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);
761 if (PL_sv_objcount) {
763 * Try to destruct global references. We do this first so that the
764 * destructors and destructees still exist. Some sv's might remain.
765 * Non-referenced objects are on their own.
771 /* unhook hooks which will soon be, or use, destroyed data */
772 SvREFCNT_dec(PL_warnhook);
774 SvREFCNT_dec(PL_diehook);
777 /* call exit list functions */
778 while (PL_exitlistlen-- > 0)
779 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
781 Safefree(PL_exitlist);
786 SvREFCNT_dec(PL_registered_mros);
788 /* jettison our possibly duplicated environment */
789 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
790 * so we certainly shouldn't free it here
793 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
794 if (environ != PL_origenviron && !PL_use_safe_putenv
796 /* only main thread can free environ[0] contents */
797 && PL_curinterp == aTHX
803 for (i = 0; environ[i]; i++)
804 safesysfree(environ[i]);
806 /* Must use safesysfree() when working with environ. */
807 safesysfree(environ);
809 environ = PL_origenviron;
812 #endif /* !PERL_MICRO */
814 if (destruct_level == 0) {
816 DEBUG_P(debprofdump());
818 #if defined(PERLIO_LAYERS)
819 /* No more IO - including error messages ! */
820 PerlIO_cleanup(aTHX);
823 CopFILE_free(&PL_compiling);
825 /* The exit() function will do everything that needs doing. */
830 /* the syntax tree is shared between clones
831 * so op_free(PL_main_root) only ReREFCNT_dec's
832 * REGEXPs in the parent interpreter
833 * we need to manually ReREFCNT_dec for the clones
836 I32 i = AvFILLp(PL_regex_padav);
837 SV **ary = AvARRAY(PL_regex_padav);
840 SvREFCNT_dec(ary[i]);
841 ary[i] = &PL_sv_undef;
847 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
848 PL_stashcache = NULL;
850 /* loosen bonds of global variables */
852 /* XXX can PL_parser still be non-null here? */
853 if(PL_parser && PL_parser->rsfp) {
854 (void)PerlIO_close(PL_parser->rsfp);
855 PL_parser->rsfp = NULL;
859 Safefree(PL_splitstr);
869 PL_doswitches = FALSE;
870 PL_dowarn = G_WARN_OFF;
871 #ifdef PERL_SAWAMPERSAND
872 PL_sawampersand = 0; /* must save all match strings */
876 Safefree(PL_inplace);
878 SvREFCNT_dec(PL_patchlevel);
879 SvREFCNT_dec(PL_apiversion);
882 SvREFCNT_dec(PL_e_script);
888 /* magical thingies */
890 SvREFCNT_dec(PL_ofsgv); /* *, */
893 SvREFCNT_dec(PL_ors_sv); /* $\ */
896 SvREFCNT_dec(PL_rs); /* $/ */
899 Safefree(PL_osname); /* $^O */
902 SvREFCNT_dec(PL_statname);
906 /* defgv, aka *_ should be taken care of elsewhere */
909 Safefree(PL_efloatbuf);
913 /* startup and shutdown function lists */
914 SvREFCNT_dec(PL_beginav);
915 SvREFCNT_dec(PL_beginav_save);
916 SvREFCNT_dec(PL_endav);
917 SvREFCNT_dec(PL_checkav);
918 SvREFCNT_dec(PL_checkav_save);
919 SvREFCNT_dec(PL_unitcheckav);
920 SvREFCNT_dec(PL_unitcheckav_save);
921 SvREFCNT_dec(PL_initav);
923 PL_beginav_save = NULL;
926 PL_checkav_save = NULL;
927 PL_unitcheckav = NULL;
928 PL_unitcheckav_save = NULL;
931 /* shortcuts just get cleared */
940 PL_last_in_gv = NULL;
952 SvREFCNT_dec(PL_argvout_stack);
953 PL_argvout_stack = NULL;
955 SvREFCNT_dec(PL_modglobal);
957 SvREFCNT_dec(PL_preambleav);
958 PL_preambleav = NULL;
959 SvREFCNT_dec(PL_subname);
961 #ifdef PERL_USES_PL_PIDSTATUS
962 SvREFCNT_dec(PL_pidstatus);
965 SvREFCNT_dec(PL_toptarget);
967 SvREFCNT_dec(PL_bodytarget);
968 PL_bodytarget = NULL;
969 PL_formtarget = NULL;
971 /* free locale stuff */
972 #ifdef USE_LOCALE_COLLATE
973 Safefree(PL_collation_name);
974 PL_collation_name = NULL;
977 #ifdef USE_LOCALE_NUMERIC
978 Safefree(PL_numeric_name);
979 PL_numeric_name = NULL;
980 SvREFCNT_dec(PL_numeric_radix_sv);
981 PL_numeric_radix_sv = NULL;
984 /* clear character classes */
985 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
986 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
987 PL_utf8_swash_ptrs[i] = NULL;
989 SvREFCNT_dec(PL_utf8_mark);
990 SvREFCNT_dec(PL_utf8_toupper);
991 SvREFCNT_dec(PL_utf8_totitle);
992 SvREFCNT_dec(PL_utf8_tolower);
993 SvREFCNT_dec(PL_utf8_tofold);
994 SvREFCNT_dec(PL_utf8_idstart);
995 SvREFCNT_dec(PL_utf8_idcont);
996 SvREFCNT_dec(PL_utf8_foldclosures);
998 PL_utf8_toupper = NULL;
999 PL_utf8_totitle = NULL;
1000 PL_utf8_tolower = NULL;
1001 PL_utf8_tofold = NULL;
1002 PL_utf8_idstart = NULL;
1003 PL_utf8_idcont = NULL;
1004 PL_utf8_foldclosures = NULL;
1005 for (i = 0; i < POSIX_CC_COUNT; i++) {
1006 SvREFCNT_dec(PL_Posix_ptrs[i]);
1007 PL_Posix_ptrs[i] = NULL;
1009 SvREFCNT_dec(PL_L1Posix_ptrs[i]);
1010 PL_L1Posix_ptrs[i] = NULL;
1012 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1013 PL_XPosix_ptrs[i] = NULL;
1016 if (!specialWARN(PL_compiling.cop_warnings))
1017 PerlMemShared_free(PL_compiling.cop_warnings);
1018 PL_compiling.cop_warnings = NULL;
1019 cophh_free(CopHINTHASH_get(&PL_compiling));
1020 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1021 CopFILE_free(&PL_compiling);
1023 /* Prepare to destruct main symbol table. */
1026 /* break ref loop *:: <=> %:: */
1027 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1030 SvREFCNT_dec(PL_curstname);
1031 PL_curstname = NULL;
1033 /* clear queued errors */
1034 SvREFCNT_dec(PL_errors);
1037 SvREFCNT_dec(PL_isarev);
1040 if (destruct_level >= 2) {
1041 if (PL_scopestack_ix != 0)
1042 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1043 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1044 (long)PL_scopestack_ix);
1045 if (PL_savestack_ix != 0)
1046 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1047 "Unbalanced saves: %ld more saves than restores\n",
1048 (long)PL_savestack_ix);
1049 if (PL_tmps_floor != -1)
1050 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1051 (long)PL_tmps_floor + 1);
1052 if (cxstack_ix != -1)
1053 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1054 (long)cxstack_ix + 1);
1058 SvREFCNT_dec(PL_regex_padav);
1059 PL_regex_padav = NULL;
1060 PL_regex_pad = NULL;
1063 #ifdef PERL_IMPLICIT_CONTEXT
1064 /* the entries in this list are allocated via SV PVX's, so get freed
1065 * in sv_clean_all */
1066 Safefree(PL_my_cxt_list);
1069 /* Now absolutely destruct everything, somehow or other, loops or no. */
1071 /* the 2 is for PL_fdpid and PL_strtab */
1072 while (sv_clean_all() > 2)
1076 Safefree(PL_stashpad); /* must come after sv_clean_all */
1079 AvREAL_off(PL_fdpid); /* no surviving entries */
1080 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1083 #ifdef HAVE_INTERP_INTERN
1087 /* Destruct the global string table. */
1089 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1090 * so that sv_free() won't fail on them.
1091 * Now that the global string table is using a single hunk of memory
1092 * for both HE and HEK, we either need to explicitly unshare it the
1093 * correct way, or actually free things here.
1096 const I32 max = HvMAX(PL_strtab);
1097 HE * const * const array = HvARRAY(PL_strtab);
1098 HE *hent = array[0];
1101 if (hent && ckWARN_d(WARN_INTERNAL)) {
1102 HE * const next = HeNEXT(hent);
1103 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1104 "Unbalanced string table refcount: (%ld) for \"%s\"",
1105 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1112 hent = array[riter];
1117 HvARRAY(PL_strtab) = 0;
1118 HvTOTALKEYS(PL_strtab) = 0;
1120 SvREFCNT_dec(PL_strtab);
1123 /* free the pointer tables used for cloning */
1124 ptr_table_free(PL_ptr_table);
1125 PL_ptr_table = (PTR_TBL_t*)NULL;
1128 /* free special SVs */
1130 SvREFCNT(&PL_sv_yes) = 0;
1131 sv_clear(&PL_sv_yes);
1132 SvANY(&PL_sv_yes) = NULL;
1133 SvFLAGS(&PL_sv_yes) = 0;
1135 SvREFCNT(&PL_sv_no) = 0;
1136 sv_clear(&PL_sv_no);
1137 SvANY(&PL_sv_no) = NULL;
1138 SvFLAGS(&PL_sv_no) = 0;
1142 for (i=0; i<=2; i++) {
1143 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1144 sv_clear(PERL_DEBUG_PAD(i));
1145 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1146 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1150 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1151 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1153 #ifdef DEBUG_LEAKING_SCALARS
1154 if (PL_sv_count != 0) {
1159 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1160 svend = &sva[SvREFCNT(sva)];
1161 for (sv = sva + 1; sv < svend; ++sv) {
1162 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1163 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1165 " refcnt=%"UVuf pTHX__FORMAT "\n"
1166 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1168 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1170 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1172 sv->sv_debug_inpad ? "for" : "by",
1173 sv->sv_debug_optype ?
1174 PL_op_name[sv->sv_debug_optype]: "(none)",
1175 PTR2UV(sv->sv_debug_parent),
1178 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1179 Perl_dump_sv_child(aTHX_ sv);
1185 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1189 /* Wait for up to 4 seconds for child to terminate.
1190 This seems to be the least effort way of timing out on reaping
1192 struct timeval waitfor = {4, 0};
1193 int sock = PL_dumper_fd;
1197 FD_SET(sock, &rset);
1198 select(sock + 1, &rset, NULL, NULL, &waitfor);
1199 waitpid(child, &status, WNOHANG);
1204 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1210 #if defined(PERLIO_LAYERS)
1211 /* No more IO - including error messages ! */
1212 PerlIO_cleanup(aTHX);
1215 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1216 as currently layers use it rather than NULL as a marker
1217 for no arg - and will try and SvREFCNT_dec it.
1219 SvREFCNT(&PL_sv_undef) = 0;
1220 SvREADONLY_off(&PL_sv_undef);
1222 Safefree(PL_origfilename);
1223 PL_origfilename = NULL;
1224 Safefree(PL_reg_curpm);
1225 Safefree(PL_reg_poscache);
1226 free_tied_hv_pool();
1227 Safefree(PL_op_mask);
1228 Safefree(PL_psig_name);
1229 PL_psig_name = (SV**)NULL;
1230 PL_psig_ptr = (SV**)NULL;
1232 /* We need to NULL PL_psig_pend first, so that
1233 signal handlers know not to use it */
1234 int *psig_save = PL_psig_pend;
1235 PL_psig_pend = (int*)NULL;
1236 Safefree(psig_save);
1239 TAINTING_set(FALSE);
1240 TAINT_WARN_set(FALSE);
1241 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1244 DEBUG_P(debprofdump());
1246 #ifdef USE_REENTRANT_API
1247 Perl_reentrant_free(aTHX);
1252 while (PL_regmatch_slab) {
1253 regmatch_slab *s = PL_regmatch_slab;
1254 PL_regmatch_slab = PL_regmatch_slab->next;
1258 /* As the absolutely last thing, free the non-arena SV for mess() */
1261 /* we know that type == SVt_PVMG */
1263 /* it could have accumulated taint magic */
1266 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1267 moremagic = mg->mg_moremagic;
1268 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1270 Safefree(mg->mg_ptr);
1274 /* we know that type >= SVt_PV */
1275 SvPV_free(PL_mess_sv);
1276 Safefree(SvANY(PL_mess_sv));
1277 Safefree(PL_mess_sv);
1284 =for apidoc perl_free
1286 Releases a Perl interpreter. See L<perlembed>.
1296 PERL_ARGS_ASSERT_PERL_FREE;
1298 if (PL_veto_cleanup)
1301 #ifdef PERL_TRACK_MEMPOOL
1304 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1305 * value as we're probably hunting memory leaks then
1307 if (PL_perl_destruct_level == 0) {
1308 const U32 old_debug = PL_debug;
1309 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1310 thread at thread exit. */
1312 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1313 "free this thread's memory\n");
1314 PL_debug &= ~ DEBUG_m_FLAG;
1316 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1317 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1318 PL_debug = old_debug;
1323 #if defined(WIN32) || defined(NETWARE)
1324 # if defined(PERL_IMPLICIT_SYS)
1327 void *host = nw_internal_host;
1329 void *host = w32_internal_host;
1331 PerlMem_free(aTHXx);
1333 nw_delete_internal_host(host);
1335 win32_delete_internal_host(host);
1339 PerlMem_free(aTHXx);
1342 PerlMem_free(aTHXx);
1346 #if defined(USE_ITHREADS)
1347 /* provide destructors to clean up the thread key when libperl is unloaded */
1348 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1350 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1351 #pragma fini "perl_fini"
1352 #elif defined(__sun) && !defined(__GNUC__)
1353 #pragma fini (perl_fini)
1357 #if defined(__GNUC__)
1358 __attribute__((destructor))
1363 if (PL_curinterp && !PL_veto_cleanup)
1368 #endif /* THREADS */
1371 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1374 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1375 PL_exitlist[PL_exitlistlen].fn = fn;
1376 PL_exitlist[PL_exitlistlen].ptr = ptr;
1381 S_set_caret_X(pTHX) {
1383 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1385 SV *const caret_x = GvSV(tmpgv);
1387 sv_setpv(caret_x, os2_execname(aTHX));
1389 # ifdef USE_KERN_PROC_PATHNAME
1394 mib[2] = KERN_PROC_PATHNAME;
1397 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1398 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1399 sv_grow(caret_x, size);
1401 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1403 SvPOK_only(caret_x);
1404 SvCUR_set(caret_x, size - 1);
1409 # elif defined(USE_NSGETEXECUTABLEPATH)
1411 uint32_t size = sizeof(buf);
1413 _NSGetExecutablePath(buf, &size);
1414 if (size < MAXPATHLEN * MAXPATHLEN) {
1415 sv_grow(caret_x, size);
1416 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1417 char *const tidied = realpath(SvPVX(caret_x), NULL);
1419 sv_setpv(caret_x, tidied);
1422 SvPOK_only(caret_x);
1423 SvCUR_set(caret_x, size);
1428 # elif defined(HAS_PROCSELFEXE)
1429 char buf[MAXPATHLEN];
1430 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1432 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1433 includes a spurious NUL which will cause $^X to fail in system
1434 or backticks (this will prevent extensions from being built and
1435 many tests from working). readlink is not meant to add a NUL.
1436 Normal readlink works fine.
1438 if (len > 0 && buf[len-1] == '\0') {
1442 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1443 returning the text "unknown" from the readlink rather than the path
1444 to the executable (or returning an error from the readlink). Any
1445 valid path has a '/' in it somewhere, so use that to validate the
1446 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1448 if (len > 0 && memchr(buf, '/', len)) {
1449 sv_setpvn(caret_x, buf, len);
1453 /* Fallback to this: */
1454 sv_setpv(caret_x, PL_origargv[0]);
1460 =for apidoc perl_parse
1462 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1467 #define SET_CURSTASH(newstash) \
1468 if (PL_curstash != newstash) { \
1469 SvREFCNT_dec(PL_curstash); \
1470 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1474 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1481 PERL_ARGS_ASSERT_PERL_PARSE;
1482 #ifndef MULTIPLICITY
1483 PERL_UNUSED_ARG(my_perl);
1485 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1487 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1489 if (s && (atoi(s) == 1)) {
1490 unsigned char *seed= PERL_HASH_SEED;
1491 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1492 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1493 while (seed < seed_end) {
1494 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1496 PerlIO_printf(Perl_debug_log, "\n");
1499 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1503 if (PL_origalen != 0) {
1504 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1507 /* Set PL_origalen be the sum of the contiguous argv[]
1508 * elements plus the size of the env in case that it is
1509 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1510 * as the maximum modifiable length of $0. In the worst case
1511 * the area we are able to modify is limited to the size of
1512 * the original argv[0]. (See below for 'contiguous', though.)
1514 const char *s = NULL;
1517 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1518 /* Do the mask check only if the args seem like aligned. */
1520 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1522 /* See if all the arguments are contiguous in memory. Note
1523 * that 'contiguous' is a loose term because some platforms
1524 * align the argv[] and the envp[]. If the arguments look
1525 * like non-aligned, assume that they are 'strictly' or
1526 * 'traditionally' contiguous. If the arguments look like
1527 * aligned, we just check that they are within aligned
1528 * PTRSIZE bytes. As long as no system has something bizarre
1529 * like the argv[] interleaved with some other data, we are
1530 * fine. (Did I just evoke Murphy's Law?) --jhi */
1531 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1533 for (i = 1; i < PL_origargc; i++) {
1534 if ((PL_origargv[i] == s + 1
1536 || PL_origargv[i] == s + 2
1541 (PL_origargv[i] > s &&
1543 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1554 #ifndef PERL_USE_SAFE_PUTENV
1555 /* Can we grab env area too to be used as the area for $0? */
1556 if (s && PL_origenviron && !PL_use_safe_putenv) {
1557 if ((PL_origenviron[0] == s + 1)
1560 (PL_origenviron[0] > s &&
1561 PL_origenviron[0] <=
1562 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1565 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1566 s = PL_origenviron[0];
1569 my_setenv("NoNe SuCh", NULL);
1570 /* Force copy of environment. */
1571 for (i = 1; PL_origenviron[i]; i++) {
1572 if (PL_origenviron[i] == s + 1
1575 (PL_origenviron[i] > s &&
1576 PL_origenviron[i] <=
1577 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1580 s = PL_origenviron[i];
1588 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1590 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1595 /* Come here if running an undumped a.out. */
1597 PL_origfilename = savepv(argv[0]);
1598 PL_do_undump = FALSE;
1599 cxstack_ix = -1; /* start label stack again */
1601 assert (!TAINT_get);
1603 S_set_caret_X(aTHX);
1605 init_postdump_symbols(argc,argv,env);
1610 op_free(PL_main_root);
1611 PL_main_root = NULL;
1613 PL_main_start = NULL;
1614 SvREFCNT_dec(PL_main_cv);
1618 oldscope = PL_scopestack_ix;
1619 PL_dowarn = G_WARN_OFF;
1624 parse_body(env,xsinit);
1625 if (PL_unitcheckav) {
1626 call_list(oldscope, PL_unitcheckav);
1629 PERL_SET_PHASE(PERL_PHASE_CHECK);
1630 call_list(oldscope, PL_checkav);
1638 /* my_exit() was called */
1639 while (PL_scopestack_ix > oldscope)
1642 SET_CURSTASH(PL_defstash);
1643 if (PL_unitcheckav) {
1644 call_list(oldscope, PL_unitcheckav);
1647 PERL_SET_PHASE(PERL_PHASE_CHECK);
1648 call_list(oldscope, PL_checkav);
1653 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1661 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1662 miniperl, and we need to see those flags reflected in the values here. */
1664 /* What this returns is subject to change. Use the public interface in Config.
1667 S_Internals_V(pTHX_ CV *cv)
1670 #ifdef LOCAL_PATCH_COUNT
1671 const int local_patch_count = LOCAL_PATCH_COUNT;
1673 const int local_patch_count = 0;
1675 const int entries = 3 + local_patch_count;
1677 static const char non_bincompat_options[] =
1684 # ifdef PERL_DISABLE_PMC
1687 # ifdef PERL_DONT_CREATE_GVSV
1688 " PERL_DONT_CREATE_GVSV"
1690 # ifdef PERL_EXTERNAL_GLOB
1691 " PERL_EXTERNAL_GLOB"
1693 # ifdef PERL_IS_MINIPERL
1696 # ifdef PERL_MALLOC_WRAP
1699 # ifdef PERL_MEM_LOG
1702 # ifdef PERL_MEM_LOG_NOIMPL
1703 " PERL_MEM_LOG_NOIMPL"
1705 # ifdef PERL_PRESERVE_IVUV
1706 " PERL_PRESERVE_IVUV"
1708 # ifdef PERL_RELOCATABLE_INCPUSH
1709 " PERL_RELOCATABLE_INCPUSH"
1711 # ifdef PERL_USE_DEVEL
1714 # ifdef PERL_USE_SAFE_PUTENV
1715 " PERL_USE_SAFE_PUTENV"
1717 # ifdef UNLINK_ALL_VERSIONS
1718 " UNLINK_ALL_VERSIONS"
1720 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1721 " USE_ATTRIBUTES_FOR_PERLIO"
1723 # ifdef USE_FAST_STDIO
1729 # ifdef USE_LOCALE_CTYPE
1732 # ifdef USE_PERL_ATOF
1735 # ifdef USE_SITECUSTOMIZE
1736 " USE_SITECUSTOMIZE"
1739 PERL_UNUSED_ARG(cv);
1740 PERL_UNUSED_ARG(items);
1742 EXTEND(SP, entries);
1744 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1745 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1746 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1750 PUSHs(Perl_newSVpvn_flags(aTHX_
1751 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1754 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1758 PUSHs(&PL_sv_undef);
1761 for (i = 1; i <= local_patch_count; i++) {
1762 /* This will be an undef, if PL_localpatches[i] is NULL. */
1763 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1769 #define INCPUSH_UNSHIFT 0x01
1770 #define INCPUSH_ADD_OLD_VERS 0x02
1771 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1772 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1773 #define INCPUSH_NOT_BASEDIR 0x10
1774 #define INCPUSH_CAN_RELOCATE 0x20
1775 #define INCPUSH_ADD_SUB_DIRS \
1776 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1779 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1783 int argc = PL_origargc;
1784 char **argv = PL_origargv;
1785 const char *scriptname = NULL;
1786 VOL bool dosearch = FALSE;
1788 bool doextract = FALSE;
1789 const char *cddir = NULL;
1790 #ifdef USE_SITECUSTOMIZE
1791 bool minus_f = FALSE;
1793 SV *linestr_sv = NULL;
1794 bool add_read_e_script = FALSE;
1795 U32 lex_start_flags = 0;
1797 PERL_SET_PHASE(PERL_PHASE_START);
1803 for (argc--,argv++; argc > 0; argc--,argv++) {
1804 if (argv[0][0] != '-' || !argv[0][1])
1810 #ifndef PERL_STRICT_CR
1834 if ((s = moreswitches(s)))
1839 #if SILENT_NO_TAINT_SUPPORT
1840 /* silently ignore */
1841 #elif NO_TAINT_SUPPORT
1842 Perl_croak("This perl was compiled without taint support. "
1843 "Cowardly refusing to run with -t or -T flags");
1845 CHECK_MALLOC_TOO_LATE_FOR('t');
1846 if( !TAINTING_get ) {
1847 TAINT_WARN_set(TRUE);
1854 #if SILENT_NO_TAINT_SUPPORT
1855 /* silently ignore */
1856 #elif NO_TAINT_SUPPORT
1857 Perl_croak("This perl was compiled without taint support. "
1858 "Cowardly refusing to run with -t or -T flags");
1860 CHECK_MALLOC_TOO_LATE_FOR('T');
1862 TAINT_WARN_set(FALSE);
1871 forbid_setid('e', FALSE);
1873 PL_e_script = newSVpvs("");
1874 add_read_e_script = TRUE;
1877 sv_catpv(PL_e_script, s);
1879 sv_catpv(PL_e_script, argv[1]);
1883 Perl_croak(aTHX_ "No code specified for -%c", c);
1884 sv_catpvs(PL_e_script, "\n");
1888 #ifdef USE_SITECUSTOMIZE
1894 case 'I': /* -I handled both here and in moreswitches() */
1895 forbid_setid('I', FALSE);
1896 if (!*++s && (s=argv[1]) != NULL) {
1900 STRLEN len = strlen(s);
1901 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1904 Perl_croak(aTHX_ "No directory specified for -I");
1907 forbid_setid('S', FALSE);
1916 opts_prog = newSVpvs("use Config; Config::_V()");
1920 opts_prog = Perl_newSVpvf(aTHX_
1921 "use Config; Config::config_vars(qw%c%s%c)",
1925 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1926 /* don't look for script or read stdin */
1927 scriptname = BIT_BUCKET;
1939 if (!*++s || isSPACE(*s)) {
1943 /* catch use of gnu style long options.
1944 Both of these exit immediately. */
1945 if (strEQ(s, "version"))
1947 if (strEQ(s, "help"))
1952 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1963 #ifndef SECURE_INTERNAL_GETENV
1966 (s = PerlEnv_getenv("PERL5OPT")))
1970 if (*s == '-' && *(s+1) == 'T') {
1971 #if SILENT_NO_TAINT_SUPPORT
1972 /* silently ignore */
1973 #elif NO_TAINT_SUPPORT
1974 Perl_croak("This perl was compiled without taint support. "
1975 "Cowardly refusing to run with -t or -T flags");
1977 CHECK_MALLOC_TOO_LATE_FOR('T');
1979 TAINT_WARN_set(FALSE);
1983 char *popt_copy = NULL;
1996 if (!strchr("CDIMUdmtwW", *s))
1997 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2001 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2002 s = popt_copy + (s - d);
2010 #if SILENT_NO_TAINT_SUPPORT
2011 /* silently ignore */
2012 #elif NO_TAINT_SUPPORT
2013 Perl_croak("This perl was compiled without taint support. "
2014 "Cowardly refusing to run with -t or -T flags");
2016 if( !TAINTING_get) {
2017 TAINT_WARN_set(TRUE);
2029 /* Set $^X early so that it can be used for relocatable paths in @INC */
2030 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2031 assert (!TAINT_get);
2033 S_set_caret_X(aTHX);
2036 #if defined(USE_SITECUSTOMIZE)
2038 /* The games with local $! are to avoid setting errno if there is no
2039 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2040 ie a q() operator with a NUL byte as a the delimiter. This avoids
2041 problems with pathnames containing (say) ' */
2042 # ifdef PERL_IS_MINIPERL
2043 AV *const inc = GvAV(PL_incgv);
2044 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2047 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2049 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2054 /* SITELIB_EXP is a function call on Win32. */
2055 const char *const raw_sitelib = SITELIB_EXP;
2057 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2058 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2059 INCPUSH_CAN_RELOCATE);
2060 const char *const sitelib = SvPVX(sitelib_sv);
2061 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2063 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2066 assert (SvREFCNT(sitelib_sv) == 1);
2067 SvREFCNT_dec(sitelib_sv);
2074 scriptname = argv[0];
2077 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2079 else if (scriptname == NULL) {
2081 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2087 assert (!TAINT_get);
2091 bool suidscript = FALSE;
2093 rsfp = open_script(scriptname, dosearch, &suidscript);
2095 rsfp = PerlIO_stdin();
2096 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2099 validate_suid(rsfp);
2102 # if defined(SIGCHLD) || defined(SIGCLD)
2105 # define SIGCHLD SIGCLD
2107 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2108 if (sigstate == (Sighandler_t) SIG_IGN) {
2109 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2110 "Can't ignore signal CHLD, forcing to default");
2111 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2119 /* This will croak if suidscript is true, as -x cannot be used with
2121 forbid_setid('x', suidscript);
2122 /* Hence you can't get here if suidscript is true */
2124 linestr_sv = newSV_type(SVt_PV);
2125 lex_start_flags |= LEX_START_COPIED;
2126 find_beginning(linestr_sv, rsfp);
2127 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2128 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2132 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2133 CvUNIQUE_on(PL_compcv);
2135 CvPADLIST(PL_compcv) = pad_new(0);
2137 PL_isarev = newHV();
2140 boot_core_UNIVERSAL();
2142 newXS("Internals::V", S_Internals_V, __FILE__);
2145 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2147 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2153 # ifdef HAS_SOCKS5_INIT
2154 socks5_init(argv[0]);
2160 init_predump_symbols();
2161 /* init_postdump_symbols not currently designed to be called */
2162 /* more than once (ENV isn't cleared first, for example) */
2163 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2165 init_postdump_symbols(argc,argv,env);
2167 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2168 * or explicitly in some platforms.
2169 * locale.c:Perl_init_i18nl10n() if the environment
2170 * look like the user wants to use UTF-8. */
2171 #if defined(__SYMBIAN32__)
2172 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2174 # ifndef PERL_IS_MINIPERL
2176 /* Requires init_predump_symbols(). */
2177 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2182 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2183 * and the default open disciplines. */
2184 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2185 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2187 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2188 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2189 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2191 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2192 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2193 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2195 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2196 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2197 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2199 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2200 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2203 sv_setpvs(sv, ":utf8\0:utf8");
2205 sv_setpvs(sv, ":utf8\0");
2208 sv_setpvs(sv, "\0:utf8");
2217 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2218 if (strEQ(s, "unsafe"))
2219 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2220 else if (strEQ(s, "safe"))
2221 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2223 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2230 if (!TAINTING_get &&
2231 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2235 PL_xmlfp = PerlIO_stdout();
2237 PL_xmlfp = PerlIO_open(s, "w");
2239 Perl_croak(aTHX_ "Can't open %s", s);
2241 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2247 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2248 PL_madskills = atoi(s);
2249 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2254 lex_start(linestr_sv, rsfp, lex_start_flags);
2256 SvREFCNT_dec(linestr_sv);
2258 PL_subname = newSVpvs("main");
2260 if (add_read_e_script)
2261 filter_add(read_e_script, NULL);
2263 /* now parse the script */
2265 SETERRNO(0,SS_NORMAL);
2266 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2268 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2270 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2274 CopLINE_set(PL_curcop, 0);
2275 SET_CURSTASH(PL_defstash);
2277 SvREFCNT_dec(PL_e_script);
2285 SAVECOPFILE(PL_curcop);
2286 SAVECOPLINE(PL_curcop);
2287 gv_check(PL_defstash);
2296 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2297 dump_mstats("after compilation:");
2302 PL_restartjmpenv = NULL;
2308 =for apidoc perl_run
2310 Tells a Perl interpreter to run. See L<perlembed>.
2323 PERL_ARGS_ASSERT_PERL_RUN;
2324 #ifndef MULTIPLICITY
2325 PERL_UNUSED_ARG(my_perl);
2328 oldscope = PL_scopestack_ix;
2336 cxstack_ix = -1; /* start context stack again */
2338 case 0: /* normal completion */
2342 case 2: /* my_exit() */
2343 while (PL_scopestack_ix > oldscope)
2346 SET_CURSTASH(PL_defstash);
2347 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2348 PL_endav && !PL_minus_c) {
2349 PERL_SET_PHASE(PERL_PHASE_END);
2350 call_list(oldscope, PL_endav);
2353 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2354 dump_mstats("after execution: ");
2360 POPSTACK_TO(PL_mainstack);
2363 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2374 S_run_body(pTHX_ I32 oldscope)
2377 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2378 PL_sawampersand ? "Enabling" : "Omitting",
2379 (unsigned int)(PL_sawampersand)));
2381 if (!PL_restartop) {
2385 exit(0); /* less likely to core dump than my_exit(0) */
2389 if (DEBUG_x_TEST || DEBUG_B_TEST)
2390 dump_all_perl(!DEBUG_B_TEST);
2392 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2396 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2399 if (PERLDB_SINGLE && PL_DBsingle)
2400 sv_setiv(PL_DBsingle, 1);
2402 PERL_SET_PHASE(PERL_PHASE_INIT);
2403 call_list(oldscope, PL_initav);
2405 #ifdef PERL_DEBUG_READONLY_OPS
2406 if (PL_main_root && PL_main_root->op_slabbed)
2407 Slab_to_ro(OpSLAB(PL_main_root));
2413 PERL_SET_PHASE(PERL_PHASE_RUN);
2416 PL_restartjmpenv = NULL;
2417 PL_op = PL_restartop;
2421 else if (PL_main_start) {
2422 CvDEPTH(PL_main_cv) = 1;
2423 PL_op = PL_main_start;
2427 assert(0); /* NOTREACHED */
2431 =head1 SV Manipulation Functions
2433 =for apidoc p||get_sv
2435 Returns the SV of the specified Perl scalar. C<flags> are passed to
2436 C<gv_fetchpv>. If C<GV_ADD> is set and the
2437 Perl variable does not exist then it will be created. If C<flags> is zero
2438 and the variable does not exist then NULL is returned.
2444 Perl_get_sv(pTHX_ const char *name, I32 flags)
2448 PERL_ARGS_ASSERT_GET_SV;
2450 gv = gv_fetchpv(name, flags, SVt_PV);
2457 =head1 Array Manipulation Functions
2459 =for apidoc p||get_av
2461 Returns the AV of the specified Perl global or package array with the given
2462 name (so it won't work on lexical variables). C<flags> are passed
2463 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2464 Perl variable does not exist then it will be created. If C<flags> is zero
2465 and the variable does not exist then NULL is returned.
2467 Perl equivalent: C<@{"$name"}>.
2473 Perl_get_av(pTHX_ const char *name, I32 flags)
2475 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2477 PERL_ARGS_ASSERT_GET_AV;
2487 =head1 Hash Manipulation Functions
2489 =for apidoc p||get_hv
2491 Returns the HV of the specified Perl hash. C<flags> are passed to
2492 C<gv_fetchpv>. If C<GV_ADD> is set and the
2493 Perl variable does not exist then it will be created. If C<flags> is zero
2494 and the variable does not exist then NULL is returned.
2500 Perl_get_hv(pTHX_ const char *name, I32 flags)
2502 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2504 PERL_ARGS_ASSERT_GET_HV;
2514 =head1 CV Manipulation Functions
2516 =for apidoc p||get_cvn_flags
2518 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2519 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2520 exist then it will be declared (which has the same effect as saying
2521 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2522 then NULL is returned.
2524 =for apidoc p||get_cv
2526 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2532 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2534 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2536 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2538 /* XXX this is probably not what they think they're getting.
2539 * It has the same effect as "sub name;", i.e. just a forward
2541 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2542 return newSTUB(gv,0);
2549 /* Nothing in core calls this now, but we can't replace it with a macro and
2550 move it to mathoms.c as a macro would evaluate name twice. */
2552 Perl_get_cv(pTHX_ const char *name, I32 flags)
2554 PERL_ARGS_ASSERT_GET_CV;
2556 return get_cvn_flags(name, strlen(name), flags);
2559 /* Be sure to refetch the stack pointer after calling these routines. */
2563 =head1 Callback Functions
2565 =for apidoc p||call_argv
2567 Performs a callback to the specified named and package-scoped Perl subroutine
2568 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2570 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2576 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2578 /* See G_* flags in cop.h */
2579 /* null terminated arg list */
2584 PERL_ARGS_ASSERT_CALL_ARGV;
2589 mXPUSHs(newSVpv(*argv,0));
2594 return call_pv(sub_name, flags);
2598 =for apidoc p||call_pv
2600 Performs a callback to the specified Perl sub. See L<perlcall>.
2606 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2607 /* name of the subroutine */
2608 /* See G_* flags in cop.h */
2610 PERL_ARGS_ASSERT_CALL_PV;
2612 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2616 =for apidoc p||call_method
2618 Performs a callback to the specified Perl method. The blessed object must
2619 be on the stack. See L<perlcall>.
2625 Perl_call_method(pTHX_ const char *methname, I32 flags)
2626 /* name of the subroutine */
2627 /* See G_* flags in cop.h */
2630 PERL_ARGS_ASSERT_CALL_METHOD;
2632 len = strlen(methname);
2634 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2635 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2638 /* May be called with any of a CV, a GV, or an SV containing the name. */
2640 =for apidoc p||call_sv
2642 Performs a callback to the Perl sub whose name is in the SV. See
2649 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2650 /* See G_* flags in cop.h */
2653 LOGOP myop; /* fake syntax tree node */
2658 bool oldcatch = CATCH_GET;
2660 OP* const oldop = PL_op;
2663 PERL_ARGS_ASSERT_CALL_SV;
2665 if (flags & G_DISCARD) {
2669 if (!(flags & G_WANT)) {
2670 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2675 Zero(&myop, 1, LOGOP);
2676 if (!(flags & G_NOARGS))
2677 myop.op_flags |= OPf_STACKED;
2678 myop.op_flags |= OP_GIMME_REVERSE(flags);
2682 EXTEND(PL_stack_sp, 1);
2683 *++PL_stack_sp = sv;
2685 oldscope = PL_scopestack_ix;
2687 if (PERLDB_SUB && PL_curstash != PL_debstash
2688 /* Handle first BEGIN of -d. */
2689 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2690 /* Try harder, since this may have been a sighandler, thus
2691 * curstash may be meaningless. */
2692 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2693 && !(flags & G_NODEBUG))
2694 myop.op_private |= OPpENTERSUB_DB;
2696 if (flags & G_METHOD) {
2697 Zero(&method_op, 1, UNOP);
2698 method_op.op_next = (OP*)&myop;
2699 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2700 method_op.op_type = OP_METHOD;
2701 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2702 myop.op_type = OP_ENTERSUB;
2703 PL_op = (OP*)&method_op;
2706 if (!(flags & G_EVAL)) {
2708 CALL_BODY_SUB((OP*)&myop);
2709 retval = PL_stack_sp - (PL_stack_base + oldmark);
2710 CATCH_SET(oldcatch);
2713 myop.op_other = (OP*)&myop;
2715 create_eval_scope(flags|G_FAKINGEVAL);
2723 CALL_BODY_SUB((OP*)&myop);
2724 retval = PL_stack_sp - (PL_stack_base + oldmark);
2725 if (!(flags & G_KEEPERR)) {
2733 /* my_exit() was called */
2734 SET_CURSTASH(PL_defstash);
2738 assert(0); /* NOTREACHED */
2741 PL_restartjmpenv = NULL;
2742 PL_op = PL_restartop;
2746 PL_stack_sp = PL_stack_base + oldmark;
2747 if ((flags & G_WANT) == G_ARRAY)
2751 *++PL_stack_sp = &PL_sv_undef;
2756 if (PL_scopestack_ix > oldscope)
2757 delete_eval_scope();
2761 if (flags & G_DISCARD) {
2762 PL_stack_sp = PL_stack_base + oldmark;
2771 /* Eval a string. The G_EVAL flag is always assumed. */
2774 =for apidoc p||eval_sv
2776 Tells Perl to C<eval> the string in the SV. It supports the same flags
2777 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2783 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2785 /* See G_* flags in cop.h */
2789 UNOP myop; /* fake syntax tree node */
2790 VOL I32 oldmark = SP - PL_stack_base;
2793 OP* const oldop = PL_op;
2796 PERL_ARGS_ASSERT_EVAL_SV;
2798 if (flags & G_DISCARD) {
2805 Zero(&myop, 1, UNOP);
2806 EXTEND(PL_stack_sp, 1);
2807 *++PL_stack_sp = sv;
2809 if (!(flags & G_NOARGS))
2810 myop.op_flags = OPf_STACKED;
2811 myop.op_type = OP_ENTEREVAL;
2812 myop.op_flags |= OP_GIMME_REVERSE(flags);
2813 if (flags & G_KEEPERR)
2814 myop.op_flags |= OPf_SPECIAL;
2815 if (PL_reg_state.re_reparsing)
2816 myop.op_private = OPpEVAL_COPHH;
2818 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2819 * before a PUSHEVAL, which corrupts the stack after a croak */
2820 TAINT_PROPER("eval_sv()");
2826 if (PL_op == (OP*)(&myop)) {
2827 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2829 goto fail; /* failed in compilation */
2832 retval = PL_stack_sp - (PL_stack_base + oldmark);
2833 if (!(flags & G_KEEPERR)) {
2841 /* my_exit() was called */
2842 SET_CURSTASH(PL_defstash);
2846 assert(0); /* NOTREACHED */
2849 PL_restartjmpenv = NULL;
2850 PL_op = PL_restartop;
2855 PL_stack_sp = PL_stack_base + oldmark;
2856 if ((flags & G_WANT) == G_ARRAY)
2860 *++PL_stack_sp = &PL_sv_undef;
2866 if (flags & G_DISCARD) {
2867 PL_stack_sp = PL_stack_base + oldmark;
2877 =for apidoc p||eval_pv
2879 Tells Perl to C<eval> the given string and return an SV* result.
2885 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2888 SV* sv = newSVpv(p, 0);
2890 PERL_ARGS_ASSERT_EVAL_PV;
2892 eval_sv(sv, G_SCALAR);
2901 /* just check empty string or undef? */
2902 if (croak_on_error) {
2903 SV * const errsv = ERRSV;
2904 if(SvTRUE_NN(errsv))
2905 /* replace with croak_sv? */
2906 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2912 /* Require a module. */
2915 =head1 Embedding Functions
2917 =for apidoc p||require_pv
2919 Tells Perl to C<require> the file named by the string argument. It is
2920 analogous to the Perl code C<eval "require '$file'">. It's even
2921 implemented that way; consider using load_module instead.
2926 Perl_require_pv(pTHX_ const char *pv)
2932 PERL_ARGS_ASSERT_REQUIRE_PV;
2934 PUSHSTACKi(PERLSI_REQUIRE);
2936 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2937 eval_sv(sv_2mortal(sv), G_DISCARD);
2943 S_usage(pTHX) /* XXX move this out into a module ? */
2945 /* This message really ought to be max 23 lines.
2946 * Removed -h because the user already knows that option. Others? */
2948 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2949 minimum of 509 character string literals. */
2950 static const char * const usage_msg[] = {
2951 " -0[octal] specify record separator (\\0, if no argument)\n"
2952 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2953 " -C[number/list] enables the listed Unicode features\n"
2954 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2955 " -d[:debugger] run program under debugger\n"
2956 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2957 " -e program one line of program (several -e's allowed, omit programfile)\n"
2958 " -E program like -e, but enables all optional features\n"
2959 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2960 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2961 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2962 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2963 " -l[octal] enable line ending processing, specifies line terminator\n"
2964 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2965 " -n assume \"while (<>) { ... }\" loop around program\n"
2966 " -p assume loop like -n but print line also, like sed\n"
2967 " -s enable rudimentary parsing for switches after programfile\n"
2968 " -S look for programfile using PATH environment variable\n",
2969 " -t enable tainting warnings\n"
2970 " -T enable tainting checks\n"
2971 " -u dump core after parsing program\n"
2972 " -U allow unsafe operations\n"
2973 " -v print version, patchlevel and license\n"
2974 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2975 " -w enable many useful warnings\n"
2976 " -W enable all warnings\n"
2977 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2978 " -X disable all warnings\n"
2980 "Run 'perldoc perl' for more help with Perl.\n\n",
2983 const char * const *p = usage_msg;
2984 PerlIO *out = PerlIO_stdout();
2987 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2990 PerlIO_puts(out, *p++);
2994 /* convert a string of -D options (or digits) into an int.
2995 * sets *s to point to the char after the options */
2999 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3001 static const char * const usage_msgd[] = {
3002 " Debugging flag values: (see also -d)\n"
3003 " p Tokenizing and parsing (with v, displays parse stack)\n"
3004 " s Stack snapshots (with v, displays all stacks)\n"
3005 " l Context (loop) stack processing\n"
3006 " t Trace execution\n"
3007 " o Method and overloading resolution\n",
3008 " c String/numeric conversions\n"
3009 " P Print profiling info, source file input state\n"
3010 " m Memory and SV allocation\n"
3011 " f Format processing\n"
3012 " r Regular expression parsing and execution\n"
3013 " x Syntax tree dump\n",
3014 " u Tainting checks\n"
3015 " H Hash dump -- usurps values()\n"
3016 " X Scratchpad allocation\n"
3018 " S Op slab allocation\n"
3020 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3021 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3022 " v Verbose: use in conjunction with other flags\n"
3023 " C Copy On Write\n"
3024 " A Consistency checks on internal structures\n"
3025 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3026 " M trace smart match resolution\n"
3027 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3032 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3035 /* if adding extra options, remember to update DEBUG_MASK */
3036 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
3038 for (; isALNUM(**s); (*s)++) {
3039 const char * const d = strchr(debopts,**s);
3041 i |= 1 << (d - debopts);
3042 else if (ckWARN_d(WARN_DEBUGGING))
3043 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3044 "invalid option -D%c, use -D'' to see choices\n", **s);
3047 else if (isDIGIT(**s)) {
3049 for (; isALNUM(**s); (*s)++) ;
3051 else if (givehelp) {
3052 const char *const *p = usage_msgd;
3053 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3056 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3057 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3058 "-Dp not implemented on this platform\n");
3064 /* This routine handles any switches that can be given during run */
3067 Perl_moreswitches(pTHX_ const char *s)
3071 const char option = *s; /* used to remember option in -m/-M code */
3073 PERL_ARGS_ASSERT_MORESWITCHES;
3081 SvREFCNT_dec(PL_rs);
3082 if (s[1] == 'x' && s[2]) {
3083 const char *e = s+=2;
3089 flags = PERL_SCAN_SILENT_ILLDIGIT;
3090 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3091 if (s + numlen < e) {
3092 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3096 PL_rs = newSVpvs("");
3097 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3098 tmps = (U8*)SvPVX(PL_rs);
3099 uvchr_to_utf8(tmps, rschar);
3100 SvCUR_set(PL_rs, UNISKIP(rschar));
3105 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3106 if (rschar & ~((U8)~0))
3107 PL_rs = &PL_sv_undef;
3108 else if (!rschar && numlen >= 2)
3109 PL_rs = newSVpvs("");
3111 char ch = (char)rschar;
3112 PL_rs = newSVpvn(&ch, 1);
3115 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3120 PL_unicode = parse_unicode_opts( (const char **)&s );
3121 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3127 while (*s && !isSPACE(*s)) ++s;
3128 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3139 forbid_setid('d', FALSE);
3142 /* -dt indicates to the debugger that threads will be used */
3143 if (*s == 't' && !isALNUM(s[1])) {
3145 my_setenv("PERL5DB_THREADED", "1");
3148 /* The following permits -d:Mod to accepts arguments following an =
3149 in the fashion that -MSome::Mod does. */
3150 if (*s == ':' || *s == '=') {
3157 sv = newSVpvs("no Devel::");
3159 sv = newSVpvs("use Devel::");
3163 end = s + strlen(s);
3165 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3166 while(isALNUM(*s) || *s==':') ++s;
3168 sv_catpvn(sv, start, end - start);
3170 sv_catpvn(sv, start, s-start);
3171 /* Don't use NUL as q// delimiter here, this string goes in the
3173 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3176 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3180 PL_perldb = PERLDB_ALL;
3187 forbid_setid('D', FALSE);
3189 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3190 #else /* !DEBUGGING */
3191 if (ckWARN_d(WARN_DEBUGGING))
3192 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3193 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3194 for (s++; isALNUM(*s); s++) ;
3201 Safefree(PL_inplace);
3202 #if defined(__CYGWIN__) /* do backup extension automagically */
3203 if (*(s+1) == '\0') {
3204 PL_inplace = savepvs(".bak");
3207 #endif /* __CYGWIN__ */
3209 const char * const start = ++s;
3210 while (*s && !isSPACE(*s))
3213 PL_inplace = savepvn(start, s - start);
3217 if (*s == '-') /* Additional switches on #! line. */
3221 case 'I': /* -I handled both here and in parse_body() */
3222 forbid_setid('I', FALSE);
3224 while (*s && isSPACE(*s))
3229 /* ignore trailing spaces (possibly followed by other switches) */
3231 for (e = p; *e && !isSPACE(*e); e++) ;
3235 } while (*p && *p != '-');
3237 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3243 Perl_croak(aTHX_ "No directory specified for -I");
3249 SvREFCNT_dec(PL_ors_sv);
3255 PL_ors_sv = newSVpvs("\n");
3256 numlen = 3 + (*s == '0');
3257 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3261 if (RsPARA(PL_rs)) {
3262 PL_ors_sv = newSVpvs("\n\n");
3265 PL_ors_sv = newSVsv(PL_rs);
3270 forbid_setid('M', FALSE); /* XXX ? */
3273 forbid_setid('m', FALSE); /* XXX ? */
3278 const char *use = "use ";
3280 /* -M-foo == 'no foo' */
3281 /* Leading space on " no " is deliberate, to make both
3282 possibilities the same length. */
3283 if (*s == '-') { use = " no "; ++s; }
3284 sv = newSVpvn(use,4);
3286 /* We allow -M'Module qw(Foo Bar)' */
3287 while(isALNUM(*s) || *s==':') {
3296 Perl_croak(aTHX_ "Module name required with -%c option",
3299 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3300 "contains single ':'",
3301 (int)(s - start), start, option);
3302 end = s + strlen(s);
3304 sv_catpvn(sv, start, end - start);
3305 if (option == 'm') {
3307 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3308 sv_catpvs( sv, " ()");
3311 sv_catpvn(sv, start, s-start);
3312 /* Use NUL as q''-delimiter. */
3313 sv_catpvs(sv, " split(/,/,q\0");
3315 sv_catpvn(sv, s, end - s);
3316 sv_catpvs(sv, "\0)");
3319 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3322 Perl_croak(aTHX_ "Missing argument to -%c", option);
3333 forbid_setid('s', FALSE);
3334 PL_doswitches = TRUE;
3339 #if SILENT_NO_TAINT_SUPPORT
3340 /* silently ignore */
3341 #elif NO_TAINT_SUPPORT
3342 Perl_croak("This perl was compiled without taint support. "
3343 "Cowardly refusing to run with -t or -T flags");
3351 PL_do_undump = TRUE;
3361 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3362 PL_dowarn |= G_WARN_ON;
3367 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3368 if (!specialWARN(PL_compiling.cop_warnings))
3369 PerlMemShared_free(PL_compiling.cop_warnings);
3370 PL_compiling.cop_warnings = pWARN_ALL ;
3374 PL_dowarn = G_WARN_ALL_OFF;
3375 if (!specialWARN(PL_compiling.cop_warnings))
3376 PerlMemShared_free(PL_compiling.cop_warnings);
3377 PL_compiling.cop_warnings = pWARN_NONE ;
3384 if (s[0] == '-') /* Additional switches on #! line. */
3389 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3395 #ifdef ALTERNATE_SHEBANG
3396 case 'S': /* OS/2 needs -S on "extproc" line. */
3399 case 'e': case 'f': case 'x': case 'E':
3400 #ifndef ALTERNATE_SHEBANG
3404 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3407 "Unrecognized switch: -%.1s (-h will show valid options)",s
3417 PerlIO * PIO_stdout;
3418 if (!sv_derived_from(PL_patchlevel, "version"))
3419 upg_version(PL_patchlevel, TRUE);
3422 SV* level= vstringify(PL_patchlevel);
3423 #ifdef PERL_PATCHNUM
3424 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3425 SV *num = newSVpvs(PERL_PATCHNUM "*");
3427 SV *num = newSVpvs(PERL_PATCHNUM);
3430 STRLEN level_len, num_len;
3431 char * level_str, * num_str;
3432 num_str = SvPV(num, num_len);
3433 level_str = SvPV(level, level_len);
3434 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3435 SvREFCNT_dec(level);
3438 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3443 PIO_stdout = PerlIO_stdout();
3444 PerlIO_printf(PIO_stdout,
3445 "\nThis is perl " STRINGIFY(PERL_REVISION)
3446 ", version " STRINGIFY(PERL_VERSION)
3447 ", subversion " STRINGIFY(PERL_SUBVERSION)
3448 " (%"SVf") built for " ARCHNAME, level
3450 SvREFCNT_dec(level);
3453 PIO_stdout = PerlIO_stdout();
3454 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3455 PerlIO_printf(PIO_stdout,
3456 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3457 SVfARG(vstringify(PL_patchlevel))));
3458 PerlIO_printf(PIO_stdout,
3459 Perl_form(aTHX_ " built under %s at %s %s\n",
3460 OSNAME, __DATE__, __TIME__));
3461 PerlIO_printf(PIO_stdout,
3462 Perl_form(aTHX_ " OS Specific Release: %s\n",
3465 #if defined(LOCAL_PATCH_COUNT)
3466 if (LOCAL_PATCH_COUNT > 0)
3467 PerlIO_printf(PIO_stdout,
3468 "\n(with %d registered patch%s, "
3469 "see perl -V for more detail)",
3471 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3474 PerlIO_printf(PIO_stdout,
3475 "\n\nCopyright 1987-2012, Larry Wall\n");
3477 PerlIO_printf(PIO_stdout,
3478 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3481 PerlIO_printf(PIO_stdout,
3482 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3483 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3486 PerlIO_printf(PIO_stdout,
3487 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3488 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3491 PerlIO_printf(PIO_stdout,
3492 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3495 PerlIO_printf(PIO_stdout,
3496 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3499 PerlIO_printf(PIO_stdout,
3500 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3503 PerlIO_printf(PIO_stdout,
3504 "WINCE port by Rainer Keuchel, 2001-2002\n"
3505 "Built on " __DATE__ " " __TIME__ "\n\n");
3508 #ifdef __SYMBIAN32__
3509 PerlIO_printf(PIO_stdout,
3510 "Symbian port by Nokia, 2004-2005\n");
3512 #ifdef BINARY_BUILD_NOTICE
3513 BINARY_BUILD_NOTICE;
3515 PerlIO_printf(PIO_stdout,
3517 Perl may be copied only under the terms of either the Artistic License or the\n\
3518 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3519 Complete documentation for Perl, including FAQ lists, should be found on\n\
3520 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3521 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3525 /* compliments of Tom Christiansen */
3527 /* unexec() can be found in the Gnu emacs distribution */
3528 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3531 #include <lib$routines.h>
3535 Perl_my_unexec(pTHX)
3537 PERL_UNUSED_CONTEXT;
3539 SV * prog = newSVpv(BIN_EXP, 0);
3540 SV * file = newSVpv(PL_origfilename, 0);
3544 sv_catpvs(prog, "/perl");
3545 sv_catpvs(file, ".perldump");
3547 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3548 /* unexec prints msg to stderr in case of failure */
3549 PerlProc_exit(status);
3552 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3553 # elif defined(WIN32) || defined(__CYGWIN__)
3554 Perl_croak(aTHX_ "dump is not supported");
3556 ABORT(); /* for use with undump */
3561 /* initialize curinterp */
3567 # define PERLVAR(prefix,var,type)
3568 # define PERLVARA(prefix,var,n,type)
3569 # if defined(PERL_IMPLICIT_CONTEXT)
3570 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3571 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3573 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3574 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3576 # include "intrpvar.h"
3582 # define PERLVAR(prefix,var,type)
3583 # define PERLVARA(prefix,var,n,type)
3584 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3585 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3586 # include "intrpvar.h"
3593 /* As these are inside a structure, PERLVARI isn't capable of initialising
3595 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3596 PL_reg_poscache = PL_reg_starttry = NULL;
3600 S_init_main_stash(pTHX)
3605 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3606 /* We know that the string "main" will be in the global shared string
3607 table, so it's a small saving to use it rather than allocate another
3609 PL_curstname = newSVpvs_share("main");
3610 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3611 /* If we hadn't caused another reference to "main" to be in the shared
3612 string table above, then it would be worth reordering these two,
3613 because otherwise all we do is delete "main" from it as a consequence
3614 of the SvREFCNT_dec, only to add it again with hv_name_set */
3615 SvREFCNT_dec(GvHV(gv));
3616 hv_name_set(PL_defstash, "main", 4, 0);
3617 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3619 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3621 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3622 GvMULTI_on(PL_incgv);
3623 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3624 GvMULTI_on(PL_hintgv);
3625 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3626 SvREFCNT_inc_simple_void(PL_defgv);
3627 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3628 SvREFCNT_inc_simple_void(PL_errgv);
3629 GvMULTI_on(PL_errgv);
3630 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3631 GvMULTI_on(PL_replgv);
3632 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3633 #ifdef PERL_DONT_CREATE_GVSV
3636 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3638 SET_CURSTASH(PL_defstash);
3639 CopSTASH_set(&PL_compiling, PL_defstash);
3640 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3641 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3643 /* We must init $/ before switches are processed. */
3644 sv_setpvs(get_sv("/", GV_ADD), "\n");
3648 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3651 PerlIO *rsfp = NULL;
3654 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3657 PL_origfilename = savepvs("-e");
3660 /* if find_script() returns, it returns a malloc()-ed value */
3661 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3663 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3664 const char *s = scriptname + 8;
3670 * Tell apart "normal" usage of fdscript, e.g.
3671 * with bash on FreeBSD:
3672 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3673 * from usage in suidperl.
3674 * Does any "normal" usage leave garbage after the number???
3675 * Is it a mistake to use a similar /dev/fd/ construct for
3680 * Be supersafe and do some sanity-checks.
3681 * Still, can we be sure we got the right thing?
3684 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3687 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3689 scriptname = savepv(s + 1);
3690 Safefree(PL_origfilename);
3691 PL_origfilename = (char *)scriptname;
3696 CopFILE_free(PL_curcop);
3697 CopFILE_set(PL_curcop, PL_origfilename);
3698 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3699 scriptname = (char *)"";
3700 if (fdscript >= 0) {
3701 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3703 else if (!*scriptname) {
3704 forbid_setid(0, *suidscript);
3708 #ifdef FAKE_BIT_BUCKET
3709 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3710 * is called) and still have the "-e" work. (Believe it or not,
3711 * a /dev/null is required for the "-e" to work because source
3712 * filter magic is used to implement it. ) This is *not* a general
3713 * replacement for a /dev/null. What we do here is create a temp
3714 * file (an empty file), open up that as the script, and then
3715 * immediately close and unlink it. Close enough for jazz. */
3716 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3717 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3718 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3719 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3720 FAKE_BIT_BUCKET_TEMPLATE
3722 const char * const err = "Failed to create a fake bit bucket";
3723 if (strEQ(scriptname, BIT_BUCKET)) {
3724 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3725 int tmpfd = mkstemp(tmpname);
3727 scriptname = tmpname;
3730 Perl_croak(aTHX_ err);
3733 scriptname = mktemp(tmpname);
3735 Perl_croak(aTHX_ err);
3740 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3741 #ifdef FAKE_BIT_BUCKET
3742 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3743 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3744 && strlen(scriptname) == sizeof(tmpname) - 1) {
3747 scriptname = BIT_BUCKET;
3751 /* PSz 16 Sep 03 Keep neat error message */
3753 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3755 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3756 CopFILE(PL_curcop), Strerror(errno));
3758 #if defined(HAS_FCNTL) && defined(F_SETFD)
3759 /* ensure close-on-exec */
3760 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3766 * I_SYSSTATVFS HAS_FSTATVFS
3768 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3769 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3770 * here so that metaconfig picks them up. */
3773 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3774 /* Don't even need this function. */
3777 S_validate_suid(pTHX_ PerlIO *rsfp)
3779 const UV my_uid = PerlProc_getuid();
3780 const UV my_euid = PerlProc_geteuid();
3781 const UV my_gid = PerlProc_getgid();
3782 const UV my_egid = PerlProc_getegid();
3784 PERL_ARGS_ASSERT_VALIDATE_SUID;
3786 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3789 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3790 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3792 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3795 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3796 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3797 /* not set-id, must be wrapped */
3800 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3803 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3809 PERL_ARGS_ASSERT_FIND_BEGINNING;
3811 /* skip forward in input to the real script? */
3814 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3815 Perl_croak(aTHX_ "No Perl script found in input\n");
3817 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3818 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3819 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3821 while (*s == ' ' || *s == '\t') s++;
3823 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3824 || s2[-1] == '_') s2--;
3825 if (strnEQ(s2-4,"perl",4))
3826 while ((s = moreswitches(s)))
3835 /* no need to do anything here any more if we don't
3837 #if !NO_TAINT_SUPPORT
3839 const UV my_uid = PerlProc_getuid();
3840 const UV my_euid = PerlProc_geteuid();
3841 const UV my_gid = PerlProc_getgid();
3842 const UV my_egid = PerlProc_getegid();
3844 /* Should not happen: */
3845 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3846 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3850 * Should go by suidscript, not uid!=euid: why disallow
3851 * system("ls") in scripts run from setuid things?
3852 * Or, is this run before we check arguments and set suidscript?
3853 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3854 * (We never have suidscript, can we be sure to have fdscript?)
3855 * Or must then go by UID checks? See comments in forbid_setid also.
3859 /* This is used very early in the lifetime of the program,
3860 * before even the options are parsed, so PL_tainting has
3861 * not been initialized properly. */
3863 Perl_doing_taint(int argc, char *argv[], char *envp[])
3865 #ifndef PERL_IMPLICIT_SYS
3866 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3867 * before we have an interpreter-- and the whole point of this
3868 * function is to be called at such an early stage. If you are on
3869 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3870 * "tainted because running with altered effective ids', you'll
3871 * have to add your own checks somewhere in here. The two most
3872 * known samples of 'implicitness' are Win32 and NetWare, neither
3873 * of which has much of concept of 'uids'. */
3874 int uid = PerlProc_getuid();
3875 int euid = PerlProc_geteuid();
3876 int gid = PerlProc_getgid();
3877 int egid = PerlProc_getegid();
3884 if (uid && (euid != uid || egid != gid))
3886 #endif /* !PERL_IMPLICIT_SYS */
3887 /* This is a really primitive check; environment gets ignored only
3888 * if -T are the first chars together; otherwise one gets
3889 * "Too late" message. */
3890 if ( argc > 1 && argv[1][0] == '-'
3891 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3896 /* Passing the flag as a single char rather than a string is a slight space
3897 optimisation. The only message that isn't /^-.$/ is
3898 "program input from stdin", which is substituted in place of '\0', which
3899 could never be a command line flag. */
3901 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3904 char string[3] = "-x";
3905 const char *message = "program input from stdin";
3912 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3913 if (PerlProc_getuid() != PerlProc_geteuid())
3914 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3915 if (PerlProc_getgid() != PerlProc_getegid())
3916 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3917 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3919 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3923 Perl_init_dbargs(pTHX)
3925 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3930 /* Someone has already created it.
3931 It might have entries, and if we just turn off AvREAL(), they will
3932 "leak" until global destruction. */
3934 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3935 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3937 AvREIFY_only(PL_dbargs);
3941 Perl_init_debugger(pTHX)
3944 HV * const ostash = PL_curstash;
3946 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3948 Perl_init_dbargs(aTHX);
3949 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3950 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3951 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3952 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3953 if (!SvIOK(PL_DBsingle))
3954 sv_setiv(PL_DBsingle, 0);
3955 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3956 if (!SvIOK(PL_DBtrace))
3957 sv_setiv(PL_DBtrace, 0);
3958 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3959 if (!SvIOK(PL_DBsignal))
3960 sv_setiv(PL_DBsignal, 0);
3961 SvREFCNT_dec(PL_curstash);
3962 PL_curstash = ostash;
3965 #ifndef STRESS_REALLOC
3966 #define REASONABLE(size) (size)
3968 #define REASONABLE(size) (1) /* unreasonable */
3972 Perl_init_stacks(pTHX)
3975 /* start with 128-item stack and 8K cxstack */
3976 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3977 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3978 PL_curstackinfo->si_type = PERLSI_MAIN;
3979 PL_curstack = PL_curstackinfo->si_stack;
3980 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3982 PL_stack_base = AvARRAY(PL_curstack);
3983 PL_stack_sp = PL_stack_base;
3984 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3986 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3989 PL_tmps_max = REASONABLE(128);
3991 Newx(PL_markstack,REASONABLE(32),I32);
3992 PL_markstack_ptr = PL_markstack;
3993 PL_markstack_max = PL_markstack + REASONABLE(32);
3997 Newx(PL_scopestack,REASONABLE(32),I32);
3999 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4001 PL_scopestack_ix = 0;
4002 PL_scopestack_max = REASONABLE(32);
4004 Newx(PL_savestack,REASONABLE(128),ANY);
4005 PL_savestack_ix = 0;
4006 PL_savestack_max = REASONABLE(128);
4015 while (PL_curstackinfo->si_next)
4016 PL_curstackinfo = PL_curstackinfo->si_next;
4017 while (PL_curstackinfo) {
4018 PERL_SI *p = PL_curstackinfo->si_prev;
4019 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4020 Safefree(PL_curstackinfo->si_cxstack);
4021 Safefree(PL_curstackinfo);
4022 PL_curstackinfo = p;
4024 Safefree(PL_tmps_stack);
4025 Safefree(PL_markstack);
4026 Safefree(PL_scopestack);
4028 Safefree(PL_scopestack_name);
4030 Safefree(PL_savestack);
4034 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4036 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4037 AV *const isa = GvAVn(gv);
4040 PERL_ARGS_ASSERT_POPULATE_ISA;
4042 if(AvFILLp(isa) != -1)
4045 /* NOTE: No support for tied ISA */
4047 va_start(args, len);
4049 const char *const parent = va_arg(args, const char*);
4054 parent_len = va_arg(args, size_t);
4056 /* Arguments are supplied with a trailing :: */
4057 assert(parent_len > 2);
4058 assert(parent[parent_len - 1] == ':');
4059 assert(parent[parent_len - 2] == ':');
4060 av_push(isa, newSVpvn(parent, parent_len - 2));
4061 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4068 S_init_predump_symbols(pTHX)
4074 sv_setpvs(get_sv("\"", GV_ADD), " ");
4075 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4078 /* Historically, PVIOs were blessed into IO::Handle, unless
4079 FileHandle was loaded, in which case they were blessed into
4080 that. Action at a distance.
4081 However, if we simply bless into IO::Handle, we break code
4082 that assumes that PVIOs will have (among others) a seek
4083 method. IO::File inherits from IO::Handle and IO::Seekable,
4084 and provides the needed methods. But if we simply bless into
4085 it, then we break code that assumed that by loading
4086 IO::Handle, *it* would work.
4087 So a compromise is to set up the correct @IO::File::ISA,
4088 so that code that does C<use IO::Handle>; will still work.
4091 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4092 STR_WITH_LEN("IO::Handle::"),
4093 STR_WITH_LEN("IO::Seekable::"),
4094 STR_WITH_LEN("Exporter::"),
4097 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4098 GvMULTI_on(PL_stdingv);
4099 io = GvIOp(PL_stdingv);
4100 IoTYPE(io) = IoTYPE_RDONLY;
4101 IoIFP(io) = PerlIO_stdin();
4102 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4104 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4106 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4109 IoTYPE(io) = IoTYPE_WRONLY;
4110 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4112 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4114 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4116 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4117 GvMULTI_on(PL_stderrgv);
4118 io = GvIOp(PL_stderrgv);
4119 IoTYPE(io) = IoTYPE_WRONLY;
4120 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4121 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4123 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4125 PL_statname = newSVpvs(""); /* last filename we did stat on */
4129 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4133 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4135 argc--,argv++; /* skip name of script */
4136 if (PL_doswitches) {
4137 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4141 if (argv[0][1] == '-' && !argv[0][2]) {
4145 if ((s = strchr(argv[0], '='))) {
4146 const char *const start_name = argv[0] + 1;
4147 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4148 TRUE, SVt_PV)), s + 1);
4151 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4154 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4155 GvMULTI_on(PL_argvgv);
4156 (void)gv_AVadd(PL_argvgv);
4157 av_clear(GvAVn(PL_argvgv));
4158 for (; argc > 0; argc--,argv++) {
4159 SV * const sv = newSVpv(argv[0],0);
4160 av_push(GvAVn(PL_argvgv),sv);
4161 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4162 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4165 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4166 (void)sv_utf8_decode(sv);
4170 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4171 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4172 "-i used with no filenames on the command line, "
4173 "reading from STDIN");
4177 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4182 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4184 PL_toptarget = newSV_type(SVt_PVIV);
4185 sv_setpvs(PL_toptarget, "");
4186 PL_bodytarget = newSV_type(SVt_PVIV);
4187 sv_setpvs(PL_bodytarget, "");
4188 PL_formtarget = PL_bodytarget;
4192 init_argv_symbols(argc,argv);
4194 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4195 sv_setpv(GvSV(tmpgv),PL_origfilename);
4197 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4199 bool env_is_not_environ;
4200 GvMULTI_on(PL_envgv);
4201 hv = GvHVn(PL_envgv);
4202 hv_magic(hv, NULL, PERL_MAGIC_env);
4204 #ifdef USE_ENVIRON_ARRAY
4205 /* Note that if the supplied env parameter is actually a copy
4206 of the global environ then it may now point to free'd memory
4207 if the environment has been modified since. To avoid this
4208 problem we treat env==NULL as meaning 'use the default'
4212 env_is_not_environ = env != environ;
4213 if (env_is_not_environ
4214 # ifdef USE_ITHREADS
4215 && PL_curinterp == aTHX
4224 for (; *env; env++) {
4227 if (!(s = strchr(old_var,'=')) || s == old_var)
4230 #if defined(MSDOS) && !defined(DJGPP)
4232 (void)strupr(old_var);
4235 sv = newSVpv(s+1, 0);
4236 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4237 if (env_is_not_environ)
4241 #endif /* USE_ENVIRON_ARRAY */
4242 #endif /* !PERL_MICRO */
4246 /* touch @F array to prevent spurious warnings 20020415 MJD */
4248 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4253 S_init_perllib(pTHX)
4257 const char *perl5lib = NULL;
4260 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4264 if (!TAINTING_get) {
4266 perl5lib = PerlEnv_getenv("PERL5LIB");
4268 * It isn't possible to delete an environment variable with
4269 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4270 * case we treat PERL5LIB as undefined if it has a zero-length value.
4272 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4273 if (perl5lib && *perl5lib != '\0')
4277 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4279 s = PerlEnv_getenv("PERLLIB");
4281 incpush_use_sep(s, 0, 0);
4284 /* Treat PERL5?LIB as a possible search list logical name -- the
4285 * "natural" VMS idiom for a Unix path string. We allow each
4286 * element to be a set of |-separated directories for compatibility.
4290 if (my_trnlnm("PERL5LIB",buf,0))
4292 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4293 } while (my_trnlnm("PERL5LIB",buf,++idx));
4295 while (my_trnlnm("PERLLIB",buf,idx++))
4296 incpush_use_sep(buf, 0, 0);
4301 #ifndef PERL_IS_MINIPERL
4302 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4303 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4305 /* Use the ~-expanded versions of APPLLIB (undocumented),
4306 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4309 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4310 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4314 /* sitearch is always relative to sitelib on Windows for
4315 * DLL-based path intuition to work correctly */
4316 # if !defined(WIN32)
4317 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4318 INCPUSH_CAN_RELOCATE);
4324 /* this picks up sitearch as well */
4325 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4327 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4329 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4333 #ifdef PERL_VENDORARCH_EXP
4334 /* vendorarch is always relative to vendorlib on Windows for
4335 * DLL-based path intuition to work correctly */
4336 # if !defined(WIN32)
4337 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4338 INCPUSH_CAN_RELOCATE);
4342 #ifdef PERL_VENDORLIB_EXP
4344 /* this picks up vendorarch as well */
4345 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4347 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4349 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4350 INCPUSH_CAN_RELOCATE);
4355 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4359 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4363 s = win32_get_privlib(PERL_FS_VERSION, &len);
4365 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4368 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4370 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4374 #ifdef PERL_OTHERLIBDIRS
4375 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4376 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4377 |INCPUSH_CAN_RELOCATE);
4380 if (!TAINTING_get) {
4383 * It isn't possible to delete an environment variable with
4384 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4385 * case we treat PERL5LIB as undefined if it has a zero-length value.
4387 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4388 if (perl5lib && *perl5lib != '\0')
4392 incpush_use_sep(perl5lib, 0,
4393 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4395 /* Treat PERL5?LIB as a possible search list logical name -- the
4396 * "natural" VMS idiom for a Unix path string. We allow each
4397 * element to be a set of |-separated directories for compatibility.
4401 if (my_trnlnm("PERL5LIB",buf,0))
4403 incpush_use_sep(buf, 0,
4404 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4405 } while (my_trnlnm("PERL5LIB",buf,++idx));
4409 /* Use the ~-expanded versions of APPLLIB (undocumented),
4410 SITELIB and VENDORLIB for older versions
4413 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4414 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4417 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4418 /* Search for version-specific dirs below here */
4419 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4420 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4424 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4425 /* Search for version-specific dirs below here */
4426 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4427 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4430 #ifdef PERL_OTHERLIBDIRS
4431 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4432 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4433 |INCPUSH_CAN_RELOCATE);
4435 #endif /* !PERL_IS_MINIPERL */
4438 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4441 #if defined(DOSISH) || defined(__SYMBIAN32__)
4442 # define PERLLIB_SEP ';'
4445 # define PERLLIB_SEP '|'
4447 # define PERLLIB_SEP ':'
4450 #ifndef PERLLIB_MANGLE
4451 # define PERLLIB_MANGLE(s,n) (s)
4454 #ifndef PERL_IS_MINIPERL
4455 /* Push a directory onto @INC if it exists.
4456 Generate a new SV if we do this, to save needing to copy the SV we push
4459 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4464 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4466 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4467 S_ISDIR(tmpstatbuf.st_mode)) {
4469 dir = newSVsv(stem);
4471 /* Truncate dir back to stem. */
4472 SvCUR_set(dir, SvCUR(stem));
4479 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4481 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4484 PERL_ARGS_ASSERT_MAYBERELOCATE;
4488 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4489 defined to so something (in os2/os2.c), but the code has been
4490 this way, ignoring any possible changed of length, since
4491 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4493 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4495 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4502 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4504 while (unix[len-1] == '/') len--; /* Cosmetic */
4505 sv_usepvn(libdir,unix,len);
4508 PerlIO_printf(Perl_error_log,
4509 "Failed to unixify @INC element \"%s\"\n",
4510 SvPV_nolen_const(libdir));
4514 /* Do the if() outside the #ifdef to avoid warnings about an unused
4517 #ifdef PERL_RELOCATABLE_INC
4519 * Relocatable include entries are marked with a leading .../
4522 * 0: Remove that leading ".../"
4523 * 1: Remove trailing executable name (anything after the last '/')
4524 * from the perl path to give a perl prefix
4526 * While the @INC element starts "../" and the prefix ends with a real
4527 * directory (ie not . or ..) chop that real directory off the prefix
4528 * and the leading "../" from the @INC element. ie a logical "../"
4530 * Finally concatenate the prefix and the remainder of the @INC element
4531 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4532 * generates /usr/local/lib/perl5
4534 const char *libpath = SvPVX(libdir);
4535 STRLEN libpath_len = SvCUR(libdir);
4536 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4538 SV * const caret_X = get_sv("\030", 0);
4539 /* Going to use the SV just as a scratch buffer holding a C
4545 /* $^X is *the* source of taint if tainting is on, hence
4546 SvPOK() won't be true. */
4548 assert(SvPOKp(caret_X));
4549 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4551 /* Firstly take off the leading .../
4552 If all else fail we'll do the paths relative to the current
4554 sv_chop(libdir, libpath + 4);
4555 /* Don't use SvPV as we're intentionally bypassing taining,
4556 mortal copies that the mg_get of tainting creates, and
4557 corruption that seems to come via the save stack.
4558 I guess that the save stack isn't correctly set up yet. */
4559 libpath = SvPVX(libdir);
4560 libpath_len = SvCUR(libdir);
4562 /* This would work more efficiently with memrchr, but as it's
4563 only a GNU extension we'd need to probe for it and
4564 implement our own. Not hard, but maybe not worth it? */
4566 prefix = SvPVX(prefix_sv);
4567 lastslash = strrchr(prefix, '/');
4569 /* First time in with the *lastslash = '\0' we just wipe off
4570 the trailing /perl from (say) /usr/foo/bin/perl
4574 while ((*lastslash = '\0'), /* Do that, come what may. */
4575 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4576 && (lastslash = strrchr(prefix, '/')))) {
4577 if (lastslash[1] == '\0'
4578 || (lastslash[1] == '.'
4579 && (lastslash[2] == '/' /* ends "/." */
4580 || (lastslash[2] == '/'
4581 && lastslash[3] == '/' /* or "/.." */
4583 /* Prefix ends "/" or "/." or "/..", any of which
4584 are fishy, so don't do any more logical cleanup.
4588 /* Remove leading "../" from path */
4591 /* Next iteration round the loop removes the last
4592 directory name from prefix by writing a '\0' in
4593 the while clause. */
4595 /* prefix has been terminated with a '\0' to the correct
4596 length. libpath points somewhere into the libdir SV.
4597 We need to join the 2 with '/' and drop the result into
4599 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4600 SvREFCNT_dec(libdir);
4601 /* And this is the new libdir. */
4604 (PerlProc_getuid() != PerlProc_geteuid() ||
4605 PerlProc_getgid() != PerlProc_getegid())) {
4606 /* Need to taint relocated paths if running set ID */
4607 SvTAINTED_on(libdir);
4610 SvREFCNT_dec(prefix_sv);
4618 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4621 #ifndef PERL_IS_MINIPERL
4622 const U8 using_sub_dirs
4623 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4624 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4625 const U8 add_versioned_sub_dirs
4626 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4627 const U8 add_archonly_sub_dirs
4628 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4629 #ifdef PERL_INC_VERSION_LIST
4630 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4633 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4634 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4635 AV *const inc = GvAVn(PL_incgv);
4637 PERL_ARGS_ASSERT_INCPUSH;
4640 /* Could remove this vestigial extra block, if we don't mind a lot of
4641 re-indenting diff noise. */
4643 SV *const libdir = mayberelocate(dir, len, flags);
4644 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4645 arranged to unshift #! line -I onto the front of @INC. However,
4646 -I can add version and architecture specific libraries, and they
4647 need to go first. The old code assumed that it was always
4648 pushing. Hence to make it work, need to push the architecture
4649 (etc) libraries onto a temporary array, then "unshift" that onto
4650 the front of @INC. */
4651 #ifndef PERL_IS_MINIPERL
4652 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4655 * BEFORE pushing libdir onto @INC we may first push version- and
4656 * archname-specific sub-directories.
4658 if (using_sub_dirs) {
4659 SV *subdir = newSVsv(libdir);
4660 #ifdef PERL_INC_VERSION_LIST
4661 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4662 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4663 const char * const *incver;
4666 if (add_versioned_sub_dirs) {
4667 /* .../version/archname if -d .../version/archname */
4668 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4669 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4671 /* .../version if -d .../version */
4672 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4673 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4676 #ifdef PERL_INC_VERSION_LIST
4678 for (incver = incverlist; *incver; incver++) {
4679 /* .../xxx if -d .../xxx */
4680 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4681 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4686 if (add_archonly_sub_dirs) {
4687 /* .../archname if -d .../archname */
4688 sv_catpvs(subdir, "/" ARCHNAME);
4689 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4693 assert (SvREFCNT(subdir) == 1);
4694 SvREFCNT_dec(subdir);
4696 #endif /* !PERL_IS_MINIPERL */
4697 /* finally add this lib directory at the end of @INC */
4699 #ifdef PERL_IS_MINIPERL
4700 const U32 extra = 0;
4702 U32 extra = av_len(av) + 1;
4704 av_unshift(inc, extra + push_basedir);
4706 av_store(inc, extra, libdir);
4707 #ifndef PERL_IS_MINIPERL
4709 /* av owns a reference, av_store() expects to be donated a
4710 reference, and av expects to be sane when it's cleared.
4711 If I wanted to be naughty and wrong, I could peek inside the
4712 implementation of av_clear(), realise that it uses
4713 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4714 and so directly steal from it (with a memcpy() to inc, and
4715 then memset() to NULL them out. But people copy code from the
4716 core expecting it to be best practise, so let's use the API.
4717 Although studious readers will note that I'm not checking any
4719 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4724 else if (push_basedir) {
4725 av_push(inc, libdir);
4728 if (!push_basedir) {
4729 assert (SvREFCNT(libdir) == 1);
4730 SvREFCNT_dec(libdir);
4736 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4740 /* This logic has been broken out from S_incpush(). It may be possible to
4743 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4745 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4746 * argument to incpush_use_sep. This allows creation of relocatable
4747 * Perl distributions that patch the binary at install time. Those
4748 * distributions will have to provide their own relocation tools; this
4749 * is not a feature otherwise supported by core Perl.
4751 #ifndef PERL_RELOCATABLE_INCPUSH
4758 /* Break at all separators */
4759 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4761 /* skip any consecutive separators */
4763 /* Uncomment the next line for PATH semantics */
4764 /* But you'll need to write tests */
4765 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4767 incpush(p, (STRLEN)(s - p), flags);
4772 incpush(p, (STRLEN)(end - p), flags);
4777 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4781 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4787 PERL_ARGS_ASSERT_CALL_LIST;
4789 while (av_len(paramList) >= 0) {
4790 cv = MUTABLE_CV(av_shift(paramList));
4792 if (paramList == PL_beginav) {
4793 /* save PL_beginav for compiler */
4794 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4796 else if (paramList == PL_checkav) {
4797 /* save PL_checkav for compiler */
4798 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4800 else if (paramList == PL_unitcheckav) {
4801 /* save PL_unitcheckav for compiler */
4802 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4813 PL_madskills |= 16384;
4818 PL_madskills &= ~16384;
4821 (void)SvPV_const(atsv, len);
4823 PL_curcop = &PL_compiling;
4824 CopLINE_set(PL_curcop, oldline);
4825 if (paramList == PL_beginav)
4826 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4828 Perl_sv_catpvf(aTHX_ atsv,
4829 "%s failed--call queue aborted",
4830 paramList == PL_checkav ? "CHECK"
4831 : paramList == PL_initav ? "INIT"
4832 : paramList == PL_unitcheckav ? "UNITCHECK"
4834 while (PL_scopestack_ix > oldscope)
4837 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4844 /* my_exit() was called */
4845 while (PL_scopestack_ix > oldscope)
4848 SET_CURSTASH(PL_defstash);
4849 PL_curcop = &PL_compiling;
4850 CopLINE_set(PL_curcop, oldline);
4853 assert(0); /* NOTREACHED */
4856 PL_curcop = &PL_compiling;
4857 CopLINE_set(PL_curcop, oldline);
4860 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4869 Perl_my_exit(pTHX_ U32 status)
4880 STATUS_EXIT_SET(status);
4887 Perl_my_failure_exit(pTHX)
4891 /* We have been called to fall on our sword. The desired exit code
4892 * should be already set in STATUS_UNIX, but could be shifted over
4893 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4896 * If an error code has not been set, then force the issue.
4898 if (MY_POSIX_EXIT) {
4900 /* According to the die_exit.t tests, if errno is non-zero */
4901 /* It should be used for the error status. */
4903 if (errno == EVMSERR) {
4904 STATUS_NATIVE = vaxc$errno;
4907 /* According to die_exit.t tests, if the child_exit code is */
4908 /* also zero, then we need to exit with a code of 255 */
4909 if ((errno != 0) && (errno < 256))
4910 STATUS_UNIX_EXIT_SET(errno);
4911 else if (STATUS_UNIX < 255) {
4912 STATUS_UNIX_EXIT_SET(255);
4917 /* The exit code could have been set by $? or vmsish which
4918 * means that it may not have fatal set. So convert
4919 * success/warning codes to fatal with out changing
4920 * the POSIX status code. The severity makes VMS native
4921 * status handling work, while UNIX mode programs use the
4922 * the POSIX exit codes.
4924 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4925 STATUS_NATIVE &= STS$M_COND_ID;
4926 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4930 /* Traditionally Perl on VMS always expects a Fatal Error. */
4931 if (vaxc$errno & 1) {
4933 /* So force success status to failure */
4934 if (STATUS_NATIVE & 1)
4939 STATUS_UNIX = EINTR; /* In case something cares */
4944 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4946 /* Encode the severity code */
4947 severity = STATUS_NATIVE & STS$M_SEVERITY;
4948 STATUS_UNIX = (severity ? severity : 1) << 8;
4950 /* Perl expects this to be a fatal error */
4951 if (severity != STS$K_SEVERE)
4960 STATUS_UNIX_SET(errno);
4962 exitstatus = STATUS_UNIX >> 8;
4963 if (exitstatus & 255)
4964 STATUS_UNIX_SET(exitstatus);
4966 STATUS_UNIX_SET(255);
4973 S_my_exit_jump(pTHX)
4978 SvREFCNT_dec(PL_e_script);
4982 POPSTACK_TO(PL_mainstack);
4990 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4993 const char * const p = SvPVX_const(PL_e_script);
4994 const char *nl = strchr(p, '\n');
4996 PERL_UNUSED_ARG(idx);
4997 PERL_UNUSED_ARG(maxlen);
4999 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5001 filter_del(read_e_script);
5004 sv_catpvn(buf_sv, p, nl-p);
5005 sv_chop(PL_e_script, nl);
5011 * c-indentation-style: bsd
5013 * indent-tabs-mode: nil
5016 * ex: set ts=8 sts=4 sw=4 et: