WARN_DEBUGGING))
3236 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3237 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3238 for (s++; isWORDCHAR(*s); s++) ;
3245 Safefree(PL_inplace);
3246 #if defined(__CYGWIN__) /* do backup extension automagically */
3247 if (*(s+1) == '\0') {
3248 PL_inplace = savepvs(".bak");
3251 #endif /* __CYGWIN__ */
3253 const char * const start = ++s;
3254 while (*s && !isSPACE(*s))
3257 PL_inplace = savepvn(start, s - start);
3261 if (*s == '-') /* Additional switches on #! line. */
3265 case 'I': /* -I handled both here and in parse_body() */
3266 forbid_setid('I', FALSE);
3268 while (*s && isSPACE(*s))
3273 /* ignore trailing spaces (possibly followed by other switches) */
3275 for (e = p; *e && !isSPACE(*e); e++) ;
3279 } while (*p && *p != '-');
3281 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3287 Perl_croak(aTHX_ "No directory specified for -I");
3293 SvREFCNT_dec(PL_ors_sv);
3299 PL_ors_sv = newSVpvs("\n");
3300 numlen = 3 + (*s == '0');
3301 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3305 if (RsPARA(PL_rs)) {
3306 PL_ors_sv = newSVpvs("\n\n");
3309 PL_ors_sv = newSVsv(PL_rs);
3314 forbid_setid('M', FALSE); /* XXX ? */
3317 forbid_setid('m', FALSE); /* XXX ? */
3322 const char *use = "use ";
3324 /* -M-foo == 'no foo' */
3325 /* Leading space on " no " is deliberate, to make both
3326 possibilities the same length. */
3327 if (*s == '-') { use = " no "; ++s; }
3328 sv = newSVpvn(use,4);
3330 /* We allow -M'Module qw(Foo Bar)' */
3331 while(isWORDCHAR(*s) || *s==':') {
3340 Perl_croak(aTHX_ "Module name required with -%c option",
3343 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3344 "contains single ':'",
3345 (int)(s - start), start, option);
3346 end = s + strlen(s);
3348 sv_catpvn(sv, start, end - start);
3349 if (option == 'm') {
3351 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3352 sv_catpvs( sv, " ()");
3355 sv_catpvn(sv, start, s-start);
3356 /* Use NUL as q''-delimiter. */
3357 sv_catpvs(sv, " split(/,/,q\0");
3359 sv_catpvn(sv, s, end - s);
3360 sv_catpvs(sv, "\0)");
3363 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3366 Perl_croak(aTHX_ "Missing argument to -%c", option);
3377 forbid_setid('s', FALSE);
3378 PL_doswitches = TRUE;
3383 #if SILENT_NO_TAINT_SUPPORT
3384 /* silently ignore */
3385 #elif NO_TAINT_SUPPORT
3386 Perl_croak_nocontext("This perl was compiled without taint support. "
3387 "Cowardly refusing to run with -t or -T flags");
3395 PL_do_undump = TRUE;
3405 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3406 PL_dowarn |= G_WARN_ON;
3411 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3412 if (!specialWARN(PL_compiling.cop_warnings))
3413 PerlMemShared_free(PL_compiling.cop_warnings);
3414 PL_compiling.cop_warnings = pWARN_ALL ;
3418 PL_dowarn = G_WARN_ALL_OFF;
3419 if (!specialWARN(PL_compiling.cop_warnings))
3420 PerlMemShared_free(PL_compiling.cop_warnings);
3421 PL_compiling.cop_warnings = pWARN_NONE ;
3428 if (s[0] == '-') /* Additional switches on #! line. */
3433 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3439 #ifdef ALTERNATE_SHEBANG
3440 case 'S': /* OS/2 needs -S on "extproc" line. */
3443 case 'e': case 'f': case 'x': case 'E':
3444 #ifndef ALTERNATE_SHEBANG
3448 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3451 "Unrecognized switch: -%.1s (-h will show valid options)",s
3461 PerlIO * PIO_stdout;
3462 if (!sv_derived_from(PL_patchlevel, "version"))
3463 upg_version(PL_patchlevel, TRUE);
3466 SV* level= vstringify(PL_patchlevel);
3467 #ifdef PERL_PATCHNUM
3468 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3469 SV *num = newSVpvs(PERL_PATCHNUM "*");
3471 SV *num = newSVpvs(PERL_PATCHNUM);
3474 STRLEN level_len, num_len;
3475 char * level_str, * num_str;
3476 num_str = SvPV(num, num_len);
3477 level_str = SvPV(level, level_len);
3478 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3479 SvREFCNT_dec(level);
3482 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3487 PIO_stdout = PerlIO_stdout();
3488 PerlIO_printf(PIO_stdout,
3489 "\nThis is perl " STRINGIFY(PERL_REVISION)
3490 ", version " STRINGIFY(PERL_VERSION)
3491 ", subversion " STRINGIFY(PERL_SUBVERSION)
3492 " (%"SVf") built for " ARCHNAME, level
3494 SvREFCNT_dec(level);
3497 PIO_stdout = PerlIO_stdout();
3498 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3499 PerlIO_printf(PIO_stdout,
3500 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3501 SVfARG(vstringify(PL_patchlevel))));
3502 PerlIO_printf(PIO_stdout,
3503 Perl_form(aTHX_ " built under %s at %s %s\n",
3504 OSNAME, __DATE__, __TIME__));
3505 PerlIO_printf(PIO_stdout,
3506 Perl_form(aTHX_ " OS Specific Release: %s\n",
3509 #if defined(LOCAL_PATCH_COUNT)
3510 if (LOCAL_PATCH_COUNT > 0)
3511 PerlIO_printf(PIO_stdout,
3512 "\n(with %d registered patch%s, "
3513 "see perl -V for more detail)",
3515 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3518 PerlIO_printf(PIO_stdout,
3519 "\n\nCopyright 1987-2013, Larry Wall\n");
3521 PerlIO_printf(PIO_stdout,
3522 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3525 PerlIO_printf(PIO_stdout,
3526 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3527 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3530 PerlIO_printf(PIO_stdout,
3531 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3532 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3535 PerlIO_printf(PIO_stdout,
3536 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3539 PerlIO_printf(PIO_stdout,
3540 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3543 PerlIO_printf(PIO_stdout,
3544 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3547 PerlIO_printf(PIO_stdout,
3548 "WINCE port by Rainer Keuchel, 2001-2002\n"
3549 "Built on " __DATE__ " " __TIME__ "\n\n");
3552 #ifdef __SYMBIAN32__
3553 PerlIO_printf(PIO_stdout,
3554 "Symbian port by Nokia, 2004-2005\n");
3556 #ifdef BINARY_BUILD_NOTICE
3557 BINARY_BUILD_NOTICE;
3559 PerlIO_printf(PIO_stdout,
3561 Perl may be copied only under the terms of either the Artistic License or the\n\
3562 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3563 Complete documentation for Perl, including FAQ lists, should be found on\n\
3564 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3565 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3569 /* compliments of Tom Christiansen */
3571 /* unexec() can be found in the Gnu emacs distribution */
3572 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3575 #include <lib$routines.h>
3579 Perl_my_unexec(pTHX)
3581 PERL_UNUSED_CONTEXT;
3583 SV * prog = newSVpv(BIN_EXP, 0);
3584 SV * file = newSVpv(PL_origfilename, 0);
3588 sv_catpvs(prog, "/perl");
3589 sv_catpvs(file, ".perldump");
3591 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3592 /* unexec prints msg to stderr in case of failure */
3593 PerlProc_exit(status);
3596 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3597 # elif defined(WIN32) || defined(__CYGWIN__)
3598 Perl_croak(aTHX_ "dump is not supported");
3600 ABORT(); /* for use with undump */
3605 /* initialize curinterp */
3611 # define PERLVAR(prefix,var,type)
3612 # define PERLVARA(prefix,var,n,type)
3613 # if defined(PERL_IMPLICIT_CONTEXT)
3614 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3615 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3617 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3618 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3620 # include "intrpvar.h"
3626 # define PERLVAR(prefix,var,type)
3627 # define PERLVARA(prefix,var,n,type)
3628 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3629 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3630 # include "intrpvar.h"
3637 /* As these are inside a structure, PERLVARI isn't capable of initialising
3639 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3640 PL_reg_poscache = PL_reg_starttry = NULL;
3644 S_init_main_stash(pTHX)
3649 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3650 /* We know that the string "main" will be in the global shared string
3651 table, so it's a small saving to use it rather than allocate another
3653 PL_curstname = newSVpvs_share("main");
3654 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3655 /* If we hadn't caused another reference to "main" to be in the shared
3656 string table above, then it would be worth reordering these two,
3657 because otherwise all we do is delete "main" from it as a consequence
3658 of the SvREFCNT_dec, only to add it again with hv_name_set */
3659 SvREFCNT_dec(GvHV(gv));
3660 hv_name_set(PL_defstash, "main", 4, 0);
3661 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3663 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3665 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3666 GvMULTI_on(PL_incgv);
3667 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3668 GvMULTI_on(PL_hintgv);
3669 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3670 SvREFCNT_inc_simple_void(PL_defgv);
3671 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3672 SvREFCNT_inc_simple_void(PL_errgv);
3673 GvMULTI_on(PL_errgv);
3674 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3675 GvMULTI_on(PL_replgv);
3676 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3677 #ifdef PERL_DONT_CREATE_GVSV
3680 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3682 SET_CURSTASH(PL_defstash);
3683 CopSTASH_set(&PL_compiling, PL_defstash);
3684 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3685 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3687 /* We must init $/ before switches are processed. */
3688 sv_setpvs(get_sv("/", GV_ADD), "\n");
3692 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3695 PerlIO *rsfp = NULL;
3699 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3702 PL_origfilename = savepvs("-e");
3705 /* if find_script() returns, it returns a malloc()-ed value */
3706 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3708 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3709 const char *s = scriptname + 8;
3715 * Tell apart "normal" usage of fdscript, e.g.
3716 * with bash on FreeBSD:
3717 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3718 * from usage in suidperl.
3719 * Does any "normal" usage leave garbage after the number???
3720 * Is it a mistake to use a similar /dev/fd/ construct for
3725 * Be supersafe and do some sanity-checks.
3726 * Still, can we be sure we got the right thing?
3729 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3732 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3734 scriptname = savepv(s + 1);
3735 Safefree(PL_origfilename);
3736 PL_origfilename = (char *)scriptname;
3741 CopFILE_free(PL_curcop);
3742 CopFILE_set(PL_curcop, PL_origfilename);
3743 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3744 scriptname = (char *)"";
3745 if (fdscript >= 0) {
3746 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3748 else if (!*scriptname) {
3749 forbid_setid(0, *suidscript);
3753 #ifdef FAKE_BIT_BUCKET
3754 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3755 * is called) and still have the "-e" work. (Believe it or not,
3756 * a /dev/null is required for the "-e" to work because source
3757 * filter magic is used to implement it. ) This is *not* a general
3758 * replacement for a /dev/null. What we do here is create a temp
3759 * file (an empty file), open up that as the script, and then
3760 * immediately close and unlink it. Close enough for jazz. */
3761 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3762 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3763 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3764 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3765 FAKE_BIT_BUCKET_TEMPLATE
3767 const char * const err = "Failed to create a fake bit bucket";
3768 if (strEQ(scriptname, BIT_BUCKET)) {
3769 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3770 int tmpfd = mkstemp(tmpname);
3772 scriptname = tmpname;
3775 Perl_croak(aTHX_ err);
3778 scriptname = mktemp(tmpname);
3780 Perl_croak(aTHX_ err);
3785 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3786 #ifdef FAKE_BIT_BUCKET
3787 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3788 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3789 && strlen(scriptname) == sizeof(tmpname) - 1) {
3792 scriptname = BIT_BUCKET;
3796 /* PSz 16 Sep 03 Keep neat error message */
3798 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3800 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3801 CopFILE(PL_curcop), Strerror(errno));
3803 #if defined(HAS_FCNTL) && defined(F_SETFD)
3804 /* ensure close-on-exec */
3805 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3808 if (PerlLIO_fstat(PerlIO_fileno(rsfp), &tmpstatbuf) >= 0
3809 && S_ISDIR(tmpstatbuf.st_mode))
3810 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3818 * I_SYSSTATVFS HAS_FSTATVFS
3820 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3821 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3822 * here so that metaconfig picks them up. */
3825 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3826 /* Don't even need this function. */
3829 S_validate_suid(pTHX_ PerlIO *rsfp)
3831 const UV my_uid = PerlProc_getuid();
3832 const UV my_euid = PerlProc_geteuid();
3833 const UV my_gid = PerlProc_getgid();
3834 const UV my_egid = PerlProc_getegid();
3836 PERL_ARGS_ASSERT_VALIDATE_SUID;
3838 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3841 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3842 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3844 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3847 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3848 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3849 /* not set-id, must be wrapped */
3852 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3855 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3861 PERL_ARGS_ASSERT_FIND_BEGINNING;
3863 /* skip forward in input to the real script? */
3866 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3867 Perl_croak(aTHX_ "No Perl script found in input\n");
3869 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3870 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3871 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3873 while (*s == ' ' || *s == '\t') s++;
3875 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3876 || s2[-1] == '_') s2--;
3877 if (strnEQ(s2-4,"perl",4))
3878 while ((s = moreswitches(s)))
3887 /* no need to do anything here any more if we don't
3889 #if !NO_TAINT_SUPPORT
3891 const UV my_uid = PerlProc_getuid();
3892 const UV my_euid = PerlProc_geteuid();
3893 const UV my_gid = PerlProc_getgid();
3894 const UV my_egid = PerlProc_getegid();
3896 /* Should not happen: */
3897 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3898 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3902 * Should go by suidscript, not uid!=euid: why disallow
3903 * system("ls") in scripts run from setuid things?
3904 * Or, is this run before we check arguments and set suidscript?
3905 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3906 * (We never have suidscript, can we be sure to have fdscript?)
3907 * Or must then go by UID checks? See comments in forbid_setid also.
3911 /* This is used very early in the lifetime of the program,
3912 * before even the options are parsed, so PL_tainting has
3913 * not been initialized properly. */
3915 Perl_doing_taint(int argc, char *argv[], char *envp[])
3917 #ifndef PERL_IMPLICIT_SYS
3918 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3919 * before we have an interpreter-- and the whole point of this
3920 * function is to be called at such an early stage. If you are on
3921 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3922 * "tainted because running with altered effective ids', you'll
3923 * have to add your own checks somewhere in here. The two most
3924 * known samples of 'implicitness' are Win32 and NetWare, neither
3925 * of which has much of concept of 'uids'. */
3926 int uid = PerlProc_getuid();
3927 int euid = PerlProc_geteuid();
3928 int gid = PerlProc_getgid();
3929 int egid = PerlProc_getegid();
3936 if (uid && (euid != uid || egid != gid))
3938 #endif /* !PERL_IMPLICIT_SYS */
3939 /* This is a really primitive check; environment gets ignored only
3940 * if -T are the first chars together; otherwise one gets
3941 * "Too late" message. */
3942 if ( argc > 1 && argv[1][0] == '-'
3943 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3948 /* Passing the flag as a single char rather than a string is a slight space
3949 optimisation. The only message that isn't /^-.$/ is
3950 "program input from stdin", which is substituted in place of '\0', which
3951 could never be a command line flag. */
3953 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3956 char string[3] = "-x";
3957 const char *message = "program input from stdin";
3964 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3965 if (PerlProc_getuid() != PerlProc_geteuid())
3966 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3967 if (PerlProc_getgid() != PerlProc_getegid())
3968 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3969 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3971 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3975 Perl_init_dbargs(pTHX)
3977 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3982 /* Someone has already created it.
3983 It might have entries, and if we just turn off AvREAL(), they will
3984 "leak" until global destruction. */
3986 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3987 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3989 AvREIFY_only(PL_dbargs);
3993 Perl_init_debugger(pTHX)
3996 HV * const ostash = PL_curstash;
3998 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
4000 Perl_init_dbargs(aTHX);
4001 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
4002 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
4003 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
4004 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4005 if (!SvIOK(PL_DBsingle))
4006 sv_setiv(PL_DBsingle, 0);
4007 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4008 if (!SvIOK(PL_DBtrace))
4009 sv_setiv(PL_DBtrace, 0);
4010 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4011 if (!SvIOK(PL_DBsignal))
4012 sv_setiv(PL_DBsignal, 0);
4013 SvREFCNT_dec(PL_curstash);
4014 PL_curstash = ostash;
4017 #ifndef STRESS_REALLOC
4018 #define REASONABLE(size) (size)
4020 #define REASONABLE(size) (1) /* unreasonable */
4024 Perl_init_stacks(pTHX)
4027 /* start with 128-item stack and 8K cxstack */
4028 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4029 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4030 PL_curstackinfo->si_type = PERLSI_MAIN;
4031 PL_curstack = PL_curstackinfo->si_stack;
4032 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4034 PL_stack_base = AvARRAY(PL_curstack);
4035 PL_stack_sp = PL_stack_base;
4036 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4038 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4041 PL_tmps_max = REASONABLE(128);
4043 Newx(PL_markstack,REASONABLE(32),I32);
4044 PL_markstack_ptr = PL_markstack;
4045 PL_markstack_max = PL_markstack + REASONABLE(32);
4049 Newx(PL_scopestack,REASONABLE(32),I32);
4051 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4053 PL_scopestack_ix = 0;
4054 PL_scopestack_max = REASONABLE(32);
4056 Newx(PL_savestack,REASONABLE(128),ANY);
4057 PL_savestack_ix = 0;
4058 PL_savestack_max = REASONABLE(128);
4067 while (PL_curstackinfo->si_next)
4068 PL_curstackinfo = PL_curstackinfo->si_next;
4069 while (PL_curstackinfo) {
4070 PERL_SI *p = PL_curstackinfo->si_prev;
4071 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4072 Safefree(PL_curstackinfo->si_cxstack);
4073 Safefree(PL_curstackinfo);
4074 PL_curstackinfo = p;
4076 Safefree(PL_tmps_stack);
4077 Safefree(PL_markstack);
4078 Safefree(PL_scopestack);
4080 Safefree(PL_scopestack_name);
4082 Safefree(PL_savestack);
4086 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4088 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4089 AV *const isa = GvAVn(gv);
4092 PERL_ARGS_ASSERT_POPULATE_ISA;
4094 if(AvFILLp(isa) != -1)
4097 /* NOTE: No support for tied ISA */
4099 va_start(args, len);
4101 const char *const parent = va_arg(args, const char*);
4106 parent_len = va_arg(args, size_t);
4108 /* Arguments are supplied with a trailing :: */
4109 assert(parent_len > 2);
4110 assert(parent[parent_len - 1] == ':');
4111 assert(parent[parent_len - 2] == ':');
4112 av_push(isa, newSVpvn(parent, parent_len - 2));
4113 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4120 S_init_predump_symbols(pTHX)
4126 sv_setpvs(get_sv("\"", GV_ADD), " ");
4127 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4130 /* Historically, PVIOs were blessed into IO::Handle, unless
4131 FileHandle was loaded, in which case they were blessed into
4132 that. Action at a distance.
4133 However, if we simply bless into IO::Handle, we break code
4134 that assumes that PVIOs will have (among others) a seek
4135 method. IO::File inherits from IO::Handle and IO::Seekable,
4136 and provides the needed methods. But if we simply bless into
4137 it, then we break code that assumed that by loading
4138 IO::Handle, *it* would work.
4139 So a compromise is to set up the correct @IO::File::ISA,
4140 so that code that does C<use IO::Handle>; will still work.
4143 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4144 STR_WITH_LEN("IO::Handle::"),
4145 STR_WITH_LEN("IO::Seekable::"),
4146 STR_WITH_LEN("Exporter::"),
4149 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4150 GvMULTI_on(PL_stdingv);
4151 io = GvIOp(PL_stdingv);
4152 IoTYPE(io) = IoTYPE_RDONLY;
4153 IoIFP(io) = PerlIO_stdin();
4154 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4156 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4158 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4161 IoTYPE(io) = IoTYPE_WRONLY;
4162 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4164 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4166 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4168 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4169 GvMULTI_on(PL_stderrgv);
4170 io = GvIOp(PL_stderrgv);
4171 IoTYPE(io) = IoTYPE_WRONLY;
4172 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4173 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4175 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4177 PL_statname = newSVpvs(""); /* last filename we did stat on */
4181 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4185 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4187 argc--,argv++; /* skip name of script */
4188 if (PL_doswitches) {
4189 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4193 if (argv[0][1] == '-' && !argv[0][2]) {
4197 if ((s = strchr(argv[0], '='))) {
4198 const char *const start_name = argv[0] + 1;
4199 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4200 TRUE, SVt_PV)), s + 1);
4203 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4206 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4207 GvMULTI_on(PL_argvgv);
4208 (void)gv_AVadd(PL_argvgv);
4209 av_clear(GvAVn(PL_argvgv));
4210 for (; argc > 0; argc--,argv++) {
4211 SV * const sv = newSVpv(argv[0],0);
4212 av_push(GvAVn(PL_argvgv),sv);
4213 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4214 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4217 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4218 (void)sv_utf8_decode(sv);
4222 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4223 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4224 "-i used with no filenames on the command line, "
4225 "reading from STDIN");
4229 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4234 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4236 PL_toptarget = newSV_type(SVt_PVIV);
4237 sv_setpvs(PL_toptarget, "");
4238 PL_bodytarget = newSV_type(SVt_PVIV);
4239 sv_setpvs(PL_bodytarget, "");
4240 PL_formtarget = PL_bodytarget;
4244 init_argv_symbols(argc,argv);
4246 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4247 sv_setpv(GvSV(tmpgv),PL_origfilename);
4249 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4251 bool env_is_not_environ;
4252 GvMULTI_on(PL_envgv);
4253 hv = GvHVn(PL_envgv);
4254 hv_magic(hv, NULL, PERL_MAGIC_env);
4256 #ifdef USE_ENVIRON_ARRAY
4257 /* Note that if the supplied env parameter is actually a copy
4258 of the global environ then it may now point to free'd memory
4259 if the environment has been modified since. To avoid this
4260 problem we treat env==NULL as meaning 'use the default'
4264 env_is_not_environ = env != environ;
4265 if (env_is_not_environ
4266 # ifdef USE_ITHREADS
4267 && PL_curinterp == aTHX
4276 for (; *env; env++) {
4279 if (!(s = strchr(old_var,'=')) || s == old_var)
4282 #if defined(MSDOS) && !defined(DJGPP)
4284 (void)strupr(old_var);
4287 sv = newSVpv(s+1, 0);
4288 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4289 if (env_is_not_environ)
4293 #endif /* USE_ENVIRON_ARRAY */
4294 #endif /* !PERL_MICRO */
4298 /* touch @F array to prevent spurious warnings 20020415 MJD */
4300 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4305 S_init_perllib(pTHX)
4309 const char *perl5lib = NULL;
4312 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4316 if (!TAINTING_get) {
4318 perl5lib = PerlEnv_getenv("PERL5LIB");
4320 * It isn't possible to delete an environment variable with
4321 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4322 * case we treat PERL5LIB as undefined if it has a zero-length value.
4324 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4325 if (perl5lib && *perl5lib != '\0')
4329 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4331 s = PerlEnv_getenv("PERLLIB");
4333 incpush_use_sep(s, 0, 0);
4336 /* Treat PERL5?LIB as a possible search list logical name -- the
4337 * "natural" VMS idiom for a Unix path string. We allow each
4338 * element to be a set of |-separated directories for compatibility.
4342 if (my_trnlnm("PERL5LIB",buf,0))
4344 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4345 } while (my_trnlnm("PERL5LIB",buf,++idx));
4347 while (my_trnlnm("PERLLIB",buf,idx++))
4348 incpush_use_sep(buf, 0, 0);
4353 #ifndef PERL_IS_MINIPERL
4354 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4355 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4357 /* Use the ~-expanded versions of APPLLIB (undocumented),
4358 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4361 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4362 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4366 /* sitearch is always relative to sitelib on Windows for
4367 * DLL-based path intuition to work correctly */
4368 # if !defined(WIN32)
4369 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4370 INCPUSH_CAN_RELOCATE);
4376 /* this picks up sitearch as well */
4377 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4379 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4381 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4385 #ifdef PERL_VENDORARCH_EXP
4386 /* vendorarch is always relative to vendorlib on Windows for
4387 * DLL-based path intuition to work correctly */
4388 # if !defined(WIN32)
4389 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4390 INCPUSH_CAN_RELOCATE);
4394 #ifdef PERL_VENDORLIB_EXP
4396 /* this picks up vendorarch as well */
4397 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4399 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4401 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4402 INCPUSH_CAN_RELOCATE);
4407 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4411 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4415 s = win32_get_privlib(PERL_FS_VERSION, &len);
4417 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4420 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4422 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4426 #ifdef PERL_OTHERLIBDIRS
4427 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4428 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4429 |INCPUSH_CAN_RELOCATE);
4432 if (!TAINTING_get) {
4435 * It isn't possible to delete an environment variable with
4436 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4437 * case we treat PERL5LIB as undefined if it has a zero-length value.
4439 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4440 if (perl5lib && *perl5lib != '\0')
4444 incpush_use_sep(perl5lib, 0,
4445 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4447 /* Treat PERL5?LIB as a possible search list logical name -- the
4448 * "natural" VMS idiom for a Unix path string. We allow each
4449 * element to be a set of |-separated directories for compatibility.
4453 if (my_trnlnm("PERL5LIB",buf,0))
4455 incpush_use_sep(buf, 0,
4456 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4457 } while (my_trnlnm("PERL5LIB",buf,++idx));
4461 /* Use the ~-expanded versions of APPLLIB (undocumented),
4462 SITELIB and VENDORLIB for older versions
4465 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4466 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4469 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4470 /* Search for version-specific dirs below here */
4471 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4472 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4476 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4477 /* Search for version-specific dirs below here */
4478 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4479 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4482 #ifdef PERL_OTHERLIBDIRS
4483 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4484 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4485 |INCPUSH_CAN_RELOCATE);
4487 #endif /* !PERL_IS_MINIPERL */
4490 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4493 #if defined(DOSISH) || defined(__SYMBIAN32__)
4494 # define PERLLIB_SEP ';'
4497 # define PERLLIB_SEP '|'
4499 # define PERLLIB_SEP ':'
4502 #ifndef PERLLIB_MANGLE
4503 # define PERLLIB_MANGLE(s,n) (s)
4506 #ifndef PERL_IS_MINIPERL
4507 /* Push a directory onto @INC if it exists.
4508 Generate a new SV if we do this, to save needing to copy the SV we push
4511 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4516 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4518 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4519 S_ISDIR(tmpstatbuf.st_mode)) {
4521 dir = newSVsv(stem);
4523 /* Truncate dir back to stem. */
4524 SvCUR_set(dir, SvCUR(stem));
4531 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4533 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4536 PERL_ARGS_ASSERT_MAYBERELOCATE;
4539 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4540 defined to so something (in os2/os2.c), but the code has been
4541 this way, ignoring any possible changed of length, since
4542 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4544 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4550 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4552 while (unix[len-1] == '/') len--; /* Cosmetic */
4553 sv_usepvn(libdir,unix,len);
4556 PerlIO_printf(Perl_error_log,
4557 "Failed to unixify @INC element \"%s\"\n",
4558 SvPV_nolen_const(libdir));
4562 /* Do the if() outside the #ifdef to avoid warnings about an unused
4565 #ifdef PERL_RELOCATABLE_INC
4567 * Relocatable include entries are marked with a leading .../
4570 * 0: Remove that leading ".../"
4571 * 1: Remove trailing executable name (anything after the last '/')
4572 * from the perl path to give a perl prefix
4574 * While the @INC element starts "../" and the prefix ends with a real
4575 * directory (ie not . or ..) chop that real directory off the prefix
4576 * and the leading "../" from the @INC element. ie a logical "../"
4578 * Finally concatenate the prefix and the remainder of the @INC element
4579 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4580 * generates /usr/local/lib/perl5
4582 const char *libpath = SvPVX(libdir);
4583 STRLEN libpath_len = SvCUR(libdir);
4584 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4586 SV * const caret_X = get_sv("\030", 0);
4587 /* Going to use the SV just as a scratch buffer holding a C
4593 /* $^X is *the* source of taint if tainting is on, hence
4594 SvPOK() won't be true. */
4596 assert(SvPOKp(caret_X));
4597 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4599 /* Firstly take off the leading .../
4600 If all else fail we'll do the paths relative to the current
4602 sv_chop(libdir, libpath + 4);
4603 /* Don't use SvPV as we're intentionally bypassing taining,
4604 mortal copies that the mg_get of tainting creates, and
4605 corruption that seems to come via the save stack.
4606 I guess that the save stack isn't correctly set up yet. */
4607 libpath = SvPVX(libdir);
4608 libpath_len = SvCUR(libdir);
4610 /* This would work more efficiently with memrchr, but as it's
4611 only a GNU extension we'd need to probe for it and
4612 implement our own. Not hard, but maybe not worth it? */
4614 prefix = SvPVX(prefix_sv);
4615 lastslash = strrchr(prefix, '/');
4617 /* First time in with the *lastslash = '\0' we just wipe off
4618 the trailing /perl from (say) /usr/foo/bin/perl
4622 while ((*lastslash = '\0'), /* Do that, come what may. */
4623 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4624 && (lastslash = strrchr(prefix, '/')))) {
4625 if (lastslash[1] == '\0'
4626 || (lastslash[1] == '.'
4627 && (lastslash[2] == '/' /* ends "/." */
4628 || (lastslash[2] == '/'
4629 && lastslash[3] == '/' /* or "/.." */
4631 /* Prefix ends "/" or "/." or "/..", any of which
4632 are fishy, so don't do any more logical cleanup.
4636 /* Remove leading "../" from path */
4639 /* Next iteration round the loop removes the last
4640 directory name from prefix by writing a '\0' in
4641 the while clause. */
4643 /* prefix has been terminated with a '\0' to the correct
4644 length. libpath points somewhere into the libdir SV.
4645 We need to join the 2 with '/' and drop the result into
4647 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4648 SvREFCNT_dec(libdir);
4649 /* And this is the new libdir. */
4652 (PerlProc_getuid() != PerlProc_geteuid() ||
4653 PerlProc_getgid() != PerlProc_getegid())) {
4654 /* Need to taint relocated paths if running set ID */
4655 SvTAINTED_on(libdir);
4658 SvREFCNT_dec(prefix_sv);
4666 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4669 #ifndef PERL_IS_MINIPERL
4670 const U8 using_sub_dirs
4671 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4672 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4673 const U8 add_versioned_sub_dirs
4674 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4675 const U8 add_archonly_sub_dirs
4676 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4677 #ifdef PERL_INC_VERSION_LIST
4678 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4681 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4682 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4683 AV *const inc = GvAVn(PL_incgv);
4685 PERL_ARGS_ASSERT_INCPUSH;
4688 /* Could remove this vestigial extra block, if we don't mind a lot of
4689 re-indenting diff noise. */
4691 SV *const libdir = mayberelocate(dir, len, flags);
4692 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4693 arranged to unshift #! line -I onto the front of @INC. However,
4694 -I can add version and architecture specific libraries, and they
4695 need to go first. The old code assumed that it was always
4696 pushing. Hence to make it work, need to push the architecture
4697 (etc) libraries onto a temporary array, then "unshift" that onto
4698 the front of @INC. */
4699 #ifndef PERL_IS_MINIPERL
4700 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4703 * BEFORE pushing libdir onto @INC we may first push version- and
4704 * archname-specific sub-directories.
4706 if (using_sub_dirs) {
4707 SV *subdir = newSVsv(libdir);
4708 #ifdef PERL_INC_VERSION_LIST
4709 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4710 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4711 const char * const *incver;
4714 if (add_versioned_sub_dirs) {
4715 /* .../version/archname if -d .../version/archname */
4716 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4717 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4719 /* .../version if -d .../version */
4720 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4721 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4724 #ifdef PERL_INC_VERSION_LIST
4726 for (incver = incverlist; *incver; incver++) {
4727 /* .../xxx if -d .../xxx */
4728 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4729 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4734 if (add_archonly_sub_dirs) {
4735 /* .../archname if -d .../archname */
4736 sv_catpvs(subdir, "/" ARCHNAME);
4737 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4741 assert (SvREFCNT(subdir) == 1);
4742 SvREFCNT_dec(subdir);
4744 #endif /* !PERL_IS_MINIPERL */
4745 /* finally add this lib directory at the end of @INC */
4747 #ifdef PERL_IS_MINIPERL
4748 const U32 extra = 0;
4750 U32 extra = av_len(av) + 1;
4752 av_unshift(inc, extra + push_basedir);
4754 av_store(inc, extra, libdir);
4755 #ifndef PERL_IS_MINIPERL
4757 /* av owns a reference, av_store() expects to be donated a
4758 reference, and av expects to be sane when it's cleared.
4759 If I wanted to be naughty and wrong, I could peek inside the
4760 implementation of av_clear(), realise that it uses
4761 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4762 and so directly steal from it (with a memcpy() to inc, and
4763 then memset() to NULL them out. But people copy code from the
4764 core expecting it to be best practise, so let's use the API.
4765 Although studious readers will note that I'm not checking any
4767 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4772 else if (push_basedir) {
4773 av_push(inc, libdir);
4776 if (!push_basedir) {
4777 assert (SvREFCNT(libdir) == 1);
4778 SvREFCNT_dec(libdir);
4784 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4788 /* This logic has been broken out from S_incpush(). It may be possible to
4791 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4793 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4794 * argument to incpush_use_sep. This allows creation of relocatable
4795 * Perl distributions that patch the binary at install time. Those
4796 * distributions will have to provide their own relocation tools; this
4797 * is not a feature otherwise supported by core Perl.
4799 #ifndef PERL_RELOCATABLE_INCPUSH
4806 /* Break at all separators */
4807 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4809 /* skip any consecutive separators */
4811 /* Uncomment the next line for PATH semantics */
4812 /* But you'll need to write tests */
4813 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4815 incpush(p, (STRLEN)(s - p), flags);
4820 incpush(p, (STRLEN)(end - p), flags);
4825 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4829 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4835 PERL_ARGS_ASSERT_CALL_LIST;
4837 while (av_len(paramList) >= 0) {
4838 cv = MUTABLE_CV(av_shift(paramList));
4840 if (paramList == PL_beginav) {
4841 /* save PL_beginav for compiler */
4842 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4844 else if (paramList == PL_checkav) {
4845 /* save PL_checkav for compiler */
4846 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4848 else if (paramList == PL_unitcheckav) {
4849 /* save PL_unitcheckav for compiler */
4850 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4861 PL_madskills |= 16384;
4866 PL_madskills &= ~16384;
4869 (void)SvPV_const(atsv, len);
4871 PL_curcop = &PL_compiling;
4872 CopLINE_set(PL_curcop, oldline);
4873 if (paramList == PL_beginav)
4874 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4876 Perl_sv_catpvf(aTHX_ atsv,
4877 "%s failed--call queue aborted",
4878 paramList == PL_checkav ? "CHECK"
4879 : paramList == PL_initav ? "INIT"
4880 : paramList == PL_unitcheckav ? "UNITCHECK"
4882 while (PL_scopestack_ix > oldscope)
4885 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4892 /* my_exit() was called */
4893 while (PL_scopestack_ix > oldscope)
4896 SET_CURSTASH(PL_defstash);
4897 PL_curcop = &PL_compiling;
4898 CopLINE_set(PL_curcop, oldline);
4901 assert(0); /* NOTREACHED */
4904 PL_curcop = &PL_compiling;
4905 CopLINE_set(PL_curcop, oldline);
4908 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4917 Perl_my_exit(pTHX_ U32 status)
4928 STATUS_EXIT_SET(status);
4935 Perl_my_failure_exit(pTHX)
4939 /* We have been called to fall on our sword. The desired exit code
4940 * should be already set in STATUS_UNIX, but could be shifted over
4941 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4944 * If an error code has not been set, then force the issue.
4946 if (MY_POSIX_EXIT) {
4948 /* According to the die_exit.t tests, if errno is non-zero */
4949 /* It should be used for the error status. */
4951 if (errno == EVMSERR) {
4952 STATUS_NATIVE = vaxc$errno;
4955 /* According to die_exit.t tests, if the child_exit code is */
4956 /* also zero, then we need to exit with a code of 255 */
4957 if ((errno != 0) && (errno < 256))
4958 STATUS_UNIX_EXIT_SET(errno);
4959 else if (STATUS_UNIX < 255) {
4960 STATUS_UNIX_EXIT_SET(255);
4965 /* The exit code could have been set by $? or vmsish which
4966 * means that it may not have fatal set. So convert
4967 * success/warning codes to fatal with out changing
4968 * the POSIX status code. The severity makes VMS native
4969 * status handling work, while UNIX mode programs use the
4970 * the POSIX exit codes.
4972 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4973 STATUS_NATIVE &= STS$M_COND_ID;
4974 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4978 /* Traditionally Perl on VMS always expects a Fatal Error. */
4979 if (vaxc$errno & 1) {
4981 /* So force success status to failure */
4982 if (STATUS_NATIVE & 1)
4987 STATUS_UNIX = EINTR; /* In case something cares */
4992 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4994 /* Encode the severity code */
4995 severity = STATUS_NATIVE & STS$M_SEVERITY;
4996 STATUS_UNIX = (severity ? severity : 1) << 8;
4998 /* Perl expects this to be a fatal error */
4999 if (severity != STS$K_SEVERE)
5008 STATUS_UNIX_SET(errno);
5010 exitstatus = STATUS_UNIX >> 8;
5011 if (exitstatus & 255)
5012 STATUS_UNIX_SET(exitstatus);
5014 STATUS_UNIX_SET(255);
5021 S_my_exit_jump(pTHX)
5026 SvREFCNT_dec(PL_e_script);
5030 POPSTACK_TO(PL_mainstack);
5038 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5041 const char * const p = SvPVX_const(PL_e_script);
5042 const char *nl = strchr(p, '\n');
5044 PERL_UNUSED_ARG(idx);
5045 PERL_UNUSED_ARG(maxlen);
5047 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5049 filter_del(read_e_script);
5052 sv_catpvn(buf_sv, p, nl-p);
5053 sv_chop(PL_e_script, nl);
5059 * c-indentation-style: bsd
5061 * indent-tabs-mode: nil
5064 * ex: set ts=8 sts=4 sw=4 et: