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ANSI-clean? (was Re: [PATCH] COW for ithreads)
[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW		 1/* pp_sys.c
2 *
be3c0a43 3 * Copyright (c) 1991-2002, Larry Wall
a0d0e21e
LW		 4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
7 *
8 */
9
10/*
11 * But only a short way ahead its floor and the walls on either side were
12 * cloven by a great fissure, out of which the red glare came, now leaping
13 * up, now dying down into darkness; and all the while far below there was
14 * a rumour and a trouble as of great engines throbbing and labouring.
15 */
16
17#include "EXTERN.h"
864dbfa3 18#define PERL_IN_PP_SYS_C
a0d0e21e
LW		 19#include "perl.h"
20
f1066039
JH		 21#ifdef I_SHADOW
22/* Shadow password support for solaris - pdo@cs.umd.edu
23 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH		 24 * The API is from SysV.
25 *
26 * There are at least two more shadow interfaces,
27 * see the comments in pp_gpwent().
28 *
29 * --jhi */
30# ifdef __hpux__
c529f79d 31/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 32 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH		 33# undef MAXINT
34# endif
35# include <shadow.h>
8c0bfa08
PB		 36#endif
37
301e8125
NIS		 38#ifdef HAS_SYSCALL
39#ifdef __cplusplus
8ac85365
NIS		 40extern "C" int syscall(unsigned long,...);
41#endif
42#endif
43
76c32331 44#ifdef I_SYS_WAIT
45# include <sys/wait.h>
46#endif
47
48#ifdef I_SYS_RESOURCE
49# include <sys/resource.h>
16d20bd9 50#endif
a0d0e21e 51
2986a63f
JH		 52#ifdef NETWARE
53NETDB_DEFINE_CONTEXT
54#endif
55
a0d0e21e 56#ifdef HAS_SELECT
1e743fda
JH		 57# ifdef I_SYS_SELECT
58# include <sys/select.h>
59# endif
a0d0e21e 60#endif
a0d0e21e 61
dc45a647
MB		 62/* XXX Configure test needed.
63 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS		 64 applications, see "extern int errno in perl.h". Creating such
65 a test requires taking into account the differences between
66 compiling multithreaded and singlethreaded ($ccflags et al).
67 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 68*/
cb50131a 69#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW		 70extern int h_errno;
71#endif
72
73#ifdef HAS_PASSWD
74# ifdef I_PWD
75# include <pwd.h>
76# else
fd8cd3a3 77# if !defined(VMS)
20ce7b12
GS		 78 struct passwd *getpwnam (char *);
79 struct passwd *getpwuid (Uid_t);
fd8cd3a3 80# endif
a0d0e21e 81# endif
28e8609d 82# ifdef HAS_GETPWENT
10bc17b6 83#ifndef getpwent
20ce7b12 84 struct passwd *getpwent (void);
c2a8f790
JH		 85#elif defined (VMS) && defined (my_getpwent)
86 struct passwd *Perl_my_getpwent (void);
10bc17b6 87#endif
28e8609d 88# endif
a0d0e21e
LW		 89#endif
90
91#ifdef HAS_GROUP
92# ifdef I_GRP
93# include <grp.h>
94# else
20ce7b12
GS		 95 struct group *getgrnam (char *);
96 struct group *getgrgid (Gid_t);
a0d0e21e 97# endif
28e8609d 98# ifdef HAS_GETGRENT
10bc17b6 99#ifndef getgrent
20ce7b12 100 struct group *getgrent (void);
10bc17b6 101#endif
28e8609d 102# endif
a0d0e21e
LW		 103#endif
104
105#ifdef I_UTIME
3730b96e 106# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 107# include <sys/utime.h>
108# else
109# include <utime.h>
110# endif
a0d0e21e 111#endif
a0d0e21e 112
cbdc8872 113#ifdef HAS_CHSIZE
cd52b7b2 114# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
115# undef my_chsize
116# endif
6ad3d225 117# define my_chsize PerlLIO_chsize
cbdc8872 118#endif
119
ff68c719 120#ifdef HAS_FLOCK
121# define FLOCK flock
122#else /* no flock() */
123
36477c24 124 /* fcntl.h might not have been included, even if it exists, because
125 the current Configure only sets I_FCNTL if it's needed to pick up
126 the *_OK constants. Make sure it has been included before testing
127 the fcntl() locking constants. */
128# if defined(HAS_FCNTL) && !defined(I_FCNTL)
129# include <fcntl.h>
130# endif
131
9d9004a9 132# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 133# define FLOCK fcntl_emulate_flock
134# define FCNTL_EMULATE_FLOCK
135# else /* no flock() or fcntl(F_SETLK,...) */
136# ifdef HAS_LOCKF
137# define FLOCK lockf_emulate_flock
138# define LOCKF_EMULATE_FLOCK
139# endif /* lockf */
140# endif /* no flock() or fcntl(F_SETLK,...) */
141
142# ifdef FLOCK
20ce7b12 143 static int FLOCK (int, int);
ff68c719 144
145 /*
146 * These are the flock() constants. Since this sytems doesn't have
147 * flock(), the values of the constants are probably not available.
148 */
149# ifndef LOCK_SH
150# define LOCK_SH 1
151# endif
152# ifndef LOCK_EX
153# define LOCK_EX 2
154# endif
155# ifndef LOCK_NB
156# define LOCK_NB 4
157# endif
158# ifndef LOCK_UN
159# define LOCK_UN 8
160# endif
161# endif /* emulating flock() */
162
163#endif /* no flock() */
55497cff 164
85ab1d1d
JH		 165#define ZBTLEN 10
166static char zero_but_true[ZBTLEN + 1] = "0 but true";
167
5ff3f7a4
GS		 168#if defined(I_SYS_ACCESS) && !defined(R_OK)
169# include <sys/access.h>
170#endif
171
c529f79d
CB		 172#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
173# define FD_CLOEXEC 1 /* NeXT needs this */
174#endif
175
a4af207c
JH		 176#include "reentr.h"
177
5ff3f7a4
GS		 178#undef PERL_EFF_ACCESS_R_OK /* EFFective uid/gid ACCESS R_OK */
179#undef PERL_EFF_ACCESS_W_OK
180#undef PERL_EFF_ACCESS_X_OK
181
182/* F_OK unused: if stat() cannot find it... */
183
184#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 185 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
5ff3f7a4
GS		 186# define PERL_EFF_ACCESS_R_OK(p) (access((p), R_OK | EFF_ONLY_OK))
187# define PERL_EFF_ACCESS_W_OK(p) (access((p), W_OK | EFF_ONLY_OK))
188# define PERL_EFF_ACCESS_X_OK(p) (access((p), X_OK | EFF_ONLY_OK))
189#endif
190
191#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_EACCESS)
3813c136 192# ifdef I_SYS_SECURITY
5ff3f7a4
GS		 193# include <sys/security.h>
194# endif
c955f117
JH		 195# ifdef ACC_SELF
196 /* HP SecureWare */
197# define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK, ACC_SELF))
198# define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK, ACC_SELF))
199# define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK, ACC_SELF))
200# else
201 /* SCO */
202# define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK))
203# define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK))
204# define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK))
205# endif
5ff3f7a4
GS		 206#endif
207
208#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 209 /* AIX */
5ff3f7a4
GS		 210# define PERL_EFF_ACCESS_R_OK(p) (accessx((p), R_OK, ACC_SELF))
211# define PERL_EFF_ACCESS_W_OK(p) (accessx((p), W_OK, ACC_SELF))
212# define PERL_EFF_ACCESS_X_OK(p) (accessx((p), X_OK, ACC_SELF))
213#endif
214
327c3667
GS		 215#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) \
216 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
217 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 218/* The Hard Way. */
327c3667 219STATIC int
7f4774ae 220S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 221{
5ff3f7a4
GS		 222 Uid_t ruid = getuid();
223 Uid_t euid = geteuid();
224 Gid_t rgid = getgid();
225 Gid_t egid = getegid();
226 int res;
227
146174a9 228 LOCK_CRED_MUTEX;
5ff3f7a4 229#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 230 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 231#else
232#ifdef HAS_SETREUID
233 if (setreuid(euid, ruid))
234#else
235#ifdef HAS_SETRESUID
236 if (setresuid(euid, ruid, (Uid_t)-1))
237#endif
238#endif
cea2e8a9 239 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 240#endif
241
242#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 243 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS		 244#else
245#ifdef HAS_SETREGID
246 if (setregid(egid, rgid))
247#else
248#ifdef HAS_SETRESGID
249 if (setresgid(egid, rgid, (Gid_t)-1))
250#endif
251#endif
cea2e8a9 252 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 253#endif
254
255 res = access(path, mode);
256
257#ifdef HAS_SETREUID
258 if (setreuid(ruid, euid))
259#else
260#ifdef HAS_SETRESUID
261 if (setresuid(ruid, euid, (Uid_t)-1))
262#endif
263#endif
cea2e8a9 264 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 265
266#ifdef HAS_SETREGID
267 if (setregid(rgid, egid))
268#else
269#ifdef HAS_SETRESGID
270 if (setresgid(rgid, egid, (Gid_t)-1))
271#endif
272#endif
cea2e8a9 273 Perl_croak(aTHX_ "leaving effective gid failed");
146174a9 274 UNLOCK_CRED_MUTEX;
5ff3f7a4
GS		 275
276 return res;
277}
278# define PERL_EFF_ACCESS_R_OK(p) (emulate_eaccess((p), R_OK))
279# define PERL_EFF_ACCESS_W_OK(p) (emulate_eaccess((p), W_OK))
280# define PERL_EFF_ACCESS_X_OK(p) (emulate_eaccess((p), X_OK))
281#endif
282
283#if !defined(PERL_EFF_ACCESS_R_OK)
76ffd3b9
IZ		 284/* With it or without it: anyway you get a warning: either that
285 it is unused, or it is declared static and never defined.
286 */
327c3667 287STATIC int
7f4774ae 288S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 289{
cea2e8a9 290 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 291 /*NOTREACHED*/
292 return -1;
293}
294#endif
295
a0d0e21e
LW		 296PP(pp_backtick)
297{
39644a26 298 dSP; dTARGET;
760ac839 299 PerlIO *fp;
2d8e6c8d
GS		 300 STRLEN n_a;
301 char *tmps = POPpx;
54310121 302 I32 gimme = GIMME_V;
16fe6d59 303 char *mode = "r";
54310121 304
a0d0e21e 305 TAINT_PROPER("``");
16fe6d59
GS		 306 if (PL_op->op_private & OPpOPEN_IN_RAW)
307 mode = "rb";
308 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
309 mode = "rt";
310 fp = PerlProc_popen(tmps, mode);
a0d0e21e 311 if (fp) {
ac27b0f5
NIS		 312 char *type = NULL;
313 if (PL_curcop->cop_io) {
314 type = SvPV_nolen(PL_curcop->cop_io);
315 }
ac27b0f5
NIS		 316 if (type && *type)
317 PerlIO_apply_layers(aTHX_ fp,mode,type);
318
54310121 319 if (gimme == G_VOID) {
96827780
MB		 320 char tmpbuf[256];
321 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
54310121 322 /*SUPPRESS 530*/
323 ;
324 }
325 else if (gimme == G_SCALAR) {
fa326138
RG		 326 SV *oldrs = PL_rs;
327 PL_rs = &PL_sv_undef;
aa689395 328 sv_setpv(TARG, ""); /* note that this preserves previous buffer */
a0d0e21e
LW		 329 while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
330 /*SUPPRESS 530*/
331 ;
fa326138 332 PL_rs = oldrs;
a0d0e21e 333 XPUSHs(TARG);
aa689395 334 SvTAINTED_on(TARG);
a0d0e21e
LW		 335 }
336 else {
337 SV *sv;
338
339 for (;;) {
8d6dde3e 340 sv = NEWSV(56, 79);
a0d0e21e
LW		 341 if (sv_gets(sv, fp, 0) == Nullch) {
342 SvREFCNT_dec(sv);
343 break;
344 }
345 XPUSHs(sv_2mortal(sv));
346 if (SvLEN(sv) - SvCUR(sv) > 20) {
347 SvLEN_set(sv, SvCUR(sv)+1);
348 Renew(SvPVX(sv), SvLEN(sv), char);
349 }
aa689395 350 SvTAINTED_on(sv);
a0d0e21e
LW		 351 }
352 }
6ad3d225 353 STATUS_NATIVE_SET(PerlProc_pclose(fp));
aa689395 354 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 355 }
356 else {
f86702cc 357 STATUS_NATIVE_SET(-1);
54310121 358 if (gimme == G_SCALAR)
a0d0e21e
LW		 359 RETPUSHUNDEF;
360 }
361
362 RETURN;
363}
364
365PP(pp_glob)
366{
367 OP *result;
f5284f61
IZ		 368 tryAMAGICunTARGET(iter, -1);
369
71686f12
GS		 370 /* Note that we only ever get here if File::Glob fails to load
371 * without at the same time croaking, for some reason, or if
372 * perl was built with PERL_EXTERNAL_GLOB */
373
a0d0e21e 374 ENTER;
a0d0e21e 375
c90c0ff4 376#ifndef VMS
3280af22 377 if (PL_tainting) {
7bac28a0 378 /*
379 * The external globbing program may use things we can't control,
380 * so for security reasons we must assume the worst.
381 */
382 TAINT;
22c35a8c 383 taint_proper(PL_no_security, "glob");
7bac28a0 384 }
c90c0ff4 385#endif /* !VMS */
7bac28a0 386
3280af22
NIS		 387 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
388 PL_last_in_gv = (GV*)*PL_stack_sp--;
a0d0e21e 389
3280af22 390 SAVESPTR(PL_rs); /* This is not permanent, either. */
79cb57f6 391 PL_rs = sv_2mortal(newSVpvn("\000", 1));
c07a80fd 392#ifndef DOSISH
393#ifndef CSH
6b88bc9c 394 *SvPVX(PL_rs) = '\n';
a0d0e21e 395#endif /* !CSH */
55497cff 396#endif /* !DOSISH */
c07a80fd 397
a0d0e21e
LW		 398 result = do_readline();
399 LEAVE;
400 return result;
401}
402
a0d0e21e
LW		 403PP(pp_rcatline)
404{
146174a9 405 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 406 return do_readline();
407}
408
409PP(pp_warn)
410{
39644a26 411 dSP; dMARK;
06bf62c7 412 SV *tmpsv;
a0d0e21e 413 char *tmps;
06bf62c7 414 STRLEN len;
a0d0e21e
LW		 415 if (SP - MARK != 1) {
416 dTARGET;
3280af22 417 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 418 tmpsv = TARG;
a0d0e21e
LW		 419 SP = MARK + 1;
420 }
421 else {
06bf62c7 422 tmpsv = TOPs;
a0d0e21e 423 }
06bf62c7
GS		 424 tmps = SvPV(tmpsv, len);
425 if (!tmps || !len) {
4e6ea2c3
GS		 426 SV *error = ERRSV;
427 (void)SvUPGRADE(error, SVt_PV);
428 if (SvPOK(error) && SvCUR(error))
429 sv_catpv(error, "\t...caught");
06bf62c7
GS		 430 tmpsv = error;
431 tmps = SvPV(tmpsv, len);
a0d0e21e 432 }
06bf62c7
GS		 433 if (!tmps || !len)
434 tmpsv = sv_2mortal(newSVpvn("Warning: something's wrong", 26));
435
cb50131a 436 Perl_warn(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 437 RETSETYES;
438}
439
440PP(pp_die)
441{
39644a26 442 dSP; dMARK;
a0d0e21e 443 char *tmps;
06bf62c7
GS		 444 SV *tmpsv;
445 STRLEN len;
446 bool multiarg = 0;
96e176bf
CL		 447#ifdef VMS
448 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
449#endif
a0d0e21e
LW		 450 if (SP - MARK != 1) {
451 dTARGET;
3280af22 452 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7
GS		 453 tmpsv = TARG;
454 tmps = SvPV(tmpsv, len);
455 multiarg = 1;
a0d0e21e
LW		 456 SP = MARK + 1;
457 }
458 else {
4e6ea2c3 459 tmpsv = TOPs;
bf484eac 460 tmps = (SvROK(tmpsv) && PL_in_eval) ? Nullch : SvPV(tmpsv, len);
a0d0e21e 461 }
06bf62c7 462 if (!tmps || !len) {
4e6ea2c3
GS		 463 SV *error = ERRSV;
464 (void)SvUPGRADE(error, SVt_PV);
06bf62c7
GS		 465 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
466 if (!multiarg)
4e6ea2c3 467 SvSetSV(error,tmpsv);
06bf62c7 468 else if (sv_isobject(error)) {
05423cc9
GS		 469 HV *stash = SvSTASH(SvRV(error));
470 GV *gv = gv_fetchmethod(stash, "PROPAGATE");
471 if (gv) {
146174a9 472 SV *file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
b448e4fe 473 SV *line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
05423cc9
GS		 474 EXTEND(SP, 3);
475 PUSHMARK(SP);
476 PUSHs(error);
477 PUSHs(file);
478 PUSHs(line);
479 PUTBACK;
864dbfa3
GS		 480 call_sv((SV*)GvCV(gv),
481 G_SCALAR|G_EVAL|G_KEEPERR);
3280af22 482 sv_setsv(error,*PL_stack_sp--);
05423cc9
GS		 483 }
484 }
b3fe4827 485 DIE(aTHX_ Nullformat);
4e6ea2c3
GS		 486 }
487 else {
488 if (SvPOK(error) && SvCUR(error))
489 sv_catpv(error, "\t...propagated");
06bf62c7
GS		 490 tmpsv = error;
491 tmps = SvPV(tmpsv, len);
4e6ea2c3 492 }
a0d0e21e 493 }
06bf62c7
GS		 494 if (!tmps || !len)
495 tmpsv = sv_2mortal(newSVpvn("Died", 4));
496
cb50131a 497 DIE(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 498}
499
500/* I/O. */
501
502PP(pp_open)
503{
39644a26 504 dSP;
a567e93b
NIS		 505 dMARK; dORIGMARK;
506 dTARGET;
a0d0e21e
LW		 507 GV *gv;
508 SV *sv;
5b468f54 509 IO *io;
a0d0e21e
LW		 510 char *tmps;
511 STRLEN len;
4592e6ca 512 MAGIC *mg;
a567e93b 513 bool ok;
a0d0e21e 514
a567e93b 515 gv = (GV *)*++MARK;
5f05dabc 516 if (!isGV(gv))
cea2e8a9 517 DIE(aTHX_ PL_no_usym, "filehandle");
5b468f54 518 if ((io = GvIOp(gv)))
36477c24 519 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 520
5b468f54 521 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
a567e93b
NIS		 522 /* Method's args are same as ours ... */
523 /* ... except handle is replaced by the object */
5b468f54 524 *MARK-- = SvTIED_obj((SV*)io, mg);
a567e93b 525 PUSHMARK(MARK);
4592e6ca
NIS		 526 PUTBACK;
527 ENTER;
864dbfa3 528 call_method("OPEN", G_SCALAR);
4592e6ca
NIS		 529 LEAVE;
530 SPAGAIN;
531 RETURN;
532 }
533
a567e93b
NIS		 534 if (MARK < SP) {
535 sv = *++MARK;
536 }
537 else {
538 sv = GvSV(gv);
539 }
540
a0d0e21e 541 tmps = SvPV(sv, len);
a567e93b
NIS		 542 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp, MARK+1, (SP-MARK));
543 SP = ORIGMARK;
544 if (ok)
3280af22
NIS		 545 PUSHi( (I32)PL_forkprocess );
546 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 547 PUSHi(0);
548 else
549 RETPUSHUNDEF;
550 RETURN;
551}
552
553PP(pp_close)
554{
39644a26 555 dSP;
a0d0e21e 556 GV *gv;
5b468f54 557 IO *io;
1d603a67 558 MAGIC *mg;
a0d0e21e
LW		 559
560 if (MAXARG == 0)
3280af22 561 gv = PL_defoutgv;
a0d0e21e
LW		 562 else
563 gv = (GV*)POPs;
1d603a67 564
5b468f54
AMS		 565 if (gv && (io = GvIO(gv))
566 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
567 {
1d603a67 568 PUSHMARK(SP);
5b468f54 569 XPUSHs(SvTIED_obj((SV*)io, mg));
1d603a67
GB		 570 PUTBACK;
571 ENTER;
864dbfa3 572 call_method("CLOSE", G_SCALAR);
1d603a67
GB		 573 LEAVE;
574 SPAGAIN;
575 RETURN;
576 }
a0d0e21e 577 EXTEND(SP, 1);
54310121 578 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 579 RETURN;
580}
581
582PP(pp_pipe_op)
583{
a0d0e21e 584#ifdef HAS_PIPE
9cad6237 585 dSP;
a0d0e21e
LW		 586 GV *rgv;
587 GV *wgv;
588 register IO *rstio;
589 register IO *wstio;
590 int fd[2];
591
592 wgv = (GV*)POPs;
593 rgv = (GV*)POPs;
594
595 if (!rgv || !wgv)
596 goto badexit;
597
4633a7c4 598 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
cea2e8a9 599 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 600 rstio = GvIOn(rgv);
601 wstio = GvIOn(wgv);
602
603 if (IoIFP(rstio))
604 do_close(rgv, FALSE);
605 if (IoIFP(wstio))
606 do_close(wgv, FALSE);
607
6ad3d225 608 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 609 goto badexit;
610
760ac839
LW		 611 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
612 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
b5ac89c3 613 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 614 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 615 IoTYPE(rstio) = IoTYPE_RDONLY;
616 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 617
618 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 619 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
6ad3d225 620 else PerlLIO_close(fd[0]);
760ac839 621 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
6ad3d225 622 else PerlLIO_close(fd[1]);
a0d0e21e
LW		 623 goto badexit;
624 }
4771b018
GS		 625#if defined(HAS_FCNTL) && defined(F_SETFD)
626 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
627 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
628#endif
a0d0e21e
LW		 629 RETPUSHYES;
630
631badexit:
632 RETPUSHUNDEF;
633#else
cea2e8a9 634 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 635#endif
636}
637
638PP(pp_fileno)
639{
39644a26 640 dSP; dTARGET;
a0d0e21e
LW		 641 GV *gv;
642 IO *io;
760ac839 643 PerlIO *fp;
4592e6ca
NIS		 644 MAGIC *mg;
645
a0d0e21e
LW		 646 if (MAXARG < 1)
647 RETPUSHUNDEF;
648 gv = (GV*)POPs;
4592e6ca 649
5b468f54
AMS		 650 if (gv && (io = GvIO(gv))
651 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
652 {
4592e6ca 653 PUSHMARK(SP);
5b468f54 654 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 655 PUTBACK;
656 ENTER;
864dbfa3 657 call_method("FILENO", G_SCALAR);
4592e6ca
NIS		 658 LEAVE;
659 SPAGAIN;
660 RETURN;
661 }
662
c289d2f7
JH		 663 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
664 /* Can't do this because people seem to do things like
665 defined(fileno($foo)) to check whether $foo is a valid fh.
666 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
667 report_evil_fh(gv, io, PL_op->op_type);
668 */
a0d0e21e 669 RETPUSHUNDEF;
c289d2f7
JH		 670 }
671
760ac839 672 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 673 RETURN;
674}
675
676PP(pp_umask)
677{
39644a26 678 dSP; dTARGET;
d7e492a4 679#ifdef HAS_UMASK
761237fe 680 Mode_t anum;
a0d0e21e 681
a0d0e21e 682 if (MAXARG < 1) {
6ad3d225
GS		 683 anum = PerlLIO_umask(0);
684 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 685 }
686 else
6ad3d225 687 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 688 TAINT_PROPER("umask");
689 XPUSHi(anum);
690#else
eec2d3df
GS		 691 /* Only DIE if trying to restrict permissions on `user' (self).
692 * Otherwise it's harmless and more useful to just return undef
693 * since 'group' and 'other' concepts probably don't exist here. */
694 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 695 DIE(aTHX_ "umask not implemented");
6b88bc9c 696 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 697#endif
698 RETURN;
699}
700
701PP(pp_binmode)
702{
39644a26 703 dSP;
a0d0e21e
LW		 704 GV *gv;
705 IO *io;
760ac839 706 PerlIO *fp;
4592e6ca 707 MAGIC *mg;
16fe6d59 708 SV *discp = Nullsv;
a0d0e21e
LW		 709
710 if (MAXARG < 1)
711 RETPUSHUNDEF;
60382766 712 if (MAXARG > 1) {
16fe6d59 713 discp = POPs;
60382766 714 }
a0d0e21e 715
301e8125 716 gv = (GV*)POPs;
4592e6ca 717
5b468f54
AMS		 718 if (gv && (io = GvIO(gv))
719 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
720 {
4592e6ca 721 PUSHMARK(SP);
5b468f54 722 XPUSHs(SvTIED_obj((SV*)io, mg));
16fe6d59
GS		 723 if (discp)
724 XPUSHs(discp);
4592e6ca
NIS		 725 PUTBACK;
726 ENTER;
864dbfa3 727 call_method("BINMODE", G_SCALAR);
4592e6ca
NIS		 728 LEAVE;
729 SPAGAIN;
730 RETURN;
731 }
a0d0e21e
LW		 732
733 EXTEND(SP, 1);
50f846a7 734 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7
JH		 735 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
736 report_evil_fh(gv, io, PL_op->op_type);
50f846a7
SC		 737 RETPUSHUNDEF;
738 }
a0d0e21e 739
40d98b49 740 PUTBACK;
60382766 741 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
40d98b49
JH		 742 (discp) ? SvPV_nolen(discp) : Nullch)) {
743 SPAGAIN;
a0d0e21e 744 RETPUSHYES;
40d98b49
JH		 745 }
746 else {
747 SPAGAIN;
a0d0e21e 748 RETPUSHUNDEF;
40d98b49 749 }
a0d0e21e
LW		 750}
751
752PP(pp_tie)
753{
39644a26 754 dSP;
e336de0d 755 dMARK;
a0d0e21e
LW		 756 SV *varsv;
757 HV* stash;
758 GV *gv;
a0d0e21e 759 SV *sv;
3280af22 760 I32 markoff = MARK - PL_stack_base;
a0d0e21e 761 char *methname;
14befaf4 762 int how = PERL_MAGIC_tied;
e336de0d 763 U32 items;
2d8e6c8d 764 STRLEN n_a;
a0d0e21e 765
e336de0d 766 varsv = *++MARK;
6b05c17a
NIS		 767 switch(SvTYPE(varsv)) {
768 case SVt_PVHV:
769 methname = "TIEHASH";
03c6e78a 770 HvEITER((HV *)varsv) = Null(HE *);
6b05c17a
NIS		 771 break;
772 case SVt_PVAV:
773 methname = "TIEARRAY";
774 break;
775 case SVt_PVGV:
7fb37951
AMS		 776#ifdef GV_UNIQUE_CHECK
777 if (GvUNIQUE((GV*)varsv)) {
778 Perl_croak(aTHX_ "Attempt to tie unique GV");
5bd07a3d
DM		 779 }
780#endif
6b05c17a 781 methname = "TIEHANDLE";
14befaf4 782 how = PERL_MAGIC_tiedscalar;
5b468f54
AMS		 783 /* For tied filehandles, we apply tiedscalar magic to the IO
784 slot of the GP rather than the GV itself. AMS 20010812 */
785 if (!GvIOp(varsv))
786 GvIOp(varsv) = newIO();
787 varsv = (SV *)GvIOp(varsv);
6b05c17a
NIS		 788 break;
789 default:
790 methname = "TIESCALAR";
14befaf4 791 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 792 break;
793 }
e336de0d
GS		 794 items = SP - MARK++;
795 if (sv_isobject(*MARK)) {
6b05c17a 796 ENTER;
e788e7d3 797 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 798 PUSHMARK(SP);
eb160463 799 EXTEND(SP,(I32)items);
e336de0d
GS		 800 while (items--)
801 PUSHs(*MARK++);
802 PUTBACK;
864dbfa3 803 call_method(methname, G_SCALAR);
301e8125 804 }
6b05c17a 805 else {
864dbfa3 806 /* Not clear why we don't call call_method here too.
6b05c17a
NIS		 807 * perhaps to get different error message ?
808 */
e336de0d 809 stash = gv_stashsv(*MARK, FALSE);
6b05c17a 810 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
cea2e8a9 811 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%s\"",
301e8125 812 methname, SvPV(*MARK,n_a));
6b05c17a
NIS		 813 }
814 ENTER;
e788e7d3 815 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 816 PUSHMARK(SP);
eb160463 817 EXTEND(SP,(I32)items);
e336de0d
GS		 818 while (items--)
819 PUSHs(*MARK++);
820 PUTBACK;
864dbfa3 821 call_sv((SV*)GvCV(gv), G_SCALAR);
6b05c17a 822 }
a0d0e21e
LW		 823 SPAGAIN;
824
825 sv = TOPs;
d3acc0f7 826 POPSTACK;
a0d0e21e 827 if (sv_isobject(sv)) {
33c27489 828 sv_unmagic(varsv, how);
ae21d580 829 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 830 if (varsv == SvRV(sv) &&
d87ebaca
YST		 831 (SvTYPE(varsv) == SVt_PVAV ||
832 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 833 Perl_croak(aTHX_
834 "Self-ties of arrays and hashes are not supported");
d87ebaca 835 sv_magic(varsv, (SvRV(sv) == varsv ? Nullsv : sv), how, Nullch, 0);
a0d0e21e
LW		 836 }
837 LEAVE;
3280af22 838 SP = PL_stack_base + markoff;
a0d0e21e
LW		 839 PUSHs(sv);
840 RETURN;
841}
842
843PP(pp_untie)
844{
39644a26 845 dSP;
5b468f54 846 MAGIC *mg;
33c27489 847 SV *sv = POPs;
14befaf4
DM		 848 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
849 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 850
5b468f54
AMS		 851 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
852 RETPUSHYES;
853
854 if ((mg = SvTIED_mg(sv, how))) {
a29a5827
NIS		 855 SV *obj = SvRV(mg->mg_obj);
856 GV *gv;
857 CV *cv = NULL;
fa2b88e0
JS		 858 if (obj) {
859 if ((gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE)) &&
860 isGV(gv) && (cv = GvCV(gv))) {
861 PUSHMARK(SP);
862 XPUSHs(SvTIED_obj((SV*)gv, mg));
863 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
864 PUTBACK;
865 ENTER;
866 call_sv((SV *)cv, G_VOID);
867 LEAVE;
868 SPAGAIN;
869 }
870 else if (ckWARN(WARN_UNTIE)) {
871 if (mg && SvREFCNT(obj) > 1)
9014280d 872 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
fa2b88e0
JS		 873 "untie attempted while %"UVuf" inner references still exist",
874 (UV)SvREFCNT(obj) - 1 ) ;
875 }
cbdc8872 876 }
fa2b88e0 877 sv_unmagic(sv, how) ;
cbdc8872 878 }
55497cff 879 RETPUSHYES;
a0d0e21e
LW		 880}
881
c07a80fd 882PP(pp_tied)
883{
39644a26 884 dSP;
5b468f54 885 MAGIC *mg;
33c27489 886 SV *sv = POPs;
14befaf4
DM		 887 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
888 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54
AMS		 889
890 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
891 RETPUSHUNDEF;
c07a80fd 892
155aba94 893 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 894 SV *osv = SvTIED_obj(sv, mg);
895 if (osv == mg->mg_obj)
896 osv = sv_mortalcopy(osv);
897 PUSHs(osv);
898 RETURN;
c07a80fd 899 }
c07a80fd 900 RETPUSHUNDEF;
901}
902
a0d0e21e
LW		 903PP(pp_dbmopen)
904{
39644a26 905 dSP;
a0d0e21e
LW		 906 HV *hv;
907 dPOPPOPssrl;
908 HV* stash;
909 GV *gv;
a0d0e21e
LW		 910 SV *sv;
911
912 hv = (HV*)POPs;
913
3280af22 914 sv = sv_mortalcopy(&PL_sv_no);
a0d0e21e
LW		 915 sv_setpv(sv, "AnyDBM_File");
916 stash = gv_stashsv(sv, FALSE);
8ebc5c01 917 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 918 PUTBACK;
864dbfa3 919 require_pv("AnyDBM_File.pm");
a0d0e21e 920 SPAGAIN;
8ebc5c01 921 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 922 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 923 }
924
57d3b86d 925 ENTER;
924508f0 926 PUSHMARK(SP);
6b05c17a 927
924508f0 928 EXTEND(SP, 5);
a0d0e21e
LW		 929 PUSHs(sv);
930 PUSHs(left);
931 if (SvIV(right))
b448e4fe 932 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
a0d0e21e 933 else
b448e4fe 934 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
a0d0e21e 935 PUSHs(right);
57d3b86d 936 PUTBACK;
864dbfa3 937 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 938 SPAGAIN;
939
940 if (!sv_isobject(TOPs)) {
924508f0
GS		 941 SP--;
942 PUSHMARK(SP);
a0d0e21e
LW		 943 PUSHs(sv);
944 PUSHs(left);
b448e4fe 945 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
a0d0e21e 946 PUSHs(right);
a0d0e21e 947 PUTBACK;
864dbfa3 948 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 949 SPAGAIN;
950 }
951
6b05c17a 952 if (sv_isobject(TOPs)) {
14befaf4
DM		 953 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
954 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, Nullch, 0);
6b05c17a 955 }
a0d0e21e
LW		 956 LEAVE;
957 RETURN;
958}
959
960PP(pp_dbmclose)
961{
cea2e8a9 962 return pp_untie();
a0d0e21e
LW		 963}
964
965PP(pp_sselect)
966{
a0d0e21e 967#ifdef HAS_SELECT
9cad6237 968 dSP; dTARGET;
a0d0e21e
LW		 969 register I32 i;
970 register I32 j;
971 register char *s;
972 register SV *sv;
65202027 973 NV value;
a0d0e21e
LW		 974 I32 maxlen = 0;
975 I32 nfound;
976 struct timeval timebuf;
977 struct timeval *tbuf = &timebuf;
978 I32 growsize;
979 char *fd_sets[4];
2d8e6c8d 980 STRLEN n_a;
a0d0e21e
LW		 981#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
982 I32 masksize;
983 I32 offset;
984 I32 k;
985
986# if BYTEORDER & 0xf0000
987# define ORDERBYTE (0x88888888 - BYTEORDER)
988# else
989# define ORDERBYTE (0x4444 - BYTEORDER)
990# endif
991
992#endif
993
994 SP -= 4;
995 for (i = 1; i <= 3; i++) {
996 if (!SvPOK(SP[i]))
997 continue;
998 j = SvCUR(SP[i]);
999 if (maxlen < j)
1000 maxlen = j;
1001 }
1002
5ff3f7a4 1003/* little endians can use vecs directly */
e366b469 1004#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1005# ifdef NFDBITS
a0d0e21e 1006
5ff3f7a4
GS		 1007# ifndef NBBY
1008# define NBBY 8
1009# endif
a0d0e21e
LW		 1010
1011 masksize = NFDBITS / NBBY;
5ff3f7a4 1012# else
a0d0e21e 1013 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1014# endif
a0d0e21e
LW		 1015 Zero(&fd_sets[0], 4, char*);
1016#endif
1017
e366b469
PG		 1018# if SELECT_MIN_BITS > 1
1019 /* If SELECT_MIN_BITS is greater than one we most probably will want
1020 * to align the sizes with SELECT_MIN_BITS/8 because for example
1021 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1022 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1023 * on (sets/tests/clears bits) is 32 bits. */
1024 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1025# else
1026 growsize = sizeof(fd_set);
1027# endif
1028
a0d0e21e
LW		 1029 sv = SP[4];
1030 if (SvOK(sv)) {
1031 value = SvNV(sv);
1032 if (value < 0.0)
1033 value = 0.0;
1034 timebuf.tv_sec = (long)value;
65202027 1035 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1036 timebuf.tv_usec = (long)(value * 1000000.0);
1037 }
1038 else
1039 tbuf = Null(struct timeval*);
1040
1041 for (i = 1; i <= 3; i++) {
1042 sv = SP[i];
1043 if (!SvOK(sv)) {
1044 fd_sets[i] = 0;
1045 continue;
1046 }
1047 else if (!SvPOK(sv))
2d8e6c8d 1048 SvPV_force(sv,n_a); /* force string conversion */
a0d0e21e
LW		 1049 j = SvLEN(sv);
1050 if (j < growsize) {
1051 Sv_Grow(sv, growsize);
a0d0e21e 1052 }
c07a80fd 1053 j = SvCUR(sv);
1054 s = SvPVX(sv) + j;
1055 while (++j <= growsize) {
1056 *s++ = '\0';
1057 }
1058
a0d0e21e
LW		 1059#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1060 s = SvPVX(sv);
1061 New(403, fd_sets[i], growsize, char);
1062 for (offset = 0; offset < growsize; offset += masksize) {
1063 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1064 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1065 }
1066#else
1067 fd_sets[i] = SvPVX(sv);
1068#endif
1069 }
1070
6ad3d225 1071 nfound = PerlSock_select(
a0d0e21e
LW		 1072 maxlen * 8,
1073 (Select_fd_set_t) fd_sets[1],
1074 (Select_fd_set_t) fd_sets[2],
1075 (Select_fd_set_t) fd_sets[3],
1076 tbuf);
1077 for (i = 1; i <= 3; i++) {
1078 if (fd_sets[i]) {
1079 sv = SP[i];
1080#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1081 s = SvPVX(sv);
1082 for (offset = 0; offset < growsize; offset += masksize) {
1083 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1084 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1085 }
1086 Safefree(fd_sets[i]);
1087#endif
1088 SvSETMAGIC(sv);
1089 }
1090 }
1091
1092 PUSHi(nfound);
1093 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1094 value = (NV)(timebuf.tv_sec) +
1095 (NV)(timebuf.tv_usec) / 1000000.0;
3280af22 1096 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 1097 sv_setnv(sv, value);
1098 }
1099 RETURN;
1100#else
cea2e8a9 1101 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1102#endif
1103}
1104
4633a7c4 1105void
864dbfa3 1106Perl_setdefout(pTHX_ GV *gv)
4633a7c4
LW		 1107{
1108 if (gv)
1109 (void)SvREFCNT_inc(gv);
3280af22
NIS		 1110 if (PL_defoutgv)
1111 SvREFCNT_dec(PL_defoutgv);
1112 PL_defoutgv = gv;
4633a7c4
LW		 1113}
1114
a0d0e21e
LW		 1115PP(pp_select)
1116{
39644a26 1117 dSP; dTARGET;
4633a7c4
LW		 1118 GV *newdefout, *egv;
1119 HV *hv;
1120
533c011a 1121 newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
4633a7c4 1122
3280af22 1123 egv = GvEGV(PL_defoutgv);
4633a7c4 1124 if (!egv)
3280af22 1125 egv = PL_defoutgv;
4633a7c4
LW		 1126 hv = GvSTASH(egv);
1127 if (! hv)
3280af22 1128 XPUSHs(&PL_sv_undef);
4633a7c4 1129 else {
cbdc8872 1130 GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1131 if (gvp && *gvp == egv) {
f7aaccc2 1132 gv_efullname4(TARG, PL_defoutgv, Nullch, TRUE);
f86702cc 1133 XPUSHTARG;
1134 }
1135 else {
1136 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1137 }
4633a7c4
LW		 1138 }
1139
1140 if (newdefout) {
ded8aa31
GS		 1141 if (!GvIO(newdefout))
1142 gv_IOadd(newdefout);
4633a7c4
LW		 1143 setdefout(newdefout);
1144 }
1145
a0d0e21e
LW		 1146 RETURN;
1147}
1148
1149PP(pp_getc)
1150{
39644a26 1151 dSP; dTARGET;
a0d0e21e 1152 GV *gv;
90133b69 1153 IO *io = NULL;
2ae324a7 1154 MAGIC *mg;
a0d0e21e 1155
32da55ab 1156 if (MAXARG == 0)
3280af22 1157 gv = PL_stdingv;
a0d0e21e
LW		 1158 else
1159 gv = (GV*)POPs;
2ae324a7 1160
5b468f54
AMS		 1161 if (gv && (io = GvIO(gv))
1162 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1163 {
54310121 1164 I32 gimme = GIMME_V;
2ae324a7 1165 PUSHMARK(SP);
5b468f54 1166 XPUSHs(SvTIED_obj((SV*)io, mg));
2ae324a7 1167 PUTBACK;
1168 ENTER;
864dbfa3 1169 call_method("GETC", gimme);
2ae324a7 1170 LEAVE;
1171 SPAGAIN;
54310121 1172 if (gimme == G_SCALAR)
1173 SvSetMagicSV_nosteal(TARG, TOPs);
2ae324a7 1174 RETURN;
1175 }
90133b69 1176 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
97e322ff
RGS		 1177 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)
1178 && (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY)))
90133b69 1179 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1180 RETPUSHUNDEF;
90133b69 1181 }
bbce6d69 1182 TAINT;
a0d0e21e 1183 sv_setpv(TARG, " ");
9bc64814 1184 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1185 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1186 /* Find out how many bytes the char needs */
1187 Size_t len = UTF8SKIP(SvPVX(TARG));
1188 if (len > 1) {
1189 SvGROW(TARG,len+1);
1190 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1191 SvCUR_set(TARG,1+len);
1192 }
1193 SvUTF8_on(TARG);
1194 }
a0d0e21e
LW		 1195 PUSHTARG;
1196 RETURN;
1197}
1198
1199PP(pp_read)
1200{
cea2e8a9 1201 return pp_sysread();
a0d0e21e
LW		 1202}
1203
76e3520e 1204STATIC OP *
cea2e8a9 1205S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1206{
c09156bb 1207 register PERL_CONTEXT *cx;
54310121 1208 I32 gimme = GIMME_V;
a0d0e21e
LW		 1209 AV* padlist = CvPADLIST(cv);
1210 SV** svp = AvARRAY(padlist);
1211
1212 ENTER;
1213 SAVETMPS;
1214
1215 push_return(retop);
146174a9 1216 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
a0d0e21e 1217 PUSHFORMAT(cx);
146174a9 1218 SAVEVPTR(PL_curpad);
3280af22 1219 PL_curpad = AvARRAY((AV*)svp[1]);
a0d0e21e 1220
4633a7c4 1221 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1222 return CvSTART(cv);
1223}
1224
1225PP(pp_enterwrite)
1226{
39644a26 1227 dSP;
a0d0e21e
LW		 1228 register GV *gv;
1229 register IO *io;
1230 GV *fgv;
1231 CV *cv;
1232
1233 if (MAXARG == 0)
3280af22 1234 gv = PL_defoutgv;
a0d0e21e
LW		 1235 else {
1236 gv = (GV*)POPs;
1237 if (!gv)
3280af22 1238 gv = PL_defoutgv;
a0d0e21e
LW		 1239 }
1240 EXTEND(SP, 1);
1241 io = GvIO(gv);
1242 if (!io) {
1243 RETPUSHNO;
1244 }
1245 if (IoFMT_GV(io))
1246 fgv = IoFMT_GV(io);
1247 else
1248 fgv = gv;
1249
1250 cv = GvFORM(fgv);
a0d0e21e 1251 if (!cv) {
2dd78f96 1252 char *name = NULL;
a0d0e21e 1253 if (fgv) {
748a9306 1254 SV *tmpsv = sv_newmortal();
43693395 1255 gv_efullname4(tmpsv, fgv, Nullch, FALSE);
2dd78f96 1256 name = SvPV_nolen(tmpsv);
a0d0e21e 1257 }
2dd78f96
JH		 1258 if (name && *name)
1259 DIE(aTHX_ "Undefined format \"%s\" called", name);
cea2e8a9 1260 DIE(aTHX_ "Not a format reference");
a0d0e21e 1261 }
44a8e56a 1262 if (CvCLONE(cv))
1263 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1264
44a8e56a 1265 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1266 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1267}
1268
1269PP(pp_leavewrite)
1270{
39644a26 1271 dSP;
a0d0e21e
LW		 1272 GV *gv = cxstack[cxstack_ix].blk_sub.gv;
1273 register IO *io = GvIOp(gv);
760ac839
LW		 1274 PerlIO *ofp = IoOFP(io);
1275 PerlIO *fp;
a0d0e21e
LW		 1276 SV **newsp;
1277 I32 gimme;
c09156bb 1278 register PERL_CONTEXT *cx;
a0d0e21e 1279
760ac839 1280 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1281 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
7ef822cd
JH		 1282 if (!io || !ofp)
1283 goto forget_top;
3280af22
NIS		 1284 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1285 PL_formtarget != PL_toptarget)
a0d0e21e 1286 {
4633a7c4
LW		 1287 GV *fgv;
1288 CV *cv;
a0d0e21e
LW		 1289 if (!IoTOP_GV(io)) {
1290 GV *topgv;
46fc3d4c 1291 SV *topname;
a0d0e21e
LW		 1292
1293 if (!IoTOP_NAME(io)) {
1294 if (!IoFMT_NAME(io))
1295 IoFMT_NAME(io) = savepv(GvNAME(gv));
cea2e8a9 1296 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", IoFMT_NAME(io)));
46fc3d4c 1297 topgv = gv_fetchpv(SvPVX(topname), FALSE, SVt_PVFM);
748a9306 1298 if ((topgv && GvFORM(topgv)) ||
a0d0e21e 1299 !gv_fetchpv("top",FALSE,SVt_PVFM))
46fc3d4c 1300 IoTOP_NAME(io) = savepv(SvPVX(topname));
a0d0e21e
LW		 1301 else
1302 IoTOP_NAME(io) = savepv("top");
1303 }
1304 topgv = gv_fetchpv(IoTOP_NAME(io),FALSE, SVt_PVFM);
1305 if (!topgv || !GvFORM(topgv)) {
1306 IoLINES_LEFT(io) = 100000000;
1307 goto forget_top;
1308 }
1309 IoTOP_GV(io) = topgv;
1310 }
748a9306
LW		 1311 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1312 I32 lines = IoLINES_LEFT(io);
3280af22 1313 char *s = SvPVX(PL_formtarget);
8e07c86e
AD		 1314 if (lines <= 0) /* Yow, header didn't even fit!!! */
1315 goto forget_top;
748a9306
LW		 1316 while (lines-- > 0) {
1317 s = strchr(s, '\n');
1318 if (!s)
1319 break;
1320 s++;
1321 }
1322 if (s) {
d75029d0
NIS		 1323 STRLEN save = SvCUR(PL_formtarget);
1324 SvCUR_set(PL_formtarget, s - SvPVX(PL_formtarget));
1325 do_print(PL_formtarget, ofp);
1326 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1327 sv_chop(PL_formtarget, s);
1328 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1329 }
1330 }
a0d0e21e 1331 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1332 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1333 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1334 IoPAGE(io)++;
3280af22 1335 PL_formtarget = PL_toptarget;
748a9306 1336 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1337 fgv = IoTOP_GV(io);
1338 if (!fgv)
cea2e8a9 1339 DIE(aTHX_ "bad top format reference");
4633a7c4 1340 cv = GvFORM(fgv);
2dd78f96
JH		 1341 {
1342 char *name = NULL;
1343 if (!cv) {
1344 SV *sv = sv_newmortal();
1345 gv_efullname4(sv, fgv, Nullch, FALSE);
1346 name = SvPV_nolen(sv);
1347 }
1348 if (name && *name)
1349 DIE(aTHX_ "Undefined top format \"%s\" called",name);
1350 /* why no:
1351 else
1352 DIE(aTHX_ "Undefined top format called");
1353 ?*/
4633a7c4 1354 }
44a8e56a 1355 if (CvCLONE(cv))
1356 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
533c011a 1357 return doform(cv,gv,PL_op);
a0d0e21e
LW		 1358 }
1359
1360 forget_top:
3280af22 1361 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1362 POPFORMAT(cx);
1363 LEAVE;
1364
1365 fp = IoOFP(io);
1366 if (!fp) {
599cee73 1367 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
cb50131a 1368 if (IoIFP(io)) {
2dd78f96
JH		 1369 /* integrate with report_evil_fh()? */
1370 char *name = NULL;
1371 if (isGV(gv)) {
1372 SV* sv = sv_newmortal();
1373 gv_efullname4(sv, gv, Nullch, FALSE);
1374 name = SvPV_nolen(sv);
1375 }
1376 if (name && *name)
9014280d 1377 Perl_warner(aTHX_ packWARN(WARN_IO),
2dd78f96
JH		 1378 "Filehandle %s opened only for input", name);
1379 else
9014280d 1380 Perl_warner(aTHX_ packWARN(WARN_IO),
2dd78f96 1381 "Filehandle opened only for input");
cb50131a 1382 }
599cee73 1383 else if (ckWARN(WARN_CLOSED))
bc37a18f 1384 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1385 }
3280af22 1386 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1387 }
1388 else {
3280af22 1389 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1390 if (ckWARN(WARN_IO))
9014280d 1391 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1392 }
d75029d0 1393 if (!do_print(PL_formtarget, fp))
3280af22 1394 PUSHs(&PL_sv_no);
a0d0e21e 1395 else {
3280af22
NIS		 1396 FmLINES(PL_formtarget) = 0;
1397 SvCUR_set(PL_formtarget, 0);
1398 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1399 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1400 (void)PerlIO_flush(fp);
3280af22 1401 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1402 }
1403 }
9cbac4c7 1404 /* bad_ofp: */
3280af22 1405 PL_formtarget = PL_bodytarget;
a0d0e21e
LW		 1406 PUTBACK;
1407 return pop_return();
1408}
1409
1410PP(pp_prtf)
1411{
39644a26 1412 dSP; dMARK; dORIGMARK;
a0d0e21e
LW		 1413 GV *gv;
1414 IO *io;
760ac839 1415 PerlIO *fp;
26db47c4 1416 SV *sv;
46fc3d4c 1417 MAGIC *mg;
a0d0e21e 1418
533c011a 1419 if (PL_op->op_flags & OPf_STACKED)
a0d0e21e
LW		 1420 gv = (GV*)*++MARK;
1421 else
3280af22 1422 gv = PL_defoutgv;
46fc3d4c 1423
5b468f54
AMS		 1424 if (gv && (io = GvIO(gv))
1425 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1426 {
46fc3d4c 1427 if (MARK == ORIGMARK) {
4352c267 1428 MEXTEND(SP, 1);
46fc3d4c 1429 ++MARK;
1430 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1431 ++SP;
1432 }
1433 PUSHMARK(MARK - 1);
5b468f54 1434 *MARK = SvTIED_obj((SV*)io, mg);
46fc3d4c 1435 PUTBACK;
1436 ENTER;
864dbfa3 1437 call_method("PRINTF", G_SCALAR);
46fc3d4c 1438 LEAVE;
1439 SPAGAIN;
1440 MARK = ORIGMARK + 1;
1441 *MARK = *SP;
1442 SP = MARK;
1443 RETURN;
1444 }
1445
26db47c4 1446 sv = NEWSV(0,0);
a0d0e21e 1447 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1448 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1449 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 1450 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 1451 goto just_say_no;
1452 }
1453 else if (!(fp = IoOFP(io))) {
599cee73 1454 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
2dd78f96 1455 /* integrate with report_evil_fh()? */
cb50131a 1456 if (IoIFP(io)) {
2dd78f96
JH		 1457 char *name = NULL;
1458 if (isGV(gv)) {
1459 gv_efullname4(sv, gv, Nullch, FALSE);
1460 name = SvPV_nolen(sv);
1461 }
1462 if (name && *name)
9014280d 1463 Perl_warner(aTHX_ packWARN(WARN_IO),
2dd78f96
JH		 1464 "Filehandle %s opened only for input", name);
1465 else
9014280d 1466 Perl_warner(aTHX_ packWARN(WARN_IO),
2dd78f96 1467 "Filehandle opened only for input");
cb50131a 1468 }
599cee73 1469 else if (ckWARN(WARN_CLOSED))
bc37a18f 1470 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1471 }
91487cfc 1472 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
a0d0e21e
LW		 1473 goto just_say_no;
1474 }
1475 else {
1476 do_sprintf(sv, SP - MARK, MARK + 1);
1477 if (!do_print(sv, fp))
1478 goto just_say_no;
1479
1480 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1481 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1482 goto just_say_no;
1483 }
1484 SvREFCNT_dec(sv);
1485 SP = ORIGMARK;
3280af22 1486 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1487 RETURN;
1488
1489 just_say_no:
1490 SvREFCNT_dec(sv);
1491 SP = ORIGMARK;
3280af22 1492 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1493 RETURN;
1494}
1495
c07a80fd 1496PP(pp_sysopen)
1497{
39644a26 1498 dSP;
c07a80fd 1499 GV *gv;
c07a80fd 1500 SV *sv;
1501 char *tmps;
1502 STRLEN len;
1503 int mode, perm;
1504
1505 if (MAXARG > 3)
1506 perm = POPi;
1507 else
1508 perm = 0666;
1509 mode = POPi;
1510 sv = POPs;
1511 gv = (GV *)POPs;
1512
4592e6ca
NIS		 1513 /* Need TIEHANDLE method ? */
1514
c07a80fd 1515 tmps = SvPV(sv, len);
1516 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1517 IoLINES(GvIOp(gv)) = 0;
3280af22 1518 PUSHs(&PL_sv_yes);
c07a80fd 1519 }
1520 else {
3280af22 1521 PUSHs(&PL_sv_undef);
c07a80fd 1522 }
1523 RETURN;
1524}
1525
a0d0e21e
LW		 1526PP(pp_sysread)
1527{
39644a26 1528 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1529 int offset;
1530 GV *gv;
1531 IO *io;
1532 char *buffer;
5b54f415 1533 SSize_t length;
eb5c063a 1534 SSize_t count;
1e422769 1535 Sock_size_t bufsize;
748a9306 1536 SV *bufsv;
a0d0e21e 1537 STRLEN blen;
2ae324a7 1538 MAGIC *mg;
eb5c063a
NIS		 1539 int fp_utf8;
1540 Size_t got = 0;
1541 Size_t wanted;
1d636c13 1542 bool charstart = FALSE;
87330c3c
JH		 1543 STRLEN charskip = 0;
1544 STRLEN skip = 0;
a0d0e21e
LW		 1545
1546 gv = (GV*)*++MARK;
5b468f54
AMS		 1547 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1548 && gv && (io = GvIO(gv))
1549 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
137443ea 1550 {
2ae324a7 1551 SV *sv;
1552
1553 PUSHMARK(MARK-1);
5b468f54 1554 *MARK = SvTIED_obj((SV*)io, mg);
2ae324a7 1555 ENTER;
864dbfa3 1556 call_method("READ", G_SCALAR);
2ae324a7 1557 LEAVE;
1558 SPAGAIN;
1559 sv = POPs;
1560 SP = ORIGMARK;
1561 PUSHs(sv);
1562 RETURN;
1563 }
1564
a0d0e21e
LW		 1565 if (!gv)
1566 goto say_undef;
748a9306 1567 bufsv = *++MARK;
ff68c719 1568 if (! SvOK(bufsv))
1569 sv_setpvn(bufsv, "", 0);
a0d0e21e 1570 length = SvIVx(*++MARK);
748a9306 1571 SETERRNO(0,0);
a0d0e21e
LW		 1572 if (MARK < SP)
1573 offset = SvIVx(*++MARK);
1574 else
1575 offset = 0;
1576 io = GvIO(gv);
1577 if (!io || !IoIFP(io))
1578 goto say_undef;
0064a8a9 1579 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1580 buffer = SvPVutf8_force(bufsv, blen);
eb5c063a
NIS		 1581 /* UTF8 may not have been set if they are all low bytes */
1582 SvUTF8_on(bufsv);
7d59b7e4
NIS		 1583 }
1584 else {
1585 buffer = SvPV_force(bufsv, blen);
1586 }
1587 if (length < 0)
1588 DIE(aTHX_ "Negative length");
eb5c063a 1589 wanted = length;
7d59b7e4 1590
d0965105
JH		 1591 charstart = TRUE;
1592 charskip = 0;
87330c3c 1593 skip = 0;
d0965105 1594
a0d0e21e 1595#ifdef HAS_SOCKET
533c011a 1596 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1597 char namebuf[MAXPATHLEN];
17a8c7ba 1598#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
490ab354
JH		 1599 bufsize = sizeof (struct sockaddr_in);
1600#else
46fc3d4c 1601 bufsize = sizeof namebuf;
490ab354 1602#endif
abf95952
IZ		 1603#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1604 if (bufsize >= 256)
1605 bufsize = 255;
1606#endif
eb160463 1607 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1608 /* 'offset' means 'flags' here */
eb5c063a 1609 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
46fc3d4c 1610 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1611 if (count < 0)
a0d0e21e 1612 RETPUSHUNDEF;
4107cc59
OF		 1613#ifdef EPOC
1614 /* Bogus return without padding */
1615 bufsize = sizeof (struct sockaddr_in);
1616#endif
eb5c063a 1617 SvCUR_set(bufsv, count);
748a9306
LW		 1618 *SvEND(bufsv) = '\0';
1619 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1620 if (fp_utf8)
1621 SvUTF8_on(bufsv);
748a9306 1622 SvSETMAGIC(bufsv);
aac0dd9a 1623 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1624 if (!(IoFLAGS(io) & IOf_UNTAINT))
1625 SvTAINTED_on(bufsv);
a0d0e21e 1626 SP = ORIGMARK;
46fc3d4c 1627 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1628 PUSHs(TARG);
1629 RETURN;
1630 }
1631#else
911d147d 1632 if (PL_op->op_type == OP_RECV)
cea2e8a9 1633 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1634#endif
eb5c063a
NIS		 1635 if (DO_UTF8(bufsv)) {
1636 /* offset adjust in characters not bytes */
1637 blen = sv_len_utf8(bufsv);
7d59b7e4 1638 }
bbce6d69 1639 if (offset < 0) {
eb160463 1640 if (-offset > (int)blen)
cea2e8a9 1641 DIE(aTHX_ "Offset outside string");
bbce6d69 1642 offset += blen;
1643 }
eb5c063a
NIS		 1644 if (DO_UTF8(bufsv)) {
1645 /* convert offset-as-chars to offset-as-bytes */
1646 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1647 }
1648 more_bytes:
cd52b7b2 1649 bufsize = SvCUR(bufsv);
eb160463 1650 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
cd52b7b2 1651 if (offset > bufsize) { /* Zero any newly allocated space */
1652 Zero(buffer+bufsize, offset-bufsize, char);
1653 }
eb5c063a
NIS		 1654 buffer = buffer + offset;
1655
533c011a 1656 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1657#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1658 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1659 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1660 buffer, length, 0);
a7092146
GS		 1661 }
1662 else
1663#endif
1664 {
eb5c063a
NIS		 1665 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1666 buffer, length);
a7092146 1667 }
a0d0e21e
LW		 1668 }
1669 else
1670#ifdef HAS_SOCKET__bad_code_maybe
50952442 1671 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1672 char namebuf[MAXPATHLEN];
490ab354
JH		 1673#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1674 bufsize = sizeof (struct sockaddr_in);
1675#else
46fc3d4c 1676 bufsize = sizeof namebuf;
490ab354 1677#endif
eb5c063a 1678 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1679 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1680 }
1681 else
1682#endif
3b02c43c 1683 {
eb5c063a
NIS		 1684 count = PerlIO_read(IoIFP(io), buffer, length);
1685 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1686 if (count == 0 && PerlIO_error(IoIFP(io)))
1687 count = -1;
3b02c43c 1688 }
eb5c063a 1689 if (count < 0) {
a00b5bd3 1690 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
af8c498a 1691 {
2dd78f96
JH		 1692 /* integrate with report_evil_fh()? */
1693 char *name = NULL;
1694 if (isGV(gv)) {
1695 SV* sv = sv_newmortal();
1696 gv_efullname4(sv, gv, Nullch, FALSE);
1697 name = SvPV_nolen(sv);
1698 }
1699 if (name && *name)
9014280d 1700 Perl_warner(aTHX_ packWARN(WARN_IO),
2dd78f96
JH		 1701 "Filehandle %s opened only for output", name);
1702 else
9014280d 1703 Perl_warner(aTHX_ packWARN(WARN_IO),
2dd78f96 1704 "Filehandle opened only for output");
af8c498a 1705 }
a0d0e21e 1706 goto say_undef;
af8c498a 1707 }
eb5c063a 1708 SvCUR_set(bufsv, count+(buffer - SvPVX(bufsv)));
748a9306
LW		 1709 *SvEND(bufsv) = '\0';
1710 (void)SvPOK_only(bufsv);
0064a8a9 1711 if (fp_utf8 && !IN_BYTES) {
eb5c063a
NIS		 1712 /* Look at utf8 we got back and count the characters */
1713 char *bend = buffer + count;
1714 while (buffer < bend) {
d0965105
JH		 1715 if (charstart) {
1716 skip = UTF8SKIP(buffer);
1717 charskip = 0;
1718 }
1719 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1720 /* partial character - try for rest of it */
1721 length = skip - (bend-buffer);
1722 offset = bend - SvPVX(bufsv);
d0965105
JH		 1723 charstart = FALSE;
1724 charskip += count;
eb5c063a
NIS		 1725 goto more_bytes;
1726 }
1727 else {
1728 got++;
1729 buffer += skip;
d0965105
JH		 1730 charstart = TRUE;
1731 charskip = 0;
eb5c063a
NIS		 1732 }
1733 }
1734 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1735 provided amount read (count) was what was requested (length)
1736 */
1737 if (got < wanted && count == length) {
d0965105 1738 length = wanted - got;
eb5c063a
NIS		 1739 offset = bend - SvPVX(bufsv);
1740 goto more_bytes;
1741 }
1742 /* return value is character count */
1743 count = got;
1744 SvUTF8_on(bufsv);
1745 }
748a9306 1746 SvSETMAGIC(bufsv);
aac0dd9a 1747 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1748 if (!(IoFLAGS(io) & IOf_UNTAINT))
1749 SvTAINTED_on(bufsv);
a0d0e21e 1750 SP = ORIGMARK;
eb5c063a 1751 PUSHi(count);
a0d0e21e
LW		 1752 RETURN;
1753
1754 say_undef:
1755 SP = ORIGMARK;
1756 RETPUSHUNDEF;
1757}
1758
1759PP(pp_syswrite)
1760{
39644a26 1761 dSP;
092bebab
JH		 1762 int items = (SP - PL_stack_base) - TOPMARK;
1763 if (items == 2) {
9f089d78 1764 SV *sv;
092bebab 1765 EXTEND(SP, 1);
9f089d78
SB		 1766 sv = sv_2mortal(newSViv(sv_len(*SP)));
1767 PUSHs(sv);
092bebab
JH		 1768 PUTBACK;
1769 }
cea2e8a9 1770 return pp_send();
a0d0e21e
LW		 1771}
1772
1773PP(pp_send)
1774{
39644a26 1775 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1776 GV *gv;
1777 IO *io;
748a9306 1778 SV *bufsv;
a0d0e21e 1779 char *buffer;
8c99d73e
GS		 1780 Size_t length;
1781 SSize_t retval;
a0d0e21e 1782 STRLEN blen;
1d603a67 1783 MAGIC *mg;
a0d0e21e
LW		 1784
1785 gv = (GV*)*++MARK;
14befaf4 1786 if (PL_op->op_type == OP_SYSWRITE
5b468f54
AMS		 1787 && gv && (io = GvIO(gv))
1788 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
14befaf4 1789 {
1d603a67
GB		 1790 SV *sv;
1791
1792 PUSHMARK(MARK-1);
5b468f54 1793 *MARK = SvTIED_obj((SV*)io, mg);
1d603a67 1794 ENTER;
864dbfa3 1795 call_method("WRITE", G_SCALAR);
1d603a67
GB		 1796 LEAVE;
1797 SPAGAIN;
1798 sv = POPs;
1799 SP = ORIGMARK;
1800 PUSHs(sv);
1801 RETURN;
1802 }
a0d0e21e
LW		 1803 if (!gv)
1804 goto say_undef;
748a9306 1805 bufsv = *++MARK;
8c99d73e 1806#if Size_t_size > IVSIZE
3c001241 1807 length = (Size_t)SvNVx(*++MARK);
146174a9 1808#else
3c001241 1809 length = (Size_t)SvIVx(*++MARK);
146174a9 1810#endif
3c001241 1811 if ((SSize_t)length < 0)
cea2e8a9 1812 DIE(aTHX_ "Negative length");
748a9306 1813 SETERRNO(0,0);
a0d0e21e
LW		 1814 io = GvIO(gv);
1815 if (!io || !IoIFP(io)) {
8c99d73e 1816 retval = -1;
bc37a18f
RG		 1817 if (ckWARN(WARN_CLOSED))
1818 report_evil_fh(gv, io, PL_op->op_type);
7d59b7e4
NIS		 1819 goto say_undef;
1820 }
1821
1822 if (PerlIO_isutf8(IoIFP(io))) {
1823 buffer = SvPVutf8(bufsv, blen);
a0d0e21e 1824 }
7d59b7e4
NIS		 1825 else {
1826 if (DO_UTF8(bufsv))
1827 sv_utf8_downgrade(bufsv, FALSE);
1828 buffer = SvPV(bufsv, blen);
1829 }
1830
1831 if (PL_op->op_type == OP_SYSWRITE) {
1832 IV offset;
1833 if (DO_UTF8(bufsv)) {
1834 /* length and offset are in chars */
1835 blen = sv_len_utf8(bufsv);
1836 }
bbce6d69 1837 if (MARK < SP) {
a0d0e21e 1838 offset = SvIVx(*++MARK);
bbce6d69 1839 if (offset < 0) {
eb160463 1840 if (-offset > (IV)blen)
cea2e8a9 1841 DIE(aTHX_ "Offset outside string");
bbce6d69 1842 offset += blen;
eb160463 1843 } else if (offset >= (IV)blen && blen > 0)
cea2e8a9 1844 DIE(aTHX_ "Offset outside string");
bbce6d69 1845 } else
a0d0e21e
LW		 1846 offset = 0;
1847 if (length > blen - offset)
1848 length = blen - offset;
7d59b7e4 1849 if (DO_UTF8(bufsv)) {
c8d31a35 1850 buffer = (char*)utf8_hop((U8 *)buffer, offset);
7d59b7e4
NIS		 1851 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1852 }
1853 else {
1854 buffer = buffer+offset;
1855 }
a7092146 1856#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1857 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1858 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1859 buffer, length, 0);
a7092146
GS		 1860 }
1861 else
1862#endif
1863 {
94e4c244 1864 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1865 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1866 buffer, length);
a7092146 1867 }
a0d0e21e
LW		 1868 }
1869#ifdef HAS_SOCKET
1870 else if (SP > MARK) {
1871 char *sockbuf;
1872 STRLEN mlen;
1873 sockbuf = SvPVx(*++MARK, mlen);
7d59b7e4 1874 /* length is really flags */
8c99d73e
GS		 1875 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1876 length, (struct sockaddr *)sockbuf, mlen);
a0d0e21e
LW		 1877 }
1878 else
7d59b7e4 1879 /* length is really flags */
8c99d73e 1880 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
a0d0e21e
LW		 1881#else
1882 else
cea2e8a9 1883 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1884#endif
8c99d73e 1885 if (retval < 0)
a0d0e21e
LW		 1886 goto say_undef;
1887 SP = ORIGMARK;
f36eea10
JH		 1888 if (DO_UTF8(bufsv))
1889 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
8c99d73e
GS		 1890#if Size_t_size > IVSIZE
1891 PUSHn(retval);
1892#else
1893 PUSHi(retval);
1894#endif
a0d0e21e
LW		 1895 RETURN;
1896
1897 say_undef:
1898 SP = ORIGMARK;
1899 RETPUSHUNDEF;
1900}
1901
1902PP(pp_recv)
1903{
cea2e8a9 1904 return pp_sysread();
a0d0e21e
LW		 1905}
1906
1907PP(pp_eof)
1908{
39644a26 1909 dSP;
a0d0e21e 1910 GV *gv;
5b468f54 1911 IO *io;
4592e6ca 1912 MAGIC *mg;
a0d0e21e 1913
32da55ab 1914 if (MAXARG == 0) {
146174a9
CB		 1915 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1916 IO *io;
ed2c6b9b 1917 gv = PL_last_in_gv = GvEGV(PL_argvgv);
146174a9
CB		 1918 io = GvIO(gv);
1919 if (io && !IoIFP(io)) {
1920 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1921 IoLINES(io) = 0;
1922 IoFLAGS(io) &= ~IOf_START;
1923 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
1924 sv_setpvn(GvSV(gv), "-", 1);
1925 SvSETMAGIC(GvSV(gv));
1926 }
1927 else if (!nextargv(gv))
1928 RETPUSHYES;
1929 }
1930 }
1931 else
1932 gv = PL_last_in_gv; /* eof */
1933 }
a0d0e21e 1934 else
146174a9 1935 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 1936
5b468f54
AMS		 1937 if (gv && (io = GvIO(gv))
1938 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1939 {
4592e6ca 1940 PUSHMARK(SP);
5b468f54 1941 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1942 PUTBACK;
1943 ENTER;
864dbfa3 1944 call_method("EOF", G_SCALAR);
4592e6ca
NIS		 1945 LEAVE;
1946 SPAGAIN;
1947 RETURN;
1948 }
1949
54310121 1950 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 1951 RETURN;
1952}
1953
1954PP(pp_tell)
1955{
39644a26 1956 dSP; dTARGET;
301e8125 1957 GV *gv;
5b468f54 1958 IO *io;
4592e6ca 1959 MAGIC *mg;
a0d0e21e 1960
32da55ab 1961 if (MAXARG == 0)
3280af22 1962 gv = PL_last_in_gv;
a0d0e21e 1963 else
3280af22 1964 gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 1965
5b468f54
AMS		 1966 if (gv && (io = GvIO(gv))
1967 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1968 {
4592e6ca 1969 PUSHMARK(SP);
5b468f54 1970 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1971 PUTBACK;
1972 ENTER;
864dbfa3 1973 call_method("TELL", G_SCALAR);
4592e6ca
NIS		 1974 LEAVE;
1975 SPAGAIN;
1976 RETURN;
1977 }
1978
146174a9
CB		 1979#if LSEEKSIZE > IVSIZE
1980 PUSHn( do_tell(gv) );
1981#else
a0d0e21e 1982 PUSHi( do_tell(gv) );
146174a9 1983#endif
a0d0e21e
LW		 1984 RETURN;
1985}
1986
1987PP(pp_seek)
1988{
cea2e8a9 1989 return pp_sysseek();
137443ea 1990}
1991
1992PP(pp_sysseek)
1993{
39644a26 1994 dSP;
a0d0e21e 1995 GV *gv;
5b468f54 1996 IO *io;
a0d0e21e 1997 int whence = POPi;
146174a9
CB		 1998#if LSEEKSIZE > IVSIZE
1999 Off_t offset = (Off_t)SvNVx(POPs);
2000#else
d9b3e12d 2001 Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2002#endif
4592e6ca 2003 MAGIC *mg;
a0d0e21e 2004
3280af22 2005 gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 2006
5b468f54
AMS		 2007 if (gv && (io = GvIO(gv))
2008 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
2009 {
4592e6ca 2010 PUSHMARK(SP);
5b468f54 2011 XPUSHs(SvTIED_obj((SV*)io, mg));
cb50131a
CB		 2012#if LSEEKSIZE > IVSIZE
2013 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
2014#else
b448e4fe 2015 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 2016#endif
b448e4fe 2017 XPUSHs(sv_2mortal(newSViv(whence)));
4592e6ca
NIS		 2018 PUTBACK;
2019 ENTER;
864dbfa3 2020 call_method("SEEK", G_SCALAR);
4592e6ca
NIS		 2021 LEAVE;
2022 SPAGAIN;
2023 RETURN;
2024 }
2025
533c011a 2026 if (PL_op->op_type == OP_SEEK)
8903cb82 2027 PUSHs(boolSV(do_seek(gv, offset, whence)));
2028 else {
b448e4fe
JH		 2029 Off_t sought = do_sysseek(gv, offset, whence);
2030 if (sought < 0)
146174a9
CB		 2031 PUSHs(&PL_sv_undef);
2032 else {
b448e4fe 2033 SV* sv = sought ?
146174a9 2034#if LSEEKSIZE > IVSIZE
b448e4fe 2035 newSVnv((NV)sought)
146174a9 2036#else
b448e4fe 2037 newSViv(sought)
146174a9
CB		 2038#endif
2039 : newSVpvn(zero_but_true, ZBTLEN);
2040 PUSHs(sv_2mortal(sv));
2041 }
8903cb82 2042 }
a0d0e21e
LW		 2043 RETURN;
2044}
2045
2046PP(pp_truncate)
2047{
39644a26 2048 dSP;
8c99d73e
GS		 2049 /* There seems to be no consensus on the length type of truncate()
2050 * and ftruncate(), both off_t and size_t have supporters. In
2051 * general one would think that when using large files, off_t is
2052 * at least as wide as size_t, so using an off_t should be okay. */
2053 /* XXX Configure probe for the length type of *truncate() needed XXX */
2054 Off_t len;
a0d0e21e 2055
25342a55 2056#if Off_t_size > IVSIZE
8c99d73e
GS		 2057 len = (Off_t)POPn;
2058#else
2059 len = (Off_t)POPi;
2060#endif
2061 /* Checking for length < 0 is problematic as the type might or
301e8125 2062 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2063 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2064 SETERRNO(0,0);
5d94fbed 2065#if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) || defined(F_FREESP)
d05c1ba0
JH		 2066 {
2067 STRLEN n_a;
2068 int result = 1;
2069 GV *tmpgv;
2070
2071 if (PL_op->op_flags & OPf_SPECIAL) {
2072 tmpgv = gv_fetchpv(POPpx, FALSE, SVt_PVIO);
2073
2074 do_ftruncate:
2075 TAINT_PROPER("truncate");
2076 if (!GvIO(tmpgv) || !IoIFP(GvIOp(tmpgv)))
2077 result = 0;
2078 else {
2079 PerlIO_flush(IoIFP(GvIOp(tmpgv)));
cbdc8872 2080#ifdef HAS_TRUNCATE
d05c1ba0 2081 if (ftruncate(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
301e8125 2082#else
d05c1ba0 2083 if (my_chsize(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
cbdc8872 2084#endif
d05c1ba0
JH		 2085 result = 0;
2086 }
cbdc8872 2087 }
d05c1ba0
JH		 2088 else {
2089 SV *sv = POPs;
2090 char *name;
72f496dc 2091
d05c1ba0
JH		 2092 if (SvTYPE(sv) == SVt_PVGV) {
2093 tmpgv = (GV*)sv; /* *main::FRED for example */
2094 goto do_ftruncate;
2095 }
2096 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2097 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2098 goto do_ftruncate;
2099 }
1e422769 2100
d05c1ba0
JH		 2101 name = SvPV(sv, n_a);
2102 TAINT_PROPER("truncate");
cbdc8872 2103#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2104 if (truncate(name, len) < 0)
2105 result = 0;
cbdc8872 2106#else
d05c1ba0
JH		 2107 {
2108 int tmpfd;
2109
2110 if ((tmpfd = PerlLIO_open(name, O_RDWR)) < 0)
cbdc8872 2111 result = 0;
d05c1ba0
JH		 2112 else {
2113 if (my_chsize(tmpfd, len) < 0)
2114 result = 0;
2115 PerlLIO_close(tmpfd);
2116 }
cbdc8872 2117 }
a0d0e21e 2118#endif
d05c1ba0 2119 }
a0d0e21e 2120
d05c1ba0
JH		 2121 if (result)
2122 RETPUSHYES;
2123 if (!errno)
91487cfc 2124 SETERRNO(EBADF,RMS$_IFI);
d05c1ba0
JH		 2125 RETPUSHUNDEF;
2126 }
a0d0e21e 2127#else
cea2e8a9 2128 DIE(aTHX_ "truncate not implemented");
a0d0e21e
LW		 2129#endif
2130}
2131
2132PP(pp_fcntl)
2133{
cea2e8a9 2134 return pp_ioctl();
a0d0e21e
LW		 2135}
2136
2137PP(pp_ioctl)
2138{
39644a26 2139 dSP; dTARGET;
748a9306 2140 SV *argsv = POPs;
3bb7c1b4 2141 unsigned int func = POPu;
533c011a 2142 int optype = PL_op->op_type;
a0d0e21e 2143 char *s;
324aa91a 2144 IV retval;
a0d0e21e 2145 GV *gv = (GV*)POPs;
c289d2f7 2146 IO *io = gv ? GvIOn(gv) : 0;
a0d0e21e 2147
748a9306 2148 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2149 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2150 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2151 SETERRNO(EBADF,RMS$_IFI); /* well, sort of... */
a0d0e21e
LW		 2152 RETPUSHUNDEF;
2153 }
2154
748a9306 2155 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2156 STRLEN len;
324aa91a 2157 STRLEN need;
748a9306 2158 s = SvPV_force(argsv, len);
324aa91a
HF		 2159 need = IOCPARM_LEN(func);
2160 if (len < need) {
2161 s = Sv_Grow(argsv, need + 1);
2162 SvCUR_set(argsv, need);
a0d0e21e
LW		 2163 }
2164
748a9306 2165 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2166 }
2167 else {
748a9306 2168 retval = SvIV(argsv);
c529f79d 2169 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2170 }
2171
2172 TAINT_PROPER(optype == OP_IOCTL ? "ioctl" : "fcntl");
2173
2174 if (optype == OP_IOCTL)
2175#ifdef HAS_IOCTL
76e3520e 2176 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2177#else
cea2e8a9 2178 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2179#endif
2180 else
c214f4ad
WB		 2181#ifndef HAS_FCNTL
2182 DIE(aTHX_ "fcntl is not implemented");
2183#else
55497cff 2184#if defined(OS2) && defined(__EMX__)
760ac839 2185 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2186#else
760ac839 2187 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2188#endif
a0d0e21e 2189
748a9306
LW		 2190 if (SvPOK(argsv)) {
2191 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2192 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2193 OP_NAME(PL_op));
748a9306
LW		 2194 s[SvCUR(argsv)] = 0; /* put our null back */
2195 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2196 }
2197
2198 if (retval == -1)
2199 RETPUSHUNDEF;
2200 if (retval != 0) {
2201 PUSHi(retval);
2202 }
2203 else {
8903cb82 2204 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2205 }
4808266b 2206#endif
c214f4ad 2207 RETURN;
a0d0e21e
LW		 2208}
2209
2210PP(pp_flock)
2211{
9cad6237 2212#ifdef FLOCK
39644a26 2213 dSP; dTARGET;
a0d0e21e
LW		 2214 I32 value;
2215 int argtype;
2216 GV *gv;
bc37a18f 2217 IO *io = NULL;
760ac839 2218 PerlIO *fp;
16d20bd9 2219
a0d0e21e 2220 argtype = POPi;
32da55ab 2221 if (MAXARG == 0)
3280af22 2222 gv = PL_last_in_gv;
a0d0e21e
LW		 2223 else
2224 gv = (GV*)POPs;
bc37a18f
RG		 2225 if (gv && (io = GvIO(gv)))
2226 fp = IoIFP(io);
2227 else {
a0d0e21e 2228 fp = Nullfp;
bc37a18f
RG		 2229 io = NULL;
2230 }
a0d0e21e 2231 if (fp) {
68dc0745 2232 (void)PerlIO_flush(fp);
76e3520e 2233 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2234 }
cb50131a 2235 else {
bc37a18f
RG		 2236 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2237 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2238 value = 0;
91487cfc 2239 SETERRNO(EBADF,RMS$_IFI);
cb50131a 2240 }
a0d0e21e
LW		 2241 PUSHi(value);
2242 RETURN;
2243#else
cea2e8a9 2244 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2245#endif
2246}
2247
2248/* Sockets. */
2249
2250PP(pp_socket)
2251{
a0d0e21e 2252#ifdef HAS_SOCKET
9cad6237 2253 dSP;
a0d0e21e
LW		 2254 GV *gv;
2255 register IO *io;
2256 int protocol = POPi;
2257 int type = POPi;
2258 int domain = POPi;
2259 int fd;
2260
2261 gv = (GV*)POPs;
c289d2f7 2262 io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2263
c289d2f7
JH		 2264 if (!gv || !io) {
2265 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2266 report_evil_fh(gv, io, PL_op->op_type);
2267 if (IoIFP(io))
2268 do_close(gv, FALSE);
91487cfc 2269 SETERRNO(EBADF,LIB$_INVARG);
a0d0e21e
LW		 2270 RETPUSHUNDEF;
2271 }
2272
57171420
BS		 2273 if (IoIFP(io))
2274 do_close(gv, FALSE);
2275
a0d0e21e 2276 TAINT_PROPER("socket");
6ad3d225 2277 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2278 if (fd < 0)
2279 RETPUSHUNDEF;
760ac839
LW		 2280 IoIFP(io) = PerlIO_fdopen(fd, "r"); /* stdio gets confused about sockets */
2281 IoOFP(io) = PerlIO_fdopen(fd, "w");
50952442 2282 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2283 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2284 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2285 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2286 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2287 RETPUSHUNDEF;
2288 }
8d2a6795
GS		 2289#if defined(HAS_FCNTL) && defined(F_SETFD)
2290 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2291#endif
a0d0e21e 2292
d5ff79b3
OF		 2293#ifdef EPOC
2294 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2295#endif
2296
a0d0e21e
LW		 2297 RETPUSHYES;
2298#else
cea2e8a9 2299 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2300#endif
2301}
2302
2303PP(pp_sockpair)
2304{
c95c94b1 2305#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
76ffd3b9 2306 dSP;
a0d0e21e
LW		 2307 GV *gv1;
2308 GV *gv2;
2309 register IO *io1;
2310 register IO *io2;
2311 int protocol = POPi;
2312 int type = POPi;
2313 int domain = POPi;
2314 int fd[2];
2315
2316 gv2 = (GV*)POPs;
2317 gv1 = (GV*)POPs;
c289d2f7
JH		 2318 io1 = gv1 ? GvIOn(gv1) : NULL;
2319 io2 = gv2 ? GvIOn(gv2) : NULL;
2320 if (!gv1 || !gv2 || !io1 || !io2) {
2321 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2322 if (!gv1 || !io1)
2323 report_evil_fh(gv1, io1, PL_op->op_type);
2324 if (!gv2 || !io2)
2325 report_evil_fh(gv1, io2, PL_op->op_type);
2326 }
2327 if (IoIFP(io1))
2328 do_close(gv1, FALSE);
2329 if (IoIFP(io2))
2330 do_close(gv2, FALSE);
a0d0e21e 2331 RETPUSHUNDEF;
c289d2f7 2332 }
a0d0e21e 2333
dc0d0a5f
JH		 2334 if (IoIFP(io1))
2335 do_close(gv1, FALSE);
2336 if (IoIFP(io2))
2337 do_close(gv2, FALSE);
57171420 2338
a0d0e21e 2339 TAINT_PROPER("socketpair");
6ad3d225 2340 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2341 RETPUSHUNDEF;
760ac839
LW		 2342 IoIFP(io1) = PerlIO_fdopen(fd[0], "r");
2343 IoOFP(io1) = PerlIO_fdopen(fd[0], "w");
50952442 2344 IoTYPE(io1) = IoTYPE_SOCKET;
760ac839
LW		 2345 IoIFP(io2) = PerlIO_fdopen(fd[1], "r");
2346 IoOFP(io2) = PerlIO_fdopen(fd[1], "w");
50952442 2347 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2348 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2349 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2350 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2351 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2352 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2353 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2354 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2355 RETPUSHUNDEF;
2356 }
8d2a6795
GS		 2357#if defined(HAS_FCNTL) && defined(F_SETFD)
2358 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2359 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2360#endif
a0d0e21e
LW		 2361
2362 RETPUSHYES;
2363#else
cea2e8a9 2364 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2365#endif
2366}
2367
2368PP(pp_bind)
2369{
a0d0e21e 2370#ifdef HAS_SOCKET
9cad6237 2371 dSP;
eec2d3df 2372#ifdef MPE /* Requires PRIV mode to bind() to ports < 1024 */
82b3da69
JH		 2373 extern void GETPRIVMODE();
2374 extern void GETUSERMODE();
eec2d3df 2375#endif
748a9306 2376 SV *addrsv = POPs;
a0d0e21e
LW		 2377 char *addr;
2378 GV *gv = (GV*)POPs;
2379 register IO *io = GvIOn(gv);
2380 STRLEN len;
eec2d3df
GS		 2381 int bind_ok = 0;
2382#ifdef MPE
2383 int mpeprivmode = 0;
2384#endif
a0d0e21e
LW		 2385
2386 if (!io || !IoIFP(io))
2387 goto nuts;
2388
748a9306 2389 addr = SvPV(addrsv, len);
a0d0e21e 2390 TAINT_PROPER("bind");
eec2d3df
GS		 2391#ifdef MPE /* Deal with MPE bind() peculiarities */
2392 if (((struct sockaddr *)addr)->sa_family == AF_INET) {
2393 /* The address *MUST* stupidly be zero. */
2394 ((struct sockaddr_in *)addr)->sin_addr.s_addr = INADDR_ANY;
2395 /* PRIV mode is required to bind() to ports < 1024. */
2396 if (((struct sockaddr_in *)addr)->sin_port < 1024 &&
2397 ((struct sockaddr_in *)addr)->sin_port > 0) {
2398 GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
2399 mpeprivmode = 1;
2400 }
2401 }
2402#endif /* MPE */
2403 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2404 (struct sockaddr *)addr, len) >= 0)
2405 bind_ok = 1;
2406
2407#ifdef MPE /* Switch back to USER mode */
2408 if (mpeprivmode)
2409 GETUSERMODE();
2410#endif /* MPE */
2411
2412 if (bind_ok)
a0d0e21e
LW		 2413 RETPUSHYES;
2414 else
2415 RETPUSHUNDEF;
2416
2417nuts:
599cee73 2418 if (ckWARN(WARN_CLOSED))
bc37a18f 2419 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2420 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2421 RETPUSHUNDEF;
2422#else
cea2e8a9 2423 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2424#endif
2425}
2426
2427PP(pp_connect)
2428{
a0d0e21e 2429#ifdef HAS_SOCKET
9cad6237 2430 dSP;
748a9306 2431 SV *addrsv = POPs;
a0d0e21e
LW		 2432 char *addr;
2433 GV *gv = (GV*)POPs;
2434 register IO *io = GvIOn(gv);
2435 STRLEN len;
2436
2437 if (!io || !IoIFP(io))
2438 goto nuts;
2439
748a9306 2440 addr = SvPV(addrsv, len);
a0d0e21e 2441 TAINT_PROPER("connect");
6ad3d225 2442 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2443 RETPUSHYES;
2444 else
2445 RETPUSHUNDEF;
2446
2447nuts:
599cee73 2448 if (ckWARN(WARN_CLOSED))
bc37a18f 2449 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2450 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2451 RETPUSHUNDEF;
2452#else
cea2e8a9 2453 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2454#endif
2455}
2456
2457PP(pp_listen)
2458{
a0d0e21e 2459#ifdef HAS_SOCKET
9cad6237 2460 dSP;
a0d0e21e
LW		 2461 int backlog = POPi;
2462 GV *gv = (GV*)POPs;
c289d2f7 2463 register IO *io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2464
c289d2f7 2465 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2466 goto nuts;
2467
6ad3d225 2468 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2469 RETPUSHYES;
2470 else
2471 RETPUSHUNDEF;
2472
2473nuts:
599cee73 2474 if (ckWARN(WARN_CLOSED))
bc37a18f 2475 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2476 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2477 RETPUSHUNDEF;
2478#else
cea2e8a9 2479 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2480#endif
2481}
2482
2483PP(pp_accept)
2484{
a0d0e21e 2485#ifdef HAS_SOCKET
9cad6237 2486 dSP; dTARGET;
a0d0e21e
LW		 2487 GV *ngv;
2488 GV *ggv;
2489 register IO *nstio;
2490 register IO *gstio;
4633a7c4 2491 struct sockaddr saddr; /* use a struct to avoid alignment problems */
1e422769 2492 Sock_size_t len = sizeof saddr;
a0d0e21e 2493 int fd;
72f496dc 2494 int fd2;
a0d0e21e
LW		 2495
2496 ggv = (GV*)POPs;
2497 ngv = (GV*)POPs;
2498
2499 if (!ngv)
2500 goto badexit;
2501 if (!ggv)
2502 goto nuts;
2503
2504 gstio = GvIO(ggv);
2505 if (!gstio || !IoIFP(gstio))
2506 goto nuts;
2507
2508 nstio = GvIOn(ngv);
6ad3d225 2509 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *)&saddr, &len);
a0d0e21e
LW		 2510 if (fd < 0)
2511 goto badexit;
a70048fb
AB		 2512 if (IoIFP(nstio))
2513 do_close(ngv, FALSE);
760ac839 2514 IoIFP(nstio) = PerlIO_fdopen(fd, "r");
72f496dc
NIS		 2515 /* FIXME: we dup(fd) here so that refcounting of fd's does not inhibit
2516 fclose of IoOFP's FILE * - and hence leak memory.
2517 Special treatment of _this_ case of IoIFP != IoOFP seems wrong.
2518 */
2519 IoOFP(nstio) = PerlIO_fdopen(fd2 = PerlLIO_dup(fd), "w");
50952442 2520 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2521 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2522 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2523 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2524 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2525 goto badexit;
2526 }
8d2a6795
GS		 2527#if defined(HAS_FCNTL) && defined(F_SETFD)
2528 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
72f496dc 2529 fcntl(fd2, F_SETFD, fd2 > PL_maxsysfd); /* ensure close-on-exec */
8d2a6795 2530#endif
a0d0e21e 2531
ed79a026 2532#ifdef EPOC
a9f1f6b0
OF		 2533 len = sizeof saddr; /* EPOC somehow truncates info */
2534 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026
OF		 2535#endif
2536
748a9306 2537 PUSHp((char *)&saddr, len);
a0d0e21e
LW		 2538 RETURN;
2539
2540nuts:
599cee73 2541 if (ckWARN(WARN_CLOSED))
bc37a18f 2542 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
91487cfc 2543 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2544
2545badexit:
2546 RETPUSHUNDEF;
2547
2548#else
cea2e8a9 2549 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2550#endif
2551}
2552
2553PP(pp_shutdown)
2554{
a0d0e21e 2555#ifdef HAS_SOCKET
9cad6237 2556 dSP; dTARGET;
a0d0e21e
LW		 2557 int how = POPi;
2558 GV *gv = (GV*)POPs;
2559 register IO *io = GvIOn(gv);
2560
2561 if (!io || !IoIFP(io))
2562 goto nuts;
2563
6ad3d225 2564 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2565 RETURN;
2566
2567nuts:
599cee73 2568 if (ckWARN(WARN_CLOSED))
bc37a18f 2569 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2570 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2571 RETPUSHUNDEF;
2572#else
cea2e8a9 2573 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2574#endif
2575}
2576
2577PP(pp_gsockopt)
2578{
2579#ifdef HAS_SOCKET
cea2e8a9 2580 return pp_ssockopt();
a0d0e21e 2581#else
cea2e8a9 2582 DIE(aTHX_ PL_no_sock_func, "getsockopt");
a0d0e21e
LW		 2583#endif
2584}
2585
2586PP(pp_ssockopt)
2587{
a0d0e21e 2588#ifdef HAS_SOCKET
9cad6237 2589 dSP;
533c011a 2590 int optype = PL_op->op_type;
a0d0e21e
LW		 2591 SV *sv;
2592 int fd;
2593 unsigned int optname;
2594 unsigned int lvl;
2595 GV *gv;
2596 register IO *io;
1e422769 2597 Sock_size_t len;
a0d0e21e
LW		 2598
2599 if (optype == OP_GSOCKOPT)
2600 sv = sv_2mortal(NEWSV(22, 257));
2601 else
2602 sv = POPs;
2603 optname = (unsigned int) POPi;
2604 lvl = (unsigned int) POPi;
2605
2606 gv = (GV*)POPs;
2607 io = GvIOn(gv);
2608 if (!io || !IoIFP(io))
2609 goto nuts;
2610
760ac839 2611 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2612 switch (optype) {
2613 case OP_GSOCKOPT:
748a9306 2614 SvGROW(sv, 257);
a0d0e21e 2615 (void)SvPOK_only(sv);
748a9306
LW		 2616 SvCUR_set(sv,256);
2617 *SvEND(sv) ='\0';
1e422769 2618 len = SvCUR(sv);
6ad3d225 2619 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2620 goto nuts2;
1e422769 2621 SvCUR_set(sv, len);
748a9306 2622 *SvEND(sv) ='\0';
a0d0e21e
LW		 2623 PUSHs(sv);
2624 break;
2625 case OP_SSOCKOPT: {
1e422769 2626 char *buf;
2627 int aint;
2628 if (SvPOKp(sv)) {
2d8e6c8d
GS		 2629 STRLEN l;
2630 buf = SvPV(sv, l);
2631 len = l;
1e422769 2632 }
56ee1660 2633 else {
a0d0e21e
LW		 2634 aint = (int)SvIV(sv);
2635 buf = (char*)&aint;
2636 len = sizeof(int);
2637 }
6ad3d225 2638 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2639 goto nuts2;
3280af22 2640 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2641 }
2642 break;
2643 }
2644 RETURN;
2645
2646nuts:
599cee73 2647 if (ckWARN(WARN_CLOSED))
bc37a18f 2648 report_evil_fh(gv, io, optype);
91487cfc 2649 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2650nuts2:
2651 RETPUSHUNDEF;
2652
2653#else
cea2e8a9 2654 DIE(aTHX_ PL_no_sock_func, "setsockopt");
a0d0e21e
LW		 2655#endif
2656}
2657
2658PP(pp_getsockname)
2659{
2660#ifdef HAS_SOCKET
cea2e8a9 2661 return pp_getpeername();
a0d0e21e 2662#else
cea2e8a9 2663 DIE(aTHX_ PL_no_sock_func, "getsockname");
a0d0e21e
LW		 2664#endif
2665}
2666
2667PP(pp_getpeername)
2668{
a0d0e21e 2669#ifdef HAS_SOCKET
9cad6237 2670 dSP;
533c011a 2671 int optype = PL_op->op_type;
a0d0e21e
LW		 2672 SV *sv;
2673 int fd;
2674 GV *gv = (GV*)POPs;
2675 register IO *io = GvIOn(gv);
1e422769 2676 Sock_size_t len;
a0d0e21e
LW		 2677
2678 if (!io || !IoIFP(io))
2679 goto nuts;
2680
2681 sv = sv_2mortal(NEWSV(22, 257));
748a9306 2682 (void)SvPOK_only(sv);
1e422769 2683 len = 256;
2684 SvCUR_set(sv, len);
748a9306 2685 *SvEND(sv) ='\0';
760ac839 2686 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2687 switch (optype) {
2688 case OP_GETSOCKNAME:
6ad3d225 2689 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2690 goto nuts2;
2691 break;
2692 case OP_GETPEERNAME:
6ad3d225 2693 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2694 goto nuts2;
490ab354
JH		 2695#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2696 {
2697 static const char nowhere[] = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
2698 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2699 if (((struct sockaddr *)SvPVX(sv))->sa_family == AF_INET &&
2700 !memcmp((char *)SvPVX(sv) + sizeof(u_short), nowhere,
2701 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2702 goto nuts2;
490ab354
JH		 2703 }
2704 }
2705#endif
a0d0e21e
LW		 2706 break;
2707 }
13826f2c
CS		 2708#ifdef BOGUS_GETNAME_RETURN
2709 /* Interactive Unix, getpeername() and getsockname()
2710 does not return valid namelen */
1e422769 2711 if (len == BOGUS_GETNAME_RETURN)
2712 len = sizeof(struct sockaddr);
13826f2c 2713#endif
1e422769 2714 SvCUR_set(sv, len);
748a9306 2715 *SvEND(sv) ='\0';
a0d0e21e
LW		 2716 PUSHs(sv);
2717 RETURN;
2718
2719nuts:
599cee73 2720 if (ckWARN(WARN_CLOSED))
bc37a18f 2721 report_evil_fh(gv, io, optype);
91487cfc 2722 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2723nuts2:
2724 RETPUSHUNDEF;
2725
2726#else
cea2e8a9 2727 DIE(aTHX_ PL_no_sock_func, "getpeername");
a0d0e21e
LW		 2728#endif
2729}
2730
2731/* Stat calls. */
2732
2733PP(pp_lstat)
2734{
cea2e8a9 2735 return pp_stat();
a0d0e21e
LW		 2736}
2737
2738PP(pp_stat)
2739{
39644a26 2740 dSP;
2dd78f96 2741 GV *gv;
54310121 2742 I32 gimme;
a0d0e21e 2743 I32 max = 13;
2d8e6c8d 2744 STRLEN n_a;
a0d0e21e 2745
533c011a 2746 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2747 gv = cGVOP_gv;
8a4e5b40 2748 if (PL_op->op_type == OP_LSTAT) {
5d3e98de
RGS		 2749 if (gv != PL_defgv) {
2750 if (ckWARN(WARN_IO))
9014280d 2751 Perl_warner(aTHX_ packWARN(WARN_IO),
5d3e98de
RGS		 2752 "lstat() on filehandle %s", GvENAME(gv));
2753 } else if (PL_laststype != OP_LSTAT)
8a4e5b40 2754 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2755 }
2756
748a9306 2757 do_fstat:
2dd78f96 2758 if (gv != PL_defgv) {
3280af22 2759 PL_laststype = OP_STAT;
2dd78f96 2760 PL_statgv = gv;
3280af22 2761 sv_setpv(PL_statname, "");
2dd78f96
JH		 2762 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2763 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
a0d0e21e 2764 }
9ddeeac9 2765 if (PL_laststatval < 0) {
2dd78f96
JH		 2766 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2767 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2768 max = 0;
9ddeeac9 2769 }
a0d0e21e
LW		 2770 }
2771 else {
748a9306
LW		 2772 SV* sv = POPs;
2773 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2774 gv = (GV*)sv;
748a9306
LW		 2775 goto do_fstat;
2776 }
2777 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 2778 gv = (GV*)SvRV(sv);
5d3e98de 2779 if (PL_op->op_type == OP_LSTAT && ckWARN(WARN_IO))
9014280d 2780 Perl_warner(aTHX_ packWARN(WARN_IO),
5d3e98de 2781 "lstat() on filehandle %s", GvENAME(gv));
748a9306
LW		 2782 goto do_fstat;
2783 }
2d8e6c8d 2784 sv_setpv(PL_statname, SvPV(sv,n_a));
3280af22 2785 PL_statgv = Nullgv;
a0d0e21e 2786#ifdef HAS_LSTAT
533c011a
NIS		 2787 PL_laststype = PL_op->op_type;
2788 if (PL_op->op_type == OP_LSTAT)
2d8e6c8d 2789 PL_laststatval = PerlLIO_lstat(SvPV(PL_statname, n_a), &PL_statcache);
a0d0e21e
LW		 2790 else
2791#endif
2d8e6c8d 2792 PL_laststatval = PerlLIO_stat(SvPV(PL_statname, n_a), &PL_statcache);
3280af22 2793 if (PL_laststatval < 0) {
2d8e6c8d 2794 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(PL_statname, n_a), '\n'))
9014280d 2795 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW		 2796 max = 0;
2797 }
2798 }
2799
54310121 2800 gimme = GIMME_V;
2801 if (gimme != G_ARRAY) {
2802 if (gimme != G_VOID)
2803 XPUSHs(boolSV(max));
2804 RETURN;
a0d0e21e
LW		 2805 }
2806 if (max) {
36477c24 2807 EXTEND(SP, max);
2808 EXTEND_MORTAL(max);
1ff81528
PL		 2809 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2810 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2811 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2812 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2813#if Uid_t_size > IVSIZE
2814 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2815#else
23dcd6c8 2816# if Uid_t_sign <= 0
1ff81528 2817 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2818# else
2819 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2820# endif
146174a9 2821#endif
301e8125 2822#if Gid_t_size > IVSIZE
146174a9
CB		 2823 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2824#else
23dcd6c8 2825# if Gid_t_sign <= 0
1ff81528 2826 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2827# else
2828 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2829# endif
146174a9 2830#endif
cbdc8872 2831#ifdef USE_STAT_RDEV
1ff81528 2832 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2833#else
79cb57f6 2834 PUSHs(sv_2mortal(newSVpvn("", 0)));
cbdc8872 2835#endif
146174a9
CB		 2836#if Off_t_size > IVSIZE
2837 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_size)));
2838#else
1ff81528 2839 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2840#endif
cbdc8872 2841#ifdef BIG_TIME
172ae379
JH		 2842 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2843 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2844 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2845#else
1ff81528
PL		 2846 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2847 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2848 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
cbdc8872 2849#endif
a0d0e21e 2850#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2851 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2852 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2853#else
79cb57f6
GS		 2854 PUSHs(sv_2mortal(newSVpvn("", 0)));
2855 PUSHs(sv_2mortal(newSVpvn("", 0)));
a0d0e21e
LW		 2856#endif
2857 }
2858 RETURN;
2859}
2860
2861PP(pp_ftrread)
2862{
9cad6237 2863 I32 result;
2a3ff820 2864 dSP;
5ff3f7a4 2865#if defined(HAS_ACCESS) && defined(R_OK)
2d8e6c8d 2866 STRLEN n_a;
5ff3f7a4 2867 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2868 result = access(TOPpx, R_OK);
5ff3f7a4
GS		 2869 if (result == 0)
2870 RETPUSHYES;
2871 if (result < 0)
2872 RETPUSHUNDEF;
2873 RETPUSHNO;
22865c03
GS		 2874 }
2875 else
cea2e8a9 2876 result = my_stat();
5ff3f7a4 2877#else
cea2e8a9 2878 result = my_stat();
5ff3f7a4 2879#endif
22865c03 2880 SPAGAIN;
a0d0e21e
LW		 2881 if (result < 0)
2882 RETPUSHUNDEF;
3280af22 2883 if (cando(S_IRUSR, 0, &PL_statcache))
a0d0e21e
LW		 2884 RETPUSHYES;
2885 RETPUSHNO;
2886}
2887
2888PP(pp_ftrwrite)
2889{
9cad6237 2890 I32 result;
2a3ff820 2891 dSP;
5ff3f7a4 2892#if defined(HAS_ACCESS) && defined(W_OK)
2d8e6c8d 2893 STRLEN n_a;
5ff3f7a4 2894 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2895 result = access(TOPpx, W_OK);
5ff3f7a4
GS		 2896 if (result == 0)
2897 RETPUSHYES;
2898 if (result < 0)
2899 RETPUSHUNDEF;
2900 RETPUSHNO;
22865c03
GS		 2901 }
2902 else
cea2e8a9 2903 result = my_stat();
5ff3f7a4 2904#else
cea2e8a9 2905 result = my_stat();
5ff3f7a4 2906#endif
22865c03 2907 SPAGAIN;
a0d0e21e
LW		 2908 if (result < 0)
2909 RETPUSHUNDEF;
3280af22 2910 if (cando(S_IWUSR, 0, &PL_statcache))
a0d0e21e
LW		 2911 RETPUSHYES;
2912 RETPUSHNO;
2913}
2914
2915PP(pp_ftrexec)
2916{
9cad6237 2917 I32 result;
2a3ff820 2918 dSP;
5ff3f7a4 2919#if defined(HAS_ACCESS) && defined(X_OK)
2d8e6c8d 2920 STRLEN n_a;
5ff3f7a4 2921 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2922 result = access(TOPpx, X_OK);
5ff3f7a4
GS		 2923 if (result == 0)
2924 RETPUSHYES;
2925 if (result < 0)
2926 RETPUSHUNDEF;
2927 RETPUSHNO;
22865c03
GS		 2928 }
2929 else
cea2e8a9 2930 result = my_stat();
5ff3f7a4 2931#else
cea2e8a9 2932 result = my_stat();
5ff3f7a4 2933#endif
22865c03 2934 SPAGAIN;
a0d0e21e
LW		 2935 if (result < 0)
2936 RETPUSHUNDEF;
3280af22 2937 if (cando(S_IXUSR, 0, &PL_statcache))
a0d0e21e
LW		 2938 RETPUSHYES;
2939 RETPUSHNO;
2940}
2941
2942PP(pp_fteread)
2943{
9cad6237 2944 I32 result;
2a3ff820 2945 dSP;
5ff3f7a4 2946#ifdef PERL_EFF_ACCESS_R_OK
2d8e6c8d 2947 STRLEN n_a;
5ff3f7a4 2948 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2949 result = PERL_EFF_ACCESS_R_OK(TOPpx);
5ff3f7a4
GS		 2950 if (result == 0)
2951 RETPUSHYES;
2952 if (result < 0)
2953 RETPUSHUNDEF;
2954 RETPUSHNO;
22865c03
GS		 2955 }
2956 else
cea2e8a9 2957 result = my_stat();
5ff3f7a4 2958#else
cea2e8a9 2959 result = my_stat();
5ff3f7a4 2960#endif
22865c03 2961 SPAGAIN;
a0d0e21e
LW		 2962 if (result < 0)
2963 RETPUSHUNDEF;
3280af22 2964 if (cando(S_IRUSR, 1, &PL_statcache))
a0d0e21e
LW		 2965 RETPUSHYES;
2966 RETPUSHNO;
2967}
2968
2969PP(pp_ftewrite)
2970{
9cad6237 2971 I32 result;
2a3ff820 2972 dSP;
5ff3f7a4 2973#ifdef PERL_EFF_ACCESS_W_OK
2d8e6c8d 2974 STRLEN n_a;
5ff3f7a4 2975 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2976 result = PERL_EFF_ACCESS_W_OK(TOPpx);
5ff3f7a4
GS		 2977 if (result == 0)
2978 RETPUSHYES;
2979 if (result < 0)
2980 RETPUSHUNDEF;
2981 RETPUSHNO;
22865c03
GS		 2982 }
2983 else
cea2e8a9 2984 result = my_stat();
5ff3f7a4 2985#else
cea2e8a9 2986 result = my_stat();
5ff3f7a4 2987#endif
22865c03 2988 SPAGAIN;
a0d0e21e
LW		 2989 if (result < 0)
2990 RETPUSHUNDEF;
3280af22 2991 if (cando(S_IWUSR, 1, &PL_statcache))
a0d0e21e
LW		 2992 RETPUSHYES;
2993 RETPUSHNO;
2994}
2995
2996PP(pp_fteexec)
2997{
9cad6237 2998 I32 result;
2a3ff820 2999 dSP;
5ff3f7a4 3000#ifdef PERL_EFF_ACCESS_X_OK
2d8e6c8d 3001 STRLEN n_a;
5ff3f7a4 3002 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 3003 result = PERL_EFF_ACCESS_X_OK(TOPpx);
5ff3f7a4
GS		 3004 if (result == 0)
3005 RETPUSHYES;
3006 if (result < 0)
3007 RETPUSHUNDEF;
3008 RETPUSHNO;
22865c03
GS		 3009 }
3010 else
cea2e8a9 3011 result = my_stat();
5ff3f7a4 3012#else
cea2e8a9 3013 result = my_stat();
5ff3f7a4 3014#endif
22865c03 3015 SPAGAIN;
a0d0e21e
LW		 3016 if (result < 0)
3017 RETPUSHUNDEF;
3280af22 3018 if (cando(S_IXUSR, 1, &PL_statcache))
a0d0e21e
LW		 3019 RETPUSHYES;
3020 RETPUSHNO;
3021}
3022
3023PP(pp_ftis)
3024{
9cad6237 3025 I32 result = my_stat();
2a3ff820 3026 dSP;
a0d0e21e
LW		 3027 if (result < 0)
3028 RETPUSHUNDEF;
3029 RETPUSHYES;
3030}
3031
3032PP(pp_fteowned)
3033{
cea2e8a9 3034 return pp_ftrowned();
a0d0e21e
LW		 3035}
3036
3037PP(pp_ftrowned)
3038{
9cad6237 3039 I32 result = my_stat();
2a3ff820 3040 dSP;
a0d0e21e
LW		 3041 if (result < 0)
3042 RETPUSHUNDEF;
146174a9
CB		 3043 if (PL_statcache.st_uid == (PL_op->op_type == OP_FTEOWNED ?
3044 PL_euid : PL_uid) )
a0d0e21e
LW		 3045 RETPUSHYES;
3046 RETPUSHNO;
3047}
3048
3049PP(pp_ftzero)
3050{
9cad6237 3051 I32 result = my_stat();
2a3ff820 3052 dSP;
a0d0e21e
LW		 3053 if (result < 0)
3054 RETPUSHUNDEF;
146174a9 3055 if (PL_statcache.st_size == 0)
a0d0e21e
LW		 3056 RETPUSHYES;
3057 RETPUSHNO;
3058}
3059
3060PP(pp_ftsize)
3061{
9cad6237 3062 I32 result = my_stat();
2a3ff820 3063 dSP; dTARGET;
a0d0e21e
LW		 3064 if (result < 0)
3065 RETPUSHUNDEF;
146174a9
CB		 3066#if Off_t_size > IVSIZE
3067 PUSHn(PL_statcache.st_size);
3068#else
3280af22 3069 PUSHi(PL_statcache.st_size);
146174a9 3070#endif
a0d0e21e
LW		 3071 RETURN;
3072}
3073
3074PP(pp_ftmtime)
3075{
9cad6237 3076 I32 result = my_stat();
2a3ff820 3077 dSP; dTARGET;
a0d0e21e
LW		 3078 if (result < 0)
3079 RETPUSHUNDEF;
c6419e06 3080 PUSHn( (PL_basetime - PL_statcache.st_mtime) / 86400.0 );
a0d0e21e
LW		 3081 RETURN;
3082}
3083
3084PP(pp_ftatime)
3085{
9cad6237 3086 I32 result = my_stat();
2a3ff820 3087 dSP; dTARGET;
a0d0e21e
LW		 3088 if (result < 0)
3089 RETPUSHUNDEF;
c6419e06 3090 PUSHn( (PL_basetime - PL_statcache.st_atime) / 86400.0 );
a0d0e21e
LW		 3091 RETURN;
3092}
3093
3094PP(pp_ftctime)
3095{
9cad6237 3096 I32 result = my_stat();
2a3ff820 3097 dSP; dTARGET;
a0d0e21e
LW		 3098 if (result < 0)
3099 RETPUSHUNDEF;
c6419e06 3100 PUSHn( (PL_basetime - PL_statcache.st_ctime) / 86400.0 );
a0d0e21e
LW		 3101 RETURN;
3102}
3103
3104PP(pp_ftsock)
3105{
9cad6237 3106 I32 result = my_stat();
2a3ff820 3107 dSP;
a0d0e21e
LW		 3108 if (result < 0)
3109 RETPUSHUNDEF;
3280af22 3110 if (S_ISSOCK(PL_statcache.st_mode))
a0d0e21e
LW		 3111 RETPUSHYES;
3112 RETPUSHNO;
3113}
3114
3115PP(pp_ftchr)
3116{
9cad6237 3117 I32 result = my_stat();
2a3ff820 3118 dSP;
a0d0e21e
LW		 3119 if (result < 0)
3120 RETPUSHUNDEF;
3280af22 3121 if (S_ISCHR(PL_statcache.st_mode))
a0d0e21e
LW		 3122 RETPUSHYES;
3123 RETPUSHNO;
3124}
3125
3126PP(pp_ftblk)
3127{
9cad6237 3128 I32 result = my_stat();
2a3ff820 3129 dSP;
a0d0e21e
LW		 3130 if (result < 0)
3131 RETPUSHUNDEF;
3280af22 3132 if (S_ISBLK(PL_statcache.st_mode))
a0d0e21e
LW		 3133 RETPUSHYES;
3134 RETPUSHNO;
3135}
3136
3137PP(pp_ftfile)
3138{
9cad6237 3139 I32 result = my_stat();
2a3ff820 3140 dSP;
a0d0e21e
LW		 3141 if (result < 0)
3142 RETPUSHUNDEF;
3280af22 3143 if (S_ISREG(PL_statcache.st_mode))
a0d0e21e
LW		 3144 RETPUSHYES;
3145 RETPUSHNO;
3146}
3147
3148PP(pp_ftdir)
3149{
9cad6237 3150 I32 result = my_stat();
2a3ff820 3151 dSP;
a0d0e21e
LW		 3152 if (result < 0)
3153 RETPUSHUNDEF;
3280af22 3154 if (S_ISDIR(PL_statcache.st_mode))
a0d0e21e
LW		 3155 RETPUSHYES;
3156 RETPUSHNO;
3157}
3158
3159PP(pp_ftpipe)
3160{
9cad6237 3161 I32 result = my_stat();
2a3ff820 3162 dSP;
a0d0e21e
LW		 3163 if (result < 0)
3164 RETPUSHUNDEF;
3280af22 3165 if (S_ISFIFO(PL_statcache.st_mode))
a0d0e21e
LW		 3166 RETPUSHYES;
3167 RETPUSHNO;
3168}
3169
3170PP(pp_ftlink)
3171{
9cad6237 3172 I32 result = my_lstat();
2a3ff820 3173 dSP;
a0d0e21e
LW		 3174 if (result < 0)
3175 RETPUSHUNDEF;
3280af22 3176 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e
LW		 3177 RETPUSHYES;
3178 RETPUSHNO;
3179}
3180
3181PP(pp_ftsuid)
3182{
39644a26 3183 dSP;
a0d0e21e 3184#ifdef S_ISUID
cea2e8a9 3185 I32 result = my_stat();
a0d0e21e
LW		 3186 SPAGAIN;
3187 if (result < 0)
3188 RETPUSHUNDEF;
3280af22 3189 if (PL_statcache.st_mode & S_ISUID)
a0d0e21e
LW		 3190 RETPUSHYES;
3191#endif
3192 RETPUSHNO;
3193}
3194
3195PP(pp_ftsgid)
3196{
39644a26 3197 dSP;
a0d0e21e 3198#ifdef S_ISGID
cea2e8a9 3199 I32 result = my_stat();
a0d0e21e
LW		 3200 SPAGAIN;
3201 if (result < 0)
3202 RETPUSHUNDEF;
3280af22 3203 if (PL_statcache.st_mode & S_ISGID)
a0d0e21e
LW		 3204 RETPUSHYES;
3205#endif
3206 RETPUSHNO;
3207}
3208
3209PP(pp_ftsvtx)
3210{
39644a26 3211 dSP;
a0d0e21e 3212#ifdef S_ISVTX
cea2e8a9 3213 I32 result = my_stat();
a0d0e21e
LW		 3214 SPAGAIN;
3215 if (result < 0)
3216 RETPUSHUNDEF;
3280af22 3217 if (PL_statcache.st_mode & S_ISVTX)
a0d0e21e
LW		 3218 RETPUSHYES;
3219#endif
3220 RETPUSHNO;
3221}
3222
3223PP(pp_fttty)
3224{
39644a26 3225 dSP;
a0d0e21e
LW		 3226 int fd;
3227 GV *gv;
fb73857a 3228 char *tmps = Nullch;
2d8e6c8d 3229 STRLEN n_a;
fb73857a 3230
533c011a 3231 if (PL_op->op_flags & OPf_REF)
146174a9 3232 gv = cGVOP_gv;
fb73857a 3233 else if (isGV(TOPs))
3234 gv = (GV*)POPs;
3235 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3236 gv = (GV*)SvRV(POPs);
a0d0e21e 3237 else
2d8e6c8d 3238 gv = gv_fetchpv(tmps = POPpx, FALSE, SVt_PVIO);
fb73857a 3239
a0d0e21e 3240 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3241 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
fb73857a 3242 else if (tmps && isDIGIT(*tmps))
a0d0e21e
LW		 3243 fd = atoi(tmps);
3244 else
3245 RETPUSHUNDEF;
6ad3d225 3246 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3247 RETPUSHYES;
3248 RETPUSHNO;
3249}
3250
16d20bd9
AD		 3251#if defined(atarist) /* this will work with atariST. Configure will
3252 make guesses for other systems. */
3253# define FILE_base(f) ((f)->_base)
3254# define FILE_ptr(f) ((f)->_ptr)
3255# define FILE_cnt(f) ((f)->_cnt)
3256# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3257#endif
3258
3259PP(pp_fttext)
3260{
39644a26 3261 dSP;
a0d0e21e
LW		 3262 I32 i;
3263 I32 len;
3264 I32 odd = 0;
3265 STDCHAR tbuf[512];
3266 register STDCHAR *s;
3267 register IO *io;
5f05dabc 3268 register SV *sv;
3269 GV *gv;
2d8e6c8d 3270 STRLEN n_a;
146174a9 3271 PerlIO *fp;
a0d0e21e 3272
533c011a 3273 if (PL_op->op_flags & OPf_REF)
146174a9 3274 gv = cGVOP_gv;
5f05dabc 3275 else if (isGV(TOPs))
3276 gv = (GV*)POPs;
3277 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3278 gv = (GV*)SvRV(POPs);
3279 else
3280 gv = Nullgv;
3281
3282 if (gv) {
a0d0e21e 3283 EXTEND(SP, 1);
3280af22
NIS		 3284 if (gv == PL_defgv) {
3285 if (PL_statgv)
3286 io = GvIO(PL_statgv);
a0d0e21e 3287 else {
3280af22 3288 sv = PL_statname;
a0d0e21e
LW		 3289 goto really_filename;
3290 }
3291 }
3292 else {
3280af22
NIS		 3293 PL_statgv = gv;
3294 PL_laststatval = -1;
3295 sv_setpv(PL_statname, "");
3296 io = GvIO(PL_statgv);
a0d0e21e
LW		 3297 }
3298 if (io && IoIFP(io)) {
5f05dabc 3299 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3300 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3301 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3302 if (PL_laststatval < 0)
5f05dabc 3303 RETPUSHUNDEF;
9cbac4c7 3304 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3305 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3306 RETPUSHNO;
3307 else
3308 RETPUSHYES;
9cbac4c7 3309 }
a20bf0c3 3310 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3311 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3312 if (i != EOF)
760ac839 3313 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3314 }
a20bf0c3 3315 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3316 RETPUSHYES;
a20bf0c3
JH		 3317 len = PerlIO_get_bufsiz(IoIFP(io));
3318 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3319 /* sfio can have large buffers - limit to 512 */
3320 if (len > 512)
3321 len = 512;
a0d0e21e
LW		 3322 }
3323 else {
2dd78f96 3324 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3325 gv = cGVOP_gv;
2dd78f96 3326 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3327 }
91487cfc 3328 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 3329 RETPUSHUNDEF;
3330 }
3331 }
3332 else {
3333 sv = POPs;
5f05dabc 3334 really_filename:
3280af22
NIS		 3335 PL_statgv = Nullgv;
3336 PL_laststatval = -1;
5c9aa243 3337 PL_laststype = OP_STAT;
2d8e6c8d 3338 sv_setpv(PL_statname, SvPV(sv, n_a));
146174a9 3339 if (!(fp = PerlIO_open(SvPVX(PL_statname), "r"))) {
2d8e6c8d 3340 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
9014280d 3341 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
a0d0e21e
LW		 3342 RETPUSHUNDEF;
3343 }
146174a9
CB		 3344 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3345 if (PL_laststatval < 0) {
3346 (void)PerlIO_close(fp);
5f05dabc 3347 RETPUSHUNDEF;
146174a9 3348 }
60382766 3349 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
146174a9
CB		 3350 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3351 (void)PerlIO_close(fp);
a0d0e21e 3352 if (len <= 0) {
533c011a 3353 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3354 RETPUSHNO; /* special case NFS directories */
3355 RETPUSHYES; /* null file is anything */
3356 }
3357 s = tbuf;
3358 }
3359
3360 /* now scan s to look for textiness */
4633a7c4 3361 /* XXX ASCII dependent code */
a0d0e21e 3362
146174a9
CB		 3363#if defined(DOSISH) || defined(USEMYBINMODE)
3364 /* ignore trailing ^Z on short files */
3365 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3366 --len;
3367#endif
3368
a0d0e21e
LW		 3369 for (i = 0; i < len; i++, s++) {
3370 if (!*s) { /* null never allowed in text */
3371 odd += len;
3372 break;
3373 }
9d116dd7 3374#ifdef EBCDIC
301e8125 3375 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3376 odd++;
3377#else
146174a9
CB		 3378 else if (*s & 128) {
3379#ifdef USE_LOCALE
2de3dbcc 3380 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3381 continue;
3382#endif
3383 /* utf8 characters don't count as odd */
fd400ab9 3384 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3385 int ulen = UTF8SKIP(s);
3386 if (ulen < len - i) {
3387 int j;
3388 for (j = 1; j < ulen; j++) {
fd400ab9 3389 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3390 goto not_utf8;
3391 }
3392 --ulen; /* loop does extra increment */
3393 s += ulen;
3394 i += ulen;
3395 continue;
3396 }
3397 }
3398 not_utf8:
3399 odd++;
146174a9 3400 }
a0d0e21e
LW		 3401 else if (*s < 32 &&
3402 *s != '\n' && *s != '\r' && *s != '\b' &&
3403 *s != '\t' && *s != '\f' && *s != 27)
3404 odd++;
9d116dd7 3405#endif
a0d0e21e
LW		 3406 }
3407
533c011a 3408 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3409 RETPUSHNO;
3410 else
3411 RETPUSHYES;
3412}
3413
3414PP(pp_ftbinary)
3415{
cea2e8a9 3416 return pp_fttext();
a0d0e21e
LW		 3417}
3418
3419/* File calls. */
3420
3421PP(pp_chdir)
3422{
39644a26 3423 dSP; dTARGET;
a0d0e21e
LW		 3424 char *tmps;
3425 SV **svp;
2d8e6c8d 3426 STRLEN n_a;
a0d0e21e 3427
35ae6b54
MS		 3428 if( MAXARG == 1 )
3429 tmps = POPpx;
3430 else
3431 tmps = 0;
3432
3433 if( !tmps || !*tmps ) {
3434 if ( (svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE))
3435 || (svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE))
491527d0 3436#ifdef VMS
35ae6b54 3437 || (svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE))
491527d0 3438#endif
35ae6b54
MS		 3439 )
3440 {
3441 if( MAXARG == 1 )
9014280d 3442 deprecate("chdir('') or chdir(undef) as chdir()");
35ae6b54
MS		 3443 tmps = SvPV(*svp, n_a);
3444 }
72f496dc 3445 else {
389ec635 3446 PUSHi(0);
b7ab37f8 3447 TAINT_PROPER("chdir");
389ec635
MS		 3448 RETURN;
3449 }
8ea155d1 3450 }
8ea155d1 3451
a0d0e21e 3452 TAINT_PROPER("chdir");
6ad3d225 3453 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3454#ifdef VMS
3455 /* Clear the DEFAULT element of ENV so we'll get the new value
3456 * in the future. */
6b88bc9c 3457 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3458#endif
a0d0e21e
LW		 3459 RETURN;
3460}
3461
3462PP(pp_chown)
3463{
a0d0e21e 3464#ifdef HAS_CHOWN
76ffd3b9
IZ		 3465 dSP; dMARK; dTARGET;
3466 I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3467
a0d0e21e
LW		 3468 SP = MARK;
3469 PUSHi(value);
3470 RETURN;
3471#else
0322a713 3472 DIE(aTHX_ PL_no_func, "chown");
a0d0e21e
LW		 3473#endif
3474}
3475
3476PP(pp_chroot)
3477{
a0d0e21e 3478#ifdef HAS_CHROOT
76ffd3b9 3479 dSP; dTARGET;
2d8e6c8d 3480 STRLEN n_a;
d05c1ba0 3481 char *tmps = POPpx;
a0d0e21e
LW		 3482 TAINT_PROPER("chroot");
3483 PUSHi( chroot(tmps) >= 0 );
3484 RETURN;
3485#else
cea2e8a9 3486 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3487#endif
3488}
3489
3490PP(pp_unlink)
3491{
39644a26 3492 dSP; dMARK; dTARGET;
a0d0e21e 3493 I32 value;
533c011a 3494 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3495 SP = MARK;
3496 PUSHi(value);
3497 RETURN;
3498}
3499
3500PP(pp_chmod)
3501{
39644a26 3502 dSP; dMARK; dTARGET;
a0d0e21e 3503 I32 value;
533c011a 3504 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3505 SP = MARK;
3506 PUSHi(value);
3507 RETURN;
3508}
3509
3510PP(pp_utime)
3511{
39644a26 3512 dSP; dMARK; dTARGET;
a0d0e21e 3513 I32 value;
533c011a 3514 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3515 SP = MARK;
3516 PUSHi(value);
3517 RETURN;
3518}
3519
3520PP(pp_rename)
3521{
39644a26 3522 dSP; dTARGET;
a0d0e21e 3523 int anum;
2d8e6c8d 3524 STRLEN n_a;