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[PATCH t/op/taint.t] remove possible false positive
[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW		 1/* pp_sys.c
2 *
be3c0a43 3 * Copyright (c) 1991-2002, Larry Wall
a0d0e21e
LW		 4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
7 *
8 */
9
10/*
11 * But only a short way ahead its floor and the walls on either side were
12 * cloven by a great fissure, out of which the red glare came, now leaping
13 * up, now dying down into darkness; and all the while far below there was
14 * a rumour and a trouble as of great engines throbbing and labouring.
15 */
16
17#include "EXTERN.h"
864dbfa3 18#define PERL_IN_PP_SYS_C
a0d0e21e
LW		 19#include "perl.h"
20
f1066039
JH		 21#ifdef I_SHADOW
22/* Shadow password support for solaris - pdo@cs.umd.edu
23 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH		 24 * The API is from SysV.
25 *
26 * There are at least two more shadow interfaces,
27 * see the comments in pp_gpwent().
28 *
29 * --jhi */
30# ifdef __hpux__
c529f79d 31/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 32 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH		 33# undef MAXINT
34# endif
35# include <shadow.h>
8c0bfa08
PB		 36#endif
37
301e8125
NIS		 38#ifdef HAS_SYSCALL
39#ifdef __cplusplus
8ac85365
NIS		 40extern "C" int syscall(unsigned long,...);
41#endif
42#endif
43
76c32331 44#ifdef I_SYS_WAIT
45# include <sys/wait.h>
46#endif
47
48#ifdef I_SYS_RESOURCE
49# include <sys/resource.h>
16d20bd9 50#endif
a0d0e21e 51
2986a63f
JH		 52#ifdef NETWARE
53NETDB_DEFINE_CONTEXT
54#endif
55
a0d0e21e 56#ifdef HAS_SELECT
1e743fda
JH		 57# ifdef I_SYS_SELECT
58# include <sys/select.h>
59# endif
a0d0e21e 60#endif
a0d0e21e 61
dc45a647
MB		 62/* XXX Configure test needed.
63 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS		 64 applications, see "extern int errno in perl.h". Creating such
65 a test requires taking into account the differences between
66 compiling multithreaded and singlethreaded ($ccflags et al).
67 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 68*/
cb50131a 69#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW		 70extern int h_errno;
71#endif
72
73#ifdef HAS_PASSWD
74# ifdef I_PWD
75# include <pwd.h>
76# else
fd8cd3a3 77# if !defined(VMS)
20ce7b12
GS		 78 struct passwd *getpwnam (char *);
79 struct passwd *getpwuid (Uid_t);
fd8cd3a3 80# endif
a0d0e21e 81# endif
28e8609d 82# ifdef HAS_GETPWENT
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;
96e176bf
CL		 436#ifdef VMS
437 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
438#endif
a0d0e21e
LW		 439 if (SP - MARK != 1) {
440 dTARGET;
3280af22 441 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7
GS		 442 tmpsv = TARG;
443 tmps = SvPV(tmpsv, len);
444 multiarg = 1;
a0d0e21e
LW		 445 SP = MARK + 1;
446 }
447 else {
4e6ea2c3 448 tmpsv = TOPs;
bf484eac 449 tmps = (SvROK(tmpsv) && PL_in_eval) ? Nullch : SvPV(tmpsv, len);
a0d0e21e 450 }
06bf62c7 451 if (!tmps || !len) {
4e6ea2c3
GS		 452 SV *error = ERRSV;
453 (void)SvUPGRADE(error, SVt_PV);
06bf62c7
GS		 454 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
455 if (!multiarg)
4e6ea2c3 456 SvSetSV(error,tmpsv);
06bf62c7 457 else if (sv_isobject(error)) {
05423cc9
GS		 458 HV *stash = SvSTASH(SvRV(error));
459 GV *gv = gv_fetchmethod(stash, "PROPAGATE");
460 if (gv) {
146174a9 461 SV *file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
b448e4fe 462 SV *line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
05423cc9
GS		 463 EXTEND(SP, 3);
464 PUSHMARK(SP);
465 PUSHs(error);
466 PUSHs(file);
467 PUSHs(line);
468 PUTBACK;
864dbfa3
GS		 469 call_sv((SV*)GvCV(gv),
470 G_SCALAR|G_EVAL|G_KEEPERR);
3280af22 471 sv_setsv(error,*PL_stack_sp--);
05423cc9
GS		 472 }
473 }
b3fe4827 474 DIE(aTHX_ Nullformat);
4e6ea2c3
GS		 475 }
476 else {
477 if (SvPOK(error) && SvCUR(error))
478 sv_catpv(error, "\t...propagated");
06bf62c7
GS		 479 tmpsv = error;
480 tmps = SvPV(tmpsv, len);
4e6ea2c3 481 }
a0d0e21e 482 }
06bf62c7
GS		 483 if (!tmps || !len)
484 tmpsv = sv_2mortal(newSVpvn("Died", 4));
485
cb50131a 486 DIE(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 487}
488
489/* I/O. */
490
491PP(pp_open)
492{
39644a26 493 dSP;
a567e93b
NIS		 494 dMARK; dORIGMARK;
495 dTARGET;
a0d0e21e
LW		 496 GV *gv;
497 SV *sv;
5b468f54 498 IO *io;
a0d0e21e
LW		 499 char *tmps;
500 STRLEN len;
4592e6ca 501 MAGIC *mg;
a567e93b 502 bool ok;
a0d0e21e 503
a567e93b 504 gv = (GV *)*++MARK;
5f05dabc 505 if (!isGV(gv))
cea2e8a9 506 DIE(aTHX_ PL_no_usym, "filehandle");
5b468f54 507 if ((io = GvIOp(gv)))
36477c24 508 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 509
5b468f54 510 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
a567e93b
NIS		 511 /* Method's args are same as ours ... */
512 /* ... except handle is replaced by the object */
5b468f54 513 *MARK-- = SvTIED_obj((SV*)io, mg);
a567e93b 514 PUSHMARK(MARK);
4592e6ca
NIS		 515 PUTBACK;
516 ENTER;
864dbfa3 517 call_method("OPEN", G_SCALAR);
4592e6ca
NIS		 518 LEAVE;
519 SPAGAIN;
520 RETURN;
521 }
522
a567e93b
NIS		 523 if (MARK < SP) {
524 sv = *++MARK;
525 }
526 else {
527 sv = GvSV(gv);
528 }
529
a0d0e21e 530 tmps = SvPV(sv, len);
a567e93b
NIS		 531 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp, MARK+1, (SP-MARK));
532 SP = ORIGMARK;
533 if (ok)
3280af22
NIS		 534 PUSHi( (I32)PL_forkprocess );
535 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 536 PUSHi(0);
537 else
538 RETPUSHUNDEF;
539 RETURN;
540}
541
542PP(pp_close)
543{
39644a26 544 dSP;
a0d0e21e 545 GV *gv;
5b468f54 546 IO *io;
1d603a67 547 MAGIC *mg;
a0d0e21e
LW		 548
549 if (MAXARG == 0)
3280af22 550 gv = PL_defoutgv;
a0d0e21e
LW		 551 else
552 gv = (GV*)POPs;
1d603a67 553
5b468f54
AMS		 554 if (gv && (io = GvIO(gv))
555 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
556 {
1d603a67 557 PUSHMARK(SP);
5b468f54 558 XPUSHs(SvTIED_obj((SV*)io, mg));
1d603a67
GB		 559 PUTBACK;
560 ENTER;
864dbfa3 561 call_method("CLOSE", G_SCALAR);
1d603a67
GB		 562 LEAVE;
563 SPAGAIN;
564 RETURN;
565 }
a0d0e21e 566 EXTEND(SP, 1);
54310121 567 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 568 RETURN;
569}
570
571PP(pp_pipe_op)
572{
a0d0e21e 573#ifdef HAS_PIPE
9cad6237 574 dSP;
a0d0e21e
LW		 575 GV *rgv;
576 GV *wgv;
577 register IO *rstio;
578 register IO *wstio;
579 int fd[2];
580
581 wgv = (GV*)POPs;
582 rgv = (GV*)POPs;
583
584 if (!rgv || !wgv)
585 goto badexit;
586
4633a7c4 587 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
cea2e8a9 588 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 589 rstio = GvIOn(rgv);
590 wstio = GvIOn(wgv);
591
592 if (IoIFP(rstio))
593 do_close(rgv, FALSE);
594 if (IoIFP(wstio))
595 do_close(wgv, FALSE);
596
6ad3d225 597 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 598 goto badexit;
599
760ac839
LW		 600 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
601 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
a0d0e21e 602 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 603 IoTYPE(rstio) = IoTYPE_RDONLY;
604 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 605
606 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 607 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
6ad3d225 608 else PerlLIO_close(fd[0]);
760ac839 609 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
6ad3d225 610 else PerlLIO_close(fd[1]);
a0d0e21e
LW		 611 goto badexit;
612 }
4771b018
GS		 613#if defined(HAS_FCNTL) && defined(F_SETFD)
614 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
615 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
616#endif
a0d0e21e
LW		 617 RETPUSHYES;
618
619badexit:
620 RETPUSHUNDEF;
621#else
cea2e8a9 622 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 623#endif
624}
625
626PP(pp_fileno)
627{
39644a26 628 dSP; dTARGET;
a0d0e21e
LW		 629 GV *gv;
630 IO *io;
760ac839 631 PerlIO *fp;
4592e6ca
NIS		 632 MAGIC *mg;
633
a0d0e21e
LW		 634 if (MAXARG < 1)
635 RETPUSHUNDEF;
636 gv = (GV*)POPs;
4592e6ca 637
5b468f54
AMS		 638 if (gv && (io = GvIO(gv))
639 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
640 {
4592e6ca 641 PUSHMARK(SP);
5b468f54 642 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 643 PUTBACK;
644 ENTER;
864dbfa3 645 call_method("FILENO", G_SCALAR);
4592e6ca
NIS		 646 LEAVE;
647 SPAGAIN;
648 RETURN;
649 }
650
c289d2f7
JH		 651 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
652 /* Can't do this because people seem to do things like
653 defined(fileno($foo)) to check whether $foo is a valid fh.
654 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
655 report_evil_fh(gv, io, PL_op->op_type);
656 */
a0d0e21e 657 RETPUSHUNDEF;
c289d2f7
JH		 658 }
659
760ac839 660 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 661 RETURN;
662}
663
664PP(pp_umask)
665{
39644a26 666 dSP; dTARGET;
d7e492a4 667#ifdef HAS_UMASK
761237fe 668 Mode_t anum;
a0d0e21e 669
a0d0e21e 670 if (MAXARG < 1) {
6ad3d225
GS		 671 anum = PerlLIO_umask(0);
672 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 673 }
674 else
6ad3d225 675 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 676 TAINT_PROPER("umask");
677 XPUSHi(anum);
678#else
eec2d3df
GS		 679 /* Only DIE if trying to restrict permissions on `user' (self).
680 * Otherwise it's harmless and more useful to just return undef
681 * since 'group' and 'other' concepts probably don't exist here. */
682 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 683 DIE(aTHX_ "umask not implemented");
6b88bc9c 684 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 685#endif
686 RETURN;
687}
688
689PP(pp_binmode)
690{
39644a26 691 dSP;
a0d0e21e
LW		 692 GV *gv;
693 IO *io;
760ac839 694 PerlIO *fp;
4592e6ca 695 MAGIC *mg;
16fe6d59 696 SV *discp = Nullsv;
a0d0e21e
LW		 697
698 if (MAXARG < 1)
699 RETPUSHUNDEF;
60382766 700 if (MAXARG > 1) {
16fe6d59 701 discp = POPs;
60382766 702 }
a0d0e21e 703
301e8125 704 gv = (GV*)POPs;
4592e6ca 705
5b468f54
AMS		 706 if (gv && (io = GvIO(gv))
707 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
708 {
4592e6ca 709 PUSHMARK(SP);
5b468f54 710 XPUSHs(SvTIED_obj((SV*)io, mg));
16fe6d59
GS		 711 if (discp)
712 XPUSHs(discp);
4592e6ca
NIS		 713 PUTBACK;
714 ENTER;
864dbfa3 715 call_method("BINMODE", G_SCALAR);
4592e6ca
NIS		 716 LEAVE;
717 SPAGAIN;
718 RETURN;
719 }
a0d0e21e
LW		 720
721 EXTEND(SP, 1);
50f846a7 722 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7
JH		 723 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
724 report_evil_fh(gv, io, PL_op->op_type);
50f846a7
SC		 725 RETPUSHUNDEF;
726 }
a0d0e21e 727
60382766
NIS		 728 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
729 (discp) ? SvPV_nolen(discp) : Nullch))
a0d0e21e
LW		 730 RETPUSHYES;
731 else
732 RETPUSHUNDEF;
a0d0e21e
LW		 733}
734
735PP(pp_tie)
736{
39644a26 737 dSP;
e336de0d 738 dMARK;
a0d0e21e
LW		 739 SV *varsv;
740 HV* stash;
741 GV *gv;
a0d0e21e 742 SV *sv;
3280af22 743 I32 markoff = MARK - PL_stack_base;
a0d0e21e 744 char *methname;
14befaf4 745 int how = PERL_MAGIC_tied;
e336de0d 746 U32 items;
2d8e6c8d 747 STRLEN n_a;
a0d0e21e 748
e336de0d 749 varsv = *++MARK;
6b05c17a
NIS		 750 switch(SvTYPE(varsv)) {
751 case SVt_PVHV:
752 methname = "TIEHASH";
03c6e78a 753 HvEITER((HV *)varsv) = Null(HE *);
6b05c17a
NIS		 754 break;
755 case SVt_PVAV:
756 methname = "TIEARRAY";
757 break;
758 case SVt_PVGV:
7fb37951
AMS		 759#ifdef GV_UNIQUE_CHECK
760 if (GvUNIQUE((GV*)varsv)) {
761 Perl_croak(aTHX_ "Attempt to tie unique GV");
5bd07a3d
DM		 762 }
763#endif
6b05c17a 764 methname = "TIEHANDLE";
14befaf4 765 how = PERL_MAGIC_tiedscalar;
5b468f54
AMS		 766 /* For tied filehandles, we apply tiedscalar magic to the IO
767 slot of the GP rather than the GV itself. AMS 20010812 */
768 if (!GvIOp(varsv))
769 GvIOp(varsv) = newIO();
770 varsv = (SV *)GvIOp(varsv);
6b05c17a
NIS		 771 break;
772 default:
773 methname = "TIESCALAR";
14befaf4 774 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 775 break;
776 }
e336de0d
GS		 777 items = SP - MARK++;
778 if (sv_isobject(*MARK)) {
6b05c17a 779 ENTER;
e788e7d3 780 PUSHSTACKi(PERLSI_MAGIC);
e336de0d
GS		 781 PUSHMARK(SP);
782 EXTEND(SP,items);
783 while (items--)
784 PUSHs(*MARK++);
785 PUTBACK;
864dbfa3 786 call_method(methname, G_SCALAR);
301e8125 787 }
6b05c17a 788 else {
864dbfa3 789 /* Not clear why we don't call call_method here too.
6b05c17a
NIS		 790 * perhaps to get different error message ?
791 */
e336de0d 792 stash = gv_stashsv(*MARK, FALSE);
6b05c17a 793 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
cea2e8a9 794 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%s\"",
301e8125 795 methname, SvPV(*MARK,n_a));
6b05c17a
NIS		 796 }
797 ENTER;
e788e7d3 798 PUSHSTACKi(PERLSI_MAGIC);
e336de0d
GS		 799 PUSHMARK(SP);
800 EXTEND(SP,items);
801 while (items--)
802 PUSHs(*MARK++);
803 PUTBACK;
864dbfa3 804 call_sv((SV*)GvCV(gv), G_SCALAR);
6b05c17a 805 }
a0d0e21e
LW		 806 SPAGAIN;
807
808 sv = TOPs;
d3acc0f7 809 POPSTACK;
a0d0e21e 810 if (sv_isobject(sv)) {
33c27489 811 sv_unmagic(varsv, how);
ae21d580
JH		 812 /* Croak if a self-tie on an aggregate is attempted. */
813 if (varsv == SvRV(sv) &&
814 (SvTYPE(sv) == SVt_PVAV ||
815 SvTYPE(sv) == SVt_PVHV))
816 Perl_croak(aTHX_
817 "Self-ties of arrays and hashes are not supported");
68a4a7e4 818 sv_magic(varsv, sv, how, Nullch, 0);
a0d0e21e
LW		 819 }
820 LEAVE;
3280af22 821 SP = PL_stack_base + markoff;
a0d0e21e
LW		 822 PUSHs(sv);
823 RETURN;
824}
825
826PP(pp_untie)
827{
39644a26 828 dSP;
5b468f54 829 MAGIC *mg;
33c27489 830 SV *sv = POPs;
14befaf4
DM		 831 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
832 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 833
5b468f54
AMS		 834 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
835 RETPUSHYES;
836
837 if ((mg = SvTIED_mg(sv, how))) {
a29a5827
NIS		 838 SV *obj = SvRV(mg->mg_obj);
839 GV *gv;
840 CV *cv = NULL;
fa2b88e0
JS		 841 if (obj) {
842 if ((gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE)) &&
843 isGV(gv) && (cv = GvCV(gv))) {
844 PUSHMARK(SP);
845 XPUSHs(SvTIED_obj((SV*)gv, mg));
846 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
847 PUTBACK;
848 ENTER;
849 call_sv((SV *)cv, G_VOID);
850 LEAVE;
851 SPAGAIN;
852 }
853 else if (ckWARN(WARN_UNTIE)) {
854 if (mg && SvREFCNT(obj) > 1)
855 Perl_warner(aTHX_ WARN_UNTIE,
856 "untie attempted while %"UVuf" inner references still exist",
857 (UV)SvREFCNT(obj) - 1 ) ;
858 }
cbdc8872 859 }
fa2b88e0 860 sv_unmagic(sv, how) ;
cbdc8872 861 }
55497cff 862 RETPUSHYES;
a0d0e21e
LW		 863}
864
c07a80fd 865PP(pp_tied)
866{
39644a26 867 dSP;
5b468f54 868 MAGIC *mg;
33c27489 869 SV *sv = POPs;
14befaf4
DM		 870 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
871 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54
AMS		 872
873 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
874 RETPUSHUNDEF;
c07a80fd 875
155aba94 876 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 877 SV *osv = SvTIED_obj(sv, mg);
878 if (osv == mg->mg_obj)
879 osv = sv_mortalcopy(osv);
880 PUSHs(osv);
881 RETURN;
c07a80fd 882 }
c07a80fd 883 RETPUSHUNDEF;
884}
885
a0d0e21e
LW		 886PP(pp_dbmopen)
887{
39644a26 888 dSP;
a0d0e21e
LW		 889 HV *hv;
890 dPOPPOPssrl;
891 HV* stash;
892 GV *gv;
a0d0e21e
LW		 893 SV *sv;
894
895 hv = (HV*)POPs;
896
3280af22 897 sv = sv_mortalcopy(&PL_sv_no);
a0d0e21e
LW		 898 sv_setpv(sv, "AnyDBM_File");
899 stash = gv_stashsv(sv, FALSE);
8ebc5c01 900 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 901 PUTBACK;
864dbfa3 902 require_pv("AnyDBM_File.pm");
a0d0e21e 903 SPAGAIN;
8ebc5c01 904 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 905 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 906 }
907
57d3b86d 908 ENTER;
924508f0 909 PUSHMARK(SP);
6b05c17a 910
924508f0 911 EXTEND(SP, 5);
a0d0e21e
LW		 912 PUSHs(sv);
913 PUSHs(left);
914 if (SvIV(right))
b448e4fe 915 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
a0d0e21e 916 else
b448e4fe 917 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
a0d0e21e 918 PUSHs(right);
57d3b86d 919 PUTBACK;
864dbfa3 920 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 921 SPAGAIN;
922
923 if (!sv_isobject(TOPs)) {
924508f0
GS		 924 SP--;
925 PUSHMARK(SP);
a0d0e21e
LW		 926 PUSHs(sv);
927 PUSHs(left);
b448e4fe 928 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
a0d0e21e 929 PUSHs(right);
a0d0e21e 930 PUTBACK;
864dbfa3 931 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 932 SPAGAIN;
933 }
934
6b05c17a 935 if (sv_isobject(TOPs)) {
14befaf4
DM		 936 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
937 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, Nullch, 0);
6b05c17a 938 }
a0d0e21e
LW		 939 LEAVE;
940 RETURN;
941}
942
943PP(pp_dbmclose)
944{
cea2e8a9 945 return pp_untie();
a0d0e21e
LW		 946}
947
948PP(pp_sselect)
949{
a0d0e21e 950#ifdef HAS_SELECT
9cad6237 951 dSP; dTARGET;
a0d0e21e
LW		 952 register I32 i;
953 register I32 j;
954 register char *s;
955 register SV *sv;
65202027 956 NV value;
a0d0e21e
LW		 957 I32 maxlen = 0;
958 I32 nfound;
959 struct timeval timebuf;
960 struct timeval *tbuf = &timebuf;
961 I32 growsize;
962 char *fd_sets[4];
2d8e6c8d 963 STRLEN n_a;
a0d0e21e
LW		 964#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
965 I32 masksize;
966 I32 offset;
967 I32 k;
968
969# if BYTEORDER & 0xf0000
970# define ORDERBYTE (0x88888888 - BYTEORDER)
971# else
972# define ORDERBYTE (0x4444 - BYTEORDER)
973# endif
974
975#endif
976
977 SP -= 4;
978 for (i = 1; i <= 3; i++) {
979 if (!SvPOK(SP[i]))
980 continue;
981 j = SvCUR(SP[i]);
982 if (maxlen < j)
983 maxlen = j;
984 }
985
5ff3f7a4 986/* little endians can use vecs directly */
a0d0e21e 987#if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
5ff3f7a4 988# if SELECT_MIN_BITS > 1
f2da832e
JH		 989 /* If SELECT_MIN_BITS is greater than one we most probably will want
990 * to align the sizes with SELECT_MIN_BITS/8 because for example
991 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
f556e5b9 992 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
8f1f23e8 993 * on (sets/tests/clears bits) is 32 bits. */
f2da832e 994 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
5ff3f7a4 995# else
4633a7c4 996 growsize = sizeof(fd_set);
5ff3f7a4
GS		 997# endif
998# else
999# ifdef NFDBITS
a0d0e21e 1000
5ff3f7a4
GS		 1001# ifndef NBBY
1002# define NBBY 8
1003# endif
a0d0e21e
LW		 1004
1005 masksize = NFDBITS / NBBY;
5ff3f7a4 1006# else
a0d0e21e 1007 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1008# endif
a0d0e21e
LW		 1009 growsize = maxlen + (masksize - (maxlen % masksize));
1010 Zero(&fd_sets[0], 4, char*);
1011#endif
1012
1013 sv = SP[4];
1014 if (SvOK(sv)) {
1015 value = SvNV(sv);
1016 if (value < 0.0)
1017 value = 0.0;
1018 timebuf.tv_sec = (long)value;
65202027 1019 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1020 timebuf.tv_usec = (long)(value * 1000000.0);
1021 }
1022 else
1023 tbuf = Null(struct timeval*);
1024
1025 for (i = 1; i <= 3; i++) {
1026 sv = SP[i];
1027 if (!SvOK(sv)) {
1028 fd_sets[i] = 0;
1029 continue;
1030 }
1031 else if (!SvPOK(sv))
2d8e6c8d 1032 SvPV_force(sv,n_a); /* force string conversion */
a0d0e21e
LW		 1033 j = SvLEN(sv);
1034 if (j < growsize) {
1035 Sv_Grow(sv, growsize);
a0d0e21e 1036 }
c07a80fd 1037 j = SvCUR(sv);
1038 s = SvPVX(sv) + j;
1039 while (++j <= growsize) {
1040 *s++ = '\0';
1041 }
1042
a0d0e21e
LW		 1043#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1044 s = SvPVX(sv);
1045 New(403, fd_sets[i], growsize, char);
1046 for (offset = 0; offset < growsize; offset += masksize) {
1047 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1048 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1049 }
1050#else
1051 fd_sets[i] = SvPVX(sv);
1052#endif
1053 }
1054
6ad3d225 1055 nfound = PerlSock_select(
a0d0e21e
LW		 1056 maxlen * 8,
1057 (Select_fd_set_t) fd_sets[1],
1058 (Select_fd_set_t) fd_sets[2],
1059 (Select_fd_set_t) fd_sets[3],
1060 tbuf);
1061 for (i = 1; i <= 3; i++) {
1062 if (fd_sets[i]) {
1063 sv = SP[i];
1064#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1065 s = SvPVX(sv);
1066 for (offset = 0; offset < growsize; offset += masksize) {
1067 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1068 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1069 }
1070 Safefree(fd_sets[i]);
1071#endif
1072 SvSETMAGIC(sv);
1073 }
1074 }
1075
1076 PUSHi(nfound);
1077 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1078 value = (NV)(timebuf.tv_sec) +
1079 (NV)(timebuf.tv_usec) / 1000000.0;
3280af22 1080 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 1081 sv_setnv(sv, value);
1082 }
1083 RETURN;
1084#else
cea2e8a9 1085 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1086#endif
1087}
1088
4633a7c4 1089void
864dbfa3 1090Perl_setdefout(pTHX_ GV *gv)
4633a7c4
LW		 1091{
1092 if (gv)
1093 (void)SvREFCNT_inc(gv);
3280af22
NIS		 1094 if (PL_defoutgv)
1095 SvREFCNT_dec(PL_defoutgv);
1096 PL_defoutgv = gv;
4633a7c4
LW		 1097}
1098
a0d0e21e
LW		 1099PP(pp_select)
1100{
39644a26 1101 dSP; dTARGET;
4633a7c4
LW		 1102 GV *newdefout, *egv;
1103 HV *hv;
1104
533c011a 1105 newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
4633a7c4 1106
3280af22 1107 egv = GvEGV(PL_defoutgv);
4633a7c4 1108 if (!egv)
3280af22 1109 egv = PL_defoutgv;
4633a7c4
LW		 1110 hv = GvSTASH(egv);
1111 if (! hv)
3280af22 1112 XPUSHs(&PL_sv_undef);
4633a7c4 1113 else {
cbdc8872 1114 GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1115 if (gvp && *gvp == egv) {
f7aaccc2 1116 gv_efullname4(TARG, PL_defoutgv, Nullch, TRUE);
f86702cc 1117 XPUSHTARG;
1118 }
1119 else {
1120 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1121 }
4633a7c4
LW		 1122 }
1123
1124 if (newdefout) {
ded8aa31
GS		 1125 if (!GvIO(newdefout))
1126 gv_IOadd(newdefout);
4633a7c4
LW		 1127 setdefout(newdefout);
1128 }
1129
a0d0e21e
LW		 1130 RETURN;
1131}
1132
1133PP(pp_getc)
1134{
39644a26 1135 dSP; dTARGET;
a0d0e21e 1136 GV *gv;
5b468f54 1137 IO *io;
2ae324a7 1138 MAGIC *mg;
a0d0e21e 1139
32da55ab 1140 if (MAXARG == 0)
3280af22 1141 gv = PL_stdingv;
a0d0e21e
LW		 1142 else
1143 gv = (GV*)POPs;
2ae324a7 1144
5b468f54
AMS		 1145 if (gv && (io = GvIO(gv))
1146 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1147 {
54310121 1148 I32 gimme = GIMME_V;
2ae324a7 1149 PUSHMARK(SP);
5b468f54 1150 XPUSHs(SvTIED_obj((SV*)io, mg));
2ae324a7 1151 PUTBACK;
1152 ENTER;
864dbfa3 1153 call_method("GETC", gimme);
2ae324a7 1154 LEAVE;
1155 SPAGAIN;
54310121 1156 if (gimme == G_SCALAR)
1157 SvSetMagicSV_nosteal(TARG, TOPs);
2ae324a7 1158 RETURN;
1159 }
9bc64814 1160 if (!gv || do_eof(gv)) /* make sure we have fp with something */
a0d0e21e 1161 RETPUSHUNDEF;
bbce6d69 1162 TAINT;
a0d0e21e 1163 sv_setpv(TARG, " ");
9bc64814 1164 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1165 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1166 /* Find out how many bytes the char needs */
1167 Size_t len = UTF8SKIP(SvPVX(TARG));
1168 if (len > 1) {
1169 SvGROW(TARG,len+1);
1170 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1171 SvCUR_set(TARG,1+len);
1172 }
1173 SvUTF8_on(TARG);
1174 }
a0d0e21e
LW		 1175 PUSHTARG;
1176 RETURN;
1177}
1178
1179PP(pp_read)
1180{
cea2e8a9 1181 return pp_sysread();
a0d0e21e
LW		 1182}
1183
76e3520e 1184STATIC OP *
cea2e8a9 1185S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1186{
c09156bb 1187 register PERL_CONTEXT *cx;
54310121 1188 I32 gimme = GIMME_V;
a0d0e21e
LW		 1189 AV* padlist = CvPADLIST(cv);
1190 SV** svp = AvARRAY(padlist);
1191
1192 ENTER;
1193 SAVETMPS;
1194
1195 push_return(retop);
146174a9 1196 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
a0d0e21e 1197 PUSHFORMAT(cx);
146174a9 1198 SAVEVPTR(PL_curpad);
3280af22 1199 PL_curpad = AvARRAY((AV*)svp[1]);
a0d0e21e 1200
4633a7c4 1201 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1202 return CvSTART(cv);
1203}
1204
1205PP(pp_enterwrite)
1206{
39644a26 1207 dSP;
a0d0e21e
LW		 1208 register GV *gv;
1209 register IO *io;
1210 GV *fgv;
1211 CV *cv;
1212
1213 if (MAXARG == 0)
3280af22 1214 gv = PL_defoutgv;
a0d0e21e
LW		 1215 else {
1216 gv = (GV*)POPs;
1217 if (!gv)
3280af22 1218 gv = PL_defoutgv;
a0d0e21e
LW		 1219 }
1220 EXTEND(SP, 1);
1221 io = GvIO(gv);
1222 if (!io) {
1223 RETPUSHNO;
1224 }
1225 if (IoFMT_GV(io))
1226 fgv = IoFMT_GV(io);
1227 else
1228 fgv = gv;
1229
1230 cv = GvFORM(fgv);
a0d0e21e 1231 if (!cv) {
2dd78f96 1232 char *name = NULL;
a0d0e21e 1233 if (fgv) {
748a9306 1234 SV *tmpsv = sv_newmortal();
43693395 1235 gv_efullname4(tmpsv, fgv, Nullch, FALSE);
2dd78f96 1236 name = SvPV_nolen(tmpsv);
a0d0e21e 1237 }
2dd78f96
JH		 1238 if (name && *name)
1239 DIE(aTHX_ "Undefined format \"%s\" called", name);
cea2e8a9 1240 DIE(aTHX_ "Not a format reference");
a0d0e21e 1241 }
44a8e56a 1242 if (CvCLONE(cv))
1243 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1244
44a8e56a 1245 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1246 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1247}
1248
1249PP(pp_leavewrite)
1250{
39644a26 1251 dSP;
a0d0e21e
LW		 1252 GV *gv = cxstack[cxstack_ix].blk_sub.gv;
1253 register IO *io = GvIOp(gv);
760ac839
LW		 1254 PerlIO *ofp = IoOFP(io);
1255 PerlIO *fp;
a0d0e21e
LW		 1256 SV **newsp;
1257 I32 gimme;
c09156bb 1258 register PERL_CONTEXT *cx;
a0d0e21e 1259
760ac839 1260 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1261 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
7ef822cd
JH		 1262 if (!io || !ofp)
1263 goto forget_top;
3280af22
NIS		 1264 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1265 PL_formtarget != PL_toptarget)
a0d0e21e 1266 {
4633a7c4
LW		 1267 GV *fgv;
1268 CV *cv;
a0d0e21e
LW		 1269 if (!IoTOP_GV(io)) {
1270 GV *topgv;
46fc3d4c 1271 SV *topname;
a0d0e21e
LW		 1272
1273 if (!IoTOP_NAME(io)) {
1274 if (!IoFMT_NAME(io))
1275 IoFMT_NAME(io) = savepv(GvNAME(gv));
cea2e8a9 1276 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", IoFMT_NAME(io)));
46fc3d4c 1277 topgv = gv_fetchpv(SvPVX(topname), FALSE, SVt_PVFM);
748a9306 1278 if ((topgv && GvFORM(topgv)) ||
a0d0e21e 1279 !gv_fetchpv("top",FALSE,SVt_PVFM))
46fc3d4c 1280 IoTOP_NAME(io) = savepv(SvPVX(topname));
a0d0e21e
LW		 1281 else
1282 IoTOP_NAME(io) = savepv("top");
1283 }
1284 topgv = gv_fetchpv(IoTOP_NAME(io),FALSE, SVt_PVFM);
1285 if (!topgv || !GvFORM(topgv)) {
1286 IoLINES_LEFT(io) = 100000000;
1287 goto forget_top;
1288 }
1289 IoTOP_GV(io) = topgv;
1290 }
748a9306
LW		 1291 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1292 I32 lines = IoLINES_LEFT(io);
3280af22 1293 char *s = SvPVX(PL_formtarget);
8e07c86e
AD		 1294 if (lines <= 0) /* Yow, header didn't even fit!!! */
1295 goto forget_top;
748a9306
LW		 1296 while (lines-- > 0) {
1297 s = strchr(s, '\n');
1298 if (!s)
1299 break;
1300 s++;
1301 }
1302 if (s) {
d75029d0
NIS		 1303 STRLEN save = SvCUR(PL_formtarget);
1304 SvCUR_set(PL_formtarget, s - SvPVX(PL_formtarget));
1305 do_print(PL_formtarget, ofp);
1306 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1307 sv_chop(PL_formtarget, s);
1308 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1309 }
1310 }
a0d0e21e 1311 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1312 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1313 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1314 IoPAGE(io)++;
3280af22 1315 PL_formtarget = PL_toptarget;
748a9306 1316 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1317 fgv = IoTOP_GV(io);
1318 if (!fgv)
cea2e8a9 1319 DIE(aTHX_ "bad top format reference");
4633a7c4 1320 cv = GvFORM(fgv);
2dd78f96
JH		 1321 {
1322 char *name = NULL;
1323 if (!cv) {
1324 SV *sv = sv_newmortal();
1325 gv_efullname4(sv, fgv, Nullch, FALSE);
1326 name = SvPV_nolen(sv);
1327 }
1328 if (name && *name)
1329 DIE(aTHX_ "Undefined top format \"%s\" called",name);
1330 /* why no:
1331 else
1332 DIE(aTHX_ "Undefined top format called");
1333 ?*/
4633a7c4 1334 }
44a8e56a 1335 if (CvCLONE(cv))
1336 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
533c011a 1337 return doform(cv,gv,PL_op);
a0d0e21e
LW		 1338 }
1339
1340 forget_top:
3280af22 1341 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1342 POPFORMAT(cx);
1343 LEAVE;
1344
1345 fp = IoOFP(io);
1346 if (!fp) {
599cee73 1347 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
cb50131a 1348 if (IoIFP(io)) {
2dd78f96
JH		 1349 /* integrate with report_evil_fh()? */
1350 char *name = NULL;
1351 if (isGV(gv)) {
1352 SV* sv = sv_newmortal();
1353 gv_efullname4(sv, gv, Nullch, FALSE);
1354 name = SvPV_nolen(sv);
1355 }
1356 if (name && *name)
1357 Perl_warner(aTHX_ WARN_IO,
1358 "Filehandle %s opened only for input", name);
1359 else
1360 Perl_warner(aTHX_ WARN_IO,
1361 "Filehandle opened only for input");
cb50131a 1362 }
599cee73 1363 else if (ckWARN(WARN_CLOSED))
bc37a18f 1364 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1365 }
3280af22 1366 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1367 }
1368 else {
3280af22 1369 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1370 if (ckWARN(WARN_IO))
cea2e8a9 1371 Perl_warner(aTHX_ WARN_IO, "page overflow");
a0d0e21e 1372 }
d75029d0 1373 if (!do_print(PL_formtarget, fp))
3280af22 1374 PUSHs(&PL_sv_no);
a0d0e21e 1375 else {
3280af22
NIS		 1376 FmLINES(PL_formtarget) = 0;
1377 SvCUR_set(PL_formtarget, 0);
1378 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1379 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1380 (void)PerlIO_flush(fp);
3280af22 1381 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1382 }
1383 }
9cbac4c7 1384 /* bad_ofp: */
3280af22 1385 PL_formtarget = PL_bodytarget;
a0d0e21e
LW		 1386 PUTBACK;
1387 return pop_return();
1388}
1389
1390PP(pp_prtf)
1391{
39644a26 1392 dSP; dMARK; dORIGMARK;
a0d0e21e
LW		 1393 GV *gv;
1394 IO *io;
760ac839 1395 PerlIO *fp;
26db47c4 1396 SV *sv;
46fc3d4c 1397 MAGIC *mg;
a0d0e21e 1398
533c011a 1399 if (PL_op->op_flags & OPf_STACKED)
a0d0e21e
LW		 1400 gv = (GV*)*++MARK;
1401 else
3280af22 1402 gv = PL_defoutgv;
46fc3d4c 1403
5b468f54
AMS		 1404 if (gv && (io = GvIO(gv))
1405 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1406 {
46fc3d4c 1407 if (MARK == ORIGMARK) {
4352c267 1408 MEXTEND(SP, 1);
46fc3d4c 1409 ++MARK;
1410 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1411 ++SP;
1412 }
1413 PUSHMARK(MARK - 1);
5b468f54 1414 *MARK = SvTIED_obj((SV*)io, mg);
46fc3d4c 1415 PUTBACK;
1416 ENTER;
864dbfa3 1417 call_method("PRINTF", G_SCALAR);
46fc3d4c 1418 LEAVE;
1419 SPAGAIN;
1420 MARK = ORIGMARK + 1;
1421 *MARK = *SP;
1422 SP = MARK;
1423 RETURN;
1424 }
1425
26db47c4 1426 sv = NEWSV(0,0);
a0d0e21e 1427 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1428 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1429 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 1430 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 1431 goto just_say_no;
1432 }
1433 else if (!(fp = IoOFP(io))) {
599cee73 1434 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
2dd78f96 1435 /* integrate with report_evil_fh()? */
cb50131a 1436 if (IoIFP(io)) {
2dd78f96
JH		 1437 char *name = NULL;
1438 if (isGV(gv)) {
1439 gv_efullname4(sv, gv, Nullch, FALSE);
1440 name = SvPV_nolen(sv);
1441 }
1442 if (name && *name)
1443 Perl_warner(aTHX_ WARN_IO,
1444 "Filehandle %s opened only for input", name);
1445 else
1446 Perl_warner(aTHX_ WARN_IO,
1447 "Filehandle opened only for input");
cb50131a 1448 }
599cee73 1449 else if (ckWARN(WARN_CLOSED))
bc37a18f 1450 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1451 }
91487cfc 1452 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
a0d0e21e
LW		 1453 goto just_say_no;
1454 }
1455 else {
1456 do_sprintf(sv, SP - MARK, MARK + 1);
1457 if (!do_print(sv, fp))
1458 goto just_say_no;
1459
1460 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1461 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1462 goto just_say_no;
1463 }
1464 SvREFCNT_dec(sv);
1465 SP = ORIGMARK;
3280af22 1466 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1467 RETURN;
1468
1469 just_say_no:
1470 SvREFCNT_dec(sv);
1471 SP = ORIGMARK;
3280af22 1472 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1473 RETURN;
1474}
1475
c07a80fd 1476PP(pp_sysopen)
1477{
39644a26 1478 dSP;
c07a80fd 1479 GV *gv;
c07a80fd 1480 SV *sv;
1481 char *tmps;
1482 STRLEN len;
1483 int mode, perm;
1484
1485 if (MAXARG > 3)
1486 perm = POPi;
1487 else
1488 perm = 0666;
1489 mode = POPi;
1490 sv = POPs;
1491 gv = (GV *)POPs;
1492
4592e6ca
NIS		 1493 /* Need TIEHANDLE method ? */
1494
c07a80fd 1495 tmps = SvPV(sv, len);
1496 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1497 IoLINES(GvIOp(gv)) = 0;
3280af22 1498 PUSHs(&PL_sv_yes);
c07a80fd 1499 }
1500 else {
3280af22 1501 PUSHs(&PL_sv_undef);
c07a80fd 1502 }
1503 RETURN;
1504}
1505
a0d0e21e
LW		 1506PP(pp_sysread)
1507{
39644a26 1508 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1509 int offset;
1510 GV *gv;
1511 IO *io;
1512 char *buffer;
5b54f415 1513 SSize_t length;
eb5c063a 1514 SSize_t count;
1e422769 1515 Sock_size_t bufsize;
748a9306 1516 SV *bufsv;
a0d0e21e 1517 STRLEN blen;
2ae324a7 1518 MAGIC *mg;
eb5c063a
NIS		 1519 int fp_utf8;
1520 Size_t got = 0;
1521 Size_t wanted;
1d636c13 1522 bool charstart = FALSE;
87330c3c
JH		 1523 STRLEN charskip = 0;
1524 STRLEN skip = 0;
a0d0e21e
LW		 1525
1526 gv = (GV*)*++MARK;
5b468f54
AMS		 1527 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1528 && gv && (io = GvIO(gv))
1529 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
137443ea 1530 {
2ae324a7 1531 SV *sv;
1532
1533 PUSHMARK(MARK-1);
5b468f54 1534 *MARK = SvTIED_obj((SV*)io, mg);
2ae324a7 1535 ENTER;
864dbfa3 1536 call_method("READ", G_SCALAR);
2ae324a7 1537 LEAVE;
1538 SPAGAIN;
1539 sv = POPs;
1540 SP = ORIGMARK;
1541 PUSHs(sv);
1542 RETURN;
1543 }
1544
a0d0e21e
LW		 1545 if (!gv)
1546 goto say_undef;
748a9306 1547 bufsv = *++MARK;
ff68c719 1548 if (! SvOK(bufsv))
1549 sv_setpvn(bufsv, "", 0);
a0d0e21e 1550 length = SvIVx(*++MARK);
748a9306 1551 SETERRNO(0,0);
a0d0e21e
LW		 1552 if (MARK < SP)
1553 offset = SvIVx(*++MARK);
1554 else
1555 offset = 0;
1556 io = GvIO(gv);
1557 if (!io || !IoIFP(io))
1558 goto say_undef;
0064a8a9 1559 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1560 buffer = SvPVutf8_force(bufsv, blen);
eb5c063a
NIS		 1561 /* UTF8 may not have been set if they are all low bytes */
1562 SvUTF8_on(bufsv);
7d59b7e4
NIS		 1563 }
1564 else {
1565 buffer = SvPV_force(bufsv, blen);
1566 }
1567 if (length < 0)
1568 DIE(aTHX_ "Negative length");
eb5c063a 1569 wanted = length;
7d59b7e4 1570
d0965105
JH		 1571 charstart = TRUE;
1572 charskip = 0;
87330c3c 1573 skip = 0;
d0965105 1574
a0d0e21e 1575#ifdef HAS_SOCKET
533c011a 1576 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1577 char namebuf[MAXPATHLEN];
eec2d3df 1578#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE)
490ab354
JH		 1579 bufsize = sizeof (struct sockaddr_in);
1580#else
46fc3d4c 1581 bufsize = sizeof namebuf;
490ab354 1582#endif
abf95952
IZ		 1583#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1584 if (bufsize >= 256)
1585 bufsize = 255;
1586#endif
748a9306 1587 buffer = SvGROW(bufsv, length+1);
bbce6d69 1588 /* 'offset' means 'flags' here */
eb5c063a 1589 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
46fc3d4c 1590 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1591 if (count < 0)
a0d0e21e 1592 RETPUSHUNDEF;
4107cc59
OF		 1593#ifdef EPOC
1594 /* Bogus return without padding */
1595 bufsize = sizeof (struct sockaddr_in);
1596#endif
eb5c063a 1597 SvCUR_set(bufsv, count);
748a9306
LW		 1598 *SvEND(bufsv) = '\0';
1599 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1600 if (fp_utf8)
1601 SvUTF8_on(bufsv);
748a9306 1602 SvSETMAGIC(bufsv);
aac0dd9a 1603 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1604 if (!(IoFLAGS(io) & IOf_UNTAINT))
1605 SvTAINTED_on(bufsv);
a0d0e21e 1606 SP = ORIGMARK;
46fc3d4c 1607 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1608 PUSHs(TARG);
1609 RETURN;
1610 }
1611#else
911d147d 1612 if (PL_op->op_type == OP_RECV)
cea2e8a9 1613 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1614#endif
eb5c063a
NIS		 1615 if (DO_UTF8(bufsv)) {
1616 /* offset adjust in characters not bytes */
1617 blen = sv_len_utf8(bufsv);
7d59b7e4 1618 }
bbce6d69 1619 if (offset < 0) {
1620 if (-offset > blen)
cea2e8a9 1621 DIE(aTHX_ "Offset outside string");
bbce6d69 1622 offset += blen;
1623 }
eb5c063a
NIS		 1624 if (DO_UTF8(bufsv)) {
1625 /* convert offset-as-chars to offset-as-bytes */
1626 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1627 }
1628 more_bytes:
cd52b7b2 1629 bufsize = SvCUR(bufsv);
eb5c063a 1630 buffer = SvGROW(bufsv, length+offset+1);
cd52b7b2 1631 if (offset > bufsize) { /* Zero any newly allocated space */
1632 Zero(buffer+bufsize, offset-bufsize, char);
1633 }
eb5c063a
NIS		 1634 buffer = buffer + offset;
1635
533c011a 1636 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1637#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1638 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1639 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1640 buffer, length, 0);
a7092146
GS		 1641 }
1642 else
1643#endif
1644 {
eb5c063a
NIS		 1645 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1646 buffer, length);
a7092146 1647 }
a0d0e21e
LW		 1648 }
1649 else
1650#ifdef HAS_SOCKET__bad_code_maybe
50952442 1651 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1652 char namebuf[MAXPATHLEN];
490ab354
JH		 1653#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1654 bufsize = sizeof (struct sockaddr_in);
1655#else
46fc3d4c 1656 bufsize = sizeof namebuf;
490ab354 1657#endif
eb5c063a 1658 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1659 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1660 }
1661 else
1662#endif
3b02c43c 1663 {
eb5c063a
NIS		 1664 count = PerlIO_read(IoIFP(io), buffer, length);
1665 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1666 if (count == 0 && PerlIO_error(IoIFP(io)))
1667 count = -1;
3b02c43c 1668 }
eb5c063a 1669 if (count < 0) {
a00b5bd3 1670 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
af8c498a 1671 {
2dd78f96
JH		 1672 /* integrate with report_evil_fh()? */
1673 char *name = NULL;
1674 if (isGV(gv)) {
1675 SV* sv = sv_newmortal();
1676 gv_efullname4(sv, gv, Nullch, FALSE);
1677 name = SvPV_nolen(sv);
1678 }
1679 if (name && *name)
1680 Perl_warner(aTHX_ WARN_IO,
1681 "Filehandle %s opened only for output", name);
1682 else
1683 Perl_warner(aTHX_ WARN_IO,
1684 "Filehandle opened only for output");
af8c498a 1685 }
a0d0e21e 1686 goto say_undef;
af8c498a 1687 }
eb5c063a 1688 SvCUR_set(bufsv, count+(buffer - SvPVX(bufsv)));
748a9306
LW		 1689 *SvEND(bufsv) = '\0';
1690 (void)SvPOK_only(bufsv);
0064a8a9 1691 if (fp_utf8 && !IN_BYTES) {
eb5c063a
NIS		 1692 /* Look at utf8 we got back and count the characters */
1693 char *bend = buffer + count;
1694 while (buffer < bend) {
d0965105
JH		 1695 if (charstart) {
1696 skip = UTF8SKIP(buffer);
1697 charskip = 0;
1698 }
1699 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1700 /* partial character - try for rest of it */
1701 length = skip - (bend-buffer);
1702 offset = bend - SvPVX(bufsv);
d0965105
JH		 1703 charstart = FALSE;
1704 charskip += count;
eb5c063a
NIS		 1705 goto more_bytes;
1706 }
1707 else {
1708 got++;
1709 buffer += skip;
d0965105
JH		 1710 charstart = TRUE;
1711 charskip = 0;
eb5c063a
NIS		 1712 }
1713 }
1714 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1715 provided amount read (count) was what was requested (length)
1716 */
1717 if (got < wanted && count == length) {
d0965105 1718 length = wanted - got;
eb5c063a
NIS		 1719 offset = bend - SvPVX(bufsv);
1720 goto more_bytes;
1721 }
1722 /* return value is character count */
1723 count = got;
1724 SvUTF8_on(bufsv);
1725 }
748a9306 1726 SvSETMAGIC(bufsv);
aac0dd9a 1727 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1728 if (!(IoFLAGS(io) & IOf_UNTAINT))
1729 SvTAINTED_on(bufsv);
a0d0e21e 1730 SP = ORIGMARK;
eb5c063a 1731 PUSHi(count);
a0d0e21e
LW		 1732 RETURN;
1733
1734 say_undef:
1735 SP = ORIGMARK;
1736 RETPUSHUNDEF;
1737}
1738
1739PP(pp_syswrite)
1740{
39644a26 1741 dSP;
092bebab
JH		 1742 int items = (SP - PL_stack_base) - TOPMARK;
1743 if (items == 2) {
9f089d78 1744 SV *sv;
092bebab 1745 EXTEND(SP, 1);
9f089d78
SB		 1746 sv = sv_2mortal(newSViv(sv_len(*SP)));
1747 PUSHs(sv);
092bebab
JH		 1748 PUTBACK;
1749 }
cea2e8a9 1750 return pp_send();
a0d0e21e
LW		 1751}
1752
1753PP(pp_send)
1754{
39644a26 1755 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1756 GV *gv;
1757 IO *io;
748a9306 1758 SV *bufsv;
a0d0e21e 1759 char *buffer;
8c99d73e
GS		 1760 Size_t length;
1761 SSize_t retval;
a0d0e21e 1762 STRLEN blen;
1d603a67 1763 MAGIC *mg;
a0d0e21e
LW		 1764
1765 gv = (GV*)*++MARK;
14befaf4 1766 if (PL_op->op_type == OP_SYSWRITE
5b468f54
AMS		 1767 && gv && (io = GvIO(gv))
1768 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
14befaf4 1769 {
1d603a67
GB		 1770 SV *sv;
1771
1772 PUSHMARK(MARK-1);
5b468f54 1773 *MARK = SvTIED_obj((SV*)io, mg);
1d603a67 1774 ENTER;
864dbfa3 1775 call_method("WRITE", G_SCALAR);
1d603a67
GB		 1776 LEAVE;
1777 SPAGAIN;
1778 sv = POPs;
1779 SP = ORIGMARK;
1780 PUSHs(sv);
1781 RETURN;
1782 }
a0d0e21e
LW		 1783 if (!gv)
1784 goto say_undef;
748a9306 1785 bufsv = *++MARK;
8c99d73e 1786#if Size_t_size > IVSIZE
3c001241 1787 length = (Size_t)SvNVx(*++MARK);
146174a9 1788#else
3c001241 1789 length = (Size_t)SvIVx(*++MARK);
146174a9 1790#endif
3c001241 1791 if ((SSize_t)length < 0)
cea2e8a9 1792 DIE(aTHX_ "Negative length");
748a9306 1793 SETERRNO(0,0);
a0d0e21e
LW		 1794 io = GvIO(gv);
1795 if (!io || !IoIFP(io)) {
8c99d73e 1796 retval = -1;
bc37a18f
RG		 1797 if (ckWARN(WARN_CLOSED))
1798 report_evil_fh(gv, io, PL_op->op_type);
7d59b7e4
NIS		 1799 goto say_undef;
1800 }
1801
1802 if (PerlIO_isutf8(IoIFP(io))) {
1803 buffer = SvPVutf8(bufsv, blen);
a0d0e21e 1804 }
7d59b7e4
NIS		 1805 else {
1806 if (DO_UTF8(bufsv))
1807 sv_utf8_downgrade(bufsv, FALSE);
1808 buffer = SvPV(bufsv, blen);
1809 }
1810
1811 if (PL_op->op_type == OP_SYSWRITE) {
1812 IV offset;
1813 if (DO_UTF8(bufsv)) {
1814 /* length and offset are in chars */
1815 blen = sv_len_utf8(bufsv);
1816 }
bbce6d69 1817 if (MARK < SP) {
a0d0e21e 1818 offset = SvIVx(*++MARK);
bbce6d69 1819 if (offset < 0) {
1820 if (-offset > blen)
cea2e8a9 1821 DIE(aTHX_ "Offset outside string");
bbce6d69 1822 offset += blen;
fb73857a 1823 } else if (offset >= blen && blen > 0)
cea2e8a9 1824 DIE(aTHX_ "Offset outside string");
bbce6d69 1825 } else
a0d0e21e
LW		 1826 offset = 0;
1827 if (length > blen - offset)
1828 length = blen - offset;
7d59b7e4 1829 if (DO_UTF8(bufsv)) {
c8d31a35 1830 buffer = (char*)utf8_hop((U8 *)buffer, offset);
7d59b7e4
NIS		 1831 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1832 }
1833 else {
1834 buffer = buffer+offset;
1835 }
a7092146 1836#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1837 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1838 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1839 buffer, length, 0);
a7092146
GS		 1840 }
1841 else
1842#endif
1843 {
94e4c244 1844 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1845 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1846 buffer, length);
a7092146 1847 }
a0d0e21e
LW		 1848 }
1849#ifdef HAS_SOCKET
1850 else if (SP > MARK) {
1851 char *sockbuf;
1852 STRLEN mlen;
1853 sockbuf = SvPVx(*++MARK, mlen);
7d59b7e4 1854 /* length is really flags */
8c99d73e
GS		 1855 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1856 length, (struct sockaddr *)sockbuf, mlen);
a0d0e21e
LW		 1857 }
1858 else
7d59b7e4 1859 /* length is really flags */
8c99d73e 1860 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
a0d0e21e
LW		 1861#else
1862 else
cea2e8a9 1863 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1864#endif
8c99d73e 1865 if (retval < 0)
a0d0e21e
LW		 1866 goto say_undef;
1867 SP = ORIGMARK;
f36eea10
JH		 1868 if (DO_UTF8(bufsv))
1869 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
8c99d73e
GS		 1870#if Size_t_size > IVSIZE
1871 PUSHn(retval);
1872#else
1873 PUSHi(retval);
1874#endif
a0d0e21e
LW		 1875 RETURN;
1876
1877 say_undef:
1878 SP = ORIGMARK;
1879 RETPUSHUNDEF;
1880}
1881
1882PP(pp_recv)
1883{
cea2e8a9 1884 return pp_sysread();
a0d0e21e
LW		 1885}
1886
1887PP(pp_eof)
1888{
39644a26 1889 dSP;
a0d0e21e 1890 GV *gv;
5b468f54 1891 IO *io;
4592e6ca 1892 MAGIC *mg;
a0d0e21e 1893
32da55ab 1894 if (MAXARG == 0) {
146174a9
CB		 1895 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1896 IO *io;
1897 gv = PL_last_in_gv = PL_argvgv;
1898 io = GvIO(gv);
1899 if (io && !IoIFP(io)) {
1900 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1901 IoLINES(io) = 0;
1902 IoFLAGS(io) &= ~IOf_START;
1903 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
1904 sv_setpvn(GvSV(gv), "-", 1);
1905 SvSETMAGIC(GvSV(gv));
1906 }
1907 else if (!nextargv(gv))
1908 RETPUSHYES;
1909 }
1910 }
1911 else
1912 gv = PL_last_in_gv; /* eof */
1913 }
a0d0e21e 1914 else
146174a9 1915 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 1916
5b468f54
AMS		 1917 if (gv && (io = GvIO(gv))
1918 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1919 {
4592e6ca 1920 PUSHMARK(SP);
5b468f54 1921 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1922 PUTBACK;
1923 ENTER;
864dbfa3 1924 call_method("EOF", G_SCALAR);
4592e6ca
NIS		 1925 LEAVE;
1926 SPAGAIN;
1927 RETURN;
1928 }
1929
54310121 1930 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 1931 RETURN;
1932}
1933
1934PP(pp_tell)
1935{
39644a26 1936 dSP; dTARGET;
301e8125 1937 GV *gv;
5b468f54 1938 IO *io;
4592e6ca 1939 MAGIC *mg;
a0d0e21e 1940
32da55ab 1941 if (MAXARG == 0)
3280af22 1942 gv = PL_last_in_gv;
a0d0e21e 1943 else
3280af22 1944 gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 1945
5b468f54
AMS		 1946 if (gv && (io = GvIO(gv))
1947 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1948 {
4592e6ca 1949 PUSHMARK(SP);
5b468f54 1950 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1951 PUTBACK;
1952 ENTER;
864dbfa3 1953 call_method("TELL", G_SCALAR);
4592e6ca
NIS		 1954 LEAVE;
1955 SPAGAIN;
1956 RETURN;
1957 }
1958
146174a9
CB		 1959#if LSEEKSIZE > IVSIZE
1960 PUSHn( do_tell(gv) );
1961#else
a0d0e21e 1962 PUSHi( do_tell(gv) );
146174a9 1963#endif
a0d0e21e
LW		 1964 RETURN;
1965}
1966
1967PP(pp_seek)
1968{
cea2e8a9 1969 return pp_sysseek();
137443ea 1970}
1971
1972PP(pp_sysseek)
1973{
39644a26 1974 dSP;
a0d0e21e 1975 GV *gv;
5b468f54 1976 IO *io;
a0d0e21e 1977 int whence = POPi;
146174a9
CB		 1978#if LSEEKSIZE > IVSIZE
1979 Off_t offset = (Off_t)SvNVx(POPs);
1980#else
d9b3e12d 1981 Off_t offset = (Off_t)SvIVx(POPs);
146174a9 1982#endif
4592e6ca 1983 MAGIC *mg;
a0d0e21e 1984
3280af22 1985 gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 1986
5b468f54
AMS		 1987 if (gv && (io = GvIO(gv))
1988 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1989 {
4592e6ca 1990 PUSHMARK(SP);
5b468f54 1991 XPUSHs(SvTIED_obj((SV*)io, mg));
cb50131a
CB		 1992#if LSEEKSIZE > IVSIZE
1993 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
1994#else
b448e4fe 1995 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 1996#endif
b448e4fe 1997 XPUSHs(sv_2mortal(newSViv(whence)));
4592e6ca
NIS		 1998 PUTBACK;
1999 ENTER;
864dbfa3 2000 call_method("SEEK", G_SCALAR);
4592e6ca
NIS		 2001 LEAVE;
2002 SPAGAIN;
2003 RETURN;
2004 }
2005
533c011a 2006 if (PL_op->op_type == OP_SEEK)
8903cb82 2007 PUSHs(boolSV(do_seek(gv, offset, whence)));
2008 else {
b448e4fe
JH		 2009 Off_t sought = do_sysseek(gv, offset, whence);
2010 if (sought < 0)
146174a9
CB		 2011 PUSHs(&PL_sv_undef);
2012 else {
b448e4fe 2013 SV* sv = sought ?
146174a9 2014#if LSEEKSIZE > IVSIZE
b448e4fe 2015 newSVnv((NV)sought)
146174a9 2016#else
b448e4fe 2017 newSViv(sought)
146174a9
CB		 2018#endif
2019 : newSVpvn(zero_but_true, ZBTLEN);
2020 PUSHs(sv_2mortal(sv));
2021 }
8903cb82 2022 }
a0d0e21e
LW		 2023 RETURN;
2024}
2025
2026PP(pp_truncate)
2027{
39644a26 2028 dSP;
8c99d73e
GS		 2029 /* There seems to be no consensus on the length type of truncate()
2030 * and ftruncate(), both off_t and size_t have supporters. In
2031 * general one would think that when using large files, off_t is
2032 * at least as wide as size_t, so using an off_t should be okay. */
2033 /* XXX Configure probe for the length type of *truncate() needed XXX */
2034 Off_t len;
a0d0e21e 2035
8c99d73e
GS		 2036#if Size_t_size > IVSIZE
2037 len = (Off_t)POPn;
2038#else
2039 len = (Off_t)POPi;
2040#endif
2041 /* Checking for length < 0 is problematic as the type might or
301e8125 2042 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2043 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2044 SETERRNO(0,0);
5d94fbed 2045#if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) || defined(F_FREESP)
d05c1ba0
JH		 2046 {
2047 STRLEN n_a;
2048 int result = 1;
2049 GV *tmpgv;
2050
2051 if (PL_op->op_flags & OPf_SPECIAL) {
2052 tmpgv = gv_fetchpv(POPpx, FALSE, SVt_PVIO);
2053
2054 do_ftruncate:
2055 TAINT_PROPER("truncate");
2056 if (!GvIO(tmpgv) || !IoIFP(GvIOp(tmpgv)))
2057 result = 0;
2058 else {
2059 PerlIO_flush(IoIFP(GvIOp(tmpgv)));
cbdc8872 2060#ifdef HAS_TRUNCATE
d05c1ba0 2061 if (ftruncate(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
301e8125 2062#else
d05c1ba0 2063 if (my_chsize(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
cbdc8872 2064#endif
d05c1ba0
JH		 2065 result = 0;
2066 }
cbdc8872 2067 }
d05c1ba0
JH		 2068 else {
2069 SV *sv = POPs;
2070 char *name;
72f496dc 2071
d05c1ba0
JH		 2072 if (SvTYPE(sv) == SVt_PVGV) {
2073 tmpgv = (GV*)sv; /* *main::FRED for example */
2074 goto do_ftruncate;
2075 }
2076 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2077 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2078 goto do_ftruncate;
2079 }
1e422769 2080
d05c1ba0
JH		 2081 name = SvPV(sv, n_a);
2082 TAINT_PROPER("truncate");
cbdc8872 2083#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2084 if (truncate(name, len) < 0)
2085 result = 0;
cbdc8872 2086#else
d05c1ba0
JH		 2087 {
2088 int tmpfd;
2089
2090 if ((tmpfd = PerlLIO_open(name, O_RDWR)) < 0)
cbdc8872 2091 result = 0;
d05c1ba0
JH		 2092 else {
2093 if (my_chsize(tmpfd, len) < 0)
2094 result = 0;
2095 PerlLIO_close(tmpfd);
2096 }
cbdc8872 2097 }
a0d0e21e 2098#endif
d05c1ba0 2099 }
a0d0e21e 2100
d05c1ba0
JH		 2101 if (result)
2102 RETPUSHYES;
2103 if (!errno)
91487cfc 2104 SETERRNO(EBADF,RMS$_IFI);
d05c1ba0
JH		 2105 RETPUSHUNDEF;
2106 }
a0d0e21e 2107#else
cea2e8a9 2108 DIE(aTHX_ "truncate not implemented");
a0d0e21e
LW		 2109#endif
2110}
2111
2112PP(pp_fcntl)
2113{
cea2e8a9 2114 return pp_ioctl();
a0d0e21e
LW		 2115}
2116
2117PP(pp_ioctl)
2118{
39644a26 2119 dSP; dTARGET;
748a9306 2120 SV *argsv = POPs;
3bb7c1b4 2121 unsigned int func = POPu;
533c011a 2122 int optype = PL_op->op_type;
a0d0e21e 2123 char *s;
324aa91a 2124 IV retval;
a0d0e21e 2125 GV *gv = (GV*)POPs;
c289d2f7 2126 IO *io = gv ? GvIOn(gv) : 0;
a0d0e21e 2127
748a9306 2128 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2129 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2130 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2131 SETERRNO(EBADF,RMS$_IFI); /* well, sort of... */
a0d0e21e
LW		 2132 RETPUSHUNDEF;
2133 }
2134
748a9306 2135 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2136 STRLEN len;
324aa91a 2137 STRLEN need;
748a9306 2138 s = SvPV_force(argsv, len);
324aa91a
HF		 2139 need = IOCPARM_LEN(func);
2140 if (len < need) {
2141 s = Sv_Grow(argsv, need + 1);
2142 SvCUR_set(argsv, need);
a0d0e21e
LW		 2143 }
2144
748a9306 2145 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2146 }
2147 else {
748a9306 2148 retval = SvIV(argsv);
c529f79d 2149 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2150 }
2151
2152 TAINT_PROPER(optype == OP_IOCTL ? "ioctl" : "fcntl");
2153
2154 if (optype == OP_IOCTL)
2155#ifdef HAS_IOCTL
76e3520e 2156 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2157#else
cea2e8a9 2158 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2159#endif
2160 else
55497cff 2161#ifdef HAS_FCNTL
2162#if defined(OS2) && defined(__EMX__)
760ac839 2163 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2164#else
760ac839 2165 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2166#endif
55497cff 2167#else
cea2e8a9 2168 DIE(aTHX_ "fcntl is not implemented");
a0d0e21e
LW		 2169#endif
2170
748a9306
LW		 2171 if (SvPOK(argsv)) {
2172 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2173 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2174 OP_NAME(PL_op));
748a9306
LW		 2175 s[SvCUR(argsv)] = 0; /* put our null back */
2176 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2177 }
2178
2179 if (retval == -1)
2180 RETPUSHUNDEF;
2181 if (retval != 0) {
2182 PUSHi(retval);
2183 }
2184 else {
8903cb82 2185 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e
LW		 2186 }
2187 RETURN;
2188}
2189
2190PP(pp_flock)
2191{
9cad6237 2192#ifdef FLOCK
39644a26 2193 dSP; dTARGET;
a0d0e21e
LW		 2194 I32 value;
2195 int argtype;
2196 GV *gv;
bc37a18f 2197 IO *io = NULL;
760ac839 2198 PerlIO *fp;
16d20bd9 2199
a0d0e21e 2200 argtype = POPi;
32da55ab 2201 if (MAXARG == 0)
3280af22 2202 gv = PL_last_in_gv;
a0d0e21e
LW		 2203 else
2204 gv = (GV*)POPs;
bc37a18f
RG		 2205 if (gv && (io = GvIO(gv)))
2206 fp = IoIFP(io);
2207 else {
a0d0e21e 2208 fp = Nullfp;
bc37a18f
RG		 2209 io = NULL;
2210 }
a0d0e21e 2211 if (fp) {
68dc0745 2212 (void)PerlIO_flush(fp);
76e3520e 2213 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2214 }
cb50131a 2215 else {
bc37a18f
RG		 2216 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2217 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2218 value = 0;
91487cfc 2219 SETERRNO(EBADF,RMS$_IFI);
cb50131a 2220 }
a0d0e21e
LW		 2221 PUSHi(value);
2222 RETURN;
2223#else
cea2e8a9 2224 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2225#endif
2226}
2227
2228/* Sockets. */
2229
2230PP(pp_socket)
2231{
a0d0e21e 2232#ifdef HAS_SOCKET
9cad6237 2233 dSP;
a0d0e21e
LW		 2234 GV *gv;
2235 register IO *io;
2236 int protocol = POPi;
2237 int type = POPi;
2238 int domain = POPi;
2239 int fd;
2240
2241 gv = (GV*)POPs;
c289d2f7 2242 io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2243
c289d2f7
JH		 2244 if (!gv || !io) {
2245 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2246 report_evil_fh(gv, io, PL_op->op_type);
2247 if (IoIFP(io))
2248 do_close(gv, FALSE);
91487cfc 2249 SETERRNO(EBADF,LIB$_INVARG);
a0d0e21e
LW		 2250 RETPUSHUNDEF;
2251 }
2252
57171420
BS		 2253 if (IoIFP(io))
2254 do_close(gv, FALSE);
2255
a0d0e21e 2256 TAINT_PROPER("socket");
6ad3d225 2257 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2258 if (fd < 0)
2259 RETPUSHUNDEF;
760ac839
LW		 2260 IoIFP(io) = PerlIO_fdopen(fd, "r"); /* stdio gets confused about sockets */
2261 IoOFP(io) = PerlIO_fdopen(fd, "w");
50952442 2262 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2263 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2264 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2265 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2266 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2267 RETPUSHUNDEF;
2268 }
8d2a6795
GS		 2269#if defined(HAS_FCNTL) && defined(F_SETFD)
2270 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2271#endif
a0d0e21e 2272
d5ff79b3
OF		 2273#ifdef EPOC
2274 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2275#endif
2276
a0d0e21e
LW		 2277 RETPUSHYES;
2278#else
cea2e8a9 2279 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2280#endif
2281}
2282
2283PP(pp_sockpair)
2284{
6a655055 2285#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM))
76ffd3b9 2286 dSP;
a0d0e21e
LW		 2287 GV *gv1;
2288 GV *gv2;
2289 register IO *io1;
2290 register IO *io2;
2291 int protocol = POPi;
2292 int type = POPi;
2293 int domain = POPi;
2294 int fd[2];
2295
2296 gv2 = (GV*)POPs;
2297 gv1 = (GV*)POPs;
c289d2f7
JH		 2298 io1 = gv1 ? GvIOn(gv1) : NULL;
2299 io2 = gv2 ? GvIOn(gv2) : NULL;
2300 if (!gv1 || !gv2 || !io1 || !io2) {
2301 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2302 if (!gv1 || !io1)
2303 report_evil_fh(gv1, io1, PL_op->op_type);
2304 if (!gv2 || !io2)
2305 report_evil_fh(gv1, io2, PL_op->op_type);
2306 }
2307 if (IoIFP(io1))
2308 do_close(gv1, FALSE);
2309 if (IoIFP(io2))
2310 do_close(gv2, FALSE);
a0d0e21e 2311 RETPUSHUNDEF;
c289d2f7 2312 }
a0d0e21e 2313
dc0d0a5f
JH		 2314 if (IoIFP(io1))
2315 do_close(gv1, FALSE);
2316 if (IoIFP(io2))
2317 do_close(gv2, FALSE);
57171420 2318
a0d0e21e 2319 TAINT_PROPER("socketpair");
6ad3d225 2320 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2321 RETPUSHUNDEF;
760ac839
LW		 2322 IoIFP(io1) = PerlIO_fdopen(fd[0], "r");
2323 IoOFP(io1) = PerlIO_fdopen(fd[0], "w");
50952442 2324 IoTYPE(io1) = IoTYPE_SOCKET;
760ac839
LW		 2325 IoIFP(io2) = PerlIO_fdopen(fd[1], "r");
2326 IoOFP(io2) = PerlIO_fdopen(fd[1], "w");
50952442 2327 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2328 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2329 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2330 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2331 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2332 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2333 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2334 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2335 RETPUSHUNDEF;
2336 }
8d2a6795
GS		 2337#if defined(HAS_FCNTL) && defined(F_SETFD)
2338 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2339 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2340#endif
a0d0e21e
LW		 2341
2342 RETPUSHYES;
2343#else
cea2e8a9 2344 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2345#endif
2346}
2347
2348PP(pp_bind)
2349{
a0d0e21e 2350#ifdef HAS_SOCKET
9cad6237 2351 dSP;
eec2d3df 2352#ifdef MPE /* Requires PRIV mode to bind() to ports < 1024 */
82b3da69
JH		 2353 extern void GETPRIVMODE();
2354 extern void GETUSERMODE();
eec2d3df 2355#endif
748a9306 2356 SV *addrsv = POPs;
a0d0e21e
LW		 2357 char *addr;
2358 GV *gv = (GV*)POPs;
2359 register IO *io = GvIOn(gv);
2360 STRLEN len;
eec2d3df
GS		 2361 int bind_ok = 0;
2362#ifdef MPE
2363 int mpeprivmode = 0;
2364#endif
a0d0e21e
LW		 2365
2366 if (!io || !IoIFP(io))
2367 goto nuts;
2368
748a9306 2369 addr = SvPV(addrsv, len);
a0d0e21e 2370 TAINT_PROPER("bind");
eec2d3df
GS		 2371#ifdef MPE /* Deal with MPE bind() peculiarities */
2372 if (((struct sockaddr *)addr)->sa_family == AF_INET) {
2373 /* The address *MUST* stupidly be zero. */
2374 ((struct sockaddr_in *)addr)->sin_addr.s_addr = INADDR_ANY;
2375 /* PRIV mode is required to bind() to ports < 1024. */
2376 if (((struct sockaddr_in *)addr)->sin_port < 1024 &&
2377 ((struct sockaddr_in *)addr)->sin_port > 0) {
2378 GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
2379 mpeprivmode = 1;
2380 }
2381 }
2382#endif /* MPE */
2383 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2384 (struct sockaddr *)addr, len) >= 0)
2385 bind_ok = 1;
2386
2387#ifdef MPE /* Switch back to USER mode */
2388 if (mpeprivmode)
2389 GETUSERMODE();
2390#endif /* MPE */
2391
2392 if (bind_ok)
a0d0e21e
LW		 2393 RETPUSHYES;
2394 else
2395 RETPUSHUNDEF;
2396
2397nuts:
599cee73 2398 if (ckWARN(WARN_CLOSED))
bc37a18f 2399 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2400 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2401 RETPUSHUNDEF;
2402#else
cea2e8a9 2403 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2404#endif
2405}
2406
2407PP(pp_connect)
2408{
a0d0e21e 2409#ifdef HAS_SOCKET
9cad6237 2410 dSP;
748a9306 2411 SV *addrsv = POPs;
a0d0e21e
LW		 2412 char *addr;
2413 GV *gv = (GV*)POPs;
2414 register IO *io = GvIOn(gv);
2415 STRLEN len;
2416
2417 if (!io || !IoIFP(io))
2418 goto nuts;
2419
748a9306 2420 addr = SvPV(addrsv, len);
a0d0e21e 2421 TAINT_PROPER("connect");
6ad3d225 2422 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2423 RETPUSHYES;
2424 else
2425 RETPUSHUNDEF;
2426
2427nuts:
599cee73 2428 if (ckWARN(WARN_CLOSED))
bc37a18f 2429 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2430 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2431 RETPUSHUNDEF;
2432#else
cea2e8a9 2433 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2434#endif
2435}
2436
2437PP(pp_listen)
2438{
a0d0e21e 2439#ifdef HAS_SOCKET
9cad6237 2440 dSP;
a0d0e21e
LW		 2441 int backlog = POPi;
2442 GV *gv = (GV*)POPs;
c289d2f7 2443 register IO *io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2444
c289d2f7 2445 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2446 goto nuts;
2447
6ad3d225 2448 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2449 RETPUSHYES;
2450 else
2451 RETPUSHUNDEF;
2452
2453nuts:
599cee73 2454 if (ckWARN(WARN_CLOSED))
bc37a18f 2455 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2456 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2457 RETPUSHUNDEF;
2458#else
cea2e8a9 2459 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2460#endif
2461}
2462
2463PP(pp_accept)
2464{
a0d0e21e 2465#ifdef HAS_SOCKET
9cad6237 2466 dSP; dTARGET;
a0d0e21e
LW		 2467 GV *ngv;
2468 GV *ggv;
2469 register IO *nstio;
2470 register IO *gstio;
4633a7c4 2471 struct sockaddr saddr; /* use a struct to avoid alignment problems */
1e422769 2472 Sock_size_t len = sizeof saddr;
a0d0e21e 2473 int fd;
72f496dc 2474 int fd2;
a0d0e21e
LW		 2475
2476 ggv = (GV*)POPs;
2477 ngv = (GV*)POPs;
2478
2479 if (!ngv)
2480 goto badexit;
2481 if (!ggv)
2482 goto nuts;
2483
2484 gstio = GvIO(ggv);
2485 if (!gstio || !IoIFP(gstio))
2486 goto nuts;
2487
2488 nstio = GvIOn(ngv);
6ad3d225 2489 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *)&saddr, &len);
a0d0e21e
LW		 2490 if (fd < 0)
2491 goto badexit;
a70048fb
AB		 2492 if (IoIFP(nstio))
2493 do_close(ngv, FALSE);
760ac839 2494 IoIFP(nstio) = PerlIO_fdopen(fd, "r");
72f496dc
NIS		 2495 /* FIXME: we dup(fd) here so that refcounting of fd's does not inhibit
2496 fclose of IoOFP's FILE * - and hence leak memory.
2497 Special treatment of _this_ case of IoIFP != IoOFP seems wrong.
2498 */
2499 IoOFP(nstio) = PerlIO_fdopen(fd2 = PerlLIO_dup(fd), "w");
50952442 2500 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2501 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2502 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2503 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2504 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2505 goto badexit;
2506 }
8d2a6795
GS		 2507#if defined(HAS_FCNTL) && defined(F_SETFD)
2508 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
72f496dc 2509 fcntl(fd2, F_SETFD, fd2 > PL_maxsysfd); /* ensure close-on-exec */
8d2a6795 2510#endif
a0d0e21e 2511
ed79a026 2512#ifdef EPOC
a9f1f6b0
OF		 2513 len = sizeof saddr; /* EPOC somehow truncates info */
2514 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026
OF		 2515#endif
2516
748a9306 2517 PUSHp((char *)&saddr, len);
a0d0e21e
LW		 2518 RETURN;
2519
2520nuts:
599cee73 2521 if (ckWARN(WARN_CLOSED))
bc37a18f 2522 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
91487cfc 2523 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2524
2525badexit:
2526 RETPUSHUNDEF;
2527
2528#else
cea2e8a9 2529 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2530#endif
2531}
2532
2533PP(pp_shutdown)
2534{
a0d0e21e 2535#ifdef HAS_SOCKET
9cad6237 2536 dSP; dTARGET;
a0d0e21e
LW		 2537 int how = POPi;
2538 GV *gv = (GV*)POPs;
2539 register IO *io = GvIOn(gv);
2540
2541 if (!io || !IoIFP(io))
2542 goto nuts;
2543
6ad3d225 2544 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2545 RETURN;
2546
2547nuts:
599cee73 2548 if (ckWARN(WARN_CLOSED))
bc37a18f 2549 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2550 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2551 RETPUSHUNDEF;
2552#else
cea2e8a9 2553 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2554#endif
2555}
2556
2557PP(pp_gsockopt)
2558{
2559#ifdef HAS_SOCKET
cea2e8a9 2560 return pp_ssockopt();
a0d0e21e 2561#else
cea2e8a9 2562 DIE(aTHX_ PL_no_sock_func, "getsockopt");
a0d0e21e
LW		 2563#endif
2564}
2565
2566PP(pp_ssockopt)
2567{
a0d0e21e 2568#ifdef HAS_SOCKET
9cad6237 2569 dSP;
533c011a 2570 int optype = PL_op->op_type;
a0d0e21e
LW		 2571 SV *sv;
2572 int fd;
2573 unsigned int optname;
2574 unsigned int lvl;
2575 GV *gv;
2576 register IO *io;
1e422769 2577 Sock_size_t len;
a0d0e21e
LW		 2578
2579 if (optype == OP_GSOCKOPT)
2580 sv = sv_2mortal(NEWSV(22, 257));
2581 else
2582 sv = POPs;
2583 optname = (unsigned int) POPi;
2584 lvl = (unsigned int) POPi;
2585
2586 gv = (GV*)POPs;
2587 io = GvIOn(gv);
2588 if (!io || !IoIFP(io))
2589 goto nuts;
2590
760ac839 2591 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2592 switch (optype) {
2593 case OP_GSOCKOPT:
748a9306 2594 SvGROW(sv, 257);
a0d0e21e 2595 (void)SvPOK_only(sv);
748a9306
LW		 2596 SvCUR_set(sv,256);
2597 *SvEND(sv) ='\0';
1e422769 2598 len = SvCUR(sv);
6ad3d225 2599 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2600 goto nuts2;
1e422769 2601 SvCUR_set(sv, len);
748a9306 2602 *SvEND(sv) ='\0';
a0d0e21e
LW		 2603 PUSHs(sv);
2604 break;
2605 case OP_SSOCKOPT: {
1e422769 2606 char *buf;
2607 int aint;
2608 if (SvPOKp(sv)) {
2d8e6c8d
GS		 2609 STRLEN l;
2610 buf = SvPV(sv, l);
2611 len = l;
1e422769 2612 }
56ee1660 2613 else {
a0d0e21e
LW		 2614 aint = (int)SvIV(sv);
2615 buf = (char*)&aint;
2616 len = sizeof(int);
2617 }
6ad3d225 2618 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2619 goto nuts2;
3280af22 2620 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2621 }
2622 break;
2623 }
2624 RETURN;
2625
2626nuts:
599cee73 2627 if (ckWARN(WARN_CLOSED))
bc37a18f 2628 report_evil_fh(gv, io, optype);
91487cfc 2629 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2630nuts2:
2631 RETPUSHUNDEF;
2632
2633#else
cea2e8a9 2634 DIE(aTHX_ PL_no_sock_func, "setsockopt");
a0d0e21e
LW		 2635#endif
2636}
2637
2638PP(pp_getsockname)
2639{
2640#ifdef HAS_SOCKET
cea2e8a9 2641 return pp_getpeername();
a0d0e21e 2642#else
cea2e8a9 2643 DIE(aTHX_ PL_no_sock_func, "getsockname");
a0d0e21e
LW		 2644#endif
2645}
2646
2647PP(pp_getpeername)
2648{
a0d0e21e 2649#ifdef HAS_SOCKET
9cad6237 2650 dSP;
533c011a 2651 int optype = PL_op->op_type;
a0d0e21e
LW		 2652 SV *sv;
2653 int fd;
2654 GV *gv = (GV*)POPs;
2655 register IO *io = GvIOn(gv);
1e422769 2656 Sock_size_t len;
a0d0e21e
LW		 2657
2658 if (!io || !IoIFP(io))
2659 goto nuts;
2660
2661 sv = sv_2mortal(NEWSV(22, 257));
748a9306 2662 (void)SvPOK_only(sv);
1e422769 2663 len = 256;
2664 SvCUR_set(sv, len);
748a9306 2665 *SvEND(sv) ='\0';
760ac839 2666 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2667 switch (optype) {
2668 case OP_GETSOCKNAME:
6ad3d225 2669 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2670 goto nuts2;
2671 break;
2672 case OP_GETPEERNAME:
6ad3d225 2673 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2674 goto nuts2;
490ab354
JH		 2675#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2676 {
2677 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";
2678 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2679 if (((struct sockaddr *)SvPVX(sv))->sa_family == AF_INET &&
2680 !memcmp((char *)SvPVX(sv) + sizeof(u_short), nowhere,
2681 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2682 goto nuts2;
490ab354
JH		 2683 }
2684 }
2685#endif
a0d0e21e
LW		 2686 break;
2687 }
13826f2c
CS		 2688#ifdef BOGUS_GETNAME_RETURN
2689 /* Interactive Unix, getpeername() and getsockname()
2690 does not return valid namelen */
1e422769 2691 if (len == BOGUS_GETNAME_RETURN)
2692 len = sizeof(struct sockaddr);
13826f2c 2693#endif
1e422769 2694 SvCUR_set(sv, len);
748a9306 2695 *SvEND(sv) ='\0';
a0d0e21e
LW		 2696 PUSHs(sv);
2697 RETURN;
2698
2699nuts:
599cee73 2700 if (ckWARN(WARN_CLOSED))
bc37a18f 2701 report_evil_fh(gv, io, optype);
91487cfc 2702 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2703nuts2:
2704 RETPUSHUNDEF;
2705
2706#else
cea2e8a9 2707 DIE(aTHX_ PL_no_sock_func, "getpeername");
a0d0e21e
LW		 2708#endif
2709}
2710
2711/* Stat calls. */
2712
2713PP(pp_lstat)
2714{
cea2e8a9 2715 return pp_stat();
a0d0e21e
LW		 2716}
2717
2718PP(pp_stat)
2719{
39644a26 2720 dSP;
2dd78f96 2721 GV *gv;
54310121 2722 I32 gimme;
a0d0e21e 2723 I32 max = 13;
2d8e6c8d 2724 STRLEN n_a;
a0d0e21e 2725
533c011a 2726 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2727 gv = cGVOP_gv;
8a4e5b40 2728 if (PL_op->op_type == OP_LSTAT) {
3db621ff
RGS		 2729 if (gv != PL_defgv)
2730 Perl_croak(aTHX_ "You can't use lstat() on a filehandle");
8a4e5b40
DD		 2731 if (PL_laststype != OP_LSTAT)
2732 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2733 }
2734
748a9306 2735 do_fstat:
2dd78f96 2736 if (gv != PL_defgv) {
3280af22 2737 PL_laststype = OP_STAT;
2dd78f96 2738 PL_statgv = gv;
3280af22 2739 sv_setpv(PL_statname, "");
2dd78f96
JH		 2740 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2741 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
a0d0e21e 2742 }
9ddeeac9 2743 if (PL_laststatval < 0) {
2dd78f96
JH		 2744 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2745 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2746 max = 0;
9ddeeac9 2747 }
a0d0e21e
LW		 2748 }
2749 else {
748a9306
LW		 2750 SV* sv = POPs;
2751 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2752 gv = (GV*)sv;
748a9306
LW		 2753 goto do_fstat;
2754 }
2755 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 2756 gv = (GV*)SvRV(sv);
748a9306
LW		 2757 goto do_fstat;
2758 }
2d8e6c8d 2759 sv_setpv(PL_statname, SvPV(sv,n_a));
3280af22 2760 PL_statgv = Nullgv;
a0d0e21e 2761#ifdef HAS_LSTAT
533c011a
NIS		 2762 PL_laststype = PL_op->op_type;
2763 if (PL_op->op_type == OP_LSTAT)
2d8e6c8d 2764 PL_laststatval = PerlLIO_lstat(SvPV(PL_statname, n_a), &PL_statcache);
a0d0e21e
LW		 2765 else
2766#endif
2d8e6c8d 2767 PL_laststatval = PerlLIO_stat(SvPV(PL_statname, n_a), &PL_statcache);
3280af22 2768 if (PL_laststatval < 0) {
2d8e6c8d 2769 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(PL_statname, n_a), '\n'))
cea2e8a9 2770 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
a0d0e21e
LW		 2771 max = 0;
2772 }
2773 }
2774
54310121 2775 gimme = GIMME_V;
2776 if (gimme != G_ARRAY) {
2777 if (gimme != G_VOID)
2778 XPUSHs(boolSV(max));
2779 RETURN;
a0d0e21e
LW		 2780 }
2781 if (max) {
36477c24 2782 EXTEND(SP, max);
2783 EXTEND_MORTAL(max);
1ff81528
PL		 2784 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2785 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2786 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2787 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2788#if Uid_t_size > IVSIZE
2789 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2790#else
23dcd6c8 2791# if Uid_t_sign <= 0
1ff81528 2792 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2793# else
2794 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2795# endif
146174a9 2796#endif
301e8125 2797#if Gid_t_size > IVSIZE
146174a9
CB		 2798 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2799#else
23dcd6c8 2800# if Gid_t_sign <= 0
1ff81528 2801 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2802# else
2803 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2804# endif
146174a9 2805#endif
cbdc8872 2806#ifdef USE_STAT_RDEV
1ff81528 2807 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2808#else
79cb57f6 2809 PUSHs(sv_2mortal(newSVpvn("", 0)));
cbdc8872 2810#endif
146174a9
CB		 2811#if Off_t_size > IVSIZE
2812 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_size)));
2813#else
1ff81528 2814 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2815#endif
cbdc8872 2816#ifdef BIG_TIME
172ae379
JH		 2817 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2818 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2819 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2820#else
1ff81528
PL		 2821 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2822 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2823 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
cbdc8872 2824#endif
a0d0e21e 2825#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2826 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2827 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2828#else
79cb57f6
GS		 2829 PUSHs(sv_2mortal(newSVpvn("", 0)));
2830 PUSHs(sv_2mortal(newSVpvn("", 0)));
a0d0e21e
LW		 2831#endif
2832 }
2833 RETURN;
2834}
2835
2836PP(pp_ftrread)
2837{
9cad6237 2838 I32 result;
2a3ff820 2839 dSP;
5ff3f7a4 2840#if defined(HAS_ACCESS) && defined(R_OK)
2d8e6c8d 2841 STRLEN n_a;
5ff3f7a4 2842 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2843 result = access(TOPpx, R_OK);
5ff3f7a4
GS		 2844 if (result == 0)
2845 RETPUSHYES;
2846 if (result < 0)
2847 RETPUSHUNDEF;
2848 RETPUSHNO;
22865c03
GS		 2849 }
2850 else
cea2e8a9 2851 result = my_stat();
5ff3f7a4 2852#else
cea2e8a9 2853 result = my_stat();
5ff3f7a4 2854#endif
22865c03 2855 SPAGAIN;
a0d0e21e
LW		 2856 if (result < 0)
2857 RETPUSHUNDEF;
3280af22 2858 if (cando(S_IRUSR, 0, &PL_statcache))
a0d0e21e
LW		 2859 RETPUSHYES;
2860 RETPUSHNO;
2861}
2862
2863PP(pp_ftrwrite)
2864{
9cad6237 2865 I32 result;
2a3ff820 2866 dSP;
5ff3f7a4 2867#if defined(HAS_ACCESS) && defined(W_OK)
2d8e6c8d 2868 STRLEN n_a;
5ff3f7a4 2869 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2870 result = access(TOPpx, W_OK);
5ff3f7a4
GS		 2871 if (result == 0)
2872 RETPUSHYES;
2873 if (result < 0)
2874 RETPUSHUNDEF;
2875 RETPUSHNO;
22865c03
GS		 2876 }
2877 else
cea2e8a9 2878 result = my_stat();
5ff3f7a4 2879#else
cea2e8a9 2880 result = my_stat();
5ff3f7a4 2881#endif
22865c03 2882 SPAGAIN;
a0d0e21e
LW		 2883 if (result < 0)
2884 RETPUSHUNDEF;
3280af22 2885 if (cando(S_IWUSR, 0, &PL_statcache))
a0d0e21e
LW		 2886 RETPUSHYES;
2887 RETPUSHNO;
2888}
2889
2890PP(pp_ftrexec)
2891{
9cad6237 2892 I32 result;
2a3ff820 2893 dSP;
5ff3f7a4 2894#if defined(HAS_ACCESS) && defined(X_OK)
2d8e6c8d 2895 STRLEN n_a;
5ff3f7a4 2896 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2897 result = access(TOPpx, X_OK);
5ff3f7a4
GS		 2898 if (result == 0)
2899 RETPUSHYES;
2900 if (result < 0)
2901 RETPUSHUNDEF;
2902 RETPUSHNO;
22865c03
GS		 2903 }
2904 else
cea2e8a9 2905 result = my_stat();
5ff3f7a4 2906#else
cea2e8a9 2907 result = my_stat();
5ff3f7a4 2908#endif
22865c03 2909 SPAGAIN;
a0d0e21e
LW		 2910 if (result < 0)
2911 RETPUSHUNDEF;
3280af22 2912 if (cando(S_IXUSR, 0, &PL_statcache))
a0d0e21e
LW		 2913 RETPUSHYES;
2914 RETPUSHNO;
2915}
2916
2917PP(pp_fteread)
2918{
9cad6237 2919 I32 result;
2a3ff820 2920 dSP;
5ff3f7a4 2921#ifdef PERL_EFF_ACCESS_R_OK
2d8e6c8d 2922 STRLEN n_a;
5ff3f7a4 2923 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2924 result = PERL_EFF_ACCESS_R_OK(TOPpx);
5ff3f7a4
GS		 2925 if (result == 0)
2926 RETPUSHYES;
2927 if (result < 0)
2928 RETPUSHUNDEF;
2929 RETPUSHNO;
22865c03
GS		 2930 }
2931 else
cea2e8a9 2932 result = my_stat();
5ff3f7a4 2933#else
cea2e8a9 2934 result = my_stat();
5ff3f7a4 2935#endif
22865c03 2936 SPAGAIN;
a0d0e21e
LW		 2937 if (result < 0)
2938 RETPUSHUNDEF;
3280af22 2939 if (cando(S_IRUSR, 1, &PL_statcache))
a0d0e21e
LW		 2940 RETPUSHYES;
2941 RETPUSHNO;
2942}
2943
2944PP(pp_ftewrite)
2945{
9cad6237 2946 I32 result;
2a3ff820 2947 dSP;
5ff3f7a4 2948#ifdef PERL_EFF_ACCESS_W_OK
2d8e6c8d 2949 STRLEN n_a;
5ff3f7a4 2950 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2951 result = PERL_EFF_ACCESS_W_OK(TOPpx);
5ff3f7a4
GS		 2952 if (result == 0)
2953 RETPUSHYES;
2954 if (result < 0)
2955 RETPUSHUNDEF;
2956 RETPUSHNO;
22865c03
GS		 2957 }
2958 else
cea2e8a9 2959 result = my_stat();
5ff3f7a4 2960#else
cea2e8a9 2961 result = my_stat();
5ff3f7a4 2962#endif
22865c03 2963 SPAGAIN;
a0d0e21e
LW		 2964 if (result < 0)
2965 RETPUSHUNDEF;
3280af22 2966 if (cando(S_IWUSR, 1, &PL_statcache))
a0d0e21e
LW		 2967 RETPUSHYES;
2968 RETPUSHNO;
2969}
2970
2971PP(pp_fteexec)
2972{
9cad6237 2973 I32 result;
2a3ff820 2974 dSP;
5ff3f7a4 2975#ifdef PERL_EFF_ACCESS_X_OK
2d8e6c8d 2976 STRLEN n_a;
5ff3f7a4 2977 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2978 result = PERL_EFF_ACCESS_X_OK(TOPpx);
5ff3f7a4
GS		 2979 if (result == 0)
2980 RETPUSHYES;
2981 if (result < 0)
2982 RETPUSHUNDEF;
2983 RETPUSHNO;
22865c03
GS		 2984 }
2985 else
cea2e8a9 2986 result = my_stat();
5ff3f7a4 2987#else
cea2e8a9 2988 result = my_stat();
5ff3f7a4 2989#endif
22865c03 2990 SPAGAIN;
a0d0e21e
LW		 2991 if (result < 0)
2992 RETPUSHUNDEF;
3280af22 2993 if (cando(S_IXUSR, 1, &PL_statcache))
a0d0e21e
LW		 2994 RETPUSHYES;
2995 RETPUSHNO;
2996}
2997
2998PP(pp_ftis)
2999{
9cad6237 3000 I32 result = my_stat();
2a3ff820 3001 dSP;
a0d0e21e
LW		 3002 if (result < 0)
3003 RETPUSHUNDEF;
3004 RETPUSHYES;
3005}
3006
3007PP(pp_fteowned)
3008{
cea2e8a9 3009 return pp_ftrowned();
a0d0e21e
LW		 3010}
3011
3012PP(pp_ftrowned)
3013{
9cad6237 3014 I32 result = my_stat();
2a3ff820 3015 dSP;
a0d0e21e
LW		 3016 if (result < 0)
3017 RETPUSHUNDEF;
146174a9
CB		 3018 if (PL_statcache.st_uid == (PL_op->op_type == OP_FTEOWNED ?
3019 PL_euid : PL_uid) )
a0d0e21e
LW		 3020 RETPUSHYES;
3021 RETPUSHNO;
3022}
3023
3024PP(pp_ftzero)
3025{
9cad6237 3026 I32 result = my_stat();
2a3ff820 3027 dSP;
a0d0e21e
LW		 3028 if (result < 0)
3029 RETPUSHUNDEF;
146174a9 3030 if (PL_statcache.st_size == 0)
a0d0e21e
LW		 3031 RETPUSHYES;
3032 RETPUSHNO;
3033}
3034
3035PP(pp_ftsize)
3036{
9cad6237 3037 I32 result = my_stat();
2a3ff820 3038 dSP; dTARGET;
a0d0e21e
LW		 3039 if (result < 0)
3040 RETPUSHUNDEF;
146174a9
CB		 3041#if Off_t_size > IVSIZE
3042 PUSHn(PL_statcache.st_size);
3043#else
3280af22 3044 PUSHi(PL_statcache.st_size);
146174a9 3045#endif
a0d0e21e
LW		 3046 RETURN;
3047}
3048
3049PP(pp_ftmtime)
3050{
9cad6237 3051 I32 result = my_stat();
2a3ff820 3052 dSP; dTARGET;
a0d0e21e
LW		 3053 if (result < 0)
3054 RETPUSHUNDEF;
c6419e06 3055 PUSHn( (PL_basetime - PL_statcache.st_mtime) / 86400.0 );
a0d0e21e
LW		 3056 RETURN;
3057}
3058
3059PP(pp_ftatime)
3060{
9cad6237 3061 I32 result = my_stat();
2a3ff820 3062 dSP; dTARGET;
a0d0e21e
LW		 3063 if (result < 0)
3064 RETPUSHUNDEF;
c6419e06 3065 PUSHn( (PL_basetime - PL_statcache.st_atime) / 86400.0 );
a0d0e21e
LW		 3066 RETURN;
3067}
3068
3069PP(pp_ftctime)
3070{
9cad6237 3071 I32 result = my_stat();
2a3ff820 3072 dSP; dTARGET;
a0d0e21e
LW		 3073 if (result < 0)
3074 RETPUSHUNDEF;
c6419e06 3075 PUSHn( (PL_basetime - PL_statcache.st_ctime) / 86400.0 );
a0d0e21e
LW		 3076 RETURN;
3077}
3078
3079PP(pp_ftsock)
3080{
9cad6237 3081 I32 result = my_stat();
2a3ff820 3082 dSP;
a0d0e21e
LW		 3083 if (result < 0)
3084 RETPUSHUNDEF;
3280af22 3085 if (S_ISSOCK(PL_statcache.st_mode))
a0d0e21e
LW		 3086 RETPUSHYES;
3087 RETPUSHNO;
3088}
3089
3090PP(pp_ftchr)
3091{
9cad6237 3092 I32 result = my_stat();
2a3ff820 3093 dSP;
a0d0e21e
LW		 3094 if (result < 0)
3095 RETPUSHUNDEF;
3280af22 3096 if (S_ISCHR(PL_statcache.st_mode))
a0d0e21e
LW		 3097 RETPUSHYES;
3098 RETPUSHNO;
3099}
3100
3101PP(pp_ftblk)
3102{
9cad6237 3103 I32 result = my_stat();
2a3ff820 3104 dSP;
a0d0e21e
LW		 3105 if (result < 0)
3106 RETPUSHUNDEF;
3280af22 3107 if (S_ISBLK(PL_statcache.st_mode))
a0d0e21e
LW		 3108 RETPUSHYES;
3109 RETPUSHNO;
3110}
3111
3112PP(pp_ftfile)
3113{
9cad6237 3114 I32 result = my_stat();
2a3ff820 3115 dSP;
a0d0e21e
LW		 3116 if (result < 0)
3117 RETPUSHUNDEF;
3280af22 3118 if (S_ISREG(PL_statcache.st_mode))
a0d0e21e
LW		 3119 RETPUSHYES;
3120 RETPUSHNO;
3121}
3122
3123PP(pp_ftdir)
3124{
9cad6237 3125 I32 result = my_stat();
2a3ff820 3126 dSP;
a0d0e21e
LW		 3127 if (result < 0)
3128 RETPUSHUNDEF;
3280af22 3129 if (S_ISDIR(PL_statcache.st_mode))
a0d0e21e
LW		 3130 RETPUSHYES;
3131 RETPUSHNO;
3132}
3133
3134PP(pp_ftpipe)
3135{
9cad6237 3136 I32 result = my_stat();
2a3ff820 3137 dSP;
a0d0e21e
LW		 3138 if (result < 0)
3139 RETPUSHUNDEF;
3280af22 3140 if (S_ISFIFO(PL_statcache.st_mode))
a0d0e21e
LW		 3141 RETPUSHYES;
3142 RETPUSHNO;
3143}
3144
3145PP(pp_ftlink)
3146{
9cad6237 3147 I32 result = my_lstat();
2a3ff820 3148 dSP;
a0d0e21e
LW		 3149 if (result < 0)
3150 RETPUSHUNDEF;
3280af22 3151 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e
LW		 3152 RETPUSHYES;
3153 RETPUSHNO;
3154}
3155
3156PP(pp_ftsuid)
3157{
39644a26 3158 dSP;
a0d0e21e 3159#ifdef S_ISUID
cea2e8a9 3160 I32 result = my_stat();
a0d0e21e
LW		 3161 SPAGAIN;
3162 if (result < 0)
3163 RETPUSHUNDEF;
3280af22 3164 if (PL_statcache.st_mode & S_ISUID)
a0d0e21e
LW		 3165 RETPUSHYES;
3166#endif
3167 RETPUSHNO;
3168}
3169
3170PP(pp_ftsgid)
3171{
39644a26 3172 dSP;
a0d0e21e 3173#ifdef S_ISGID
cea2e8a9 3174 I32 result = my_stat();
a0d0e21e
LW		 3175 SPAGAIN;
3176 if (result < 0)
3177 RETPUSHUNDEF;
3280af22 3178 if (PL_statcache.st_mode & S_ISGID)
a0d0e21e
LW		 3179 RETPUSHYES;
3180#endif
3181 RETPUSHNO;
3182}
3183
3184PP(pp_ftsvtx)
3185{
39644a26 3186 dSP;
a0d0e21e 3187#ifdef S_ISVTX
cea2e8a9 3188 I32 result = my_stat();
a0d0e21e
LW		 3189 SPAGAIN;
3190 if (result < 0)
3191 RETPUSHUNDEF;
3280af22 3192 if (PL_statcache.st_mode & S_ISVTX)
a0d0e21e
LW		 3193 RETPUSHYES;
3194#endif
3195 RETPUSHNO;
3196}
3197
3198PP(pp_fttty)
3199{
39644a26 3200 dSP;
a0d0e21e
LW		 3201 int fd;
3202 GV *gv;
fb73857a 3203 char *tmps = Nullch;
2d8e6c8d 3204 STRLEN n_a;
fb73857a 3205
533c011a 3206 if (PL_op->op_flags & OPf_REF)
146174a9 3207 gv = cGVOP_gv;
fb73857a 3208 else if (isGV(TOPs))
3209 gv = (GV*)POPs;
3210 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3211 gv = (GV*)SvRV(POPs);
a0d0e21e 3212 else
2d8e6c8d 3213 gv = gv_fetchpv(tmps = POPpx, FALSE, SVt_PVIO);
fb73857a 3214
a0d0e21e 3215 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3216 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
fb73857a 3217 else if (tmps && isDIGIT(*tmps))
a0d0e21e
LW		 3218 fd = atoi(tmps);
3219 else
3220 RETPUSHUNDEF;
6ad3d225 3221 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3222 RETPUSHYES;
3223 RETPUSHNO;
3224}
3225
16d20bd9
AD		 3226#if defined(atarist) /* this will work with atariST. Configure will
3227 make guesses for other systems. */
3228# define FILE_base(f) ((f)->_base)
3229# define FILE_ptr(f) ((f)->_ptr)
3230# define FILE_cnt(f) ((f)->_cnt)
3231# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3232#endif
3233
3234PP(pp_fttext)
3235{
39644a26 3236 dSP;
a0d0e21e
LW		 3237 I32 i;
3238 I32 len;
3239 I32 odd = 0;
3240 STDCHAR tbuf[512];
3241 register STDCHAR *s;
3242 register IO *io;
5f05dabc 3243 register SV *sv;
3244 GV *gv;
2d8e6c8d 3245 STRLEN n_a;
146174a9 3246 PerlIO *fp;
a0d0e21e 3247
533c011a 3248 if (PL_op->op_flags & OPf_REF)
146174a9 3249 gv = cGVOP_gv;
5f05dabc 3250 else if (isGV(TOPs))
3251 gv = (GV*)POPs;
3252 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3253 gv = (GV*)SvRV(POPs);
3254 else
3255 gv = Nullgv;
3256
3257 if (gv) {
a0d0e21e 3258 EXTEND(SP, 1);
3280af22
NIS		 3259 if (gv == PL_defgv) {
3260 if (PL_statgv)
3261 io = GvIO(PL_statgv);
a0d0e21e 3262 else {
3280af22 3263 sv = PL_statname;
a0d0e21e
LW		 3264 goto really_filename;
3265 }
3266 }
3267 else {
3280af22
NIS		 3268 PL_statgv = gv;
3269 PL_laststatval = -1;
3270 sv_setpv(PL_statname, "");
3271 io = GvIO(PL_statgv);
a0d0e21e
LW		 3272 }
3273 if (io && IoIFP(io)) {
5f05dabc 3274 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3275 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3276 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3277 if (PL_laststatval < 0)
5f05dabc 3278 RETPUSHUNDEF;
9cbac4c7 3279 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3280 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3281 RETPUSHNO;
3282 else
3283 RETPUSHYES;
9cbac4c7 3284 }
a20bf0c3 3285 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3286 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3287 if (i != EOF)
760ac839 3288 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3289 }
a20bf0c3 3290 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3291 RETPUSHYES;
a20bf0c3
JH		 3292 len = PerlIO_get_bufsiz(IoIFP(io));
3293 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3294 /* sfio can have large buffers - limit to 512 */
3295 if (len > 512)
3296 len = 512;
a0d0e21e
LW		 3297 }
3298 else {
2dd78f96 3299 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3300 gv = cGVOP_gv;
2dd78f96 3301 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3302 }
91487cfc 3303 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 3304 RETPUSHUNDEF;
3305 }
3306 }
3307 else {
3308 sv = POPs;
5f05dabc 3309 really_filename:
3280af22
NIS		 3310 PL_statgv = Nullgv;
3311 PL_laststatval = -1;
5c9aa243 3312 PL_laststype = OP_STAT;
2d8e6c8d 3313 sv_setpv(PL_statname, SvPV(sv, n_a));
146174a9 3314 if (!(fp = PerlIO_open(SvPVX(PL_statname), "r"))) {
2d8e6c8d 3315 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
cea2e8a9 3316 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
a0d0e21e
LW		 3317 RETPUSHUNDEF;
3318 }
146174a9
CB		 3319 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3320 if (PL_laststatval < 0) {
3321 (void)PerlIO_close(fp);
5f05dabc 3322 RETPUSHUNDEF;
146174a9 3323 }
60382766 3324 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
146174a9
CB		 3325 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3326 (void)PerlIO_close(fp);
a0d0e21e 3327 if (len <= 0) {
533c011a 3328 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3329 RETPUSHNO; /* special case NFS directories */
3330 RETPUSHYES; /* null file is anything */
3331 }
3332 s = tbuf;
3333 }
3334
3335 /* now scan s to look for textiness */
4633a7c4 3336 /* XXX ASCII dependent code */
a0d0e21e 3337
146174a9
CB		 3338#if defined(DOSISH) || defined(USEMYBINMODE)
3339 /* ignore trailing ^Z on short files */
3340 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3341 --len;
3342#endif
3343
a0d0e21e
LW		 3344 for (i = 0; i < len; i++, s++) {
3345 if (!*s) { /* null never allowed in text */
3346 odd += len;
3347 break;
3348 }
9d116dd7 3349#ifdef EBCDIC
301e8125 3350 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3351 odd++;
3352#else
146174a9
CB		 3353 else if (*s & 128) {
3354#ifdef USE_LOCALE
2de3dbcc 3355 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3356 continue;
3357#endif
3358 /* utf8 characters don't count as odd */
fd400ab9 3359 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3360 int ulen = UTF8SKIP(s);
3361 if (ulen < len - i) {
3362 int j;
3363 for (j = 1; j < ulen; j++) {
fd400ab9 3364 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3365 goto not_utf8;
3366 }
3367 --ulen; /* loop does extra increment */
3368 s += ulen;
3369 i += ulen;
3370 continue;
3371 }
3372 }
3373 not_utf8:
3374 odd++;
146174a9 3375 }
a0d0e21e
LW		 3376 else if (*s < 32 &&
3377 *s != '\n' && *s != '\r' && *s != '\b' &&
3378 *s != '\t' && *s != '\f' && *s != 27)
3379 odd++;
9d116dd7 3380#endif
a0d0e21e
LW		 3381 }
3382
533c011a 3383 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3384 RETPUSHNO;
3385 else
3386 RETPUSHYES;
3387}
3388
3389PP(pp_ftbinary)
3390{
cea2e8a9 3391 return pp_fttext();
a0d0e21e
LW		 3392}
3393
3394/* File calls. */
3395
3396PP(pp_chdir)
3397{
39644a26 3398 dSP; dTARGET;
a0d0e21e
LW		 3399 char *tmps;
3400 SV **svp;
2d8e6c8d 3401 STRLEN n_a;
a0d0e21e 3402
35ae6b54
MS		 3403 if( MAXARG == 1 )
3404 tmps = POPpx;
3405 else
3406 tmps = 0;
3407
3408 if( !tmps || !*tmps ) {
3409 if ( (svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE))
3410 || (svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE))
491527d0 3411#ifdef VMS
35ae6b54 3412 || (svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE))
491527d0 3413#endif
35ae6b54
MS		 3414 )
3415 {
3416 if( MAXARG == 1 )
3417 deprecate("chdir('') or chdir(undef) as chdir()");
3418 tmps = SvPV(*svp, n_a);
3419 }
72f496dc 3420 else {
389ec635 3421 PUSHi(0);
b7ab37f8 3422 TAINT_PROPER("chdir");
389ec635
MS		 3423 RETURN;
3424 }
8ea155d1 3425 }
8ea155d1 3426
a0d0e21e 3427 TAINT_PROPER("chdir");
6ad3d225 3428 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3429#ifdef VMS
3430 /* Clear the DEFAULT element of ENV so we'll get the new value
3431 * in the future. */
6b88bc9c 3432 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3433#endif
a0d0e21e
LW		 3434 RETURN;
3435}
3436
3437PP(pp_chown)
3438{
a0d0e21e 3439#ifdef HAS_CHOWN
76ffd3b9
IZ		 3440 dSP; dMARK; dTARGET;
3441 I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3442
a0d0e21e
LW		 3443 SP = MARK;
3444 PUSHi(value);
3445 RETURN;
3446#else
0322a713 3447 DIE(aTHX_ PL_no_func, "chown");
a0d0e21e
LW		 3448#endif
3449}
3450
3451PP(pp_chroot)
3452{
a0d0e21e 3453#ifdef HAS_CHROOT
76ffd3b9 3454 dSP; dTARGET;
2d8e6c8d 3455 STRLEN n_a;
d05c1ba0 3456 char *tmps = POPpx;
a0d0e21e
LW		 3457 TAINT_PROPER("chroot");
3458 PUSHi( chroot(tmps) >= 0 );
3459 RETURN;
3460#else
cea2e8a9 3461 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3462#endif
3463}
3464
3465PP(pp_unlink)
3466{
39644a26 3467 dSP; dMARK; dTARGET;
a0d0e21e 3468 I32 value;
533c011a 3469 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3470 SP = MARK;
3471 PUSHi(value);
3472 RETURN;
3473}
3474
3475PP(pp_chmod)
3476{
39644a26 3477 dSP; dMARK; dTARGET;
a0d0e21e 3478 I32 value;
533c011a 3479 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3480 SP = MARK;
3481 PUSHi(value);
3482 RETURN;
3483}
3484
3485PP(pp_utime)
3486{
39644a26 3487 dSP; dMARK; dTARGET;
a0d0e21e 3488 I32 value;
533c011a 3489 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3490 SP = MARK;
3491 PUSHi(value);
3492 RETURN;
3493}
3494
3495PP(pp_rename)
3496{
39644a26 3497 dSP; dTARGET;
a0d0e21e 3498 int anum;
2d8e6c8d 3499 STRLEN n_a;
a0d0e21e 3500
2d8e6c8d
GS		 3501 char *tmps2 = POPpx;
3502 char *tmps = SvPV(TOPs, n_a);
a0d0e21e
LW		 3503 TAINT_PROPER("rename");
3504#ifdef HAS_RENAME
baed7233 3505 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3506#else
6b88bc9c 3507 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
ed969818
W		 3508 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3509 anum = 1;
3510 else {
3654eb6c 3511 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
ed969818
W		 3512 (void)UNLINK(tmps2);
3513 if (!(anum = link(tmps, tmps2)))
3514 anum = UNLINK(tmps);
3515 }
a0d0e21e
LW		 3516 }
3517#endif
3518 SETi( anum >= 0 );
3519 RETURN;
3520}
3521
3522PP(pp_link)
3523{
a0d0e21e 3524#ifdef HAS_LINK
370f6000 3525 dSP; dTARGET;
2d8e6c8d
GS		 3526 STRLEN n_a;
3527 char *tmps2 = POPpx;
3528 char *tmps = SvPV(TOPs, n_a);
a0d0e21e 3529 TAINT_PROPER("link");
146174a9 3530 SETi( PerlLIO_link(tmps, tmps2) >= 0 );
65850d11 3531 RETURN;
a0d0e21e 3532#else
0322a713 3533 DIE(aTHX_ PL_no_func, "link");
a0d0e21e 3534#endif
a0d0e21e
LW		 3535}
3536
3537PP(pp_symlink)
3538{
a0d0e21e 3539#ifdef HAS_SYMLINK
9cad6237 3540 dSP; dTARGET;
2d8e6c8d
GS		 3541 STRLEN n_a;
3542 char *tmps2 = POPpx;
3543 char *tmps = SvPV(TOPs, n_a);
a0d0e21e
LW		 3544 TAINT_PROPER("symlink");