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[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW		 1/* pp_sys.c
2 *
be3c0a43 3 * Copyright (c) 1991-2002, Larry Wall
a0d0e21e
LW		 4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
7 *
8 */
9
10/*
11 * But only a short way ahead its floor and the walls on either side were
12 * cloven by a great fissure, out of which the red glare came, now leaping
13 * up, now dying down into darkness; and all the while far below there was
14 * a rumour and a trouble as of great engines throbbing and labouring.
15 */
16
17#include "EXTERN.h"
864dbfa3 18#define PERL_IN_PP_SYS_C
a0d0e21e
LW		 19#include "perl.h"
20
f1066039
JH		 21#ifdef I_SHADOW
22/* Shadow password support for solaris - pdo@cs.umd.edu
23 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH		 24 * The API is from SysV.
25 *
26 * There are at least two more shadow interfaces,
27 * see the comments in pp_gpwent().
28 *
29 * --jhi */
30# ifdef __hpux__
c529f79d 31/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 32 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH		 33# undef MAXINT
34# endif
35# include <shadow.h>
8c0bfa08
PB		 36#endif
37
301e8125
NIS		 38#ifdef HAS_SYSCALL
39#ifdef __cplusplus
8ac85365
NIS		 40extern "C" int syscall(unsigned long,...);
41#endif
42#endif
43
76c32331 44#ifdef I_SYS_WAIT
45# include <sys/wait.h>
46#endif
47
48#ifdef I_SYS_RESOURCE
49# include <sys/resource.h>
16d20bd9 50#endif
a0d0e21e 51
2986a63f
JH		 52#ifdef NETWARE
53NETDB_DEFINE_CONTEXT
54#endif
55
a0d0e21e 56#ifdef HAS_SELECT
1e743fda
JH		 57# ifdef I_SYS_SELECT
58# include <sys/select.h>
59# endif
a0d0e21e 60#endif
a0d0e21e 61
dc45a647
MB		 62/* XXX Configure test needed.
63 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS		 64 applications, see "extern int errno in perl.h". Creating such
65 a test requires taking into account the differences between
66 compiling multithreaded and singlethreaded ($ccflags et al).
67 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 68*/
cb50131a 69#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW		 70extern int h_errno;
71#endif
72
73#ifdef HAS_PASSWD
74# ifdef I_PWD
75# include <pwd.h>
76# else
fd8cd3a3 77# if !defined(VMS)
20ce7b12
GS		 78 struct passwd *getpwnam (char *);
79 struct passwd *getpwuid (Uid_t);
fd8cd3a3 80# endif
a0d0e21e 81# endif
28e8609d 82# ifdef HAS_GETPWENT
10bc17b6 83#ifndef getpwent
20ce7b12 84 struct passwd *getpwent (void);
10bc17b6 85#endif
28e8609d 86# endif
a0d0e21e
LW		 87#endif
88
89#ifdef HAS_GROUP
90# ifdef I_GRP
91# include <grp.h>
92# else
20ce7b12
GS		 93 struct group *getgrnam (char *);
94 struct group *getgrgid (Gid_t);
a0d0e21e 95# endif
28e8609d 96# ifdef HAS_GETGRENT
10bc17b6 97#ifndef getgrent
20ce7b12 98 struct group *getgrent (void);
10bc17b6 99#endif
28e8609d 100# endif
a0d0e21e
LW		 101#endif
102
103#ifdef I_UTIME
3730b96e 104# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 105# include <sys/utime.h>
106# else
107# include <utime.h>
108# endif
a0d0e21e 109#endif
a0d0e21e 110
cbdc8872 111#ifdef HAS_CHSIZE
cd52b7b2 112# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
113# undef my_chsize
114# endif
6ad3d225 115# define my_chsize PerlLIO_chsize
cbdc8872 116#endif
117
ff68c719 118#ifdef HAS_FLOCK
119# define FLOCK flock
120#else /* no flock() */
121
36477c24 122 /* fcntl.h might not have been included, even if it exists, because
123 the current Configure only sets I_FCNTL if it's needed to pick up
124 the *_OK constants. Make sure it has been included before testing
125 the fcntl() locking constants. */
126# if defined(HAS_FCNTL) && !defined(I_FCNTL)
127# include <fcntl.h>
128# endif
129
9d9004a9 130# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 131# define FLOCK fcntl_emulate_flock
132# define FCNTL_EMULATE_FLOCK
133# else /* no flock() or fcntl(F_SETLK,...) */
134# ifdef HAS_LOCKF
135# define FLOCK lockf_emulate_flock
136# define LOCKF_EMULATE_FLOCK
137# endif /* lockf */
138# endif /* no flock() or fcntl(F_SETLK,...) */
139
140# ifdef FLOCK
20ce7b12 141 static int FLOCK (int, int);
ff68c719 142
143 /*
144 * These are the flock() constants. Since this sytems doesn't have
145 * flock(), the values of the constants are probably not available.
146 */
147# ifndef LOCK_SH
148# define LOCK_SH 1
149# endif
150# ifndef LOCK_EX
151# define LOCK_EX 2
152# endif
153# ifndef LOCK_NB
154# define LOCK_NB 4
155# endif
156# ifndef LOCK_UN
157# define LOCK_UN 8
158# endif
159# endif /* emulating flock() */
160
161#endif /* no flock() */
55497cff 162
85ab1d1d
JH		 163#define ZBTLEN 10
164static char zero_but_true[ZBTLEN + 1] = "0 but true";
165
5ff3f7a4
GS		 166#if defined(I_SYS_ACCESS) && !defined(R_OK)
167# include <sys/access.h>
168#endif
169
c529f79d
CB		 170#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
171# define FD_CLOEXEC 1 /* NeXT needs this */
172#endif
173
5ff3f7a4
GS		 174#undef PERL_EFF_ACCESS_R_OK /* EFFective uid/gid ACCESS R_OK */
175#undef PERL_EFF_ACCESS_W_OK
176#undef PERL_EFF_ACCESS_X_OK
177
178/* F_OK unused: if stat() cannot find it... */
179
180#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 181 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
5ff3f7a4
GS		 182# define PERL_EFF_ACCESS_R_OK(p) (access((p), R_OK | EFF_ONLY_OK))
183# define PERL_EFF_ACCESS_W_OK(p) (access((p), W_OK | EFF_ONLY_OK))
184# define PERL_EFF_ACCESS_X_OK(p) (access((p), X_OK | EFF_ONLY_OK))
185#endif
186
187#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_EACCESS)
3813c136 188# ifdef I_SYS_SECURITY
5ff3f7a4
GS		 189# include <sys/security.h>
190# endif
c955f117
JH		 191# ifdef ACC_SELF
192 /* HP SecureWare */
193# define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK, ACC_SELF))
194# define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK, ACC_SELF))
195# define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK, ACC_SELF))
196# else
197 /* SCO */
198# define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK))
199# define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK))
200# define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK))
201# endif
5ff3f7a4
GS		 202#endif
203
204#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 205 /* AIX */
5ff3f7a4
GS		 206# define PERL_EFF_ACCESS_R_OK(p) (accessx((p), R_OK, ACC_SELF))
207# define PERL_EFF_ACCESS_W_OK(p) (accessx((p), W_OK, ACC_SELF))
208# define PERL_EFF_ACCESS_X_OK(p) (accessx((p), X_OK, ACC_SELF))
209#endif
210
327c3667
GS		 211#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) \
212 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
213 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 214/* The Hard Way. */
327c3667 215STATIC int
7f4774ae 216S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 217{
5ff3f7a4
GS		 218 Uid_t ruid = getuid();
219 Uid_t euid = geteuid();
220 Gid_t rgid = getgid();
221 Gid_t egid = getegid();
222 int res;
223
146174a9 224 LOCK_CRED_MUTEX;
5ff3f7a4 225#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 226 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 227#else
228#ifdef HAS_SETREUID
229 if (setreuid(euid, ruid))
230#else
231#ifdef HAS_SETRESUID
232 if (setresuid(euid, ruid, (Uid_t)-1))
233#endif
234#endif
cea2e8a9 235 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 236#endif
237
238#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 239 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS		 240#else
241#ifdef HAS_SETREGID
242 if (setregid(egid, rgid))
243#else
244#ifdef HAS_SETRESGID
245 if (setresgid(egid, rgid, (Gid_t)-1))
246#endif
247#endif
cea2e8a9 248 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 249#endif
250
251 res = access(path, mode);
252
253#ifdef HAS_SETREUID
254 if (setreuid(ruid, euid))
255#else
256#ifdef HAS_SETRESUID
257 if (setresuid(ruid, euid, (Uid_t)-1))
258#endif
259#endif
cea2e8a9 260 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 261
262#ifdef HAS_SETREGID
263 if (setregid(rgid, egid))
264#else
265#ifdef HAS_SETRESGID
266 if (setresgid(rgid, egid, (Gid_t)-1))
267#endif
268#endif
cea2e8a9 269 Perl_croak(aTHX_ "leaving effective gid failed");
146174a9 270 UNLOCK_CRED_MUTEX;
5ff3f7a4
GS		 271
272 return res;
273}
274# define PERL_EFF_ACCESS_R_OK(p) (emulate_eaccess((p), R_OK))
275# define PERL_EFF_ACCESS_W_OK(p) (emulate_eaccess((p), W_OK))
276# define PERL_EFF_ACCESS_X_OK(p) (emulate_eaccess((p), X_OK))
277#endif
278
279#if !defined(PERL_EFF_ACCESS_R_OK)
76ffd3b9
IZ		 280/* With it or without it: anyway you get a warning: either that
281 it is unused, or it is declared static and never defined.
282 */
327c3667 283STATIC int
7f4774ae 284S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 285{
cea2e8a9 286 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 287 /*NOTREACHED*/
288 return -1;
289}
290#endif
291
a0d0e21e
LW		 292PP(pp_backtick)
293{
39644a26 294 dSP; dTARGET;
760ac839 295 PerlIO *fp;
2d8e6c8d
GS		 296 STRLEN n_a;
297 char *tmps = POPpx;
54310121 298 I32 gimme = GIMME_V;
16fe6d59 299 char *mode = "r";
54310121 300
a0d0e21e 301 TAINT_PROPER("``");
16fe6d59
GS		 302 if (PL_op->op_private & OPpOPEN_IN_RAW)
303 mode = "rb";
304 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
305 mode = "rt";
306 fp = PerlProc_popen(tmps, mode);
a0d0e21e 307 if (fp) {
ac27b0f5
NIS		 308 char *type = NULL;
309 if (PL_curcop->cop_io) {
310 type = SvPV_nolen(PL_curcop->cop_io);
311 }
ac27b0f5
NIS		 312 if (type && *type)
313 PerlIO_apply_layers(aTHX_ fp,mode,type);
314
54310121 315 if (gimme == G_VOID) {
96827780
MB		 316 char tmpbuf[256];
317 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
54310121 318 /*SUPPRESS 530*/
319 ;
320 }
321 else if (gimme == G_SCALAR) {
aa689395 322 sv_setpv(TARG, ""); /* note that this preserves previous buffer */
a0d0e21e
LW		 323 while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
324 /*SUPPRESS 530*/
325 ;
326 XPUSHs(TARG);
aa689395 327 SvTAINTED_on(TARG);
a0d0e21e
LW		 328 }
329 else {
330 SV *sv;
331
332 for (;;) {
8d6dde3e 333 sv = NEWSV(56, 79);
a0d0e21e
LW		 334 if (sv_gets(sv, fp, 0) == Nullch) {
335 SvREFCNT_dec(sv);
336 break;
337 }
338 XPUSHs(sv_2mortal(sv));
339 if (SvLEN(sv) - SvCUR(sv) > 20) {
340 SvLEN_set(sv, SvCUR(sv)+1);
341 Renew(SvPVX(sv), SvLEN(sv), char);
342 }
aa689395 343 SvTAINTED_on(sv);
a0d0e21e
LW		 344 }
345 }
6ad3d225 346 STATUS_NATIVE_SET(PerlProc_pclose(fp));
aa689395 347 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 348 }
349 else {
f86702cc 350 STATUS_NATIVE_SET(-1);
54310121 351 if (gimme == G_SCALAR)
a0d0e21e
LW		 352 RETPUSHUNDEF;
353 }
354
355 RETURN;
356}
357
358PP(pp_glob)
359{
360 OP *result;
f5284f61
IZ		 361 tryAMAGICunTARGET(iter, -1);
362
71686f12
GS		 363 /* Note that we only ever get here if File::Glob fails to load
364 * without at the same time croaking, for some reason, or if
365 * perl was built with PERL_EXTERNAL_GLOB */
366
a0d0e21e 367 ENTER;
a0d0e21e 368
c90c0ff4 369#ifndef VMS
3280af22 370 if (PL_tainting) {
7bac28a0 371 /*
372 * The external globbing program may use things we can't control,
373 * so for security reasons we must assume the worst.
374 */
375 TAINT;
22c35a8c 376 taint_proper(PL_no_security, "glob");
7bac28a0 377 }
c90c0ff4 378#endif /* !VMS */
7bac28a0 379
3280af22
NIS		 380 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
381 PL_last_in_gv = (GV*)*PL_stack_sp--;
a0d0e21e 382
3280af22 383 SAVESPTR(PL_rs); /* This is not permanent, either. */
79cb57f6 384 PL_rs = sv_2mortal(newSVpvn("\000", 1));
c07a80fd 385#ifndef DOSISH
386#ifndef CSH
6b88bc9c 387 *SvPVX(PL_rs) = '\n';
a0d0e21e 388#endif /* !CSH */
55497cff 389#endif /* !DOSISH */
c07a80fd 390
a0d0e21e
LW		 391 result = do_readline();
392 LEAVE;
393 return result;
394}
395
a0d0e21e
LW		 396PP(pp_rcatline)
397{
146174a9 398 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 399 return do_readline();
400}
401
402PP(pp_warn)
403{
39644a26 404 dSP; dMARK;
06bf62c7 405 SV *tmpsv;
a0d0e21e 406 char *tmps;
06bf62c7 407 STRLEN len;
a0d0e21e
LW		 408 if (SP - MARK != 1) {
409 dTARGET;
3280af22 410 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 411 tmpsv = TARG;
a0d0e21e
LW		 412 SP = MARK + 1;
413 }
414 else {
06bf62c7 415 tmpsv = TOPs;
a0d0e21e 416 }
06bf62c7
GS		 417 tmps = SvPV(tmpsv, len);
418 if (!tmps || !len) {
4e6ea2c3
GS		 419 SV *error = ERRSV;
420 (void)SvUPGRADE(error, SVt_PV);
421 if (SvPOK(error) && SvCUR(error))
422 sv_catpv(error, "\t...caught");
06bf62c7
GS		 423 tmpsv = error;
424 tmps = SvPV(tmpsv, len);
a0d0e21e 425 }
06bf62c7
GS		 426 if (!tmps || !len)
427 tmpsv = sv_2mortal(newSVpvn("Warning: something's wrong", 26));
428
cb50131a 429 Perl_warn(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 430 RETSETYES;
431}
432
433PP(pp_die)
434{
39644a26 435 dSP; dMARK;
a0d0e21e 436 char *tmps;
06bf62c7
GS		 437 SV *tmpsv;
438 STRLEN len;
439 bool multiarg = 0;
96e176bf
CL		 440#ifdef VMS
441 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
442#endif
a0d0e21e
LW		 443 if (SP - MARK != 1) {
444 dTARGET;
3280af22 445 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7
GS		 446 tmpsv = TARG;
447 tmps = SvPV(tmpsv, len);
448 multiarg = 1;
a0d0e21e
LW		 449 SP = MARK + 1;
450 }
451 else {
4e6ea2c3 452 tmpsv = TOPs;
bf484eac 453 tmps = (SvROK(tmpsv) && PL_in_eval) ? Nullch : SvPV(tmpsv, len);
a0d0e21e 454 }
06bf62c7 455 if (!tmps || !len) {
4e6ea2c3
GS		 456 SV *error = ERRSV;
457 (void)SvUPGRADE(error, SVt_PV);
06bf62c7
GS		 458 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
459 if (!multiarg)
4e6ea2c3 460 SvSetSV(error,tmpsv);
06bf62c7 461 else if (sv_isobject(error)) {
05423cc9
GS		 462 HV *stash = SvSTASH(SvRV(error));
463 GV *gv = gv_fetchmethod(stash, "PROPAGATE");
464 if (gv) {
146174a9 465 SV *file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
b448e4fe 466 SV *line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
05423cc9
GS		 467 EXTEND(SP, 3);
468 PUSHMARK(SP);
469 PUSHs(error);
470 PUSHs(file);
471 PUSHs(line);
472 PUTBACK;
864dbfa3
GS		 473 call_sv((SV*)GvCV(gv),
474 G_SCALAR|G_EVAL|G_KEEPERR);
3280af22 475 sv_setsv(error,*PL_stack_sp--);
05423cc9
GS		 476 }
477 }
b3fe4827 478 DIE(aTHX_ Nullformat);
4e6ea2c3
GS		 479 }
480 else {
481 if (SvPOK(error) && SvCUR(error))
482 sv_catpv(error, "\t...propagated");
06bf62c7
GS		 483 tmpsv = error;
484 tmps = SvPV(tmpsv, len);
4e6ea2c3 485 }
a0d0e21e 486 }
06bf62c7
GS		 487 if (!tmps || !len)
488 tmpsv = sv_2mortal(newSVpvn("Died", 4));
489
cb50131a 490 DIE(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 491}
492
493/* I/O. */
494
495PP(pp_open)
496{
39644a26 497 dSP;
a567e93b
NIS		 498 dMARK; dORIGMARK;
499 dTARGET;
a0d0e21e
LW		 500 GV *gv;
501 SV *sv;
5b468f54 502 IO *io;
a0d0e21e
LW		 503 char *tmps;
504 STRLEN len;
4592e6ca 505 MAGIC *mg;
a567e93b 506 bool ok;
a0d0e21e 507
a567e93b 508 gv = (GV *)*++MARK;
5f05dabc 509 if (!isGV(gv))
cea2e8a9 510 DIE(aTHX_ PL_no_usym, "filehandle");
5b468f54 511 if ((io = GvIOp(gv)))
36477c24 512 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 513
5b468f54 514 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
a567e93b
NIS		 515 /* Method's args are same as ours ... */
516 /* ... except handle is replaced by the object */
5b468f54 517 *MARK-- = SvTIED_obj((SV*)io, mg);
a567e93b 518 PUSHMARK(MARK);
4592e6ca
NIS		 519 PUTBACK;
520 ENTER;
864dbfa3 521 call_method("OPEN", G_SCALAR);
4592e6ca
NIS		 522 LEAVE;
523 SPAGAIN;
524 RETURN;
525 }
526
a567e93b
NIS		 527 if (MARK < SP) {
528 sv = *++MARK;
529 }
530 else {
531 sv = GvSV(gv);
532 }
533
a0d0e21e 534 tmps = SvPV(sv, len);
a567e93b
NIS		 535 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp, MARK+1, (SP-MARK));
536 SP = ORIGMARK;
537 if (ok)
3280af22
NIS		 538 PUSHi( (I32)PL_forkprocess );
539 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 540 PUSHi(0);
541 else
542 RETPUSHUNDEF;
543 RETURN;
544}
545
546PP(pp_close)
547{
39644a26 548 dSP;
a0d0e21e 549 GV *gv;
5b468f54 550 IO *io;
1d603a67 551 MAGIC *mg;
a0d0e21e
LW		 552
553 if (MAXARG == 0)
3280af22 554 gv = PL_defoutgv;
a0d0e21e
LW		 555 else
556 gv = (GV*)POPs;
1d603a67 557
5b468f54
AMS		 558 if (gv && (io = GvIO(gv))
559 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
560 {
1d603a67 561 PUSHMARK(SP);
5b468f54 562 XPUSHs(SvTIED_obj((SV*)io, mg));
1d603a67
GB		 563 PUTBACK;
564 ENTER;
864dbfa3 565 call_method("CLOSE", G_SCALAR);
1d603a67
GB		 566 LEAVE;
567 SPAGAIN;
568 RETURN;
569 }
a0d0e21e 570 EXTEND(SP, 1);
54310121 571 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 572 RETURN;
573}
574
575PP(pp_pipe_op)
576{
a0d0e21e 577#ifdef HAS_PIPE
9cad6237 578 dSP;
a0d0e21e
LW		 579 GV *rgv;
580 GV *wgv;
581 register IO *rstio;
582 register IO *wstio;
583 int fd[2];
584
585 wgv = (GV*)POPs;
586 rgv = (GV*)POPs;
587
588 if (!rgv || !wgv)
589 goto badexit;
590
4633a7c4 591 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
cea2e8a9 592 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 593 rstio = GvIOn(rgv);
594 wstio = GvIOn(wgv);
595
596 if (IoIFP(rstio))
597 do_close(rgv, FALSE);
598 if (IoIFP(wstio))
599 do_close(wgv, FALSE);
600
6ad3d225 601 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 602 goto badexit;
603
760ac839
LW		 604 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
605 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
a0d0e21e 606 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 607 IoTYPE(rstio) = IoTYPE_RDONLY;
608 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 609
610 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 611 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
6ad3d225 612 else PerlLIO_close(fd[0]);
760ac839 613 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
6ad3d225 614 else PerlLIO_close(fd[1]);
a0d0e21e
LW		 615 goto badexit;
616 }
4771b018
GS		 617#if defined(HAS_FCNTL) && defined(F_SETFD)
618 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
619 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
620#endif
a0d0e21e
LW		 621 RETPUSHYES;
622
623badexit:
624 RETPUSHUNDEF;
625#else
cea2e8a9 626 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 627#endif
628}
629
630PP(pp_fileno)
631{
39644a26 632 dSP; dTARGET;
a0d0e21e
LW		 633 GV *gv;
634 IO *io;
760ac839 635 PerlIO *fp;
4592e6ca
NIS		 636 MAGIC *mg;
637
a0d0e21e
LW		 638 if (MAXARG < 1)
639 RETPUSHUNDEF;
640 gv = (GV*)POPs;
4592e6ca 641
5b468f54
AMS		 642 if (gv && (io = GvIO(gv))
643 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
644 {
4592e6ca 645 PUSHMARK(SP);
5b468f54 646 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 647 PUTBACK;
648 ENTER;
864dbfa3 649 call_method("FILENO", G_SCALAR);
4592e6ca
NIS		 650 LEAVE;
651 SPAGAIN;
652 RETURN;
653 }
654
c289d2f7
JH		 655 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
656 /* Can't do this because people seem to do things like
657 defined(fileno($foo)) to check whether $foo is a valid fh.
658 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
659 report_evil_fh(gv, io, PL_op->op_type);
660 */
a0d0e21e 661 RETPUSHUNDEF;
c289d2f7
JH		 662 }
663
760ac839 664 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 665 RETURN;
666}
667
668PP(pp_umask)
669{
39644a26 670 dSP; dTARGET;
d7e492a4 671#ifdef HAS_UMASK
761237fe 672 Mode_t anum;
a0d0e21e 673
a0d0e21e 674 if (MAXARG < 1) {
6ad3d225
GS		 675 anum = PerlLIO_umask(0);
676 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 677 }
678 else
6ad3d225 679 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 680 TAINT_PROPER("umask");
681 XPUSHi(anum);
682#else
eec2d3df
GS		 683 /* Only DIE if trying to restrict permissions on `user' (self).
684 * Otherwise it's harmless and more useful to just return undef
685 * since 'group' and 'other' concepts probably don't exist here. */
686 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 687 DIE(aTHX_ "umask not implemented");
6b88bc9c 688 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 689#endif
690 RETURN;
691}
692
693PP(pp_binmode)
694{
39644a26 695 dSP;
a0d0e21e
LW		 696 GV *gv;
697 IO *io;
760ac839 698 PerlIO *fp;
4592e6ca 699 MAGIC *mg;
16fe6d59 700 SV *discp = Nullsv;
a0d0e21e
LW		 701
702 if (MAXARG < 1)
703 RETPUSHUNDEF;
60382766 704 if (MAXARG > 1) {
16fe6d59 705 discp = POPs;
60382766 706 }
a0d0e21e 707
301e8125 708 gv = (GV*)POPs;
4592e6ca 709
5b468f54
AMS		 710 if (gv && (io = GvIO(gv))
711 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
712 {
4592e6ca 713 PUSHMARK(SP);
5b468f54 714 XPUSHs(SvTIED_obj((SV*)io, mg));
16fe6d59
GS		 715 if (discp)
716 XPUSHs(discp);
4592e6ca
NIS		 717 PUTBACK;
718 ENTER;
864dbfa3 719 call_method("BINMODE", G_SCALAR);
4592e6ca
NIS		 720 LEAVE;
721 SPAGAIN;
722 RETURN;
723 }
a0d0e21e
LW		 724
725 EXTEND(SP, 1);
50f846a7 726 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7
JH		 727 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
728 report_evil_fh(gv, io, PL_op->op_type);
50f846a7
SC		 729 RETPUSHUNDEF;
730 }
a0d0e21e 731
60382766
NIS		 732 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
733 (discp) ? SvPV_nolen(discp) : Nullch))
a0d0e21e
LW		 734 RETPUSHYES;
735 else
736 RETPUSHUNDEF;
a0d0e21e
LW		 737}
738
739PP(pp_tie)
740{
39644a26 741 dSP;
e336de0d 742 dMARK;
a0d0e21e
LW		 743 SV *varsv;
744 HV* stash;
745 GV *gv;
a0d0e21e 746 SV *sv;
3280af22 747 I32 markoff = MARK - PL_stack_base;
a0d0e21e 748 char *methname;
14befaf4 749 int how = PERL_MAGIC_tied;
e336de0d 750 U32 items;
2d8e6c8d 751 STRLEN n_a;
a0d0e21e 752
e336de0d 753 varsv = *++MARK;
6b05c17a
NIS		 754 switch(SvTYPE(varsv)) {
755 case SVt_PVHV:
756 methname = "TIEHASH";
03c6e78a 757 HvEITER((HV *)varsv) = Null(HE *);
6b05c17a
NIS		 758 break;
759 case SVt_PVAV:
760 methname = "TIEARRAY";
761 break;
762 case SVt_PVGV:
7fb37951
AMS		 763#ifdef GV_UNIQUE_CHECK
764 if (GvUNIQUE((GV*)varsv)) {
765 Perl_croak(aTHX_ "Attempt to tie unique GV");
5bd07a3d
DM		 766 }
767#endif
6b05c17a 768 methname = "TIEHANDLE";
14befaf4 769 how = PERL_MAGIC_tiedscalar;
5b468f54
AMS		 770 /* For tied filehandles, we apply tiedscalar magic to the IO
771 slot of the GP rather than the GV itself. AMS 20010812 */
772 if (!GvIOp(varsv))
773 GvIOp(varsv) = newIO();
774 varsv = (SV *)GvIOp(varsv);
6b05c17a
NIS		 775 break;
776 default:
777 methname = "TIESCALAR";
14befaf4 778 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 779 break;
780 }
e336de0d
GS		 781 items = SP - MARK++;
782 if (sv_isobject(*MARK)) {
6b05c17a 783 ENTER;
e788e7d3 784 PUSHSTACKi(PERLSI_MAGIC);
e336de0d
GS		 785 PUSHMARK(SP);
786 EXTEND(SP,items);
787 while (items--)
788 PUSHs(*MARK++);
789 PUTBACK;
864dbfa3 790 call_method(methname, G_SCALAR);
301e8125 791 }
6b05c17a 792 else {
864dbfa3 793 /* Not clear why we don't call call_method here too.
6b05c17a
NIS		 794 * perhaps to get different error message ?
795 */
e336de0d 796 stash = gv_stashsv(*MARK, FALSE);
6b05c17a 797 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
cea2e8a9 798 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%s\"",
301e8125 799 methname, SvPV(*MARK,n_a));
6b05c17a
NIS		 800 }
801 ENTER;
e788e7d3 802 PUSHSTACKi(PERLSI_MAGIC);
e336de0d
GS		 803 PUSHMARK(SP);
804 EXTEND(SP,items);
805 while (items--)
806 PUSHs(*MARK++);
807 PUTBACK;
864dbfa3 808 call_sv((SV*)GvCV(gv), G_SCALAR);
6b05c17a 809 }
a0d0e21e
LW		 810 SPAGAIN;
811
812 sv = TOPs;
d3acc0f7 813 POPSTACK;
a0d0e21e 814 if (sv_isobject(sv)) {
33c27489 815 sv_unmagic(varsv, how);
ae21d580
JH		 816 /* Croak if a self-tie on an aggregate is attempted. */
817 if (varsv == SvRV(sv) &&
818 (SvTYPE(sv) == SVt_PVAV ||
819 SvTYPE(sv) == SVt_PVHV))
820 Perl_croak(aTHX_
821 "Self-ties of arrays and hashes are not supported");
68a4a7e4 822 sv_magic(varsv, sv, how, Nullch, 0);
a0d0e21e
LW		 823 }
824 LEAVE;
3280af22 825 SP = PL_stack_base + markoff;
a0d0e21e
LW		 826 PUSHs(sv);
827 RETURN;
828}
829
830PP(pp_untie)
831{
39644a26 832 dSP;
5b468f54 833 MAGIC *mg;
33c27489 834 SV *sv = POPs;
14befaf4
DM		 835 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
836 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 837
5b468f54
AMS		 838 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
839 RETPUSHYES;
840
841 if ((mg = SvTIED_mg(sv, how))) {
a29a5827
NIS		 842 SV *obj = SvRV(mg->mg_obj);
843 GV *gv;
844 CV *cv = NULL;
fa2b88e0
JS		 845 if (obj) {
846 if ((gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE)) &&
847 isGV(gv) && (cv = GvCV(gv))) {
848 PUSHMARK(SP);
849 XPUSHs(SvTIED_obj((SV*)gv, mg));
850 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
851 PUTBACK;
852 ENTER;
853 call_sv((SV *)cv, G_VOID);
854 LEAVE;
855 SPAGAIN;
856 }
857 else if (ckWARN(WARN_UNTIE)) {
858 if (mg && SvREFCNT(obj) > 1)
9014280d 859 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
fa2b88e0
JS		 860 "untie attempted while %"UVuf" inner references still exist",
861 (UV)SvREFCNT(obj) - 1 ) ;
862 }
cbdc8872 863 }
fa2b88e0 864 sv_unmagic(sv, how) ;
cbdc8872 865 }
55497cff 866 RETPUSHYES;
a0d0e21e
LW		 867}
868
c07a80fd 869PP(pp_tied)
870{
39644a26 871 dSP;
5b468f54 872 MAGIC *mg;
33c27489 873 SV *sv = POPs;
14befaf4
DM		 874 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
875 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54
AMS		 876
877 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
878 RETPUSHUNDEF;
c07a80fd 879
155aba94 880 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 881 SV *osv = SvTIED_obj(sv, mg);
882 if (osv == mg->mg_obj)
883 osv = sv_mortalcopy(osv);
884 PUSHs(osv);
885 RETURN;
c07a80fd 886 }
c07a80fd 887 RETPUSHUNDEF;
888}
889
a0d0e21e
LW		 890PP(pp_dbmopen)
891{
39644a26 892 dSP;
a0d0e21e
LW		 893 HV *hv;
894 dPOPPOPssrl;
895 HV* stash;
896 GV *gv;
a0d0e21e
LW		 897 SV *sv;
898
899 hv = (HV*)POPs;
900
3280af22 901 sv = sv_mortalcopy(&PL_sv_no);
a0d0e21e
LW		 902 sv_setpv(sv, "AnyDBM_File");
903 stash = gv_stashsv(sv, FALSE);
8ebc5c01 904 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 905 PUTBACK;
864dbfa3 906 require_pv("AnyDBM_File.pm");
a0d0e21e 907 SPAGAIN;
8ebc5c01 908 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 909 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 910 }
911
57d3b86d 912 ENTER;
924508f0 913 PUSHMARK(SP);
6b05c17a 914
924508f0 915 EXTEND(SP, 5);
a0d0e21e
LW		 916 PUSHs(sv);
917 PUSHs(left);
918 if (SvIV(right))
b448e4fe 919 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
a0d0e21e 920 else
b448e4fe 921 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
a0d0e21e 922 PUSHs(right);
57d3b86d 923 PUTBACK;
864dbfa3 924 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 925 SPAGAIN;
926
927 if (!sv_isobject(TOPs)) {
924508f0
GS		 928 SP--;
929 PUSHMARK(SP);
a0d0e21e
LW		 930 PUSHs(sv);
931 PUSHs(left);
b448e4fe 932 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
a0d0e21e 933 PUSHs(right);
a0d0e21e 934 PUTBACK;
864dbfa3 935 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 936 SPAGAIN;
937 }
938
6b05c17a 939 if (sv_isobject(TOPs)) {
14befaf4
DM		 940 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
941 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, Nullch, 0);
6b05c17a 942 }
a0d0e21e
LW		 943 LEAVE;
944 RETURN;
945}
946
947PP(pp_dbmclose)
948{
cea2e8a9 949 return pp_untie();
a0d0e21e
LW		 950}
951
952PP(pp_sselect)
953{
a0d0e21e 954#ifdef HAS_SELECT
9cad6237 955 dSP; dTARGET;
a0d0e21e
LW		 956 register I32 i;
957 register I32 j;
958 register char *s;
959 register SV *sv;
65202027 960 NV value;
a0d0e21e
LW		 961 I32 maxlen = 0;
962 I32 nfound;
963 struct timeval timebuf;
964 struct timeval *tbuf = &timebuf;
965 I32 growsize;
966 char *fd_sets[4];
2d8e6c8d 967 STRLEN n_a;
a0d0e21e
LW		 968#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
969 I32 masksize;
970 I32 offset;
971 I32 k;
972
973# if BYTEORDER & 0xf0000
974# define ORDERBYTE (0x88888888 - BYTEORDER)
975# else
976# define ORDERBYTE (0x4444 - BYTEORDER)
977# endif
978
979#endif
980
981 SP -= 4;
982 for (i = 1; i <= 3; i++) {
983 if (!SvPOK(SP[i]))
984 continue;
985 j = SvCUR(SP[i]);
986 if (maxlen < j)
987 maxlen = j;
988 }
989
5ff3f7a4 990/* little endians can use vecs directly */
e366b469 991#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 992# ifdef NFDBITS
a0d0e21e 993
5ff3f7a4
GS		 994# ifndef NBBY
995# define NBBY 8
996# endif
a0d0e21e
LW		 997
998 masksize = NFDBITS / NBBY;
5ff3f7a4 999# else
a0d0e21e 1000 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1001# endif
a0d0e21e
LW		 1002 Zero(&fd_sets[0], 4, char*);
1003#endif
1004
e366b469
PG		 1005# if SELECT_MIN_BITS > 1
1006 /* If SELECT_MIN_BITS is greater than one we most probably will want
1007 * to align the sizes with SELECT_MIN_BITS/8 because for example
1008 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1009 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1010 * on (sets/tests/clears bits) is 32 bits. */
1011 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1012# else
1013 growsize = sizeof(fd_set);
1014# endif
1015
a0d0e21e
LW		 1016 sv = SP[4];
1017 if (SvOK(sv)) {
1018 value = SvNV(sv);
1019 if (value < 0.0)
1020 value = 0.0;
1021 timebuf.tv_sec = (long)value;
65202027 1022 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1023 timebuf.tv_usec = (long)(value * 1000000.0);
1024 }
1025 else
1026 tbuf = Null(struct timeval*);
1027
1028 for (i = 1; i <= 3; i++) {
1029 sv = SP[i];
1030 if (!SvOK(sv)) {
1031 fd_sets[i] = 0;
1032 continue;
1033 }
1034 else if (!SvPOK(sv))
2d8e6c8d 1035 SvPV_force(sv,n_a); /* force string conversion */
a0d0e21e
LW		 1036 j = SvLEN(sv);
1037 if (j < growsize) {
1038 Sv_Grow(sv, growsize);
a0d0e21e 1039 }
c07a80fd 1040 j = SvCUR(sv);
1041 s = SvPVX(sv) + j;
1042 while (++j <= growsize) {
1043 *s++ = '\0';
1044 }
1045
a0d0e21e
LW		 1046#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1047 s = SvPVX(sv);
1048 New(403, fd_sets[i], growsize, char);
1049 for (offset = 0; offset < growsize; offset += masksize) {
1050 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1051 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1052 }
1053#else
1054 fd_sets[i] = SvPVX(sv);
1055#endif
1056 }
1057
6ad3d225 1058 nfound = PerlSock_select(
a0d0e21e
LW		 1059 maxlen * 8,
1060 (Select_fd_set_t) fd_sets[1],
1061 (Select_fd_set_t) fd_sets[2],
1062 (Select_fd_set_t) fd_sets[3],
1063 tbuf);
1064 for (i = 1; i <= 3; i++) {
1065 if (fd_sets[i]) {
1066 sv = SP[i];
1067#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1068 s = SvPVX(sv);
1069 for (offset = 0; offset < growsize; offset += masksize) {
1070 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1071 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1072 }
1073 Safefree(fd_sets[i]);
1074#endif
1075 SvSETMAGIC(sv);
1076 }
1077 }
1078
1079 PUSHi(nfound);
1080 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1081 value = (NV)(timebuf.tv_sec) +
1082 (NV)(timebuf.tv_usec) / 1000000.0;
3280af22 1083 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 1084 sv_setnv(sv, value);
1085 }
1086 RETURN;
1087#else
cea2e8a9 1088 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1089#endif
1090}
1091
4633a7c4 1092void
864dbfa3 1093Perl_setdefout(pTHX_ GV *gv)
4633a7c4
LW		 1094{
1095 if (gv)
1096 (void)SvREFCNT_inc(gv);
3280af22
NIS		 1097 if (PL_defoutgv)
1098 SvREFCNT_dec(PL_defoutgv);
1099 PL_defoutgv = gv;
4633a7c4
LW		 1100}
1101
a0d0e21e
LW		 1102PP(pp_select)
1103{
39644a26 1104 dSP; dTARGET;
4633a7c4
LW		 1105 GV *newdefout, *egv;
1106 HV *hv;
1107
533c011a 1108 newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
4633a7c4 1109
3280af22 1110 egv = GvEGV(PL_defoutgv);
4633a7c4 1111 if (!egv)
3280af22 1112 egv = PL_defoutgv;
4633a7c4
LW		 1113 hv = GvSTASH(egv);
1114 if (! hv)
3280af22 1115 XPUSHs(&PL_sv_undef);
4633a7c4 1116 else {
cbdc8872 1117 GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1118 if (gvp && *gvp == egv) {
f7aaccc2 1119 gv_efullname4(TARG, PL_defoutgv, Nullch, TRUE);
f86702cc 1120 XPUSHTARG;
1121 }
1122 else {
1123 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1124 }
4633a7c4
LW		 1125 }
1126
1127 if (newdefout) {
ded8aa31
GS		 1128 if (!GvIO(newdefout))
1129 gv_IOadd(newdefout);
4633a7c4
LW		 1130 setdefout(newdefout);
1131 }
1132
a0d0e21e
LW		 1133 RETURN;
1134}
1135
1136PP(pp_getc)
1137{
39644a26 1138 dSP; dTARGET;
a0d0e21e 1139 GV *gv;
90133b69 1140 IO *io = NULL;
2ae324a7 1141 MAGIC *mg;
a0d0e21e 1142
32da55ab 1143 if (MAXARG == 0)
3280af22 1144 gv = PL_stdingv;
a0d0e21e
LW		 1145 else
1146 gv = (GV*)POPs;
2ae324a7 1147
5b468f54
AMS		 1148 if (gv && (io = GvIO(gv))
1149 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1150 {
54310121 1151 I32 gimme = GIMME_V;
2ae324a7 1152 PUSHMARK(SP);
5b468f54 1153 XPUSHs(SvTIED_obj((SV*)io, mg));
2ae324a7 1154 PUTBACK;
1155 ENTER;
864dbfa3 1156 call_method("GETC", gimme);
2ae324a7 1157 LEAVE;
1158 SPAGAIN;
54310121 1159 if (gimme == G_SCALAR)
1160 SvSetMagicSV_nosteal(TARG, TOPs);
2ae324a7 1161 RETURN;
1162 }
90133b69 1163 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
97e322ff
RGS		 1164 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)
1165 && (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY)))
90133b69 1166 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1167 RETPUSHUNDEF;
90133b69 1168 }
bbce6d69 1169 TAINT;
a0d0e21e 1170 sv_setpv(TARG, " ");
9bc64814 1171 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1172 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1173 /* Find out how many bytes the char needs */
1174 Size_t len = UTF8SKIP(SvPVX(TARG));
1175 if (len > 1) {
1176 SvGROW(TARG,len+1);
1177 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1178 SvCUR_set(TARG,1+len);
1179 }
1180 SvUTF8_on(TARG);
1181 }
a0d0e21e
LW		 1182 PUSHTARG;
1183 RETURN;
1184}
1185
1186PP(pp_read)
1187{
cea2e8a9 1188 return pp_sysread();
a0d0e21e
LW		 1189}
1190
76e3520e 1191STATIC OP *
cea2e8a9 1192S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1193{
c09156bb 1194 register PERL_CONTEXT *cx;
54310121 1195 I32 gimme = GIMME_V;
a0d0e21e
LW		 1196 AV* padlist = CvPADLIST(cv);
1197 SV** svp = AvARRAY(padlist);
1198
1199 ENTER;
1200 SAVETMPS;
1201
1202 push_return(retop);
146174a9 1203 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
a0d0e21e 1204 PUSHFORMAT(cx);
146174a9 1205 SAVEVPTR(PL_curpad);
3280af22 1206 PL_curpad = AvARRAY((AV*)svp[1]);
a0d0e21e 1207
4633a7c4 1208 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1209 return CvSTART(cv);
1210}
1211
1212PP(pp_enterwrite)
1213{
39644a26 1214 dSP;
a0d0e21e
LW		 1215 register GV *gv;
1216 register IO *io;
1217 GV *fgv;
1218 CV *cv;
1219
1220 if (MAXARG == 0)
3280af22 1221 gv = PL_defoutgv;
a0d0e21e
LW		 1222 else {
1223 gv = (GV*)POPs;
1224 if (!gv)
3280af22 1225 gv = PL_defoutgv;
a0d0e21e
LW		 1226 }
1227 EXTEND(SP, 1);
1228 io = GvIO(gv);
1229 if (!io) {
1230 RETPUSHNO;
1231 }
1232 if (IoFMT_GV(io))
1233 fgv = IoFMT_GV(io);
1234 else
1235 fgv = gv;
1236
1237 cv = GvFORM(fgv);
a0d0e21e 1238 if (!cv) {
2dd78f96 1239 char *name = NULL;
a0d0e21e 1240 if (fgv) {
748a9306 1241 SV *tmpsv = sv_newmortal();
43693395 1242 gv_efullname4(tmpsv, fgv, Nullch, FALSE);
2dd78f96 1243 name = SvPV_nolen(tmpsv);
a0d0e21e 1244 }
2dd78f96
JH		 1245 if (name && *name)
1246 DIE(aTHX_ "Undefined format \"%s\" called", name);
cea2e8a9 1247 DIE(aTHX_ "Not a format reference");
a0d0e21e 1248 }
44a8e56a 1249 if (CvCLONE(cv))
1250 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1251
44a8e56a 1252 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1253 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1254}
1255
1256PP(pp_leavewrite)
1257{
39644a26 1258 dSP;
a0d0e21e
LW		 1259 GV *gv = cxstack[cxstack_ix].blk_sub.gv;
1260 register IO *io = GvIOp(gv);
760ac839
LW		 1261 PerlIO *ofp = IoOFP(io);
1262 PerlIO *fp;
a0d0e21e
LW		 1263 SV **newsp;
1264 I32 gimme;
c09156bb 1265 register PERL_CONTEXT *cx;
a0d0e21e 1266
760ac839 1267 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1268 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
7ef822cd
JH		 1269 if (!io || !ofp)
1270 goto forget_top;
3280af22
NIS		 1271 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1272 PL_formtarget != PL_toptarget)
a0d0e21e 1273 {
4633a7c4
LW		 1274 GV *fgv;
1275 CV *cv;
a0d0e21e
LW		 1276 if (!IoTOP_GV(io)) {
1277 GV *topgv;
46fc3d4c 1278 SV *topname;
a0d0e21e
LW		 1279
1280 if (!IoTOP_NAME(io)) {
1281 if (!IoFMT_NAME(io))
1282 IoFMT_NAME(io) = savepv(GvNAME(gv));
cea2e8a9 1283 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", IoFMT_NAME(io)));
46fc3d4c 1284 topgv = gv_fetchpv(SvPVX(topname), FALSE, SVt_PVFM);
748a9306 1285 if ((topgv && GvFORM(topgv)) ||
a0d0e21e 1286 !gv_fetchpv("top",FALSE,SVt_PVFM))
46fc3d4c 1287 IoTOP_NAME(io) = savepv(SvPVX(topname));
a0d0e21e
LW		 1288 else
1289 IoTOP_NAME(io) = savepv("top");
1290 }
1291 topgv = gv_fetchpv(IoTOP_NAME(io),FALSE, SVt_PVFM);
1292 if (!topgv || !GvFORM(topgv)) {
1293 IoLINES_LEFT(io) = 100000000;
1294 goto forget_top;
1295 }
1296 IoTOP_GV(io) = topgv;
1297 }
748a9306
LW		 1298 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1299 I32 lines = IoLINES_LEFT(io);
3280af22 1300 char *s = SvPVX(PL_formtarget);
8e07c86e
AD		 1301 if (lines <= 0) /* Yow, header didn't even fit!!! */
1302 goto forget_top;
748a9306
LW		 1303 while (lines-- > 0) {
1304 s = strchr(s, '\n');
1305 if (!s)
1306 break;
1307 s++;
1308 }
1309 if (s) {
d75029d0
NIS		 1310 STRLEN save = SvCUR(PL_formtarget);
1311 SvCUR_set(PL_formtarget, s - SvPVX(PL_formtarget));
1312 do_print(PL_formtarget, ofp);
1313 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1314 sv_chop(PL_formtarget, s);
1315 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1316 }
1317 }
a0d0e21e 1318 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1319 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1320 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1321 IoPAGE(io)++;
3280af22 1322 PL_formtarget = PL_toptarget;
748a9306 1323 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1324 fgv = IoTOP_GV(io);
1325 if (!fgv)
cea2e8a9 1326 DIE(aTHX_ "bad top format reference");
4633a7c4 1327 cv = GvFORM(fgv);
2dd78f96
JH		 1328 {
1329 char *name = NULL;
1330 if (!cv) {
1331 SV *sv = sv_newmortal();
1332 gv_efullname4(sv, fgv, Nullch, FALSE);
1333 name = SvPV_nolen(sv);
1334 }
1335 if (name && *name)
1336 DIE(aTHX_ "Undefined top format \"%s\" called",name);
1337 /* why no:
1338 else
1339 DIE(aTHX_ "Undefined top format called");
1340 ?*/
4633a7c4 1341 }
44a8e56a 1342 if (CvCLONE(cv))
1343 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
533c011a 1344 return doform(cv,gv,PL_op);
a0d0e21e
LW		 1345 }
1346
1347 forget_top:
3280af22 1348 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1349 POPFORMAT(cx);
1350 LEAVE;
1351
1352 fp = IoOFP(io);
1353 if (!fp) {
599cee73 1354 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
cb50131a 1355 if (IoIFP(io)) {
2dd78f96
JH		 1356 /* integrate with report_evil_fh()? */
1357 char *name = NULL;
1358 if (isGV(gv)) {
1359 SV* sv = sv_newmortal();
1360 gv_efullname4(sv, gv, Nullch, FALSE);
1361 name = SvPV_nolen(sv);
1362 }
1363 if (name && *name)
9014280d 1364 Perl_warner(aTHX_ packWARN(WARN_IO),
2dd78f96
JH		 1365 "Filehandle %s opened only for input", name);
1366 else
9014280d 1367 Perl_warner(aTHX_ packWARN(WARN_IO),
2dd78f96 1368 "Filehandle opened only for input");
cb50131a 1369 }
599cee73 1370 else if (ckWARN(WARN_CLOSED))
bc37a18f 1371 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1372 }
3280af22 1373 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1374 }
1375 else {
3280af22 1376 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1377 if (ckWARN(WARN_IO))
9014280d 1378 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1379 }
d75029d0 1380 if (!do_print(PL_formtarget, fp))
3280af22 1381 PUSHs(&PL_sv_no);
a0d0e21e 1382 else {
3280af22
NIS		 1383 FmLINES(PL_formtarget) = 0;
1384 SvCUR_set(PL_formtarget, 0);
1385 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1386 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1387 (void)PerlIO_flush(fp);
3280af22 1388 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1389 }
1390 }
9cbac4c7 1391 /* bad_ofp: */
3280af22 1392 PL_formtarget = PL_bodytarget;
a0d0e21e
LW		 1393 PUTBACK;
1394 return pop_return();
1395}
1396
1397PP(pp_prtf)
1398{
39644a26 1399 dSP; dMARK; dORIGMARK;
a0d0e21e
LW		 1400 GV *gv;
1401 IO *io;
760ac839 1402 PerlIO *fp;
26db47c4 1403 SV *sv;
46fc3d4c 1404 MAGIC *mg;
a0d0e21e 1405
533c011a 1406 if (PL_op->op_flags & OPf_STACKED)
a0d0e21e
LW		 1407 gv = (GV*)*++MARK;
1408 else
3280af22 1409 gv = PL_defoutgv;
46fc3d4c 1410
5b468f54
AMS		 1411 if (gv && (io = GvIO(gv))
1412 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1413 {
46fc3d4c 1414 if (MARK == ORIGMARK) {
4352c267 1415 MEXTEND(SP, 1);
46fc3d4c 1416 ++MARK;
1417 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1418 ++SP;
1419 }
1420 PUSHMARK(MARK - 1);
5b468f54 1421 *MARK = SvTIED_obj((SV*)io, mg);
46fc3d4c 1422 PUTBACK;
1423 ENTER;
864dbfa3 1424 call_method("PRINTF", G_SCALAR);
46fc3d4c 1425 LEAVE;
1426 SPAGAIN;
1427 MARK = ORIGMARK + 1;
1428 *MARK = *SP;
1429 SP = MARK;
1430 RETURN;
1431 }
1432
26db47c4 1433 sv = NEWSV(0,0);
a0d0e21e 1434 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1435 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1436 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 1437 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 1438 goto just_say_no;
1439 }
1440 else if (!(fp = IoOFP(io))) {
599cee73 1441 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
2dd78f96 1442 /* integrate with report_evil_fh()? */
cb50131a 1443 if (IoIFP(io)) {
2dd78f96
JH		 1444 char *name = NULL;
1445 if (isGV(gv)) {
1446 gv_efullname4(sv, gv, Nullch, FALSE);
1447 name = SvPV_nolen(sv);
1448 }
1449 if (name && *name)
9014280d 1450 Perl_warner(aTHX_ packWARN(WARN_IO),
2dd78f96
JH		 1451 "Filehandle %s opened only for input", name);
1452 else
9014280d 1453 Perl_warner(aTHX_ packWARN(WARN_IO),
2dd78f96 1454 "Filehandle opened only for input");
cb50131a 1455 }
599cee73 1456 else if (ckWARN(WARN_CLOSED))
bc37a18f 1457 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1458 }
91487cfc 1459 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
a0d0e21e
LW		 1460 goto just_say_no;
1461 }
1462 else {
1463 do_sprintf(sv, SP - MARK, MARK + 1);
1464 if (!do_print(sv, fp))
1465 goto just_say_no;
1466
1467 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1468 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1469 goto just_say_no;
1470 }
1471 SvREFCNT_dec(sv);
1472 SP = ORIGMARK;
3280af22 1473 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1474 RETURN;
1475
1476 just_say_no:
1477 SvREFCNT_dec(sv);
1478 SP = ORIGMARK;
3280af22 1479 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1480 RETURN;
1481}
1482
c07a80fd 1483PP(pp_sysopen)
1484{
39644a26 1485 dSP;
c07a80fd 1486 GV *gv;
c07a80fd 1487 SV *sv;
1488 char *tmps;
1489 STRLEN len;
1490 int mode, perm;
1491
1492 if (MAXARG > 3)
1493 perm = POPi;
1494 else
1495 perm = 0666;
1496 mode = POPi;
1497 sv = POPs;
1498 gv = (GV *)POPs;
1499
4592e6ca
NIS		 1500 /* Need TIEHANDLE method ? */
1501
c07a80fd 1502 tmps = SvPV(sv, len);
1503 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1504 IoLINES(GvIOp(gv)) = 0;
3280af22 1505 PUSHs(&PL_sv_yes);
c07a80fd 1506 }
1507 else {
3280af22 1508 PUSHs(&PL_sv_undef);
c07a80fd 1509 }
1510 RETURN;
1511}
1512
a0d0e21e
LW		 1513PP(pp_sysread)
1514{
39644a26 1515 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1516 int offset;
1517 GV *gv;
1518 IO *io;
1519 char *buffer;
5b54f415 1520 SSize_t length;
eb5c063a 1521 SSize_t count;
1e422769 1522 Sock_size_t bufsize;
748a9306 1523 SV *bufsv;
a0d0e21e 1524 STRLEN blen;
2ae324a7 1525 MAGIC *mg;
eb5c063a
NIS		 1526 int fp_utf8;
1527 Size_t got = 0;
1528 Size_t wanted;
1d636c13 1529 bool charstart = FALSE;
87330c3c
JH		 1530 STRLEN charskip = 0;
1531 STRLEN skip = 0;
a0d0e21e
LW		 1532
1533 gv = (GV*)*++MARK;
5b468f54
AMS		 1534 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1535 && gv && (io = GvIO(gv))
1536 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
137443ea 1537 {
2ae324a7 1538 SV *sv;
1539
1540 PUSHMARK(MARK-1);
5b468f54 1541 *MARK = SvTIED_obj((SV*)io, mg);
2ae324a7 1542 ENTER;
864dbfa3 1543 call_method("READ", G_SCALAR);
2ae324a7 1544 LEAVE;
1545 SPAGAIN;
1546 sv = POPs;
1547 SP = ORIGMARK;
1548 PUSHs(sv);
1549 RETURN;
1550 }
1551
a0d0e21e
LW		 1552 if (!gv)
1553 goto say_undef;
748a9306 1554 bufsv = *++MARK;
ff68c719 1555 if (! SvOK(bufsv))
1556 sv_setpvn(bufsv, "", 0);
a0d0e21e 1557 length = SvIVx(*++MARK);
748a9306 1558 SETERRNO(0,0);
a0d0e21e
LW		 1559 if (MARK < SP)
1560 offset = SvIVx(*++MARK);
1561 else
1562 offset = 0;
1563 io = GvIO(gv);
1564 if (!io || !IoIFP(io))
1565 goto say_undef;
0064a8a9 1566 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1567 buffer = SvPVutf8_force(bufsv, blen);
eb5c063a
NIS		 1568 /* UTF8 may not have been set if they are all low bytes */
1569 SvUTF8_on(bufsv);
7d59b7e4
NIS		 1570 }
1571 else {
1572 buffer = SvPV_force(bufsv, blen);
1573 }
1574 if (length < 0)
1575 DIE(aTHX_ "Negative length");
eb5c063a 1576 wanted = length;
7d59b7e4 1577
d0965105
JH		 1578 charstart = TRUE;
1579 charskip = 0;
87330c3c 1580 skip = 0;
d0965105 1581
a0d0e21e 1582#ifdef HAS_SOCKET
533c011a 1583 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1584 char namebuf[MAXPATHLEN];
eec2d3df 1585#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE)
490ab354
JH		 1586 bufsize = sizeof (struct sockaddr_in);
1587#else
46fc3d4c 1588 bufsize = sizeof namebuf;
490ab354 1589#endif
abf95952
IZ		 1590#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1591 if (bufsize >= 256)
1592 bufsize = 255;
1593#endif
748a9306 1594 buffer = SvGROW(bufsv, length+1);
bbce6d69 1595 /* 'offset' means 'flags' here */
eb5c063a 1596 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
46fc3d4c 1597 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1598 if (count < 0)
a0d0e21e 1599 RETPUSHUNDEF;
4107cc59
OF		 1600#ifdef EPOC
1601 /* Bogus return without padding */
1602 bufsize = sizeof (struct sockaddr_in);
1603#endif
eb5c063a 1604 SvCUR_set(bufsv, count);
748a9306
LW		 1605 *SvEND(bufsv) = '\0';
1606 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1607 if (fp_utf8)
1608 SvUTF8_on(bufsv);
748a9306 1609 SvSETMAGIC(bufsv);
aac0dd9a 1610 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1611 if (!(IoFLAGS(io) & IOf_UNTAINT))
1612 SvTAINTED_on(bufsv);
a0d0e21e 1613 SP = ORIGMARK;
46fc3d4c 1614 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1615 PUSHs(TARG);
1616 RETURN;
1617 }
1618#else
911d147d 1619 if (PL_op->op_type == OP_RECV)
cea2e8a9 1620 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1621#endif
eb5c063a
NIS		 1622 if (DO_UTF8(bufsv)) {
1623 /* offset adjust in characters not bytes */
1624 blen = sv_len_utf8(bufsv);
7d59b7e4 1625 }
bbce6d69 1626 if (offset < 0) {
1627 if (-offset > blen)
cea2e8a9 1628 DIE(aTHX_ "Offset outside string");
bbce6d69 1629 offset += blen;
1630 }
eb5c063a
NIS		 1631 if (DO_UTF8(bufsv)) {
1632 /* convert offset-as-chars to offset-as-bytes */
1633 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1634 }
1635 more_bytes:
cd52b7b2 1636 bufsize = SvCUR(bufsv);
eb5c063a 1637 buffer = SvGROW(bufsv, length+offset+1);
cd52b7b2 1638 if (offset > bufsize) { /* Zero any newly allocated space */
1639 Zero(buffer+bufsize, offset-bufsize, char);
1640 }
eb5c063a
NIS		 1641 buffer = buffer + offset;
1642
533c011a 1643 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1644#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1645 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1646 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1647 buffer, length, 0);
a7092146
GS		 1648 }
1649 else
1650#endif
1651 {
eb5c063a
NIS		 1652 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1653 buffer, length);
a7092146 1654 }
a0d0e21e
LW		 1655 }
1656 else
1657#ifdef HAS_SOCKET__bad_code_maybe
50952442 1658 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1659 char namebuf[MAXPATHLEN];
490ab354
JH		 1660#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1661 bufsize = sizeof (struct sockaddr_in);
1662#else
46fc3d4c 1663 bufsize = sizeof namebuf;
490ab354 1664#endif
eb5c063a 1665 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1666 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1667 }
1668 else
1669#endif
3b02c43c 1670 {
eb5c063a
NIS		 1671 count = PerlIO_read(IoIFP(io), buffer, length);
1672 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1673 if (count == 0 && PerlIO_error(IoIFP(io)))
1674 count = -1;
3b02c43c 1675 }
eb5c063a 1676 if (count < 0) {
a00b5bd3 1677 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
af8c498a 1678 {
2dd78f96
JH		 1679 /* integrate with report_evil_fh()? */
1680 char *name = NULL;
1681 if (isGV(gv)) {
1682 SV* sv = sv_newmortal();
1683 gv_efullname4(sv, gv, Nullch, FALSE);
1684 name = SvPV_nolen(sv);
1685 }
1686 if (name && *name)
9014280d 1687 Perl_warner(aTHX_ packWARN(WARN_IO),
2dd78f96
JH		 1688 "Filehandle %s opened only for output", name);
1689 else
9014280d 1690 Perl_warner(aTHX_ packWARN(WARN_IO),
2dd78f96 1691 "Filehandle opened only for output");
af8c498a 1692 }
a0d0e21e 1693 goto say_undef;
af8c498a 1694 }
eb5c063a 1695 SvCUR_set(bufsv, count+(buffer - SvPVX(bufsv)));
748a9306
LW		 1696 *SvEND(bufsv) = '\0';
1697 (void)SvPOK_only(bufsv);
0064a8a9 1698 if (fp_utf8 && !IN_BYTES) {
eb5c063a
NIS		 1699 /* Look at utf8 we got back and count the characters */
1700 char *bend = buffer + count;
1701 while (buffer < bend) {
d0965105
JH		 1702 if (charstart) {
1703 skip = UTF8SKIP(buffer);
1704 charskip = 0;
1705 }
1706 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1707 /* partial character - try for rest of it */
1708 length = skip - (bend-buffer);
1709 offset = bend - SvPVX(bufsv);
d0965105
JH		 1710 charstart = FALSE;
1711 charskip += count;
eb5c063a
NIS		 1712 goto more_bytes;
1713 }
1714 else {
1715 got++;
1716 buffer += skip;
d0965105
JH		 1717 charstart = TRUE;
1718 charskip = 0;
eb5c063a
NIS		 1719 }
1720 }
1721 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1722 provided amount read (count) was what was requested (length)
1723 */
1724 if (got < wanted && count == length) {
d0965105 1725 length = wanted - got;
eb5c063a
NIS		 1726 offset = bend - SvPVX(bufsv);
1727 goto more_bytes;
1728 }
1729 /* return value is character count */
1730 count = got;
1731 SvUTF8_on(bufsv);
1732 }
748a9306 1733 SvSETMAGIC(bufsv);
aac0dd9a 1734 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1735 if (!(IoFLAGS(io) & IOf_UNTAINT))
1736 SvTAINTED_on(bufsv);
a0d0e21e 1737 SP = ORIGMARK;
eb5c063a 1738 PUSHi(count);
a0d0e21e
LW		 1739 RETURN;
1740
1741 say_undef:
1742 SP = ORIGMARK;
1743 RETPUSHUNDEF;
1744}
1745
1746PP(pp_syswrite)
1747{
39644a26 1748 dSP;
092bebab
JH		 1749 int items = (SP - PL_stack_base) - TOPMARK;
1750 if (items == 2) {
9f089d78 1751 SV *sv;
092bebab 1752 EXTEND(SP, 1);
9f089d78
SB		 1753 sv = sv_2mortal(newSViv(sv_len(*SP)));
1754 PUSHs(sv);
092bebab
JH		 1755 PUTBACK;
1756 }
cea2e8a9 1757 return pp_send();
a0d0e21e
LW		 1758}
1759
1760PP(pp_send)
1761{
39644a26 1762 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1763 GV *gv;
1764 IO *io;
748a9306 1765 SV *bufsv;
a0d0e21e 1766 char *buffer;
8c99d73e
GS		 1767 Size_t length;
1768 SSize_t retval;
a0d0e21e 1769 STRLEN blen;
1d603a67 1770 MAGIC *mg;
a0d0e21e
LW		 1771
1772 gv = (GV*)*++MARK;
14befaf4 1773 if (PL_op->op_type == OP_SYSWRITE
5b468f54
AMS		 1774 && gv && (io = GvIO(gv))
1775 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
14befaf4 1776 {
1d603a67
GB		 1777 SV *sv;
1778
1779 PUSHMARK(MARK-1);
5b468f54 1780 *MARK = SvTIED_obj((SV*)io, mg);
1d603a67 1781 ENTER;
864dbfa3 1782 call_method("WRITE", G_SCALAR);
1d603a67
GB		 1783 LEAVE;
1784 SPAGAIN;
1785 sv = POPs;
1786 SP = ORIGMARK;
1787 PUSHs(sv);
1788 RETURN;
1789 }
a0d0e21e
LW		 1790 if (!gv)
1791 goto say_undef;
748a9306 1792 bufsv = *++MARK;
8c99d73e 1793#if Size_t_size > IVSIZE
3c001241 1794 length = (Size_t)SvNVx(*++MARK);
146174a9 1795#else
3c001241 1796 length = (Size_t)SvIVx(*++MARK);
146174a9 1797#endif
3c001241 1798 if ((SSize_t)length < 0)
cea2e8a9 1799 DIE(aTHX_ "Negative length");
748a9306 1800 SETERRNO(0,0);
a0d0e21e
LW		 1801 io = GvIO(gv);
1802 if (!io || !IoIFP(io)) {
8c99d73e 1803 retval = -1;
bc37a18f
RG		 1804 if (ckWARN(WARN_CLOSED))
1805 report_evil_fh(gv, io, PL_op->op_type);
7d59b7e4
NIS		 1806 goto say_undef;
1807 }
1808
1809 if (PerlIO_isutf8(IoIFP(io))) {
1810 buffer = SvPVutf8(bufsv, blen);
a0d0e21e 1811 }
7d59b7e4
NIS		 1812 else {
1813 if (DO_UTF8(bufsv))
1814 sv_utf8_downgrade(bufsv, FALSE);
1815 buffer = SvPV(bufsv, blen);
1816 }
1817
1818 if (PL_op->op_type == OP_SYSWRITE) {
1819 IV offset;
1820 if (DO_UTF8(bufsv)) {
1821 /* length and offset are in chars */
1822 blen = sv_len_utf8(bufsv);
1823 }
bbce6d69 1824 if (MARK < SP) {
a0d0e21e 1825 offset = SvIVx(*++MARK);
bbce6d69 1826 if (offset < 0) {
1827 if (-offset > blen)
cea2e8a9 1828 DIE(aTHX_ "Offset outside string");
bbce6d69 1829 offset += blen;
fb73857a 1830 } else if (offset >= blen && blen > 0)
cea2e8a9 1831 DIE(aTHX_ "Offset outside string");
bbce6d69 1832 } else
a0d0e21e
LW		 1833 offset = 0;
1834 if (length > blen - offset)
1835 length = blen - offset;
7d59b7e4 1836 if (DO_UTF8(bufsv)) {
c8d31a35 1837 buffer = (char*)utf8_hop((U8 *)buffer, offset);
7d59b7e4
NIS		 1838 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1839 }
1840 else {
1841 buffer = buffer+offset;
1842 }
a7092146 1843#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1844 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1845 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1846 buffer, length, 0);
a7092146
GS		 1847 }
1848 else
1849#endif
1850 {
94e4c244 1851 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1852 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1853 buffer, length);
a7092146 1854 }
a0d0e21e
LW		 1855 }
1856#ifdef HAS_SOCKET
1857 else if (SP > MARK) {
1858 char *sockbuf;
1859 STRLEN mlen;
1860 sockbuf = SvPVx(*++MARK, mlen);
7d59b7e4 1861 /* length is really flags */
8c99d73e
GS		 1862 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1863 length, (struct sockaddr *)sockbuf, mlen);
a0d0e21e
LW		 1864 }
1865 else
7d59b7e4 1866 /* length is really flags */
8c99d73e 1867 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
a0d0e21e
LW		 1868#else
1869 else
cea2e8a9 1870 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1871#endif
8c99d73e 1872 if (retval < 0)
a0d0e21e
LW		 1873 goto say_undef;
1874 SP = ORIGMARK;
f36eea10
JH		 1875 if (DO_UTF8(bufsv))
1876 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
8c99d73e
GS		 1877#if Size_t_size > IVSIZE
1878 PUSHn(retval);
1879#else
1880 PUSHi(retval);
1881#endif
a0d0e21e
LW		 1882 RETURN;
1883
1884 say_undef:
1885 SP = ORIGMARK;
1886 RETPUSHUNDEF;
1887}
1888
1889PP(pp_recv)
1890{
cea2e8a9 1891 return pp_sysread();
a0d0e21e
LW		 1892}
1893
1894PP(pp_eof)
1895{
39644a26 1896 dSP;
a0d0e21e 1897 GV *gv;
5b468f54 1898 IO *io;
4592e6ca 1899 MAGIC *mg;
a0d0e21e 1900
32da55ab 1901 if (MAXARG == 0) {
146174a9
CB		 1902 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1903 IO *io;
ed2c6b9b 1904 gv = PL_last_in_gv = GvEGV(PL_argvgv);
146174a9
CB		 1905 io = GvIO(gv);
1906 if (io && !IoIFP(io)) {
1907 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1908 IoLINES(io) = 0;
1909 IoFLAGS(io) &= ~IOf_START;
1910 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
1911 sv_setpvn(GvSV(gv), "-", 1);
1912 SvSETMAGIC(GvSV(gv));
1913 }
1914 else if (!nextargv(gv))
1915 RETPUSHYES;
1916 }
1917 }
1918 else
1919 gv = PL_last_in_gv; /* eof */
1920 }
a0d0e21e 1921 else
146174a9 1922 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 1923
5b468f54
AMS		 1924 if (gv && (io = GvIO(gv))
1925 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1926 {
4592e6ca 1927 PUSHMARK(SP);
5b468f54 1928 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1929 PUTBACK;
1930 ENTER;
864dbfa3 1931 call_method("EOF", G_SCALAR);
4592e6ca
NIS		 1932 LEAVE;
1933 SPAGAIN;
1934 RETURN;
1935 }
1936
54310121 1937 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 1938 RETURN;
1939}
1940
1941PP(pp_tell)
1942{
39644a26 1943 dSP; dTARGET;
301e8125 1944 GV *gv;
5b468f54 1945 IO *io;
4592e6ca 1946 MAGIC *mg;
a0d0e21e 1947
32da55ab 1948 if (MAXARG == 0)
3280af22 1949 gv = PL_last_in_gv;
a0d0e21e 1950 else
3280af22 1951 gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 1952
5b468f54
AMS		 1953 if (gv && (io = GvIO(gv))
1954 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1955 {
4592e6ca 1956 PUSHMARK(SP);
5b468f54 1957 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1958 PUTBACK;
1959 ENTER;
864dbfa3 1960 call_method("TELL", G_SCALAR);
4592e6ca
NIS		 1961 LEAVE;
1962 SPAGAIN;
1963 RETURN;
1964 }
1965
146174a9
CB		 1966#if LSEEKSIZE > IVSIZE
1967 PUSHn( do_tell(gv) );
1968#else
a0d0e21e 1969 PUSHi( do_tell(gv) );
146174a9 1970#endif
a0d0e21e
LW		 1971 RETURN;
1972}
1973
1974PP(pp_seek)
1975{
cea2e8a9 1976 return pp_sysseek();
137443ea 1977}
1978
1979PP(pp_sysseek)
1980{
39644a26 1981 dSP;
a0d0e21e 1982 GV *gv;
5b468f54 1983 IO *io;
a0d0e21e 1984 int whence = POPi;
146174a9
CB		 1985#if LSEEKSIZE > IVSIZE
1986 Off_t offset = (Off_t)SvNVx(POPs);
1987#else
d9b3e12d 1988 Off_t offset = (Off_t)SvIVx(POPs);
146174a9 1989#endif
4592e6ca 1990 MAGIC *mg;
a0d0e21e 1991
3280af22 1992 gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 1993
5b468f54
AMS		 1994 if (gv && (io = GvIO(gv))
1995 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1996 {
4592e6ca 1997 PUSHMARK(SP);
5b468f54 1998 XPUSHs(SvTIED_obj((SV*)io, mg));
cb50131a
CB		 1999#if LSEEKSIZE > IVSIZE
2000 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
2001#else
b448e4fe 2002 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 2003#endif
b448e4fe 2004 XPUSHs(sv_2mortal(newSViv(whence)));
4592e6ca
NIS		 2005 PUTBACK;
2006 ENTER;
864dbfa3 2007 call_method("SEEK", G_SCALAR);
4592e6ca
NIS		 2008 LEAVE;
2009 SPAGAIN;
2010 RETURN;
2011 }
2012
533c011a 2013 if (PL_op->op_type == OP_SEEK)
8903cb82 2014 PUSHs(boolSV(do_seek(gv, offset, whence)));
2015 else {
b448e4fe
JH		 2016 Off_t sought = do_sysseek(gv, offset, whence);
2017 if (sought < 0)
146174a9
CB		 2018 PUSHs(&PL_sv_undef);
2019 else {
b448e4fe 2020 SV* sv = sought ?
146174a9 2021#if LSEEKSIZE > IVSIZE
b448e4fe 2022 newSVnv((NV)sought)
146174a9 2023#else
b448e4fe 2024 newSViv(sought)
146174a9
CB		 2025#endif
2026 : newSVpvn(zero_but_true, ZBTLEN);
2027 PUSHs(sv_2mortal(sv));
2028 }
8903cb82 2029 }
a0d0e21e
LW		 2030 RETURN;
2031}
2032
2033PP(pp_truncate)
2034{
39644a26 2035 dSP;
8c99d73e
GS		 2036 /* There seems to be no consensus on the length type of truncate()
2037 * and ftruncate(), both off_t and size_t have supporters. In
2038 * general one would think that when using large files, off_t is
2039 * at least as wide as size_t, so using an off_t should be okay. */
2040 /* XXX Configure probe for the length type of *truncate() needed XXX */
2041 Off_t len;
a0d0e21e 2042
8c99d73e
GS		 2043#if Size_t_size > IVSIZE
2044 len = (Off_t)POPn;
2045#else
2046 len = (Off_t)POPi;
2047#endif
2048 /* Checking for length < 0 is problematic as the type might or
301e8125 2049 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2050 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2051 SETERRNO(0,0);
5d94fbed 2052#if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) || defined(F_FREESP)
d05c1ba0
JH		 2053 {
2054 STRLEN n_a;
2055 int result = 1;
2056 GV *tmpgv;
2057
2058 if (PL_op->op_flags & OPf_SPECIAL) {
2059 tmpgv = gv_fetchpv(POPpx, FALSE, SVt_PVIO);
2060
2061 do_ftruncate:
2062 TAINT_PROPER("truncate");
2063 if (!GvIO(tmpgv) || !IoIFP(GvIOp(tmpgv)))
2064 result = 0;
2065 else {
2066 PerlIO_flush(IoIFP(GvIOp(tmpgv)));
cbdc8872 2067#ifdef HAS_TRUNCATE
d05c1ba0 2068 if (ftruncate(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
301e8125 2069#else
d05c1ba0 2070 if (my_chsize(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
cbdc8872 2071#endif
d05c1ba0
JH		 2072 result = 0;
2073 }
cbdc8872 2074 }
d05c1ba0
JH		 2075 else {
2076 SV *sv = POPs;
2077 char *name;
72f496dc 2078
d05c1ba0
JH		 2079 if (SvTYPE(sv) == SVt_PVGV) {
2080 tmpgv = (GV*)sv; /* *main::FRED for example */
2081 goto do_ftruncate;
2082 }
2083 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2084 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2085 goto do_ftruncate;
2086 }
1e422769 2087
d05c1ba0
JH		 2088 name = SvPV(sv, n_a);
2089 TAINT_PROPER("truncate");
cbdc8872 2090#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2091 if (truncate(name, len) < 0)
2092 result = 0;
cbdc8872 2093#else
d05c1ba0
JH		 2094 {
2095 int tmpfd;
2096
2097 if ((tmpfd = PerlLIO_open(name, O_RDWR)) < 0)
cbdc8872 2098 result = 0;
d05c1ba0
JH		 2099 else {
2100 if (my_chsize(tmpfd, len) < 0)
2101 result = 0;
2102 PerlLIO_close(tmpfd);
2103 }
cbdc8872 2104 }
a0d0e21e 2105#endif
d05c1ba0 2106 }
a0d0e21e 2107
d05c1ba0
JH		 2108 if (result)
2109 RETPUSHYES;
2110 if (!errno)
91487cfc 2111 SETERRNO(EBADF,RMS$_IFI);
d05c1ba0
JH		 2112 RETPUSHUNDEF;
2113 }
a0d0e21e 2114#else
cea2e8a9 2115 DIE(aTHX_ "truncate not implemented");
a0d0e21e
LW		 2116#endif
2117}
2118
2119PP(pp_fcntl)
2120{
cea2e8a9 2121 return pp_ioctl();
a0d0e21e
LW		 2122}
2123
2124PP(pp_ioctl)
2125{
39644a26 2126 dSP; dTARGET;
748a9306 2127 SV *argsv = POPs;
3bb7c1b4 2128 unsigned int func = POPu;
533c011a 2129 int optype = PL_op->op_type;
a0d0e21e 2130 char *s;
324aa91a 2131 IV retval;
a0d0e21e 2132 GV *gv = (GV*)POPs;
c289d2f7 2133 IO *io = gv ? GvIOn(gv) : 0;
a0d0e21e 2134
748a9306 2135 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2136 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2137 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2138 SETERRNO(EBADF,RMS$_IFI); /* well, sort of... */
a0d0e21e
LW		 2139 RETPUSHUNDEF;
2140 }
2141
748a9306 2142 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2143 STRLEN len;
324aa91a 2144 STRLEN need;
748a9306 2145 s = SvPV_force(argsv, len);
324aa91a
HF		 2146 need = IOCPARM_LEN(func);
2147 if (len < need) {
2148 s = Sv_Grow(argsv, need + 1);
2149 SvCUR_set(argsv, need);
a0d0e21e
LW		 2150 }
2151
748a9306 2152 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2153 }
2154 else {
748a9306 2155 retval = SvIV(argsv);
c529f79d 2156 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2157 }
2158
2159 TAINT_PROPER(optype == OP_IOCTL ? "ioctl" : "fcntl");
2160
2161 if (optype == OP_IOCTL)
2162#ifdef HAS_IOCTL
76e3520e 2163 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2164#else
cea2e8a9 2165 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2166#endif
2167 else
55497cff 2168#ifdef HAS_FCNTL
2169#if defined(OS2) && defined(__EMX__)
760ac839 2170 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2171#else
760ac839 2172 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2173#endif
55497cff 2174#else
cea2e8a9 2175 DIE(aTHX_ "fcntl is not implemented");
a0d0e21e
LW		 2176#endif
2177
748a9306
LW		 2178 if (SvPOK(argsv)) {
2179 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2180 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2181 OP_NAME(PL_op));
748a9306
LW		 2182 s[SvCUR(argsv)] = 0; /* put our null back */
2183 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2184 }
2185
2186 if (retval == -1)
2187 RETPUSHUNDEF;
2188 if (retval != 0) {
2189 PUSHi(retval);
2190 }
2191 else {
8903cb82 2192 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e
LW		 2193 }
2194 RETURN;
2195}
2196
2197PP(pp_flock)
2198{
9cad6237 2199#ifdef FLOCK
39644a26 2200 dSP; dTARGET;
a0d0e21e
LW		 2201 I32 value;
2202 int argtype;
2203 GV *gv;
bc37a18f 2204 IO *io = NULL;
760ac839 2205 PerlIO *fp;
16d20bd9 2206
a0d0e21e 2207 argtype = POPi;
32da55ab 2208 if (MAXARG == 0)
3280af22 2209 gv = PL_last_in_gv;
a0d0e21e
LW		 2210 else
2211 gv = (GV*)POPs;
bc37a18f
RG		 2212 if (gv && (io = GvIO(gv)))
2213 fp = IoIFP(io);
2214 else {
a0d0e21e 2215 fp = Nullfp;
bc37a18f
RG		 2216 io = NULL;
2217 }
a0d0e21e 2218 if (fp) {
68dc0745 2219 (void)PerlIO_flush(fp);
76e3520e 2220 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2221 }
cb50131a 2222 else {
bc37a18f
RG		 2223 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2224 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2225 value = 0;
91487cfc 2226 SETERRNO(EBADF,RMS$_IFI);
cb50131a 2227 }
a0d0e21e
LW		 2228 PUSHi(value);
2229 RETURN;
2230#else
cea2e8a9 2231 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2232#endif
2233}
2234
2235/* Sockets. */
2236
2237PP(pp_socket)
2238{
a0d0e21e 2239#ifdef HAS_SOCKET
9cad6237 2240 dSP;
a0d0e21e
LW		 2241 GV *gv;
2242 register IO *io;
2243 int protocol = POPi;
2244 int type = POPi;
2245 int domain = POPi;
2246 int fd;
2247
2248 gv = (GV*)POPs;
c289d2f7 2249 io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2250
c289d2f7
JH		 2251 if (!gv || !io) {
2252 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2253 report_evil_fh(gv, io, PL_op->op_type);
2254 if (IoIFP(io))
2255 do_close(gv, FALSE);
91487cfc 2256 SETERRNO(EBADF,LIB$_INVARG);
a0d0e21e
LW		 2257 RETPUSHUNDEF;
2258 }
2259
57171420
BS		 2260 if (IoIFP(io))
2261 do_close(gv, FALSE);
2262
a0d0e21e 2263 TAINT_PROPER("socket");
6ad3d225 2264 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2265 if (fd < 0)
2266 RETPUSHUNDEF;
760ac839
LW		 2267 IoIFP(io) = PerlIO_fdopen(fd, "r"); /* stdio gets confused about sockets */
2268 IoOFP(io) = PerlIO_fdopen(fd, "w");
50952442 2269 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2270 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2271 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2272 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2273 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2274 RETPUSHUNDEF;
2275 }
8d2a6795
GS		 2276#if defined(HAS_FCNTL) && defined(F_SETFD)
2277 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2278#endif
a0d0e21e 2279
d5ff79b3
OF		 2280#ifdef EPOC
2281 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2282#endif
2283
a0d0e21e
LW		 2284 RETPUSHYES;
2285#else
cea2e8a9 2286 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2287#endif
2288}
2289
2290PP(pp_sockpair)
2291{
83ad58fb 2292#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
76ffd3b9 2293 dSP;
a0d0e21e
LW		 2294 GV *gv1;
2295 GV *gv2;
2296 register IO *io1;
2297 register IO *io2;
2298 int protocol = POPi;
2299 int type = POPi;
2300 int domain = POPi;
2301 int fd[2];
2302
2303 gv2 = (GV*)POPs;
2304 gv1 = (GV*)POPs;
c289d2f7
JH		 2305 io1 = gv1 ? GvIOn(gv1) : NULL;
2306 io2 = gv2 ? GvIOn(gv2) : NULL;
2307 if (!gv1 || !gv2 || !io1 || !io2) {
2308 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2309 if (!gv1 || !io1)
2310 report_evil_fh(gv1, io1, PL_op->op_type);
2311 if (!gv2 || !io2)
2312 report_evil_fh(gv1, io2, PL_op->op_type);
2313 }
2314 if (IoIFP(io1))
2315 do_close(gv1, FALSE);
2316 if (IoIFP(io2))
2317 do_close(gv2, FALSE);
a0d0e21e 2318 RETPUSHUNDEF;
c289d2f7 2319 }
a0d0e21e 2320
dc0d0a5f
JH		 2321 if (IoIFP(io1))
2322 do_close(gv1, FALSE);
2323 if (IoIFP(io2))
2324 do_close(gv2, FALSE);
57171420 2325
a0d0e21e 2326 TAINT_PROPER("socketpair");
6ad3d225 2327 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2328 RETPUSHUNDEF;
760ac839
LW		 2329 IoIFP(io1) = PerlIO_fdopen(fd[0], "r");
2330 IoOFP(io1) = PerlIO_fdopen(fd[0], "w");
50952442 2331 IoTYPE(io1) = IoTYPE_SOCKET;
760ac839
LW		 2332 IoIFP(io2) = PerlIO_fdopen(fd[1], "r");
2333 IoOFP(io2) = PerlIO_fdopen(fd[1], "w");
50952442 2334 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2335 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2336 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2337 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2338 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2339 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2340 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2341 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2342 RETPUSHUNDEF;
2343 }
8d2a6795
GS		 2344#if defined(HAS_FCNTL) && defined(F_SETFD)
2345 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2346 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2347#endif
a0d0e21e
LW		 2348
2349 RETPUSHYES;
2350#else
cea2e8a9 2351 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2352#endif
2353}
2354
2355PP(pp_bind)
2356{
a0d0e21e 2357#ifdef HAS_SOCKET
9cad6237 2358 dSP;
eec2d3df 2359#ifdef MPE /* Requires PRIV mode to bind() to ports < 1024 */
82b3da69
JH		 2360 extern void GETPRIVMODE();
2361 extern void GETUSERMODE();
eec2d3df 2362#endif
748a9306 2363 SV *addrsv = POPs;
a0d0e21e
LW		 2364 char *addr;
2365 GV *gv = (GV*)POPs;
2366 register IO *io = GvIOn(gv);
2367 STRLEN len;
eec2d3df
GS		 2368 int bind_ok = 0;
2369#ifdef MPE
2370 int mpeprivmode = 0;
2371#endif
a0d0e21e
LW		 2372
2373 if (!io || !IoIFP(io))
2374 goto nuts;
2375
748a9306 2376 addr = SvPV(addrsv, len);
a0d0e21e 2377 TAINT_PROPER("bind");
eec2d3df
GS		 2378#ifdef MPE /* Deal with MPE bind() peculiarities */
2379 if (((struct sockaddr *)addr)->sa_family == AF_INET) {
2380 /* The address *MUST* stupidly be zero. */
2381 ((struct sockaddr_in *)addr)->sin_addr.s_addr = INADDR_ANY;
2382 /* PRIV mode is required to bind() to ports < 1024. */
2383 if (((struct sockaddr_in *)addr)->sin_port < 1024 &&
2384 ((struct sockaddr_in *)addr)->sin_port > 0) {
2385 GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
2386 mpeprivmode = 1;
2387 }
2388 }
2389#endif /* MPE */
2390 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2391 (struct sockaddr *)addr, len) >= 0)
2392 bind_ok = 1;
2393
2394#ifdef MPE /* Switch back to USER mode */
2395 if (mpeprivmode)
2396 GETUSERMODE();
2397#endif /* MPE */
2398
2399 if (bind_ok)
a0d0e21e
LW		 2400 RETPUSHYES;
2401 else
2402 RETPUSHUNDEF;
2403
2404nuts:
599cee73 2405 if (ckWARN(WARN_CLOSED))
bc37a18f 2406 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2407 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2408 RETPUSHUNDEF;
2409#else
cea2e8a9 2410 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2411#endif
2412}
2413
2414PP(pp_connect)
2415{
a0d0e21e 2416#ifdef HAS_SOCKET
9cad6237 2417 dSP;
748a9306 2418 SV *addrsv = POPs;
a0d0e21e
LW		 2419 char *addr;
2420 GV *gv = (GV*)POPs;
2421 register IO *io = GvIOn(gv);
2422 STRLEN len;
2423
2424 if (!io || !IoIFP(io))
2425 goto nuts;
2426
748a9306 2427 addr = SvPV(addrsv, len);
a0d0e21e 2428 TAINT_PROPER("connect");
6ad3d225 2429 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2430 RETPUSHYES;
2431 else
2432 RETPUSHUNDEF;
2433
2434nuts:
599cee73 2435 if (ckWARN(WARN_CLOSED))
bc37a18f 2436 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2437 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2438 RETPUSHUNDEF;
2439#else
cea2e8a9 2440 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2441#endif
2442}
2443
2444PP(pp_listen)
2445{
a0d0e21e 2446#ifdef HAS_SOCKET
9cad6237 2447 dSP;
a0d0e21e
LW		 2448 int backlog = POPi;
2449 GV *gv = (GV*)POPs;
c289d2f7 2450 register IO *io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2451
c289d2f7 2452 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2453 goto nuts;
2454
6ad3d225 2455 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2456 RETPUSHYES;
2457 else
2458 RETPUSHUNDEF;
2459
2460nuts:
599cee73 2461 if (ckWARN(WARN_CLOSED))
bc37a18f 2462 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2463 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2464 RETPUSHUNDEF;
2465#else
cea2e8a9 2466 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2467#endif
2468}
2469
2470PP(pp_accept)
2471{
a0d0e21e 2472#ifdef HAS_SOCKET
9cad6237 2473 dSP; dTARGET;
a0d0e21e
LW		 2474 GV *ngv;
2475 GV *ggv;
2476 register IO *nstio;
2477 register IO *gstio;
4633a7c4 2478 struct sockaddr saddr; /* use a struct to avoid alignment problems */
1e422769 2479 Sock_size_t len = sizeof saddr;
a0d0e21e 2480 int fd;
72f496dc 2481 int fd2;
a0d0e21e
LW		 2482
2483 ggv = (GV*)POPs;
2484 ngv = (GV*)POPs;
2485
2486 if (!ngv)
2487 goto badexit;
2488 if (!ggv)
2489 goto nuts;
2490
2491 gstio = GvIO(ggv);
2492 if (!gstio || !IoIFP(gstio))
2493 goto nuts;
2494
2495 nstio = GvIOn(ngv);
6ad3d225 2496 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *)&saddr, &len);
a0d0e21e
LW		 2497 if (fd < 0)
2498 goto badexit;
a70048fb
AB		 2499 if (IoIFP(nstio))
2500 do_close(ngv, FALSE);
760ac839 2501 IoIFP(nstio) = PerlIO_fdopen(fd, "r");
72f496dc
NIS		 2502 /* FIXME: we dup(fd) here so that refcounting of fd's does not inhibit
2503 fclose of IoOFP's FILE * - and hence leak memory.
2504 Special treatment of _this_ case of IoIFP != IoOFP seems wrong.
2505 */
2506 IoOFP(nstio) = PerlIO_fdopen(fd2 = PerlLIO_dup(fd), "w");
50952442 2507 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2508 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2509 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2510 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2511 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2512 goto badexit;
2513 }
8d2a6795
GS		 2514#if defined(HAS_FCNTL) && defined(F_SETFD)
2515 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
72f496dc 2516 fcntl(fd2, F_SETFD, fd2 > PL_maxsysfd); /* ensure close-on-exec */
8d2a6795 2517#endif
a0d0e21e 2518
ed79a026 2519#ifdef EPOC
a9f1f6b0
OF		 2520 len = sizeof saddr; /* EPOC somehow truncates info */
2521 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026
OF		 2522#endif
2523
748a9306 2524 PUSHp((char *)&saddr, len);
a0d0e21e
LW		 2525 RETURN;
2526
2527nuts:
599cee73 2528 if (ckWARN(WARN_CLOSED))
bc37a18f 2529 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
91487cfc 2530 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2531
2532badexit:
2533 RETPUSHUNDEF;
2534
2535#else
cea2e8a9 2536 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2537#endif
2538}
2539
2540PP(pp_shutdown)
2541{
a0d0e21e 2542#ifdef HAS_SOCKET
9cad6237 2543 dSP; dTARGET;
a0d0e21e
LW		 2544 int how = POPi;
2545 GV *gv = (GV*)POPs;
2546 register IO *io = GvIOn(gv);
2547
2548 if (!io || !IoIFP(io))
2549 goto nuts;
2550
6ad3d225 2551 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2552 RETURN;
2553
2554nuts:
599cee73 2555 if (ckWARN(WARN_CLOSED))
bc37a18f 2556 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2557 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2558 RETPUSHUNDEF;
2559#else
cea2e8a9 2560 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2561#endif
2562}
2563
2564PP(pp_gsockopt)
2565{
2566#ifdef HAS_SOCKET
cea2e8a9 2567 return pp_ssockopt();
a0d0e21e 2568#else
cea2e8a9 2569 DIE(aTHX_ PL_no_sock_func, "getsockopt");
a0d0e21e
LW		 2570#endif
2571}
2572
2573PP(pp_ssockopt)
2574{
a0d0e21e 2575#ifdef HAS_SOCKET
9cad6237 2576 dSP;
533c011a 2577 int optype = PL_op->op_type;
a0d0e21e
LW		 2578 SV *sv;
2579 int fd;
2580 unsigned int optname;
2581 unsigned int lvl;
2582 GV *gv;
2583 register IO *io;
1e422769 2584 Sock_size_t len;
a0d0e21e
LW		 2585
2586 if (optype == OP_GSOCKOPT)
2587 sv = sv_2mortal(NEWSV(22, 257));
2588 else
2589 sv = POPs;
2590 optname = (unsigned int) POPi;
2591 lvl = (unsigned int) POPi;
2592
2593 gv = (GV*)POPs;
2594 io = GvIOn(gv);
2595 if (!io || !IoIFP(io))
2596 goto nuts;
2597
760ac839 2598 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2599 switch (optype) {
2600 case OP_GSOCKOPT:
748a9306 2601 SvGROW(sv, 257);
a0d0e21e 2602 (void)SvPOK_only(sv);
748a9306
LW		 2603 SvCUR_set(sv,256);
2604 *SvEND(sv) ='\0';
1e422769 2605 len = SvCUR(sv);
6ad3d225 2606 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2607 goto nuts2;
1e422769 2608 SvCUR_set(sv, len);
748a9306 2609 *SvEND(sv) ='\0';
a0d0e21e
LW		 2610 PUSHs(sv);
2611 break;
2612 case OP_SSOCKOPT: {
1e422769 2613 char *buf;
2614 int aint;
2615 if (SvPOKp(sv)) {
2d8e6c8d
GS		 2616 STRLEN l;
2617 buf = SvPV(sv, l);
2618 len = l;
1e422769 2619 }
56ee1660 2620 else {
a0d0e21e
LW		 2621 aint = (int)SvIV(sv);
2622 buf = (char*)&aint;
2623 len = sizeof(int);
2624 }
6ad3d225 2625 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2626 goto nuts2;
3280af22 2627 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2628 }
2629 break;
2630 }
2631 RETURN;
2632
2633nuts:
599cee73 2634 if (ckWARN(WARN_CLOSED))
bc37a18f 2635 report_evil_fh(gv, io, optype);
91487cfc 2636 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2637nuts2:
2638 RETPUSHUNDEF;
2639
2640#else
cea2e8a9 2641 DIE(aTHX_ PL_no_sock_func, "setsockopt");
a0d0e21e
LW		 2642#endif
2643}
2644
2645PP(pp_getsockname)
2646{
2647#ifdef HAS_SOCKET
cea2e8a9 2648 return pp_getpeername();
a0d0e21e 2649#else
cea2e8a9 2650 DIE(aTHX_ PL_no_sock_func, "getsockname");
a0d0e21e
LW		 2651#endif
2652}
2653
2654PP(pp_getpeername)
2655{
a0d0e21e 2656#ifdef HAS_SOCKET
9cad6237 2657 dSP;
533c011a 2658 int optype = PL_op->op_type;
a0d0e21e
LW		 2659 SV *sv;
2660 int fd;
2661 GV *gv = (GV*)POPs;
2662 register IO *io = GvIOn(gv);
1e422769 2663 Sock_size_t len;
a0d0e21e
LW		 2664
2665 if (!io || !IoIFP(io))
2666 goto nuts;
2667
2668 sv = sv_2mortal(NEWSV(22, 257));
748a9306 2669 (void)SvPOK_only(sv);
1e422769 2670 len = 256;
2671 SvCUR_set(sv, len);
748a9306 2672 *SvEND(sv) ='\0';
760ac839 2673 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2674 switch (optype) {
2675 case OP_GETSOCKNAME:
6ad3d225 2676 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2677 goto nuts2;
2678 break;
2679 case OP_GETPEERNAME:
6ad3d225 2680 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2681 goto nuts2;
490ab354
JH		 2682#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2683 {
2684 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";
2685 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2686 if (((struct sockaddr *)SvPVX(sv))->sa_family == AF_INET &&
2687 !memcmp((char *)SvPVX(sv) + sizeof(u_short), nowhere,
2688 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2689 goto nuts2;
490ab354
JH		 2690 }
2691 }
2692#endif
a0d0e21e
LW		 2693 break;
2694 }
13826f2c
CS		 2695#ifdef BOGUS_GETNAME_RETURN
2696 /* Interactive Unix, getpeername() and getsockname()
2697 does not return valid namelen */
1e422769 2698 if (len == BOGUS_GETNAME_RETURN)
2699 len = sizeof(struct sockaddr);
13826f2c 2700#endif
1e422769 2701 SvCUR_set(sv, len);
748a9306 2702 *SvEND(sv) ='\0';
a0d0e21e
LW		 2703 PUSHs(sv);
2704 RETURN;
2705
2706nuts:
599cee73 2707 if (ckWARN(WARN_CLOSED))
bc37a18f 2708 report_evil_fh(gv, io, optype);
91487cfc 2709 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2710nuts2:
2711 RETPUSHUNDEF;
2712
2713#else
cea2e8a9 2714 DIE(aTHX_ PL_no_sock_func, "getpeername");
a0d0e21e
LW		 2715#endif
2716}
2717
2718/* Stat calls. */
2719
2720PP(pp_lstat)
2721{
cea2e8a9 2722 return pp_stat();
a0d0e21e
LW		 2723}
2724
2725PP(pp_stat)
2726{
39644a26 2727 dSP;
2dd78f96 2728 GV *gv;
54310121 2729 I32 gimme;
a0d0e21e 2730 I32 max = 13;
2d8e6c8d 2731 STRLEN n_a;
a0d0e21e 2732
533c011a 2733 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2734 gv = cGVOP_gv;
8a4e5b40 2735 if (PL_op->op_type == OP_LSTAT) {
5d3e98de
RGS		 2736 if (gv != PL_defgv) {
2737 if (ckWARN(WARN_IO))
9014280d 2738 Perl_warner(aTHX_ packWARN(WARN_IO),
5d3e98de
RGS		 2739 "lstat() on filehandle %s", GvENAME(gv));
2740 } else if (PL_laststype != OP_LSTAT)
8a4e5b40 2741 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2742 }
2743
748a9306 2744 do_fstat:
2dd78f96 2745 if (gv != PL_defgv) {
3280af22 2746 PL_laststype = OP_STAT;
2dd78f96 2747 PL_statgv = gv;
3280af22 2748 sv_setpv(PL_statname, "");
2dd78f96
JH		 2749 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2750 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
a0d0e21e 2751 }
9ddeeac9 2752 if (PL_laststatval < 0) {
2dd78f96
JH		 2753 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2754 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2755 max = 0;
9ddeeac9 2756 }
a0d0e21e
LW		 2757 }
2758 else {
748a9306
LW		 2759 SV* sv = POPs;
2760 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2761 gv = (GV*)sv;
748a9306
LW		 2762 goto do_fstat;
2763 }
2764 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 2765 gv = (GV*)SvRV(sv);
5d3e98de 2766 if (PL_op->op_type == OP_LSTAT && ckWARN(WARN_IO))
9014280d 2767 Perl_warner(aTHX_ packWARN(WARN_IO),
5d3e98de 2768 "lstat() on filehandle %s", GvENAME(gv));
748a9306
LW		 2769 goto do_fstat;
2770 }
2d8e6c8d 2771 sv_setpv(PL_statname, SvPV(sv,n_a));
3280af22 2772 PL_statgv = Nullgv;
a0d0e21e 2773#ifdef HAS_LSTAT
533c011a
NIS		 2774 PL_laststype = PL_op->op_type;
2775 if (PL_op->op_type == OP_LSTAT)
2d8e6c8d 2776 PL_laststatval = PerlLIO_lstat(SvPV(PL_statname, n_a), &PL_statcache);
a0d0e21e
LW		 2777 else
2778#endif
2d8e6c8d 2779 PL_laststatval = PerlLIO_stat(SvPV(PL_statname, n_a), &PL_statcache);
3280af22 2780 if (PL_laststatval < 0) {
2d8e6c8d 2781 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(PL_statname, n_a), '\n'))
9014280d 2782 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW		 2783 max = 0;
2784 }
2785 }
2786
54310121 2787 gimme = GIMME_V;
2788 if (gimme != G_ARRAY) {
2789 if (gimme != G_VOID)
2790 XPUSHs(boolSV(max));
2791 RETURN;
a0d0e21e
LW		 2792 }
2793 if (max) {
36477c24 2794 EXTEND(SP, max);
2795 EXTEND_MORTAL(max);
1ff81528
PL		 2796 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2797 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2798 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2799 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2800#if Uid_t_size > IVSIZE
2801 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2802#else
23dcd6c8 2803# if Uid_t_sign <= 0
1ff81528 2804 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2805# else
2806 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2807# endif
146174a9 2808#endif
301e8125 2809#if Gid_t_size > IVSIZE
146174a9
CB		 2810 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2811#else
23dcd6c8 2812# if Gid_t_sign <= 0
1ff81528 2813 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2814# else
2815 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2816# endif
146174a9 2817#endif
cbdc8872 2818#ifdef USE_STAT_RDEV
1ff81528 2819 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2820#else
79cb57f6 2821 PUSHs(sv_2mortal(newSVpvn("", 0)));
cbdc8872 2822#endif
146174a9
CB		 2823#if Off_t_size > IVSIZE
2824 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_size)));
2825#else
1ff81528 2826 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2827#endif
cbdc8872 2828#ifdef BIG_TIME
172ae379
JH		 2829 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2830 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2831 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2832#else
1ff81528
PL		 2833 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2834 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2835 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
cbdc8872 2836#endif
a0d0e21e 2837#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2838 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2839 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2840#else
79cb57f6
GS		 2841 PUSHs(sv_2mortal(newSVpvn("", 0)));
2842 PUSHs(sv_2mortal(newSVpvn("", 0)));
a0d0e21e
LW		 2843#endif
2844 }
2845 RETURN;
2846}
2847
2848PP(pp_ftrread)
2849{
9cad6237 2850 I32 result;
2a3ff820 2851 dSP;
5ff3f7a4 2852#if defined(HAS_ACCESS) && defined(R_OK)
2d8e6c8d 2853 STRLEN n_a;
5ff3f7a4 2854 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2855 result = access(TOPpx, R_OK);
5ff3f7a4
GS		 2856 if (result == 0)
2857 RETPUSHYES;
2858 if (result < 0)
2859 RETPUSHUNDEF;
2860 RETPUSHNO;
22865c03
GS		 2861 }
2862 else
cea2e8a9 2863 result = my_stat();
5ff3f7a4 2864#else
cea2e8a9 2865 result = my_stat();
5ff3f7a4 2866#endif
22865c03 2867 SPAGAIN;
a0d0e21e
LW		 2868 if (result < 0)
2869 RETPUSHUNDEF;
3280af22 2870 if (cando(S_IRUSR, 0, &PL_statcache))
a0d0e21e
LW		 2871 RETPUSHYES;
2872 RETPUSHNO;
2873}
2874
2875PP(pp_ftrwrite)
2876{
9cad6237 2877 I32 result;
2a3ff820 2878 dSP;
5ff3f7a4 2879#if defined(HAS_ACCESS) && defined(W_OK)
2d8e6c8d 2880 STRLEN n_a;
5ff3f7a4 2881 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2882 result = access(TOPpx, W_OK);
5ff3f7a4
GS		 2883 if (result == 0)
2884 RETPUSHYES;
2885 if (result < 0)
2886 RETPUSHUNDEF;
2887 RETPUSHNO;
22865c03
GS		 2888 }
2889 else
cea2e8a9 2890 result = my_stat();
5ff3f7a4 2891#else
cea2e8a9 2892 result = my_stat();
5ff3f7a4 2893#endif
22865c03 2894 SPAGAIN;
a0d0e21e
LW		 2895 if (result < 0)
2896 RETPUSHUNDEF;
3280af22 2897 if (cando(S_IWUSR, 0, &PL_statcache))
a0d0e21e
LW		 2898 RETPUSHYES;
2899 RETPUSHNO;
2900}
2901
2902PP(pp_ftrexec)
2903{
9cad6237 2904 I32 result;
2a3ff820 2905 dSP;
5ff3f7a4 2906#if defined(HAS_ACCESS) && defined(X_OK)
2d8e6c8d 2907 STRLEN n_a;
5ff3f7a4 2908 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2909 result = access(TOPpx, X_OK);
5ff3f7a4
GS		 2910 if (result == 0)
2911 RETPUSHYES;
2912 if (result < 0)
2913 RETPUSHUNDEF;
2914 RETPUSHNO;
22865c03
GS		 2915 }
2916 else
cea2e8a9 2917 result = my_stat();
5ff3f7a4 2918#else
cea2e8a9 2919 result = my_stat();
5ff3f7a4 2920#endif
22865c03 2921 SPAGAIN;
a0d0e21e
LW		 2922 if (result < 0)
2923 RETPUSHUNDEF;
3280af22 2924 if (cando(S_IXUSR, 0, &PL_statcache))
a0d0e21e
LW		 2925 RETPUSHYES;
2926 RETPUSHNO;
2927}
2928
2929PP(pp_fteread)
2930{
9cad6237 2931 I32 result;
2a3ff820 2932 dSP;
5ff3f7a4 2933#ifdef PERL_EFF_ACCESS_R_OK
2d8e6c8d 2934 STRLEN n_a;
5ff3f7a4 2935 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2936 result = PERL_EFF_ACCESS_R_OK(TOPpx);
5ff3f7a4
GS		 2937 if (result == 0)
2938 RETPUSHYES;
2939 if (result < 0)
2940 RETPUSHUNDEF;
2941 RETPUSHNO;
22865c03
GS		 2942 }
2943 else
cea2e8a9 2944 result = my_stat();
5ff3f7a4 2945#else
cea2e8a9 2946 result = my_stat();
5ff3f7a4 2947#endif
22865c03 2948 SPAGAIN;
a0d0e21e
LW		 2949 if (result < 0)
2950 RETPUSHUNDEF;
3280af22 2951 if (cando(S_IRUSR, 1, &PL_statcache))
a0d0e21e
LW		 2952 RETPUSHYES;
2953 RETPUSHNO;
2954}
2955
2956PP(pp_ftewrite)
2957{
9cad6237 2958 I32 result;
2a3ff820 2959 dSP;
5ff3f7a4 2960#ifdef PERL_EFF_ACCESS_W_OK
2d8e6c8d 2961 STRLEN n_a;
5ff3f7a4 2962 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2963 result = PERL_EFF_ACCESS_W_OK(TOPpx);
5ff3f7a4
GS		 2964 if (result == 0)
2965 RETPUSHYES;
2966 if (result < 0)
2967 RETPUSHUNDEF;
2968 RETPUSHNO;
22865c03
GS		 2969 }
2970 else
cea2e8a9 2971 result = my_stat();
5ff3f7a4 2972#else
cea2e8a9 2973 result = my_stat();
5ff3f7a4 2974#endif
22865c03 2975 SPAGAIN;
a0d0e21e
LW		 2976 if (result < 0)
2977 RETPUSHUNDEF;
3280af22 2978 if (cando(S_IWUSR, 1, &PL_statcache))
a0d0e21e
LW		 2979 RETPUSHYES;
2980 RETPUSHNO;
2981}
2982
2983PP(pp_fteexec)
2984{
9cad6237 2985 I32 result;
2a3ff820 2986 dSP;
5ff3f7a4 2987#ifdef PERL_EFF_ACCESS_X_OK
2d8e6c8d 2988 STRLEN n_a;
5ff3f7a4 2989 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2990 result = PERL_EFF_ACCESS_X_OK(TOPpx);
5ff3f7a4
GS		 2991 if (result == 0)
2992 RETPUSHYES;
2993 if (result < 0)
2994 RETPUSHUNDEF;
2995 RETPUSHNO;
22865c03
GS		 2996 }
2997 else
cea2e8a9 2998 result = my_stat();
5ff3f7a4 2999#else
cea2e8a9 3000 result = my_stat();
5ff3f7a4 3001#endif
22865c03 3002 SPAGAIN;
a0d0e21e
LW		 3003 if (result < 0)
3004 RETPUSHUNDEF;
3280af22 3005 if (cando(S_IXUSR, 1, &PL_statcache))
a0d0e21e
LW		 3006 RETPUSHYES;
3007 RETPUSHNO;
3008}
3009
3010PP(pp_ftis)
3011{
9cad6237 3012 I32 result = my_stat();
2a3ff820 3013 dSP;
a0d0e21e
LW		 3014 if (result < 0)
3015 RETPUSHUNDEF;
3016 RETPUSHYES;
3017}
3018
3019PP(pp_fteowned)
3020{
cea2e8a9 3021 return pp_ftrowned();
a0d0e21e
LW		 3022}
3023
3024PP(pp_ftrowned)
3025{
9cad6237 3026 I32 result = my_stat();
2a3ff820 3027 dSP;
a0d0e21e
LW		 3028 if (result < 0)
3029 RETPUSHUNDEF;
146174a9
CB		 3030 if (PL_statcache.st_uid == (PL_op->op_type == OP_FTEOWNED ?
3031 PL_euid : PL_uid) )
a0d0e21e
LW		 3032 RETPUSHYES;
3033 RETPUSHNO;
3034}
3035
3036PP(pp_ftzero)
3037{
9cad6237 3038 I32 result = my_stat();
2a3ff820 3039 dSP;
a0d0e21e
LW		 3040 if (result < 0)
3041 RETPUSHUNDEF;
146174a9 3042 if (PL_statcache.st_size == 0)
a0d0e21e
LW		 3043 RETPUSHYES;
3044 RETPUSHNO;
3045}
3046
3047PP(pp_ftsize)
3048{
9cad6237 3049 I32 result = my_stat();
2a3ff820 3050 dSP; dTARGET;
a0d0e21e
LW		 3051 if (result < 0)
3052 RETPUSHUNDEF;
146174a9
CB		 3053#if Off_t_size > IVSIZE
3054 PUSHn(PL_statcache.st_size);
3055#else
3280af22 3056 PUSHi(PL_statcache.st_size);
146174a9 3057#endif
a0d0e21e
LW		 3058 RETURN;
3059}
3060
3061PP(pp_ftmtime)
3062{
9cad6237 3063 I32 result = my_stat();
2a3ff820 3064 dSP; dTARGET;
a0d0e21e
LW		 3065 if (result < 0)
3066 RETPUSHUNDEF;
c6419e06 3067 PUSHn( (PL_basetime - PL_statcache.st_mtime) / 86400.0 );
a0d0e21e
LW		 3068 RETURN;
3069}
3070
3071PP(pp_ftatime)
3072{
9cad6237 3073 I32 result = my_stat();
2a3ff820 3074 dSP; dTARGET;
a0d0e21e
LW		 3075 if (result < 0)
3076 RETPUSHUNDEF;
c6419e06 3077 PUSHn( (PL_basetime - PL_statcache.st_atime) / 86400.0 );
a0d0e21e
LW		 3078 RETURN;
3079}
3080
3081PP(pp_ftctime)
3082{
9cad6237 3083 I32 result = my_stat();
2a3ff820 3084 dSP; dTARGET;
a0d0e21e
LW		 3085 if (result < 0)
3086 RETPUSHUNDEF;
c6419e06 3087 PUSHn( (PL_basetime - PL_statcache.st_ctime) / 86400.0 );
a0d0e21e
LW		 3088 RETURN;
3089}
3090
3091PP(pp_ftsock)
3092{
9cad6237 3093 I32 result = my_stat();
2a3ff820 3094 dSP;
a0d0e21e
LW		 3095 if (result < 0)
3096 RETPUSHUNDEF;
3280af22 3097 if (S_ISSOCK(PL_statcache.st_mode))
a0d0e21e
LW		 3098 RETPUSHYES;
3099 RETPUSHNO;
3100}
3101
3102PP(pp_ftchr)
3103{
9cad6237 3104 I32 result = my_stat();
2a3ff820 3105 dSP;
a0d0e21e
LW		 3106 if (result < 0)
3107 RETPUSHUNDEF;
3280af22 3108 if (S_ISCHR(PL_statcache.st_mode))
a0d0e21e
LW		 3109 RETPUSHYES;
3110 RETPUSHNO;
3111}
3112
3113PP(pp_ftblk)
3114{
9cad6237 3115 I32 result = my_stat();
2a3ff820 3116 dSP;
a0d0e21e
LW		 3117 if (result < 0)
3118 RETPUSHUNDEF;
3280af22 3119 if (S_ISBLK(PL_statcache.st_mode))
a0d0e21e
LW		 3120 RETPUSHYES;
3121 RETPUSHNO;
3122}
3123
3124PP(pp_ftfile)
3125{
9cad6237 3126 I32 result = my_stat();
2a3ff820 3127 dSP;
a0d0e21e
LW		 3128 if (result < 0)
3129 RETPUSHUNDEF;
3280af22 3130 if (S_ISREG(PL_statcache.st_mode))
a0d0e21e
LW		 3131 RETPUSHYES;
3132 RETPUSHNO;
3133}
3134
3135PP(pp_ftdir)
3136{
9cad6237 3137 I32 result = my_stat();
2a3ff820 3138 dSP;
a0d0e21e
LW		 3139 if (result < 0)
3140 RETPUSHUNDEF;
3280af22 3141 if (S_ISDIR(PL_statcache.st_mode))
a0d0e21e
LW		 3142 RETPUSHYES;
3143 RETPUSHNO;
3144}
3145
3146PP(pp_ftpipe)
3147{
9cad6237 3148 I32 result = my_stat();
2a3ff820 3149 dSP;
a0d0e21e
LW		 3150 if (result < 0)
3151 RETPUSHUNDEF;
3280af22 3152 if (S_ISFIFO(PL_statcache.st_mode))
a0d0e21e
LW		 3153 RETPUSHYES;
3154 RETPUSHNO;
3155}
3156
3157PP(pp_ftlink)
3158{
9cad6237 3159 I32 result = my_lstat();
2a3ff820 3160 dSP;
a0d0e21e
LW		 3161 if (result < 0)
3162 RETPUSHUNDEF;
3280af22 3163 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e
LW		 3164 RETPUSHYES;
3165 RETPUSHNO;
3166}
3167
3168PP(pp_ftsuid)
3169{
39644a26 3170 dSP;
a0d0e21e 3171#ifdef S_ISUID
cea2e8a9 3172 I32 result = my_stat();
a0d0e21e
LW		 3173 SPAGAIN;
3174 if (result < 0)
3175 RETPUSHUNDEF;
3280af22 3176 if (PL_statcache.st_mode & S_ISUID)
a0d0e21e
LW		 3177 RETPUSHYES;
3178#endif
3179 RETPUSHNO;
3180}
3181
3182PP(pp_ftsgid)
3183{
39644a26 3184 dSP;
a0d0e21e 3185#ifdef S_ISGID
cea2e8a9 3186 I32 result = my_stat();
a0d0e21e
LW		 3187 SPAGAIN;
3188 if (result < 0)
3189 RETPUSHUNDEF;
3280af22 3190 if (PL_statcache.st_mode & S_ISGID)
a0d0e21e
LW		 3191 RETPUSHYES;
3192#endif
3193 RETPUSHNO;
3194}
3195
3196PP(pp_ftsvtx)
3197{
39644a26 3198 dSP;
a0d0e21e 3199#ifdef S_ISVTX
cea2e8a9 3200 I32 result = my_stat();
a0d0e21e
LW		 3201 SPAGAIN;
3202 if (result < 0)
3203 RETPUSHUNDEF;
3280af22 3204 if (PL_statcache.st_mode & S_ISVTX)
a0d0e21e
LW		 3205 RETPUSHYES;
3206#endif
3207 RETPUSHNO;
3208}
3209
3210PP(pp_fttty)
3211{
39644a26 3212 dSP;
a0d0e21e
LW		 3213 int fd;
3214 GV *gv;
fb73857a 3215 char *tmps = Nullch;
2d8e6c8d 3216 STRLEN n_a;
fb73857a 3217
533c011a 3218 if (PL_op->op_flags & OPf_REF)
146174a9 3219 gv = cGVOP_gv;
fb73857a 3220 else if (isGV(TOPs))
3221 gv = (GV*)POPs;
3222 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3223 gv = (GV*)SvRV(POPs);
a0d0e21e 3224 else
2d8e6c8d 3225 gv = gv_fetchpv(tmps = POPpx, FALSE, SVt_PVIO);
fb73857a 3226
a0d0e21e 3227 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3228 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
fb73857a 3229 else if (tmps && isDIGIT(*tmps))
a0d0e21e
LW		 3230 fd = atoi(tmps);
3231 else
3232 RETPUSHUNDEF;
6ad3d225 3233 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3234 RETPUSHYES;
3235 RETPUSHNO;
3236}
3237
16d20bd9
AD		 3238#if defined(atarist) /* this will work with atariST. Configure will
3239 make guesses for other systems. */
3240# define FILE_base(f) ((f)->_base)
3241# define FILE_ptr(f) ((f)->_ptr)
3242# define FILE_cnt(f) ((f)->_cnt)
3243# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3244#endif
3245
3246PP(pp_fttext)
3247{
39644a26 3248 dSP;
a0d0e21e
LW		 3249 I32 i;
3250 I32 len;
3251 I32 odd = 0;
3252 STDCHAR tbuf[512];
3253 register STDCHAR *s;
3254 register IO *io;
5f05dabc 3255 register SV *sv;
3256 GV *gv;
2d8e6c8d 3257 STRLEN n_a;
146174a9 3258 PerlIO *fp;
a0d0e21e 3259
533c011a 3260 if (PL_op->op_flags & OPf_REF)
146174a9 3261 gv = cGVOP_gv;
5f05dabc 3262 else if (isGV(TOPs))
3263 gv = (GV*)POPs;
3264 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3265 gv = (GV*)SvRV(POPs);
3266 else
3267 gv = Nullgv;
3268
3269 if (gv) {
a0d0e21e 3270 EXTEND(SP, 1);
3280af22
NIS		 3271 if (gv == PL_defgv) {
3272 if (PL_statgv)
3273 io = GvIO(PL_statgv);
a0d0e21e 3274 else {
3280af22 3275 sv = PL_statname;
a0d0e21e
LW		 3276 goto really_filename;
3277 }
3278 }
3279 else {
3280af22
NIS		 3280 PL_statgv = gv;
3281 PL_laststatval = -1;
3282 sv_setpv(PL_statname, "");
3283 io = GvIO(PL_statgv);
a0d0e21e
LW		 3284 }
3285 if (io && IoIFP(io)) {
5f05dabc 3286 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3287 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3288 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3289 if (PL_laststatval < 0)
5f05dabc 3290 RETPUSHUNDEF;
9cbac4c7 3291 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3292 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3293 RETPUSHNO;
3294 else
3295 RETPUSHYES;
9cbac4c7 3296 }
a20bf0c3 3297 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3298 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3299 if (i != EOF)
760ac839 3300 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3301 }
a20bf0c3 3302 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3303 RETPUSHYES;
a20bf0c3
JH		 3304 len = PerlIO_get_bufsiz(IoIFP(io));
3305 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3306 /* sfio can have large buffers - limit to 512 */
3307 if (len > 512)
3308 len = 512;
a0d0e21e
LW		 3309 }
3310 else {
2dd78f96 3311 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3312 gv = cGVOP_gv;
2dd78f96 3313 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3314 }
91487cfc 3315 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 3316 RETPUSHUNDEF;
3317 }
3318 }
3319 else {
3320 sv = POPs;
5f05dabc 3321 really_filename:
3280af22
NIS		 3322 PL_statgv = Nullgv;
3323 PL_laststatval = -1;
5c9aa243 3324 PL_laststype = OP_STAT;
2d8e6c8d 3325 sv_setpv(PL_statname, SvPV(sv, n_a));
146174a9 3326 if (!(fp = PerlIO_open(SvPVX(PL_statname), "r"))) {
2d8e6c8d 3327 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
9014280d 3328 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
a0d0e21e
LW		 3329 RETPUSHUNDEF;
3330 }
146174a9
CB		 3331 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3332 if (PL_laststatval < 0) {
3333 (void)PerlIO_close(fp);
5f05dabc 3334 RETPUSHUNDEF;
146174a9 3335 }
60382766 3336 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
146174a9
CB		 3337 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3338 (void)PerlIO_close(fp);
a0d0e21e 3339 if (len <= 0) {
533c011a 3340 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3341 RETPUSHNO; /* special case NFS directories */
3342 RETPUSHYES; /* null file is anything */
3343 }
3344 s = tbuf;
3345 }
3346
3347 /* now scan s to look for textiness */
4633a7c4 3348 /* XXX ASCII dependent code */
a0d0e21e 3349
146174a9
CB		 3350#if defined(DOSISH) || defined(USEMYBINMODE)
3351 /* ignore trailing ^Z on short files */
3352 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3353 --len;
3354#endif
3355
a0d0e21e
LW		 3356 for (i = 0; i < len; i++, s++) {
3357 if (!*s) { /* null never allowed in text */
3358 odd += len;
3359 break;
3360 }
9d116dd7 3361#ifdef EBCDIC
301e8125 3362 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3363 odd++;
3364#else
146174a9
CB		 3365 else if (*s & 128) {
3366#ifdef USE_LOCALE
2de3dbcc 3367 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3368 continue;
3369#endif
3370 /* utf8 characters don't count as odd */
fd400ab9 3371 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3372 int ulen = UTF8SKIP(s);
3373 if (ulen < len - i) {
3374 int j;
3375 for (j = 1; j < ulen; j++) {
fd400ab9 3376 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3377 goto not_utf8;
3378 }
3379 --ulen; /* loop does extra increment */
3380 s += ulen;
3381 i += ulen;
3382 continue;
3383 }
3384 }
3385 not_utf8:
3386 odd++;
146174a9 3387 }
a0d0e21e
LW		 3388 else if (*s < 32 &&
3389 *s != '\n' && *s != '\r' && *s != '\b' &&
3390 *s != '\t' && *s != '\f' && *s != 27)
3391 odd++;
9d116dd7 3392#endif
a0d0e21e
LW		 3393 }
3394
533c011a 3395 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3396 RETPUSHNO;
3397 else
3398 RETPUSHYES;
3399}
3400
3401PP(pp_ftbinary)
3402{
cea2e8a9 3403 return pp_fttext();
a0d0e21e
LW		 3404}
3405
3406/* File calls. */
3407
3408PP(pp_chdir)
3409{
39644a26 3410 dSP; dTARGET;
a0d0e21e
LW		 3411 char *tmps;
3412 SV **svp;
2d8e6c8d 3413 STRLEN n_a;
a0d0e21e 3414
35ae6b54
MS		 3415 if( MAXARG == 1 )
3416 tmps = POPpx;
3417 else
3418 tmps = 0;
3419
3420 if( !tmps || !*tmps ) {
3421 if ( (svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE))
3422 || (svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE))
491527d0 3423#ifdef VMS
35ae6b54 3424 || (svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE))
491527d0 3425#endif
35ae6b54
MS		 3426 )
3427 {
3428 if( MAXARG == 1 )
9014280d 3429 deprecate("chdir('') or chdir(undef) as chdir()");
35ae6b54
MS		 3430 tmps = SvPV(*svp, n_a);
3431 }
72f496dc 3432 else {
389ec635 3433 PUSHi(0);
b7ab37f8 3434 TAINT_PROPER("chdir");
389ec635
MS		 3435 RETURN;
3436 }
8ea155d1 3437 }
8ea155d1 3438
a0d0e21e 3439 TAINT_PROPER("chdir");
6ad3d225 3440 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3441#ifdef VMS
3442 /* Clear the DEFAULT element of ENV so we'll get the new value
3443 * in the future. */
6b88bc9c 3444 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3445#endif
a0d0e21e
LW		 3446 RETURN;
3447}
3448
3449PP(pp_chown)
3450{
a0d0e21e 3451#ifdef HAS_CHOWN
76ffd3b9
IZ		 3452 dSP; dMARK; dTARGET;
3453 I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3454
a0d0e21e
LW		 3455 SP = MARK;
3456 PUSHi(value);
3457 RETURN;
3458#else
0322a713 3459 DIE(aTHX_ PL_no_func, "chown");
a0d0e21e
LW		 3460#endif
3461}
3462
3463PP(pp_chroot)
3464{
a0d0e21e 3465#ifdef HAS_CHROOT
76ffd3b9 3466 dSP; dTARGET;
2d8e6c8d 3467 STRLEN n_a;
d05c1ba0 3468 char *tmps = POPpx;
a0d0e21e
LW		 3469 TAINT_PROPER("chroot");
3470 PUSHi( chroot(tmps) >= 0 );
3471 RETURN;
3472#else
cea2e8a9 3473 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3474#endif
3475}
3476
3477PP(pp_unlink)
3478{
39644a26 3479 dSP; dMARK; dTARGET;
a0d0e21e 3480 I32 value;
533c011a 3481 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3482 SP = MARK;
3483 PUSHi(value);
3484 RETURN;
3485}
3486
3487PP(pp_chmod)
3488{
39644a26 3489 dSP; dMARK; dTARGET;
a0d0e21e 3490 I32 value;
533c011a 3491 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3492 SP = MARK;
3493 PUSHi(value);
3494 RETURN;
3495}
3496
3497PP(pp_utime)
3498{
39644a26 3499 dSP; dMARK; dTARGET;
a0d0e21e 3500 I32 value;
533c011a 3501 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3502 SP = MARK;
3503 PUSHi(value);
3504 RETURN;
3505}
3506
3507PP(pp_rename)
3508{
39644a26 3509 dSP; dTARGET;
a0d0e21e 3510 int anum;
2d8e6c8d 3511 STRLEN n_a;
a0d0e21e 3512
2d8e6c8d
GS		 3513 char *tmps2 = POPpx;
3514 char *tmps = SvPV(TOPs, n_a);
a0d0e21e
LW		 3515 TAINT_PROPER("rename");
3516#ifdef HAS_RENAME
baed7233 3517 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3518#else
6b88bc9c 3519 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
ed969818
W		 3520 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3521 anum = 1;
3522 else {
3654eb6c 3523 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
ed969818
W		 3524 (void)UNLINK(tmps2);
3525 if (!(anum = link(tmps, tmps2)))
3526 anum = UNLINK(tmps);
3527 }
a0d0e21e
LW		 3528 }
3529#endif
3530 SETi( anum >= 0 );
3531 RETURN;
3532}
3533
3534PP(pp_link)