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) = (~(U32)0)/2;
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
522 PERL_ARGS_ASSERT_PERL_DESTRUCT;
524 PERL_UNUSED_ARG(my_perl);
527 assert(PL_scopestack_ix == 1);
529 /* wait for all pseudo-forked children to finish */
530 PERL_WAIT_FOR_CHILDREN;
532 destruct_level = PL_perl_destruct_level;
533 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
535 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
537 const int i = atoi(s);
539 if (destruct_level < i) destruct_level = i;
541 #ifdef PERL_TRACK_MEMPOOL
542 /* RT #114496, for perl_free */
543 PL_perl_destruct_level = i;
549 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
555 if (PL_endav && !PL_minus_c) {
556 PERL_SET_PHASE(PERL_PHASE_END);
557 call_list(PL_scopestack_ix, PL_endav);
563 assert(PL_scopestack_ix == 0);
565 /* Need to flush since END blocks can produce output */
568 if (PL_threadhook(aTHX)) {
569 /* Threads hook has vetoed further cleanup */
570 PL_veto_cleanup = TRUE;
574 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
575 if (destruct_level != 0) {
576 /* Fork here to create a child. Our child's job is to preserve the
577 state of scalars prior to destruction, so that we can instruct it
578 to dump any scalars that we later find have leaked.
579 There's no subtlety in this code - it assumes POSIX, and it doesn't
583 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
584 perror("Debug leaking scalars socketpair failed");
590 perror("Debug leaking scalars fork failed");
594 /* We are the child */
595 const int sock = fd[1];
596 const int debug_fd = PerlIO_fileno(Perl_debug_log);
599 /* Our success message is an integer 0, and a char 0 */
600 static const char success[sizeof(int) + 1] = {0};
604 /* We need to close all other file descriptors otherwise we end up
605 with interesting hangs, where the parent closes its end of a
606 pipe, and sits waiting for (another) child to terminate. Only
607 that child never terminates, because it never gets EOF, because
608 we also have the far end of the pipe open. We even need to
609 close the debugging fd, because sometimes it happens to be one
610 end of a pipe, and a process is waiting on the other end for
611 EOF. Normally it would be closed at some point earlier in
612 destruction, but if we happen to cause the pipe to remain open,
613 EOF never occurs, and we get an infinite hang. Hence all the
614 games to pass in a file descriptor if it's actually needed. */
616 f = sysconf(_SC_OPEN_MAX);
618 where = "sysconf failed";
629 union control_un control;
632 struct cmsghdr *cmptr;
636 msg.msg_control = control.control;
637 msg.msg_controllen = sizeof(control.control);
638 /* We're a connected socket so we don't need a source */
642 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
644 vec[0].iov_base = (void*)⌖
645 vec[0].iov_len = sizeof(target);
647 got = recvmsg(sock, &msg, 0);
652 where = "recv failed";
655 if(got < sizeof(target)) {
656 where = "short recv";
660 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
664 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
665 where = "wrong cmsg_len";
668 if(cmptr->cmsg_level != SOL_SOCKET) {
669 where = "wrong cmsg_level";
672 if(cmptr->cmsg_type != SCM_RIGHTS) {
673 where = "wrong cmsg_type";
677 got_fd = *(int*)CMSG_DATA(cmptr);
678 /* For our last little bit of trickery, put the file descriptor
679 back into Perl_debug_log, as if we never actually closed it
681 if(got_fd != debug_fd) {
682 if (dup2(got_fd, debug_fd) == -1) {
689 PerlIO_flush(Perl_debug_log);
691 got = write(sock, &success, sizeof(success));
694 where = "write failed";
697 if(got < sizeof(success)) {
698 where = "short write";
705 int send_errno = errno;
706 unsigned char length = (unsigned char) strlen(where);
707 struct iovec failure[3] = {
708 {(void*)&send_errno, sizeof(send_errno)},
710 {(void*)where, length}
712 int got = writev(sock, failure, 3);
713 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
714 in the parent if we try to read from the socketpair after the
715 child has exited, even if there was data to read.
716 So sleep a bit to give the parent a fighting chance of
719 _exit((got == -1) ? errno : 0);
723 PL_dumper_fd = fd[0];
728 /* We must account for everything. */
730 /* Destroy the main CV and syntax tree */
731 /* Set PL_curcop now, because destroying ops can cause new SVs
732 to be generated in Perl_pad_swipe, and when running with
733 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
734 op from which the filename structure member is copied. */
735 PL_curcop = &PL_compiling;
737 /* ensure comppad/curpad to refer to main's pad */
738 if (CvPADLIST(PL_main_cv)) {
739 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
741 op_free(PL_main_root);
744 PL_main_start = NULL;
745 /* note that PL_main_cv isn't usually actually freed at this point,
746 * due to the CvOUTSIDE refs from subs compiled within it. It will
747 * get freed once all the subs are freed in sv_clean_all(), for
748 * destruct_level > 0 */
749 SvREFCNT_dec(PL_main_cv);
751 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
753 /* Tell PerlIO we are about to tear things apart in case
754 we have layers which are using resources that should
758 PerlIO_destruct(aTHX);
760 if (PL_sv_objcount) {
762 * Try to destruct global references. We do this first so that the
763 * destructors and destructees still exist. Some sv's might remain.
764 * Non-referenced objects are on their own.
770 /* unhook hooks which will soon be, or use, destroyed data */
771 SvREFCNT_dec(PL_warnhook);
773 SvREFCNT_dec(PL_diehook);
776 /* call exit list functions */
777 while (PL_exitlistlen-- > 0)
778 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
780 Safefree(PL_exitlist);
785 SvREFCNT_dec(PL_registered_mros);
787 /* jettison our possibly duplicated environment */
788 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
789 * so we certainly shouldn't free it here
792 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
793 if (environ != PL_origenviron && !PL_use_safe_putenv
795 /* only main thread can free environ[0] contents */
796 && PL_curinterp == aTHX
802 for (i = 0; environ[i]; i++)
803 safesysfree(environ[i]);
805 /* Must use safesysfree() when working with environ. */
806 safesysfree(environ);
808 environ = PL_origenviron;
811 #endif /* !PERL_MICRO */
813 if (destruct_level == 0) {
815 DEBUG_P(debprofdump());
817 #if defined(PERLIO_LAYERS)
818 /* No more IO - including error messages ! */
819 PerlIO_cleanup(aTHX);
822 CopFILE_free(&PL_compiling);
824 /* The exit() function will do everything that needs doing. */
829 /* the syntax tree is shared between clones
830 * so op_free(PL_main_root) only ReREFCNT_dec's
831 * REGEXPs in the parent interpreter
832 * we need to manually ReREFCNT_dec for the clones
835 I32 i = AvFILLp(PL_regex_padav);
836 SV **ary = AvARRAY(PL_regex_padav);
839 SvREFCNT_dec(ary[i]);
840 ary[i] = &PL_sv_undef;
846 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
847 PL_stashcache = NULL;
849 /* loosen bonds of global variables */
851 /* XXX can PL_parser still be non-null here? */
852 if(PL_parser && PL_parser->rsfp) {
853 (void)PerlIO_close(PL_parser->rsfp);
854 PL_parser->rsfp = NULL;
858 Safefree(PL_splitstr);
868 PL_doswitches = FALSE;
869 PL_dowarn = G_WARN_OFF;
870 #ifdef PERL_SAWAMPERSAND
871 PL_sawampersand = 0; /* must save all match strings */
875 Safefree(PL_inplace);
877 SvREFCNT_dec(PL_patchlevel);
878 SvREFCNT_dec(PL_apiversion);
881 SvREFCNT_dec(PL_e_script);
887 /* magical thingies */
889 SvREFCNT_dec(PL_ofsgv); /* *, */
892 SvREFCNT_dec(PL_ors_sv); /* $\ */
895 SvREFCNT_dec(PL_rs); /* $/ */
898 Safefree(PL_osname); /* $^O */
901 SvREFCNT_dec(PL_statname);
905 /* defgv, aka *_ should be taken care of elsewhere */
908 Safefree(PL_efloatbuf);
912 /* startup and shutdown function lists */
913 SvREFCNT_dec(PL_beginav);
914 SvREFCNT_dec(PL_beginav_save);
915 SvREFCNT_dec(PL_endav);
916 SvREFCNT_dec(PL_checkav);
917 SvREFCNT_dec(PL_checkav_save);
918 SvREFCNT_dec(PL_unitcheckav);
919 SvREFCNT_dec(PL_unitcheckav_save);
920 SvREFCNT_dec(PL_initav);
922 PL_beginav_save = NULL;
925 PL_checkav_save = NULL;
926 PL_unitcheckav = NULL;
927 PL_unitcheckav_save = NULL;
930 /* shortcuts just get cleared */
939 PL_last_in_gv = NULL;
951 SvREFCNT_dec(PL_argvout_stack);
952 PL_argvout_stack = NULL;
954 SvREFCNT_dec(PL_modglobal);
956 SvREFCNT_dec(PL_preambleav);
957 PL_preambleav = NULL;
958 SvREFCNT_dec(PL_subname);
960 #ifdef PERL_USES_PL_PIDSTATUS
961 SvREFCNT_dec(PL_pidstatus);
964 SvREFCNT_dec(PL_toptarget);
966 SvREFCNT_dec(PL_bodytarget);
967 PL_bodytarget = NULL;
968 PL_formtarget = NULL;
970 /* free locale stuff */
971 #ifdef USE_LOCALE_COLLATE
972 Safefree(PL_collation_name);
973 PL_collation_name = NULL;
976 #ifdef USE_LOCALE_NUMERIC
977 Safefree(PL_numeric_name);
978 PL_numeric_name = NULL;
979 SvREFCNT_dec(PL_numeric_radix_sv);
980 PL_numeric_radix_sv = NULL;
983 /* clear utf8 character classes */
984 SvREFCNT_dec(PL_utf8_alnum);
985 SvREFCNT_dec(PL_utf8_alpha);
986 SvREFCNT_dec(PL_utf8_graph);
987 SvREFCNT_dec(PL_utf8_digit);
988 SvREFCNT_dec(PL_utf8_upper);
989 SvREFCNT_dec(PL_utf8_lower);
990 SvREFCNT_dec(PL_utf8_print);
991 SvREFCNT_dec(PL_utf8_punct);
992 SvREFCNT_dec(PL_utf8_mark);
993 SvREFCNT_dec(PL_utf8_toupper);
994 SvREFCNT_dec(PL_utf8_totitle);
995 SvREFCNT_dec(PL_utf8_tolower);
996 SvREFCNT_dec(PL_utf8_tofold);
997 SvREFCNT_dec(PL_utf8_idstart);
998 SvREFCNT_dec(PL_utf8_idcont);
999 SvREFCNT_dec(PL_utf8_foldclosures);
1000 PL_utf8_alnum = NULL;
1001 PL_utf8_alpha = NULL;
1002 PL_utf8_graph = NULL;
1003 PL_utf8_digit = NULL;
1004 PL_utf8_upper = NULL;
1005 PL_utf8_lower = NULL;
1006 PL_utf8_print = NULL;
1007 PL_utf8_punct = NULL;
1008 PL_utf8_mark = NULL;
1009 PL_utf8_toupper = NULL;
1010 PL_utf8_totitle = NULL;
1011 PL_utf8_tolower = NULL;
1012 PL_utf8_tofold = NULL;
1013 PL_utf8_idstart = NULL;
1014 PL_utf8_idcont = NULL;
1015 PL_utf8_foldclosures = NULL;
1017 if (!specialWARN(PL_compiling.cop_warnings))
1018 PerlMemShared_free(PL_compiling.cop_warnings);
1019 PL_compiling.cop_warnings = NULL;
1020 cophh_free(CopHINTHASH_get(&PL_compiling));
1021 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1022 CopFILE_free(&PL_compiling);
1024 /* Prepare to destruct main symbol table. */
1027 /* break ref loop *:: <=> %:: */
1028 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1031 SvREFCNT_dec(PL_curstname);
1032 PL_curstname = NULL;
1034 /* clear queued errors */
1035 SvREFCNT_dec(PL_errors);
1038 SvREFCNT_dec(PL_isarev);
1041 if (destruct_level >= 2) {
1042 if (PL_scopestack_ix != 0)
1043 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1044 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1045 (long)PL_scopestack_ix);
1046 if (PL_savestack_ix != 0)
1047 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1048 "Unbalanced saves: %ld more saves than restores\n",
1049 (long)PL_savestack_ix);
1050 if (PL_tmps_floor != -1)
1051 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1052 (long)PL_tmps_floor + 1);
1053 if (cxstack_ix != -1)
1054 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1055 (long)cxstack_ix + 1);
1059 SvREFCNT_dec(PL_regex_padav);
1060 PL_regex_padav = NULL;
1061 PL_regex_pad = NULL;
1064 #ifdef PERL_IMPLICIT_CONTEXT
1065 /* the entries in this list are allocated via SV PVX's, so get freed
1066 * in sv_clean_all */
1067 Safefree(PL_my_cxt_list);
1070 /* Now absolutely destruct everything, somehow or other, loops or no. */
1072 /* the 2 is for PL_fdpid and PL_strtab */
1073 while (sv_clean_all() > 2)
1077 Safefree(PL_stashpad); /* must come after sv_clean_all */
1080 AvREAL_off(PL_fdpid); /* no surviving entries */
1081 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1084 #ifdef HAVE_INTERP_INTERN
1088 /* Destruct the global string table. */
1090 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1091 * so that sv_free() won't fail on them.
1092 * Now that the global string table is using a single hunk of memory
1093 * for both HE and HEK, we either need to explicitly unshare it the
1094 * correct way, or actually free things here.
1097 const I32 max = HvMAX(PL_strtab);
1098 HE * const * const array = HvARRAY(PL_strtab);
1099 HE *hent = array[0];
1102 if (hent && ckWARN_d(WARN_INTERNAL)) {
1103 HE * const next = HeNEXT(hent);
1104 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1105 "Unbalanced string table refcount: (%ld) for \"%s\"",
1106 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1113 hent = array[riter];
1118 HvARRAY(PL_strtab) = 0;
1119 HvTOTALKEYS(PL_strtab) = 0;
1121 SvREFCNT_dec(PL_strtab);
1124 /* free the pointer tables used for cloning */
1125 ptr_table_free(PL_ptr_table);
1126 PL_ptr_table = (PTR_TBL_t*)NULL;
1129 /* free special SVs */
1131 SvREFCNT(&PL_sv_yes) = 0;
1132 sv_clear(&PL_sv_yes);
1133 SvANY(&PL_sv_yes) = NULL;
1134 SvFLAGS(&PL_sv_yes) = 0;
1136 SvREFCNT(&PL_sv_no) = 0;
1137 sv_clear(&PL_sv_no);
1138 SvANY(&PL_sv_no) = NULL;
1139 SvFLAGS(&PL_sv_no) = 0;
1143 for (i=0; i<=2; i++) {
1144 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1145 sv_clear(PERL_DEBUG_PAD(i));
1146 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1147 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1151 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1154 #ifdef DEBUG_LEAKING_SCALARS
1155 if (PL_sv_count != 0) {
1160 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1161 svend = &sva[SvREFCNT(sva)];
1162 for (sv = sva + 1; sv < svend; ++sv) {
1163 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1164 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1166 " refcnt=%"UVuf pTHX__FORMAT "\n"
1167 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1169 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1171 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1173 sv->sv_debug_inpad ? "for" : "by",
1174 sv->sv_debug_optype ?
1175 PL_op_name[sv->sv_debug_optype]: "(none)",
1176 PTR2UV(sv->sv_debug_parent),
1179 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1180 Perl_dump_sv_child(aTHX_ sv);
1186 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1190 /* Wait for up to 4 seconds for child to terminate.
1191 This seems to be the least effort way of timing out on reaping
1193 struct timeval waitfor = {4, 0};
1194 int sock = PL_dumper_fd;
1198 FD_SET(sock, &rset);
1199 select(sock + 1, &rset, NULL, NULL, &waitfor);
1200 waitpid(child, &status, WNOHANG);
1205 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1211 #if defined(PERLIO_LAYERS)
1212 /* No more IO - including error messages ! */
1213 PerlIO_cleanup(aTHX);
1216 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1217 as currently layers use it rather than NULL as a marker
1218 for no arg - and will try and SvREFCNT_dec it.
1220 SvREFCNT(&PL_sv_undef) = 0;
1221 SvREADONLY_off(&PL_sv_undef);
1223 Safefree(PL_origfilename);
1224 PL_origfilename = NULL;
1225 Safefree(PL_reg_curpm);
1226 Safefree(PL_reg_poscache);
1227 free_tied_hv_pool();
1228 Safefree(PL_op_mask);
1229 Safefree(PL_psig_name);
1230 PL_psig_name = (SV**)NULL;
1231 PL_psig_ptr = (SV**)NULL;
1233 /* We need to NULL PL_psig_pend first, so that
1234 signal handlers know not to use it */
1235 int *psig_save = PL_psig_pend;
1236 PL_psig_pend = (int*)NULL;
1237 Safefree(psig_save);
1240 TAINTING_set(FALSE);
1241 TAINT_WARN_set(FALSE);
1242 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1245 DEBUG_P(debprofdump());
1247 #ifdef USE_REENTRANT_API
1248 Perl_reentrant_free(aTHX);
1253 while (PL_regmatch_slab) {
1254 regmatch_slab *s = PL_regmatch_slab;
1255 PL_regmatch_slab = PL_regmatch_slab->next;
1259 /* As the absolutely last thing, free the non-arena SV for mess() */
1262 /* we know that type == SVt_PVMG */
1264 /* it could have accumulated taint magic */
1267 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1268 moremagic = mg->mg_moremagic;
1269 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1271 Safefree(mg->mg_ptr);
1275 /* we know that type >= SVt_PV */
1276 SvPV_free(PL_mess_sv);
1277 Safefree(SvANY(PL_mess_sv));
1278 Safefree(PL_mess_sv);
1285 =for apidoc perl_free
1287 Releases a Perl interpreter. See L<perlembed>.
1297 PERL_ARGS_ASSERT_PERL_FREE;
1299 if (PL_veto_cleanup)
1302 #ifdef PERL_TRACK_MEMPOOL
1305 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1306 * value as we're probably hunting memory leaks then
1308 if (PL_perl_destruct_level == 0) {
1309 const U32 old_debug = PL_debug;
1310 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1311 thread at thread exit. */
1313 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1314 "free this thread's memory\n");
1315 PL_debug &= ~ DEBUG_m_FLAG;
1317 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1318 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1319 PL_debug = old_debug;
1324 #if defined(WIN32) || defined(NETWARE)
1325 # if defined(PERL_IMPLICIT_SYS)
1328 void *host = nw_internal_host;
1330 void *host = w32_internal_host;
1332 PerlMem_free(aTHXx);
1334 nw_delete_internal_host(host);
1336 win32_delete_internal_host(host);
1340 PerlMem_free(aTHXx);
1343 PerlMem_free(aTHXx);
1347 #if defined(USE_ITHREADS)
1348 /* provide destructors to clean up the thread key when libperl is unloaded */
1349 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1351 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1352 #pragma fini "perl_fini"
1353 #elif defined(__sun) && !defined(__GNUC__)
1354 #pragma fini (perl_fini)
1358 #if defined(__GNUC__)
1359 __attribute__((destructor))
1364 if (PL_curinterp && !PL_veto_cleanup)
1369 #endif /* THREADS */
1372 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1375 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1376 PL_exitlist[PL_exitlistlen].fn = fn;
1377 PL_exitlist[PL_exitlistlen].ptr = ptr;
1382 S_set_caret_X(pTHX) {
1384 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1386 SV *const caret_x = GvSV(tmpgv);
1388 sv_setpv(caret_x, os2_execname(aTHX));
1390 # ifdef USE_KERN_PROC_PATHNAME
1395 mib[2] = KERN_PROC_PATHNAME;
1398 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1399 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1400 sv_grow(caret_x, size);
1402 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1404 SvPOK_only(caret_x);
1405 SvCUR_set(caret_x, size - 1);
1410 # elif defined(USE_NSGETEXECUTABLEPATH)
1412 uint32_t size = sizeof(buf);
1414 _NSGetExecutablePath(buf, &size);
1415 if (size < MAXPATHLEN * MAXPATHLEN) {
1416 sv_grow(caret_x, size);
1417 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1418 char *const tidied = realpath(SvPVX(caret_x), NULL);
1420 sv_setpv(caret_x, tidied);
1423 SvPOK_only(caret_x);
1424 SvCUR_set(caret_x, size);
1429 # elif defined(HAS_PROCSELFEXE)
1430 char buf[MAXPATHLEN];
1431 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1433 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1434 includes a spurious NUL which will cause $^X to fail in system
1435 or backticks (this will prevent extensions from being built and
1436 many tests from working). readlink is not meant to add a NUL.
1437 Normal readlink works fine.
1439 if (len > 0 && buf[len-1] == '\0') {
1443 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1444 returning the text "unknown" from the readlink rather than the path
1445 to the executable (or returning an error from the readlink). Any
1446 valid path has a '/' in it somewhere, so use that to validate the
1447 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1449 if (len > 0 && memchr(buf, '/', len)) {
1450 sv_setpvn(caret_x, buf, len);
1454 /* Fallback to this: */
1455 sv_setpv(caret_x, PL_origargv[0]);
1461 =for apidoc perl_parse
1463 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1468 #define SET_CURSTASH(newstash) \
1469 if (PL_curstash != newstash) { \
1470 SvREFCNT_dec(PL_curstash); \
1471 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1475 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1482 PERL_ARGS_ASSERT_PERL_PARSE;
1483 #ifndef MULTIPLICITY
1484 PERL_UNUSED_ARG(my_perl);
1486 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1488 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1490 if (s && (atoi(s) == 1)) {
1491 unsigned char *seed= PERL_HASH_SEED;
1492 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1493 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1494 while (seed < seed_end) {
1495 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1497 PerlIO_printf(Perl_debug_log, "\n");
1500 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1504 if (PL_origalen != 0) {
1505 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1508 /* Set PL_origalen be the sum of the contiguous argv[]
1509 * elements plus the size of the env in case that it is
1510 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1511 * as the maximum modifiable length of $0. In the worst case
1512 * the area we are able to modify is limited to the size of
1513 * the original argv[0]. (See below for 'contiguous', though.)
1515 const char *s = NULL;
1518 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1519 /* Do the mask check only if the args seem like aligned. */
1521 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1523 /* See if all the arguments are contiguous in memory. Note
1524 * that 'contiguous' is a loose term because some platforms
1525 * align the argv[] and the envp[]. If the arguments look
1526 * like non-aligned, assume that they are 'strictly' or
1527 * 'traditionally' contiguous. If the arguments look like
1528 * aligned, we just check that they are within aligned
1529 * PTRSIZE bytes. As long as no system has something bizarre
1530 * like the argv[] interleaved with some other data, we are
1531 * fine. (Did I just evoke Murphy's Law?) --jhi */
1532 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1534 for (i = 1; i < PL_origargc; i++) {
1535 if ((PL_origargv[i] == s + 1
1537 || PL_origargv[i] == s + 2
1542 (PL_origargv[i] > s &&
1544 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1555 #ifndef PERL_USE_SAFE_PUTENV
1556 /* Can we grab env area too to be used as the area for $0? */
1557 if (s && PL_origenviron && !PL_use_safe_putenv) {
1558 if ((PL_origenviron[0] == s + 1)
1561 (PL_origenviron[0] > s &&
1562 PL_origenviron[0] <=
1563 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1566 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1567 s = PL_origenviron[0];
1570 my_setenv("NoNe SuCh", NULL);
1571 /* Force copy of environment. */
1572 for (i = 1; PL_origenviron[i]; i++) {
1573 if (PL_origenviron[i] == s + 1
1576 (PL_origenviron[i] > s &&
1577 PL_origenviron[i] <=
1578 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1581 s = PL_origenviron[i];
1589 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1591 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1596 /* Come here if running an undumped a.out. */
1598 PL_origfilename = savepv(argv[0]);
1599 PL_do_undump = FALSE;
1600 cxstack_ix = -1; /* start label stack again */
1602 assert (!TAINT_get);
1604 S_set_caret_X(aTHX);
1606 init_postdump_symbols(argc,argv,env);
1611 op_free(PL_main_root);
1612 PL_main_root = NULL;
1614 PL_main_start = NULL;
1615 SvREFCNT_dec(PL_main_cv);
1619 oldscope = PL_scopestack_ix;
1620 PL_dowarn = G_WARN_OFF;
1625 parse_body(env,xsinit);
1626 if (PL_unitcheckav) {
1627 call_list(oldscope, PL_unitcheckav);
1630 PERL_SET_PHASE(PERL_PHASE_CHECK);
1631 call_list(oldscope, PL_checkav);
1639 /* my_exit() was called */
1640 while (PL_scopestack_ix > oldscope)
1643 SET_CURSTASH(PL_defstash);
1644 if (PL_unitcheckav) {
1645 call_list(oldscope, PL_unitcheckav);
1648 PERL_SET_PHASE(PERL_PHASE_CHECK);
1649 call_list(oldscope, PL_checkav);
1654 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1662 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1663 miniperl, and we need to see those flags reflected in the values here. */
1665 /* What this returns is subject to change. Use the public interface in Config.
1668 S_Internals_V(pTHX_ CV *cv)
1671 #ifdef LOCAL_PATCH_COUNT
1672 const int local_patch_count = LOCAL_PATCH_COUNT;
1674 const int local_patch_count = 0;
1676 const int entries = 3 + local_patch_count;
1678 static const char non_bincompat_options[] =
1685 # ifdef PERL_DISABLE_PMC
1688 # ifdef PERL_DONT_CREATE_GVSV
1689 " PERL_DONT_CREATE_GVSV"
1691 # ifdef PERL_EXTERNAL_GLOB
1692 " PERL_EXTERNAL_GLOB"
1694 # ifdef PERL_IS_MINIPERL
1697 # ifdef PERL_MALLOC_WRAP
1700 # ifdef PERL_MEM_LOG
1703 # ifdef PERL_MEM_LOG_NOIMPL
1704 " PERL_MEM_LOG_NOIMPL"
1706 # ifdef PERL_PRESERVE_IVUV
1707 " PERL_PRESERVE_IVUV"
1709 # ifdef PERL_RELOCATABLE_INCPUSH
1710 " PERL_RELOCATABLE_INCPUSH"
1712 # ifdef PERL_USE_DEVEL
1715 # ifdef PERL_USE_SAFE_PUTENV
1716 " PERL_USE_SAFE_PUTENV"
1718 # ifdef UNLINK_ALL_VERSIONS
1719 " UNLINK_ALL_VERSIONS"
1721 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1722 " USE_ATTRIBUTES_FOR_PERLIO"
1724 # ifdef USE_FAST_STDIO
1730 # ifdef USE_LOCALE_CTYPE
1733 # ifdef USE_PERL_ATOF
1736 # ifdef USE_SITECUSTOMIZE
1737 " USE_SITECUSTOMIZE"
1740 PERL_UNUSED_ARG(cv);
1741 PERL_UNUSED_ARG(items);
1743 EXTEND(SP, entries);
1745 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1746 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1747 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1751 PUSHs(Perl_newSVpvn_flags(aTHX_
1752 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1755 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1759 PUSHs(&PL_sv_undef);
1762 for (i = 1; i <= local_patch_count; i++) {
1763 /* This will be an undef, if PL_localpatches[i] is NULL. */
1764 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1770 #define INCPUSH_UNSHIFT 0x01
1771 #define INCPUSH_ADD_OLD_VERS 0x02
1772 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1773 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1774 #define INCPUSH_NOT_BASEDIR 0x10
1775 #define INCPUSH_CAN_RELOCATE 0x20
1776 #define INCPUSH_ADD_SUB_DIRS \
1777 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1780 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1784 int argc = PL_origargc;
1785 char **argv = PL_origargv;
1786 const char *scriptname = NULL;
1787 VOL bool dosearch = FALSE;
1789 bool doextract = FALSE;
1790 const char *cddir = NULL;
1791 #ifdef USE_SITECUSTOMIZE
1792 bool minus_f = FALSE;
1794 SV *linestr_sv = NULL;
1795 bool add_read_e_script = FALSE;
1796 U32 lex_start_flags = 0;
1798 PERL_SET_PHASE(PERL_PHASE_START);
1804 for (argc--,argv++; argc > 0; argc--,argv++) {
1805 if (argv[0][0] != '-' || !argv[0][1])
1811 #ifndef PERL_STRICT_CR
1835 if ((s = moreswitches(s)))
1840 #if SILENT_NO_TAINT_SUPPORT
1841 /* silently ignore */
1842 #elif NO_TAINT_SUPPORT
1843 Perl_croak("This perl was compiled without taint support. "
1844 "Cowardly refusing to run with -t or -T flags");
1846 CHECK_MALLOC_TOO_LATE_FOR('t');
1847 if( !TAINTING_get ) {
1848 TAINT_WARN_set(TRUE);
1855 #if SILENT_NO_TAINT_SUPPORT
1856 /* silently ignore */
1857 #elif NO_TAINT_SUPPORT
1858 Perl_croak("This perl was compiled without taint support. "
1859 "Cowardly refusing to run with -t or -T flags");
1861 CHECK_MALLOC_TOO_LATE_FOR('T');
1863 TAINT_WARN_set(FALSE);
1872 forbid_setid('e', FALSE);
1874 PL_e_script = newSVpvs("");
1875 add_read_e_script = TRUE;
1878 sv_catpv(PL_e_script, s);
1880 sv_catpv(PL_e_script, argv[1]);
1884 Perl_croak(aTHX_ "No code specified for -%c", c);
1885 sv_catpvs(PL_e_script, "\n");
1889 #ifdef USE_SITECUSTOMIZE
1895 case 'I': /* -I handled both here and in moreswitches() */
1896 forbid_setid('I', FALSE);
1897 if (!*++s && (s=argv[1]) != NULL) {
1901 STRLEN len = strlen(s);
1902 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1905 Perl_croak(aTHX_ "No directory specified for -I");
1908 forbid_setid('S', FALSE);
1917 opts_prog = newSVpvs("use Config; Config::_V()");
1921 opts_prog = Perl_newSVpvf(aTHX_
1922 "use Config; Config::config_vars(qw%c%s%c)",
1926 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1927 /* don't look for script or read stdin */
1928 scriptname = BIT_BUCKET;
1940 if (!*++s || isSPACE(*s)) {
1944 /* catch use of gnu style long options.
1945 Both of these exit immediately. */
1946 if (strEQ(s, "version"))
1948 if (strEQ(s, "help"))
1953 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1964 #ifndef SECURE_INTERNAL_GETENV
1967 (s = PerlEnv_getenv("PERL5OPT")))
1971 if (*s == '-' && *(s+1) == 'T') {
1972 #if SILENT_NO_TAINT_SUPPORT
1973 /* silently ignore */
1974 #elif NO_TAINT_SUPPORT
1975 Perl_croak("This perl was compiled without taint support. "
1976 "Cowardly refusing to run with -t or -T flags");
1978 CHECK_MALLOC_TOO_LATE_FOR('T');
1980 TAINT_WARN_set(FALSE);
1984 char *popt_copy = NULL;
1997 if (!strchr("CDIMUdmtwW", *s))
1998 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2002 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2003 s = popt_copy + (s - d);
2011 #if SILENT_NO_TAINT_SUPPORT
2012 /* silently ignore */
2013 #elif NO_TAINT_SUPPORT
2014 Perl_croak("This perl was compiled without taint support. "
2015 "Cowardly refusing to run with -t or -T flags");
2017 if( !TAINTING_get) {
2018 TAINT_WARN_set(TRUE);
2030 /* Set $^X early so that it can be used for relocatable paths in @INC */
2031 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2032 assert (!TAINT_get);
2034 S_set_caret_X(aTHX);
2037 #if defined(USE_SITECUSTOMIZE)
2039 /* The games with local $! are to avoid setting errno if there is no
2040 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2041 ie a q() operator with a NUL byte as a the delimiter. This avoids
2042 problems with pathnames containing (say) ' */
2043 # ifdef PERL_IS_MINIPERL
2044 AV *const inc = GvAV(PL_incgv);
2045 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2048 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2050 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2055 /* SITELIB_EXP is a function call on Win32. */
2056 const char *const raw_sitelib = SITELIB_EXP;
2058 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2059 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2060 INCPUSH_CAN_RELOCATE);
2061 const char *const sitelib = SvPVX(sitelib_sv);
2062 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2064 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2067 assert (SvREFCNT(sitelib_sv) == 1);
2068 SvREFCNT_dec(sitelib_sv);
2075 scriptname = argv[0];
2078 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2080 else if (scriptname == NULL) {
2082 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2088 assert (!TAINT_get);
2092 bool suidscript = FALSE;
2094 rsfp = open_script(scriptname, dosearch, &suidscript);
2096 rsfp = PerlIO_stdin();
2097 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2100 validate_suid(rsfp);
2103 # if defined(SIGCHLD) || defined(SIGCLD)
2106 # define SIGCHLD SIGCLD
2108 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2109 if (sigstate == (Sighandler_t) SIG_IGN) {
2110 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2111 "Can't ignore signal CHLD, forcing to default");
2112 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2120 /* This will croak if suidscript is true, as -x cannot be used with
2122 forbid_setid('x', suidscript);
2123 /* Hence you can't get here if suidscript is true */
2125 linestr_sv = newSV_type(SVt_PV);
2126 lex_start_flags |= LEX_START_COPIED;
2127 find_beginning(linestr_sv, rsfp);
2128 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2129 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2133 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2134 CvUNIQUE_on(PL_compcv);
2136 CvPADLIST(PL_compcv) = pad_new(0);
2138 PL_isarev = newHV();
2141 boot_core_UNIVERSAL();
2143 newXS("Internals::V", S_Internals_V, __FILE__);
2146 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2148 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2154 # ifdef HAS_SOCKS5_INIT
2155 socks5_init(argv[0]);
2161 init_predump_symbols();
2162 /* init_postdump_symbols not currently designed to be called */
2163 /* more than once (ENV isn't cleared first, for example) */
2164 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2166 init_postdump_symbols(argc,argv,env);
2168 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2169 * or explicitly in some platforms.
2170 * locale.c:Perl_init_i18nl10n() if the environment
2171 * look like the user wants to use UTF-8. */
2172 #if defined(__SYMBIAN32__)
2173 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2175 # ifndef PERL_IS_MINIPERL
2177 /* Requires init_predump_symbols(). */
2178 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2183 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2184 * and the default open disciplines. */
2185 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2186 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2188 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2189 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2190 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2192 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2193 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2194 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2196 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2197 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2198 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2200 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2201 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2204 sv_setpvs(sv, ":utf8\0:utf8");
2206 sv_setpvs(sv, ":utf8\0");
2209 sv_setpvs(sv, "\0:utf8");
2218 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2219 if (strEQ(s, "unsafe"))
2220 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2221 else if (strEQ(s, "safe"))
2222 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2224 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2231 if (!TAINTING_get &&
2232 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2236 PL_xmlfp = PerlIO_stdout();
2238 PL_xmlfp = PerlIO_open(s, "w");
2240 Perl_croak(aTHX_ "Can't open %s", s);
2242 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2248 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2249 PL_madskills = atoi(s);
2250 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2255 lex_start(linestr_sv, rsfp, lex_start_flags);
2257 SvREFCNT_dec(linestr_sv);
2259 PL_subname = newSVpvs("main");
2261 if (add_read_e_script)
2262 filter_add(read_e_script, NULL);
2264 /* now parse the script */
2266 SETERRNO(0,SS_NORMAL);
2267 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2269 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2271 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2275 CopLINE_set(PL_curcop, 0);
2276 SET_CURSTASH(PL_defstash);
2278 SvREFCNT_dec(PL_e_script);
2286 SAVECOPFILE(PL_curcop);
2287 SAVECOPLINE(PL_curcop);
2288 gv_check(PL_defstash);
2297 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2298 dump_mstats("after compilation:");
2303 PL_restartjmpenv = NULL;
2309 =for apidoc perl_run
2311 Tells a Perl interpreter to run. See L<perlembed>.
2324 PERL_ARGS_ASSERT_PERL_RUN;
2325 #ifndef MULTIPLICITY
2326 PERL_UNUSED_ARG(my_perl);
2329 oldscope = PL_scopestack_ix;
2337 cxstack_ix = -1; /* start context stack again */
2339 case 0: /* normal completion */
2343 case 2: /* my_exit() */
2344 while (PL_scopestack_ix > oldscope)
2347 SET_CURSTASH(PL_defstash);
2348 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2349 PL_endav && !PL_minus_c) {
2350 PERL_SET_PHASE(PERL_PHASE_END);
2351 call_list(oldscope, PL_endav);
2354 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2355 dump_mstats("after execution: ");
2361 POPSTACK_TO(PL_mainstack);
2364 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2375 S_run_body(pTHX_ I32 oldscope)
2378 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2379 PL_sawampersand ? "Enabling" : "Omitting",
2380 (unsigned int)(PL_sawampersand)));
2382 if (!PL_restartop) {
2386 exit(0); /* less likely to core dump than my_exit(0) */
2390 if (DEBUG_x_TEST || DEBUG_B_TEST)
2391 dump_all_perl(!DEBUG_B_TEST);
2393 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2397 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2400 if (PERLDB_SINGLE && PL_DBsingle)
2401 sv_setiv(PL_DBsingle, 1);
2403 PERL_SET_PHASE(PERL_PHASE_INIT);
2404 call_list(oldscope, PL_initav);
2406 #ifdef PERL_DEBUG_READONLY_OPS
2407 if (PL_main_root && PL_main_root->op_slabbed)
2408 Slab_to_ro(OpSLAB(PL_main_root));
2414 PERL_SET_PHASE(PERL_PHASE_RUN);
2417 PL_restartjmpenv = NULL;
2418 PL_op = PL_restartop;
2422 else if (PL_main_start) {
2423 CvDEPTH(PL_main_cv) = 1;
2424 PL_op = PL_main_start;
2428 assert(0); /* NOTREACHED */
2432 =head1 SV Manipulation Functions
2434 =for apidoc p||get_sv
2436 Returns the SV of the specified Perl scalar. C<flags> are passed to
2437 C<gv_fetchpv>. If C<GV_ADD> is set and the
2438 Perl variable does not exist then it will be created. If C<flags> is zero
2439 and the variable does not exist then NULL is returned.
2445 Perl_get_sv(pTHX_ const char *name, I32 flags)
2449 PERL_ARGS_ASSERT_GET_SV;
2451 gv = gv_fetchpv(name, flags, SVt_PV);
2458 =head1 Array Manipulation Functions
2460 =for apidoc p||get_av
2462 Returns the AV of the specified Perl global or package array with the given
2463 name (so it won't work on lexical variables). C<flags> are passed
2464 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2465 Perl variable does not exist then it will be created. If C<flags> is zero
2466 and the variable does not exist then NULL is returned.
2468 Perl equivalent: C<@{"$name"}>.
2474 Perl_get_av(pTHX_ const char *name, I32 flags)
2476 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2478 PERL_ARGS_ASSERT_GET_AV;
2488 =head1 Hash Manipulation Functions
2490 =for apidoc p||get_hv
2492 Returns the HV of the specified Perl hash. C<flags> are passed to
2493 C<gv_fetchpv>. If C<GV_ADD> is set and the
2494 Perl variable does not exist then it will be created. If C<flags> is zero
2495 and the variable does not exist then NULL is returned.
2501 Perl_get_hv(pTHX_ const char *name, I32 flags)
2503 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2505 PERL_ARGS_ASSERT_GET_HV;
2515 =head1 CV Manipulation Functions
2517 =for apidoc p||get_cvn_flags
2519 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2520 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2521 exist then it will be declared (which has the same effect as saying
2522 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2523 then NULL is returned.
2525 =for apidoc p||get_cv
2527 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2533 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2535 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2537 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2539 /* XXX this is probably not what they think they're getting.
2540 * It has the same effect as "sub name;", i.e. just a forward
2542 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2543 return newSTUB(gv,0);
2550 /* Nothing in core calls this now, but we can't replace it with a macro and
2551 move it to mathoms.c as a macro would evaluate name twice. */
2553 Perl_get_cv(pTHX_ const char *name, I32 flags)
2555 PERL_ARGS_ASSERT_GET_CV;
2557 return get_cvn_flags(name, strlen(name), flags);
2560 /* Be sure to refetch the stack pointer after calling these routines. */
2564 =head1 Callback Functions
2566 =for apidoc p||call_argv
2568 Performs a callback to the specified named and package-scoped Perl subroutine
2569 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2571 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2577 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2579 /* See G_* flags in cop.h */
2580 /* null terminated arg list */
2585 PERL_ARGS_ASSERT_CALL_ARGV;
2590 mXPUSHs(newSVpv(*argv,0));
2595 return call_pv(sub_name, flags);
2599 =for apidoc p||call_pv
2601 Performs a callback to the specified Perl sub. See L<perlcall>.
2607 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2608 /* name of the subroutine */
2609 /* See G_* flags in cop.h */
2611 PERL_ARGS_ASSERT_CALL_PV;
2613 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2617 =for apidoc p||call_method
2619 Performs a callback to the specified Perl method. The blessed object must
2620 be on the stack. See L<perlcall>.
2626 Perl_call_method(pTHX_ const char *methname, I32 flags)
2627 /* name of the subroutine */
2628 /* See G_* flags in cop.h */
2631 PERL_ARGS_ASSERT_CALL_METHOD;
2633 len = strlen(methname);
2635 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2636 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
2639 /* May be called with any of a CV, a GV, or an SV containing the name. */
2641 =for apidoc p||call_sv
2643 Performs a callback to the Perl sub whose name is in the SV. See
2650 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2651 /* See G_* flags in cop.h */
2654 LOGOP myop; /* fake syntax tree node */
2659 bool oldcatch = CATCH_GET;
2661 OP* const oldop = PL_op;
2664 PERL_ARGS_ASSERT_CALL_SV;
2666 if (flags & G_DISCARD) {
2670 if (!(flags & G_WANT)) {
2671 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2676 Zero(&myop, 1, LOGOP);
2677 if (!(flags & G_NOARGS))
2678 myop.op_flags |= OPf_STACKED;
2679 myop.op_flags |= OP_GIMME_REVERSE(flags);
2683 EXTEND(PL_stack_sp, 1);
2684 *++PL_stack_sp = sv;
2686 oldscope = PL_scopestack_ix;
2688 if (PERLDB_SUB && PL_curstash != PL_debstash
2689 /* Handle first BEGIN of -d. */
2690 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2691 /* Try harder, since this may have been a sighandler, thus
2692 * curstash may be meaningless. */
2693 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2694 && !(flags & G_NODEBUG))
2695 myop.op_private |= OPpENTERSUB_DB;
2697 if (flags & G_METHOD) {
2698 Zero(&method_op, 1, UNOP);
2699 method_op.op_next = (OP*)&myop;
2700 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2701 method_op.op_type = OP_METHOD;
2702 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2703 myop.op_type = OP_ENTERSUB;
2704 PL_op = (OP*)&method_op;
2707 if (!(flags & G_EVAL)) {
2709 CALL_BODY_SUB((OP*)&myop);
2710 retval = PL_stack_sp - (PL_stack_base + oldmark);
2711 CATCH_SET(oldcatch);
2714 myop.op_other = (OP*)&myop;
2716 create_eval_scope(flags|G_FAKINGEVAL);
2724 CALL_BODY_SUB((OP*)&myop);
2725 retval = PL_stack_sp - (PL_stack_base + oldmark);
2726 if (!(flags & G_KEEPERR)) {
2734 /* my_exit() was called */
2735 SET_CURSTASH(PL_defstash);
2739 assert(0); /* NOTREACHED */
2742 PL_restartjmpenv = NULL;
2743 PL_op = PL_restartop;
2747 PL_stack_sp = PL_stack_base + oldmark;
2748 if ((flags & G_WANT) == G_ARRAY)
2752 *++PL_stack_sp = &PL_sv_undef;
2757 if (PL_scopestack_ix > oldscope)
2758 delete_eval_scope();
2762 if (flags & G_DISCARD) {
2763 PL_stack_sp = PL_stack_base + oldmark;
2772 /* Eval a string. The G_EVAL flag is always assumed. */
2775 =for apidoc p||eval_sv
2777 Tells Perl to C<eval> the string in the SV. It supports the same flags
2778 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2784 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2786 /* See G_* flags in cop.h */
2790 UNOP myop; /* fake syntax tree node */
2791 VOL I32 oldmark = SP - PL_stack_base;
2794 OP* const oldop = PL_op;
2797 PERL_ARGS_ASSERT_EVAL_SV;
2799 if (flags & G_DISCARD) {
2806 Zero(&myop, 1, UNOP);
2807 EXTEND(PL_stack_sp, 1);
2808 *++PL_stack_sp = sv;
2810 if (!(flags & G_NOARGS))
2811 myop.op_flags = OPf_STACKED;
2812 myop.op_type = OP_ENTEREVAL;
2813 myop.op_flags |= OP_GIMME_REVERSE(flags);
2814 if (flags & G_KEEPERR)
2815 myop.op_flags |= OPf_SPECIAL;
2816 if (PL_reg_state.re_reparsing)
2817 myop.op_private = OPpEVAL_COPHH;
2819 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2820 * before a PUSHEVAL, which corrupts the stack after a croak */
2821 TAINT_PROPER("eval_sv()");
2827 if (PL_op == (OP*)(&myop)) {
2828 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2830 goto fail; /* failed in compilation */
2833 retval = PL_stack_sp - (PL_stack_base + oldmark);
2834 if (!(flags & G_KEEPERR)) {
2842 /* my_exit() was called */
2843 SET_CURSTASH(PL_defstash);
2847 assert(0); /* NOTREACHED */
2850 PL_restartjmpenv = NULL;
2851 PL_op = PL_restartop;
2856 PL_stack_sp = PL_stack_base + oldmark;
2857 if ((flags & G_WANT) == G_ARRAY)
2861 *++PL_stack_sp = &PL_sv_undef;
2867 if (flags & G_DISCARD) {
2868 PL_stack_sp = PL_stack_base + oldmark;
2878 =for apidoc p||eval_pv
2880 Tells Perl to C<eval> the given string and return an SV* result.
2886 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2889 SV* sv = newSVpv(p, 0);
2891 PERL_ARGS_ASSERT_EVAL_PV;
2893 eval_sv(sv, G_SCALAR);
2902 /* just check empty string or undef? */
2903 if (croak_on_error) {
2904 SV * const errsv = ERRSV;
2905 if(SvTRUE_NN(errsv))
2906 /* replace with croak_sv? */
2907 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2913 /* Require a module. */
2916 =head1 Embedding Functions
2918 =for apidoc p||require_pv
2920 Tells Perl to C<require> the file named by the string argument. It is
2921 analogous to the Perl code C<eval "require '$file'">. It's even
2922 implemented that way; consider using load_module instead.
2927 Perl_require_pv(pTHX_ const char *pv)
2933 PERL_ARGS_ASSERT_REQUIRE_PV;
2935 PUSHSTACKi(PERLSI_REQUIRE);
2937 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2938 eval_sv(sv_2mortal(sv), G_DISCARD);
2944 S_usage(pTHX) /* XXX move this out into a module ? */
2946 /* This message really ought to be max 23 lines.
2947 * Removed -h because the user already knows that option. Others? */
2949 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2950 minimum of 509 character string literals. */
2951 static const char * const usage_msg[] = {
2952 " -0[octal] specify record separator (\\0, if no argument)\n"
2953 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2954 " -C[number/list] enables the listed Unicode features\n"
2955 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2956 " -d[:debugger] run program under debugger\n"
2957 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2958 " -e program one line of program (several -e's allowed, omit programfile)\n"
2959 " -E program like -e, but enables all optional features\n"
2960 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2961 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2962 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2963 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2964 " -l[octal] enable line ending processing, specifies line terminator\n"
2965 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2966 " -n assume \"while (<>) { ... }\" loop around program\n"
2967 " -p assume loop like -n but print line also, like sed\n"
2968 " -s enable rudimentary parsing for switches after programfile\n"
2969 " -S look for programfile using PATH environment variable\n",
2970 " -t enable tainting warnings\n"
2971 " -T enable tainting checks\n"
2972 " -u dump core after parsing program\n"
2973 " -U allow unsafe operations\n"
2974 " -v print version, patchlevel and license\n"
2975 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2976 " -w enable many useful warnings\n"
2977 " -W enable all warnings\n"
2978 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2979 " -X disable all warnings\n"
2981 "Run 'perldoc perl' for more help with Perl.\n\n",
2984 const char * const *p = usage_msg;
2985 PerlIO *out = PerlIO_stdout();
2988 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2991 PerlIO_puts(out, *p++);
2995 /* convert a string of -D options (or digits) into an int.
2996 * sets *s to point to the char after the options */
3000 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3002 static const char * const usage_msgd[] = {
3003 " Debugging flag values: (see also -d)\n"
3004 " p Tokenizing and parsing (with v, displays parse stack)\n"
3005 " s Stack snapshots (with v, displays all stacks)\n"
3006 " l Context (loop) stack processing\n"
3007 " t Trace execution\n"
3008 " o Method and overloading resolution\n",
3009 " c String/numeric conversions\n"
3010 " P Print profiling info, source file input state\n"
3011 " m Memory and SV allocation\n"
3012 " f Format processing\n"
3013 " r Regular expression parsing and execution\n"
3014 " x Syntax tree dump\n",
3015 " u Tainting checks\n"
3016 " H Hash dump -- usurps values()\n"
3017 " X Scratchpad allocation\n"
3019 " S Op slab allocation\n"
3021 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3022 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3023 " v Verbose: use in conjunction with other flags\n"
3024 " C Copy On Write\n"
3025 " A Consistency checks on internal structures\n"
3026 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3027 " M trace smart match resolution\n"
3028 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3033 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3036 /* if adding extra options, remember to update DEBUG_MASK */
3037 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
3039 for (; isALNUM(**s); (*s)++) {
3040 const char * const d = strchr(debopts,**s);
3042 i |= 1 << (d - debopts);
3043 else if (ckWARN_d(WARN_DEBUGGING))
3044 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3045 "invalid option -D%c, use -D'' to see choices\n", **s);
3048 else if (isDIGIT(**s)) {
3050 for (; isALNUM(**s); (*s)++) ;
3052 else if (givehelp) {
3053 const char *const *p = usage_msgd;
3054 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3057 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3058 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3059 "-Dp not implemented on this platform\n");
3065 /* This routine handles any switches that can be given during run */
3068 Perl_moreswitches(pTHX_ const char *s)
3072 const char option = *s; /* used to remember option in -m/-M code */
3074 PERL_ARGS_ASSERT_MORESWITCHES;
3082 SvREFCNT_dec(PL_rs);
3083 if (s[1] == 'x' && s[2]) {
3084 const char *e = s+=2;
3090 flags = PERL_SCAN_SILENT_ILLDIGIT;
3091 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3092 if (s + numlen < e) {
3093 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3097 PL_rs = newSVpvs("");
3098 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3099 tmps = (U8*)SvPVX(PL_rs);
3100 uvchr_to_utf8(tmps, rschar);
3101 SvCUR_set(PL_rs, UNISKIP(rschar));
3106 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3107 if (rschar & ~((U8)~0))
3108 PL_rs = &PL_sv_undef;
3109 else if (!rschar && numlen >= 2)
3110 PL_rs = newSVpvs("");
3112 char ch = (char)rschar;
3113 PL_rs = newSVpvn(&ch, 1);
3116 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3121 PL_unicode = parse_unicode_opts( (const char **)&s );
3122 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3128 while (*s && !isSPACE(*s)) ++s;
3129 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3140 forbid_setid('d', FALSE);
3143 /* -dt indicates to the debugger that threads will be used */
3144 if (*s == 't' && !isALNUM(s[1])) {
3146 my_setenv("PERL5DB_THREADED", "1");
3149 /* The following permits -d:Mod to accepts arguments following an =
3150 in the fashion that -MSome::Mod does. */
3151 if (*s == ':' || *s == '=') {
3158 sv = newSVpvs("no Devel::");
3160 sv = newSVpvs("use Devel::");
3164 end = s + strlen(s);
3166 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3167 while(isALNUM(*s) || *s==':') ++s;
3169 sv_catpvn(sv, start, end - start);
3171 sv_catpvn(sv, start, s-start);
3172 /* Don't use NUL as q// delimiter here, this string goes in the
3174 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3177 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3181 PL_perldb = PERLDB_ALL;
3188 forbid_setid('D', FALSE);
3190 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3191 #else /* !DEBUGGING */
3192 if (ckWARN_d(WARN_DEBUGGING))
3193 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3194 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3195 for (s++; isALNUM(*s); s++) ;
3202 Safefree(PL_inplace);
3203 #if defined(__CYGWIN__) /* do backup extension automagically */
3204 if (*(s+1) == '\0') {
3205 PL_inplace = savepvs(".bak");
3208 #endif /* __CYGWIN__ */
3210 const char * const start = ++s;
3211 while (*s && !isSPACE(*s))
3214 PL_inplace = savepvn(start, s - start);
3218 if (*s == '-') /* Additional switches on #! line. */
3222 case 'I': /* -I handled both here and in parse_body() */
3223 forbid_setid('I', FALSE);
3225 while (*s && isSPACE(*s))
3230 /* ignore trailing spaces (possibly followed by other switches) */
3232 for (e = p; *e && !isSPACE(*e); e++) ;
3236 } while (*p && *p != '-');
3238 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3244 Perl_croak(aTHX_ "No directory specified for -I");
3250 SvREFCNT_dec(PL_ors_sv);
3256 PL_ors_sv = newSVpvs("\n");
3257 numlen = 3 + (*s == '0');
3258 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3262 if (RsPARA(PL_rs)) {
3263 PL_ors_sv = newSVpvs("\n\n");
3266 PL_ors_sv = newSVsv(PL_rs);
3271 forbid_setid('M', FALSE); /* XXX ? */
3274 forbid_setid('m', FALSE); /* XXX ? */
3279 const char *use = "use ";
3281 /* -M-foo == 'no foo' */
3282 /* Leading space on " no " is deliberate, to make both
3283 possibilities the same length. */
3284 if (*s == '-') { use = " no "; ++s; }
3285 sv = newSVpvn(use,4);
3287 /* We allow -M'Module qw(Foo Bar)' */
3288 while(isALNUM(*s) || *s==':') {
3297 Perl_croak(aTHX_ "Module name required with -%c option",
3300 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3301 "contains single ':'",
3302 (int)(s - start), start, option);
3303 end = s + strlen(s);
3305 sv_catpvn(sv, start, end - start);
3306 if (option == 'm') {
3308 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3309 sv_catpvs( sv, " ()");
3312 sv_catpvn(sv, start, s-start);
3313 /* Use NUL as q''-delimiter. */
3314 sv_catpvs(sv, " split(/,/,q\0");
3316 sv_catpvn(sv, s, end - s);
3317 sv_catpvs(sv, "\0)");
3320 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3323 Perl_croak(aTHX_ "Missing argument to -%c", option);
3334 forbid_setid('s', FALSE);
3335 PL_doswitches = TRUE;
3340 #if SILENT_NO_TAINT_SUPPORT
3341 /* silently ignore */
3342 #elif NO_TAINT_SUPPORT
3343 Perl_croak("This perl was compiled without taint support. "
3344 "Cowardly refusing to run with -t or -T flags");
3352 PL_do_undump = TRUE;
3362 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3363 PL_dowarn |= G_WARN_ON;
3368 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3369 if (!specialWARN(PL_compiling.cop_warnings))
3370 PerlMemShared_free(PL_compiling.cop_warnings);
3371 PL_compiling.cop_warnings = pWARN_ALL ;
3375 PL_dowarn = G_WARN_ALL_OFF;
3376 if (!specialWARN(PL_compiling.cop_warnings))
3377 PerlMemShared_free(PL_compiling.cop_warnings);
3378 PL_compiling.cop_warnings = pWARN_NONE ;
3385 if (s[0] == '-') /* Additional switches on #! line. */
3390 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3396 #ifdef ALTERNATE_SHEBANG
3397 case 'S': /* OS/2 needs -S on "extproc" line. */
3400 case 'e': case 'f': case 'x': case 'E':
3401 #ifndef ALTERNATE_SHEBANG
3405 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3408 "Unrecognized switch: -%.1s (-h will show valid options)",s
3418 PerlIO * PIO_stdout;
3419 if (!sv_derived_from(PL_patchlevel, "version"))
3420 upg_version(PL_patchlevel, TRUE);
3423 SV* level= vstringify(PL_patchlevel);
3424 #ifdef PERL_PATCHNUM
3425 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3426 SV *num = newSVpvs(PERL_PATCHNUM "*");
3428 SV *num = newSVpvs(PERL_PATCHNUM);
3431 STRLEN level_len, num_len;
3432 char * level_str, * num_str;
3433 num_str = SvPV(num, num_len);
3434 level_str = SvPV(level, level_len);
3435 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3436 SvREFCNT_dec(level);
3439 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3444 PIO_stdout = PerlIO_stdout();
3445 PerlIO_printf(PIO_stdout,
3446 "\nThis is perl " STRINGIFY(PERL_REVISION)
3447 ", version " STRINGIFY(PERL_VERSION)
3448 ", subversion " STRINGIFY(PERL_SUBVERSION)
3449 " (%"SVf") built for " ARCHNAME, level
3451 SvREFCNT_dec(level);
3454 PIO_stdout = PerlIO_stdout();
3455 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3456 PerlIO_printf(PIO_stdout,
3457 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
3458 SVfARG(vstringify(PL_patchlevel))));
3459 PerlIO_printf(PIO_stdout,
3460 Perl_form(aTHX_ " built under %s at %s %s\n",
3461 OSNAME, __DATE__, __TIME__));
3462 PerlIO_printf(PIO_stdout,
3463 Perl_form(aTHX_ " OS Specific Release: %s\n",
3466 #if defined(LOCAL_PATCH_COUNT)
3467 if (LOCAL_PATCH_COUNT > 0)
3468 PerlIO_printf(PIO_stdout,
3469 "\n(with %d registered patch%s, "
3470 "see perl -V for more detail)",
3472 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3475 PerlIO_printf(PIO_stdout,
3476 "\n\nCopyright 1987-2012, Larry Wall\n");
3478 PerlIO_printf(PIO_stdout,
3479 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3482 PerlIO_printf(PIO_stdout,
3483 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3484 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3487 PerlIO_printf(PIO_stdout,
3488 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3489 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3492 PerlIO_printf(PIO_stdout,
3493 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3496 PerlIO_printf(PIO_stdout,
3497 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
3500 PerlIO_printf(PIO_stdout,
3501 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3504 PerlIO_printf(PIO_stdout,
3505 "WINCE port by Rainer Keuchel, 2001-2002\n"
3506 "Built on " __DATE__ " " __TIME__ "\n\n");
3509 #ifdef __SYMBIAN32__
3510 PerlIO_printf(PIO_stdout,
3511 "Symbian port by Nokia, 2004-2005\n");
3513 #ifdef BINARY_BUILD_NOTICE
3514 BINARY_BUILD_NOTICE;
3516 PerlIO_printf(PIO_stdout,
3518 Perl may be copied only under the terms of either the Artistic License or the\n\
3519 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3520 Complete documentation for Perl, including FAQ lists, should be found on\n\
3521 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3522 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3526 /* compliments of Tom Christiansen */
3528 /* unexec() can be found in the Gnu emacs distribution */
3529 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3532 #include <lib$routines.h>
3536 Perl_my_unexec(pTHX)
3538 PERL_UNUSED_CONTEXT;
3540 SV * prog = newSVpv(BIN_EXP, 0);
3541 SV * file = newSVpv(PL_origfilename, 0);
3545 sv_catpvs(prog, "/perl");
3546 sv_catpvs(file, ".perldump");
3548 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3549 /* unexec prints msg to stderr in case of failure */
3550 PerlProc_exit(status);
3553 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3554 # elif defined(WIN32) || defined(__CYGWIN__)
3555 Perl_croak(aTHX_ "dump is not supported");
3557 ABORT(); /* for use with undump */
3562 /* initialize curinterp */
3568 # define PERLVAR(prefix,var,type)
3569 # define PERLVARA(prefix,var,n,type)
3570 # if defined(PERL_IMPLICIT_CONTEXT)
3571 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3572 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3574 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3575 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3577 # include "intrpvar.h"
3583 # define PERLVAR(prefix,var,type)
3584 # define PERLVARA(prefix,var,n,type)
3585 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3586 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3587 # include "intrpvar.h"
3594 /* As these are inside a structure, PERLVARI isn't capable of initialising
3596 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3597 PL_reg_poscache = PL_reg_starttry = NULL;
3601 S_init_main_stash(pTHX)
3606 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3607 /* We know that the string "main" will be in the global shared string
3608 table, so it's a small saving to use it rather than allocate another
3610 PL_curstname = newSVpvs_share("main");
3611 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3612 /* If we hadn't caused another reference to "main" to be in the shared
3613 string table above, then it would be worth reordering these two,
3614 because otherwise all we do is delete "main" from it as a consequence
3615 of the SvREFCNT_dec, only to add it again with hv_name_set */
3616 SvREFCNT_dec(GvHV(gv));
3617 hv_name_set(PL_defstash, "main", 4, 0);
3618 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3620 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3622 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3623 GvMULTI_on(PL_incgv);
3624 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3625 GvMULTI_on(PL_hintgv);
3626 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3627 SvREFCNT_inc_simple_void(PL_defgv);
3628 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3629 SvREFCNT_inc_simple_void(PL_errgv);
3630 GvMULTI_on(PL_errgv);
3631 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3632 GvMULTI_on(PL_replgv);
3633 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3634 #ifdef PERL_DONT_CREATE_GVSV
3637 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3639 SET_CURSTASH(PL_defstash);
3640 CopSTASH_set(&PL_compiling, PL_defstash);
3641 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3642 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3644 /* We must init $/ before switches are processed. */
3645 sv_setpvs(get_sv("/", GV_ADD), "\n");
3649 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3652 PerlIO *rsfp = NULL;
3655 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3658 PL_origfilename = savepvs("-e");
3661 /* if find_script() returns, it returns a malloc()-ed value */
3662 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3664 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3665 const char *s = scriptname + 8;
3671 * Tell apart "normal" usage of fdscript, e.g.
3672 * with bash on FreeBSD:
3673 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3674 * from usage in suidperl.
3675 * Does any "normal" usage leave garbage after the number???
3676 * Is it a mistake to use a similar /dev/fd/ construct for
3681 * Be supersafe and do some sanity-checks.
3682 * Still, can we be sure we got the right thing?
3685 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3688 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3690 scriptname = savepv(s + 1);
3691 Safefree(PL_origfilename);
3692 PL_origfilename = (char *)scriptname;
3697 CopFILE_free(PL_curcop);
3698 CopFILE_set(PL_curcop, PL_origfilename);
3699 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3700 scriptname = (char *)"";
3701 if (fdscript >= 0) {
3702 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3704 else if (!*scriptname) {
3705 forbid_setid(0, *suidscript);
3709 #ifdef FAKE_BIT_BUCKET
3710 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3711 * is called) and still have the "-e" work. (Believe it or not,
3712 * a /dev/null is required for the "-e" to work because source
3713 * filter magic is used to implement it. ) This is *not* a general
3714 * replacement for a /dev/null. What we do here is create a temp
3715 * file (an empty file), open up that as the script, and then
3716 * immediately close and unlink it. Close enough for jazz. */
3717 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3718 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3719 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3720 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3721 FAKE_BIT_BUCKET_TEMPLATE
3723 const char * const err = "Failed to create a fake bit bucket";
3724 if (strEQ(scriptname, BIT_BUCKET)) {
3725 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3726 int tmpfd = mkstemp(tmpname);
3728 scriptname = tmpname;
3731 Perl_croak(aTHX_ err);
3734 scriptname = mktemp(tmpname);
3736 Perl_croak(aTHX_ err);
3741 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3742 #ifdef FAKE_BIT_BUCKET
3743 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3744 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3745 && strlen(scriptname) == sizeof(tmpname) - 1) {
3748 scriptname = BIT_BUCKET;
3752 /* PSz 16 Sep 03 Keep neat error message */
3754 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3756 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3757 CopFILE(PL_curcop), Strerror(errno));
3759 #if defined(HAS_FCNTL) && defined(F_SETFD)
3760 /* ensure close-on-exec */
3761 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3767 * I_SYSSTATVFS HAS_FSTATVFS
3769 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3770 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3771 * here so that metaconfig picks them up. */
3774 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3775 /* Don't even need this function. */
3778 S_validate_suid(pTHX_ PerlIO *rsfp)
3780 const UV my_uid = PerlProc_getuid();
3781 const UV my_euid = PerlProc_geteuid();
3782 const UV my_gid = PerlProc_getgid();
3783 const UV my_egid = PerlProc_getegid();
3785 PERL_ARGS_ASSERT_VALIDATE_SUID;
3787 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3790 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3791 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3793 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3796 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3797 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3798 /* not set-id, must be wrapped */
3801 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3804 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3810 PERL_ARGS_ASSERT_FIND_BEGINNING;
3812 /* skip forward in input to the real script? */
3815 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3816 Perl_croak(aTHX_ "No Perl script found in input\n");
3818 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3819 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3820 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3822 while (*s == ' ' || *s == '\t') s++;
3824 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3825 || s2[-1] == '_') s2--;
3826 if (strnEQ(s2-4,"perl",4))
3827 while ((s = moreswitches(s)))
3836 /* no need to do anything here any more if we don't
3838 #if !NO_TAINT_SUPPORT
3840 const UV my_uid = PerlProc_getuid();
3841 const UV my_euid = PerlProc_geteuid();
3842 const UV my_gid = PerlProc_getgid();
3843 const UV my_egid = PerlProc_getegid();
3845 /* Should not happen: */
3846 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3847 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3851 * Should go by suidscript, not uid!=euid: why disallow
3852 * system("ls") in scripts run from setuid things?
3853 * Or, is this run before we check arguments and set suidscript?
3854 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3855 * (We never have suidscript, can we be sure to have fdscript?)
3856 * Or must then go by UID checks? See comments in forbid_setid also.
3860 /* This is used very early in the lifetime of the program,
3861 * before even the options are parsed, so PL_tainting has
3862 * not been initialized properly. */
3864 Perl_doing_taint(int argc, char *argv[], char *envp[])
3866 #ifndef PERL_IMPLICIT_SYS
3867 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3868 * before we have an interpreter-- and the whole point of this
3869 * function is to be called at such an early stage. If you are on
3870 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3871 * "tainted because running with altered effective ids', you'll
3872 * have to add your own checks somewhere in here. The two most
3873 * known samples of 'implicitness' are Win32 and NetWare, neither
3874 * of which has much of concept of 'uids'. */
3875 int uid = PerlProc_getuid();
3876 int euid = PerlProc_geteuid();
3877 int gid = PerlProc_getgid();
3878 int egid = PerlProc_getegid();
3885 if (uid && (euid != uid || egid != gid))
3887 #endif /* !PERL_IMPLICIT_SYS */
3888 /* This is a really primitive check; environment gets ignored only
3889 * if -T are the first chars together; otherwise one gets
3890 * "Too late" message. */
3891 if ( argc > 1 && argv[1][0] == '-'
3892 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3897 /* Passing the flag as a single char rather than a string is a slight space
3898 optimisation. The only message that isn't /^-.$/ is
3899 "program input from stdin", which is substituted in place of '\0', which
3900 could never be a command line flag. */
3902 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3905 char string[3] = "-x";
3906 const char *message = "program input from stdin";
3913 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3914 if (PerlProc_getuid() != PerlProc_geteuid())
3915 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3916 if (PerlProc_getgid() != PerlProc_getegid())
3917 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3918 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3920 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3924 Perl_init_dbargs(pTHX)
3926 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3931 /* Someone has already created it.
3932 It might have entries, and if we just turn off AvREAL(), they will
3933 "leak" until global destruction. */
3935 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3936 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3938 AvREIFY_only(PL_dbargs);
3942 Perl_init_debugger(pTHX)
3945 HV * const ostash = PL_curstash;
3947 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3949 Perl_init_dbargs(aTHX);
3950 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
3951 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3952 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
3953 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3954 if (!SvIOK(PL_DBsingle))
3955 sv_setiv(PL_DBsingle, 0);
3956 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3957 if (!SvIOK(PL_DBtrace))
3958 sv_setiv(PL_DBtrace, 0);
3959 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3960 if (!SvIOK(PL_DBsignal))
3961 sv_setiv(PL_DBsignal, 0);
3962 SvREFCNT_dec(PL_curstash);
3963 PL_curstash = ostash;
3966 #ifndef STRESS_REALLOC
3967 #define REASONABLE(size) (size)
3969 #define REASONABLE(size) (1) /* unreasonable */
3973 Perl_init_stacks(pTHX)
3976 /* start with 128-item stack and 8K cxstack */
3977 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3978 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3979 PL_curstackinfo->si_type = PERLSI_MAIN;
3980 PL_curstack = PL_curstackinfo->si_stack;
3981 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3983 PL_stack_base = AvARRAY(PL_curstack);
3984 PL_stack_sp = PL_stack_base;
3985 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3987 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3990 PL_tmps_max = REASONABLE(128);
3992 Newx(PL_markstack,REASONABLE(32),I32);
3993 PL_markstack_ptr = PL_markstack;
3994 PL_markstack_max = PL_markstack + REASONABLE(32);
3998 Newx(PL_scopestack,REASONABLE(32),I32);
4000 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4002 PL_scopestack_ix = 0;
4003 PL_scopestack_max = REASONABLE(32);
4005 Newx(PL_savestack,REASONABLE(128),ANY);
4006 PL_savestack_ix = 0;
4007 PL_savestack_max = REASONABLE(128);
4016 while (PL_curstackinfo->si_next)
4017 PL_curstackinfo = PL_curstackinfo->si_next;
4018 while (PL_curstackinfo) {
4019 PERL_SI *p = PL_curstackinfo->si_prev;
4020 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4021 Safefree(PL_curstackinfo->si_cxstack);
4022 Safefree(PL_curstackinfo);
4023 PL_curstackinfo = p;
4025 Safefree(PL_tmps_stack);
4026 Safefree(PL_markstack);
4027 Safefree(PL_scopestack);
4029 Safefree(PL_scopestack_name);
4031 Safefree(PL_savestack);
4035 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4037 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4038 AV *const isa = GvAVn(gv);
4041 PERL_ARGS_ASSERT_POPULATE_ISA;
4043 if(AvFILLp(isa) != -1)
4046 /* NOTE: No support for tied ISA */
4048 va_start(args, len);
4050 const char *const parent = va_arg(args, const char*);
4055 parent_len = va_arg(args, size_t);
4057 /* Arguments are supplied with a trailing :: */
4058 assert(parent_len > 2);
4059 assert(parent[parent_len - 1] == ':');
4060 assert(parent[parent_len - 2] == ':');
4061 av_push(isa, newSVpvn(parent, parent_len - 2));
4062 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4069 S_init_predump_symbols(pTHX)
4075 sv_setpvs(get_sv("\"", GV_ADD), " ");
4076 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4079 /* Historically, PVIOs were blessed into IO::Handle, unless
4080 FileHandle was loaded, in which case they were blessed into
4081 that. Action at a distance.
4082 However, if we simply bless into IO::Handle, we break code
4083 that assumes that PVIOs will have (among others) a seek
4084 method. IO::File inherits from IO::Handle and IO::Seekable,
4085 and provides the needed methods. But if we simply bless into
4086 it, then we break code that assumed that by loading
4087 IO::Handle, *it* would work.
4088 So a compromise is to set up the correct @IO::File::ISA,
4089 so that code that does C<use IO::Handle>; will still work.
4092 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4093 STR_WITH_LEN("IO::Handle::"),
4094 STR_WITH_LEN("IO::Seekable::"),
4095 STR_WITH_LEN("Exporter::"),
4098 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4099 GvMULTI_on(PL_stdingv);
4100 io = GvIOp(PL_stdingv);
4101 IoTYPE(io) = IoTYPE_RDONLY;
4102 IoIFP(io) = PerlIO_stdin();
4103 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4105 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4107 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4110 IoTYPE(io) = IoTYPE_WRONLY;
4111 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4113 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4115 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4117 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4118 GvMULTI_on(PL_stderrgv);
4119 io = GvIOp(PL_stderrgv);
4120 IoTYPE(io) = IoTYPE_WRONLY;
4121 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4122 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4124 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4126 PL_statname = newSVpvs(""); /* last filename we did stat on */
4130 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4134 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4136 argc--,argv++; /* skip name of script */
4137 if (PL_doswitches) {
4138 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4142 if (argv[0][1] == '-' && !argv[0][2]) {
4146 if ((s = strchr(argv[0], '='))) {
4147 const char *const start_name = argv[0] + 1;
4148 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4149 TRUE, SVt_PV)), s + 1);
4152 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4155 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4156 GvMULTI_on(PL_argvgv);
4157 (void)gv_AVadd(PL_argvgv);
4158 av_clear(GvAVn(PL_argvgv));
4159 for (; argc > 0; argc--,argv++) {
4160 SV * const sv = newSVpv(argv[0],0);
4161 av_push(GvAVn(PL_argvgv),sv);
4162 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4163 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4166 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4167 (void)sv_utf8_decode(sv);
4171 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4172 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4173 "-i used with no filenames on the command line, "
4174 "reading from STDIN");
4178 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4183 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4185 PL_toptarget = newSV_type(SVt_PVIV);
4186 sv_setpvs(PL_toptarget, "");
4187 PL_bodytarget = newSV_type(SVt_PVIV);
4188 sv_setpvs(PL_bodytarget, "");
4189 PL_formtarget = PL_bodytarget;
4193 init_argv_symbols(argc,argv);
4195 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4196 sv_setpv(GvSV(tmpgv),PL_origfilename);
4198 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4200 bool env_is_not_environ;
4201 GvMULTI_on(PL_envgv);
4202 hv = GvHVn(PL_envgv);
4203 hv_magic(hv, NULL, PERL_MAGIC_env);
4205 #ifdef USE_ENVIRON_ARRAY
4206 /* Note that if the supplied env parameter is actually a copy
4207 of the global environ then it may now point to free'd memory
4208 if the environment has been modified since. To avoid this
4209 problem we treat env==NULL as meaning 'use the default'
4213 env_is_not_environ = env != environ;
4214 if (env_is_not_environ
4215 # ifdef USE_ITHREADS
4216 && PL_curinterp == aTHX
4225 for (; *env; env++) {
4228 if (!(s = strchr(old_var,'=')) || s == old_var)
4231 #if defined(MSDOS) && !defined(DJGPP)
4233 (void)strupr(old_var);
4236 sv = newSVpv(s+1, 0);
4237 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4238 if (env_is_not_environ)
4242 #endif /* USE_ENVIRON_ARRAY */
4243 #endif /* !PERL_MICRO */
4247 /* touch @F array to prevent spurious warnings 20020415 MJD */
4249 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4254 S_init_perllib(pTHX)
4258 const char *perl5lib = NULL;
4261 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4265 if (!TAINTING_get) {
4267 perl5lib = PerlEnv_getenv("PERL5LIB");
4269 * It isn't possible to delete an environment variable with
4270 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4271 * case we treat PERL5LIB as undefined if it has a zero-length value.
4273 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4274 if (perl5lib && *perl5lib != '\0')
4278 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4280 s = PerlEnv_getenv("PERLLIB");
4282 incpush_use_sep(s, 0, 0);
4285 /* Treat PERL5?LIB as a possible search list logical name -- the
4286 * "natural" VMS idiom for a Unix path string. We allow each
4287 * element to be a set of |-separated directories for compatibility.
4291 if (my_trnlnm("PERL5LIB",buf,0))
4293 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4294 } while (my_trnlnm("PERL5LIB",buf,++idx));
4296 while (my_trnlnm("PERLLIB",buf,idx++))
4297 incpush_use_sep(buf, 0, 0);
4302 #ifndef PERL_IS_MINIPERL
4303 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4304 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4306 /* Use the ~-expanded versions of APPLLIB (undocumented),
4307 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4310 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4311 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4315 /* sitearch is always relative to sitelib on Windows for
4316 * DLL-based path intuition to work correctly */
4317 # if !defined(WIN32)
4318 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4319 INCPUSH_CAN_RELOCATE);
4325 /* this picks up sitearch as well */
4326 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4328 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4330 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4334 #ifdef PERL_VENDORARCH_EXP
4335 /* vendorarch is always relative to vendorlib on Windows for
4336 * DLL-based path intuition to work correctly */
4337 # if !defined(WIN32)
4338 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4339 INCPUSH_CAN_RELOCATE);
4343 #ifdef PERL_VENDORLIB_EXP
4345 /* this picks up vendorarch as well */
4346 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4348 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4350 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4351 INCPUSH_CAN_RELOCATE);
4356 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4360 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4364 s = win32_get_privlib(PERL_FS_VERSION, &len);
4366 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4369 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4371 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4375 #ifdef PERL_OTHERLIBDIRS
4376 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4377 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4378 |INCPUSH_CAN_RELOCATE);
4381 if (!TAINTING_get) {
4384 * It isn't possible to delete an environment variable with
4385 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4386 * case we treat PERL5LIB as undefined if it has a zero-length value.
4388 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4389 if (perl5lib && *perl5lib != '\0')
4393 incpush_use_sep(perl5lib, 0,
4394 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4396 /* Treat PERL5?LIB as a possible search list logical name -- the
4397 * "natural" VMS idiom for a Unix path string. We allow each
4398 * element to be a set of |-separated directories for compatibility.
4402 if (my_trnlnm("PERL5LIB",buf,0))
4404 incpush_use_sep(buf, 0,
4405 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4406 } while (my_trnlnm("PERL5LIB",buf,++idx));
4410 /* Use the ~-expanded versions of APPLLIB (undocumented),
4411 SITELIB and VENDORLIB for older versions
4414 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4415 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4418 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4419 /* Search for version-specific dirs below here */
4420 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4421 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4425 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4426 /* Search for version-specific dirs below here */
4427 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4428 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4431 #ifdef PERL_OTHERLIBDIRS
4432 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4433 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4434 |INCPUSH_CAN_RELOCATE);
4436 #endif /* !PERL_IS_MINIPERL */
4439 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4442 #if defined(DOSISH) || defined(__SYMBIAN32__)
4443 # define PERLLIB_SEP ';'
4446 # define PERLLIB_SEP '|'
4448 # define PERLLIB_SEP ':'
4451 #ifndef PERLLIB_MANGLE
4452 # define PERLLIB_MANGLE(s,n) (s)
4455 #ifndef PERL_IS_MINIPERL
4456 /* Push a directory onto @INC if it exists.
4457 Generate a new SV if we do this, to save needing to copy the SV we push
4460 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4465 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4467 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4468 S_ISDIR(tmpstatbuf.st_mode)) {
4470 dir = newSVsv(stem);
4472 /* Truncate dir back to stem. */
4473 SvCUR_set(dir, SvCUR(stem));
4480 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4482 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4485 PERL_ARGS_ASSERT_MAYBERELOCATE;
4489 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4490 defined to so something (in os2/os2.c), but the code has been
4491 this way, ignoring any possible changed of length, since
4492 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4494 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4496 libdir = newSVpv(PERLLIB_MANGLE(dir, 0), 0);
4503 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4505 while (unix[len-1] == '/') len--; /* Cosmetic */
4506 sv_usepvn(libdir,unix,len);
4509 PerlIO_printf(Perl_error_log,
4510 "Failed to unixify @INC element \"%s\"\n",
4511 SvPV_nolen_const(libdir));
4515 /* Do the if() outside the #ifdef to avoid warnings about an unused
4518 #ifdef PERL_RELOCATABLE_INC
4520 * Relocatable include entries are marked with a leading .../
4523 * 0: Remove that leading ".../"
4524 * 1: Remove trailing executable name (anything after the last '/')
4525 * from the perl path to give a perl prefix
4527 * While the @INC element starts "../" and the prefix ends with a real
4528 * directory (ie not . or ..) chop that real directory off the prefix
4529 * and the leading "../" from the @INC element. ie a logical "../"
4531 * Finally concatenate the prefix and the remainder of the @INC element
4532 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4533 * generates /usr/local/lib/perl5
4535 const char *libpath = SvPVX(libdir);
4536 STRLEN libpath_len = SvCUR(libdir);
4537 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4539 SV * const caret_X = get_sv("\030", 0);
4540 /* Going to use the SV just as a scratch buffer holding a C
4546 /* $^X is *the* source of taint if tainting is on, hence
4547 SvPOK() won't be true. */
4549 assert(SvPOKp(caret_X));
4550 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4552 /* Firstly take off the leading .../
4553 If all else fail we'll do the paths relative to the current
4555 sv_chop(libdir, libpath + 4);
4556 /* Don't use SvPV as we're intentionally bypassing taining,
4557 mortal copies that the mg_get of tainting creates, and
4558 corruption that seems to come via the save stack.
4559 I guess that the save stack isn't correctly set up yet. */
4560 libpath = SvPVX(libdir);
4561 libpath_len = SvCUR(libdir);
4563 /* This would work more efficiently with memrchr, but as it's
4564 only a GNU extension we'd need to probe for it and
4565 implement our own. Not hard, but maybe not worth it? */
4567 prefix = SvPVX(prefix_sv);
4568 lastslash = strrchr(prefix, '/');
4570 /* First time in with the *lastslash = '\0' we just wipe off
4571 the trailing /perl from (say) /usr/foo/bin/perl
4575 while ((*lastslash = '\0'), /* Do that, come what may. */
4576 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4577 && (lastslash = strrchr(prefix, '/')))) {
4578 if (lastslash[1] == '\0'
4579 || (lastslash[1] == '.'
4580 && (lastslash[2] == '/' /* ends "/." */
4581 || (lastslash[2] == '/'
4582 && lastslash[3] == '/' /* or "/.." */
4584 /* Prefix ends "/" or "/." or "/..", any of which
4585 are fishy, so don't do any more logical cleanup.
4589 /* Remove leading "../" from path */
4592 /* Next iteration round the loop removes the last
4593 directory name from prefix by writing a '\0' in
4594 the while clause. */
4596 /* prefix has been terminated with a '\0' to the correct
4597 length. libpath points somewhere into the libdir SV.
4598 We need to join the 2 with '/' and drop the result into
4600 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4601 SvREFCNT_dec(libdir);
4602 /* And this is the new libdir. */
4605 (PerlProc_getuid() != PerlProc_geteuid() ||
4606 PerlProc_getgid() != PerlProc_getegid())) {
4607 /* Need to taint relocated paths if running set ID */
4608 SvTAINTED_on(libdir);
4611 SvREFCNT_dec(prefix_sv);
4619 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4622 #ifndef PERL_IS_MINIPERL
4623 const U8 using_sub_dirs
4624 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4625 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4626 const U8 add_versioned_sub_dirs
4627 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4628 const U8 add_archonly_sub_dirs
4629 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4630 #ifdef PERL_INC_VERSION_LIST
4631 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4634 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4635 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4636 AV *const inc = GvAVn(PL_incgv);
4638 PERL_ARGS_ASSERT_INCPUSH;
4641 /* Could remove this vestigial extra block, if we don't mind a lot of
4642 re-indenting diff noise. */
4644 SV *const libdir = mayberelocate(dir, len, flags);
4645 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4646 arranged to unshift #! line -I onto the front of @INC. However,
4647 -I can add version and architecture specific libraries, and they
4648 need to go first. The old code assumed that it was always
4649 pushing. Hence to make it work, need to push the architecture
4650 (etc) libraries onto a temporary array, then "unshift" that onto
4651 the front of @INC. */
4652 #ifndef PERL_IS_MINIPERL
4653 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4656 * BEFORE pushing libdir onto @INC we may first push version- and
4657 * archname-specific sub-directories.
4659 if (using_sub_dirs) {
4660 SV *subdir = newSVsv(libdir);
4661 #ifdef PERL_INC_VERSION_LIST
4662 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4663 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4664 const char * const *incver;
4667 if (add_versioned_sub_dirs) {
4668 /* .../version/archname if -d .../version/archname */
4669 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4670 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4672 /* .../version if -d .../version */
4673 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4674 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4677 #ifdef PERL_INC_VERSION_LIST
4679 for (incver = incverlist; *incver; incver++) {
4680 /* .../xxx if -d .../xxx */
4681 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4682 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4687 if (add_archonly_sub_dirs) {
4688 /* .../archname if -d .../archname */
4689 sv_catpvs(subdir, "/" ARCHNAME);
4690 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4694 assert (SvREFCNT(subdir) == 1);
4695 SvREFCNT_dec(subdir);
4697 #endif /* !PERL_IS_MINIPERL */
4698 /* finally add this lib directory at the end of @INC */
4700 #ifdef PERL_IS_MINIPERL
4701 const U32 extra = 0;
4703 U32 extra = av_len(av) + 1;
4705 av_unshift(inc, extra + push_basedir);
4707 av_store(inc, extra, libdir);
4708 #ifndef PERL_IS_MINIPERL
4710 /* av owns a reference, av_store() expects to be donated a
4711 reference, and av expects to be sane when it's cleared.
4712 If I wanted to be naughty and wrong, I could peek inside the
4713 implementation of av_clear(), realise that it uses
4714 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4715 and so directly steal from it (with a memcpy() to inc, and
4716 then memset() to NULL them out. But people copy code from the
4717 core expecting it to be best practise, so let's use the API.
4718 Although studious readers will note that I'm not checking any
4720 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4725 else if (push_basedir) {
4726 av_push(inc, libdir);
4729 if (!push_basedir) {
4730 assert (SvREFCNT(libdir) == 1);
4731 SvREFCNT_dec(libdir);
4737 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4741 /* This logic has been broken out from S_incpush(). It may be possible to
4744 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4746 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4747 * argument to incpush_use_sep. This allows creation of relocatable
4748 * Perl distributions that patch the binary at install time. Those
4749 * distributions will have to provide their own relocation tools; this
4750 * is not a feature otherwise supported by core Perl.
4752 #ifndef PERL_RELOCATABLE_INCPUSH
4759 /* Break at all separators */
4760 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4762 /* skip any consecutive separators */
4764 /* Uncomment the next line for PATH semantics */
4765 /* But you'll need to write tests */
4766 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4768 incpush(p, (STRLEN)(s - p), flags);
4773 incpush(p, (STRLEN)(end - p), flags);
4778 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4782 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4788 PERL_ARGS_ASSERT_CALL_LIST;
4790 while (av_len(paramList) >= 0) {
4791 cv = MUTABLE_CV(av_shift(paramList));
4793 if (paramList == PL_beginav) {
4794 /* save PL_beginav for compiler */
4795 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4797 else if (paramList == PL_checkav) {
4798 /* save PL_checkav for compiler */
4799 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4801 else if (paramList == PL_unitcheckav) {
4802 /* save PL_unitcheckav for compiler */
4803 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4814 PL_madskills |= 16384;
4819 PL_madskills &= ~16384;
4822 (void)SvPV_const(atsv, len);
4824 PL_curcop = &PL_compiling;
4825 CopLINE_set(PL_curcop, oldline);
4826 if (paramList == PL_beginav)
4827 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4829 Perl_sv_catpvf(aTHX_ atsv,
4830 "%s failed--call queue aborted",
4831 paramList == PL_checkav ? "CHECK"
4832 : paramList == PL_initav ? "INIT"
4833 : paramList == PL_unitcheckav ? "UNITCHECK"
4835 while (PL_scopestack_ix > oldscope)
4838 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4845 /* my_exit() was called */
4846 while (PL_scopestack_ix > oldscope)
4849 SET_CURSTASH(PL_defstash);
4850 PL_curcop = &PL_compiling;
4851 CopLINE_set(PL_curcop, oldline);
4854 assert(0); /* NOTREACHED */
4857 PL_curcop = &PL_compiling;
4858 CopLINE_set(PL_curcop, oldline);
4861 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4870 Perl_my_exit(pTHX_ U32 status)
4881 STATUS_EXIT_SET(status);
4888 Perl_my_failure_exit(pTHX)
4892 /* We have been called to fall on our sword. The desired exit code
4893 * should be already set in STATUS_UNIX, but could be shifted over
4894 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4897 * If an error code has not been set, then force the issue.
4899 if (MY_POSIX_EXIT) {
4901 /* According to the die_exit.t tests, if errno is non-zero */
4902 /* It should be used for the error status. */
4904 if (errno == EVMSERR) {
4905 STATUS_NATIVE = vaxc$errno;
4908 /* According to die_exit.t tests, if the child_exit code is */
4909 /* also zero, then we need to exit with a code of 255 */
4910 if ((errno != 0) && (errno < 256))
4911 STATUS_UNIX_EXIT_SET(errno);
4912 else if (STATUS_UNIX < 255) {
4913 STATUS_UNIX_EXIT_SET(255);
4918 /* The exit code could have been set by $? or vmsish which
4919 * means that it may not have fatal set. So convert
4920 * success/warning codes to fatal with out changing
4921 * the POSIX status code. The severity makes VMS native
4922 * status handling work, while UNIX mode programs use the
4923 * the POSIX exit codes.
4925 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4926 STATUS_NATIVE &= STS$M_COND_ID;
4927 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4931 /* Traditionally Perl on VMS always expects a Fatal Error. */
4932 if (vaxc$errno & 1) {
4934 /* So force success status to failure */
4935 if (STATUS_NATIVE & 1)
4940 STATUS_UNIX = EINTR; /* In case something cares */
4945 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4947 /* Encode the severity code */
4948 severity = STATUS_NATIVE & STS$M_SEVERITY;
4949 STATUS_UNIX = (severity ? severity : 1) << 8;
4951 /* Perl expects this to be a fatal error */
4952 if (severity != STS$K_SEVERE)
4961 STATUS_UNIX_SET(errno);
4963 exitstatus = STATUS_UNIX >> 8;
4964 if (exitstatus & 255)
4965 STATUS_UNIX_SET(exitstatus);
4967 STATUS_UNIX_SET(255);
4974 S_my_exit_jump(pTHX)
4979 SvREFCNT_dec(PL_e_script);
4983 POPSTACK_TO(PL_mainstack);
4991 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4994 const char * const p = SvPVX_const(PL_e_script);
4995 const char *nl = strchr(p, '\n');
4997 PERL_UNUSED_ARG(idx);
4998 PERL_UNUSED_ARG(maxlen);
5000 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5002 filter_del(read_e_script);
5005 sv_catpvn(buf_sv, p, nl-p);
5006 sv_chop(PL_e_script, nl);
5012 * c-indentation-style: bsd
5014 * indent-tabs-mode: nil
5017 * ex: set ts=8 sts=4 sw=4 et: