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Plugs a memory leak on destruction of regular expressions
[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW		 1/* pp_sys.c
2 *
bc89e66f 3 * Copyright (c) 1991-2001, 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
20ce7b12 83 struct passwd *getpwent (void);
28e8609d 84# endif
a0d0e21e
LW		 85#endif
86
87#ifdef HAS_GROUP
88# ifdef I_GRP
89# include <grp.h>
90# else
20ce7b12
GS		 91 struct group *getgrnam (char *);
92 struct group *getgrgid (Gid_t);
a0d0e21e 93# endif
28e8609d 94# ifdef HAS_GETGRENT
20ce7b12 95 struct group *getgrent (void);
28e8609d 96# endif
a0d0e21e
LW		 97#endif
98
99#ifdef I_UTIME
3730b96e 100# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 101# include <sys/utime.h>
102# else
103# include <utime.h>
104# endif
a0d0e21e 105#endif
a0d0e21e 106
cbdc8872 107#ifdef HAS_CHSIZE
cd52b7b2 108# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
109# undef my_chsize
110# endif
6ad3d225 111# define my_chsize PerlLIO_chsize
cbdc8872 112#endif
113
ff68c719 114#ifdef HAS_FLOCK
115# define FLOCK flock
116#else /* no flock() */
117
36477c24 118 /* fcntl.h might not have been included, even if it exists, because
119 the current Configure only sets I_FCNTL if it's needed to pick up
120 the *_OK constants. Make sure it has been included before testing
121 the fcntl() locking constants. */
122# if defined(HAS_FCNTL) && !defined(I_FCNTL)
123# include <fcntl.h>
124# endif
125
9d9004a9 126# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 127# define FLOCK fcntl_emulate_flock
128# define FCNTL_EMULATE_FLOCK
129# else /* no flock() or fcntl(F_SETLK,...) */
130# ifdef HAS_LOCKF
131# define FLOCK lockf_emulate_flock
132# define LOCKF_EMULATE_FLOCK
133# endif /* lockf */
134# endif /* no flock() or fcntl(F_SETLK,...) */
135
136# ifdef FLOCK
20ce7b12 137 static int FLOCK (int, int);
ff68c719 138
139 /*
140 * These are the flock() constants. Since this sytems doesn't have
141 * flock(), the values of the constants are probably not available.
142 */
143# ifndef LOCK_SH
144# define LOCK_SH 1
145# endif
146# ifndef LOCK_EX
147# define LOCK_EX 2
148# endif
149# ifndef LOCK_NB
150# define LOCK_NB 4
151# endif
152# ifndef LOCK_UN
153# define LOCK_UN 8
154# endif
155# endif /* emulating flock() */
156
157#endif /* no flock() */
55497cff 158
85ab1d1d
JH		 159#define ZBTLEN 10
160static char zero_but_true[ZBTLEN + 1] = "0 but true";
161
5ff3f7a4
GS		 162#if defined(I_SYS_ACCESS) && !defined(R_OK)
163# include <sys/access.h>
164#endif
165
c529f79d
CB		 166#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
167# define FD_CLOEXEC 1 /* NeXT needs this */
168#endif
169
5ff3f7a4
GS		 170#undef PERL_EFF_ACCESS_R_OK /* EFFective uid/gid ACCESS R_OK */
171#undef PERL_EFF_ACCESS_W_OK
172#undef PERL_EFF_ACCESS_X_OK
173
174/* F_OK unused: if stat() cannot find it... */
175
176#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 177 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
5ff3f7a4
GS		 178# define PERL_EFF_ACCESS_R_OK(p) (access((p), R_OK | EFF_ONLY_OK))
179# define PERL_EFF_ACCESS_W_OK(p) (access((p), W_OK | EFF_ONLY_OK))
180# define PERL_EFF_ACCESS_X_OK(p) (access((p), X_OK | EFF_ONLY_OK))
181#endif
182
183#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_EACCESS)
3813c136 184# ifdef I_SYS_SECURITY
5ff3f7a4
GS		 185# include <sys/security.h>
186# endif
c955f117
JH		 187# ifdef ACC_SELF
188 /* HP SecureWare */
189# define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK, ACC_SELF))
190# define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK, ACC_SELF))
191# define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK, ACC_SELF))
192# else
193 /* SCO */
194# define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK))
195# define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK))
196# define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK))
197# endif
5ff3f7a4
GS		 198#endif
199
200#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 201 /* AIX */
5ff3f7a4
GS		 202# define PERL_EFF_ACCESS_R_OK(p) (accessx((p), R_OK, ACC_SELF))
203# define PERL_EFF_ACCESS_W_OK(p) (accessx((p), W_OK, ACC_SELF))
204# define PERL_EFF_ACCESS_X_OK(p) (accessx((p), X_OK, ACC_SELF))
205#endif
206
327c3667
GS		 207#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) \
208 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
209 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 210/* The Hard Way. */
327c3667 211STATIC int
7f4774ae 212S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 213{
5ff3f7a4
GS		 214 Uid_t ruid = getuid();
215 Uid_t euid = geteuid();
216 Gid_t rgid = getgid();
217 Gid_t egid = getegid();
218 int res;
219
146174a9 220 LOCK_CRED_MUTEX;
5ff3f7a4 221#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 222 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 223#else
224#ifdef HAS_SETREUID
225 if (setreuid(euid, ruid))
226#else
227#ifdef HAS_SETRESUID
228 if (setresuid(euid, ruid, (Uid_t)-1))
229#endif
230#endif
cea2e8a9 231 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 232#endif
233
234#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 235 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS		 236#else
237#ifdef HAS_SETREGID
238 if (setregid(egid, rgid))
239#else
240#ifdef HAS_SETRESGID
241 if (setresgid(egid, rgid, (Gid_t)-1))
242#endif
243#endif
cea2e8a9 244 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 245#endif
246
247 res = access(path, mode);
248
249#ifdef HAS_SETREUID
250 if (setreuid(ruid, euid))
251#else
252#ifdef HAS_SETRESUID
253 if (setresuid(ruid, euid, (Uid_t)-1))
254#endif
255#endif
cea2e8a9 256 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 257
258#ifdef HAS_SETREGID
259 if (setregid(rgid, egid))
260#else
261#ifdef HAS_SETRESGID
262 if (setresgid(rgid, egid, (Gid_t)-1))
263#endif
264#endif
cea2e8a9 265 Perl_croak(aTHX_ "leaving effective gid failed");
146174a9 266 UNLOCK_CRED_MUTEX;
5ff3f7a4
GS		 267
268 return res;
269}
270# define PERL_EFF_ACCESS_R_OK(p) (emulate_eaccess((p), R_OK))
271# define PERL_EFF_ACCESS_W_OK(p) (emulate_eaccess((p), W_OK))
272# define PERL_EFF_ACCESS_X_OK(p) (emulate_eaccess((p), X_OK))
273#endif
274
275#if !defined(PERL_EFF_ACCESS_R_OK)
76ffd3b9
IZ		 276/* With it or without it: anyway you get a warning: either that
277 it is unused, or it is declared static and never defined.
278 */
327c3667 279STATIC int
7f4774ae 280S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 281{
cea2e8a9 282 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 283 /*NOTREACHED*/
284 return -1;
285}
286#endif
287
a0d0e21e
LW		 288PP(pp_backtick)
289{
39644a26 290 dSP; dTARGET;
760ac839 291 PerlIO *fp;
2d8e6c8d
GS		 292 STRLEN n_a;
293 char *tmps = POPpx;
54310121 294 I32 gimme = GIMME_V;
16fe6d59 295 char *mode = "r";
54310121 296
a0d0e21e 297 TAINT_PROPER("``");
16fe6d59
GS		 298 if (PL_op->op_private & OPpOPEN_IN_RAW)
299 mode = "rb";
300 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
301 mode = "rt";
302 fp = PerlProc_popen(tmps, mode);
a0d0e21e 303 if (fp) {
ac27b0f5
NIS		 304 char *type = NULL;
305 if (PL_curcop->cop_io) {
306 type = SvPV_nolen(PL_curcop->cop_io);
307 }
ac27b0f5
NIS		 308 if (type && *type)
309 PerlIO_apply_layers(aTHX_ fp,mode,type);
310
54310121 311 if (gimme == G_VOID) {
96827780
MB		 312 char tmpbuf[256];
313 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
54310121 314 /*SUPPRESS 530*/
315 ;
316 }
317 else if (gimme == G_SCALAR) {
aa689395 318 sv_setpv(TARG, ""); /* note that this preserves previous buffer */
a0d0e21e
LW		 319 while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
320 /*SUPPRESS 530*/
321 ;
322 XPUSHs(TARG);
aa689395 323 SvTAINTED_on(TARG);
a0d0e21e
LW		 324 }
325 else {
326 SV *sv;
327
328 for (;;) {
8d6dde3e 329 sv = NEWSV(56, 79);
a0d0e21e
LW		 330 if (sv_gets(sv, fp, 0) == Nullch) {
331 SvREFCNT_dec(sv);
332 break;
333 }
334 XPUSHs(sv_2mortal(sv));
335 if (SvLEN(sv) - SvCUR(sv) > 20) {
336 SvLEN_set(sv, SvCUR(sv)+1);
337 Renew(SvPVX(sv), SvLEN(sv), char);
338 }
aa689395 339 SvTAINTED_on(sv);
a0d0e21e
LW		 340 }
341 }
6ad3d225 342 STATUS_NATIVE_SET(PerlProc_pclose(fp));
aa689395 343 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 344 }
345 else {
f86702cc 346 STATUS_NATIVE_SET(-1);
54310121 347 if (gimme == G_SCALAR)
a0d0e21e
LW		 348 RETPUSHUNDEF;
349 }
350
351 RETURN;
352}
353
354PP(pp_glob)
355{
356 OP *result;
f5284f61
IZ		 357 tryAMAGICunTARGET(iter, -1);
358
71686f12
GS		 359 /* Note that we only ever get here if File::Glob fails to load
360 * without at the same time croaking, for some reason, or if
361 * perl was built with PERL_EXTERNAL_GLOB */
362
a0d0e21e 363 ENTER;
a0d0e21e 364
c90c0ff4 365#ifndef VMS
3280af22 366 if (PL_tainting) {
7bac28a0 367 /*
368 * The external globbing program may use things we can't control,
369 * so for security reasons we must assume the worst.
370 */
371 TAINT;
22c35a8c 372 taint_proper(PL_no_security, "glob");
7bac28a0 373 }
c90c0ff4 374#endif /* !VMS */
7bac28a0 375
3280af22
NIS		 376 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
377 PL_last_in_gv = (GV*)*PL_stack_sp--;
a0d0e21e 378
3280af22 379 SAVESPTR(PL_rs); /* This is not permanent, either. */
79cb57f6 380 PL_rs = sv_2mortal(newSVpvn("\000", 1));
c07a80fd 381#ifndef DOSISH
382#ifndef CSH
6b88bc9c 383 *SvPVX(PL_rs) = '\n';
a0d0e21e 384#endif /* !CSH */
55497cff 385#endif /* !DOSISH */
c07a80fd 386
a0d0e21e
LW		 387 result = do_readline();
388 LEAVE;
389 return result;
390}
391
a0d0e21e
LW		 392PP(pp_rcatline)
393{
146174a9 394 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 395 return do_readline();
396}
397
398PP(pp_warn)
399{
39644a26 400 dSP; dMARK;
06bf62c7 401 SV *tmpsv;
a0d0e21e 402 char *tmps;
06bf62c7 403 STRLEN len;
a0d0e21e
LW		 404 if (SP - MARK != 1) {
405 dTARGET;
3280af22 406 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 407 tmpsv = TARG;
a0d0e21e
LW		 408 SP = MARK + 1;
409 }
410 else {
06bf62c7 411 tmpsv = TOPs;
a0d0e21e 412 }
06bf62c7
GS		 413 tmps = SvPV(tmpsv, len);
414 if (!tmps || !len) {
4e6ea2c3
GS		 415 SV *error = ERRSV;
416 (void)SvUPGRADE(error, SVt_PV);
417 if (SvPOK(error) && SvCUR(error))
418 sv_catpv(error, "\t...caught");
06bf62c7
GS		 419 tmpsv = error;
420 tmps = SvPV(tmpsv, len);
a0d0e21e 421 }
06bf62c7
GS		 422 if (!tmps || !len)
423 tmpsv = sv_2mortal(newSVpvn("Warning: something's wrong", 26));
424
cb50131a 425 Perl_warn(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 426 RETSETYES;
427}
428
429PP(pp_die)
430{
39644a26 431 dSP; dMARK;
a0d0e21e 432 char *tmps;
06bf62c7
GS		 433 SV *tmpsv;
434 STRLEN len;
435 bool multiarg = 0;
a0d0e21e
LW		 436 if (SP - MARK != 1) {
437 dTARGET;
3280af22 438 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7
GS		 439 tmpsv = TARG;
440 tmps = SvPV(tmpsv, len);
441 multiarg = 1;
a0d0e21e
LW		 442 SP = MARK + 1;
443 }
444 else {
4e6ea2c3 445 tmpsv = TOPs;
bf484eac 446 tmps = (SvROK(tmpsv) && PL_in_eval) ? Nullch : SvPV(tmpsv, len);
a0d0e21e 447 }
06bf62c7 448 if (!tmps || !len) {
4e6ea2c3
GS		 449 SV *error = ERRSV;
450 (void)SvUPGRADE(error, SVt_PV);
06bf62c7
GS		 451 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
452 if (!multiarg)
4e6ea2c3 453 SvSetSV(error,tmpsv);
06bf62c7 454 else if (sv_isobject(error)) {
05423cc9
GS		 455 HV *stash = SvSTASH(SvRV(error));
456 GV *gv = gv_fetchmethod(stash, "PROPAGATE");
457 if (gv) {
146174a9 458 SV *file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
b448e4fe 459 SV *line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
05423cc9
GS		 460 EXTEND(SP, 3);
461 PUSHMARK(SP);
462 PUSHs(error);
463 PUSHs(file);
464 PUSHs(line);
465 PUTBACK;
864dbfa3
GS		 466 call_sv((SV*)GvCV(gv),
467 G_SCALAR|G_EVAL|G_KEEPERR);
3280af22 468 sv_setsv(error,*PL_stack_sp--);
05423cc9
GS		 469 }
470 }
cea2e8a9 471 DIE(aTHX_ Nullch);
4e6ea2c3
GS		 472 }
473 else {
474 if (SvPOK(error) && SvCUR(error))
475 sv_catpv(error, "\t...propagated");
06bf62c7
GS		 476 tmpsv = error;
477 tmps = SvPV(tmpsv, len);
4e6ea2c3 478 }
a0d0e21e 479 }
06bf62c7
GS		 480 if (!tmps || !len)
481 tmpsv = sv_2mortal(newSVpvn("Died", 4));
482
cb50131a 483 DIE(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 484}
485
486/* I/O. */
487
488PP(pp_open)
489{
39644a26 490 dSP;
a567e93b
NIS		 491 dMARK; dORIGMARK;
492 dTARGET;
a0d0e21e
LW		 493 GV *gv;
494 SV *sv;
5b468f54 495 IO *io;
a0d0e21e
LW		 496 char *tmps;
497 STRLEN len;
4592e6ca 498 MAGIC *mg;
a567e93b 499 bool ok;
a0d0e21e 500
a567e93b 501 gv = (GV *)*++MARK;
5f05dabc 502 if (!isGV(gv))
cea2e8a9 503 DIE(aTHX_ PL_no_usym, "filehandle");
5b468f54 504 if ((io = GvIOp(gv)))
36477c24 505 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 506
5b468f54 507 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
a567e93b
NIS		 508 /* Method's args are same as ours ... */
509 /* ... except handle is replaced by the object */
5b468f54 510 *MARK-- = SvTIED_obj((SV*)io, mg);
a567e93b 511 PUSHMARK(MARK);
4592e6ca
NIS		 512 PUTBACK;
513 ENTER;
864dbfa3 514 call_method("OPEN", G_SCALAR);
4592e6ca
NIS		 515 LEAVE;
516 SPAGAIN;
517 RETURN;
518 }
519
a567e93b
NIS		 520 if (MARK < SP) {
521 sv = *++MARK;
522 }
523 else {
524 sv = GvSV(gv);
525 }
526
a0d0e21e 527 tmps = SvPV(sv, len);
a567e93b
NIS		 528 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp, MARK+1, (SP-MARK));
529 SP = ORIGMARK;
530 if (ok)
3280af22
NIS		 531 PUSHi( (I32)PL_forkprocess );
532 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 533 PUSHi(0);
534 else
535 RETPUSHUNDEF;
536 RETURN;
537}
538
539PP(pp_close)
540{
39644a26 541 dSP;
a0d0e21e 542 GV *gv;
5b468f54 543 IO *io;
1d603a67 544 MAGIC *mg;
a0d0e21e
LW		 545
546 if (MAXARG == 0)
3280af22 547 gv = PL_defoutgv;
a0d0e21e
LW		 548 else
549 gv = (GV*)POPs;
1d603a67 550
5b468f54
AMS		 551 if (gv && (io = GvIO(gv))
552 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
553 {
1d603a67 554 PUSHMARK(SP);
5b468f54 555 XPUSHs(SvTIED_obj((SV*)io, mg));
1d603a67
GB		 556 PUTBACK;
557 ENTER;
864dbfa3 558 call_method("CLOSE", G_SCALAR);
1d603a67
GB		 559 LEAVE;
560 SPAGAIN;
561 RETURN;
562 }
a0d0e21e 563 EXTEND(SP, 1);
54310121 564 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 565 RETURN;
566}
567
568PP(pp_pipe_op)
569{
a0d0e21e 570#ifdef HAS_PIPE
9cad6237 571 dSP;
a0d0e21e
LW		 572 GV *rgv;
573 GV *wgv;
574 register IO *rstio;
575 register IO *wstio;
576 int fd[2];
577
578 wgv = (GV*)POPs;
579 rgv = (GV*)POPs;
580
581 if (!rgv || !wgv)
582 goto badexit;
583
4633a7c4 584 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
cea2e8a9 585 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 586 rstio = GvIOn(rgv);
587 wstio = GvIOn(wgv);
588
589 if (IoIFP(rstio))
590 do_close(rgv, FALSE);
591 if (IoIFP(wstio))
592 do_close(wgv, FALSE);
593
6ad3d225 594 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 595 goto badexit;
596
760ac839
LW		 597 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
598 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
a0d0e21e 599 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 600 IoTYPE(rstio) = IoTYPE_RDONLY;
601 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 602
603 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 604 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
6ad3d225 605 else PerlLIO_close(fd[0]);
760ac839 606 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
6ad3d225 607 else PerlLIO_close(fd[1]);
a0d0e21e
LW		 608 goto badexit;
609 }
4771b018
GS		 610#if defined(HAS_FCNTL) && defined(F_SETFD)
611 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
612 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
613#endif
a0d0e21e
LW		 614 RETPUSHYES;
615
616badexit:
617 RETPUSHUNDEF;
618#else
cea2e8a9 619 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 620#endif
621}
622
623PP(pp_fileno)
624{
39644a26 625 dSP; dTARGET;
a0d0e21e
LW		 626 GV *gv;
627 IO *io;
760ac839 628 PerlIO *fp;
4592e6ca
NIS		 629 MAGIC *mg;
630
a0d0e21e
LW		 631 if (MAXARG < 1)
632 RETPUSHUNDEF;
633 gv = (GV*)POPs;
4592e6ca 634
5b468f54
AMS		 635 if (gv && (io = GvIO(gv))
636 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
637 {
4592e6ca 638 PUSHMARK(SP);
5b468f54 639 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 640 PUTBACK;
641 ENTER;
864dbfa3 642 call_method("FILENO", G_SCALAR);
4592e6ca
NIS		 643 LEAVE;
644 SPAGAIN;
645 RETURN;
646 }
647
c289d2f7
JH		 648 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
649 /* Can't do this because people seem to do things like
650 defined(fileno($foo)) to check whether $foo is a valid fh.
651 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
652 report_evil_fh(gv, io, PL_op->op_type);
653 */
a0d0e21e 654 RETPUSHUNDEF;
c289d2f7
JH		 655 }
656
760ac839 657 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 658 RETURN;
659}
660
661PP(pp_umask)
662{
39644a26 663 dSP; dTARGET;
d7e492a4 664#ifdef HAS_UMASK
761237fe 665 Mode_t anum;
a0d0e21e 666
a0d0e21e 667 if (MAXARG < 1) {
6ad3d225
GS		 668 anum = PerlLIO_umask(0);
669 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 670 }
671 else
6ad3d225 672 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 673 TAINT_PROPER("umask");
674 XPUSHi(anum);
675#else
eec2d3df
GS		 676 /* Only DIE if trying to restrict permissions on `user' (self).
677 * Otherwise it's harmless and more useful to just return undef
678 * since 'group' and 'other' concepts probably don't exist here. */
679 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 680 DIE(aTHX_ "umask not implemented");
6b88bc9c 681 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 682#endif
683 RETURN;
684}
685
686PP(pp_binmode)
687{
39644a26 688 dSP;
a0d0e21e
LW		 689 GV *gv;
690 IO *io;
760ac839 691 PerlIO *fp;
4592e6ca 692 MAGIC *mg;
16fe6d59 693 SV *discp = Nullsv;
a0d0e21e
LW		 694
695 if (MAXARG < 1)
696 RETPUSHUNDEF;
60382766 697 if (MAXARG > 1) {
16fe6d59 698 discp = POPs;
60382766 699 }
a0d0e21e 700
301e8125 701 gv = (GV*)POPs;
4592e6ca 702
5b468f54
AMS		 703 if (gv && (io = GvIO(gv))
704 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
705 {
4592e6ca 706 PUSHMARK(SP);
5b468f54 707 XPUSHs(SvTIED_obj((SV*)io, mg));
16fe6d59
GS		 708 if (discp)
709 XPUSHs(discp);
4592e6ca
NIS		 710 PUTBACK;
711 ENTER;
864dbfa3 712 call_method("BINMODE", G_SCALAR);
4592e6ca
NIS		 713 LEAVE;
714 SPAGAIN;
715 RETURN;
716 }
a0d0e21e
LW		 717
718 EXTEND(SP, 1);
50f846a7 719 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7
JH		 720 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
721 report_evil_fh(gv, io, PL_op->op_type);
50f846a7
SC		 722 RETPUSHUNDEF;
723 }
a0d0e21e 724
60382766
NIS		 725 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
726 (discp) ? SvPV_nolen(discp) : Nullch))
a0d0e21e
LW		 727 RETPUSHYES;
728 else
729 RETPUSHUNDEF;
a0d0e21e
LW		 730}
731
732PP(pp_tie)
733{
39644a26 734 dSP;
e336de0d 735 dMARK;
a0d0e21e
LW		 736 SV *varsv;
737 HV* stash;
738 GV *gv;
a0d0e21e 739 SV *sv;
3280af22 740 I32 markoff = MARK - PL_stack_base;
a0d0e21e 741 char *methname;
14befaf4 742 int how = PERL_MAGIC_tied;
e336de0d 743 U32 items;
2d8e6c8d 744 STRLEN n_a;
a0d0e21e 745
e336de0d 746 varsv = *++MARK;
6b05c17a
NIS		 747 switch(SvTYPE(varsv)) {
748 case SVt_PVHV:
749 methname = "TIEHASH";
03c6e78a 750 HvEITER((HV *)varsv) = Null(HE *);
6b05c17a
NIS		 751 break;
752 case SVt_PVAV:
753 methname = "TIEARRAY";
754 break;
755 case SVt_PVGV:
7fb37951
AMS		 756#ifdef GV_UNIQUE_CHECK
757 if (GvUNIQUE((GV*)varsv)) {
758 Perl_croak(aTHX_ "Attempt to tie unique GV");
5bd07a3d
DM		 759 }
760#endif
6b05c17a 761 methname = "TIEHANDLE";
14befaf4 762 how = PERL_MAGIC_tiedscalar;
5b468f54
AMS		 763 /* For tied filehandles, we apply tiedscalar magic to the IO
764 slot of the GP rather than the GV itself. AMS 20010812 */
765 if (!GvIOp(varsv))
766 GvIOp(varsv) = newIO();
767 varsv = (SV *)GvIOp(varsv);
6b05c17a
NIS		 768 break;
769 default:
770 methname = "TIESCALAR";
14befaf4 771 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 772 break;
773 }
e336de0d
GS		 774 items = SP - MARK++;
775 if (sv_isobject(*MARK)) {
6b05c17a 776 ENTER;
e788e7d3 777 PUSHSTACKi(PERLSI_MAGIC);
e336de0d
GS		 778 PUSHMARK(SP);
779 EXTEND(SP,items);
780 while (items--)
781 PUSHs(*MARK++);
782 PUTBACK;
864dbfa3 783 call_method(methname, G_SCALAR);
301e8125 784 }
6b05c17a 785 else {
864dbfa3 786 /* Not clear why we don't call call_method here too.
6b05c17a
NIS		 787 * perhaps to get different error message ?
788 */
e336de0d 789 stash = gv_stashsv(*MARK, FALSE);
6b05c17a 790 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
cea2e8a9 791 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%s\"",
301e8125 792 methname, SvPV(*MARK,n_a));
6b05c17a
NIS		 793 }
794 ENTER;
e788e7d3 795 PUSHSTACKi(PERLSI_MAGIC);
e336de0d
GS		 796 PUSHMARK(SP);
797 EXTEND(SP,items);
798 while (items--)
799 PUSHs(*MARK++);
800 PUTBACK;
864dbfa3 801 call_sv((SV*)GvCV(gv), G_SCALAR);
6b05c17a 802 }
a0d0e21e
LW		 803 SPAGAIN;
804
805 sv = TOPs;
d3acc0f7 806 POPSTACK;
a0d0e21e 807 if (sv_isobject(sv)) {
33c27489 808 sv_unmagic(varsv, how);
ae21d580
JH		 809 /* Croak if a self-tie on an aggregate is attempted. */
810 if (varsv == SvRV(sv) &&
811 (SvTYPE(sv) == SVt_PVAV ||
812 SvTYPE(sv) == SVt_PVHV))
813 Perl_croak(aTHX_
814 "Self-ties of arrays and hashes are not supported");
68a4a7e4 815 sv_magic(varsv, sv, how, Nullch, 0);
a0d0e21e
LW		 816 }
817 LEAVE;
3280af22 818 SP = PL_stack_base + markoff;
a0d0e21e
LW		 819 PUSHs(sv);
820 RETURN;
821}
822
823PP(pp_untie)
824{
39644a26 825 dSP;
5b468f54 826 MAGIC *mg;
33c27489 827 SV *sv = POPs;
14befaf4
DM		 828 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
829 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 830
5b468f54
AMS		 831 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
832 RETPUSHYES;
833
834 if ((mg = SvTIED_mg(sv, how))) {
a29a5827
NIS		 835 SV *obj = SvRV(mg->mg_obj);
836 GV *gv;
837 CV *cv = NULL;
a29a5827
NIS		 838 if ((gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE)) &&
839 isGV(gv) && (cv = GvCV(gv))) {
840 PUSHMARK(SP);
841 XPUSHs(SvTIED_obj((SV*)gv, mg));
301e8125 842 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
a29a5827
NIS		 843 PUTBACK;
844 ENTER;
845 call_sv((SV *)cv, G_VOID);
846 LEAVE;
847 SPAGAIN;
cbdc8872 848 }
301e8125
NIS		 849 else if (ckWARN(WARN_UNTIE)) {
850 if (mg && SvREFCNT(obj) > 1)
851 Perl_warner(aTHX_ WARN_UNTIE,
852 "untie attempted while %"UVuf" inner references still exist",
853 (UV)SvREFCNT(obj) - 1 ) ;
854 }
5b468f54 855 sv_unmagic(sv, how);
cbdc8872 856 }
55497cff 857 RETPUSHYES;
a0d0e21e
LW		 858}
859
c07a80fd 860PP(pp_tied)
861{
39644a26 862 dSP;
5b468f54 863 MAGIC *mg;
33c27489 864 SV *sv = POPs;
14befaf4
DM		 865 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
866 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54
AMS		 867
868 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
869 RETPUSHUNDEF;
c07a80fd 870
155aba94 871 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 872 SV *osv = SvTIED_obj(sv, mg);
873 if (osv == mg->mg_obj)
874 osv = sv_mortalcopy(osv);
875 PUSHs(osv);
876 RETURN;
c07a80fd 877 }
c07a80fd 878 RETPUSHUNDEF;
879}
880
a0d0e21e
LW		 881PP(pp_dbmopen)
882{
39644a26 883 dSP;
a0d0e21e
LW		 884 HV *hv;
885 dPOPPOPssrl;
886 HV* stash;
887 GV *gv;
a0d0e21e
LW		 888 SV *sv;
889
890 hv = (HV*)POPs;
891
3280af22 892 sv = sv_mortalcopy(&PL_sv_no);
a0d0e21e
LW		 893 sv_setpv(sv, "AnyDBM_File");
894 stash = gv_stashsv(sv, FALSE);
8ebc5c01 895 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 896 PUTBACK;
864dbfa3 897 require_pv("AnyDBM_File.pm");
a0d0e21e 898 SPAGAIN;
8ebc5c01 899 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 900 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 901 }
902
57d3b86d 903 ENTER;
924508f0 904 PUSHMARK(SP);
6b05c17a 905
924508f0 906 EXTEND(SP, 5);
a0d0e21e
LW		 907 PUSHs(sv);
908 PUSHs(left);
909 if (SvIV(right))
b448e4fe 910 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
a0d0e21e 911 else
b448e4fe 912 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
a0d0e21e 913 PUSHs(right);
57d3b86d 914 PUTBACK;
864dbfa3 915 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 916 SPAGAIN;
917
918 if (!sv_isobject(TOPs)) {
924508f0
GS		 919 SP--;
920 PUSHMARK(SP);
a0d0e21e
LW		 921 PUSHs(sv);
922 PUSHs(left);
b448e4fe 923 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
a0d0e21e 924 PUSHs(right);
a0d0e21e 925 PUTBACK;
864dbfa3 926 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 927 SPAGAIN;
928 }
929
6b05c17a 930 if (sv_isobject(TOPs)) {
14befaf4
DM		 931 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
932 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, Nullch, 0);
6b05c17a 933 }
a0d0e21e
LW		 934 LEAVE;
935 RETURN;
936}
937
938PP(pp_dbmclose)
939{
cea2e8a9 940 return pp_untie();
a0d0e21e
LW		 941}
942
943PP(pp_sselect)
944{
a0d0e21e 945#ifdef HAS_SELECT
9cad6237 946 dSP; dTARGET;
a0d0e21e
LW		 947 register I32 i;
948 register I32 j;
949 register char *s;
950 register SV *sv;
65202027 951 NV value;
a0d0e21e
LW		 952 I32 maxlen = 0;
953 I32 nfound;
954 struct timeval timebuf;
955 struct timeval *tbuf = &timebuf;
956 I32 growsize;
957 char *fd_sets[4];
2d8e6c8d 958 STRLEN n_a;
a0d0e21e
LW		 959#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
960 I32 masksize;
961 I32 offset;
962 I32 k;
963
964# if BYTEORDER & 0xf0000
965# define ORDERBYTE (0x88888888 - BYTEORDER)
966# else
967# define ORDERBYTE (0x4444 - BYTEORDER)
968# endif
969
970#endif
971
972 SP -= 4;
973 for (i = 1; i <= 3; i++) {
974 if (!SvPOK(SP[i]))
975 continue;
976 j = SvCUR(SP[i]);
977 if (maxlen < j)
978 maxlen = j;
979 }
980
5ff3f7a4 981/* little endians can use vecs directly */
a0d0e21e 982#if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
5ff3f7a4 983# if SELECT_MIN_BITS > 1
f2da832e
JH		 984 /* If SELECT_MIN_BITS is greater than one we most probably will want
985 * to align the sizes with SELECT_MIN_BITS/8 because for example
986 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
f556e5b9 987 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
8f1f23e8 988 * on (sets/tests/clears bits) is 32 bits. */
f2da832e 989 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
5ff3f7a4 990# else
4633a7c4 991 growsize = sizeof(fd_set);
5ff3f7a4
GS		 992# endif
993# else
994# ifdef NFDBITS
a0d0e21e 995
5ff3f7a4
GS		 996# ifndef NBBY
997# define NBBY 8
998# endif
a0d0e21e
LW		 999
1000 masksize = NFDBITS / NBBY;
5ff3f7a4 1001# else
a0d0e21e 1002 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1003# endif
a0d0e21e
LW		 1004 growsize = maxlen + (masksize - (maxlen % masksize));
1005 Zero(&fd_sets[0], 4, char*);
1006#endif
1007
1008 sv = SP[4];
1009 if (SvOK(sv)) {
1010 value = SvNV(sv);
1011 if (value < 0.0)
1012 value = 0.0;
1013 timebuf.tv_sec = (long)value;
65202027 1014 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1015 timebuf.tv_usec = (long)(value * 1000000.0);
1016 }
1017 else
1018 tbuf = Null(struct timeval*);
1019
1020 for (i = 1; i <= 3; i++) {
1021 sv = SP[i];
1022 if (!SvOK(sv)) {
1023 fd_sets[i] = 0;
1024 continue;
1025 }
1026 else if (!SvPOK(sv))
2d8e6c8d 1027 SvPV_force(sv,n_a); /* force string conversion */
a0d0e21e
LW		 1028 j = SvLEN(sv);
1029 if (j < growsize) {
1030 Sv_Grow(sv, growsize);
a0d0e21e 1031 }
c07a80fd 1032 j = SvCUR(sv);
1033 s = SvPVX(sv) + j;
1034 while (++j <= growsize) {
1035 *s++ = '\0';
1036 }
1037
a0d0e21e
LW		 1038#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1039 s = SvPVX(sv);
1040 New(403, fd_sets[i], growsize, char);
1041 for (offset = 0; offset < growsize; offset += masksize) {
1042 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1043 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1044 }
1045#else
1046 fd_sets[i] = SvPVX(sv);
1047#endif
1048 }
1049
6ad3d225 1050 nfound = PerlSock_select(
a0d0e21e
LW		 1051 maxlen * 8,
1052 (Select_fd_set_t) fd_sets[1],
1053 (Select_fd_set_t) fd_sets[2],
1054 (Select_fd_set_t) fd_sets[3],
1055 tbuf);
1056 for (i = 1; i <= 3; i++) {
1057 if (fd_sets[i]) {
1058 sv = SP[i];
1059#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1060 s = SvPVX(sv);
1061 for (offset = 0; offset < growsize; offset += masksize) {
1062 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1063 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1064 }
1065 Safefree(fd_sets[i]);
1066#endif
1067 SvSETMAGIC(sv);
1068 }
1069 }
1070
1071 PUSHi(nfound);
1072 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1073 value = (NV)(timebuf.tv_sec) +
1074 (NV)(timebuf.tv_usec) / 1000000.0;
3280af22 1075 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 1076 sv_setnv(sv, value);
1077 }
1078 RETURN;
1079#else
cea2e8a9 1080 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1081#endif
1082}
1083
4633a7c4 1084void
864dbfa3 1085Perl_setdefout(pTHX_ GV *gv)
4633a7c4
LW		 1086{
1087 if (gv)
1088 (void)SvREFCNT_inc(gv);
3280af22
NIS		 1089 if (PL_defoutgv)
1090 SvREFCNT_dec(PL_defoutgv);
1091 PL_defoutgv = gv;
4633a7c4
LW		 1092}
1093
a0d0e21e
LW		 1094PP(pp_select)
1095{
39644a26 1096 dSP; dTARGET;
4633a7c4
LW		 1097 GV *newdefout, *egv;
1098 HV *hv;
1099
533c011a 1100 newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
4633a7c4 1101
3280af22 1102 egv = GvEGV(PL_defoutgv);
4633a7c4 1103 if (!egv)
3280af22 1104 egv = PL_defoutgv;
4633a7c4
LW		 1105 hv = GvSTASH(egv);
1106 if (! hv)
3280af22 1107 XPUSHs(&PL_sv_undef);
4633a7c4 1108 else {
cbdc8872 1109 GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1110 if (gvp && *gvp == egv) {
f7aaccc2 1111 gv_efullname4(TARG, PL_defoutgv, Nullch, TRUE);
f86702cc 1112 XPUSHTARG;
1113 }
1114 else {
1115 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1116 }
4633a7c4
LW		 1117 }
1118
1119 if (newdefout) {
ded8aa31
GS		 1120 if (!GvIO(newdefout))
1121 gv_IOadd(newdefout);
4633a7c4
LW		 1122 setdefout(newdefout);
1123 }
1124
a0d0e21e
LW		 1125 RETURN;
1126}
1127
1128PP(pp_getc)
1129{
39644a26 1130 dSP; dTARGET;
a0d0e21e 1131 GV *gv;
5b468f54 1132 IO *io;
2ae324a7 1133 MAGIC *mg;
a0d0e21e 1134
32da55ab 1135 if (MAXARG == 0)
3280af22 1136 gv = PL_stdingv;
a0d0e21e
LW		 1137 else
1138 gv = (GV*)POPs;
2ae324a7 1139
5b468f54
AMS		 1140 if (gv && (io = GvIO(gv))
1141 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1142 {
54310121 1143 I32 gimme = GIMME_V;
2ae324a7 1144 PUSHMARK(SP);
5b468f54 1145 XPUSHs(SvTIED_obj((SV*)io, mg));
2ae324a7 1146 PUTBACK;
1147 ENTER;
864dbfa3 1148 call_method("GETC", gimme);
2ae324a7 1149 LEAVE;
1150 SPAGAIN;
54310121 1151 if (gimme == G_SCALAR)
1152 SvSetMagicSV_nosteal(TARG, TOPs);
2ae324a7 1153 RETURN;
1154 }
9bc64814 1155 if (!gv || do_eof(gv)) /* make sure we have fp with something */
a0d0e21e 1156 RETPUSHUNDEF;
bbce6d69 1157 TAINT;
a0d0e21e 1158 sv_setpv(TARG, " ");
9bc64814 1159 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1160 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1161 /* Find out how many bytes the char needs */
1162 Size_t len = UTF8SKIP(SvPVX(TARG));
1163 if (len > 1) {
1164 SvGROW(TARG,len+1);
1165 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1166 SvCUR_set(TARG,1+len);
1167 }
1168 SvUTF8_on(TARG);
1169 }
a0d0e21e
LW		 1170 PUSHTARG;
1171 RETURN;
1172}
1173
1174PP(pp_read)
1175{
cea2e8a9 1176 return pp_sysread();
a0d0e21e
LW		 1177}
1178
76e3520e 1179STATIC OP *
cea2e8a9 1180S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1181{
c09156bb 1182 register PERL_CONTEXT *cx;
54310121 1183 I32 gimme = GIMME_V;
a0d0e21e
LW		 1184 AV* padlist = CvPADLIST(cv);
1185 SV** svp = AvARRAY(padlist);
1186
1187 ENTER;
1188 SAVETMPS;
1189
1190 push_return(retop);
146174a9 1191 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
a0d0e21e 1192 PUSHFORMAT(cx);
146174a9 1193 SAVEVPTR(PL_curpad);
3280af22 1194 PL_curpad = AvARRAY((AV*)svp[1]);
a0d0e21e 1195
4633a7c4 1196 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1197 return CvSTART(cv);
1198}
1199
1200PP(pp_enterwrite)
1201{
39644a26 1202 dSP;
a0d0e21e
LW		 1203 register GV *gv;
1204 register IO *io;
1205 GV *fgv;
1206 CV *cv;
1207
1208 if (MAXARG == 0)
3280af22 1209 gv = PL_defoutgv;
a0d0e21e
LW		 1210 else {
1211 gv = (GV*)POPs;
1212 if (!gv)
3280af22 1213 gv = PL_defoutgv;
a0d0e21e
LW		 1214 }
1215 EXTEND(SP, 1);
1216 io = GvIO(gv);
1217 if (!io) {
1218 RETPUSHNO;
1219 }
1220 if (IoFMT_GV(io))
1221 fgv = IoFMT_GV(io);
1222 else
1223 fgv = gv;
1224
1225 cv = GvFORM(fgv);
a0d0e21e 1226 if (!cv) {
2dd78f96 1227 char *name = NULL;
a0d0e21e 1228 if (fgv) {
748a9306 1229 SV *tmpsv = sv_newmortal();
43693395 1230 gv_efullname4(tmpsv, fgv, Nullch, FALSE);
2dd78f96 1231 name = SvPV_nolen(tmpsv);
a0d0e21e 1232 }
2dd78f96
JH		 1233 if (name && *name)
1234 DIE(aTHX_ "Undefined format \"%s\" called", name);
cea2e8a9 1235 DIE(aTHX_ "Not a format reference");
a0d0e21e 1236 }
44a8e56a 1237 if (CvCLONE(cv))
1238 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1239
44a8e56a 1240 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1241 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1242}
1243
1244PP(pp_leavewrite)
1245{
39644a26 1246 dSP;
a0d0e21e
LW		 1247 GV *gv = cxstack[cxstack_ix].blk_sub.gv;
1248 register IO *io = GvIOp(gv);
760ac839
LW		 1249 PerlIO *ofp = IoOFP(io);
1250 PerlIO *fp;
a0d0e21e
LW		 1251 SV **newsp;
1252 I32 gimme;
c09156bb 1253 register PERL_CONTEXT *cx;
a0d0e21e 1254
760ac839 1255 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1256 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
7ef822cd
JH		 1257 if (!io || !ofp)
1258 goto forget_top;
3280af22
NIS		 1259 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1260 PL_formtarget != PL_toptarget)
a0d0e21e 1261 {
4633a7c4
LW		 1262 GV *fgv;
1263 CV *cv;
a0d0e21e
LW		 1264 if (!IoTOP_GV(io)) {
1265 GV *topgv;
46fc3d4c 1266 SV *topname;
a0d0e21e
LW		 1267
1268 if (!IoTOP_NAME(io)) {
1269 if (!IoFMT_NAME(io))
1270 IoFMT_NAME(io) = savepv(GvNAME(gv));
cea2e8a9 1271 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", IoFMT_NAME(io)));
46fc3d4c 1272 topgv = gv_fetchpv(SvPVX(topname), FALSE, SVt_PVFM);
748a9306 1273 if ((topgv && GvFORM(topgv)) ||
a0d0e21e 1274 !gv_fetchpv("top",FALSE,SVt_PVFM))
46fc3d4c 1275 IoTOP_NAME(io) = savepv(SvPVX(topname));
a0d0e21e
LW		 1276 else
1277 IoTOP_NAME(io) = savepv("top");
1278 }
1279 topgv = gv_fetchpv(IoTOP_NAME(io),FALSE, SVt_PVFM);
1280 if (!topgv || !GvFORM(topgv)) {
1281 IoLINES_LEFT(io) = 100000000;
1282 goto forget_top;
1283 }
1284 IoTOP_GV(io) = topgv;
1285 }
748a9306
LW		 1286 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1287 I32 lines = IoLINES_LEFT(io);
3280af22 1288 char *s = SvPVX(PL_formtarget);
8e07c86e
AD		 1289 if (lines <= 0) /* Yow, header didn't even fit!!! */
1290 goto forget_top;
748a9306
LW		 1291 while (lines-- > 0) {
1292 s = strchr(s, '\n');
1293 if (!s)
1294 break;
1295 s++;
1296 }
1297 if (s) {
d75029d0
NIS		 1298 STRLEN save = SvCUR(PL_formtarget);
1299 SvCUR_set(PL_formtarget, s - SvPVX(PL_formtarget));
1300 do_print(PL_formtarget, ofp);
1301 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1302 sv_chop(PL_formtarget, s);
1303 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1304 }
1305 }
a0d0e21e 1306 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1307 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1308 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1309 IoPAGE(io)++;
3280af22 1310 PL_formtarget = PL_toptarget;
748a9306 1311 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1312 fgv = IoTOP_GV(io);
1313 if (!fgv)
cea2e8a9 1314 DIE(aTHX_ "bad top format reference");
4633a7c4 1315 cv = GvFORM(fgv);
2dd78f96
JH		 1316 {
1317 char *name = NULL;
1318 if (!cv) {
1319 SV *sv = sv_newmortal();
1320 gv_efullname4(sv, fgv, Nullch, FALSE);
1321 name = SvPV_nolen(sv);
1322 }
1323 if (name && *name)
1324 DIE(aTHX_ "Undefined top format \"%s\" called",name);
1325 /* why no:
1326 else
1327 DIE(aTHX_ "Undefined top format called");
1328 ?*/
4633a7c4 1329 }
44a8e56a 1330 if (CvCLONE(cv))
1331 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
533c011a 1332 return doform(cv,gv,PL_op);
a0d0e21e
LW		 1333 }
1334
1335 forget_top:
3280af22 1336 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1337 POPFORMAT(cx);
1338 LEAVE;
1339
1340 fp = IoOFP(io);
1341 if (!fp) {
599cee73 1342 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
cb50131a 1343 if (IoIFP(io)) {
2dd78f96
JH		 1344 /* integrate with report_evil_fh()? */
1345 char *name = NULL;
1346 if (isGV(gv)) {
1347 SV* sv = sv_newmortal();
1348 gv_efullname4(sv, gv, Nullch, FALSE);
1349 name = SvPV_nolen(sv);
1350 }
1351 if (name && *name)
1352 Perl_warner(aTHX_ WARN_IO,
1353 "Filehandle %s opened only for input", name);
1354 else
1355 Perl_warner(aTHX_ WARN_IO,
1356 "Filehandle opened only for input");
cb50131a 1357 }
599cee73 1358 else if (ckWARN(WARN_CLOSED))
bc37a18f 1359 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1360 }
3280af22 1361 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1362 }
1363 else {
3280af22 1364 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1365 if (ckWARN(WARN_IO))
cea2e8a9 1366 Perl_warner(aTHX_ WARN_IO, "page overflow");
a0d0e21e 1367 }
d75029d0 1368 if (!do_print(PL_formtarget, fp))
3280af22 1369 PUSHs(&PL_sv_no);
a0d0e21e 1370 else {
3280af22
NIS		 1371 FmLINES(PL_formtarget) = 0;
1372 SvCUR_set(PL_formtarget, 0);
1373 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1374 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1375 (void)PerlIO_flush(fp);
3280af22 1376 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1377 }
1378 }
9cbac4c7 1379 /* bad_ofp: */
3280af22 1380 PL_formtarget = PL_bodytarget;
a0d0e21e
LW		 1381 PUTBACK;
1382 return pop_return();
1383}
1384
1385PP(pp_prtf)
1386{
39644a26 1387 dSP; dMARK; dORIGMARK;
a0d0e21e
LW		 1388 GV *gv;
1389 IO *io;
760ac839 1390 PerlIO *fp;
26db47c4 1391 SV *sv;
46fc3d4c 1392 MAGIC *mg;
a0d0e21e 1393
533c011a 1394 if (PL_op->op_flags & OPf_STACKED)
a0d0e21e
LW		 1395 gv = (GV*)*++MARK;
1396 else
3280af22 1397 gv = PL_defoutgv;
46fc3d4c 1398
5b468f54
AMS		 1399 if (gv && (io = GvIO(gv))
1400 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1401 {
46fc3d4c 1402 if (MARK == ORIGMARK) {
4352c267 1403 MEXTEND(SP, 1);
46fc3d4c 1404 ++MARK;
1405 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1406 ++SP;
1407 }
1408 PUSHMARK(MARK - 1);
5b468f54 1409 *MARK = SvTIED_obj((SV*)io, mg);
46fc3d4c 1410 PUTBACK;
1411 ENTER;
864dbfa3 1412 call_method("PRINTF", G_SCALAR);
46fc3d4c 1413 LEAVE;
1414 SPAGAIN;
1415 MARK = ORIGMARK + 1;
1416 *MARK = *SP;
1417 SP = MARK;
1418 RETURN;
1419 }
1420
26db47c4 1421 sv = NEWSV(0,0);
a0d0e21e 1422 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1423 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1424 report_evil_fh(gv, io, PL_op->op_type);
748a9306 1425 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 1426 goto just_say_no;
1427 }
1428 else if (!(fp = IoOFP(io))) {
599cee73 1429 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
2dd78f96 1430 /* integrate with report_evil_fh()? */
cb50131a 1431 if (IoIFP(io)) {
2dd78f96
JH		 1432 char *name = NULL;
1433 if (isGV(gv)) {
1434 gv_efullname4(sv, gv, Nullch, FALSE);
1435 name = SvPV_nolen(sv);
1436 }
1437 if (name && *name)
1438 Perl_warner(aTHX_ WARN_IO,
1439 "Filehandle %s opened only for input", name);
1440 else
1441 Perl_warner(aTHX_ WARN_IO,
1442 "Filehandle opened only for input");
cb50131a 1443 }
599cee73 1444 else if (ckWARN(WARN_CLOSED))
bc37a18f 1445 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1446 }
748a9306 1447 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
a0d0e21e
LW		 1448 goto just_say_no;
1449 }
1450 else {
1451 do_sprintf(sv, SP - MARK, MARK + 1);
1452 if (!do_print(sv, fp))
1453 goto just_say_no;
1454
1455 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1456 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1457 goto just_say_no;
1458 }
1459 SvREFCNT_dec(sv);
1460 SP = ORIGMARK;
3280af22 1461 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1462 RETURN;
1463
1464 just_say_no:
1465 SvREFCNT_dec(sv);
1466 SP = ORIGMARK;
3280af22 1467 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1468 RETURN;
1469}
1470
c07a80fd 1471PP(pp_sysopen)
1472{
39644a26 1473 dSP;
c07a80fd 1474 GV *gv;
c07a80fd 1475 SV *sv;
1476 char *tmps;
1477 STRLEN len;
1478 int mode, perm;
1479
1480 if (MAXARG > 3)
1481 perm = POPi;
1482 else
1483 perm = 0666;
1484 mode = POPi;
1485 sv = POPs;
1486 gv = (GV *)POPs;
1487
4592e6ca
NIS		 1488 /* Need TIEHANDLE method ? */
1489
c07a80fd 1490 tmps = SvPV(sv, len);
1491 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1492 IoLINES(GvIOp(gv)) = 0;
3280af22 1493 PUSHs(&PL_sv_yes);
c07a80fd 1494 }
1495 else {
3280af22 1496 PUSHs(&PL_sv_undef);
c07a80fd 1497 }
1498 RETURN;
1499}
1500
a0d0e21e
LW		 1501PP(pp_sysread)
1502{
39644a26 1503 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1504 int offset;
1505 GV *gv;
1506 IO *io;
1507 char *buffer;
5b54f415 1508 SSize_t length;
eb5c063a 1509 SSize_t count;
1e422769 1510 Sock_size_t bufsize;
748a9306 1511 SV *bufsv;
a0d0e21e 1512 STRLEN blen;
2ae324a7 1513 MAGIC *mg;
eb5c063a
NIS		 1514 int fp_utf8;
1515 Size_t got = 0;
1516 Size_t wanted;
a0d0e21e
LW		 1517
1518 gv = (GV*)*++MARK;
5b468f54
AMS		 1519 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1520 && gv && (io = GvIO(gv))
1521 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
137443ea 1522 {
2ae324a7 1523 SV *sv;
1524
1525 PUSHMARK(MARK-1);
5b468f54 1526 *MARK = SvTIED_obj((SV*)io, mg);
2ae324a7 1527 ENTER;
864dbfa3 1528 call_method("READ", G_SCALAR);
2ae324a7 1529 LEAVE;
1530 SPAGAIN;
1531 sv = POPs;
1532 SP = ORIGMARK;
1533 PUSHs(sv);
1534 RETURN;
1535 }
1536
a0d0e21e
LW		 1537 if (!gv)
1538 goto say_undef;
748a9306 1539 bufsv = *++MARK;
ff68c719 1540 if (! SvOK(bufsv))
1541 sv_setpvn(bufsv, "", 0);
a0d0e21e 1542 length = SvIVx(*++MARK);
748a9306 1543 SETERRNO(0,0);
a0d0e21e
LW		 1544 if (MARK < SP)
1545 offset = SvIVx(*++MARK);
1546 else
1547 offset = 0;
1548 io = GvIO(gv);
1549 if (!io || !IoIFP(io))
1550 goto say_undef;
0064a8a9 1551 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1552 buffer = SvPVutf8_force(bufsv, blen);
eb5c063a
NIS		 1553 /* UTF8 may not have been set if they are all low bytes */
1554 SvUTF8_on(bufsv);
7d59b7e4
NIS		 1555 }
1556 else {
1557 buffer = SvPV_force(bufsv, blen);
1558 }
1559 if (length < 0)
1560 DIE(aTHX_ "Negative length");
eb5c063a 1561 wanted = length;
7d59b7e4 1562
a0d0e21e 1563#ifdef HAS_SOCKET
533c011a 1564 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1565 char namebuf[MAXPATHLEN];
eec2d3df 1566#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE)
490ab354
JH		 1567 bufsize = sizeof (struct sockaddr_in);
1568#else
46fc3d4c 1569 bufsize = sizeof namebuf;
490ab354 1570#endif
abf95952
IZ		 1571#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1572 if (bufsize >= 256)
1573 bufsize = 255;
1574#endif
748a9306 1575 buffer = SvGROW(bufsv, length+1);
bbce6d69 1576 /* 'offset' means 'flags' here */
eb5c063a 1577 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
46fc3d4c 1578 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1579 if (count < 0)
a0d0e21e 1580 RETPUSHUNDEF;
4107cc59
OF		 1581#ifdef EPOC
1582 /* Bogus return without padding */
1583 bufsize = sizeof (struct sockaddr_in);
1584#endif
eb5c063a 1585 SvCUR_set(bufsv, count);
748a9306
LW		 1586 *SvEND(bufsv) = '\0';
1587 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1588 if (fp_utf8)
1589 SvUTF8_on(bufsv);
748a9306 1590 SvSETMAGIC(bufsv);
aac0dd9a 1591 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1592 if (!(IoFLAGS(io) & IOf_UNTAINT))
1593 SvTAINTED_on(bufsv);
a0d0e21e 1594 SP = ORIGMARK;
46fc3d4c 1595 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1596 PUSHs(TARG);
1597 RETURN;
1598 }
1599#else
911d147d 1600 if (PL_op->op_type == OP_RECV)
cea2e8a9 1601 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1602#endif
eb5c063a
NIS		 1603 if (DO_UTF8(bufsv)) {
1604 /* offset adjust in characters not bytes */
1605 blen = sv_len_utf8(bufsv);
7d59b7e4 1606 }
bbce6d69 1607 if (offset < 0) {
1608 if (-offset > blen)
cea2e8a9 1609 DIE(aTHX_ "Offset outside string");
bbce6d69 1610 offset += blen;
1611 }
eb5c063a
NIS		 1612 if (DO_UTF8(bufsv)) {
1613 /* convert offset-as-chars to offset-as-bytes */
1614 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1615 }
1616 more_bytes:
cd52b7b2 1617 bufsize = SvCUR(bufsv);
eb5c063a 1618 buffer = SvGROW(bufsv, length+offset+1);
cd52b7b2 1619 if (offset > bufsize) { /* Zero any newly allocated space */
1620 Zero(buffer+bufsize, offset-bufsize, char);
1621 }
eb5c063a
NIS		 1622 buffer = buffer + offset;
1623
533c011a 1624 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1625#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1626 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1627 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1628 buffer, length, 0);
a7092146
GS		 1629 }
1630 else
1631#endif
1632 {
eb5c063a
NIS		 1633 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1634 buffer, length);
a7092146 1635 }
a0d0e21e
LW		 1636 }
1637 else
1638#ifdef HAS_SOCKET__bad_code_maybe
50952442 1639 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1640 char namebuf[MAXPATHLEN];
490ab354
JH		 1641#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1642 bufsize = sizeof (struct sockaddr_in);
1643#else
46fc3d4c 1644 bufsize = sizeof namebuf;
490ab354 1645#endif
eb5c063a 1646 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1647 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1648 }
1649 else
1650#endif
3b02c43c 1651 {
eb5c063a
NIS		 1652 count = PerlIO_read(IoIFP(io), buffer, length);
1653 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1654 if (count == 0 && PerlIO_error(IoIFP(io)))
1655 count = -1;
3b02c43c 1656 }
eb5c063a 1657 if (count < 0) {
a00b5bd3 1658 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
af8c498a 1659 {
2dd78f96
JH		 1660 /* integrate with report_evil_fh()? */
1661 char *name = NULL;
1662 if (isGV(gv)) {
1663 SV* sv = sv_newmortal();
1664 gv_efullname4(sv, gv, Nullch, FALSE);
1665 name = SvPV_nolen(sv);
1666 }
1667 if (name && *name)
1668 Perl_warner(aTHX_ WARN_IO,
1669 "Filehandle %s opened only for output", name);
1670 else
1671 Perl_warner(aTHX_ WARN_IO,
1672 "Filehandle opened only for output");
af8c498a 1673 }
a0d0e21e 1674 goto say_undef;
af8c498a 1675 }
eb5c063a 1676 SvCUR_set(bufsv, count+(buffer - SvPVX(bufsv)));
748a9306
LW		 1677 *SvEND(bufsv) = '\0';
1678 (void)SvPOK_only(bufsv);
0064a8a9 1679 if (fp_utf8 && !IN_BYTES) {
eb5c063a
NIS		 1680 /* Look at utf8 we got back and count the characters */
1681 char *bend = buffer + count;
1682 while (buffer < bend) {
1683 STRLEN skip = UTF8SKIP(buffer);
1684 if (buffer+skip > bend) {
1685 /* partial character - try for rest of it */
1686 length = skip - (bend-buffer);
1687 offset = bend - SvPVX(bufsv);
1688 goto more_bytes;
1689 }
1690 else {
1691 got++;
1692 buffer += skip;
1693 }
1694 }
1695 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1696 provided amount read (count) was what was requested (length)
1697 */
1698 if (got < wanted && count == length) {
1699 length = (wanted-got);
1700 offset = bend - SvPVX(bufsv);
1701 goto more_bytes;
1702 }
1703 /* return value is character count */
1704 count = got;
1705 SvUTF8_on(bufsv);
1706 }
748a9306 1707 SvSETMAGIC(bufsv);
aac0dd9a 1708 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1709 if (!(IoFLAGS(io) & IOf_UNTAINT))
1710 SvTAINTED_on(bufsv);
a0d0e21e 1711 SP = ORIGMARK;
eb5c063a 1712 PUSHi(count);
a0d0e21e
LW		 1713 RETURN;
1714
1715 say_undef:
1716 SP = ORIGMARK;
1717 RETPUSHUNDEF;
1718}
1719
1720PP(pp_syswrite)
1721{
39644a26 1722 dSP;
092bebab
JH		 1723 int items = (SP - PL_stack_base) - TOPMARK;
1724 if (items == 2) {
9f089d78 1725 SV *sv;
092bebab 1726 EXTEND(SP, 1);
9f089d78
SB		 1727 sv = sv_2mortal(newSViv(sv_len(*SP)));
1728 PUSHs(sv);
092bebab
JH		 1729 PUTBACK;
1730 }
cea2e8a9 1731 return pp_send();
a0d0e21e
LW		 1732}
1733
1734PP(pp_send)
1735{
39644a26 1736 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1737 GV *gv;
1738 IO *io;
748a9306 1739 SV *bufsv;
a0d0e21e 1740 char *buffer;
8c99d73e
GS		 1741 Size_t length;
1742 SSize_t retval;
a0d0e21e 1743 STRLEN blen;
1d603a67 1744 MAGIC *mg;
a0d0e21e
LW		 1745
1746 gv = (GV*)*++MARK;
14befaf4 1747 if (PL_op->op_type == OP_SYSWRITE
5b468f54
AMS		 1748 && gv && (io = GvIO(gv))
1749 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
14befaf4 1750 {
1d603a67
GB		 1751 SV *sv;
1752
1753 PUSHMARK(MARK-1);
5b468f54 1754 *MARK = SvTIED_obj((SV*)io, mg);
1d603a67 1755 ENTER;
864dbfa3 1756 call_method("WRITE", G_SCALAR);
1d603a67
GB		 1757 LEAVE;
1758 SPAGAIN;
1759 sv = POPs;
1760 SP = ORIGMARK;
1761 PUSHs(sv);
1762 RETURN;
1763 }
a0d0e21e
LW		 1764 if (!gv)
1765 goto say_undef;
748a9306 1766 bufsv = *++MARK;
8c99d73e 1767#if Size_t_size > IVSIZE
3c001241 1768 length = (Size_t)SvNVx(*++MARK);
146174a9 1769#else
3c001241 1770 length = (Size_t)SvIVx(*++MARK);
146174a9 1771#endif
3c001241 1772 if ((SSize_t)length < 0)
cea2e8a9 1773 DIE(aTHX_ "Negative length");
748a9306 1774 SETERRNO(0,0);
a0d0e21e
LW		 1775 io = GvIO(gv);
1776 if (!io || !IoIFP(io)) {
8c99d73e 1777 retval = -1;
bc37a18f
RG		 1778 if (ckWARN(WARN_CLOSED))
1779 report_evil_fh(gv, io, PL_op->op_type);
7d59b7e4
NIS		 1780 goto say_undef;
1781 }
1782
1783 if (PerlIO_isutf8(IoIFP(io))) {
1784 buffer = SvPVutf8(bufsv, blen);
a0d0e21e 1785 }
7d59b7e4
NIS		 1786 else {
1787 if (DO_UTF8(bufsv))
1788 sv_utf8_downgrade(bufsv, FALSE);
1789 buffer = SvPV(bufsv, blen);
1790 }
1791
1792 if (PL_op->op_type == OP_SYSWRITE) {
1793 IV offset;
1794 if (DO_UTF8(bufsv)) {
1795 /* length and offset are in chars */
1796 blen = sv_len_utf8(bufsv);
1797 }
bbce6d69 1798 if (MARK < SP) {
a0d0e21e 1799 offset = SvIVx(*++MARK);
bbce6d69 1800 if (offset < 0) {
1801 if (-offset > blen)
cea2e8a9 1802 DIE(aTHX_ "Offset outside string");
bbce6d69 1803 offset += blen;
fb73857a 1804 } else if (offset >= blen && blen > 0)
cea2e8a9 1805 DIE(aTHX_ "Offset outside string");
bbce6d69 1806 } else
a0d0e21e
LW		 1807 offset = 0;
1808 if (length > blen - offset)
1809 length = blen - offset;
7d59b7e4 1810 if (DO_UTF8(bufsv)) {
c8d31a35 1811 buffer = (char*)utf8_hop((U8 *)buffer, offset);
7d59b7e4
NIS		 1812 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1813 }
1814 else {
1815 buffer = buffer+offset;
1816 }
a7092146 1817#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1818 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1819 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1820 buffer, length, 0);
a7092146
GS		 1821 }
1822 else
1823#endif
1824 {
94e4c244 1825 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1826 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1827 buffer, length);
a7092146 1828 }
a0d0e21e
LW		 1829 }
1830#ifdef HAS_SOCKET
1831 else if (SP > MARK) {
1832 char *sockbuf;
1833 STRLEN mlen;
1834 sockbuf = SvPVx(*++MARK, mlen);
7d59b7e4 1835 /* length is really flags */
8c99d73e
GS		 1836 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1837 length, (struct sockaddr *)sockbuf, mlen);
a0d0e21e
LW		 1838 }
1839 else
7d59b7e4 1840 /* length is really flags */
8c99d73e 1841 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
a0d0e21e
LW		 1842#else
1843 else
cea2e8a9 1844 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1845#endif
8c99d73e 1846 if (retval < 0)
a0d0e21e
LW		 1847 goto say_undef;
1848 SP = ORIGMARK;
8c99d73e
GS		 1849#if Size_t_size > IVSIZE
1850 PUSHn(retval);
1851#else
1852 PUSHi(retval);
1853#endif
a0d0e21e
LW		 1854 RETURN;
1855
1856 say_undef:
1857 SP = ORIGMARK;
1858 RETPUSHUNDEF;
1859}
1860
1861PP(pp_recv)
1862{
cea2e8a9 1863 return pp_sysread();
a0d0e21e
LW		 1864}
1865
1866PP(pp_eof)
1867{
39644a26 1868 dSP;
a0d0e21e 1869 GV *gv;
5b468f54 1870 IO *io;
4592e6ca 1871 MAGIC *mg;
a0d0e21e 1872
32da55ab 1873 if (MAXARG == 0) {
146174a9
CB		 1874 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1875 IO *io;
1876 gv = PL_last_in_gv = PL_argvgv;
1877 io = GvIO(gv);
1878 if (io && !IoIFP(io)) {
1879 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1880 IoLINES(io) = 0;
1881 IoFLAGS(io) &= ~IOf_START;
1882 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
1883 sv_setpvn(GvSV(gv), "-", 1);
1884 SvSETMAGIC(GvSV(gv));
1885 }
1886 else if (!nextargv(gv))
1887 RETPUSHYES;
1888 }
1889 }
1890 else
1891 gv = PL_last_in_gv; /* eof */
1892 }
a0d0e21e 1893 else
146174a9 1894 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 1895
5b468f54
AMS		 1896 if (gv && (io = GvIO(gv))
1897 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1898 {
4592e6ca 1899 PUSHMARK(SP);
5b468f54 1900 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1901 PUTBACK;
1902 ENTER;
864dbfa3 1903 call_method("EOF", G_SCALAR);
4592e6ca
NIS		 1904 LEAVE;
1905 SPAGAIN;
1906 RETURN;
1907 }
1908
54310121 1909 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 1910 RETURN;
1911}
1912
1913PP(pp_tell)
1914{
39644a26 1915 dSP; dTARGET;
301e8125 1916 GV *gv;
5b468f54 1917 IO *io;
4592e6ca 1918 MAGIC *mg;
a0d0e21e 1919
32da55ab 1920 if (MAXARG == 0)
3280af22 1921 gv = PL_last_in_gv;
a0d0e21e 1922 else
3280af22 1923 gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 1924
5b468f54
AMS		 1925 if (gv && (io = GvIO(gv))
1926 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1927 {
4592e6ca 1928 PUSHMARK(SP);
5b468f54 1929 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1930 PUTBACK;
1931 ENTER;
864dbfa3 1932 call_method("TELL", G_SCALAR);
4592e6ca
NIS		 1933 LEAVE;
1934 SPAGAIN;
1935 RETURN;
1936 }
1937
146174a9
CB		 1938#if LSEEKSIZE > IVSIZE
1939 PUSHn( do_tell(gv) );
1940#else
a0d0e21e 1941 PUSHi( do_tell(gv) );
146174a9 1942#endif
a0d0e21e
LW		 1943 RETURN;
1944}
1945
1946PP(pp_seek)
1947{
cea2e8a9 1948 return pp_sysseek();
137443ea 1949}
1950
1951PP(pp_sysseek)
1952{
39644a26 1953 dSP;
a0d0e21e 1954 GV *gv;
5b468f54 1955 IO *io;
a0d0e21e 1956 int whence = POPi;
146174a9
CB		 1957#if LSEEKSIZE > IVSIZE
1958 Off_t offset = (Off_t)SvNVx(POPs);
1959#else
d9b3e12d 1960 Off_t offset = (Off_t)SvIVx(POPs);
146174a9 1961#endif
4592e6ca 1962 MAGIC *mg;
a0d0e21e 1963
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));
cb50131a
CB		 1971#if LSEEKSIZE > IVSIZE
1972 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
1973#else
b448e4fe 1974 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 1975#endif
b448e4fe 1976 XPUSHs(sv_2mortal(newSViv(whence)));
4592e6ca
NIS		 1977 PUTBACK;
1978 ENTER;
864dbfa3 1979 call_method("SEEK", G_SCALAR);
4592e6ca
NIS		 1980 LEAVE;
1981 SPAGAIN;
1982 RETURN;
1983 }
1984
533c011a 1985 if (PL_op->op_type == OP_SEEK)
8903cb82 1986 PUSHs(boolSV(do_seek(gv, offset, whence)));
1987 else {
b448e4fe
JH		 1988 Off_t sought = do_sysseek(gv, offset, whence);
1989 if (sought < 0)
146174a9
CB		 1990 PUSHs(&PL_sv_undef);
1991 else {
b448e4fe 1992 SV* sv = sought ?
146174a9 1993#if LSEEKSIZE > IVSIZE
b448e4fe 1994 newSVnv((NV)sought)
146174a9 1995#else
b448e4fe 1996 newSViv(sought)
146174a9
CB		 1997#endif
1998 : newSVpvn(zero_but_true, ZBTLEN);
1999 PUSHs(sv_2mortal(sv));
2000 }
8903cb82 2001 }
a0d0e21e
LW		 2002 RETURN;
2003}
2004
2005PP(pp_truncate)
2006{
39644a26 2007 dSP;
8c99d73e
GS		 2008 /* There seems to be no consensus on the length type of truncate()
2009 * and ftruncate(), both off_t and size_t have supporters. In
2010 * general one would think that when using large files, off_t is
2011 * at least as wide as size_t, so using an off_t should be okay. */
2012 /* XXX Configure probe for the length type of *truncate() needed XXX */
2013 Off_t len;
a0d0e21e 2014
8c99d73e
GS		 2015#if Size_t_size > IVSIZE
2016 len = (Off_t)POPn;
2017#else
2018 len = (Off_t)POPi;
2019#endif
2020 /* Checking for length < 0 is problematic as the type might or
301e8125 2021 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2022 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2023 SETERRNO(0,0);
5d94fbed 2024#if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) || defined(F_FREESP)
d05c1ba0
JH		 2025 {
2026 STRLEN n_a;
2027 int result = 1;
2028 GV *tmpgv;
2029
2030 if (PL_op->op_flags & OPf_SPECIAL) {
2031 tmpgv = gv_fetchpv(POPpx, FALSE, SVt_PVIO);
2032
2033 do_ftruncate:
2034 TAINT_PROPER("truncate");
2035 if (!GvIO(tmpgv) || !IoIFP(GvIOp(tmpgv)))
2036 result = 0;
2037 else {
2038 PerlIO_flush(IoIFP(GvIOp(tmpgv)));
cbdc8872 2039#ifdef HAS_TRUNCATE
d05c1ba0 2040 if (ftruncate(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
301e8125 2041#else
d05c1ba0 2042 if (my_chsize(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
cbdc8872 2043#endif
d05c1ba0
JH		 2044 result = 0;
2045 }
cbdc8872 2046 }
d05c1ba0
JH		 2047 else {
2048 SV *sv = POPs;
2049 char *name;
2050
2051 if (SvTYPE(sv) == SVt_PVGV) {
2052 tmpgv = (GV*)sv; /* *main::FRED for example */
2053 goto do_ftruncate;
2054 }
2055 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2056 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2057 goto do_ftruncate;
2058 }
1e422769 2059
d05c1ba0
JH		 2060 name = SvPV(sv, n_a);
2061 TAINT_PROPER("truncate");
cbdc8872 2062#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2063 if (truncate(name, len) < 0)
2064 result = 0;
cbdc8872 2065#else
d05c1ba0
JH		 2066 {
2067 int tmpfd;
2068
2069 if ((tmpfd = PerlLIO_open(name, O_RDWR)) < 0)
cbdc8872 2070 result = 0;
d05c1ba0
JH		 2071 else {
2072 if (my_chsize(tmpfd, len) < 0)
2073 result = 0;
2074 PerlLIO_close(tmpfd);
2075 }
cbdc8872 2076 }
a0d0e21e 2077#endif
d05c1ba0 2078 }
a0d0e21e 2079
d05c1ba0
JH		 2080 if (result)
2081 RETPUSHYES;
2082 if (!errno)
2083 SETERRNO(EBADF,RMS$_IFI);
2084 RETPUSHUNDEF;
2085 }
a0d0e21e 2086#else
cea2e8a9 2087 DIE(aTHX_ "truncate not implemented");
a0d0e21e
LW		 2088#endif
2089}
2090
2091PP(pp_fcntl)
2092{
cea2e8a9 2093 return pp_ioctl();
a0d0e21e
LW		 2094}
2095
2096PP(pp_ioctl)
2097{
39644a26 2098 dSP; dTARGET;
748a9306 2099 SV *argsv = POPs;
3bb7c1b4 2100 unsigned int func = POPu;
533c011a 2101 int optype = PL_op->op_type;
a0d0e21e 2102 char *s;
324aa91a 2103 IV retval;
a0d0e21e 2104 GV *gv = (GV*)POPs;
c289d2f7 2105 IO *io = gv ? GvIOn(gv) : 0;
a0d0e21e 2106
748a9306 2107 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2108 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2109 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2110 SETERRNO(EBADF,RMS$_IFI); /* well, sort of... */
a0d0e21e
LW		 2111 RETPUSHUNDEF;
2112 }
2113
748a9306 2114 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2115 STRLEN len;
324aa91a 2116 STRLEN need;
748a9306 2117 s = SvPV_force(argsv, len);
324aa91a
HF		 2118 need = IOCPARM_LEN(func);
2119 if (len < need) {
2120 s = Sv_Grow(argsv, need + 1);
2121 SvCUR_set(argsv, need);
a0d0e21e
LW		 2122 }
2123
748a9306 2124 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2125 }
2126 else {
748a9306 2127 retval = SvIV(argsv);
c529f79d 2128 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2129 }
2130
2131 TAINT_PROPER(optype == OP_IOCTL ? "ioctl" : "fcntl");
2132
2133 if (optype == OP_IOCTL)
2134#ifdef HAS_IOCTL
76e3520e 2135 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2136#else
cea2e8a9 2137 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2138#endif
2139 else
55497cff 2140#ifdef HAS_FCNTL
2141#if defined(OS2) && defined(__EMX__)
760ac839 2142 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2143#else
760ac839 2144 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2145#endif
55497cff 2146#else
cea2e8a9 2147 DIE(aTHX_ "fcntl is not implemented");
a0d0e21e
LW		 2148#endif
2149
748a9306
LW		 2150 if (SvPOK(argsv)) {
2151 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2152 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
22c35a8c 2153 PL_op_name[optype]);
748a9306
LW		 2154 s[SvCUR(argsv)] = 0; /* put our null back */
2155 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2156 }
2157
2158 if (retval == -1)
2159 RETPUSHUNDEF;
2160 if (retval != 0) {
2161 PUSHi(retval);
2162 }
2163 else {
8903cb82 2164 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e
LW		 2165 }
2166 RETURN;
2167}
2168
2169PP(pp_flock)
2170{
9cad6237 2171#ifdef FLOCK
39644a26 2172 dSP; dTARGET;
a0d0e21e
LW		 2173 I32 value;
2174 int argtype;
2175 GV *gv;
bc37a18f 2176 IO *io = NULL;
760ac839 2177 PerlIO *fp;
16d20bd9 2178
a0d0e21e 2179 argtype = POPi;
32da55ab 2180 if (MAXARG == 0)
3280af22 2181 gv = PL_last_in_gv;
a0d0e21e
LW		 2182 else
2183 gv = (GV*)POPs;
bc37a18f
RG		 2184 if (gv && (io = GvIO(gv)))
2185 fp = IoIFP(io);
2186 else {
a0d0e21e 2187 fp = Nullfp;
bc37a18f
RG		 2188 io = NULL;
2189 }
a0d0e21e 2190 if (fp) {
68dc0745 2191 (void)PerlIO_flush(fp);
76e3520e 2192 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2193 }
cb50131a 2194 else {
bc37a18f
RG		 2195 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2196 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2197 value = 0;
cb50131a 2198 SETERRNO(EBADF,RMS$_IFI);
cb50131a 2199 }
a0d0e21e
LW		 2200 PUSHi(value);
2201 RETURN;
2202#else
cea2e8a9 2203 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2204#endif
2205}
2206
2207/* Sockets. */
2208
2209PP(pp_socket)
2210{
a0d0e21e 2211#ifdef HAS_SOCKET
9cad6237 2212 dSP;
a0d0e21e
LW		 2213 GV *gv;
2214 register IO *io;
2215 int protocol = POPi;
2216 int type = POPi;
2217 int domain = POPi;
2218 int fd;
2219
2220 gv = (GV*)POPs;
c289d2f7 2221 io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2222
c289d2f7
JH		 2223 if (!gv || !io) {
2224 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2225 report_evil_fh(gv, io, PL_op->op_type);
2226 if (IoIFP(io))
2227 do_close(gv, FALSE);
748a9306 2228 SETERRNO(EBADF,LIB$_INVARG);
a0d0e21e
LW		 2229 RETPUSHUNDEF;
2230 }
2231
57171420
BS		 2232 if (IoIFP(io))
2233 do_close(gv, FALSE);
2234
a0d0e21e 2235 TAINT_PROPER("socket");
6ad3d225 2236 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2237 if (fd < 0)
2238 RETPUSHUNDEF;
760ac839
LW		 2239 IoIFP(io) = PerlIO_fdopen(fd, "r"); /* stdio gets confused about sockets */
2240 IoOFP(io) = PerlIO_fdopen(fd, "w");
50952442 2241 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2242 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2243 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2244 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2245 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2246 RETPUSHUNDEF;
2247 }
8d2a6795
GS		 2248#if defined(HAS_FCNTL) && defined(F_SETFD)
2249 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2250#endif
a0d0e21e 2251
d5ff79b3
OF		 2252#ifdef EPOC
2253 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2254#endif
2255
a0d0e21e
LW		 2256 RETPUSHYES;
2257#else
cea2e8a9 2258 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2259#endif
2260}
2261
2262PP(pp_sockpair)
2263{
a0d0e21e 2264#ifdef HAS_SOCKETPAIR
76ffd3b9 2265 dSP;
a0d0e21e
LW		 2266 GV *gv1;
2267 GV *gv2;
2268 register IO *io1;
2269 register IO *io2;
2270 int protocol = POPi;
2271 int type = POPi;
2272 int domain = POPi;
2273 int fd[2];
2274
2275 gv2 = (GV*)POPs;
2276 gv1 = (GV*)POPs;
c289d2f7
JH		 2277 io1 = gv1 ? GvIOn(gv1) : NULL;
2278 io2 = gv2 ? GvIOn(gv2) : NULL;
2279 if (!gv1 || !gv2 || !io1 || !io2) {
2280 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2281 if (!gv1 || !io1)
2282 report_evil_fh(gv1, io1, PL_op->op_type);
2283 if (!gv2 || !io2)
2284 report_evil_fh(gv1, io2, PL_op->op_type);
2285 }
2286 if (IoIFP(io1))
2287 do_close(gv1, FALSE);
2288 if (IoIFP(io2))
2289 do_close(gv2, FALSE);
a0d0e21e 2290 RETPUSHUNDEF;
c289d2f7 2291 }
a0d0e21e 2292
dc0d0a5f
JH		 2293 if (IoIFP(io1))
2294 do_close(gv1, FALSE);
2295 if (IoIFP(io2))
2296 do_close(gv2, FALSE);
57171420 2297
a0d0e21e 2298 TAINT_PROPER("socketpair");
6ad3d225 2299 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2300 RETPUSHUNDEF;
760ac839
LW		 2301 IoIFP(io1) = PerlIO_fdopen(fd[0], "r");
2302 IoOFP(io1) = PerlIO_fdopen(fd[0], "w");
50952442 2303 IoTYPE(io1) = IoTYPE_SOCKET;
760ac839
LW		 2304 IoIFP(io2) = PerlIO_fdopen(fd[1], "r");
2305 IoOFP(io2) = PerlIO_fdopen(fd[1], "w");
50952442 2306 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2307 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2308 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2309 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2310 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2311 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2312 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2313 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2314 RETPUSHUNDEF;
2315 }
8d2a6795
GS		 2316#if defined(HAS_FCNTL) && defined(F_SETFD)
2317 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2318 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2319#endif
a0d0e21e
LW		 2320
2321 RETPUSHYES;
2322#else
cea2e8a9 2323 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2324#endif
2325}
2326
2327PP(pp_bind)
2328{
a0d0e21e 2329#ifdef HAS_SOCKET
9cad6237 2330 dSP;
eec2d3df 2331#ifdef MPE /* Requires PRIV mode to bind() to ports < 1024 */
82b3da69
JH		 2332 extern void GETPRIVMODE();
2333 extern void GETUSERMODE();
eec2d3df 2334#endif
748a9306 2335 SV *addrsv = POPs;
a0d0e21e
LW		 2336 char *addr;
2337 GV *gv = (GV*)POPs;
2338 register IO *io = GvIOn(gv);
2339 STRLEN len;
eec2d3df
GS		 2340 int bind_ok = 0;
2341#ifdef MPE
2342 int mpeprivmode = 0;
2343#endif
a0d0e21e
LW		 2344
2345 if (!io || !IoIFP(io))
2346 goto nuts;
2347
748a9306 2348 addr = SvPV(addrsv, len);
a0d0e21e 2349 TAINT_PROPER("bind");
eec2d3df
GS		 2350#ifdef MPE /* Deal with MPE bind() peculiarities */
2351 if (((struct sockaddr *)addr)->sa_family == AF_INET) {
2352 /* The address *MUST* stupidly be zero. */
2353 ((struct sockaddr_in *)addr)->sin_addr.s_addr = INADDR_ANY;
2354 /* PRIV mode is required to bind() to ports < 1024. */
2355 if (((struct sockaddr_in *)addr)->sin_port < 1024 &&
2356 ((struct sockaddr_in *)addr)->sin_port > 0) {
2357 GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
2358 mpeprivmode = 1;
2359 }
2360 }
2361#endif /* MPE */
2362 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2363 (struct sockaddr *)addr, len) >= 0)
2364 bind_ok = 1;
2365
2366#ifdef MPE /* Switch back to USER mode */
2367 if (mpeprivmode)
2368 GETUSERMODE();
2369#endif /* MPE */
2370
2371 if (bind_ok)
a0d0e21e
LW		 2372 RETPUSHYES;
2373 else
2374 RETPUSHUNDEF;
2375
2376nuts:
599cee73 2377 if (ckWARN(WARN_CLOSED))
bc37a18f 2378 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2379 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2380 RETPUSHUNDEF;
2381#else
cea2e8a9 2382 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2383#endif
2384}
2385
2386PP(pp_connect)
2387{
a0d0e21e 2388#ifdef HAS_SOCKET
9cad6237 2389 dSP;
748a9306 2390 SV *addrsv = POPs;
a0d0e21e
LW		 2391 char *addr;
2392 GV *gv = (GV*)POPs;
2393 register IO *io = GvIOn(gv);
2394 STRLEN len;
2395
2396 if (!io || !IoIFP(io))
2397 goto nuts;
2398
748a9306 2399 addr = SvPV(addrsv, len);
a0d0e21e 2400 TAINT_PROPER("connect");
6ad3d225 2401 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2402 RETPUSHYES;
2403 else
2404 RETPUSHUNDEF;
2405
2406nuts:
599cee73 2407 if (ckWARN(WARN_CLOSED))
bc37a18f 2408 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2409 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2410 RETPUSHUNDEF;
2411#else
cea2e8a9 2412 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2413#endif
2414}
2415
2416PP(pp_listen)
2417{
a0d0e21e 2418#ifdef HAS_SOCKET
9cad6237 2419 dSP;
a0d0e21e
LW		 2420 int backlog = POPi;
2421 GV *gv = (GV*)POPs;
c289d2f7 2422 register IO *io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2423
c289d2f7 2424 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2425 goto nuts;
2426
6ad3d225 2427 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2428 RETPUSHYES;
2429 else
2430 RETPUSHUNDEF;
2431
2432nuts:
599cee73 2433 if (ckWARN(WARN_CLOSED))
bc37a18f 2434 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2435 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2436 RETPUSHUNDEF;
2437#else
cea2e8a9 2438 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2439#endif
2440}
2441
2442PP(pp_accept)
2443{
a0d0e21e 2444#ifdef HAS_SOCKET
9cad6237 2445 dSP; dTARGET;
a0d0e21e
LW		 2446 GV *ngv;
2447 GV *ggv;
2448 register IO *nstio;
2449 register IO *gstio;
4633a7c4 2450 struct sockaddr saddr; /* use a struct to avoid alignment problems */
1e422769 2451 Sock_size_t len = sizeof saddr;
a0d0e21e
LW		 2452 int fd;
2453
2454 ggv = (GV*)POPs;
2455 ngv = (GV*)POPs;
2456
2457 if (!ngv)
2458 goto badexit;
2459 if (!ggv)
2460 goto nuts;
2461
2462 gstio = GvIO(ggv);
2463 if (!gstio || !IoIFP(gstio))
2464 goto nuts;
2465
2466 nstio = GvIOn(ngv);
2467 if (IoIFP(nstio))
2468 do_close(ngv, FALSE);
2469
6ad3d225 2470 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *)&saddr, &len);
a0d0e21e
LW		 2471 if (fd < 0)
2472 goto badexit;
760ac839
LW		 2473 IoIFP(nstio) = PerlIO_fdopen(fd, "r");
2474 IoOFP(nstio) = PerlIO_fdopen(fd, "w");
50952442 2475 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2476 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2477 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2478 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2479 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2480 goto badexit;
2481 }
8d2a6795
GS		 2482#if defined(HAS_FCNTL) && defined(F_SETFD)
2483 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2484#endif
a0d0e21e 2485
ed79a026 2486#ifdef EPOC
a9f1f6b0
OF		 2487 len = sizeof saddr; /* EPOC somehow truncates info */
2488 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026
OF		 2489#endif
2490
748a9306 2491 PUSHp((char *)&saddr, len);
a0d0e21e
LW		 2492 RETURN;
2493
2494nuts:
599cee73 2495 if (ckWARN(WARN_CLOSED))
bc37a18f 2496 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
748a9306 2497 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2498
2499badexit:
2500 RETPUSHUNDEF;
2501
2502#else
cea2e8a9 2503 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2504#endif
2505}
2506
2507PP(pp_shutdown)
2508{
a0d0e21e 2509#ifdef HAS_SOCKET
9cad6237 2510 dSP; dTARGET;
a0d0e21e
LW		 2511 int how = POPi;
2512 GV *gv = (GV*)POPs;
2513 register IO *io = GvIOn(gv);
2514
2515 if (!io || !IoIFP(io))
2516 goto nuts;
2517
6ad3d225 2518 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2519 RETURN;
2520
2521nuts:
599cee73 2522 if (ckWARN(WARN_CLOSED))
bc37a18f 2523 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2524 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2525 RETPUSHUNDEF;
2526#else
cea2e8a9 2527 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2528#endif
2529}
2530
2531PP(pp_gsockopt)
2532{
2533#ifdef HAS_SOCKET
cea2e8a9 2534 return pp_ssockopt();
a0d0e21e 2535#else
cea2e8a9 2536 DIE(aTHX_ PL_no_sock_func, "getsockopt");
a0d0e21e
LW		 2537#endif
2538}
2539
2540PP(pp_ssockopt)
2541{
a0d0e21e 2542#ifdef HAS_SOCKET
9cad6237 2543 dSP;
533c011a 2544 int optype = PL_op->op_type;
a0d0e21e
LW		 2545 SV *sv;
2546 int fd;
2547 unsigned int optname;
2548 unsigned int lvl;
2549 GV *gv;
2550 register IO *io;
1e422769 2551 Sock_size_t len;
a0d0e21e
LW		 2552
2553 if (optype == OP_GSOCKOPT)
2554 sv = sv_2mortal(NEWSV(22, 257));
2555 else
2556 sv = POPs;
2557 optname = (unsigned int) POPi;
2558 lvl = (unsigned int) POPi;
2559
2560 gv = (GV*)POPs;
2561 io = GvIOn(gv);
2562 if (!io || !IoIFP(io))
2563 goto nuts;
2564
760ac839 2565 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2566 switch (optype) {
2567 case OP_GSOCKOPT:
748a9306 2568 SvGROW(sv, 257);
a0d0e21e 2569 (void)SvPOK_only(sv);
748a9306
LW		 2570 SvCUR_set(sv,256);
2571 *SvEND(sv) ='\0';
1e422769 2572 len = SvCUR(sv);
6ad3d225 2573 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2574 goto nuts2;
1e422769 2575 SvCUR_set(sv, len);
748a9306 2576 *SvEND(sv) ='\0';
a0d0e21e
LW		 2577 PUSHs(sv);
2578 break;
2579 case OP_SSOCKOPT: {
1e422769 2580 char *buf;
2581 int aint;
2582 if (SvPOKp(sv)) {
2d8e6c8d
GS		 2583 STRLEN l;
2584 buf = SvPV(sv, l);
2585 len = l;
1e422769 2586 }
56ee1660 2587 else {
a0d0e21e
LW		 2588 aint = (int)SvIV(sv);
2589 buf = (char*)&aint;
2590 len = sizeof(int);
2591 }
6ad3d225 2592 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2593 goto nuts2;
3280af22 2594 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2595 }
2596 break;
2597 }
2598 RETURN;
2599
2600nuts:
599cee73 2601 if (ckWARN(WARN_CLOSED))
bc37a18f 2602 report_evil_fh(gv, io, optype);
748a9306 2603 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2604nuts2:
2605 RETPUSHUNDEF;
2606
2607#else
cea2e8a9 2608 DIE(aTHX_ PL_no_sock_func, "setsockopt");
a0d0e21e
LW		 2609#endif
2610}
2611
2612PP(pp_getsockname)
2613{
2614#ifdef HAS_SOCKET
cea2e8a9 2615 return pp_getpeername();
a0d0e21e 2616#else
cea2e8a9 2617 DIE(aTHX_ PL_no_sock_func, "getsockname");
a0d0e21e
LW		 2618#endif
2619}
2620
2621PP(pp_getpeername)
2622{
a0d0e21e 2623#ifdef HAS_SOCKET
9cad6237 2624 dSP;
533c011a 2625 int optype = PL_op->op_type;
a0d0e21e
LW		 2626 SV *sv;
2627 int fd;
2628 GV *gv = (GV*)POPs;
2629 register IO *io = GvIOn(gv);
1e422769 2630 Sock_size_t len;
a0d0e21e
LW		 2631
2632 if (!io || !IoIFP(io))
2633 goto nuts;
2634
2635 sv = sv_2mortal(NEWSV(22, 257));
748a9306 2636 (void)SvPOK_only(sv);
1e422769 2637 len = 256;
2638 SvCUR_set(sv, len);
748a9306 2639 *SvEND(sv) ='\0';
760ac839 2640 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2641 switch (optype) {
2642 case OP_GETSOCKNAME:
6ad3d225 2643 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2644 goto nuts2;
2645 break;
2646 case OP_GETPEERNAME:
6ad3d225 2647 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2648 goto nuts2;
490ab354
JH		 2649#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2650 {
2651 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";
2652 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2653 if (((struct sockaddr *)SvPVX(sv))->sa_family == AF_INET &&
2654 !memcmp((char *)SvPVX(sv) + sizeof(u_short), nowhere,
2655 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2656 goto nuts2;
490ab354
JH		 2657 }
2658 }
2659#endif
a0d0e21e
LW		 2660 break;
2661 }
13826f2c
CS		 2662#ifdef BOGUS_GETNAME_RETURN
2663 /* Interactive Unix, getpeername() and getsockname()
2664 does not return valid namelen */
1e422769 2665 if (len == BOGUS_GETNAME_RETURN)
2666 len = sizeof(struct sockaddr);
13826f2c 2667#endif
1e422769 2668 SvCUR_set(sv, len);
748a9306 2669 *SvEND(sv) ='\0';
a0d0e21e
LW		 2670 PUSHs(sv);
2671 RETURN;
2672
2673nuts:
599cee73 2674 if (ckWARN(WARN_CLOSED))
bc37a18f 2675 report_evil_fh(gv, io, optype);
748a9306 2676 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2677nuts2:
2678 RETPUSHUNDEF;
2679
2680#else
cea2e8a9 2681 DIE(aTHX_ PL_no_sock_func, "getpeername");
a0d0e21e
LW		 2682#endif
2683}
2684
2685/* Stat calls. */
2686
2687PP(pp_lstat)
2688{
cea2e8a9 2689 return pp_stat();
a0d0e21e
LW		 2690}
2691
2692PP(pp_stat)
2693{
39644a26 2694 dSP;
2dd78f96 2695 GV *gv;
54310121 2696 I32 gimme;
a0d0e21e 2697 I32 max = 13;
2d8e6c8d 2698 STRLEN n_a;
a0d0e21e 2699
533c011a 2700 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2701 gv = cGVOP_gv;
8a4e5b40
DD		 2702 if (PL_op->op_type == OP_LSTAT) {
2703 if (PL_laststype != OP_LSTAT)
2704 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2705 if (ckWARN(WARN_IO) && gv != PL_defgv)
2706 Perl_warner(aTHX_ WARN_IO,
2dd78f96 2707 "lstat() on filehandle %s", GvENAME(gv));
8a4e5b40
DD		 2708 /* Perl_my_lstat (-l) croak's on filehandle, why warn here? */
2709 }
2710
748a9306 2711 do_fstat:
2dd78f96 2712 if (gv != PL_defgv) {
3280af22 2713 PL_laststype = OP_STAT;
2dd78f96 2714 PL_statgv = gv;
3280af22 2715 sv_setpv(PL_statname, "");
2dd78f96
JH		 2716 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2717 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
a0d0e21e 2718 }
9ddeeac9 2719 if (PL_laststatval < 0) {
2dd78f96
JH		 2720 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2721 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2722 max = 0;
9ddeeac9 2723 }
a0d0e21e
LW		 2724 }
2725 else {
748a9306
LW		 2726 SV* sv = POPs;
2727 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2728 gv = (GV*)sv;
748a9306
LW		 2729 goto do_fstat;
2730 }
2731 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 2732 gv = (GV*)SvRV(sv);
748a9306
LW		 2733 goto do_fstat;
2734 }
2d8e6c8d 2735 sv_setpv(PL_statname, SvPV(sv,n_a));
3280af22 2736 PL_statgv = Nullgv;
a0d0e21e 2737#ifdef HAS_LSTAT
533c011a
NIS		 2738 PL_laststype = PL_op->op_type;
2739 if (PL_op->op_type == OP_LSTAT)
2d8e6c8d 2740 PL_laststatval = PerlLIO_lstat(SvPV(PL_statname, n_a), &PL_statcache);
a0d0e21e
LW		 2741 else
2742#endif
2d8e6c8d 2743 PL_laststatval = PerlLIO_stat(SvPV(PL_statname, n_a), &PL_statcache);
3280af22 2744 if (PL_laststatval < 0) {
2d8e6c8d 2745 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(PL_statname, n_a), '\n'))
cea2e8a9 2746 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
a0d0e21e
LW		 2747 max = 0;
2748 }
2749 }
2750
54310121 2751 gimme = GIMME_V;
2752 if (gimme != G_ARRAY) {
2753 if (gimme != G_VOID)
2754 XPUSHs(boolSV(max));
2755 RETURN;
a0d0e21e
LW		 2756 }
2757 if (max) {
36477c24 2758 EXTEND(SP, max);
2759 EXTEND_MORTAL(max);
1ff81528
PL		 2760 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2761 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2762 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2763 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2764#if Uid_t_size > IVSIZE
2765 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2766#else
23dcd6c8 2767# if Uid_t_sign <= 0
1ff81528 2768 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2769# else
2770 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2771# endif
146174a9 2772#endif
301e8125 2773#if Gid_t_size > IVSIZE
146174a9
CB		 2774 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2775#else
23dcd6c8 2776# if Gid_t_sign <= 0
1ff81528 2777 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2778# else
2779 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2780# endif
146174a9 2781#endif
cbdc8872 2782#ifdef USE_STAT_RDEV
1ff81528 2783 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2784#else
79cb57f6 2785 PUSHs(sv_2mortal(newSVpvn("", 0)));
cbdc8872 2786#endif
146174a9
CB		 2787#if Off_t_size > IVSIZE
2788 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_size)));
2789#else
1ff81528 2790 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2791#endif
cbdc8872 2792#ifdef BIG_TIME
172ae379
JH		 2793 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2794 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2795 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2796#else
1ff81528
PL		 2797 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2798 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2799 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
cbdc8872 2800#endif
a0d0e21e 2801#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2802 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2803 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2804#else
79cb57f6
GS		 2805 PUSHs(sv_2mortal(newSVpvn("", 0)));
2806 PUSHs(sv_2mortal(newSVpvn("", 0)));
a0d0e21e
LW		 2807#endif
2808 }
2809 RETURN;
2810}
2811
2812PP(pp_ftrread)
2813{
9cad6237 2814 I32 result;
2a3ff820 2815 dSP;
5ff3f7a4 2816#if defined(HAS_ACCESS) && defined(R_OK)
2d8e6c8d 2817 STRLEN n_a;
5ff3f7a4 2818 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2819 result = access(TOPpx, R_OK);
5ff3f7a4
GS		 2820 if (result == 0)
2821 RETPUSHYES;
2822 if (result < 0)
2823 RETPUSHUNDEF;
2824 RETPUSHNO;
22865c03
GS		 2825 }
2826 else
cea2e8a9 2827 result = my_stat();
5ff3f7a4 2828#else
cea2e8a9 2829 result = my_stat();
5ff3f7a4 2830#endif
22865c03 2831 SPAGAIN;
a0d0e21e
LW		 2832 if (result < 0)
2833 RETPUSHUNDEF;
3280af22 2834 if (cando(S_IRUSR, 0, &PL_statcache))
a0d0e21e
LW		 2835 RETPUSHYES;
2836 RETPUSHNO;
2837}
2838
2839PP(pp_ftrwrite)
2840{
9cad6237 2841 I32 result;
2a3ff820 2842 dSP;
5ff3f7a4 2843#if defined(HAS_ACCESS) && defined(W_OK)
2d8e6c8d 2844 STRLEN n_a;
5ff3f7a4 2845 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2846 result = access(TOPpx, W_OK);
5ff3f7a4
GS		 2847 if (result == 0)
2848 RETPUSHYES;
2849 if (result < 0)
2850 RETPUSHUNDEF;
2851 RETPUSHNO;
22865c03
GS		 2852 }
2853 else
cea2e8a9 2854 result = my_stat();
5ff3f7a4 2855#else
cea2e8a9 2856 result = my_stat();
5ff3f7a4 2857#endif
22865c03 2858 SPAGAIN;
a0d0e21e
LW		 2859 if (result < 0)
2860 RETPUSHUNDEF;
3280af22 2861 if (cando(S_IWUSR, 0, &PL_statcache))
a0d0e21e
LW		 2862 RETPUSHYES;
2863 RETPUSHNO;
2864}
2865
2866PP(pp_ftrexec)
2867{
9cad6237 2868 I32 result;
2a3ff820 2869 dSP;
5ff3f7a4 2870#if defined(HAS_ACCESS) && defined(X_OK)
2d8e6c8d 2871 STRLEN n_a;
5ff3f7a4 2872 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2873 result = access(TOPpx, X_OK);
5ff3f7a4
GS		 2874 if (result == 0)
2875 RETPUSHYES;
2876 if (result < 0)
2877 RETPUSHUNDEF;
2878 RETPUSHNO;
22865c03
GS		 2879 }
2880 else
cea2e8a9 2881 result = my_stat();
5ff3f7a4 2882#else
cea2e8a9 2883 result = my_stat();
5ff3f7a4 2884#endif
22865c03 2885 SPAGAIN;
a0d0e21e
LW		 2886 if (result < 0)
2887 RETPUSHUNDEF;
3280af22 2888 if (cando(S_IXUSR, 0, &PL_statcache))
a0d0e21e
LW		 2889 RETPUSHYES;
2890 RETPUSHNO;
2891}
2892
2893PP(pp_fteread)
2894{
9cad6237 2895 I32 result;
2a3ff820 2896 dSP;
5ff3f7a4 2897#ifdef PERL_EFF_ACCESS_R_OK
2d8e6c8d 2898 STRLEN n_a;
5ff3f7a4 2899 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2900 result = PERL_EFF_ACCESS_R_OK(TOPpx);
5ff3f7a4
GS		 2901 if (result == 0)
2902 RETPUSHYES;
2903 if (result < 0)
2904 RETPUSHUNDEF;
2905 RETPUSHNO;
22865c03
GS		 2906 }
2907 else
cea2e8a9 2908 result = my_stat();
5ff3f7a4 2909#else
cea2e8a9 2910 result = my_stat();
5ff3f7a4 2911#endif
22865c03 2912 SPAGAIN;
a0d0e21e
LW		 2913 if (result < 0)
2914 RETPUSHUNDEF;
3280af22 2915 if (cando(S_IRUSR, 1, &PL_statcache))
a0d0e21e
LW		 2916 RETPUSHYES;
2917 RETPUSHNO;
2918}
2919
2920PP(pp_ftewrite)
2921{
9cad6237 2922 I32 result;
2a3ff820 2923 dSP;
5ff3f7a4 2924#ifdef PERL_EFF_ACCESS_W_OK
2d8e6c8d 2925 STRLEN n_a;
5ff3f7a4 2926 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2927 result = PERL_EFF_ACCESS_W_OK(TOPpx);
5ff3f7a4
GS		 2928 if (result == 0)
2929 RETPUSHYES;
2930 if (result < 0)
2931 RETPUSHUNDEF;
2932 RETPUSHNO;
22865c03
GS		 2933 }
2934 else
cea2e8a9 2935 result = my_stat();
5ff3f7a4 2936#else
cea2e8a9 2937 result = my_stat();
5ff3f7a4 2938#endif
22865c03 2939 SPAGAIN;
a0d0e21e
LW		 2940 if (result < 0)
2941 RETPUSHUNDEF;
3280af22 2942 if (cando(S_IWUSR, 1, &PL_statcache))
a0d0e21e
LW		 2943 RETPUSHYES;
2944 RETPUSHNO;
2945}
2946
2947PP(pp_fteexec)
2948{
9cad6237 2949 I32 result;
2a3ff820 2950 dSP;
5ff3f7a4 2951#ifdef PERL_EFF_ACCESS_X_OK
2d8e6c8d 2952 STRLEN n_a;
5ff3f7a4 2953 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2954 result = PERL_EFF_ACCESS_X_OK(TOPpx);
5ff3f7a4
GS		 2955 if (result == 0)
2956 RETPUSHYES;
2957 if (result < 0)
2958 RETPUSHUNDEF;
2959 RETPUSHNO;
22865c03
GS		 2960 }
2961 else
cea2e8a9 2962 result = my_stat();
5ff3f7a4 2963#else
cea2e8a9 2964 result = my_stat();
5ff3f7a4 2965#endif
22865c03 2966 SPAGAIN;
a0d0e21e
LW		 2967 if (result < 0)
2968 RETPUSHUNDEF;
3280af22 2969 if (cando(S_IXUSR, 1, &PL_statcache))
a0d0e21e
LW		 2970 RETPUSHYES;
2971 RETPUSHNO;
2972}
2973
2974PP(pp_ftis)
2975{
9cad6237 2976 I32 result = my_stat();
2a3ff820 2977 dSP;
a0d0e21e
LW		 2978 if (result < 0)
2979 RETPUSHUNDEF;
2980 RETPUSHYES;
2981}
2982
2983PP(pp_fteowned)
2984{
cea2e8a9 2985 return pp_ftrowned();
a0d0e21e
LW		 2986}
2987
2988PP(pp_ftrowned)
2989{
9cad6237 2990 I32 result = my_stat();
2a3ff820 2991 dSP;
a0d0e21e
LW		 2992 if (result < 0)
2993 RETPUSHUNDEF;
146174a9
CB		 2994 if (PL_statcache.st_uid == (PL_op->op_type == OP_FTEOWNED ?
2995 PL_euid : PL_uid) )
a0d0e21e
LW		 2996 RETPUSHYES;
2997 RETPUSHNO;
2998}
2999
3000PP(pp_ftzero)
3001{
9cad6237 3002 I32 result = my_stat();
2a3ff820 3003 dSP;
a0d0e21e
LW		 3004 if (result < 0)
3005 RETPUSHUNDEF;
146174a9 3006 if (PL_statcache.st_size == 0)
a0d0e21e
LW		 3007 RETPUSHYES;
3008 RETPUSHNO;
3009}
3010
3011PP(pp_ftsize)
3012{
9cad6237 3013 I32 result = my_stat();
2a3ff820 3014 dSP; dTARGET;
a0d0e21e
LW		 3015 if (result < 0)
3016 RETPUSHUNDEF;
146174a9
CB		 3017#if Off_t_size > IVSIZE
3018 PUSHn(PL_statcache.st_size);
3019#else
3280af22 3020 PUSHi(PL_statcache.st_size);
146174a9 3021#endif
a0d0e21e
LW		 3022 RETURN;
3023}
3024
3025PP(pp_ftmtime)
3026{
9cad6237 3027 I32 result = my_stat();
2a3ff820 3028 dSP; dTARGET;
a0d0e21e
LW		 3029 if (result < 0)
3030 RETPUSHUNDEF;
c6419e06 3031 PUSHn( (PL_basetime - PL_statcache.st_mtime) / 86400.0 );
a0d0e21e
LW		 3032 RETURN;
3033}
3034
3035PP(pp_ftatime)
3036{
9cad6237 3037 I32 result = my_stat();
2a3ff820 3038 dSP; dTARGET;
a0d0e21e
LW		 3039 if (result < 0)
3040 RETPUSHUNDEF;
c6419e06 3041 PUSHn( (PL_basetime - PL_statcache.st_atime) / 86400.0 );
a0d0e21e
LW		 3042 RETURN;
3043}
3044
3045PP(pp_ftctime)
3046{
9cad6237 3047 I32 result = my_stat();
2a3ff820 3048 dSP; dTARGET;
a0d0e21e
LW		 3049 if (result < 0)
3050 RETPUSHUNDEF;
c6419e06 3051 PUSHn( (PL_basetime - PL_statcache.st_ctime) / 86400.0 );
a0d0e21e
LW		 3052 RETURN;
3053}
3054
3055PP(pp_ftsock)
3056{
9cad6237 3057 I32 result = my_stat();
2a3ff820 3058 dSP;
a0d0e21e
LW		 3059 if (result < 0)
3060 RETPUSHUNDEF;
3280af22 3061 if (S_ISSOCK(PL_statcache.st_mode))
a0d0e21e
LW		 3062 RETPUSHYES;
3063 RETPUSHNO;
3064}
3065
3066PP(pp_ftchr)
3067{
9cad6237 3068 I32 result = my_stat();
2a3ff820 3069 dSP;
a0d0e21e
LW		 3070 if (result < 0)
3071 RETPUSHUNDEF;
3280af22 3072 if (S_ISCHR(PL_statcache.st_mode))
a0d0e21e
LW		 3073 RETPUSHYES;
3074 RETPUSHNO;
3075}
3076
3077PP(pp_ftblk)
3078{
9cad6237 3079 I32 result = my_stat();
2a3ff820 3080 dSP;
a0d0e21e
LW		 3081 if (result < 0)
3082 RETPUSHUNDEF;
3280af22 3083 if (S_ISBLK(PL_statcache.st_mode))
a0d0e21e
LW		 3084 RETPUSHYES;
3085 RETPUSHNO;
3086}
3087
3088PP(pp_ftfile)
3089{
9cad6237 3090 I32 result = my_stat();
2a3ff820 3091 dSP;
a0d0e21e
LW		 3092 if (result < 0)
3093 RETPUSHUNDEF;
3280af22 3094 if (S_ISREG(PL_statcache.st_mode))
a0d0e21e
LW		 3095 RETPUSHYES;
3096 RETPUSHNO;
3097}
3098
3099PP(pp_ftdir)
3100{
9cad6237 3101 I32 result = my_stat();
2a3ff820 3102 dSP;
a0d0e21e
LW		 3103 if (result < 0)
3104 RETPUSHUNDEF;
3280af22 3105 if (S_ISDIR(PL_statcache.st_mode))
a0d0e21e
LW		 3106 RETPUSHYES;
3107 RETPUSHNO;
3108}
3109
3110PP(pp_ftpipe)
3111{
9cad6237 3112 I32 result = my_stat();
2a3ff820 3113 dSP;
a0d0e21e
LW		 3114 if (result < 0)
3115 RETPUSHUNDEF;
3280af22 3116 if (S_ISFIFO(PL_statcache.st_mode))
a0d0e21e
LW		 3117 RETPUSHYES;
3118 RETPUSHNO;
3119}
3120
3121PP(pp_ftlink)
3122{
9cad6237 3123 I32 result = my_lstat();
2a3ff820 3124 dSP;
a0d0e21e
LW		 3125 if (result < 0)
3126 RETPUSHUNDEF;
3280af22 3127 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e
LW		 3128 RETPUSHYES;
3129 RETPUSHNO;
3130}
3131
3132PP(pp_ftsuid)
3133{
39644a26 3134 dSP;
a0d0e21e 3135#ifdef S_ISUID
cea2e8a9 3136 I32 result = my_stat();
a0d0e21e
LW		 3137 SPAGAIN;
3138 if (result < 0)
3139 RETPUSHUNDEF;
3280af22 3140 if (PL_statcache.st_mode & S_ISUID)
a0d0e21e
LW		 3141 RETPUSHYES;
3142#endif
3143 RETPUSHNO;
3144}
3145
3146PP(pp_ftsgid)
3147{
39644a26 3148 dSP;
a0d0e21e 3149#ifdef S_ISGID
cea2e8a9 3150 I32 result = my_stat();
a0d0e21e
LW		 3151 SPAGAIN;
3152 if (result < 0)
3153 RETPUSHUNDEF;
3280af22 3154 if (PL_statcache.st_mode & S_ISGID)
a0d0e21e
LW		 3155 RETPUSHYES;
3156#endif
3157 RETPUSHNO;
3158}
3159
3160PP(pp_ftsvtx)
3161{
39644a26 3162 dSP;
a0d0e21e 3163#ifdef S_ISVTX
cea2e8a9 3164 I32 result = my_stat();
a0d0e21e
LW		 3165 SPAGAIN;
3166 if (result < 0)
3167 RETPUSHUNDEF;
3280af22 3168 if (PL_statcache.st_mode & S_ISVTX)
a0d0e21e
LW		 3169 RETPUSHYES;
3170#endif
3171 RETPUSHNO;
3172}
3173
3174PP(pp_fttty)
3175{
39644a26 3176 dSP;
a0d0e21e
LW		 3177 int fd;
3178 GV *gv;
fb73857a 3179 char *tmps = Nullch;
2d8e6c8d 3180 STRLEN n_a;
fb73857a 3181
533c011a 3182 if (PL_op->op_flags & OPf_REF)
146174a9 3183 gv = cGVOP_gv;
fb73857a 3184 else if (isGV(TOPs))
3185 gv = (GV*)POPs;
3186 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3187 gv = (GV*)SvRV(POPs);
a0d0e21e 3188 else
2d8e6c8d 3189 gv = gv_fetchpv(tmps = POPpx, FALSE, SVt_PVIO);
fb73857a 3190
a0d0e21e 3191 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3192 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
fb73857a 3193 else if (tmps && isDIGIT(*tmps))
a0d0e21e
LW		 3194 fd = atoi(tmps);
3195 else
3196 RETPUSHUNDEF;
6ad3d225 3197 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3198 RETPUSHYES;
3199 RETPUSHNO;
3200}
3201
16d20bd9
AD		 3202#if defined(atarist) /* this will work with atariST. Configure will
3203 make guesses for other systems. */
3204# define FILE_base(f) ((f)->_base)
3205# define FILE_ptr(f) ((f)->_ptr)
3206# define FILE_cnt(f) ((f)->_cnt)
3207# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3208#endif
3209
3210PP(pp_fttext)
3211{
39644a26 3212 dSP;
a0d0e21e
LW		 3213 I32 i;
3214 I32 len;
3215 I32 odd = 0;
3216 STDCHAR tbuf[512];
3217 register STDCHAR *s;
3218 register IO *io;
5f05dabc 3219 register SV *sv;
3220 GV *gv;
2d8e6c8d 3221 STRLEN n_a;
146174a9 3222 PerlIO *fp;
a0d0e21e 3223
533c011a 3224 if (PL_op->op_flags & OPf_REF)
146174a9 3225 gv = cGVOP_gv;
5f05dabc 3226 else if (isGV(TOPs))
3227 gv = (GV*)POPs;
3228 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3229 gv = (GV*)SvRV(POPs);
3230 else
3231 gv = Nullgv;
3232
3233 if (gv) {
a0d0e21e 3234 EXTEND(SP, 1);
3280af22
NIS		 3235 if (gv == PL_defgv) {
3236 if (PL_statgv)
3237 io = GvIO(PL_statgv);
a0d0e21e 3238 else {
3280af22 3239 sv = PL_statname;
a0d0e21e
LW		 3240 goto really_filename;
3241 }
3242 }
3243 else {
3280af22
NIS		 3244 PL_statgv = gv;
3245 PL_laststatval = -1;
3246 sv_setpv(PL_statname, "");
3247 io = GvIO(PL_statgv);
a0d0e21e
LW		 3248 }
3249 if (io && IoIFP(io)) {
5f05dabc 3250 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3251 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3252 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3253 if (PL_laststatval < 0)
5f05dabc 3254 RETPUSHUNDEF;
9cbac4c7 3255 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3256 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3257 RETPUSHNO;
3258 else
3259 RETPUSHYES;
9cbac4c7 3260 }
a20bf0c3 3261 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3262 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3263 if (i != EOF)
760ac839 3264 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3265 }
a20bf0c3 3266 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3267 RETPUSHYES;
a20bf0c3
JH		 3268 len = PerlIO_get_bufsiz(IoIFP(io));
3269 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3270 /* sfio can have large buffers - limit to 512 */
3271 if (len > 512)
3272 len = 512;
a0d0e21e
LW		 3273 }
3274 else {
2dd78f96 3275 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3276 gv = cGVOP_gv;
2dd78f96 3277 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3278 }
748a9306 3279 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 3280 RETPUSHUNDEF;
3281 }
3282 }
3283 else {
3284 sv = POPs;
5f05dabc 3285 really_filename:
3280af22
NIS		 3286 PL_statgv = Nullgv;
3287 PL_laststatval = -1;
2d8e6c8d 3288 sv_setpv(PL_statname, SvPV(sv, n_a));
146174a9 3289 if (!(fp = PerlIO_open(SvPVX(PL_statname), "r"))) {
2d8e6c8d 3290 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
cea2e8a9 3291 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
a0d0e21e
LW		 3292 RETPUSHUNDEF;
3293 }
146174a9
CB		 3294 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3295 if (PL_laststatval < 0) {
3296 (void)PerlIO_close(fp);
5f05dabc 3297 RETPUSHUNDEF;
146174a9 3298 }
60382766 3299 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
146174a9
CB		 3300 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3301 (void)PerlIO_close(fp);
a0d0e21e 3302 if (len <= 0) {
533c011a 3303 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3304 RETPUSHNO; /* special case NFS directories */
3305 RETPUSHYES; /* null file is anything */
3306 }
3307 s = tbuf;
3308 }
3309
3310 /* now scan s to look for textiness */
4633a7c4 3311 /* XXX ASCII dependent code */
a0d0e21e 3312
146174a9
CB		 3313#if defined(DOSISH) || defined(USEMYBINMODE)
3314 /* ignore trailing ^Z on short files */
3315 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3316 --len;
3317#endif
3318
a0d0e21e
LW		 3319 for (i = 0; i < len; i++, s++) {
3320 if (!*s) { /* null never allowed in text */
3321 odd += len;
3322 break;
3323 }
9d116dd7 3324#ifdef EBCDIC
301e8125 3325 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3326 odd++;
3327#else
146174a9
CB		 3328 else if (*s & 128) {
3329#ifdef USE_LOCALE
2de3dbcc 3330 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3331 continue;
3332#endif
3333 /* utf8 characters don't count as odd */
fd400ab9 3334 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3335 int ulen = UTF8SKIP(s);
3336 if (ulen < len - i) {
3337 int j;
3338 for (j = 1; j < ulen; j++) {
fd400ab9 3339 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3340 goto not_utf8;
3341 }
3342 --ulen; /* loop does extra increment */
3343 s += ulen;
3344 i += ulen;
3345 continue;
3346 }
3347 }
3348 not_utf8:
3349 odd++;
146174a9 3350 }
a0d0e21e
LW		 3351 else if (*s < 32 &&
3352 *s != '\n' && *s != '\r' && *s != '\b' &&
3353 *s != '\t' && *s != '\f' && *s != 27)
3354 odd++;
9d116dd7 3355#endif
a0d0e21e
LW		 3356 }
3357
533c011a 3358 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3359 RETPUSHNO;
3360 else
3361 RETPUSHYES;
3362}
3363
3364PP(pp_ftbinary)
3365{
cea2e8a9 3366 return pp_fttext();
a0d0e21e
LW		 3367}
3368
3369/* File calls. */
3370
3371PP(pp_chdir)
3372{
39644a26 3373 dSP; dTARGET;
a0d0e21e
LW		 3374 char *tmps;
3375 SV **svp;
2d8e6c8d 3376 STRLEN n_a;
a0d0e21e
LW		 3377
3378 if (MAXARG < 1)
3379 tmps = Nullch;
3380 else
2d8e6c8d 3381 tmps = POPpx;
a0d0e21e 3382 if (!tmps || !*tmps) {
3280af22 3383 svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE);
a0d0e21e 3384 if (svp)
2d8e6c8d 3385 tmps = SvPV(*svp, n_a);
a0d0e21e
LW		 3386 }
3387 if (!tmps || !*tmps) {
3280af22 3388 svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE);
a0d0e21e 3389 if (svp)
2d8e6c8d 3390 tmps = SvPV(*svp, n_a);
a0d0e21e 3391 }
491527d0
GS		 3392#ifdef VMS
3393 if (!tmps || !*tmps) {
6b88bc9c 3394 svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE);
491527d0 3395 if (svp)
2d8e6c8d 3396 tmps = SvPV(*svp, n_a);
491527d0
GS		 3397 }
3398#endif
a0d0e21e 3399 TAINT_PROPER("chdir");
6ad3d225 3400 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3401#ifdef VMS
3402 /* Clear the DEFAULT element of ENV so we'll get the new value
3403 * in the future. */
6b88bc9c 3404 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3405#endif
a0d0e21e
LW		 3406 RETURN;
3407}
3408
3409PP(pp_chown)
3410{
a0d0e21e 3411#ifdef HAS_CHOWN
76ffd3b9
IZ		 3412 dSP; dMARK; dTARGET;
3413 I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3414
a0d0e21e
LW		 3415 SP = MARK;
3416 PUSHi(value);
3417 RETURN;
3418#else
0322a713 3419 DIE(aTHX_ PL_no_func, "chown");
a0d0e21e
LW		 3420#endif
3421}
3422
3423PP(pp_chroot)
3424{
a0d0e21e 3425#ifdef HAS_CHROOT
76ffd3b9 3426 dSP; dTARGET;
2d8e6c8d 3427 STRLEN n_a;
d05c1ba0 3428 char *tmps = POPpx;
a0d0e21e
LW		 3429 TAINT_PROPER("chroot");
3430 PUSHi( chroot(tmps) >= 0 );
3431 RETURN;
3432#else
cea2e8a9 3433 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3434#endif
3435}
3436
3437PP(pp_unlink)
3438{
39644a26 3439 dSP; dMARK; dTARGET;
a0d0e21e 3440 I32 value;
533c011a 3441 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3442 SP = MARK;
3443 PUSHi(value);
3444 RETURN;
3445}
3446
3447PP(pp_chmod)
3448{
39644a26 3449 dSP; dMARK; dTARGET;
a0d0e21e 3450 I32 value;
533c011a 3451 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3452 SP = MARK;
3453 PUSHi(value);
3454 RETURN;
3455}
3456
3457PP(pp_utime)
3458{
39644a26 3459 dSP; dMARK; dTARGET;
a0d0e21e 3460 I32 value;
533c011a 3461 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3462 SP = MARK;
3463 PUSHi(value);
3464 RETURN;
3465}
3466
3467PP(pp_rename)
3468{
39644a26 3469 dSP; dTARGET;
a0d0e21e 3470 int anum;
2d8e6c8d 3471 STRLEN n_a;
a0d0e21e 3472
2d8e6c8d
GS		 3473 char *tmps2 = POPpx;
3474 char *tmps = SvPV(TOPs, n_a);
a0d0e21e
LW		 3475 TAINT_PROPER("rename");
3476#ifdef HAS_RENAME
baed7233 3477 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3478#else
6b88bc9c 3479 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
ed969818
W		 3480 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3481 anum = 1;
3482 else {
3654eb6c 3483 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
ed969818
W		 3484 (void)UNLINK(tmps2);
3485 if (!(anum = link(tmps, tmps2)))
3486 anum = UNLINK(tmps);
3487 }
a0d0e21e
LW		 3488 }
3489#endif
3490 SETi( anum >= 0 );
3491 RETURN;
3492}
3493
3494PP(pp_link)
3495{
1bce926b 3496 dSP;
a0d0e21e 3497#ifdef HAS_LINK
1bce926b 3498 dTARGET;
2d8e6c8d
GS		 3499 STRLEN n_a;
3500 char *tmps2 = POPpx;
3501 char *tmps = SvPV(TOPs, n_a);
a0d0e21e 3502 TAINT_PROPER("link");
146174a9 3503 SETi( PerlLIO_link(tmps, tmps2) >= 0 );
65850d11 3504 RETURN;
a0d0e21e 3505#else
0322a713 3506 DIE(aTHX_ PL_no_func, "link");
a0d0e21e 3507#endif
a0d0e21e
LW		 3508}
3509
3510PP(pp_symlink)
3511{
a0d0e21e 3512#ifdef HAS_SYMLINK
9cad6237 3513 dSP; dTARGET;
2d8e6c8d
GS		 3514 STRLEN n_a;
3515 char *tmps2 = POPpx;
3516 char *tmps = SvPV(TOPs, n_a);
a0d0e21e
LW		 3517 TAINT_PROPER("symlink");
3518 SETi( symlink(tmps, tmps2) >= 0 );
3519 RETURN;
3520#else
cea2e8a9 3521 DIE(aTHX_ PL_no_func, "symlink");
a0d0e21e
LW		 3522#endif
3523}
3524
3525PP(pp_readlink)
3526{
76ffd3b9 3527 dSP;
a0d0e21e 3528#ifdef HAS_SYMLINK
76ffd3b9 3529 dTARGET;
a0d0e21e 3530 char *tmps;
46fc3d4c 3531 char buf[MAXPATHLEN];
a0d0e21e 3532 int len;
2d8e6c8d 3533 STRLEN n_a;
46fc3d4c 3534
fb73857a 3535#ifndef INCOMPLETE_TAINTS
3536 TAINT;
3537#endif
2d8e6c8d 3538 tmps = POPpx;
97dcea33 3539 len = readlink(tmps, buf, sizeof(buf) - 1);
a0d0e21e
LW		 3540 EXTEND(SP, 1);
3541 if (len < 0)
3542 RETPUSHUNDEF;
3543 PUSHp(buf, len);
3544 RETURN;
3545#else
3546 EXTEND(SP, 1);
3547 RETSETUNDEF; /* just pretend it's a normal file */
3548#endif
3549}
3550
3551#if