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More tests for syswrite with UTF-8 data.
[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW		 1/* pp_sys.c
2 *
4bb101f2 3 * Copyright (C) 1995, 1996, 1997, 1998, 1999,
359e8da2 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
a0d0e21e
LW		 5 *
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8 *
9 */
10
11/*
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
16 */
17
166f8a29
DM		 18/* This file contains system pp ("push/pop") functions that
19 * execute the opcodes that make up a perl program. A typical pp function
20 * expects to find its arguments on the stack, and usually pushes its
21 * results onto the stack, hence the 'pp' terminology. Each OP structure
22 * contains a pointer to the relevant pp_foo() function.
23 *
24 * By 'system', we mean ops which interact with the OS, such as pp_open().
25 */
26
a0d0e21e 27#include "EXTERN.h"
864dbfa3 28#define PERL_IN_PP_SYS_C
a0d0e21e
LW		 29#include "perl.h"
30
f1066039
JH		 31#ifdef I_SHADOW
32/* Shadow password support for solaris - pdo@cs.umd.edu
33 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH		 34 * The API is from SysV.
35 *
36 * There are at least two more shadow interfaces,
37 * see the comments in pp_gpwent().
38 *
39 * --jhi */
40# ifdef __hpux__
c529f79d 41/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 42 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH		 43# undef MAXINT
44# endif
45# include <shadow.h>
8c0bfa08
PB		 46#endif
47
76c32331 48#ifdef I_SYS_WAIT
49# include <sys/wait.h>
50#endif
51
52#ifdef I_SYS_RESOURCE
53# include <sys/resource.h>
16d20bd9 54#endif
a0d0e21e 55
2986a63f
JH		 56#ifdef NETWARE
57NETDB_DEFINE_CONTEXT
58#endif
59
a0d0e21e 60#ifdef HAS_SELECT
1e743fda
JH		 61# ifdef I_SYS_SELECT
62# include <sys/select.h>
63# endif
a0d0e21e 64#endif
a0d0e21e 65
dc45a647
MB		 66/* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS		 68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 72*/
cb50131a 73#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW		 74extern int h_errno;
75#endif
76
77#ifdef HAS_PASSWD
78# ifdef I_PWD
79# include <pwd.h>
80# else
fd8cd3a3 81# if !defined(VMS)
20ce7b12
GS		 82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
fd8cd3a3 84# endif
a0d0e21e 85# endif
28e8609d 86# ifdef HAS_GETPWENT
10bc17b6 87#ifndef getpwent
20ce7b12 88 struct passwd *getpwent (void);
c2a8f790 89#elif defined (VMS) && defined (my_getpwent)
9fa802f3 90 struct passwd *Perl_my_getpwent (pTHX);
10bc17b6 91#endif
28e8609d 92# endif
a0d0e21e
LW		 93#endif
94
95#ifdef HAS_GROUP
96# ifdef I_GRP
97# include <grp.h>
98# else
20ce7b12
GS		 99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
a0d0e21e 101# endif
28e8609d 102# ifdef HAS_GETGRENT
10bc17b6 103#ifndef getgrent
20ce7b12 104 struct group *getgrent (void);
10bc17b6 105#endif
28e8609d 106# endif
a0d0e21e
LW		 107#endif
108
109#ifdef I_UTIME
3730b96e 110# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 111# include <sys/utime.h>
112# else
113# include <utime.h>
114# endif
a0d0e21e 115#endif
a0d0e21e 116
cbdc8872 117#ifdef HAS_CHSIZE
cd52b7b2 118# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
119# undef my_chsize
120# endif
72cc7e2a 121# define my_chsize PerlLIO_chsize
27da23d5
JH		 122#else
123# ifdef HAS_TRUNCATE
124# define my_chsize PerlLIO_chsize
125# else
126I32 my_chsize(int fd, Off_t length);
127# endif
cbdc8872 128#endif
129
ff68c719 130#ifdef HAS_FLOCK
131# define FLOCK flock
132#else /* no flock() */
133
36477c24 134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138# if defined(HAS_FCNTL) && !defined(I_FCNTL)
139# include <fcntl.h>
140# endif
141
9d9004a9 142# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 143# define FLOCK fcntl_emulate_flock
144# define FCNTL_EMULATE_FLOCK
145# else /* no flock() or fcntl(F_SETLK,...) */
146# ifdef HAS_LOCKF
147# define FLOCK lockf_emulate_flock
148# define LOCKF_EMULATE_FLOCK
149# endif /* lockf */
150# endif /* no flock() or fcntl(F_SETLK,...) */
151
152# ifdef FLOCK
20ce7b12 153 static int FLOCK (int, int);
ff68c719 154
155 /*
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
158 */
159# ifndef LOCK_SH
160# define LOCK_SH 1
161# endif
162# ifndef LOCK_EX
163# define LOCK_EX 2
164# endif
165# ifndef LOCK_NB
166# define LOCK_NB 4
167# endif
168# ifndef LOCK_UN
169# define LOCK_UN 8
170# endif
171# endif /* emulating flock() */
172
173#endif /* no flock() */
55497cff 174
85ab1d1d 175#define ZBTLEN 10
27da23d5 176static const char zero_but_true[ZBTLEN + 1] = "0 but true";
85ab1d1d 177
5ff3f7a4
GS		 178#if defined(I_SYS_ACCESS) && !defined(R_OK)
179# include <sys/access.h>
180#endif
181
c529f79d
CB		 182#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183# define FD_CLOEXEC 1 /* NeXT needs this */
184#endif
185
a4af207c
JH		 186#include "reentr.h"
187
9cffb111
OS		 188#ifdef __Lynx__
189/* Missing protos on LynxOS */
190void sethostent(int);
191void endhostent(void);
192void setnetent(int);
193void endnetent(void);
194void setprotoent(int);
195void endprotoent(void);
196void setservent(int);
197void endservent(void);
198#endif
199
faee0e31 200#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4 201
a4323dee
MB		 202/* AIX 5.2 and below use mktime for localtime, and defines the edge case
203 * for time 0x7fffffff to be valid only in UTC. AIX 5.3 provides localtime64
204 * available in the 32bit environment, which could warrant Configure
205 * checks in the future.
206 */
207#ifdef _AIX
208#define LOCALTIME_EDGECASE_BROKEN
209#endif
210
5ff3f7a4
GS		 211/* F_OK unused: if stat() cannot find it... */
212
d7558cad 213#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 214 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 215# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS		 216#endif
217
d7558cad 218#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 219# ifdef I_SYS_SECURITY
5ff3f7a4
GS		 220# include <sys/security.h>
221# endif
c955f117
JH		 222# ifdef ACC_SELF
223 /* HP SecureWare */
d7558cad 224# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH		 225# else
226 /* SCO */
d7558cad 227# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 228# endif
5ff3f7a4
GS		 229#endif
230
d7558cad 231#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 232 /* AIX */
d7558cad 233# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
5ff3f7a4
GS		 234#endif
235
d7558cad
NC		 236
237#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS		 238 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
239 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 240/* The Hard Way. */
327c3667 241STATIC int
7f4774ae 242S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 243{
c4420975
AL		 244 const Uid_t ruid = getuid();
245 const Uid_t euid = geteuid();
246 const Gid_t rgid = getgid();
247 const Gid_t egid = getegid();
5ff3f7a4
GS		 248 int res;
249
146174a9 250 LOCK_CRED_MUTEX;
5ff3f7a4 251#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 252 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 253#else
254#ifdef HAS_SETREUID
255 if (setreuid(euid, ruid))
256#else
257#ifdef HAS_SETRESUID
258 if (setresuid(euid, ruid, (Uid_t)-1))
259#endif
260#endif
cea2e8a9 261 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 262#endif
263
264#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 265 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS		 266#else
267#ifdef HAS_SETREGID
268 if (setregid(egid, rgid))
269#else
270#ifdef HAS_SETRESGID
271 if (setresgid(egid, rgid, (Gid_t)-1))
272#endif
273#endif
cea2e8a9 274 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 275#endif
276
277 res = access(path, mode);
278
279#ifdef HAS_SETREUID
280 if (setreuid(ruid, euid))
281#else
282#ifdef HAS_SETRESUID
283 if (setresuid(ruid, euid, (Uid_t)-1))
284#endif
285#endif
cea2e8a9 286 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 287
288#ifdef HAS_SETREGID
289 if (setregid(rgid, egid))
290#else
291#ifdef HAS_SETRESGID
292 if (setresgid(rgid, egid, (Gid_t)-1))
293#endif
294#endif
cea2e8a9 295 Perl_croak(aTHX_ "leaving effective gid failed");
146174a9 296 UNLOCK_CRED_MUTEX;
5ff3f7a4
GS		 297
298 return res;
299}
d7558cad 300# define PERL_EFF_ACCESS(p,f) (emulate_eaccess((p), (f)))
5ff3f7a4
GS		 301#endif
302
faee0e31 303#if !defined(PERL_EFF_ACCESS)
76ffd3b9
IZ		 304/* With it or without it: anyway you get a warning: either that
305 it is unused, or it is declared static and never defined.
306 */
327c3667 307STATIC int
7f4774ae 308S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 309{
294a48e9
AL		 310 PERL_UNUSED_ARG(path);
311 PERL_UNUSED_ARG(mode);
cea2e8a9 312 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 313 /*NOTREACHED*/
314 return -1;
315}
316#endif
317
a0d0e21e
LW		 318PP(pp_backtick)
319{
97aff369 320 dVAR; dSP; dTARGET;
760ac839 321 PerlIO *fp;
1b6737cc 322 const char * const tmps = POPpconstx;
f54cb97a 323 const I32 gimme = GIMME_V;
e1ec3a88 324 const char *mode = "r";
54310121 325
a0d0e21e 326 TAINT_PROPER("``");
16fe6d59
GS		 327 if (PL_op->op_private & OPpOPEN_IN_RAW)
328 mode = "rb";
329 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
330 mode = "rt";
2fbb330f 331 fp = PerlProc_popen(tmps, mode);
a0d0e21e 332 if (fp) {
7452cf6a 333 const char * const type = PL_curcop->cop_io ? SvPV_nolen_const(PL_curcop->cop_io) : NULL;
ac27b0f5
NIS		 334 if (type && *type)
335 PerlIO_apply_layers(aTHX_ fp,mode,type);
336
54310121 337 if (gimme == G_VOID) {
96827780
MB		 338 char tmpbuf[256];
339 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
54310121 340 ;
341 }
342 else if (gimme == G_SCALAR) {
75af1a9c
DM		 343 ENTER;
344 SAVESPTR(PL_rs);
fa326138 345 PL_rs = &PL_sv_undef;
c69006e4 346 sv_setpvn(TARG, "", 0); /* note that this preserves previous buffer */
bd61b366 347 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a0d0e21e 348 ;
75af1a9c 349 LEAVE;
a0d0e21e 350 XPUSHs(TARG);
aa689395 351 SvTAINTED_on(TARG);
a0d0e21e
LW		 352 }
353 else {
a0d0e21e 354 for (;;) {
561b68a9 355 SV * const sv = newSV(79);
bd61b366 356 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW		 357 SvREFCNT_dec(sv);
358 break;
359 }
360 XPUSHs(sv_2mortal(sv));
361 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 362 SvPV_shrink_to_cur(sv);
a0d0e21e 363 }
aa689395 364 SvTAINTED_on(sv);
a0d0e21e
LW		 365 }
366 }
2fbb330f 367 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 368 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 369 }
370 else {
37038d91 371 STATUS_NATIVE_CHILD_SET(-1);
54310121 372 if (gimme == G_SCALAR)
a0d0e21e
LW		 373 RETPUSHUNDEF;
374 }
375
376 RETURN;
377}
378
379PP(pp_glob)
380{
27da23d5 381 dVAR;
a0d0e21e 382 OP *result;
f5284f61
IZ		 383 tryAMAGICunTARGET(iter, -1);
384
71686f12
GS		 385 /* Note that we only ever get here if File::Glob fails to load
386 * without at the same time croaking, for some reason, or if
387 * perl was built with PERL_EXTERNAL_GLOB */
388
a0d0e21e 389 ENTER;
a0d0e21e 390
c90c0ff4 391#ifndef VMS
3280af22 392 if (PL_tainting) {
7bac28a0 393 /*
394 * The external globbing program may use things we can't control,
395 * so for security reasons we must assume the worst.
396 */
397 TAINT;
22c35a8c 398 taint_proper(PL_no_security, "glob");
7bac28a0 399 }
c90c0ff4 400#endif /* !VMS */
7bac28a0 401
3280af22
NIS		 402 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
403 PL_last_in_gv = (GV*)*PL_stack_sp--;
a0d0e21e 404
3280af22 405 SAVESPTR(PL_rs); /* This is not permanent, either. */
396482e1 406 PL_rs = sv_2mortal(newSVpvs("\000"));
c07a80fd 407#ifndef DOSISH
408#ifndef CSH
6b88bc9c 409 *SvPVX(PL_rs) = '\n';
a0d0e21e 410#endif /* !CSH */
55497cff 411#endif /* !DOSISH */
c07a80fd 412
a0d0e21e
LW		 413 result = do_readline();
414 LEAVE;
415 return result;
416}
417
a0d0e21e
LW		 418PP(pp_rcatline)
419{
97aff369 420 dVAR;
146174a9 421 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 422 return do_readline();
423}
424
425PP(pp_warn)
426{
97aff369 427 dVAR; dSP; dMARK;
06bf62c7 428 SV *tmpsv;
e1ec3a88 429 const char *tmps;
06bf62c7 430 STRLEN len;
b59aed67 431 if (SP - MARK > 1) {
a0d0e21e 432 dTARGET;
3280af22 433 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 434 tmpsv = TARG;
a0d0e21e
LW		 435 SP = MARK + 1;
436 }
b59aed67
TS		 437 else if (SP == MARK) {
438 tmpsv = &PL_sv_no;
439 EXTEND(SP, 1);
440 }
a0d0e21e 441 else {
06bf62c7 442 tmpsv = TOPs;
a0d0e21e 443 }
e62f0680 444 tmps = SvPV_const(tmpsv, len);
7b102d90 445 if ((!tmps || !len) && PL_errgv) {
1b6737cc 446 SV * const error = ERRSV;
862a34c6 447 SvUPGRADE(error, SVt_PV);
4e6ea2c3 448 if (SvPOK(error) && SvCUR(error))
396482e1 449 sv_catpvs(error, "\t...caught");
06bf62c7 450 tmpsv = error;
e62f0680 451 tmps = SvPV_const(tmpsv, len);
a0d0e21e 452 }
06bf62c7 453 if (!tmps || !len)
396482e1 454 tmpsv = sv_2mortal(newSVpvs("Warning: something's wrong"));
06bf62c7 455
95b63a38 456 Perl_warn(aTHX_ "%"SVf, (void*)tmpsv);
a0d0e21e
LW		 457 RETSETYES;
458}
459
460PP(pp_die)
461{
97aff369 462 dVAR; dSP; dMARK;
e1ec3a88 463 const char *tmps;
06bf62c7
GS		 464 SV *tmpsv;
465 STRLEN len;
466 bool multiarg = 0;
96e176bf
CL		 467#ifdef VMS
468 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
469#endif
a0d0e21e
LW		 470 if (SP - MARK != 1) {
471 dTARGET;
3280af22 472 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 473 tmpsv = TARG;
5c144d81 474 tmps = SvPV_const(tmpsv, len);
06bf62c7 475 multiarg = 1;
a0d0e21e
LW		 476 SP = MARK + 1;
477 }
478 else {
4e6ea2c3 479 tmpsv = TOPs;
bd61b366 480 tmps = SvROK(tmpsv) ? NULL : SvPV_const(tmpsv, len);
a0d0e21e 481 }
06bf62c7 482 if (!tmps || !len) {
0bcc34c2 483 SV * const error = ERRSV;
862a34c6 484 SvUPGRADE(error, SVt_PV);
06bf62c7
GS		 485 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
486 if (!multiarg)
4e6ea2c3 487 SvSetSV(error,tmpsv);
06bf62c7 488 else if (sv_isobject(error)) {
7452cf6a
AL		 489 HV * const stash = SvSTASH(SvRV(error));
490 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
05423cc9 491 if (gv) {
7452cf6a
AL		 492 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
493 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
05423cc9
GS		 494 EXTEND(SP, 3);
495 PUSHMARK(SP);
496 PUSHs(error);
497 PUSHs(file);
498 PUSHs(line);
499 PUTBACK;
864dbfa3
GS		 500 call_sv((SV*)GvCV(gv),
501 G_SCALAR|G_EVAL|G_KEEPERR);
3280af22 502 sv_setsv(error,*PL_stack_sp--);
05423cc9
GS		 503 }
504 }
bd61b366 505 DIE(aTHX_ NULL);
4e6ea2c3
GS		 506 }
507 else {
508 if (SvPOK(error) && SvCUR(error))
396482e1 509 sv_catpvs(error, "\t...propagated");
06bf62c7 510 tmpsv = error;
dc8d642c
DM		 511 if (SvOK(tmpsv))
512 tmps = SvPV_const(tmpsv, len);
513 else
bd61b366 514 tmps = NULL;
4e6ea2c3 515 }
a0d0e21e 516 }
06bf62c7 517 if (!tmps || !len)
396482e1 518 tmpsv = sv_2mortal(newSVpvs("Died"));
06bf62c7 519
95b63a38 520 DIE(aTHX_ "%"SVf, (void*)tmpsv);
a0d0e21e
LW		 521}
522
523/* I/O. */
524
525PP(pp_open)
526{
27da23d5 527 dVAR; dSP;
a567e93b
NIS		 528 dMARK; dORIGMARK;
529 dTARGET;
a0d0e21e 530 SV *sv;
5b468f54 531 IO *io;
5c144d81 532 const char *tmps;
a0d0e21e 533 STRLEN len;
a567e93b 534 bool ok;
a0d0e21e 535
c4420975
AL		 536 GV * const gv = (GV *)*++MARK;
537
5f05dabc 538 if (!isGV(gv))
cea2e8a9 539 DIE(aTHX_ PL_no_usym, "filehandle");
5b468f54 540 if ((io = GvIOp(gv)))
36477c24 541 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 542
c4420975
AL		 543 if (io) {
544 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
545 if (mg) {
546 /* Method's args are same as ours ... */
547 /* ... except handle is replaced by the object */
548 *MARK-- = SvTIED_obj((SV*)io, mg);
549 PUSHMARK(MARK);
550 PUTBACK;
551 ENTER;
552 call_method("OPEN", G_SCALAR);
553 LEAVE;
554 SPAGAIN;
555 RETURN;
556 }
4592e6ca
NIS		 557 }
558
a567e93b
NIS		 559 if (MARK < SP) {
560 sv = *++MARK;
561 }
562 else {
35a08ec7 563 sv = GvSVn(gv);
a567e93b
NIS		 564 }
565
5c144d81 566 tmps = SvPV_const(sv, len);
4608196e 567 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
a567e93b
NIS		 568 SP = ORIGMARK;
569 if (ok)
3280af22
NIS		 570 PUSHi( (I32)PL_forkprocess );
571 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 572 PUSHi(0);
573 else
574 RETPUSHUNDEF;
575 RETURN;
576}
577
578PP(pp_close)
579{
27da23d5 580 dVAR; dSP;
5b468f54 581 IO *io;
1d603a67 582 MAGIC *mg;
c4420975 583 GV * const gv = (MAXARG == 0) ? PL_defoutgv : (GV*)POPs;
1d603a67 584
5b468f54
AMS		 585 if (gv && (io = GvIO(gv))
586 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
587 {
1d603a67 588 PUSHMARK(SP);
5b468f54 589 XPUSHs(SvTIED_obj((SV*)io, mg));
1d603a67
GB		 590 PUTBACK;
591 ENTER;
864dbfa3 592 call_method("CLOSE", G_SCALAR);
1d603a67
GB		 593 LEAVE;
594 SPAGAIN;
595 RETURN;
596 }
a0d0e21e 597 EXTEND(SP, 1);
54310121 598 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 599 RETURN;
600}
601
602PP(pp_pipe_op)
603{
a0d0e21e 604#ifdef HAS_PIPE
97aff369 605 dVAR;
9cad6237 606 dSP;
a0d0e21e
LW		 607 register IO *rstio;
608 register IO *wstio;
609 int fd[2];
610
c4420975
AL		 611 GV * const wgv = (GV*)POPs;
612 GV * const rgv = (GV*)POPs;
a0d0e21e
LW		 613
614 if (!rgv || !wgv)
615 goto badexit;
616
4633a7c4 617 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
cea2e8a9 618 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 619 rstio = GvIOn(rgv);
620 wstio = GvIOn(wgv);
621
622 if (IoIFP(rstio))
623 do_close(rgv, FALSE);
624 if (IoIFP(wstio))
625 do_close(wgv, FALSE);
626
6ad3d225 627 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 628 goto badexit;
629
460c8493
IZ		 630 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
631 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 632 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 633 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 634 IoTYPE(rstio) = IoTYPE_RDONLY;
635 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 636
637 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 638 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
6ad3d225 639 else PerlLIO_close(fd[0]);
760ac839 640 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
6ad3d225 641 else PerlLIO_close(fd[1]);
a0d0e21e
LW		 642 goto badexit;
643 }
4771b018
GS		 644#if defined(HAS_FCNTL) && defined(F_SETFD)
645 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
646 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
647#endif
a0d0e21e
LW		 648 RETPUSHYES;
649
650badexit:
651 RETPUSHUNDEF;
652#else
cea2e8a9 653 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 654#endif
655}
656
657PP(pp_fileno)
658{
27da23d5 659 dVAR; dSP; dTARGET;
a0d0e21e
LW		 660 GV *gv;
661 IO *io;
760ac839 662 PerlIO *fp;
4592e6ca
NIS		 663 MAGIC *mg;
664
a0d0e21e
LW		 665 if (MAXARG < 1)
666 RETPUSHUNDEF;
667 gv = (GV*)POPs;
4592e6ca 668
5b468f54
AMS		 669 if (gv && (io = GvIO(gv))
670 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
671 {
4592e6ca 672 PUSHMARK(SP);
5b468f54 673 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 674 PUTBACK;
675 ENTER;
864dbfa3 676 call_method("FILENO", G_SCALAR);
4592e6ca
NIS		 677 LEAVE;
678 SPAGAIN;
679 RETURN;
680 }
681
c289d2f7
JH		 682 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
683 /* Can't do this because people seem to do things like
684 defined(fileno($foo)) to check whether $foo is a valid fh.
685 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
686 report_evil_fh(gv, io, PL_op->op_type);
687 */
a0d0e21e 688 RETPUSHUNDEF;
c289d2f7
JH		 689 }
690
760ac839 691 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 692 RETURN;
693}
694
695PP(pp_umask)
696{
97aff369 697 dVAR;
27da23d5 698 dSP;
d7e492a4 699#ifdef HAS_UMASK
27da23d5 700 dTARGET;
761237fe 701 Mode_t anum;
a0d0e21e 702
a0d0e21e 703 if (MAXARG < 1) {
6ad3d225
GS		 704 anum = PerlLIO_umask(0);
705 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 706 }
707 else
6ad3d225 708 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 709 TAINT_PROPER("umask");
710 XPUSHi(anum);
711#else
a0288114 712 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS		 713 * Otherwise it's harmless and more useful to just return undef
714 * since 'group' and 'other' concepts probably don't exist here. */
715 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 716 DIE(aTHX_ "umask not implemented");
6b88bc9c 717 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 718#endif
719 RETURN;
720}
721
722PP(pp_binmode)
723{
27da23d5 724 dVAR; dSP;
a0d0e21e
LW		 725 GV *gv;
726 IO *io;
760ac839 727 PerlIO *fp;
4592e6ca 728 MAGIC *mg;
a0714e2c 729 SV *discp = NULL;
a0d0e21e
LW		 730
731 if (MAXARG < 1)
732 RETPUSHUNDEF;
60382766 733 if (MAXARG > 1) {
16fe6d59 734 discp = POPs;
60382766 735 }
a0d0e21e 736
301e8125 737 gv = (GV*)POPs;
4592e6ca 738
5b468f54
AMS		 739 if (gv && (io = GvIO(gv))
740 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
741 {
4592e6ca 742 PUSHMARK(SP);
5b468f54 743 XPUSHs(SvTIED_obj((SV*)io, mg));
16fe6d59
GS		 744 if (discp)
745 XPUSHs(discp);
4592e6ca
NIS		 746 PUTBACK;
747 ENTER;
864dbfa3 748 call_method("BINMODE", G_SCALAR);
4592e6ca
NIS		 749 LEAVE;
750 SPAGAIN;
751 RETURN;
752 }
a0d0e21e
LW		 753
754 EXTEND(SP, 1);
50f846a7 755 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7
JH		 756 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
757 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 758 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC		 759 RETPUSHUNDEF;
760 }
a0d0e21e 761
40d98b49 762 PUTBACK;
60382766 763 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
bd61b366 764 (discp) ? SvPV_nolen_const(discp) : NULL)) {
38af81ff
JH		 765 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
766 if (!PerlIO_binmode(aTHX_ IoOFP(io),IoTYPE(io),
767 mode_from_discipline(discp),
bd61b366 768 (discp) ? SvPV_nolen_const(discp) : NULL)) {
38af81ff
JH		 769 SPAGAIN;
770 RETPUSHUNDEF;
771 }
772 }
40d98b49 773 SPAGAIN;
a0d0e21e 774 RETPUSHYES;
40d98b49
JH		 775 }
776 else {
777 SPAGAIN;
a0d0e21e 778 RETPUSHUNDEF;
40d98b49 779 }
a0d0e21e
LW		 780}
781
782PP(pp_tie)
783{
27da23d5 784 dVAR; dSP; dMARK;
a0d0e21e
LW		 785 HV* stash;
786 GV *gv;
a0d0e21e 787 SV *sv;
1df70142 788 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 789 const char *methname;
14befaf4 790 int how = PERL_MAGIC_tied;
e336de0d 791 U32 items;
c4420975 792 SV *varsv = *++MARK;
a0d0e21e 793
6b05c17a
NIS		 794 switch(SvTYPE(varsv)) {
795 case SVt_PVHV:
796 methname = "TIEHASH";
bfcb3514 797 HvEITER_set((HV *)varsv, 0);
6b05c17a
NIS		 798 break;
799 case SVt_PVAV:
800 methname = "TIEARRAY";
801 break;
802 case SVt_PVGV:
7fb37951
AMS		 803#ifdef GV_UNIQUE_CHECK
804 if (GvUNIQUE((GV*)varsv)) {
805 Perl_croak(aTHX_ "Attempt to tie unique GV");
5bd07a3d
DM		 806 }
807#endif
6b05c17a 808 methname = "TIEHANDLE";
14befaf4 809 how = PERL_MAGIC_tiedscalar;
5b468f54
AMS		 810 /* For tied filehandles, we apply tiedscalar magic to the IO
811 slot of the GP rather than the GV itself. AMS 20010812 */
812 if (!GvIOp(varsv))
813 GvIOp(varsv) = newIO();
814 varsv = (SV *)GvIOp(varsv);
6b05c17a
NIS		 815 break;
816 default:
817 methname = "TIESCALAR";
14befaf4 818 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 819 break;
820 }
e336de0d
GS		 821 items = SP - MARK++;
822 if (sv_isobject(*MARK)) {
6b05c17a 823 ENTER;
e788e7d3 824 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 825 PUSHMARK(SP);
eb160463 826 EXTEND(SP,(I32)items);
e336de0d
GS		 827 while (items--)
828 PUSHs(*MARK++);
829 PUTBACK;
864dbfa3 830 call_method(methname, G_SCALAR);
301e8125 831 }
6b05c17a 832 else {
864dbfa3 833 /* Not clear why we don't call call_method here too.
6b05c17a
NIS		 834 * perhaps to get different error message ?
835 */
e336de0d 836 stash = gv_stashsv(*MARK, FALSE);
6b05c17a 837 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 838 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
95b63a38 839 methname, (void*)*MARK);
6b05c17a
NIS		 840 }
841 ENTER;
e788e7d3 842 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 843 PUSHMARK(SP);
eb160463 844 EXTEND(SP,(I32)items);
e336de0d
GS		 845 while (items--)
846 PUSHs(*MARK++);
847 PUTBACK;
864dbfa3 848 call_sv((SV*)GvCV(gv), G_SCALAR);
6b05c17a 849 }
a0d0e21e
LW		 850 SPAGAIN;
851
852 sv = TOPs;
d3acc0f7 853 POPSTACK;
a0d0e21e 854 if (sv_isobject(sv)) {
33c27489 855 sv_unmagic(varsv, how);
ae21d580 856 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 857 if (varsv == SvRV(sv) &&
d87ebaca
YST		 858 (SvTYPE(varsv) == SVt_PVAV ||
859 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 860 Perl_croak(aTHX_
861 "Self-ties of arrays and hashes are not supported");
a0714e2c 862 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e
LW		 863 }
864 LEAVE;
3280af22 865 SP = PL_stack_base + markoff;
a0d0e21e
LW		 866 PUSHs(sv);
867 RETURN;
868}
869
870PP(pp_untie)
871{
27da23d5 872 dVAR; dSP;
5b468f54 873 MAGIC *mg;
33c27489 874 SV *sv = POPs;
1df70142 875 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 876 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 877
5b468f54
AMS		 878 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
879 RETPUSHYES;
880
65eba18f 881 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 882 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 883 if (obj) {
c4420975 884 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 885 CV *cv;
c4420975 886 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0
JS		 887 PUSHMARK(SP);
888 XPUSHs(SvTIED_obj((SV*)gv, mg));
889 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
890 PUTBACK;
891 ENTER;
892 call_sv((SV *)cv, G_VOID);
893 LEAVE;
894 SPAGAIN;
895 }
041457d9 896 else if (mg && SvREFCNT(obj) > 1 && ckWARN(WARN_UNTIE)) {
9014280d 897 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
fa2b88e0
JS		 898 "untie attempted while %"UVuf" inner references still exist",
899 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 900 }
cbdc8872 901 }
902 }
38193a09 903 sv_unmagic(sv, how) ;
55497cff 904 RETPUSHYES;
a0d0e21e
LW		 905}
906
c07a80fd 907PP(pp_tied)
908{
97aff369 909 dVAR;
39644a26 910 dSP;
1b6737cc 911 const MAGIC *mg;
33c27489 912 SV *sv = POPs;
1df70142 913 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 914 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54
AMS		 915
916 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
917 RETPUSHUNDEF;
c07a80fd 918
155aba94 919 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 920 SV *osv = SvTIED_obj(sv, mg);
921 if (osv == mg->mg_obj)
922 osv = sv_mortalcopy(osv);
923 PUSHs(osv);
924 RETURN;
c07a80fd 925 }
c07a80fd 926 RETPUSHUNDEF;
927}
928
a0d0e21e
LW		 929PP(pp_dbmopen)
930{
27da23d5 931 dVAR; dSP;
a0d0e21e
LW		 932 dPOPPOPssrl;
933 HV* stash;
934 GV *gv;
a0d0e21e 935
1b6737cc 936 HV * const hv = (HV*)POPs;
7c58897d 937 SV * const sv = sv_2mortal(newSVpvs("AnyDBM_File"));
a0d0e21e 938 stash = gv_stashsv(sv, FALSE);
8ebc5c01 939 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 940 PUTBACK;
864dbfa3 941 require_pv("AnyDBM_File.pm");
a0d0e21e 942 SPAGAIN;
8ebc5c01 943 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 944 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 945 }
946
57d3b86d 947 ENTER;
924508f0 948 PUSHMARK(SP);
6b05c17a 949
924508f0 950 EXTEND(SP, 5);
a0d0e21e
LW		 951 PUSHs(sv);
952 PUSHs(left);
953 if (SvIV(right))
b448e4fe 954 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
a0d0e21e 955 else
b448e4fe 956 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
a0d0e21e 957 PUSHs(right);
57d3b86d 958 PUTBACK;
864dbfa3 959 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 960 SPAGAIN;
961
962 if (!sv_isobject(TOPs)) {
924508f0
GS		 963 SP--;
964 PUSHMARK(SP);
a0d0e21e
LW		 965 PUSHs(sv);
966 PUSHs(left);
b448e4fe 967 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
a0d0e21e 968 PUSHs(right);
a0d0e21e 969 PUTBACK;
864dbfa3 970 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 971 SPAGAIN;
972 }
973
6b05c17a 974 if (sv_isobject(TOPs)) {
14befaf4 975 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
bd61b366 976 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 977 }
a0d0e21e
LW		 978 LEAVE;
979 RETURN;
980}
981
a0d0e21e
LW		 982PP(pp_sselect)
983{
a0d0e21e 984#ifdef HAS_SELECT
97aff369 985 dVAR; dSP; dTARGET;
a0d0e21e
LW		 986 register I32 i;
987 register I32 j;
988 register char *s;
989 register SV *sv;
65202027 990 NV value;
a0d0e21e
LW		 991 I32 maxlen = 0;
992 I32 nfound;
993 struct timeval timebuf;
994 struct timeval *tbuf = &timebuf;
995 I32 growsize;
996 char *fd_sets[4];
997#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
998 I32 masksize;
999 I32 offset;
1000 I32 k;
1001
1002# if BYTEORDER & 0xf0000
1003# define ORDERBYTE (0x88888888 - BYTEORDER)
1004# else
1005# define ORDERBYTE (0x4444 - BYTEORDER)
1006# endif
1007
1008#endif
1009
1010 SP -= 4;
1011 for (i = 1; i <= 3; i++) {
c4420975 1012 SV * const sv = SP[i];
15547071
GA		 1013 if (!SvOK(sv))
1014 continue;
1015 if (SvREADONLY(sv)) {
729c079f
NC		 1016 if (SvIsCOW(sv))
1017 sv_force_normal_flags(sv, 0);
15547071 1018 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
729c079f
NC		 1019 DIE(aTHX_ PL_no_modify);
1020 }
4ef2275c
GA		 1021 if (!SvPOK(sv)) {
1022 if (ckWARN(WARN_MISC))
1023 Perl_warner(aTHX_ packWARN(WARN_MISC), "Non-string passed as bitmask");
1024 SvPV_force_nolen(sv); /* force string conversion */
1025 }
729c079f 1026 j = SvCUR(sv);
a0d0e21e
LW		 1027 if (maxlen < j)
1028 maxlen = j;
1029 }
1030
5ff3f7a4 1031/* little endians can use vecs directly */
e366b469 1032#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1033# ifdef NFDBITS
a0d0e21e 1034
5ff3f7a4
GS		 1035# ifndef NBBY
1036# define NBBY 8
1037# endif
a0d0e21e
LW		 1038
1039 masksize = NFDBITS / NBBY;
5ff3f7a4 1040# else
a0d0e21e 1041 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1042# endif
a0d0e21e
LW		 1043 Zero(&fd_sets[0], 4, char*);
1044#endif
1045
ad517f75
MHM		 1046# if SELECT_MIN_BITS == 1
1047 growsize = sizeof(fd_set);
1048# else
1049# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1050# undef SELECT_MIN_BITS
1051# define SELECT_MIN_BITS __FD_SETSIZE
1052# endif
e366b469
PG		 1053 /* If SELECT_MIN_BITS is greater than one we most probably will want
1054 * to align the sizes with SELECT_MIN_BITS/8 because for example
1055 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1056 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1057 * on (sets/tests/clears bits) is 32 bits. */
1058 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG		 1059# endif
1060
a0d0e21e
LW		 1061 sv = SP[4];
1062 if (SvOK(sv)) {
1063 value = SvNV(sv);
1064 if (value < 0.0)
1065 value = 0.0;
1066 timebuf.tv_sec = (long)value;
65202027 1067 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1068 timebuf.tv_usec = (long)(value * 1000000.0);
1069 }
1070 else
4608196e 1071 tbuf = NULL;
a0d0e21e
LW		 1072
1073 for (i = 1; i <= 3; i++) {
1074 sv = SP[i];
15547071 1075 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW		 1076 fd_sets[i] = 0;
1077 continue;
1078 }
4ef2275c 1079 assert(SvPOK(sv));
a0d0e21e
LW		 1080 j = SvLEN(sv);
1081 if (j < growsize) {
1082 Sv_Grow(sv, growsize);
a0d0e21e 1083 }
c07a80fd 1084 j = SvCUR(sv);
1085 s = SvPVX(sv) + j;
1086 while (++j <= growsize) {
1087 *s++ = '\0';
1088 }
1089
a0d0e21e
LW		 1090#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1091 s = SvPVX(sv);
a02a5408 1092 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW		 1093 for (offset = 0; offset < growsize; offset += masksize) {
1094 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1095 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1096 }
1097#else
1098 fd_sets[i] = SvPVX(sv);
1099#endif
1100 }
1101
dc4c69d9
JH		 1102#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1103 /* Can't make just the (void*) conditional because that would be
1104 * cpp #if within cpp macro, and not all compilers like that. */
1105 nfound = PerlSock_select(
1106 maxlen * 8,
1107 (Select_fd_set_t) fd_sets[1],
1108 (Select_fd_set_t) fd_sets[2],
1109 (Select_fd_set_t) fd_sets[3],
1110 (void*) tbuf); /* Workaround for compiler bug. */
1111#else
6ad3d225 1112 nfound = PerlSock_select(
a0d0e21e
LW		 1113 maxlen * 8,
1114 (Select_fd_set_t) fd_sets[1],
1115 (Select_fd_set_t) fd_sets[2],
1116 (Select_fd_set_t) fd_sets[3],
1117 tbuf);
dc4c69d9 1118#endif
a0d0e21e
LW		 1119 for (i = 1; i <= 3; i++) {
1120 if (fd_sets[i]) {
1121 sv = SP[i];
1122#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1123 s = SvPVX(sv);
1124 for (offset = 0; offset < growsize; offset += masksize) {
1125 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1126 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1127 }
1128 Safefree(fd_sets[i]);
1129#endif
1130 SvSETMAGIC(sv);
1131 }
1132 }
1133
4189264e 1134 PUSHi(nfound);
a0d0e21e 1135 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1136 value = (NV)(timebuf.tv_sec) +
1137 (NV)(timebuf.tv_usec) / 1000000.0;
7c58897d 1138 PUSHs(sv_2mortal(newSVnv(value)));
a0d0e21e
LW		 1139 }
1140 RETURN;
1141#else
cea2e8a9 1142 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1143#endif
1144}
1145
4633a7c4 1146void
864dbfa3 1147Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1148{
97aff369 1149 dVAR;
b37c2d43 1150 SvREFCNT_inc_simple_void(gv);
3280af22
NIS		 1151 if (PL_defoutgv)
1152 SvREFCNT_dec(PL_defoutgv);
1153 PL_defoutgv = gv;
4633a7c4
LW		 1154}
1155
a0d0e21e
LW		 1156PP(pp_select)
1157{
97aff369 1158 dVAR; dSP; dTARGET;
4633a7c4 1159 HV *hv;
1df70142 1160 GV * const newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
7452cf6a 1161 GV * egv = GvEGV(PL_defoutgv);
4633a7c4 1162
4633a7c4 1163 if (!egv)
3280af22 1164 egv = PL_defoutgv;
4633a7c4
LW		 1165 hv = GvSTASH(egv);
1166 if (! hv)
3280af22 1167 XPUSHs(&PL_sv_undef);
4633a7c4 1168 else {
c4420975 1169 GV * const * const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1170 if (gvp && *gvp == egv) {
bd61b366 1171 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1172 XPUSHTARG;
1173 }
1174 else {
1175 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1176 }
4633a7c4
LW		 1177 }
1178
1179 if (newdefout) {
ded8aa31
GS		 1180 if (!GvIO(newdefout))
1181 gv_IOadd(newdefout);
4633a7c4
LW		 1182 setdefout(newdefout);
1183 }
1184
a0d0e21e
LW		 1185 RETURN;
1186}
1187
1188PP(pp_getc)
1189{
27da23d5 1190 dVAR; dSP; dTARGET;
90133b69 1191 IO *io = NULL;
2ae324a7 1192 MAGIC *mg;
1b6737cc 1193 GV * const gv = (MAXARG==0) ? PL_stdingv : (GV*)POPs;
2ae324a7 1194
5b468f54
AMS		 1195 if (gv && (io = GvIO(gv))
1196 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1197 {
f54cb97a 1198 const I32 gimme = GIMME_V;
2ae324a7 1199 PUSHMARK(SP);
5b468f54 1200 XPUSHs(SvTIED_obj((SV*)io, mg));
2ae324a7 1201 PUTBACK;
1202 ENTER;
864dbfa3 1203 call_method("GETC", gimme);
2ae324a7 1204 LEAVE;
1205 SPAGAIN;
54310121 1206 if (gimme == G_SCALAR)
1207 SvSetMagicSV_nosteal(TARG, TOPs);
2ae324a7 1208 RETURN;
1209 }
90133b69 1210 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
041457d9
DM		 1211 if ((!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1212 && ckWARN2(WARN_UNOPENED,WARN_CLOSED))
90133b69 1213 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 1214 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1215 RETPUSHUNDEF;
90133b69 1216 }
bbce6d69 1217 TAINT;
c69006e4 1218 sv_setpvn(TARG, " ", 1);
9bc64814 1219 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1220 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1221 /* Find out how many bytes the char needs */
aa07b2f6 1222 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS		 1223 if (len > 1) {
1224 SvGROW(TARG,len+1);
1225 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1226 SvCUR_set(TARG,1+len);
1227 }
1228 SvUTF8_on(TARG);
1229 }
a0d0e21e
LW		 1230 PUSHTARG;
1231 RETURN;
1232}
1233
76e3520e 1234STATIC OP *
cea2e8a9 1235S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1236{
27da23d5 1237 dVAR;
c09156bb 1238 register PERL_CONTEXT *cx;
f54cb97a 1239 const I32 gimme = GIMME_V;
a0d0e21e
LW		 1240
1241 ENTER;
1242 SAVETMPS;
1243
146174a9 1244 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
a0d0e21e 1245 PUSHFORMAT(cx);
f39bc417 1246 cx->blk_sub.retop = retop;
fd617465
DM		 1247 SAVECOMPPAD();
1248 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
a0d0e21e 1249
4633a7c4 1250 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1251 return CvSTART(cv);
1252}
1253
1254PP(pp_enterwrite)
1255{
97aff369 1256 dVAR;
39644a26 1257 dSP;
a0d0e21e
LW		 1258 register GV *gv;
1259 register IO *io;
1260 GV *fgv;
1261 CV *cv;
1262
1263 if (MAXARG == 0)
3280af22 1264 gv = PL_defoutgv;
a0d0e21e
LW		 1265 else {
1266 gv = (GV*)POPs;
1267 if (!gv)
3280af22 1268 gv = PL_defoutgv;
a0d0e21e
LW		 1269 }
1270 EXTEND(SP, 1);
1271 io = GvIO(gv);
1272 if (!io) {
1273 RETPUSHNO;
1274 }
1275 if (IoFMT_GV(io))
1276 fgv = IoFMT_GV(io);
1277 else
1278 fgv = gv;
1279
f4a7049d
NC		 1280 if (!fgv) {
1281 DIE(aTHX_ "Not a format reference");
1282 }
a0d0e21e 1283 cv = GvFORM(fgv);
a0d0e21e 1284 if (!cv) {
f4a7049d
NC		 1285 SV * const tmpsv = sv_newmortal();
1286 const char *name;
1287 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1288 name = SvPV_nolen_const(tmpsv);
1289 if (name && *name)
1290 DIE(aTHX_ "Undefined format \"%s\" called", name);
cea2e8a9 1291 DIE(aTHX_ "Not a format reference");
a0d0e21e 1292 }
44a8e56a 1293 if (CvCLONE(cv))
1294 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1295
44a8e56a 1296 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1297 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1298}
1299
1300PP(pp_leavewrite)
1301{
27da23d5 1302 dVAR; dSP;
1b6737cc
AL		 1303 GV * const gv = cxstack[cxstack_ix].blk_sub.gv;
1304 register IO * const io = GvIOp(gv);
8b8cacda 1305 PerlIO *ofp;
760ac839 1306 PerlIO *fp;
8772537c
AL		 1307 SV **newsp;
1308 I32 gimme;
c09156bb 1309 register PERL_CONTEXT *cx;
a0d0e21e 1310
8b8cacda
B		 1311 if (!io || !(ofp = IoOFP(io)))
1312 goto forget_top;
1313
760ac839 1314 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1315 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1316
3280af22
NIS		 1317 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1318 PL_formtarget != PL_toptarget)
a0d0e21e 1319 {
4633a7c4
LW		 1320 GV *fgv;
1321 CV *cv;
a0d0e21e
LW		 1322 if (!IoTOP_GV(io)) {
1323 GV *topgv;
a0d0e21e
LW		 1324
1325 if (!IoTOP_NAME(io)) {
1b6737cc 1326 SV *topname;
a0d0e21e
LW		 1327 if (!IoFMT_NAME(io))
1328 IoFMT_NAME(io) = savepv(GvNAME(gv));
0bd0581c 1329 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
f776e3cd 1330 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1331 if ((topgv && GvFORM(topgv)) ||
fafc274c 1332 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1333 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1334 else
89529cee 1335 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1336 }
f776e3cd 1337 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1338 if (!topgv || !GvFORM(topgv)) {
b929a54b 1339 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1340 goto forget_top;
1341 }
1342 IoTOP_GV(io) = topgv;
1343 }
748a9306
LW		 1344 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1345 I32 lines = IoLINES_LEFT(io);
504618e9 1346 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD		 1347 if (lines <= 0) /* Yow, header didn't even fit!!! */
1348 goto forget_top;
748a9306
LW		 1349 while (lines-- > 0) {
1350 s = strchr(s, '\n');
1351 if (!s)
1352 break;
1353 s++;
1354 }
1355 if (s) {
f54cb97a 1356 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1357 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1358 do_print(PL_formtarget, ofp);
1359 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1360 sv_chop(PL_formtarget, s);
1361 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1362 }
1363 }
a0d0e21e 1364 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1365 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1366 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1367 IoPAGE(io)++;
3280af22 1368 PL_formtarget = PL_toptarget;
748a9306 1369 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1370 fgv = IoTOP_GV(io);
1371 if (!fgv)
cea2e8a9 1372 DIE(aTHX_ "bad top format reference");
4633a7c4 1373 cv = GvFORM(fgv);
1df70142
AL		 1374 if (!cv) {
1375 SV * const sv = sv_newmortal();
b464bac0 1376 const char *name;
bd61b366 1377 gv_efullname4(sv, fgv, NULL, FALSE);
e62f0680 1378 name = SvPV_nolen_const(sv);
2dd78f96 1379 if (name && *name)
0e528f24
JH		 1380 DIE(aTHX_ "Undefined top format \"%s\" called", name);
1381 else
1382 DIE(aTHX_ "Undefined top format called");
4633a7c4 1383 }
0e528f24 1384 if (cv && CvCLONE(cv))
44a8e56a 1385 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
0e528f24 1386 return doform(cv, gv, PL_op);
a0d0e21e
LW		 1387 }
1388
1389 forget_top:
3280af22 1390 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1391 POPFORMAT(cx);
1392 LEAVE;
1393
1394 fp = IoOFP(io);
1395 if (!fp) {
599cee73 1396 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1397 if (IoIFP(io))
1398 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1399 else if (ckWARN(WARN_CLOSED))
bc37a18f 1400 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1401 }
3280af22 1402 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1403 }
1404 else {
3280af22 1405 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1406 if (ckWARN(WARN_IO))
9014280d 1407 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1408 }
d75029d0 1409 if (!do_print(PL_formtarget, fp))
3280af22 1410 PUSHs(&PL_sv_no);
a0d0e21e 1411 else {
3280af22
NIS		 1412 FmLINES(PL_formtarget) = 0;
1413 SvCUR_set(PL_formtarget, 0);
1414 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1415 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1416 (void)PerlIO_flush(fp);
3280af22 1417 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1418 }
1419 }
9cbac4c7 1420 /* bad_ofp: */
3280af22 1421 PL_formtarget = PL_bodytarget;
a0d0e21e 1422 PUTBACK;
29033a8a
SH		 1423 PERL_UNUSED_VAR(newsp);
1424 PERL_UNUSED_VAR(gimme);
f39bc417 1425 return cx->blk_sub.retop;
a0d0e21e
LW		 1426}
1427
1428PP(pp_prtf)
1429{
27da23d5 1430 dVAR; dSP; dMARK; dORIGMARK;
a0d0e21e 1431 IO *io;
760ac839 1432 PerlIO *fp;
26db47c4 1433 SV *sv;
46fc3d4c 1434 MAGIC *mg;
a0d0e21e 1435
c4420975 1436 GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv;
46fc3d4c 1437
5b468f54
AMS		 1438 if (gv && (io = GvIO(gv))
1439 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1440 {
46fc3d4c 1441 if (MARK == ORIGMARK) {
4352c267 1442 MEXTEND(SP, 1);
46fc3d4c 1443 ++MARK;
1444 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1445 ++SP;
1446 }
1447 PUSHMARK(MARK - 1);
5b468f54 1448 *MARK = SvTIED_obj((SV*)io, mg);
46fc3d4c 1449 PUTBACK;
1450 ENTER;
864dbfa3 1451 call_method("PRINTF", G_SCALAR);
46fc3d4c 1452 LEAVE;
1453 SPAGAIN;
1454 MARK = ORIGMARK + 1;
1455 *MARK = *SP;
1456 SP = MARK;
1457 RETURN;
1458 }
1459
561b68a9 1460 sv = newSV(0);
a0d0e21e 1461 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1462 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1463 report_evil_fh(gv, io, PL_op->op_type);
93189314 1464 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1465 goto just_say_no;
1466 }
1467 else if (!(fp = IoOFP(io))) {
599cee73 1468 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1469 if (IoIFP(io))
1470 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1471 else if (ckWARN(WARN_CLOSED))
bc37a18f 1472 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1473 }
93189314 1474 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1475 goto just_say_no;
1476 }
1477 else {
1478 do_sprintf(sv, SP - MARK, MARK + 1);
1479 if (!do_print(sv, fp))
1480 goto just_say_no;
1481
1482 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1483 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1484 goto just_say_no;
1485 }
1486 SvREFCNT_dec(sv);
1487 SP = ORIGMARK;
3280af22 1488 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1489 RETURN;
1490
1491 just_say_no:
1492 SvREFCNT_dec(sv);
1493 SP = ORIGMARK;
3280af22 1494 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1495 RETURN;
1496}
1497
c07a80fd 1498PP(pp_sysopen)
1499{
97aff369 1500 dVAR;
39644a26 1501 dSP;
1df70142
AL		 1502 const int perm = (MAXARG > 3) ? POPi : 0666;
1503 const int mode = POPi;
1b6737cc
AL		 1504 SV * const sv = POPs;
1505 GV * const gv = (GV *)POPs;
1506 STRLEN len;
c07a80fd 1507
4592e6ca 1508 /* Need TIEHANDLE method ? */
1b6737cc 1509 const char * const tmps = SvPV_const(sv, len);
e62f0680 1510 /* FIXME? do_open should do const */
4608196e 1511 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1512 IoLINES(GvIOp(gv)) = 0;
3280af22 1513 PUSHs(&PL_sv_yes);
c07a80fd 1514 }
1515 else {
3280af22 1516 PUSHs(&PL_sv_undef);
c07a80fd 1517 }
1518 RETURN;
1519}
1520
a0d0e21e
LW		 1521PP(pp_sysread)
1522{
27da23d5 1523 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1524 int offset;
a0d0e21e
LW		 1525 IO *io;
1526 char *buffer;
5b54f415 1527 SSize_t length;
eb5c063a 1528 SSize_t count;
1e422769 1529 Sock_size_t bufsize;
748a9306 1530 SV *bufsv;
a0d0e21e 1531 STRLEN blen;
eb5c063a 1532 int fp_utf8;
1dd30107
NC		 1533 int buffer_utf8;
1534 SV *read_target;
eb5c063a
NIS		 1535 Size_t got = 0;
1536 Size_t wanted;
1d636c13 1537 bool charstart = FALSE;
87330c3c
JH		 1538 STRLEN charskip = 0;
1539 STRLEN skip = 0;
a0d0e21e 1540
1b6737cc 1541 GV * const gv = (GV*)*++MARK;
5b468f54 1542 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1543 && gv && (io = GvIO(gv)) )
137443ea 1544 {
1b6737cc
AL		 1545 const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1546 if (mg) {
1547 SV *sv;
1548 PUSHMARK(MARK-1);
1549 *MARK = SvTIED_obj((SV*)io, mg);
1550 ENTER;
1551 call_method("READ", G_SCALAR);
1552 LEAVE;
1553 SPAGAIN;
1554 sv = POPs;
1555 SP = ORIGMARK;
1556 PUSHs(sv);
1557 RETURN;
1558 }
2ae324a7 1559 }
1560
a0d0e21e
LW		 1561 if (!gv)
1562 goto say_undef;
748a9306 1563 bufsv = *++MARK;
ff68c719 1564 if (! SvOK(bufsv))
1565 sv_setpvn(bufsv, "", 0);
a0d0e21e 1566 length = SvIVx(*++MARK);
748a9306 1567 SETERRNO(0,0);
a0d0e21e
LW		 1568 if (MARK < SP)
1569 offset = SvIVx(*++MARK);
1570 else
1571 offset = 0;
1572 io = GvIO(gv);
b5fe5ca2
SR		 1573 if (!io || !IoIFP(io)) {
1574 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1575 report_evil_fh(gv, io, PL_op->op_type);
1576 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1577 goto say_undef;
b5fe5ca2 1578 }
0064a8a9 1579 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1580 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1581 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1582 SvUTF8_on(bufsv);
9b9d7ce8 1583 buffer_utf8 = 0;
7d59b7e4
NIS		 1584 }
1585 else {
1586 buffer = SvPV_force(bufsv, blen);
1dd30107 1587 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4
NIS		 1588 }
1589 if (length < 0)
1590 DIE(aTHX_ "Negative length");
eb5c063a 1591 wanted = length;
7d59b7e4 1592
d0965105
JH		 1593 charstart = TRUE;
1594 charskip = 0;
87330c3c 1595 skip = 0;
d0965105 1596
a0d0e21e 1597#ifdef HAS_SOCKET
533c011a 1598 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1599 char namebuf[MAXPATHLEN];
17a8c7ba 1600#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
490ab354
JH		 1601 bufsize = sizeof (struct sockaddr_in);
1602#else
46fc3d4c 1603 bufsize = sizeof namebuf;
490ab354 1604#endif
abf95952
IZ		 1605#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1606 if (bufsize >= 256)
1607 bufsize = 255;
1608#endif
eb160463 1609 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1610 /* 'offset' means 'flags' here */
eb5c063a 1611 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
46fc3d4c 1612 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1613 if (count < 0)
a0d0e21e 1614 RETPUSHUNDEF;
4107cc59
OF		 1615#ifdef EPOC
1616 /* Bogus return without padding */
1617 bufsize = sizeof (struct sockaddr_in);
1618#endif
eb5c063a 1619 SvCUR_set(bufsv, count);
748a9306
LW		 1620 *SvEND(bufsv) = '\0';
1621 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1622 if (fp_utf8)
1623 SvUTF8_on(bufsv);
748a9306 1624 SvSETMAGIC(bufsv);
aac0dd9a 1625 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1626 if (!(IoFLAGS(io) & IOf_UNTAINT))
1627 SvTAINTED_on(bufsv);
a0d0e21e 1628 SP = ORIGMARK;
46fc3d4c 1629 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1630 PUSHs(TARG);
1631 RETURN;
1632 }
1633#else
911d147d 1634 if (PL_op->op_type == OP_RECV)
cea2e8a9 1635 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1636#endif
eb5c063a
NIS		 1637 if (DO_UTF8(bufsv)) {
1638 /* offset adjust in characters not bytes */
1639 blen = sv_len_utf8(bufsv);
7d59b7e4 1640 }
bbce6d69 1641 if (offset < 0) {
eb160463 1642 if (-offset > (int)blen)
cea2e8a9 1643 DIE(aTHX_ "Offset outside string");
bbce6d69 1644 offset += blen;
1645 }
eb5c063a
NIS		 1646 if (DO_UTF8(bufsv)) {
1647 /* convert offset-as-chars to offset-as-bytes */
6960c29a
CH		 1648 if (offset >= (int)blen)
1649 offset += SvCUR(bufsv) - blen;
1650 else
1651 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS		 1652 }
1653 more_bytes:
cd52b7b2 1654 bufsize = SvCUR(bufsv);
1dd30107
NC		 1655 /* Allocating length + offset + 1 isn't perfect in the case of reading
1656 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1657 unduly.
1658 (should be 2 * length + offset + 1, or possibly something longer if
1659 PL_encoding is true) */
eb160463 1660 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
27da23d5 1661 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
cd52b7b2 1662 Zero(buffer+bufsize, offset-bufsize, char);
1663 }
eb5c063a 1664 buffer = buffer + offset;
1dd30107
NC		 1665 if (!buffer_utf8) {
1666 read_target = bufsv;
1667 } else {
1668 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1669 concatenate it to the current buffer. */
1670
1671 /* Truncate the existing buffer to the start of where we will be
1672 reading to: */
1673 SvCUR_set(bufsv, offset);
1674
1675 read_target = sv_newmortal();
862a34c6 1676 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1677 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1678 }
eb5c063a 1679
533c011a 1680 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1681#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1682 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1683 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1684 buffer, length, 0);
a7092146
GS		 1685 }
1686 else
1687#endif
1688 {
eb5c063a
NIS		 1689 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1690 buffer, length);
a7092146 1691 }
a0d0e21e
LW		 1692 }
1693 else
1694#ifdef HAS_SOCKET__bad_code_maybe
50952442 1695 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1696 char namebuf[MAXPATHLEN];
490ab354
JH		 1697#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1698 bufsize = sizeof (struct sockaddr_in);
1699#else
46fc3d4c 1700 bufsize = sizeof namebuf;
490ab354 1701#endif
eb5c063a 1702 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1703 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1704 }
1705 else
1706#endif
3b02c43c 1707 {
eb5c063a
NIS		 1708 count = PerlIO_read(IoIFP(io), buffer, length);
1709 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1710 if (count == 0 && PerlIO_error(IoIFP(io)))
1711 count = -1;
3b02c43c 1712 }
eb5c063a 1713 if (count < 0) {
a00b5bd3 1714 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
6e6ef6b2 1715 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
a0d0e21e 1716 goto say_undef;
af8c498a 1717 }
aa07b2f6 1718 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1719 *SvEND(read_target) = '\0';
1720 (void)SvPOK_only(read_target);
0064a8a9 1721 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1722 /* Look at utf8 we got back and count the characters */
1df70142 1723 const char *bend = buffer + count;
eb5c063a 1724 while (buffer < bend) {
d0965105
JH		 1725 if (charstart) {
1726 skip = UTF8SKIP(buffer);
1727 charskip = 0;
1728 }
1729 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1730 /* partial character - try for rest of it */
1731 length = skip - (bend-buffer);
aa07b2f6 1732 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1733 charstart = FALSE;
1734 charskip += count;
eb5c063a
NIS		 1735 goto more_bytes;
1736 }
1737 else {
1738 got++;
1739 buffer += skip;
d0965105
JH		 1740 charstart = TRUE;
1741 charskip = 0;
eb5c063a
NIS		 1742 }
1743 }
1744 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1745 provided amount read (count) was what was requested (length)
1746 */
1747 if (got < wanted && count == length) {
d0965105 1748 length = wanted - got;
aa07b2f6 1749 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1750 goto more_bytes;
1751 }
1752 /* return value is character count */
1753 count = got;
1754 SvUTF8_on(bufsv);
1755 }
1dd30107
NC		 1756 else if (buffer_utf8) {
1757 /* Let svcatsv upgrade the bytes we read in to utf8.
1758 The buffer is a mortal so will be freed soon. */
1759 sv_catsv_nomg(bufsv, read_target);
1760 }
748a9306 1761 SvSETMAGIC(bufsv);
aac0dd9a 1762 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1763 if (!(IoFLAGS(io) & IOf_UNTAINT))
1764 SvTAINTED_on(bufsv);
a0d0e21e 1765 SP = ORIGMARK;
eb5c063a 1766 PUSHi(count);
a0d0e21e
LW		 1767 RETURN;
1768
1769 say_undef:
1770 SP = ORIGMARK;
1771 RETPUSHUNDEF;
1772}
1773
a0d0e21e
LW		 1774PP(pp_send)
1775{
27da23d5 1776 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1777 IO *io;
748a9306 1778 SV *bufsv;
83003860 1779 const char *buffer;
64a1bc8e 1780 Size_t length = 0;
8c99d73e 1781 SSize_t retval;
a0d0e21e 1782 STRLEN blen;
1d603a67 1783 MAGIC *mg;
64a1bc8e
NC		 1784 const int op_type = PL_op->op_type;
1785
7452cf6a 1786 GV *const gv = (GV*)*++MARK;
14befaf4 1787 if (PL_op->op_type == OP_SYSWRITE
5b468f54
AMS		 1788 && gv && (io = GvIO(gv))
1789 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
14befaf4 1790 {
1d603a67 1791 SV *sv;
64a1bc8e
NC		 1792
1793 if (MARK == SP - 1) {
1794 EXTEND(SP, 1000);
1795 sv = sv_2mortal(newSViv(sv_len(*SP)));
1796 PUSHs(sv);
1797 PUTBACK;
1798 }
1d603a67 1799
64a1bc8e
NC		 1800 PUSHMARK(ORIGMARK);
1801 *(ORIGMARK+1) = SvTIED_obj((SV*)io, mg);
1d603a67 1802 ENTER;
864dbfa3 1803 call_method("WRITE", G_SCALAR);
1d603a67
GB		 1804 LEAVE;
1805 SPAGAIN;
1806 sv = POPs;
1807 SP = ORIGMARK;
1808 PUSHs(sv);
1809 RETURN;
1810 }
a0d0e21e
LW		 1811 if (!gv)
1812 goto say_undef;
64a1bc8e 1813
748a9306 1814 bufsv = *++MARK;
64a1bc8e
NC		 1815
1816 if (op_type == OP_SYSWRITE) {
1817 if (MARK >= SP) {
1818 length = (Size_t) sv_len(bufsv);
1819 } else {
8c99d73e 1820#if Size_t_size > IVSIZE
64a1bc8e 1821 length = (Size_t)SvNVx(*++MARK);
146174a9 1822#else
64a1bc8e 1823 length = (Size_t)SvIVx(*++MARK);
146174a9 1824#endif
64a1bc8e
NC		 1825 if ((SSize_t)length < 0)
1826 DIE(aTHX_ "Negative length");
1827 }
1828 }
748a9306 1829 SETERRNO(0,0);
a0d0e21e
LW		 1830 io = GvIO(gv);
1831 if (!io || !IoIFP(io)) {
8c99d73e 1832 retval = -1;
bc37a18f
RG		 1833 if (ckWARN(WARN_CLOSED))
1834 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 1835 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1836 goto say_undef;
1837 }
1838
1839 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7
NC		 1840 if (!SvUTF8(bufsv)) {
1841 bufsv = sv_2mortal(newSVsv(bufsv));
1842 buffer = sv_2pvutf8(bufsv, &blen);
1843 } else
83003860 1844 buffer = SvPV_const(bufsv, blen);
a0d0e21e 1845 }
7d59b7e4 1846 else {
4de5f5ca
JH		 1847 if (DO_UTF8(bufsv)) {
1848 /* Not modifying source SV, so making a temporary copy. */
1849 bufsv = sv_2mortal(newSVsv(bufsv));
1850 sv_utf8_downgrade(bufsv, FALSE);
1851 }
83003860 1852 buffer = SvPV_const(bufsv, blen);
7d59b7e4
NIS		 1853 }
1854
64a1bc8e 1855 if (op_type == OP_SYSWRITE) {
7d59b7e4
NIS		 1856 IV offset;
1857 if (DO_UTF8(bufsv)) {
1858 /* length and offset are in chars */
1859 blen = sv_len_utf8(bufsv);
1860 }
bbce6d69 1861 if (MARK < SP) {
a0d0e21e 1862 offset = SvIVx(*++MARK);
bbce6d69 1863 if (offset < 0) {
eb160463 1864 if (-offset > (IV)blen)
cea2e8a9 1865 DIE(aTHX_ "Offset outside string");
bbce6d69 1866 offset += blen;
eb160463 1867 } else if (offset >= (IV)blen && blen > 0)
cea2e8a9 1868 DIE(aTHX_ "Offset outside string");
bbce6d69 1869 } else
a0d0e21e
LW		 1870 offset = 0;
1871 if (length > blen - offset)
1872 length = blen - offset;
7d59b7e4 1873 if (DO_UTF8(bufsv)) {
83003860 1874 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
7d59b7e4
NIS		 1875 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1876 }
1877 else {
1878 buffer = buffer+offset;
1879 }
a7092146 1880#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1881 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1882 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1883 buffer, length, 0);
a7092146
GS		 1884 }
1885 else
1886#endif
1887 {
94e4c244 1888 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1889 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1890 buffer, length);
a7092146 1891 }
a0d0e21e
LW		 1892 }
1893#ifdef HAS_SOCKET
64a1bc8e
NC		 1894 else {
1895 const int flags = SvIVx(*++MARK);
1896 if (SP > MARK) {
1897 STRLEN mlen;
1898 char * const sockbuf = SvPVx(*++MARK, mlen);
1899 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1900 flags, (struct sockaddr *)sockbuf, mlen);
1901 }
1902 else {
1903 retval
1904 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1905 }
a0d0e21e 1906 }
a0d0e21e
LW		 1907#else
1908 else
cea2e8a9 1909 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1910#endif
8c99d73e 1911 if (retval < 0)
a0d0e21e
LW		 1912 goto say_undef;
1913 SP = ORIGMARK;
f36eea10
JH		 1914 if (DO_UTF8(bufsv))
1915 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
8c99d73e
GS		 1916#if Size_t_size > IVSIZE
1917 PUSHn(retval);
1918#else
1919 PUSHi(retval);
1920#endif
a0d0e21e
LW		 1921 RETURN;
1922
1923 say_undef:
1924 SP = ORIGMARK;
1925 RETPUSHUNDEF;
1926}
1927
a0d0e21e
LW		 1928PP(pp_eof)
1929{
27da23d5 1930 dVAR; dSP;
a0d0e21e
LW		 1931 GV *gv;
1932
32da55ab 1933 if (MAXARG == 0) {
146174a9
CB		 1934 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1935 IO *io;
ed2c6b9b 1936 gv = PL_last_in_gv = GvEGV(PL_argvgv);
146174a9
CB		 1937 io = GvIO(gv);
1938 if (io && !IoIFP(io)) {
1939 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1940 IoLINES(io) = 0;
1941 IoFLAGS(io) &= ~IOf_START;
4608196e 1942 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
146174a9
CB		 1943 sv_setpvn(GvSV(gv), "-", 1);
1944 SvSETMAGIC(GvSV(gv));
1945 }
1946 else if (!nextargv(gv))
1947 RETPUSHYES;
1948 }
1949 }
1950 else
1951 gv = PL_last_in_gv; /* eof */
1952 }
a0d0e21e 1953 else
146174a9 1954 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 1955
6136c704
AL		 1956 if (gv) {
1957 IO * const io = GvIO(gv);
1958 MAGIC * mg;
1959 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
1960 PUSHMARK(SP);
1961 XPUSHs(SvTIED_obj((SV*)io, mg));
1962 PUTBACK;
1963 ENTER;
1964 call_method("EOF", G_SCALAR);
1965 LEAVE;
1966 SPAGAIN;
1967 RETURN;
1968 }
4592e6ca
NIS		 1969 }
1970
54310121 1971 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 1972 RETURN;
1973}
1974
1975PP(pp_tell)
1976{
27da23d5 1977 dVAR; dSP; dTARGET;
301e8125 1978 GV *gv;
5b468f54 1979 IO *io;
4592e6ca 1980 MAGIC *mg;
a0d0e21e 1981
c4420975
AL		 1982 if (MAXARG != 0)
1983 PL_last_in_gv = (GV*)POPs;
1984 gv = PL_last_in_gv;
4592e6ca 1985
5b468f54
AMS		 1986 if (gv && (io = GvIO(gv))
1987 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1988 {
4592e6ca 1989 PUSHMARK(SP);
5b468f54 1990 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1991 PUTBACK;
1992 ENTER;
864dbfa3 1993 call_method("TELL", G_SCALAR);
4592e6ca
NIS		 1994 LEAVE;
1995 SPAGAIN;
1996 RETURN;
1997 }
1998
146174a9
CB		 1999#if LSEEKSIZE > IVSIZE
2000 PUSHn( do_tell(gv) );
2001#else
a0d0e21e 2002 PUSHi( do_tell(gv) );
146174a9 2003#endif
a0d0e21e
LW		 2004 RETURN;
2005}
2006
137443ea 2007PP(pp_sysseek)
2008{
27da23d5 2009 dVAR; dSP;
5b468f54 2010 IO *io;
1df70142 2011 const int whence = POPi;
146174a9 2012#if LSEEKSIZE > IVSIZE
7452cf6a 2013 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2014#else
7452cf6a 2015 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2016#endif
4592e6ca 2017 MAGIC *mg;
a0d0e21e 2018
7452cf6a 2019 GV * const gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 2020
5b468f54
AMS		 2021 if (gv && (io = GvIO(gv))
2022 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
2023 {
4592e6ca 2024 PUSHMARK(SP);
5b468f54 2025 XPUSHs(SvTIED_obj((SV*)io, mg));
cb50131a
CB		 2026#if LSEEKSIZE > IVSIZE
2027 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
2028#else
b448e4fe 2029 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 2030#endif
b448e4fe 2031 XPUSHs(sv_2mortal(newSViv(whence)));
4592e6ca
NIS		 2032 PUTBACK;
2033 ENTER;
864dbfa3 2034 call_method("SEEK", G_SCALAR);
4592e6ca
NIS		 2035 LEAVE;
2036 SPAGAIN;
2037 RETURN;
2038 }
2039
533c011a 2040 if (PL_op->op_type == OP_SEEK)
8903cb82 2041 PUSHs(boolSV(do_seek(gv, offset, whence)));
2042 else {
0bcc34c2 2043 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2044 if (sought < 0)
146174a9
CB		 2045 PUSHs(&PL_sv_undef);
2046 else {
7452cf6a 2047 SV* const sv = sought ?
146174a9 2048#if LSEEKSIZE > IVSIZE
b448e4fe 2049 newSVnv((NV)sought)
146174a9 2050#else
b448e4fe 2051 newSViv(sought)
146174a9
CB		 2052#endif
2053 : newSVpvn(zero_but_true, ZBTLEN);
2054 PUSHs(sv_2mortal(sv));
2055 }
8903cb82 2056 }
a0d0e21e
LW		 2057 RETURN;
2058}
2059
2060PP(pp_truncate)
2061{
97aff369 2062 dVAR;
39644a26 2063 dSP;
8c99d73e
GS		 2064 /* There seems to be no consensus on the length type of truncate()
2065 * and ftruncate(), both off_t and size_t have supporters. In
2066 * general one would think that when using large files, off_t is
2067 * at least as wide as size_t, so using an off_t should be okay. */
2068 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2069 Off_t len;
a0d0e21e 2070
25342a55 2071#if Off_t_size > IVSIZE
0bcc34c2 2072 len = (Off_t)POPn;
8c99d73e 2073#else
0bcc34c2 2074 len = (Off_t)POPi;
8c99d73e
GS		 2075#endif
2076 /* Checking for length < 0 is problematic as the type might or
301e8125 2077 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2078 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2079 SETERRNO(0,0);
d05c1ba0 2080 {
d05c1ba0
JH		 2081 int result = 1;
2082 GV *tmpgv;
090bf15b
SR		 2083 IO *io;
2084
d05c1ba0 2085 if (PL_op->op_flags & OPf_SPECIAL) {
f776e3cd 2086 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
d05c1ba0 2087
090bf15b
SR		 2088 do_ftruncate_gv:
2089 if (!GvIO(tmpgv))
2090 result = 0;
d05c1ba0 2091 else {
090bf15b
SR		 2092 PerlIO *fp;
2093 io = GvIOp(tmpgv);
2094 do_ftruncate_io:
2095 TAINT_PROPER("truncate");
2096 if (!(fp = IoIFP(io))) {
2097 result = 0;
2098 }
2099 else {
2100 PerlIO_flush(fp);
cbdc8872 2101#ifdef HAS_TRUNCATE
090bf15b 2102 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2103#else
090bf15b 2104 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2105#endif
090bf15b
SR		 2106 result = 0;
2107 }
d05c1ba0 2108 }
cbdc8872 2109 }
d05c1ba0 2110 else {
7452cf6a 2111 SV * const sv = POPs;
83003860 2112 const char *name;
7a5fd60d 2113
d05c1ba0
JH		 2114 if (SvTYPE(sv) == SVt_PVGV) {
2115 tmpgv = (GV*)sv; /* *main::FRED for example */
090bf15b 2116 goto do_ftruncate_gv;
d05c1ba0
JH		 2117 }
2118 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2119 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
090bf15b
SR		 2120 goto do_ftruncate_gv;
2121 }
2122 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2123 io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
2124 goto do_ftruncate_io;
d05c1ba0 2125 }
1e422769 2126
83003860 2127 name = SvPV_nolen_const(sv);
d05c1ba0 2128 TAINT_PROPER("truncate");
cbdc8872 2129#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2130 if (truncate(name, len) < 0)
2131 result = 0;
cbdc8872 2132#else
d05c1ba0 2133 {
7452cf6a 2134 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2135
7452cf6a 2136 if (tmpfd < 0)
cbdc8872 2137 result = 0;
d05c1ba0
JH		 2138 else {
2139 if (my_chsize(tmpfd, len) < 0)
2140 result = 0;
2141 PerlLIO_close(tmpfd);
2142 }
cbdc8872 2143 }
a0d0e21e 2144#endif
d05c1ba0 2145 }
a0d0e21e 2146
d05c1ba0
JH		 2147 if (result)
2148 RETPUSHYES;
2149 if (!errno)
93189314 2150 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2151 RETPUSHUNDEF;
2152 }
a0d0e21e
LW		 2153}
2154
a0d0e21e
LW		 2155PP(pp_ioctl)
2156{
97aff369 2157 dVAR; dSP; dTARGET;
7452cf6a 2158 SV * const argsv = POPs;
1df70142 2159 const unsigned int func = POPu;
e1ec3a88 2160 const int optype = PL_op->op_type;
7452cf6a 2161 GV * const gv = (GV*)POPs;
4608196e 2162 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2163 char *s;
324aa91a 2164 IV retval;
a0d0e21e 2165
748a9306 2166 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2167 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2168 report_evil_fh(gv, io, PL_op->op_type);
93189314 2169 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2170 RETPUSHUNDEF;
2171 }
2172
748a9306 2173 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2174 STRLEN len;
324aa91a 2175 STRLEN need;
748a9306 2176 s = SvPV_force(argsv, len);
324aa91a
HF		 2177 need = IOCPARM_LEN(func);
2178 if (len < need) {
2179 s = Sv_Grow(argsv, need + 1);
2180 SvCUR_set(argsv, need);
a0d0e21e
LW		 2181 }
2182
748a9306 2183 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2184 }
2185 else {
748a9306 2186 retval = SvIV(argsv);
c529f79d 2187 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2188 }
2189
ed4b2e6b 2190 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2191
2192 if (optype == OP_IOCTL)
2193#ifdef HAS_IOCTL
76e3520e 2194 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2195#else
cea2e8a9 2196 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2197#endif
2198 else
c214f4ad
WB		 2199#ifndef HAS_FCNTL
2200 DIE(aTHX_ "fcntl is not implemented");
2201#else
55497cff 2202#if defined(OS2) && defined(__EMX__)
760ac839 2203 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2204#else
760ac839 2205 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2206#endif
6652bd42 2207#endif
a0d0e21e 2208
6652bd42 2209#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2210 if (SvPOK(argsv)) {
2211 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2212 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2213 OP_NAME(PL_op));
748a9306
LW		 2214 s[SvCUR(argsv)] = 0; /* put our null back */
2215 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2216 }
2217
2218 if (retval == -1)
2219 RETPUSHUNDEF;
2220 if (retval != 0) {
2221 PUSHi(retval);
2222 }
2223 else {
8903cb82 2224 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2225 }
4808266b 2226#endif
c214f4ad 2227 RETURN;
a0d0e21e
LW		 2228}
2229
2230PP(pp_flock)
2231{
9cad6237 2232#ifdef FLOCK
97aff369 2233 dVAR; dSP; dTARGET;
a0d0e21e 2234 I32 value;
bc37a18f 2235 IO *io = NULL;
760ac839 2236 PerlIO *fp;
7452cf6a
AL		 2237 const int argtype = POPi;
2238 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
16d20bd9 2239
bc37a18f
RG		 2240 if (gv && (io = GvIO(gv)))
2241 fp = IoIFP(io);
2242 else {
4608196e 2243 fp = NULL;
bc37a18f
RG		 2244 io = NULL;
2245 }
0bcc34c2 2246 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2247 if (fp) {
68dc0745 2248 (void)PerlIO_flush(fp);
76e3520e 2249 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2250 }
cb50131a 2251 else {
bc37a18f
RG		 2252 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2253 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2254 value = 0;
93189314 2255 SETERRNO(EBADF,RMS_IFI);
cb50131a 2256 }
a0d0e21e
LW		 2257 PUSHi(value);
2258 RETURN;
2259#else
cea2e8a9 2260 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2261#endif
2262}
2263
2264/* Sockets. */
2265
2266PP(pp_socket)
2267{
a0d0e21e 2268#ifdef HAS_SOCKET
97aff369 2269 dVAR; dSP;
7452cf6a
AL		 2270 const int protocol = POPi;
2271 const int type = POPi;
2272 const int domain = POPi;
2273 GV * const gv = (GV*)POPs;
2274 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e
LW		 2275 int fd;
2276
c289d2f7
JH		 2277 if (!gv || !io) {
2278 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2279 report_evil_fh(gv, io, PL_op->op_type);
5ee74a84 2280 if (io && IoIFP(io))
c289d2f7 2281 do_close(gv, FALSE);
93189314 2282 SETERRNO(EBADF,LIB_INVARG);
a0d0e21e
LW		 2283 RETPUSHUNDEF;
2284 }
2285
57171420
BS		 2286 if (IoIFP(io))
2287 do_close(gv, FALSE);
2288
a0d0e21e 2289 TAINT_PROPER("socket");
6ad3d225 2290 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2291 if (fd < 0)
2292 RETPUSHUNDEF;
460c8493
IZ		 2293 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2294 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2295 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2296 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2297 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2298 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2299 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2300 RETPUSHUNDEF;
2301 }
8d2a6795
GS		 2302#if defined(HAS_FCNTL) && defined(F_SETFD)
2303 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2304#endif
a0d0e21e 2305
d5ff79b3
OF		 2306#ifdef EPOC
2307 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2308#endif
2309
a0d0e21e
LW		 2310 RETPUSHYES;
2311#else
cea2e8a9 2312 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2313#endif
2314}
2315
2316PP(pp_sockpair)
2317{
c95c94b1 2318#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2319 dVAR; dSP;
7452cf6a
AL		 2320 const int protocol = POPi;
2321 const int type = POPi;
2322 const int domain = POPi;
2323 GV * const gv2 = (GV*)POPs;
2324 GV * const gv1 = (GV*)POPs;
2325 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2326 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
a0d0e21e
LW		 2327 int fd[2];
2328
c289d2f7
JH		 2329 if (!gv1 || !gv2 || !io1 || !io2) {
2330 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2331 if (!gv1 || !io1)
2332 report_evil_fh(gv1, io1, PL_op->op_type);
2333 if (!gv2 || !io2)
2334 report_evil_fh(gv1, io2, PL_op->op_type);
2335 }
5ee74a84 2336 if (io1 && IoIFP(io1))
c289d2f7 2337 do_close(gv1, FALSE);
5ee74a84 2338 if (io2 && IoIFP(io2))
c289d2f7 2339 do_close(gv2, FALSE);
a0d0e21e 2340 RETPUSHUNDEF;
c289d2f7 2341 }
a0d0e21e 2342
dc0d0a5f
JH		 2343 if (IoIFP(io1))
2344 do_close(gv1, FALSE);
2345 if (IoIFP(io2))
2346 do_close(gv2, FALSE);
57171420 2347
a0d0e21e 2348 TAINT_PROPER("socketpair");
6ad3d225 2349 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2350 RETPUSHUNDEF;
460c8493
IZ		 2351 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2352 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2353 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ		 2354 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2355 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2356 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2357 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2358 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2359 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2360 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2361 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2362 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2363 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2364 RETPUSHUNDEF;
2365 }
8d2a6795
GS		 2366#if defined(HAS_FCNTL) && defined(F_SETFD)
2367 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2368 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2369#endif
a0d0e21e
LW		 2370
2371 RETPUSHYES;
2372#else
cea2e8a9 2373 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2374#endif
2375}
2376
2377PP(pp_bind)
2378{
a0d0e21e 2379#ifdef HAS_SOCKET
97aff369 2380 dVAR; dSP;
7452cf6a 2381 SV * const addrsv = POPs;
349d4f2f
NC		 2382 /* OK, so on what platform does bind modify addr? */
2383 const char *addr;
7452cf6a
AL		 2384 GV * const gv = (GV*)POPs;
2385 register IO * const io = GvIOn(gv);
a0d0e21e 2386 STRLEN len;
eec2d3df 2387 int bind_ok = 0;
a0d0e21e
LW		 2388
2389 if (!io || !IoIFP(io))
2390 goto nuts;
2391
349d4f2f 2392 addr = SvPV_const(addrsv, len);
a0d0e21e 2393 TAINT_PROPER("bind");
eec2d3df
GS		 2394 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2395 (struct sockaddr *)addr, len) >= 0)
2396 bind_ok = 1;
2397
eec2d3df
GS		 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);
93189314 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
97aff369 2417 dVAR; dSP;
7452cf6a
AL		 2418 SV * const addrsv = POPs;
2419 GV * const gv = (GV*)POPs;
2420 register IO * const io = GvIOn(gv);
349d4f2f 2421 const char *addr;
a0d0e21e
LW		 2422 STRLEN len;
2423
2424 if (!io || !IoIFP(io))
2425 goto nuts;
2426
349d4f2f 2427 addr = SvPV_const(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);
93189314 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
97aff369 2447 dVAR; dSP;
7452cf6a
AL		 2448 const int backlog = POPi;
2449 GV * const gv = (GV*)POPs;
2450 register IO * const 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);
93189314 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
97aff369 2473 dVAR; dSP; dTARGET;
a0d0e21e
LW		 2474 register IO *nstio;
2475 register IO *gstio;
93d47a36
JH		 2476 char namebuf[MAXPATHLEN];
2477#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2478 Sock_size_t len = sizeof (struct sockaddr_in);
2479#else
2480 Sock_size_t len = sizeof namebuf;
2481#endif
7452cf6a
AL		 2482 GV * const ggv = (GV*)POPs;
2483 GV * const ngv = (GV*)POPs;
a0d0e21e
LW		 2484 int fd;
2485
a0d0e21e
LW		 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);
93d47a36 2496 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
a0d0e21e
LW		 2497 if (fd < 0)
2498 goto badexit;
a70048fb
AB		 2499 if (IoIFP(nstio))
2500 do_close(ngv, FALSE);
460c8493
IZ		 2501 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2502 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2503 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2504 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2505 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2506 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2507 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2508 goto badexit;
2509 }
8d2a6795
GS		 2510#if defined(HAS_FCNTL) && defined(F_SETFD)
2511 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2512#endif
a0d0e21e 2513
ed79a026 2514#ifdef EPOC
93d47a36 2515 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
a9f1f6b0 2516 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026 2517#endif
381c1bae 2518#ifdef __SCO_VERSION__
93d47a36 2519 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2520#endif
ed79a026 2521
93d47a36 2522 PUSHp(namebuf, len);
a0d0e21e
LW		 2523 RETURN;
2524
2525nuts:
599cee73 2526 if (ckWARN(WARN_CLOSED))
bc37a18f 2527 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
93189314 2528 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2529
2530badexit:
2531 RETPUSHUNDEF;
2532
2533#else
cea2e8a9 2534 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2535#endif
2536}
2537
2538PP(pp_shutdown)
2539{
a0d0e21e 2540#ifdef HAS_SOCKET
97aff369 2541 dVAR; dSP; dTARGET;
7452cf6a
AL		 2542 const int how = POPi;
2543 GV * const gv = (GV*)POPs;
2544 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 2545
2546 if (!io || !IoIFP(io))
2547 goto nuts;
2548
6ad3d225 2549 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2550 RETURN;
2551
2552nuts:
599cee73 2553 if (ckWARN(WARN_CLOSED))
bc37a18f 2554 report_evil_fh(gv, io, PL_op->op_type);
93189314 2555 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2556 RETPUSHUNDEF;
2557#else
cea2e8a9 2558 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2559#endif
2560}
2561
a0d0e21e
LW		 2562PP(pp_ssockopt)
2563{
a0d0e21e 2564#ifdef HAS_SOCKET
97aff369 2565 dVAR; dSP;
7452cf6a 2566 const int optype = PL_op->op_type;
561b68a9 2567 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2568 const unsigned int optname = (unsigned int) POPi;
2569 const unsigned int lvl = (unsigned int) POPi;
2570 GV * const gv = (GV*)POPs;
2571 register IO * const io = GvIOn(gv);
a0d0e21e 2572 int fd;
1e422769 2573 Sock_size_t len;
a0d0e21e 2574
a0d0e21e
LW		 2575 if (!io || !IoIFP(io))
2576 goto nuts;
2577
760ac839 2578 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2579 switch (optype) {
2580 case OP_GSOCKOPT:
748a9306 2581 SvGROW(sv, 257);
a0d0e21e 2582 (void)SvPOK_only(sv);
748a9306
LW		 2583 SvCUR_set(sv,256);
2584 *SvEND(sv) ='\0';
1e422769 2585 len = SvCUR(sv);
6ad3d225 2586 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2587 goto nuts2;
1e422769 2588 SvCUR_set(sv, len);
748a9306 2589 *SvEND(sv) ='\0';
a0d0e21e
LW		 2590 PUSHs(sv);
2591 break;
2592 case OP_SSOCKOPT: {
1215b447
JH		 2593#if defined(__SYMBIAN32__)
2594# define SETSOCKOPT_OPTION_VALUE_T void *
2595#else
2596# define SETSOCKOPT_OPTION_VALUE_T const char *
2597#endif
2598 /* XXX TODO: We need to have a proper type (a Configure probe,
2599 * etc.) for what the C headers think of the third argument of
2600 * setsockopt(), the option_value read-only buffer: is it
2601 * a "char *", or a "void *", const or not. Some compilers
2602 * don't take kindly to e.g. assuming that "char *" implicitly
2603 * promotes to a "void *", or to explicitly promoting/demoting
2604 * consts to non/vice versa. The "const void *" is the SUS
2605 * definition, but that does not fly everywhere for the above
2606 * reasons. */
2607 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769 2608 int aint;
2609 if (SvPOKp(sv)) {
2d8e6c8d 2610 STRLEN l;
1215b447 2611 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2612 len = l;
1e422769 2613 }
56ee1660 2614 else {
a0d0e21e 2615 aint = (int)SvIV(sv);
1215b447 2616 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2617 len = sizeof(int);
2618 }
6ad3d225 2619 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2620 goto nuts2;
3280af22 2621 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2622 }
2623 break;
2624 }
2625 RETURN;
2626
2627nuts:
599cee73 2628 if (ckWARN(WARN_CLOSED))
bc37a18f 2629 report_evil_fh(gv, io, optype);
93189314 2630 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2631nuts2:
2632 RETPUSHUNDEF;
2633
2634#else
af51a00e 2635 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2636#endif
2637}
2638
a0d0e21e
LW		 2639PP(pp_getpeername)
2640{
a0d0e21e 2641#ifdef HAS_SOCKET
97aff369 2642 dVAR; dSP;
7452cf6a
AL		 2643 const int optype = PL_op->op_type;
2644 GV * const gv = (GV*)POPs;
2645 register IO * const io = GvIOn(gv);
2646 Sock_size_t len;
a0d0e21e
LW		 2647 SV *sv;
2648 int fd;
a0d0e21e
LW		 2649
2650 if (!io || !IoIFP(io))
2651 goto nuts;
2652
561b68a9 2653 sv = sv_2mortal(newSV(257));
748a9306 2654 (void)SvPOK_only(sv);
1e422769 2655 len = 256;
2656 SvCUR_set(sv, len);
748a9306 2657 *SvEND(sv) ='\0';
760ac839 2658 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2659 switch (optype) {
2660 case OP_GETSOCKNAME:
6ad3d225 2661 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2662 goto nuts2;
2663 break;
2664 case OP_GETPEERNAME:
6ad3d225 2665 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2666 goto nuts2;
490ab354
JH		 2667#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2668 {
2669 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";
2670 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2671 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2672 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2673 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2674 goto nuts2;
490ab354
JH		 2675 }
2676 }
2677#endif
a0d0e21e
LW		 2678 break;
2679 }
13826f2c
CS		 2680#ifdef BOGUS_GETNAME_RETURN
2681 /* Interactive Unix, getpeername() and getsockname()
2682 does not return valid namelen */
1e422769 2683 if (len == BOGUS_GETNAME_RETURN)
2684 len = sizeof(struct sockaddr);
13826f2c 2685#endif
1e422769 2686 SvCUR_set(sv, len);
748a9306 2687 *SvEND(sv) ='\0';
a0d0e21e
LW		 2688 PUSHs(sv);
2689 RETURN;
2690
2691nuts:
599cee73 2692 if (ckWARN(WARN_CLOSED))
bc37a18f 2693 report_evil_fh(gv, io, optype);
93189314 2694 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2695nuts2:
2696 RETPUSHUNDEF;
2697
2698#else
af51a00e 2699 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2700#endif
2701}
2702
2703/* Stat calls. */
2704
a0d0e21e
LW		 2705PP(pp_stat)
2706{
97aff369 2707 dVAR;
39644a26 2708 dSP;
2dd78f96 2709 GV *gv;
54310121 2710 I32 gimme;
a0d0e21e
LW		 2711 I32 max = 13;
2712
533c011a 2713 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2714 gv = cGVOP_gv;
8a4e5b40 2715 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2716 if (gv != PL_defgv) {
5d329e6e 2717 do_fstat_warning_check:
5d3e98de 2718 if (ckWARN(WARN_IO))
9014280d 2719 Perl_warner(aTHX_ packWARN(WARN_IO),
5d3e98de
RGS		 2720 "lstat() on filehandle %s", GvENAME(gv));
2721 } else if (PL_laststype != OP_LSTAT)
8a4e5b40 2722 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2723 }
2724
748a9306 2725 do_fstat:
2dd78f96 2726 if (gv != PL_defgv) {
3280af22 2727 PL_laststype = OP_STAT;
2dd78f96 2728 PL_statgv = gv;
c69006e4 2729 sv_setpvn(PL_statname, "", 0);
2dd78f96
JH		 2730 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2731 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
a0d0e21e 2732 }
9ddeeac9 2733 if (PL_laststatval < 0) {
2dd78f96
JH		 2734 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2735 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2736 max = 0;
9ddeeac9 2737 }
a0d0e21e
LW		 2738 }
2739 else {
7452cf6a 2740 SV* const sv = POPs;
748a9306 2741 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2742 gv = (GV*)sv;
748a9306
LW		 2743 goto do_fstat;
2744 }
2745 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 2746 gv = (GV*)SvRV(sv);
5d329e6e
NC		 2747 if (PL_op->op_type == OP_LSTAT)
2748 goto do_fstat_warning_check;
748a9306
LW		 2749 goto do_fstat;
2750 }
0510663f 2751 sv_setpv(PL_statname, SvPV_nolen_const(sv));
a0714e2c 2752 PL_statgv = NULL;
533c011a
NIS		 2753 PL_laststype = PL_op->op_type;
2754 if (PL_op->op_type == OP_LSTAT)
0510663f 2755 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2756 else
0510663f 2757 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2758 if (PL_laststatval < 0) {
0510663f 2759 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
9014280d 2760 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW		 2761 max = 0;
2762 }
2763 }
2764
54310121 2765 gimme = GIMME_V;
2766 if (gimme != G_ARRAY) {
2767 if (gimme != G_VOID)
2768 XPUSHs(boolSV(max));
2769 RETURN;
a0d0e21e
LW		 2770 }
2771 if (max) {
36477c24 2772 EXTEND(SP, max);
2773 EXTEND_MORTAL(max);
1ff81528
PL		 2774 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2775 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2776 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2777 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2778#if Uid_t_size > IVSIZE
2779 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2780#else
23dcd6c8 2781# if Uid_t_sign <= 0
1ff81528 2782 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2783# else
2784 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2785# endif
146174a9 2786#endif
301e8125 2787#if Gid_t_size > IVSIZE
146174a9
CB		 2788 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2789#else
23dcd6c8 2790# if Gid_t_sign <= 0
1ff81528 2791 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2792# else
2793 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2794# endif
146174a9 2795#endif
cbdc8872 2796#ifdef USE_STAT_RDEV
1ff81528 2797 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2798#else
396482e1 2799 PUSHs(sv_2mortal(newSVpvs("")));
cbdc8872 2800#endif
146174a9 2801#if Off_t_size > IVSIZE
4a9d6100 2802 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
146174a9 2803#else
1ff81528 2804 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2805#endif
cbdc8872 2806#ifdef BIG_TIME
172ae379
JH		 2807 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2808 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2809 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2810#else
1ff81528
PL		 2811 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2812 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2813 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
cbdc8872 2814#endif
a0d0e21e 2815#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2816 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2817 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2818#else
396482e1
GA		 2819 PUSHs(sv_2mortal(newSVpvs("")));
2820 PUSHs(sv_2mortal(newSVpvs("")));
a0d0e21e
LW		 2821#endif
2822 }
2823 RETURN;
2824}
2825
fbb0b3b3
RGS		 2826/* This macro is used by the stacked filetest operators :
2827 * if the previous filetest failed, short-circuit and pass its value.
2828 * Else, discard it from the stack and continue. --rgs
2829 */
2830#define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2831 if (TOPs == &PL_sv_no || TOPs == &PL_sv_undef) { RETURN; } \
2832 else { (void)POPs; PUTBACK; } \
2833 }
2834
a0d0e21e
LW		 2835PP(pp_ftrread)
2836{
97aff369 2837 dVAR;
9cad6237 2838 I32 result;
af9e49b4
NC		 2839 /* Not const, because things tweak this below. Not bool, because there's
2840 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2841#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2842 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2843 /* Giving some sort of initial value silences compilers. */
2844# ifdef R_OK
2845 int access_mode = R_OK;
2846# else
2847 int access_mode = 0;
2848# endif
5ff3f7a4 2849#else
af9e49b4
NC		 2850 /* access_mode is never used, but leaving use_access in makes the
2851 conditional compiling below much clearer. */
2852 I32 use_access = 0;
5ff3f7a4 2853#endif
af9e49b4 2854 int stat_mode = S_IRUSR;
a0d0e21e 2855
af9e49b4 2856 bool effective = FALSE;
2a3ff820 2857 dSP;
af9e49b4 2858
fbb0b3b3 2859 STACKED_FTEST_CHECK;
af9e49b4
NC		 2860
2861 switch (PL_op->op_type) {
2862 case OP_FTRREAD:
2863#if !(defined(HAS_ACCESS) && defined(R_OK))
2864 use_access = 0;
2865#endif
2866 break;
2867
2868 case OP_FTRWRITE:
5ff3f7a4 2869#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 2870 access_mode = W_OK;
5ff3f7a4 2871#else
af9e49b4 2872 use_access = 0;
5ff3f7a4 2873#endif
af9e49b4
NC		 2874 stat_mode = S_IWUSR;
2875 break;
a0d0e21e 2876
af9e49b4 2877 case OP_FTREXEC:
5ff3f7a4 2878#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 2879 access_mode = X_OK;
5ff3f7a4 2880#else
af9e49b4 2881 use_access = 0;
5ff3f7a4 2882#endif
af9e49b4
NC		 2883 stat_mode = S_IXUSR;
2884 break;
a0d0e21e 2885
af9e49b4 2886 case OP_FTEWRITE:
faee0e31 2887#ifdef PERL_EFF_ACCESS
af9e49b4 2888 access_mode = W_OK;
5ff3f7a4 2889#endif
af9e49b4
NC		 2890 stat_mode = S_IWUSR;
2891 /* Fall through */
a0d0e21e 2892
af9e49b4
NC		 2893 case OP_FTEREAD:
2894#ifndef PERL_EFF_ACCESS
2895 use_access = 0;
2896#endif
2897 effective = TRUE;
2898 break;
2899
2900
2901 case OP_FTEEXEC:
faee0e31 2902#ifdef PERL_EFF_ACCESS
af9e49b4 2903 access_mode = W_OK;
5ff3f7a4 2904#else
af9e49b4 2905 use_access = 0;
5ff3f7a4 2906#endif
af9e49b4
NC		 2907 stat_mode = S_IXUSR;
2908 effective = TRUE;
2909 break;
2910 }
a0d0e21e 2911
af9e49b4
NC		 2912 if (use_access) {
2913#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2914 const char *const name = POPpx;
2915 if (effective) {
2916# ifdef PERL_EFF_ACCESS
2917 result = PERL_EFF_ACCESS(name, access_mode);
2918# else
2919 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
2920 OP_NAME(PL_op));
2921# endif
2922 }
2923 else {
2924# ifdef HAS_ACCESS
2925 result = access(name, access_mode);
2926# else
2927 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
2928# endif
2929 }
5ff3f7a4
GS		 2930 if (result == 0)
2931 RETPUSHYES;
2932 if (result < 0)
2933 RETPUSHUNDEF;
2934 RETPUSHNO;
af9e49b4 2935#endif
22865c03 2936 }
af9e49b4 2937
cea2e8a9 2938 result = my_stat();
22865c03 2939 SPAGAIN;
a0d0e21e
LW		 2940 if (result < 0)
2941 RETPUSHUNDEF;
af9e49b4 2942 if (cando(stat_mode, effective, &PL_statcache))
a0d0e21e
LW		 2943 RETPUSHYES;
2944 RETPUSHNO;
2945}
2946
2947PP(pp_ftis)
2948{
97aff369 2949 dVAR;
fbb0b3b3 2950 I32 result;
d7f0a2f4 2951 const int op_type = PL_op->op_type;
2a3ff820 2952 dSP;
fbb0b3b3
RGS		 2953 STACKED_FTEST_CHECK;
2954 result = my_stat();
2955 SPAGAIN;
a0d0e21e
LW		 2956 if (result < 0)
2957 RETPUSHUNDEF;
d7f0a2f4
NC		 2958 if (op_type == OP_FTIS)
2959 RETPUSHYES;
957b0e1d 2960 {
d7f0a2f4
NC		 2961 /* You can't dTARGET inside OP_FTIS, because you'll get
2962 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 2963 dTARGET;
d7f0a2f4 2964 switch (op_type) {
957b0e1d
NC		 2965 case OP_FTSIZE:
2966#if Off_t_size > IVSIZE
2967 PUSHn(PL_statcache.st_size);
2968#else
2969 PUSHi(PL_statcache.st_size);
2970#endif
2971 break;
2972 case OP_FTMTIME:
2973 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
2974 break;
2975 case OP_FTATIME:
2976 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
2977 break;
2978 case OP_FTCTIME:
2979 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
2980 break;
2981 }
2982 }
2983 RETURN;
a0d0e21e
LW		 2984}
2985
a0d0e21e
LW		 2986PP(pp_ftrowned)
2987{
97aff369 2988 dVAR;
fbb0b3b3 2989 I32 result;
2a3ff820 2990 dSP;
17ad201a
NC		 2991
2992 /* I believe that all these three are likely to be defined on most every
2993 system these days. */
2994#ifndef S_ISUID
2995 if(PL_op->op_type == OP_FTSUID)
2996 RETPUSHNO;
2997#endif
2998#ifndef S_ISGID
2999 if(PL_op->op_type == OP_FTSGID)
3000 RETPUSHNO;
3001#endif
3002#ifndef S_ISVTX
3003 if(PL_op->op_type == OP_FTSVTX)
3004 RETPUSHNO;
3005#endif
3006
fbb0b3b3
RGS		 3007 STACKED_FTEST_CHECK;
3008 result = my_stat();
3009 SPAGAIN;
a0d0e21e
LW		 3010 if (result < 0)
3011 RETPUSHUNDEF;
f1cb2d48
NC		 3012 switch (PL_op->op_type) {
3013 case OP_FTROWNED:
9ab9fa88 3014 if (PL_statcache.st_uid == PL_uid)
f1cb2d48
NC		 3015 RETPUSHYES;
3016 break;
3017 case OP_FTEOWNED:
3018 if (PL_statcache.st_uid == PL_euid)
3019 RETPUSHYES;
3020 break;
3021 case OP_FTZERO:
3022 if (PL_statcache.st_size == 0)
3023 RETPUSHYES;
3024 break;
3025 case OP_FTSOCK:
3026 if (S_ISSOCK(PL_statcache.st_mode))
3027 RETPUSHYES;
3028 break;
3029 case OP_FTCHR:
3030 if (S_ISCHR(PL_statcache.st_mode))
3031 RETPUSHYES;
3032 break;
3033 case OP_FTBLK:
3034 if (S_ISBLK(PL_statcache.st_mode))
3035 RETPUSHYES;
3036 break;
3037 case OP_FTFILE:
3038 if (S_ISREG(PL_statcache.st_mode))
3039 RETPUSHYES;
3040 break;
3041 case OP_FTDIR:
3042 if (S_ISDIR(PL_statcache.st_mode))
3043 RETPUSHYES;
3044 break;
3045 case OP_FTPIPE:
3046 if (S_ISFIFO(PL_statcache.st_mode))
3047 RETPUSHYES;
3048 break;
a0d0e21e 3049#ifdef S_ISUID
17ad201a
NC		 3050 case OP_FTSUID:
3051 if (PL_statcache.st_mode & S_ISUID)
3052 RETPUSHYES;
3053 break;
a0d0e21e 3054#endif
a0d0e21e 3055#ifdef S_ISGID
17ad201a
NC		 3056 case OP_FTSGID:
3057 if (PL_statcache.st_mode & S_ISGID)
3058 RETPUSHYES;
3059 break;
3060#endif
3061#ifdef S_ISVTX
3062 case OP_FTSVTX:
3063 if (PL_statcache.st_mode & S_ISVTX)
3064 RETPUSHYES;
3065 break;
a0d0e21e 3066#endif
17ad201a 3067 }
a0d0e21e
LW		 3068 RETPUSHNO;
3069}
3070
17ad201a 3071PP(pp_ftlink)
a0d0e21e 3072{
97aff369 3073 dVAR;
17ad201a 3074 I32 result = my_lstat();
39644a26 3075 dSP;
a0d0e21e
LW		 3076 if (result < 0)
3077 RETPUSHUNDEF;
17ad201a 3078 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e 3079 RETPUSHYES;
a0d0e21e
LW		 3080 RETPUSHNO;
3081}
3082
3083PP(pp_fttty)
3084{
97aff369 3085 dVAR;
39644a26 3086 dSP;
a0d0e21e
LW		 3087 int fd;
3088 GV *gv;
a0714e2c 3089 SV *tmpsv = NULL;
fb73857a 3090
fbb0b3b3
RGS		 3091 STACKED_FTEST_CHECK;
3092
533c011a 3093 if (PL_op->op_flags & OPf_REF)
146174a9 3094 gv = cGVOP_gv;
fb73857a 3095 else if (isGV(TOPs))
3096 gv = (GV*)POPs;
3097 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3098 gv = (GV*)SvRV(POPs);
a0d0e21e 3099 else
f776e3cd 3100 gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
fb73857a 3101
a0d0e21e 3102 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3103 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
7a5fd60d 3104 else if (tmpsv && SvOK(tmpsv)) {
349d4f2f 3105 const char *tmps = SvPV_nolen_const(tmpsv);
7a5fd60d
NC		 3106 if (isDIGIT(*tmps))
3107 fd = atoi(tmps);
3108 else
3109 RETPUSHUNDEF;
3110 }
a0d0e21e
LW		 3111 else
3112 RETPUSHUNDEF;
6ad3d225 3113 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3114 RETPUSHYES;
3115 RETPUSHNO;
3116}
3117
16d20bd9
AD		 3118#if defined(atarist) /* this will work with atariST. Configure will
3119 make guesses for other systems. */
3120# define FILE_base(f) ((f)->_base)
3121# define FILE_ptr(f) ((f)->_ptr)
3122# define FILE_cnt(f) ((f)->_cnt)
3123# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3124#endif
3125
3126PP(pp_fttext)
3127{
97aff369 3128 dVAR;
39644a26 3129 dSP;
a0d0e21e
LW		 3130 I32 i;
3131 I32 len;
3132 I32 odd = 0;
3133 STDCHAR tbuf[512];
3134 register STDCHAR *s;
3135 register IO *io;
5f05dabc 3136 register SV *sv;
3137 GV *gv;
146174a9 3138 PerlIO *fp;
a0d0e21e 3139
fbb0b3b3
RGS		 3140 STACKED_FTEST_CHECK;
3141
533c011a 3142 if (PL_op->op_flags & OPf_REF)
146174a9 3143 gv = cGVOP_gv;
5f05dabc 3144 else if (isGV(TOPs))
3145 gv = (GV*)POPs;
3146 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3147 gv = (GV*)SvRV(POPs);
3148 else
a0714e2c 3149 gv = NULL;
5f05dabc 3150
3151 if (gv) {
a0d0e21e 3152 EXTEND(SP, 1);
3280af22
NIS		 3153 if (gv == PL_defgv) {
3154 if (PL_statgv)
3155 io = GvIO(PL_statgv);
a0d0e21e 3156 else {
3280af22 3157 sv = PL_statname;
a0d0e21e
LW		 3158 goto really_filename;
3159 }
3160 }
3161 else {
3280af22
NIS		 3162 PL_statgv = gv;
3163 PL_laststatval = -1;
c69006e4 3164 sv_setpvn(PL_statname, "", 0);
3280af22 3165 io = GvIO(PL_statgv);
a0d0e21e
LW		 3166 }
3167 if (io && IoIFP(io)) {
5f05dabc 3168 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3169 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3170 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3171 if (PL_laststatval < 0)
5f05dabc 3172 RETPUSHUNDEF;
9cbac4c7 3173 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3174 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3175 RETPUSHNO;
3176 else
3177 RETPUSHYES;
9cbac4c7 3178 }
a20bf0c3 3179 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3180 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3181 if (i != EOF)
760ac839 3182 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3183 }
a20bf0c3 3184 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3185 RETPUSHYES;
a20bf0c3
JH		 3186 len = PerlIO_get_bufsiz(IoIFP(io));
3187 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3188 /* sfio can have large buffers - limit to 512 */
3189 if (len > 512)
3190 len = 512;
a0d0e21e
LW		 3191 }
3192 else {
2dd78f96 3193 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3194 gv = cGVOP_gv;
2dd78f96 3195 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3196 }
93189314 3197 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 3198 RETPUSHUNDEF;
3199 }
3200 }
3201 else {
3202 sv = POPs;
5f05dabc 3203 really_filename:
a0714e2c 3204 PL_statgv = NULL;
5c9aa243 3205 PL_laststype = OP_STAT;
d5263905 3206 sv_setpv(PL_statname, SvPV_nolen_const(sv));
aa07b2f6 3207 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
349d4f2f
NC		 3208 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3209 '\n'))
9014280d 3210 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
a0d0e21e
LW		 3211 RETPUSHUNDEF;
3212 }
146174a9
CB		 3213 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3214 if (PL_laststatval < 0) {
3215 (void)PerlIO_close(fp);
5f05dabc 3216 RETPUSHUNDEF;
146174a9 3217 }
bd61b366 3218 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
146174a9
CB		 3219 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3220 (void)PerlIO_close(fp);
a0d0e21e 3221 if (len <= 0) {
533c011a 3222 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3223 RETPUSHNO; /* special case NFS directories */
3224 RETPUSHYES; /* null file is anything */
3225 }
3226 s = tbuf;
3227 }
3228
3229 /* now scan s to look for textiness */
4633a7c4 3230 /* XXX ASCII dependent code */
a0d0e21e 3231
146174a9
CB		 3232#if defined(DOSISH) || defined(USEMYBINMODE)
3233 /* ignore trailing ^Z on short files */
3234 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3235 --len;
3236#endif
3237
a0d0e21e
LW		 3238 for (i = 0; i < len; i++, s++) {
3239 if (!*s) { /* null never allowed in text */
3240 odd += len;
3241 break;
3242 }
9d116dd7 3243#ifdef EBCDIC
301e8125 3244 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3245 odd++;
3246#else
146174a9
CB		 3247 else if (*s & 128) {
3248#ifdef USE_LOCALE
2de3dbcc 3249 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3250 continue;
3251#endif
3252 /* utf8 characters don't count as odd */
fd400ab9 3253 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3254 int ulen = UTF8SKIP(s);
3255 if (ulen < len - i) {
3256 int j;
3257 for (j = 1; j < ulen; j++) {
fd400ab9 3258 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3259 goto not_utf8;
3260 }
3261 --ulen; /* loop does extra increment */
3262 s += ulen;
3263 i += ulen;
3264 continue;
3265 }
3266 }
3267 not_utf8:
3268 odd++;
146174a9 3269 }
a0d0e21e
LW		 3270 else if (*s < 32 &&
3271 *s != '\n' && *s != '\r' && *s != '\b' &&
3272 *s != '\t' && *s != '\f' && *s != 27)
3273 odd++;
9d116dd7 3274#endif
a0d0e21e
LW		 3275 }
3276
533c011a 3277 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3278 RETPUSHNO;
3279 else
3280 RETPUSHYES;
3281}
3282
a0d0e21e
LW		 3283/* File calls. */
3284
3285PP(pp_chdir)
3286{
97aff369 3287 dVAR; dSP; dTARGET;
c445ea15 3288 const char *tmps = NULL;
9a957fbc 3289 GV *gv = NULL;
a0d0e21e 3290
c4aca7d0 3291 if( MAXARG == 1 ) {
9a957fbc 3292 SV * const sv = POPs;
d4ac975e
GA		 3293 if (PL_op->op_flags & OPf_SPECIAL) {
3294 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3295 }
3296 else if (SvTYPE(sv) == SVt_PVGV) {
c4aca7d0
GA		 3297 gv = (GV*)sv;
3298 }
3299 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
3300 gv = (GV*)SvRV(sv);
3301 }
3302 else {
3303 tmps = SvPVx_nolen_const(sv);
3304 }
3305 }
35ae6b54 3306
c4aca7d0 3307 if( !gv && (!tmps || !*tmps) ) {
9a957fbc
AL		 3308 HV * const table = GvHVn(PL_envgv);
3309 SV **svp;
3310
a4fc7abc
AL		 3311 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3312 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
491527d0 3313#ifdef VMS
a4fc7abc 3314 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
491527d0 3315#endif
35ae6b54
MS		 3316 )
3317 {
3318 if( MAXARG == 1 )
9014280d 3319 deprecate("chdir('') or chdir(undef) as chdir()");
8c074e2a 3320 tmps = SvPV_nolen_const(*svp);
35ae6b54 3321 }
72f496dc 3322 else {
389ec635 3323 PUSHi(0);
b7ab37f8 3324 TAINT_PROPER("chdir");
389ec635
MS		 3325 RETURN;
3326 }
8ea155d1 3327 }
8ea155d1 3328
a0d0e21e 3329 TAINT_PROPER("chdir");
c4aca7d0
GA		 3330 if (gv) {
3331#ifdef HAS_FCHDIR
9a957fbc 3332 IO* const io = GvIO(gv);
c4aca7d0
GA		 3333 if (io) {
3334 if (IoIFP(io)) {
3335 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3336 }
3337 else if (IoDIRP(io)) {
3338#ifdef HAS_DIRFD
3339 PUSHi(fchdir(dirfd(IoDIRP(io))) >= 0);
3340#else
0f1f2428 3341 DIE(aTHX_ PL_no_func, "dirfd");
c4aca7d0
GA		 3342#endif
3343 }
3344 else {
4dc171f0
PD		 3345 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3346 report_evil_fh(gv, io, PL_op->op_type);
3347 SETERRNO(EBADF, RMS_IFI);
c4aca7d0
GA		 3348 PUSHi(0);
3349 }
3350 }
3351 else {
4dc171f0
PD		 3352 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3353 report_evil_fh(gv, io, PL_op->op_type);
3354 SETERRNO(EBADF,RMS_IFI);
c4aca7d0
GA		 3355 PUSHi(0);
3356 }
3357#else
3358 DIE(aTHX_ PL_no_func, "fchdir");
3359#endif
3360 }
3361 else
b8ffc8df 3362 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3363#ifdef VMS
3364 /* Clear the DEFAULT element of ENV so we'll get the new value
3365 * in the future. */
6b88bc9c 3366 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3367#endif
a0d0e21e
LW		 3368 RETURN;
3369}
3370
3371PP(pp_chown)
3372{
97aff369 3373 dVAR; dSP; dMARK; dTARGET;
605b9385 3374 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
76ffd3b9 3375
a0d0e21e 3376 SP = MARK;
b59aed67 3377 XPUSHi(value);
a0d0e21e 3378 RETURN;
a0d0e21e
LW		 3379}
3380
3381PP(pp_chroot)
3382{
a0d0e21e 3383#ifdef HAS_CHROOT
97aff369 3384 dVAR; dSP; dTARGET;
7452cf6a 3385 char * const tmps = POPpx;
a0d0e21e
LW		 3386 TAINT_PROPER("chroot");
3387 PUSHi( chroot(tmps) >= 0 );
3388 RETURN;
3389#else
cea2e8a9 3390 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3391#endif
3392}
3393
a0d0e21e
LW		 3394PP(pp_rename)
3395{
97aff369 3396 dVAR; dSP; dTARGET;
a0d0e21e 3397 int anum;
7452cf6a
AL		 3398 const char * const tmps2 = POPpconstx;
3399 const char * const tmps = SvPV_nolen_const(TOPs);
a0d0e21e
LW		 3400 TAINT_PROPER("rename");
3401#ifdef HAS_RENAME
baed7233 3402 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3403#else
6b88bc9c 3404 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
ed969818
W		 3405 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3406 anum = 1;
3407 else {
3654eb6c 3408 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
ed969818
W		 3409 (void)UNLINK(tmps2);
3410 if (!(anum = link(tmps, tmps2)))
3411 anum = UNLINK(tmps);
3412 }
a0d0e21e
LW		 3413 }
3414#endif
3415 SETi( anum >= 0 );
3416 RETURN;
3417}
3418
ce6987d0 3419#if defined(HAS_LINK) || defined(HAS_SYMLINK)
a0d0e21e
LW		 3420PP(pp_link)
3421{
97aff369 3422 dVAR; dSP; dTARGET;
ce6987d0
NC		 3423 const int op_type = PL_op->op_type;
3424 int result;
a0d0e21e 3425
ce6987d0
NC		 3426# ifndef HAS_LINK
3427 if (op_type == OP_LINK)
3428 DIE(aTHX_ PL_no_func, "link");
3429# endif
3430# ifndef HAS_SYMLINK
3431 if (op_type == OP_SYMLINK)
3432 DIE(aTHX_ PL_no_func, "symlink");
3433# endif
3434
3435 {
7452cf6a
AL		 3436 const char * const tmps2 = POPpconstx;
3437 const char * const tmps = SvPV_nolen_const(TOPs);
ce6987d0
NC		 3438 TAINT_PROPER(PL_op_desc[op_type]);
3439 result =
3440# if defined(HAS_LINK)
3441# if defined(HAS_SYMLINK)
3442 /* Both present - need to choose which. */
3443 (op_type == OP_LINK) ?
3444 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3445# else
4a8ebb7f
SH		 3446 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3447 PerlLIO_link(tmps, tmps2);
ce6987d0
NC		 3448# endif
3449# else
3450# if defined(HAS_SYMLINK)
4a8ebb7f
SH		 3451 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3452 symlink(tmps, tmps2);
ce6987d0
NC		 3453# endif
3454# endif
3455 }
3456
3457 SETi( result >= 0 );
a0d0e21e