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 free_tied_hv_pool();
1223 Safefree(PL_op_mask);
1224 Safefree(PL_psig_name);
1225 PL_psig_name = (SV**)NULL;
1226 PL_psig_ptr = (SV**)NULL;
1228 /* We need to NULL PL_psig_pend first, so that
1229 signal handlers know not to use it */
1230 int *psig_save = PL_psig_pend;
1231 PL_psig_pend = (int*)NULL;
1232 Safefree(psig_save);
1235 TAINTING_set(FALSE);
1236 TAINT_WARN_set(FALSE);
1237 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1240 DEBUG_P(debprofdump());
1242 #ifdef USE_REENTRANT_API
1243 Perl_reentrant_free(aTHX);
1248 while (PL_regmatch_slab) {
1249 regmatch_slab *s = PL_regmatch_slab;
1250 PL_regmatch_slab = PL_regmatch_slab->next;
1254 /* As the absolutely last thing, free the non-arena SV for mess() */
1257 /* we know that type == SVt_PVMG */
1259 /* it could have accumulated taint magic */
1262 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1263 moremagic = mg->mg_moremagic;
1264 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1266 Safefree(mg->mg_ptr);
1270 /* we know that type >= SVt_PV */
1271 SvPV_free(PL_mess_sv);
1272 Safefree(SvANY(PL_mess_sv));
1273 Safefree(PL_mess_sv);
1280 =for apidoc perl_free
1282 Releases a Perl interpreter. See L<perlembed>.
1292 PERL_ARGS_ASSERT_PERL_FREE;
1294 if (PL_veto_cleanup)
1297 #ifdef PERL_TRACK_MEMPOOL
1300 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1301 * value as we're probably hunting memory leaks then
1303 if (PL_perl_destruct_level == 0) {
1304 const U32 old_debug = PL_debug;
1305 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1306 thread at thread exit. */
1308 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1309 "free this thread's memory\n");
1310 PL_debug &= ~ DEBUG_m_FLAG;
1312 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1313 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1314 PL_debug = old_debug;
1319 #if defined(WIN32) || defined(NETWARE)
1320 # if defined(PERL_IMPLICIT_SYS)
1323 void *host = nw_internal_host;
1325 void *host = w32_internal_host;
1327 PerlMem_free(aTHXx);
1329 nw_delete_internal_host(host);
1331 win32_delete_internal_host(host);
1335 PerlMem_free(aTHXx);
1338 PerlMem_free(aTHXx);
1342 #if defined(USE_ITHREADS)
1343 /* provide destructors to clean up the thread key when libperl is unloaded */
1344 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1346 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1347 #pragma fini "perl_fini"
1348 #elif defined(__sun) && !defined(__GNUC__)
1349 #pragma fini (perl_fini)
1353 #if defined(__GNUC__)
1354 __attribute__((destructor))
1359 if (PL_curinterp && !PL_veto_cleanup)
1364 #endif /* THREADS */
1367 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1370 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1371 PL_exitlist[PL_exitlistlen].fn = fn;
1372 PL_exitlist[PL_exitlistlen].ptr = ptr;
1377 S_set_caret_X(pTHX) {
1379 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1381 SV *const caret_x = GvSV(tmpgv);
1383 sv_setpv(caret_x, os2_execname(aTHX));
1385 # ifdef USE_KERN_PROC_PATHNAME
1390 mib[2] = KERN_PROC_PATHNAME;
1393 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1394 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1395 sv_grow(caret_x, size);
1397 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1399 SvPOK_only(caret_x);
1400 SvCUR_set(caret_x, size - 1);
1405 # elif defined(USE_NSGETEXECUTABLEPATH)
1407 uint32_t size = sizeof(buf);
1409 _NSGetExecutablePath(buf, &size);
1410 if (size < MAXPATHLEN * MAXPATHLEN) {
1411 sv_grow(caret_x, size);
1412 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1413 char *const tidied = realpath(SvPVX(caret_x), NULL);
1415 sv_setpv(caret_x, tidied);
1418 SvPOK_only(caret_x);
1419 SvCUR_set(caret_x, size);
1424 # elif defined(HAS_PROCSELFEXE)
1425 char buf[MAXPATHLEN];
1426 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1428 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1429 includes a spurious NUL which will cause $^X to fail in system
1430 or backticks (this will prevent extensions from being built and
1431 many tests from working). readlink is not meant to add a NUL.
1432 Normal readlink works fine.
1434 if (len > 0 && buf[len-1] == '\0') {
1438 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1439 returning the text "unknown" from the readlink rather than the path
1440 to the executable (or returning an error from the readlink). Any
1441 valid path has a '/' in it somewhere, so use that to validate the
1442 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1444 if (len > 0 && memchr(buf, '/', len)) {
1445 sv_setpvn(caret_x, buf, len);
1449 /* Fallback to this: */
1450 sv_setpv(caret_x, PL_origargv[0]);
1456 =for apidoc perl_parse
1458 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1463 #define SET_CURSTASH(newstash) \
1464 if (PL_curstash != newstash) { \
1465 SvREFCNT_dec(PL_curstash); \
1466 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1470 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1477 PERL_ARGS_ASSERT_PERL_PARSE;
1478 #ifndef MULTIPLICITY
1479 PERL_UNUSED_ARG(my_perl);
1481 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1483 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1485 if (s && (atoi(s) == 1)) {
1486 unsigned char *seed= PERL_HASH_SEED;
1487 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1488 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1489 while (seed < seed_end) {
1490 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1492 #ifdef PERL_HASH_RANDOMIZE_KEYS
1493 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1494 PL_HASH_RAND_BITS_ENABLED,
1495 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1497 PerlIO_printf(Perl_debug_log, "\n");
1500 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1504 if (PL_origalen != 0) {
1505 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1508 /* Set PL_origalen be the sum of the contiguous argv[]
1509 * elements plus the size of the env in case that it is
1510 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1511 * as the maximum modifiable length of $0. In the worst case
1512 * the area we are able to modify is limited to the size of
1513 * the original argv[0]. (See below for 'contiguous', though.)
1515 const char *s = NULL;
1518 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1519 /* Do the mask check only if the args seem like aligned. */
1521 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1523 /* See if all the arguments are contiguous in memory. Note
1524 * that 'contiguous' is a loose term because some platforms
1525 * align the argv[] and the envp[]. If the arguments look
1526 * like non-aligned, assume that they are 'strictly' or
1527 * 'traditionally' contiguous. If the arguments look like
1528 * aligned, we just check that they are within aligned
1529 * PTRSIZE bytes. As long as no system has something bizarre
1530 * like the argv[] interleaved with some other data, we are
1531 * fine. (Did I just evoke Murphy's Law?) --jhi */
1532 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1534 for (i = 1; i < PL_origargc; i++) {
1535 if ((PL_origargv[i] == s + 1
1537 || PL_origargv[i] == s + 2
1542 (PL_origargv[i] > s &&
1544 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1555 #ifndef PERL_USE_SAFE_PUTENV
1556 /* Can we grab env area too to be used as the area for $0? */
1557 if (s && PL_origenviron && !PL_use_safe_putenv) {
1558 if ((PL_origenviron[0] == s + 1)
1561 (PL_origenviron[0] > s &&
1562 PL_origenviron[0] <=
1563 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1566 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1567 s = PL_origenviron[0];
1570 my_setenv("NoNe SuCh", NULL);
1571 /* Force copy of environment. */
1572 for (i = 1; PL_origenviron[i]; i++) {
1573 if (PL_origenviron[i] == s + 1
1576 (PL_origenviron[i] > s &&
1577 PL_origenviron[i] <=
1578 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1581 s = PL_origenviron[i];
1589 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1591 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1596 /* Come here if running an undumped a.out. */
1598 PL_origfilename = savepv(argv[0]);
1599 PL_do_undump = FALSE;
1600 cxstack_ix = -1; /* start label stack again */
1602 assert (!TAINT_get);
1604 S_set_caret_X(aTHX);
1606 init_postdump_symbols(argc,argv,env);
1611 op_free(PL_main_root);
1612 PL_main_root = NULL;
1614 PL_main_start = NULL;
1615 SvREFCNT_dec(PL_main_cv);
1619 oldscope = PL_scopestack_ix;
1620 PL_dowarn = G_WARN_OFF;
1625 parse_body(env,xsinit);
1626 if (PL_unitcheckav) {
1627 call_list(oldscope, PL_unitcheckav);
1630 PERL_SET_PHASE(PERL_PHASE_CHECK);
1631 call_list(oldscope, PL_checkav);
1639 /* my_exit() was called */
1640 while (PL_scopestack_ix > oldscope)
1643 SET_CURSTASH(PL_defstash);
1644 if (PL_unitcheckav) {
1645 call_list(oldscope, PL_unitcheckav);
1648 PERL_SET_PHASE(PERL_PHASE_CHECK);
1649 call_list(oldscope, PL_checkav);
1654 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1662 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1663 miniperl, and we need to see those flags reflected in the values here. */
1665 /* What this returns is subject to change. Use the public interface in Config.
1668 S_Internals_V(pTHX_ CV *cv)
1671 #ifdef LOCAL_PATCH_COUNT
1672 const int local_patch_count = LOCAL_PATCH_COUNT;
1674 const int local_patch_count = 0;
1676 const int entries = 3 + local_patch_count;
1678 static const char non_bincompat_options[] =
1685 # ifdef NO_HASH_SEED
1688 # ifdef NO_TAINT_SUPPORT
1691 # ifdef PERL_DISABLE_PMC
1694 # ifdef PERL_DONT_CREATE_GVSV
1695 " PERL_DONT_CREATE_GVSV"
1697 # ifdef PERL_EXTERNAL_GLOB
1698 " PERL_EXTERNAL_GLOB"
1700 # ifdef PERL_HASH_FUNC_SIPHASH
1701 " PERL_HASH_FUNC_SIPHASH"
1703 # ifdef PERL_HASH_FUNC_SDBM
1704 " PERL_HASH_FUNC_SDBM"
1706 # ifdef PERL_HASH_FUNC_DJB2
1707 " PERL_HASH_FUNC_DJB2"
1709 # ifdef PERL_HASH_FUNC_SUPERFAST
1710 " PERL_HASH_FUNC_SUPERFAST"
1712 # ifdef PERL_HASH_FUNC_MURMUR3
1713 " PERL_HASH_FUNC_MURMUR3"
1715 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1716 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1718 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1719 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1721 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1722 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1724 # ifdef PERL_IS_MINIPERL
1727 # ifdef PERL_MALLOC_WRAP
1730 # ifdef PERL_MEM_LOG
1733 # ifdef PERL_MEM_LOG_NOIMPL
1734 " PERL_MEM_LOG_NOIMPL"
1736 # ifdef PERL_NEW_COPY_ON_WRITE
1737 " PERL_NEW_COPY_ON_WRITE"
1739 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1740 " PERL_PERTURB_KEYS_DETERMINISTIC"
1742 # ifdef PERL_PERTURB_KEYS_DISABLED
1743 " PERL_PERTURB_KEYS_DISABLED"
1745 # ifdef PERL_PERTURB_KEYS_RANDOM
1746 " PERL_PERTURB_KEYS_RANDOM"
1748 # ifdef PERL_PRESERVE_IVUV
1749 " PERL_PRESERVE_IVUV"
1751 # ifdef PERL_RELOCATABLE_INCPUSH
1752 " PERL_RELOCATABLE_INCPUSH"
1754 # ifdef PERL_USE_DEVEL
1757 # ifdef PERL_USE_SAFE_PUTENV
1758 " PERL_USE_SAFE_PUTENV"
1760 # ifdef UNLINK_ALL_VERSIONS
1761 " UNLINK_ALL_VERSIONS"
1763 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1764 " USE_ATTRIBUTES_FOR_PERLIO"
1766 # ifdef USE_FAST_STDIO
1769 # ifdef USE_HASH_SEED_EXPLICIT
1770 " USE_HASH_SEED_EXPLICIT"
1775 # ifdef USE_LOCALE_CTYPE
1778 # ifdef USE_PERL_ATOF
1781 # ifdef USE_SITECUSTOMIZE
1782 " USE_SITECUSTOMIZE"
1785 PERL_UNUSED_ARG(cv);
1786 PERL_UNUSED_ARG(items);
1788 EXTEND(SP, entries);
1790 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1791 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1792 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1796 PUSHs(Perl_newSVpvn_flags(aTHX_
1797 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1800 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1804 PUSHs(&PL_sv_undef);
1807 for (i = 1; i <= local_patch_count; i++) {
1808 /* This will be an undef, if PL_localpatches[i] is NULL. */
1809 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1815 #define INCPUSH_UNSHIFT 0x01
1816 #define INCPUSH_ADD_OLD_VERS 0x02
1817 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1818 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1819 #define INCPUSH_NOT_BASEDIR 0x10
1820 #define INCPUSH_CAN_RELOCATE 0x20
1821 #define INCPUSH_ADD_SUB_DIRS \
1822 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1825 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1829 int argc = PL_origargc;
1830 char **argv = PL_origargv;
1831 const char *scriptname = NULL;
1832 VOL bool dosearch = FALSE;
1834 bool doextract = FALSE;
1835 const char *cddir = NULL;
1836 #ifdef USE_SITECUSTOMIZE
1837 bool minus_f = FALSE;
1839 SV *linestr_sv = NULL;
1840 bool add_read_e_script = FALSE;
1841 U32 lex_start_flags = 0;
1843 PERL_SET_PHASE(PERL_PHASE_START);
1849 for (argc--,argv++; argc > 0; argc--,argv++) {
1850 if (argv[0][0] != '-' || !argv[0][1])
1856 #ifndef PERL_STRICT_CR
1880 if ((s = moreswitches(s)))
1885 #if SILENT_NO_TAINT_SUPPORT
1886 /* silently ignore */
1887 #elif NO_TAINT_SUPPORT
1888 Perl_croak_nocontext("This perl was compiled without taint support. "
1889 "Cowardly refusing to run with -t or -T flags");
1891 CHECK_MALLOC_TOO_LATE_FOR('t');
1892 if( !TAINTING_get ) {
1893 TAINT_WARN_set(TRUE);
1900 #if SILENT_NO_TAINT_SUPPORT
1901 /* silently ignore */
1902 #elif NO_TAINT_SUPPORT
1903 Perl_croak_nocontext("This perl was compiled without taint support. "
1904 "Cowardly refusing to run with -t or -T flags");
1906 CHECK_MALLOC_TOO_LATE_FOR('T');
1908 TAINT_WARN_set(FALSE);
1917 forbid_setid('e', FALSE);
1919 PL_e_script = newSVpvs("");
1920 add_read_e_script = TRUE;
1923 sv_catpv(PL_e_script, s);
1925 sv_catpv(PL_e_script, argv[1]);
1929 Perl_croak(aTHX_ "No code specified for -%c", c);
1930 sv_catpvs(PL_e_script, "\n");
1934 #ifdef USE_SITECUSTOMIZE
1940 case 'I': /* -I handled both here and in moreswitches() */
1941 forbid_setid('I', FALSE);
1942 if (!*++s && (s=argv[1]) != NULL) {
1946 STRLEN len = strlen(s);
1947 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1950 Perl_croak(aTHX_ "No directory specified for -I");
1953 forbid_setid('S', FALSE);
1962 opts_prog = newSVpvs("use Config; Config::_V()");
1966 opts_prog = Perl_newSVpvf(aTHX_
1967 "use Config; Config::config_vars(qw%c%s%c)",
1971 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1972 /* don't look for script or read stdin */
1973 scriptname = BIT_BUCKET;
1985 if (!*++s || isSPACE(*s)) {
1989 /* catch use of gnu style long options.
1990 Both of these exit immediately. */
1991 if (strEQ(s, "version"))
1993 if (strEQ(s, "help"))
1998 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
2009 #ifndef SECURE_INTERNAL_GETENV
2012 (s = PerlEnv_getenv("PERL5OPT")))
2016 if (*s == '-' && *(s+1) == 'T') {
2017 #if SILENT_NO_TAINT_SUPPORT
2018 /* silently ignore */
2019 #elif NO_TAINT_SUPPORT
2020 Perl_croak_nocontext("This perl was compiled without taint support. "
2021 "Cowardly refusing to run with -t or -T flags");
2023 CHECK_MALLOC_TOO_LATE_FOR('T');
2025 TAINT_WARN_set(FALSE);
2029 char *popt_copy = NULL;
2042 if (!strchr("CDIMUdmtwW", *s))
2043 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2047 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2048 s = popt_copy + (s - d);
2056 #if SILENT_NO_TAINT_SUPPORT
2057 /* silently ignore */
2058 #elif NO_TAINT_SUPPORT
2059 Perl_croak_nocontext("This perl was compiled without taint support. "
2060 "Cowardly refusing to run with -t or -T flags");
2062 if( !TAINTING_get) {
2063 TAINT_WARN_set(TRUE);
2075 /* Set $^X early so that it can be used for relocatable paths in @INC */
2076 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2077 assert (!TAINT_get);
2079 S_set_caret_X(aTHX);
2082 #if defined(USE_SITECUSTOMIZE)
2084 /* The games with local $! are to avoid setting errno if there is no
2085 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2086 ie a q() operator with a NUL byte as a the delimiter. This avoids
2087 problems with pathnames containing (say) ' */
2088 # ifdef PERL_IS_MINIPERL
2089 AV *const inc = GvAV(PL_incgv);
2090 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2093 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2094 it should be reported immediately as a build failure. */
2095 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2097 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} and do q%c%"SVf"/buildcustomize.pl%c || die $@ }",
2102 /* SITELIB_EXP is a function call on Win32. */
2103 const char *const raw_sitelib = SITELIB_EXP;
2105 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2106 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2107 INCPUSH_CAN_RELOCATE);
2108 const char *const sitelib = SvPVX(sitelib_sv);
2109 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2111 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2114 assert (SvREFCNT(sitelib_sv) == 1);
2115 SvREFCNT_dec(sitelib_sv);
2122 scriptname = argv[0];
2125 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2127 else if (scriptname == NULL) {
2129 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2135 assert (!TAINT_get);
2139 bool suidscript = FALSE;
2141 rsfp = open_script(scriptname, dosearch, &suidscript);
2143 rsfp = PerlIO_stdin();
2144 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2147 validate_suid(rsfp);
2150 # if defined(SIGCHLD) || defined(SIGCLD)
2153 # define SIGCHLD SIGCLD
2155 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2156 if (sigstate == (Sighandler_t) SIG_IGN) {
2157 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2158 "Can't ignore signal CHLD, forcing to default");
2159 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2167 /* This will croak if suidscript is true, as -x cannot be used with
2169 forbid_setid('x', suidscript);
2170 /* Hence you can't get here if suidscript is true */
2172 linestr_sv = newSV_type(SVt_PV);
2173 lex_start_flags |= LEX_START_COPIED;
2174 find_beginning(linestr_sv, rsfp);
2175 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2176 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2180 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2181 CvUNIQUE_on(PL_compcv);
2183 CvPADLIST(PL_compcv) = pad_new(0);
2185 PL_isarev = newHV();
2188 boot_core_UNIVERSAL();
2190 newXS("Internals::V", S_Internals_V, __FILE__);
2193 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2195 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2201 # ifdef HAS_SOCKS5_INIT
2202 socks5_init(argv[0]);
2208 init_predump_symbols();
2209 /* init_postdump_symbols not currently designed to be called */
2210 /* more than once (ENV isn't cleared first, for example) */
2211 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2213 init_postdump_symbols(argc,argv,env);
2215 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2216 * or explicitly in some platforms.
2217 * locale.c:Perl_init_i18nl10n() if the environment
2218 * look like the user wants to use UTF-8. */
2219 #if defined(__SYMBIAN32__)
2220 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2222 # ifndef PERL_IS_MINIPERL
2224 /* Requires init_predump_symbols(). */
2225 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2230 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2231 * and the default open disciplines. */
2232 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2233 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2235 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2236 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2237 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2239 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2240 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2241 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2243 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2244 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2245 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2247 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2248 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2251 sv_setpvs(sv, ":utf8\0:utf8");
2253 sv_setpvs(sv, ":utf8\0");
2256 sv_setpvs(sv, "\0:utf8");
2265 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2266 if (strEQ(s, "unsafe"))
2267 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2268 else if (strEQ(s, "safe"))
2269 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2271 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2278 if (!TAINTING_get &&
2279 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2283 PL_xmlfp = PerlIO_stdout();
2285 PL_xmlfp = PerlIO_open(s, "w");
2287 Perl_croak(aTHX_ "Can't open %s", s);
2289 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2295 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2296 PL_madskills = atoi(s);
2297 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2302 lex_start(linestr_sv, rsfp, lex_start_flags);
2303 SvREFCNT_dec(linestr_sv);
2305 PL_subname = newSVpvs("main");
2307 if (add_read_e_script)
2308 filter_add(read_e_script, NULL);
2310 /* now parse the script */
2312 SETERRNO(0,SS_NORMAL);
2313 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2315 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2317 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2321 CopLINE_set(PL_curcop, 0);
2322 SET_CURSTASH(PL_defstash);
2324 SvREFCNT_dec(PL_e_script);
2332 SAVECOPFILE(PL_curcop);
2333 SAVECOPLINE(PL_curcop);
2334 gv_check(PL_defstash);
2343 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2344 dump_mstats("after compilation:");
2349 PL_restartjmpenv = NULL;
2355 =for apidoc perl_run
2357 Tells a Perl interpreter to run. See L<perlembed>.
2370 PERL_ARGS_ASSERT_PERL_RUN;
2371 #ifndef MULTIPLICITY
2372 PERL_UNUSED_ARG(my_perl);
2375 oldscope = PL_scopestack_ix;
2383 cxstack_ix = -1; /* start context stack again */
2385 case 0: /* normal completion */
2389 case 2: /* my_exit() */
2390 while (PL_scopestack_ix > oldscope)
2393 SET_CURSTASH(PL_defstash);
2394 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2395 PL_endav && !PL_minus_c) {
2396 PERL_SET_PHASE(PERL_PHASE_END);
2397 call_list(oldscope, PL_endav);
2400 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2401 dump_mstats("after execution: ");
2407 POPSTACK_TO(PL_mainstack);
2410 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2421 S_run_body(pTHX_ I32 oldscope)
2424 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2425 PL_sawampersand ? "Enabling" : "Omitting",
2426 (unsigned int)(PL_sawampersand)));
2428 if (!PL_restartop) {
2432 exit(0); /* less likely to core dump than my_exit(0) */
2436 if (DEBUG_x_TEST || DEBUG_B_TEST)
2437 dump_all_perl(!DEBUG_B_TEST);
2439 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2443 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2446 if (PERLDB_SINGLE && PL_DBsingle)
2447 sv_setiv(PL_DBsingle, 1);
2449 PERL_SET_PHASE(PERL_PHASE_INIT);
2450 call_list(oldscope, PL_initav);
2452 #ifdef PERL_DEBUG_READONLY_OPS
2453 if (PL_main_root && PL_main_root->op_slabbed)
2454 Slab_to_ro(OpSLAB(PL_main_root));
2460 PERL_SET_PHASE(PERL_PHASE_RUN);
2463 PL_restartjmpenv = NULL;
2464 PL_op = PL_restartop;
2468 else if (PL_main_start) {
2469 CvDEPTH(PL_main_cv) = 1;
2470 PL_op = PL_main_start;
2474 assert(0); /* NOTREACHED */
2478 =head1 SV Manipulation Functions
2480 =for apidoc p||get_sv
2482 Returns the SV of the specified Perl scalar. C<flags> are passed to
2483 C<gv_fetchpv>. If C<GV_ADD> is set and the
2484 Perl variable does not exist then it will be created. If C<flags> is zero
2485 and the variable does not exist then NULL is returned.
2491 Perl_get_sv(pTHX_ const char *name, I32 flags)
2495 PERL_ARGS_ASSERT_GET_SV;
2497 gv = gv_fetchpv(name, flags, SVt_PV);
2504 =head1 Array Manipulation Functions
2506 =for apidoc p||get_av
2508 Returns the AV of the specified Perl global or package array with the given
2509 name (so it won't work on lexical variables). C<flags> are passed
2510 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2511 Perl variable does not exist then it will be created. If C<flags> is zero
2512 and the variable does not exist then NULL is returned.
2514 Perl equivalent: C<@{"$name"}>.
2520 Perl_get_av(pTHX_ const char *name, I32 flags)
2522 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2524 PERL_ARGS_ASSERT_GET_AV;
2534 =head1 Hash Manipulation Functions
2536 =for apidoc p||get_hv
2538 Returns the HV of the specified Perl hash. C<flags> are passed to
2539 C<gv_fetchpv>. If C<GV_ADD> is set and the
2540 Perl variable does not exist then it will be created. If C<flags> is zero
2541 and the variable does not exist then NULL is returned.
2547 Perl_get_hv(pTHX_ const char *name, I32 flags)
2549 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2551 PERL_ARGS_ASSERT_GET_HV;
2561 =head1 CV Manipulation Functions
2563 =for apidoc p||get_cvn_flags
2565 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2566 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2567 exist then it will be declared (which has the same effect as saying
2568 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2569 then NULL is returned.
2571 =for apidoc p||get_cv
2573 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2579 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2581 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2583 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2585 /* XXX this is probably not what they think they're getting.
2586 * It has the same effect as "sub name;", i.e. just a forward
2588 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2589 return newSTUB(gv,0);
2596 /* Nothing in core calls this now, but we can't replace it with a macro and
2597 move it to mathoms.c as a macro would evaluate name twice. */
2599 Perl_get_cv(pTHX_ const char *name, I32 flags)
2601 PERL_ARGS_ASSERT_GET_CV;
2603 return get_cvn_flags(name, strlen(name), flags);
2606 /* Be sure to refetch the stack pointer after calling these routines. */
2610 =head1 Callback Functions
2612 =for apidoc p||call_argv
2614 Performs a callback to the specified named and package-scoped Perl subroutine
2615 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2617 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2623 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2625 /* See G_* flags in cop.h */
2626 /* null terminated arg list */
2631 PERL_ARGS_ASSERT_CALL_ARGV;
2636 mXPUSHs(newSVpv(*argv,0));
2641 return call_pv(sub_name, flags);
2645 =for apidoc p||call_pv
2647 Performs a callback to the specified Perl sub. See L<perlcall>.
2653 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2654 /* name of the subroutine */
2655 /* See G_* flags in cop.h */
2657 PERL_ARGS_ASSERT_CALL_PV;
2659 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2663 =for apidoc p||call_method
2665 Performs a callback to the specified Perl method. The blessed object must
2666 be on the stack. See L<perlcall>.
2672 Perl_call_method(pTHX_ const char *methname, I32 flags)
2673 /* name of the subroutine */
2674 /* See G_* flags in cop.h */
2677 PERL_ARGS_ASSERT_CALL_METHOD;
2679 len = strlen(methname);
2681 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2682 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2685 /* May be called with any of a CV, a GV, or an SV containing the name. */
2687 =for apidoc p||call_sv
2689 Performs a callback to the Perl sub whose name is in the SV. See
2696 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2697 /* See G_* flags in cop.h */
2700 LOGOP myop; /* fake syntax tree node */
2705 bool oldcatch = CATCH_GET;
2707 OP* const oldop = PL_op;
2710 PERL_ARGS_ASSERT_CALL_SV;
2712 if (flags & G_DISCARD) {
2716 if (!(flags & G_WANT)) {
2717 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2722 Zero(&myop, 1, LOGOP);
2723 if (!(flags & G_NOARGS))
2724 myop.op_flags |= OPf_STACKED;
2725 myop.op_flags |= OP_GIMME_REVERSE(flags);
2729 EXTEND(PL_stack_sp, 1);
2730 *++PL_stack_sp = sv;
2732 oldscope = PL_scopestack_ix;
2734 if (PERLDB_SUB && PL_curstash != PL_debstash
2735 /* Handle first BEGIN of -d. */
2736 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2737 /* Try harder, since this may have been a sighandler, thus
2738 * curstash may be meaningless. */
2739 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2740 && !(flags & G_NODEBUG))
2741 myop.op_private |= OPpENTERSUB_DB;
2743 if (flags & G_METHOD) {
2744 Zero(&method_op, 1, UNOP);
2745 method_op.op_next = (OP*)&myop;
2746 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2747 method_op.op_type = OP_METHOD;
2748 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2749 myop.op_type = OP_ENTERSUB;
2750 PL_op = (OP*)&method_op;
2753 if (!(flags & G_EVAL)) {
2755 CALL_BODY_SUB((OP*)&myop);
2756 retval = PL_stack_sp - (PL_stack_base + oldmark);
2757 CATCH_SET(oldcatch);
2760 myop.op_other = (OP*)&myop;
2762 create_eval_scope(flags|G_FAKINGEVAL);
2770 CALL_BODY_SUB((OP*)&myop);
2771 retval = PL_stack_sp - (PL_stack_base + oldmark);
2772 if (!(flags & G_KEEPERR)) {
2780 /* my_exit() was called */
2781 SET_CURSTASH(PL_defstash);
2785 assert(0); /* NOTREACHED */
2788 PL_restartjmpenv = NULL;
2789 PL_op = PL_restartop;
2793 PL_stack_sp = PL_stack_base + oldmark;
2794 if ((flags & G_WANT) == G_ARRAY)
2798 *++PL_stack_sp = &PL_sv_undef;
2803 if (PL_scopestack_ix > oldscope)
2804 delete_eval_scope();
2808 if (flags & G_DISCARD) {
2809 PL_stack_sp = PL_stack_base + oldmark;
2818 /* Eval a string. The G_EVAL flag is always assumed. */
2821 =for apidoc p||eval_sv
2823 Tells Perl to C<eval> the string in the SV. It supports the same flags
2824 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2830 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2832 /* See G_* flags in cop.h */
2836 UNOP myop; /* fake syntax tree node */
2837 VOL I32 oldmark = SP - PL_stack_base;
2840 OP* const oldop = PL_op;
2843 PERL_ARGS_ASSERT_EVAL_SV;
2845 if (flags & G_DISCARD) {
2852 Zero(&myop, 1, UNOP);
2853 EXTEND(PL_stack_sp, 1);
2854 *++PL_stack_sp = sv;
2856 if (!(flags & G_NOARGS))
2857 myop.op_flags = OPf_STACKED;
2858 myop.op_type = OP_ENTEREVAL;
2859 myop.op_flags |= OP_GIMME_REVERSE(flags);
2860 if (flags & G_KEEPERR)
2861 myop.op_flags |= OPf_SPECIAL;
2863 if (flags & G_RE_REPARSING)
2864 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2866 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2867 * before a PUSHEVAL, which corrupts the stack after a croak */
2868 TAINT_PROPER("eval_sv()");
2874 if (PL_op == (OP*)(&myop)) {
2875 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2877 goto fail; /* failed in compilation */
2880 retval = PL_stack_sp - (PL_stack_base + oldmark);
2881 if (!(flags & G_KEEPERR)) {
2889 /* my_exit() was called */
2890 SET_CURSTASH(PL_defstash);
2894 assert(0); /* NOTREACHED */
2897 PL_restartjmpenv = NULL;
2898 PL_op = PL_restartop;
2903 PL_stack_sp = PL_stack_base + oldmark;
2904 if ((flags & G_WANT) == G_ARRAY)
2908 *++PL_stack_sp = &PL_sv_undef;
2914 if (flags & G_DISCARD) {
2915 PL_stack_sp = PL_stack_base + oldmark;
2925 =for apidoc p||eval_pv
2927 Tells Perl to C<eval> the given string and return an SV* result.
2933 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2936 SV* sv = newSVpv(p, 0);
2938 PERL_ARGS_ASSERT_EVAL_PV;
2940 eval_sv(sv, G_SCALAR);
2949 /* just check empty string or undef? */
2950 if (croak_on_error) {
2951 SV * const errsv = ERRSV;
2952 if(SvTRUE_NN(errsv))
2953 /* replace with croak_sv? */
2954 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2960 /* Require a module. */
2963 =head1 Embedding Functions
2965 =for apidoc p||require_pv
2967 Tells Perl to C<require> the file named by the string argument. It is
2968 analogous to the Perl code C<eval "require '$file'">. It's even
2969 implemented that way; consider using load_module instead.
2974 Perl_require_pv(pTHX_ const char *pv)
2980 PERL_ARGS_ASSERT_REQUIRE_PV;
2982 PUSHSTACKi(PERLSI_REQUIRE);
2984 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2985 eval_sv(sv_2mortal(sv), G_DISCARD);
2991 S_usage(pTHX) /* XXX move this out into a module ? */
2993 /* This message really ought to be max 23 lines.
2994 * Removed -h because the user already knows that option. Others? */
2996 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2997 minimum of 509 character string literals. */
2998 static const char * const usage_msg[] = {
2999 " -0[octal] specify record separator (\\0, if no argument)\n"
3000 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
3001 " -C[number/list] enables the listed Unicode features\n"
3002 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
3003 " -d[:debugger] run program under debugger\n"
3004 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3005 " -e program one line of program (several -e's allowed, omit programfile)\n"
3006 " -E program like -e, but enables all optional features\n"
3007 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3008 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3009 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3010 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3011 " -l[octal] enable line ending processing, specifies line terminator\n"
3012 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3013 " -n assume \"while (<>) { ... }\" loop around program\n"
3014 " -p assume loop like -n but print line also, like sed\n"
3015 " -s enable rudimentary parsing for switches after programfile\n"
3016 " -S look for programfile using PATH environment variable\n",
3017 " -t enable tainting warnings\n"
3018 " -T enable tainting checks\n"
3019 " -u dump core after parsing program\n"
3020 " -U allow unsafe operations\n"
3021 " -v print version, patchlevel and license\n"
3022 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3023 " -w enable many useful warnings\n"
3024 " -W enable all warnings\n"
3025 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3026 " -X disable all warnings\n"
3028 "Run 'perldoc perl' for more help with Perl.\n\n",
3031 const char * const *p = usage_msg;
3032 PerlIO *out = PerlIO_stdout();
3035 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3038 PerlIO_puts(out, *p++);
3042 /* convert a string of -D options (or digits) into an int.
3043 * sets *s to point to the char after the options */
3047 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3049 static const char * const usage_msgd[] = {
3050 " Debugging flag values: (see also -d)\n"
3051 " p Tokenizing and parsing (with v, displays parse stack)\n"
3052 " s Stack snapshots (with v, displays all stacks)\n"
3053 " l Context (loop) stack processing\n"
3054 " t Trace execution\n"
3055 " o Method and overloading resolution\n",
3056 " c String/numeric conversions\n"
3057 " P Print profiling info, source file input state\n"
3058 " m Memory and SV allocation\n"
3059 " f Format processing\n"
3060 " r Regular expression parsing and execution\n"
3061 " x Syntax tree dump\n",
3062 " u Tainting checks\n"
3063 " H Hash dump -- usurps values()\n"
3064 " X Scratchpad allocation\n"
3066 " S Op slab allocation\n"
3068 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3069 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3070 " v Verbose: use in conjunction with other flags\n"
3071 " C Copy On Write\n"
3072 " A Consistency checks on internal structures\n"
3073 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3074 " M trace smart match resolution\n"
3075 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3080 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3083 /* if adding extra options, remember to update DEBUG_MASK */
3084 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
3086 for (; isWORDCHAR(**s); (*s)++) {
3087 const char * const d = strchr(debopts,**s);
3089 i |= 1 << (d - debopts);
3090 else if (ckWARN_d(WARN_DEBUGGING))
3091 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3092 "invalid option -D%c, use -D'' to see choices\n", **s);
3095 else if (isDIGIT(**s)) {
3097 for (; isWORDCHAR(**s); (*s)++) ;
3099 else if (givehelp) {
3100 const char *const *p = usage_msgd;
3101 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3104 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3105 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3106 "-Dp not implemented on this platform\n");
3112 /* This routine handles any switches that can be given during run */
3115 Perl_moreswitches(pTHX_ const char *s)
3119 const char option = *s; /* used to remember option in -m/-M code */
3121 PERL_ARGS_ASSERT_MORESWITCHES;
3129 SvREFCNT_dec(PL_rs);
3130 if (s[1] == 'x' && s[2]) {
3131 const char *e = s+=2;
3137 flags = PERL_SCAN_SILENT_ILLDIGIT;
3138 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3139 if (s + numlen < e) {
3140 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3144 PL_rs = newSVpvs("");
3145 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3146 tmps = (U8*)SvPVX(PL_rs);
3147 uvchr_to_utf8(tmps, rschar);
3148 SvCUR_set(PL_rs, UNISKIP(rschar));
3153 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3154 if (rschar & ~((U8)~0))
3155 PL_rs = &PL_sv_undef;
3156 else if (!rschar && numlen >= 2)
3157 PL_rs = newSVpvs("");
3159 char ch = (char)rschar;
3160 PL_rs = newSVpvn(&ch, 1);
3163 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3168 PL_unicode = parse_unicode_opts( (const char **)&s );
3169 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3175 while (*s && !isSPACE(*s)) ++s;
3176 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3187 forbid_setid('d', FALSE);
3190 /* -dt indicates to the debugger that threads will be used */
3191 if (*s == 't' && !isWORDCHAR(s[1])) {
3193 my_setenv("PERL5DB_THREADED", "1");
3196 /* The following permits -d:Mod to accepts arguments following an =
3197 in the fashion that -MSome::Mod does. */
3198 if (*s == ':' || *s == '=') {
3205 sv = newSVpvs("no Devel::");
3207 sv = newSVpvs("use Devel::");
3211 end = s + strlen(s);
3213 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3214 while(isWORDCHAR(*s) || *s==':') ++s;
3216 sv_catpvn(sv, start, end - start);
3218 sv_catpvn(sv, start, s-start);
3219 /* Don't use NUL as q// delimiter here, this string goes in the
3221 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3224 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3228 PL_perldb = PERLDB_ALL;
3235 forbid_setid('D', FALSE);
3237 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3238 #else /* !DEBUGGING */
3239 if (ckWARN_d(WARN_DEBUGGING))
3240 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3241 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3242 for (s++; isWORDCHAR(*s); s++) ;
3249 Safefree(PL_inplace);
3250 #if defined(__CYGWIN__) /* do backup extension automagically */
3251 if (*(s+1) == '\0') {
3252 PL_inplace = savepvs(".bak");
3255 #endif /* __CYGWIN__ */
3257 const char * const start = ++s;
3258 while (*s && !isSPACE(*s))
3261 PL_inplace = savepvn(start, s - start);
3265 if (*s == '-') /* Additional switches on #! line. */
3269 case 'I': /* -I handled both here and in parse_body() */
3270 forbid_setid('I', FALSE);
3272 while (*s && isSPACE(*s))
3277 /* ignore trailing spaces (possibly followed by other switches) */
3279 for (e = p; *e && !isSPACE(*e); e++) ;
3283 } while (*p && *p != '-');
3285 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3291 Perl_croak(aTHX_ "No directory specified for -I");
3297 SvREFCNT_dec(PL_ors_sv);
3303 PL_ors_sv = newSVpvs("\n");
3304 numlen = 3 + (*s == '0');
3305 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3309 if (RsPARA(PL_rs)) {
3310 PL_ors_sv = newSVpvs("\n\n");
3313 PL_ors_sv = newSVsv(PL_rs);
3318 forbid_setid('M', FALSE); /* XXX ? */
3321 forbid_setid('m', FALSE); /* XXX ? */
3326 const char *use = "use ";
3328 /* -M-foo == 'no foo' */
3329 /* Leading space on " no " is deliberate, to make both
3330 possibilities the same length. */
3331 if (*s == '-') { use = " no "; ++s; }
3332 sv = newSVpvn(use,4);
3334 /* We allow -M'Module qw(Foo Bar)' */
3335 while(isWORDCHAR(*s) || *s==':') {
3344 Perl_croak(aTHX_ "Module name required with -%c option",
3347 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3348 "contains single ':'",
3349 (int)(s - start), start, option);
3350 end = s + strlen(s);
3352 sv_catpvn(sv, start, end - start);
3353 if (option == 'm') {
3355 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3356 sv_catpvs( sv, " ()");
3359 sv_catpvn(sv, start, s-start);
3360 /* Use NUL as q''-delimiter. */
3361 sv_catpvs(sv, " split(/,/,q\0");
3363 sv_catpvn(sv, s, end - s);
3364 sv_catpvs(sv, "\0)");
3367 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3370 Perl_croak(aTHX_ "Missing argument to -%c", option);
3381 forbid_setid('s', FALSE);
3382 PL_doswitches = TRUE;
3387 #if SILENT_NO_TAINT_SUPPORT
3388 /* silently ignore */
3389 #elif NO_TAINT_SUPPORT
3390 Perl_croak_nocontext("This perl was compiled without taint support. "
3391 "Cowardly refusing to run with -t or -T flags");
3399 PL_do_undump = TRUE;
3409 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3410 PL_dowarn |= G_WARN_ON;
3415 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3416 if (!specialWARN(PL_compiling.cop_warnings))
3417 PerlMemShared_free(PL_compiling.cop_warnings);
3418 PL_compiling.cop_warnings = pWARN_ALL ;
3422 PL_dowarn = G_WARN_ALL_OFF;
3423 if (!specialWARN(PL_compiling.cop_warnings))
3424 PerlMemShared_free(PL_compiling.cop_warnings);
3425 PL_compiling.cop_warnings = pWARN_NONE ;
3432 if (s[0] == '-') /* Additional switches on #! line. */
3437 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3443 #ifdef ALTERNATE_SHEBANG
3444 case 'S': /* OS/2 needs -S on "extproc" line. */
3447 case 'e': case 'f': case 'x': case 'E':
3448 #ifndef ALTERNATE_SHEBANG
3452 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3455 "Unrecognized switch: -%.1s (-h will show valid options)",s
3465 PerlIO * PIO_stdout;
3466 if (!sv_derived_from(PL_patchlevel, "version"))
3467 upg_version(PL_patchlevel, TRUE);
3469 SV* level= vstringify(PL_patchlevel);
3470 #ifdef PERL_PATCHNUM
3471 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3472 SV *num = newSVpvs(PERL_PATCHNUM "*");
3474 SV *num = newSVpvs(PERL_PATCHNUM);
3477 STRLEN level_len, num_len;
3478 char * level_str, * num_str;
3479 num_str = SvPV(num, num_len);
3480 level_str = SvPV(level, level_len);
3481 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3482 SvREFCNT_dec(level);
3485 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3490 PIO_stdout = PerlIO_stdout();
3491 PerlIO_printf(PIO_stdout,
3492 "\nThis is perl " STRINGIFY(PERL_REVISION)
3493 ", version " STRINGIFY(PERL_VERSION)
3494 ", subversion " STRINGIFY(PERL_SUBVERSION)
3495 " (%"SVf") built for " ARCHNAME, level
3497 SvREFCNT_dec(level);
3499 #if defined(LOCAL_PATCH_COUNT)
3500 if (LOCAL_PATCH_COUNT > 0)
3501 PerlIO_printf(PIO_stdout,
3502 "\n(with %d registered patch%s, "
3503 "see perl -V for more detail)",
3505 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3508 PerlIO_printf(PIO_stdout,
3509 "\n\nCopyright 1987-2013, Larry Wall\n");
3511 PerlIO_printf(PIO_stdout,
3512 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3515 PerlIO_printf(PIO_stdout,
3516 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3517 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3520 PerlIO_printf(PIO_stdout,
3521 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3522 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3525 PerlIO_printf(PIO_stdout,
3526 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3529 PerlIO_printf(PIO_stdout,
3530 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3533 PerlIO_printf(PIO_stdout,
3534 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3537 PerlIO_printf(PIO_stdout,
3538 "WINCE port by Rainer Keuchel, 2001-2002\n"
3539 "Built on " __DATE__ " " __TIME__ "\n\n");
3542 #ifdef __SYMBIAN32__
3543 PerlIO_printf(PIO_stdout,
3544 "Symbian port by Nokia, 2004-2005\n");
3546 #ifdef BINARY_BUILD_NOTICE
3547 BINARY_BUILD_NOTICE;
3549 PerlIO_printf(PIO_stdout,
3551 Perl may be copied only under the terms of either the Artistic License or the\n\
3552 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3553 Complete documentation for Perl, including FAQ lists, should be found on\n\
3554 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3555 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3559 /* compliments of Tom Christiansen */
3561 /* unexec() can be found in the Gnu emacs distribution */
3562 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3565 #include <lib$routines.h>
3569 Perl_my_unexec(pTHX)
3571 PERL_UNUSED_CONTEXT;
3573 SV * prog = newSVpv(BIN_EXP, 0);
3574 SV * file = newSVpv(PL_origfilename, 0);
3578 sv_catpvs(prog, "/perl");
3579 sv_catpvs(file, ".perldump");
3581 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3582 /* unexec prints msg to stderr in case of failure */
3583 PerlProc_exit(status);
3586 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3587 # elif defined(WIN32) || defined(__CYGWIN__)
3588 Perl_croak(aTHX_ "dump is not supported");
3590 ABORT(); /* for use with undump */
3595 /* initialize curinterp */
3601 # define PERLVAR(prefix,var,type)
3602 # define PERLVARA(prefix,var,n,type)
3603 # if defined(PERL_IMPLICIT_CONTEXT)
3604 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3605 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3607 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3608 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3610 # include "intrpvar.h"
3616 # define PERLVAR(prefix,var,type)
3617 # define PERLVARA(prefix,var,n,type)
3618 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3619 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3620 # include "intrpvar.h"
3630 S_init_main_stash(pTHX)
3635 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3636 /* We know that the string "main" will be in the global shared string
3637 table, so it's a small saving to use it rather than allocate another
3639 PL_curstname = newSVpvs_share("main");
3640 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3641 /* If we hadn't caused another reference to "main" to be in the shared
3642 string table above, then it would be worth reordering these two,
3643 because otherwise all we do is delete "main" from it as a consequence
3644 of the SvREFCNT_dec, only to add it again with hv_name_set */
3645 SvREFCNT_dec(GvHV(gv));
3646 hv_name_set(PL_defstash, "main", 4, 0);
3647 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3649 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3651 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3652 GvMULTI_on(PL_incgv);
3653 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3654 GvMULTI_on(PL_hintgv);
3655 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3656 SvREFCNT_inc_simple_void(PL_defgv);
3657 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3658 SvREFCNT_inc_simple_void(PL_errgv);
3659 GvMULTI_on(PL_errgv);
3660 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3661 GvMULTI_on(PL_replgv);
3662 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3663 #ifdef PERL_DONT_CREATE_GVSV
3666 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3668 SET_CURSTASH(PL_defstash);
3669 CopSTASH_set(&PL_compiling, PL_defstash);
3670 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3671 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3673 /* We must init $/ before switches are processed. */
3674 sv_setpvs(get_sv("/", GV_ADD), "\n");
3678 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3681 PerlIO *rsfp = NULL;
3685 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3688 PL_origfilename = savepvs("-e");
3691 /* if find_script() returns, it returns a malloc()-ed value */
3692 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3694 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3695 const char *s = scriptname + 8;
3701 * Tell apart "normal" usage of fdscript, e.g.
3702 * with bash on FreeBSD:
3703 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3704 * from usage in suidperl.
3705 * Does any "normal" usage leave garbage after the number???
3706 * Is it a mistake to use a similar /dev/fd/ construct for
3711 * Be supersafe and do some sanity-checks.
3712 * Still, can we be sure we got the right thing?
3715 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3718 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3720 scriptname = savepv(s + 1);
3721 Safefree(PL_origfilename);
3722 PL_origfilename = (char *)scriptname;
3727 CopFILE_free(PL_curcop);
3728 CopFILE_set(PL_curcop, PL_origfilename);
3729 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3730 scriptname = (char *)"";
3731 if (fdscript >= 0) {
3732 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3734 else if (!*scriptname) {
3735 forbid_setid(0, *suidscript);
3739 #ifdef FAKE_BIT_BUCKET
3740 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3741 * is called) and still have the "-e" work. (Believe it or not,
3742 * a /dev/null is required for the "-e" to work because source
3743 * filter magic is used to implement it. ) This is *not* a general
3744 * replacement for a /dev/null. What we do here is create a temp
3745 * file (an empty file), open up that as the script, and then
3746 * immediately close and unlink it. Close enough for jazz. */
3747 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3748 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3749 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3750 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3751 FAKE_BIT_BUCKET_TEMPLATE
3753 const char * const err = "Failed to create a fake bit bucket";
3754 if (strEQ(scriptname, BIT_BUCKET)) {
3755 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3756 int tmpfd = mkstemp(tmpname);
3758 scriptname = tmpname;
3761 Perl_croak(aTHX_ err);
3764 scriptname = mktemp(tmpname);
3766 Perl_croak(aTHX_ err);
3771 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3772 #ifdef FAKE_BIT_BUCKET
3773 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3774 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3775 && strlen(scriptname) == sizeof(tmpname) - 1) {
3778 scriptname = BIT_BUCKET;
3782 /* PSz 16 Sep 03 Keep neat error message */
3784 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3786 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3787 CopFILE(PL_curcop), Strerror(errno));
3789 #if defined(HAS_FCNTL) && defined(F_SETFD)
3790 /* ensure close-on-exec */
3791 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3794 if (PerlLIO_fstat(PerlIO_fileno(rsfp), &tmpstatbuf) >= 0
3795 && S_ISDIR(tmpstatbuf.st_mode))
3796 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3804 * I_SYSSTATVFS HAS_FSTATVFS
3806 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3807 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3808 * here so that metaconfig picks them up. */
3811 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3812 /* Don't even need this function. */
3815 S_validate_suid(pTHX_ PerlIO *rsfp)
3817 const Uid_t my_uid = PerlProc_getuid();
3818 const Uid_t my_euid = PerlProc_geteuid();
3819 const Gid_t my_gid = PerlProc_getgid();
3820 const Gid_t my_egid = PerlProc_getegid();
3822 PERL_ARGS_ASSERT_VALIDATE_SUID;
3824 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3827 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3828 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3830 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3833 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3834 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3835 /* not set-id, must be wrapped */
3838 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3841 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3847 PERL_ARGS_ASSERT_FIND_BEGINNING;
3849 /* skip forward in input to the real script? */
3852 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3853 Perl_croak(aTHX_ "No Perl script found in input\n");
3855 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3856 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3857 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3859 while (*s == ' ' || *s == '\t') s++;
3861 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3862 || s2[-1] == '_') s2--;
3863 if (strnEQ(s2-4,"perl",4))
3864 while ((s = moreswitches(s)))
3873 /* no need to do anything here any more if we don't
3875 #if !NO_TAINT_SUPPORT
3877 const Uid_t my_uid = PerlProc_getuid();
3878 const Uid_t my_euid = PerlProc_geteuid();
3879 const Gid_t my_gid = PerlProc_getgid();
3880 const Gid_t my_egid = PerlProc_getegid();
3882 /* Should not happen: */
3883 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3884 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3888 * Should go by suidscript, not uid!=euid: why disallow
3889 * system("ls") in scripts run from setuid things?
3890 * Or, is this run before we check arguments and set suidscript?
3891 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3892 * (We never have suidscript, can we be sure to have fdscript?)
3893 * Or must then go by UID checks? See comments in forbid_setid also.
3897 /* This is used very early in the lifetime of the program,
3898 * before even the options are parsed, so PL_tainting has
3899 * not been initialized properly. */
3901 Perl_doing_taint(int argc, char *argv[], char *envp[])
3903 #ifndef PERL_IMPLICIT_SYS
3904 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3905 * before we have an interpreter-- and the whole point of this
3906 * function is to be called at such an early stage. If you are on
3907 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3908 * "tainted because running with altered effective ids', you'll
3909 * have to add your own checks somewhere in here. The two most
3910 * known samples of 'implicitness' are Win32 and NetWare, neither
3911 * of which has much of concept of 'uids'. */
3912 Uid_t uid = PerlProc_getuid();
3913 Uid_t euid = PerlProc_geteuid();
3914 Gid_t gid = PerlProc_getgid();
3915 Gid_t egid = PerlProc_getegid();
3922 if (uid && (euid != uid || egid != gid))
3924 #endif /* !PERL_IMPLICIT_SYS */
3925 /* This is a really primitive check; environment gets ignored only
3926 * if -T are the first chars together; otherwise one gets
3927 * "Too late" message. */
3928 if ( argc > 1 && argv[1][0] == '-'
3929 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3934 /* Passing the flag as a single char rather than a string is a slight space
3935 optimisation. The only message that isn't /^-.$/ is
3936 "program input from stdin", which is substituted in place of '\0', which
3937 could never be a command line flag. */
3939 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3942 char string[3] = "-x";
3943 const char *message = "program input from stdin";
3950 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3951 if (PerlProc_getuid() != PerlProc_geteuid())
3952 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3953 if (PerlProc_getgid() != PerlProc_getegid())
3954 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3955 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3957 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3961 Perl_init_dbargs(pTHX)
3963 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3968 /* Someone has already created it.
3969 It might have entries, and if we just turn off AvREAL(), they will
3970 "leak" until global destruction. */
3972 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3973 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3975 AvREIFY_only(PL_dbargs);
3979 Perl_init_debugger(pTHX)
3982 HV * const ostash = PL_curstash;
3984 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3986 Perl_init_dbargs(aTHX);
3987 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3988 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3989 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3990 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3991 if (!SvIOK(PL_DBsingle))
3992 sv_setiv(PL_DBsingle, 0);
3993 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3994 if (!SvIOK(PL_DBtrace))
3995 sv_setiv(PL_DBtrace, 0);
3996 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3997 if (!SvIOK(PL_DBsignal))
3998 sv_setiv(PL_DBsignal, 0);
3999 SvREFCNT_dec(PL_curstash);
4000 PL_curstash = ostash;
4003 #ifndef STRESS_REALLOC
4004 #define REASONABLE(size) (size)
4006 #define REASONABLE(size) (1) /* unreasonable */
4010 Perl_init_stacks(pTHX)
4013 /* start with 128-item stack and 8K cxstack */
4014 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4015 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4016 PL_curstackinfo->si_type = PERLSI_MAIN;
4017 PL_curstack = PL_curstackinfo->si_stack;
4018 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4020 PL_stack_base = AvARRAY(PL_curstack);
4021 PL_stack_sp = PL_stack_base;
4022 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4024 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4027 PL_tmps_max = REASONABLE(128);
4029 Newx(PL_markstack,REASONABLE(32),I32);
4030 PL_markstack_ptr = PL_markstack;
4031 PL_markstack_max = PL_markstack + REASONABLE(32);
4035 Newx(PL_scopestack,REASONABLE(32),I32);
4037 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4039 PL_scopestack_ix = 0;
4040 PL_scopestack_max = REASONABLE(32);
4042 Newx(PL_savestack,REASONABLE(128),ANY);
4043 PL_savestack_ix = 0;
4044 PL_savestack_max = REASONABLE(128);
4053 while (PL_curstackinfo->si_next)
4054 PL_curstackinfo = PL_curstackinfo->si_next;
4055 while (PL_curstackinfo) {
4056 PERL_SI *p = PL_curstackinfo->si_prev;
4057 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4058 Safefree(PL_curstackinfo->si_cxstack);
4059 Safefree(PL_curstackinfo);
4060 PL_curstackinfo = p;
4062 Safefree(PL_tmps_stack);
4063 Safefree(PL_markstack);
4064 Safefree(PL_scopestack);
4066 Safefree(PL_scopestack_name);
4068 Safefree(PL_savestack);
4072 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4074 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4075 AV *const isa = GvAVn(gv);
4078 PERL_ARGS_ASSERT_POPULATE_ISA;
4080 if(AvFILLp(isa) != -1)
4083 /* NOTE: No support for tied ISA */
4085 va_start(args, len);
4087 const char *const parent = va_arg(args, const char*);
4092 parent_len = va_arg(args, size_t);
4094 /* Arguments are supplied with a trailing :: */
4095 assert(parent_len > 2);
4096 assert(parent[parent_len - 1] == ':');
4097 assert(parent[parent_len - 2] == ':');
4098 av_push(isa, newSVpvn(parent, parent_len - 2));
4099 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4106 S_init_predump_symbols(pTHX)
4112 sv_setpvs(get_sv("\"", GV_ADD), " ");
4113 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4116 /* Historically, PVIOs were blessed into IO::Handle, unless
4117 FileHandle was loaded, in which case they were blessed into
4118 that. Action at a distance.
4119 However, if we simply bless into IO::Handle, we break code
4120 that assumes that PVIOs will have (among others) a seek
4121 method. IO::File inherits from IO::Handle and IO::Seekable,
4122 and provides the needed methods. But if we simply bless into
4123 it, then we break code that assumed that by loading
4124 IO::Handle, *it* would work.
4125 So a compromise is to set up the correct @IO::File::ISA,
4126 so that code that does C<use IO::Handle>; will still work.
4129 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4130 STR_WITH_LEN("IO::Handle::"),
4131 STR_WITH_LEN("IO::Seekable::"),
4132 STR_WITH_LEN("Exporter::"),
4135 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4136 GvMULTI_on(PL_stdingv);
4137 io = GvIOp(PL_stdingv);
4138 IoTYPE(io) = IoTYPE_RDONLY;
4139 IoIFP(io) = PerlIO_stdin();
4140 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4142 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4144 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4147 IoTYPE(io) = IoTYPE_WRONLY;
4148 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4150 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4152 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4154 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4155 GvMULTI_on(PL_stderrgv);
4156 io = GvIOp(PL_stderrgv);
4157 IoTYPE(io) = IoTYPE_WRONLY;
4158 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4159 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4161 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4163 PL_statname = newSVpvs(""); /* last filename we did stat on */
4167 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4171 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4173 argc--,argv++; /* skip name of script */
4174 if (PL_doswitches) {
4175 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4179 if (argv[0][1] == '-' && !argv[0][2]) {
4183 if ((s = strchr(argv[0], '='))) {
4184 const char *const start_name = argv[0] + 1;
4185 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4186 TRUE, SVt_PV)), s + 1);
4189 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4192 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4193 GvMULTI_on(PL_argvgv);
4194 (void)gv_AVadd(PL_argvgv);
4195 av_clear(GvAVn(PL_argvgv));
4196 for (; argc > 0; argc--,argv++) {
4197 SV * const sv = newSVpv(argv[0],0);
4198 av_push(GvAVn(PL_argvgv),sv);
4199 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4200 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4203 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4204 (void)sv_utf8_decode(sv);
4208 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4209 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4210 "-i used with no filenames on the command line, "
4211 "reading from STDIN");
4215 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4220 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4222 PL_toptarget = newSV_type(SVt_PVIV);
4223 sv_setpvs(PL_toptarget, "");
4224 PL_bodytarget = newSV_type(SVt_PVIV);
4225 sv_setpvs(PL_bodytarget, "");
4226 PL_formtarget = PL_bodytarget;
4230 init_argv_symbols(argc,argv);
4232 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4233 sv_setpv(GvSV(tmpgv),PL_origfilename);
4235 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4237 bool env_is_not_environ;
4238 GvMULTI_on(PL_envgv);
4239 hv = GvHVn(PL_envgv);
4240 hv_magic(hv, NULL, PERL_MAGIC_env);
4242 #ifdef USE_ENVIRON_ARRAY
4243 /* Note that if the supplied env parameter is actually a copy
4244 of the global environ then it may now point to free'd memory
4245 if the environment has been modified since. To avoid this
4246 problem we treat env==NULL as meaning 'use the default'
4250 env_is_not_environ = env != environ;
4251 if (env_is_not_environ
4252 # ifdef USE_ITHREADS
4253 && PL_curinterp == aTHX
4262 for (; *env; env++) {
4265 if (!(s = strchr(old_var,'=')) || s == old_var)
4268 #if defined(MSDOS) && !defined(DJGPP)
4270 (void)strupr(old_var);
4273 sv = newSVpv(s+1, 0);
4274 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4275 if (env_is_not_environ)
4279 #endif /* USE_ENVIRON_ARRAY */
4280 #endif /* !PERL_MICRO */
4284 /* touch @F array to prevent spurious warnings 20020415 MJD */
4286 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4291 S_init_perllib(pTHX)
4295 const char *perl5lib = NULL;
4298 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4302 if (!TAINTING_get) {
4304 perl5lib = PerlEnv_getenv("PERL5LIB");
4306 * It isn't possible to delete an environment variable with
4307 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4308 * case we treat PERL5LIB as undefined if it has a zero-length value.
4310 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4311 if (perl5lib && *perl5lib != '\0')
4315 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4317 s = PerlEnv_getenv("PERLLIB");
4319 incpush_use_sep(s, 0, 0);
4322 /* Treat PERL5?LIB as a possible search list logical name -- the
4323 * "natural" VMS idiom for a Unix path string. We allow each
4324 * element to be a set of |-separated directories for compatibility.
4328 if (my_trnlnm("PERL5LIB",buf,0))
4330 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4331 } while (my_trnlnm("PERL5LIB",buf,++idx));
4333 while (my_trnlnm("PERLLIB",buf,idx++))
4334 incpush_use_sep(buf, 0, 0);
4339 #ifndef PERL_IS_MINIPERL
4340 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4341 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4343 /* Use the ~-expanded versions of APPLLIB (undocumented),
4344 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4347 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4348 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4352 /* sitearch is always relative to sitelib on Windows for
4353 * DLL-based path intuition to work correctly */
4354 # if !defined(WIN32)
4355 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4356 INCPUSH_CAN_RELOCATE);
4362 /* this picks up sitearch as well */
4363 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4365 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4367 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4371 #ifdef PERL_VENDORARCH_EXP
4372 /* vendorarch is always relative to vendorlib on Windows for
4373 * DLL-based path intuition to work correctly */
4374 # if !defined(WIN32)
4375 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4376 INCPUSH_CAN_RELOCATE);
4380 #ifdef PERL_VENDORLIB_EXP
4382 /* this picks up vendorarch as well */
4383 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4385 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4387 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4388 INCPUSH_CAN_RELOCATE);
4393 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4397 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4401 s = win32_get_privlib(PERL_FS_VERSION, &len);
4403 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4406 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4408 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4412 #ifdef PERL_OTHERLIBDIRS
4413 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4414 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4415 |INCPUSH_CAN_RELOCATE);
4418 if (!TAINTING_get) {
4421 * It isn't possible to delete an environment variable with
4422 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4423 * case we treat PERL5LIB as undefined if it has a zero-length value.
4425 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4426 if (perl5lib && *perl5lib != '\0')
4430 incpush_use_sep(perl5lib, 0,
4431 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4433 /* Treat PERL5?LIB as a possible search list logical name -- the
4434 * "natural" VMS idiom for a Unix path string. We allow each
4435 * element to be a set of |-separated directories for compatibility.
4439 if (my_trnlnm("PERL5LIB",buf,0))
4441 incpush_use_sep(buf, 0,
4442 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4443 } while (my_trnlnm("PERL5LIB",buf,++idx));
4447 /* Use the ~-expanded versions of APPLLIB (undocumented),
4448 SITELIB and VENDORLIB for older versions
4451 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4452 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4455 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4456 /* Search for version-specific dirs below here */
4457 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4458 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4462 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4463 /* Search for version-specific dirs below here */
4464 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4465 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4468 #ifdef PERL_OTHERLIBDIRS
4469 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4470 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4471 |INCPUSH_CAN_RELOCATE);
4473 #endif /* !PERL_IS_MINIPERL */
4476 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4479 #if defined(DOSISH) || defined(__SYMBIAN32__)
4480 # define PERLLIB_SEP ';'
4483 # define PERLLIB_SEP '|'
4485 # define PERLLIB_SEP ':'
4488 #ifndef PERLLIB_MANGLE
4489 # define PERLLIB_MANGLE(s,n) (s)
4492 #ifndef PERL_IS_MINIPERL
4493 /* Push a directory onto @INC if it exists.
4494 Generate a new SV if we do this, to save needing to copy the SV we push
4497 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4502 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4504 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4505 S_ISDIR(tmpstatbuf.st_mode)) {
4507 dir = newSVsv(stem);
4509 /* Truncate dir back to stem. */
4510 SvCUR_set(dir, SvCUR(stem));
4517 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4519 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4522 PERL_ARGS_ASSERT_MAYBERELOCATE;
4525 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4526 defined to so something (in os2/os2.c), but the code has been
4527 this way, ignoring any possible changed of length, since
4528 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4530 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4536 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4538 while (unix[len-1] == '/') len--; /* Cosmetic */
4539 sv_usepvn(libdir,unix,len);
4542 PerlIO_printf(Perl_error_log,
4543 "Failed to unixify @INC element \"%s\"\n",
4544 SvPV_nolen_const(libdir));
4548 /* Do the if() outside the #ifdef to avoid warnings about an unused
4551 #ifdef PERL_RELOCATABLE_INC
4553 * Relocatable include entries are marked with a leading .../
4556 * 0: Remove that leading ".../"
4557 * 1: Remove trailing executable name (anything after the last '/')
4558 * from the perl path to give a perl prefix
4560 * While the @INC element starts "../" and the prefix ends with a real
4561 * directory (ie not . or ..) chop that real directory off the prefix
4562 * and the leading "../" from the @INC element. ie a logical "../"
4564 * Finally concatenate the prefix and the remainder of the @INC element
4565 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4566 * generates /usr/local/lib/perl5
4568 const char *libpath = SvPVX(libdir);
4569 STRLEN libpath_len = SvCUR(libdir);
4570 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4572 SV * const caret_X = get_sv("\030", 0);
4573 /* Going to use the SV just as a scratch buffer holding a C
4579 /* $^X is *the* source of taint if tainting is on, hence
4580 SvPOK() won't be true. */
4582 assert(SvPOKp(caret_X));
4583 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4585 /* Firstly take off the leading .../
4586 If all else fail we'll do the paths relative to the current
4588 sv_chop(libdir, libpath + 4);
4589 /* Don't use SvPV as we're intentionally bypassing taining,
4590 mortal copies that the mg_get of tainting creates, and
4591 corruption that seems to come via the save stack.
4592 I guess that the save stack isn't correctly set up yet. */
4593 libpath = SvPVX(libdir);
4594 libpath_len = SvCUR(libdir);
4596 /* This would work more efficiently with memrchr, but as it's
4597 only a GNU extension we'd need to probe for it and
4598 implement our own. Not hard, but maybe not worth it? */
4600 prefix = SvPVX(prefix_sv);
4601 lastslash = strrchr(prefix, '/');
4603 /* First time in with the *lastslash = '\0' we just wipe off
4604 the trailing /perl from (say) /usr/foo/bin/perl
4608 while ((*lastslash = '\0'), /* Do that, come what may. */
4609 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4610 && (lastslash = strrchr(prefix, '/')))) {
4611 if (lastslash[1] == '\0'
4612 || (lastslash[1] == '.'
4613 && (lastslash[2] == '/' /* ends "/." */
4614 || (lastslash[2] == '/'
4615 && lastslash[3] == '/' /* or "/.." */
4617 /* Prefix ends "/" or "/." or "/..", any of which
4618 are fishy, so don't do any more logical cleanup.
4622 /* Remove leading "../" from path */
4625 /* Next iteration round the loop removes the last
4626 directory name from prefix by writing a '\0' in
4627 the while clause. */
4629 /* prefix has been terminated with a '\0' to the correct
4630 length. libpath points somewhere into the libdir SV.
4631 We need to join the 2 with '/' and drop the result into
4633 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4634 SvREFCNT_dec(libdir);
4635 /* And this is the new libdir. */
4638 (PerlProc_getuid() != PerlProc_geteuid() ||
4639 PerlProc_getgid() != PerlProc_getegid())) {
4640 /* Need to taint relocated paths if running set ID */
4641 SvTAINTED_on(libdir);
4644 SvREFCNT_dec(prefix_sv);
4652 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4655 #ifndef PERL_IS_MINIPERL
4656 const U8 using_sub_dirs
4657 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4658 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4659 const U8 add_versioned_sub_dirs
4660 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4661 const U8 add_archonly_sub_dirs
4662 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4663 #ifdef PERL_INC_VERSION_LIST
4664 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4667 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4668 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4669 AV *const inc = GvAVn(PL_incgv);
4671 PERL_ARGS_ASSERT_INCPUSH;
4674 /* Could remove this vestigial extra block, if we don't mind a lot of
4675 re-indenting diff noise. */
4677 SV *const libdir = mayberelocate(dir, len, flags);
4678 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4679 arranged to unshift #! line -I onto the front of @INC. However,
4680 -I can add version and architecture specific libraries, and they
4681 need to go first. The old code assumed that it was always
4682 pushing. Hence to make it work, need to push the architecture
4683 (etc) libraries onto a temporary array, then "unshift" that onto
4684 the front of @INC. */
4685 #ifndef PERL_IS_MINIPERL
4686 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4689 * BEFORE pushing libdir onto @INC we may first push version- and
4690 * archname-specific sub-directories.
4692 if (using_sub_dirs) {
4693 SV *subdir = newSVsv(libdir);
4694 #ifdef PERL_INC_VERSION_LIST
4695 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4696 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4697 const char * const *incver;
4700 if (add_versioned_sub_dirs) {
4701 /* .../version/archname if -d .../version/archname */
4702 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4703 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4705 /* .../version if -d .../version */
4706 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4707 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4710 #ifdef PERL_INC_VERSION_LIST
4712 for (incver = incverlist; *incver; incver++) {
4713 /* .../xxx if -d .../xxx */
4714 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4715 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4720 if (add_archonly_sub_dirs) {
4721 /* .../archname if -d .../archname */
4722 sv_catpvs(subdir, "/" ARCHNAME);
4723 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4727 assert (SvREFCNT(subdir) == 1);
4728 SvREFCNT_dec(subdir);
4730 #endif /* !PERL_IS_MINIPERL */
4731 /* finally add this lib directory at the end of @INC */
4733 #ifdef PERL_IS_MINIPERL
4734 const U32 extra = 0;
4736 U32 extra = av_len(av) + 1;
4738 av_unshift(inc, extra + push_basedir);
4740 av_store(inc, extra, libdir);
4741 #ifndef PERL_IS_MINIPERL
4743 /* av owns a reference, av_store() expects to be donated a
4744 reference, and av expects to be sane when it's cleared.
4745 If I wanted to be naughty and wrong, I could peek inside the
4746 implementation of av_clear(), realise that it uses
4747 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4748 and so directly steal from it (with a memcpy() to inc, and
4749 then memset() to NULL them out. But people copy code from the
4750 core expecting it to be best practise, so let's use the API.
4751 Although studious readers will note that I'm not checking any
4753 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4758 else if (push_basedir) {
4759 av_push(inc, libdir);
4762 if (!push_basedir) {
4763 assert (SvREFCNT(libdir) == 1);
4764 SvREFCNT_dec(libdir);
4770 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4774 /* This logic has been broken out from S_incpush(). It may be possible to
4777 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4779 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4780 * argument to incpush_use_sep. This allows creation of relocatable
4781 * Perl distributions that patch the binary at install time. Those
4782 * distributions will have to provide their own relocation tools; this
4783 * is not a feature otherwise supported by core Perl.
4785 #ifndef PERL_RELOCATABLE_INCPUSH
4792 /* Break at all separators */
4793 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4795 /* skip any consecutive separators */
4797 /* Uncomment the next line for PATH semantics */
4798 /* But you'll need to write tests */
4799 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4801 incpush(p, (STRLEN)(s - p), flags);
4806 incpush(p, (STRLEN)(end - p), flags);
4811 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4815 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4821 PERL_ARGS_ASSERT_CALL_LIST;
4823 while (av_len(paramList) >= 0) {
4824 cv = MUTABLE_CV(av_shift(paramList));
4826 if (paramList == PL_beginav) {
4827 /* save PL_beginav for compiler */
4828 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4830 else if (paramList == PL_checkav) {
4831 /* save PL_checkav for compiler */
4832 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4834 else if (paramList == PL_unitcheckav) {
4835 /* save PL_unitcheckav for compiler */
4836 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4847 PL_madskills |= 16384;
4852 PL_madskills &= ~16384;
4855 (void)SvPV_const(atsv, len);
4857 PL_curcop = &PL_compiling;
4858 CopLINE_set(PL_curcop, oldline);
4859 if (paramList == PL_beginav)
4860 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4862 Perl_sv_catpvf(aTHX_ atsv,
4863 "%s failed--call queue aborted",
4864 paramList == PL_checkav ? "CHECK"
4865 : paramList == PL_initav ? "INIT"
4866 : paramList == PL_unitcheckav ? "UNITCHECK"
4868 while (PL_scopestack_ix > oldscope)
4871 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4878 /* my_exit() was called */
4879 while (PL_scopestack_ix > oldscope)
4882 SET_CURSTASH(PL_defstash);
4883 PL_curcop = &PL_compiling;
4884 CopLINE_set(PL_curcop, oldline);
4887 assert(0); /* NOTREACHED */
4890 PL_curcop = &PL_compiling;
4891 CopLINE_set(PL_curcop, oldline);
4894 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4903 Perl_my_exit(pTHX_ U32 status)
4914 STATUS_EXIT_SET(status);
4921 Perl_my_failure_exit(pTHX)
4925 /* We have been called to fall on our sword. The desired exit code
4926 * should be already set in STATUS_UNIX, but could be shifted over
4927 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4930 * If an error code has not been set, then force the issue.
4932 if (MY_POSIX_EXIT) {
4934 /* According to the die_exit.t tests, if errno is non-zero */
4935 /* It should be used for the error status. */
4937 if (errno == EVMSERR) {
4938 STATUS_NATIVE = vaxc$errno;
4941 /* According to die_exit.t tests, if the child_exit code is */
4942 /* also zero, then we need to exit with a code of 255 */
4943 if ((errno != 0) && (errno < 256))
4944 STATUS_UNIX_EXIT_SET(errno);
4945 else if (STATUS_UNIX < 255) {
4946 STATUS_UNIX_EXIT_SET(255);
4951 /* The exit code could have been set by $? or vmsish which
4952 * means that it may not have fatal set. So convert
4953 * success/warning codes to fatal with out changing
4954 * the POSIX status code. The severity makes VMS native
4955 * status handling work, while UNIX mode programs use the
4956 * the POSIX exit codes.
4958 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4959 STATUS_NATIVE &= STS$M_COND_ID;
4960 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4964 /* Traditionally Perl on VMS always expects a Fatal Error. */
4965 if (vaxc$errno & 1) {
4967 /* So force success status to failure */
4968 if (STATUS_NATIVE & 1)
4973 STATUS_UNIX = EINTR; /* In case something cares */
4978 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4980 /* Encode the severity code */
4981 severity = STATUS_NATIVE & STS$M_SEVERITY;
4982 STATUS_UNIX = (severity ? severity : 1) << 8;
4984 /* Perl expects this to be a fatal error */
4985 if (severity != STS$K_SEVERE)
4994 STATUS_UNIX_SET(errno);
4996 exitstatus = STATUS_UNIX >> 8;
4997 if (exitstatus & 255)
4998 STATUS_UNIX_SET(exitstatus);
5000 STATUS_UNIX_SET(255);
5007 S_my_exit_jump(pTHX)
5012 SvREFCNT_dec(PL_e_script);
5016 POPSTACK_TO(PL_mainstack);
5024 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5027 const char * const p = SvPVX_const(PL_e_script);
5028 const char *nl = strchr(p, '\n');
5030 PERL_UNUSED_ARG(idx);
5031 PERL_UNUSED_ARG(maxlen);
5033 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5035 filter_del(read_e_script);
5038 sv_catpvn(buf_sv, p, nl-p);
5039 sv_chop(PL_e_script, nl);
5045 * c-indentation-style: bsd
5047 * indent-tabs-mode: nil
5050 * ex: set ts=8 sts=4 sw=4 et: