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Potential (?) memory leak in Storable.xs (Coverity)
[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
cb50131a 456 Perl_warn(aTHX_ "%"SVf, 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
cb50131a 520 DIE(aTHX_ "%"SVf, 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
NC		 838 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
839 methname, *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
1280 cv = GvFORM(fgv);
a0d0e21e
LW		 1281 if (!cv) {
1282 if (fgv) {
1df70142 1283 SV * const tmpsv = sv_newmortal();
e62f0680 1284 const char *name;
bd61b366 1285 gv_efullname4(tmpsv, fgv, NULL, FALSE);
e62f0680 1286 name = SvPV_nolen_const(tmpsv);
1df70142
AL		 1287 if (name && *name)
1288 DIE(aTHX_ "Undefined format \"%s\" called", name);
a0d0e21e 1289 }
cea2e8a9 1290 DIE(aTHX_ "Not a format reference");
a0d0e21e 1291 }
44a8e56a 1292 if (CvCLONE(cv))
1293 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1294
44a8e56a 1295 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1296 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1297}
1298
1299PP(pp_leavewrite)
1300{
27da23d5 1301 dVAR; dSP;
1b6737cc
AL		 1302 GV * const gv = cxstack[cxstack_ix].blk_sub.gv;
1303 register IO * const io = GvIOp(gv);
1304 PerlIO * const ofp = IoOFP(io);
760ac839 1305 PerlIO *fp;
8772537c
AL		 1306 SV **newsp;
1307 I32 gimme;
c09156bb 1308 register PERL_CONTEXT *cx;
a0d0e21e 1309
760ac839 1310 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1311 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
7ef822cd
JH		 1312 if (!io || !ofp)
1313 goto forget_top;
3280af22
NIS		 1314 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1315 PL_formtarget != PL_toptarget)
a0d0e21e 1316 {
4633a7c4
LW		 1317 GV *fgv;
1318 CV *cv;
a0d0e21e
LW		 1319 if (!IoTOP_GV(io)) {
1320 GV *topgv;
a0d0e21e
LW		 1321
1322 if (!IoTOP_NAME(io)) {
1b6737cc 1323 SV *topname;
a0d0e21e
LW		 1324 if (!IoFMT_NAME(io))
1325 IoFMT_NAME(io) = savepv(GvNAME(gv));
0bd0581c 1326 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
f776e3cd 1327 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1328 if ((topgv && GvFORM(topgv)) ||
fafc274c 1329 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1330 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1331 else
89529cee 1332 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1333 }
f776e3cd 1334 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1335 if (!topgv || !GvFORM(topgv)) {
b929a54b 1336 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1337 goto forget_top;
1338 }
1339 IoTOP_GV(io) = topgv;
1340 }
748a9306
LW		 1341 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1342 I32 lines = IoLINES_LEFT(io);
504618e9 1343 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD		 1344 if (lines <= 0) /* Yow, header didn't even fit!!! */
1345 goto forget_top;
748a9306
LW		 1346 while (lines-- > 0) {
1347 s = strchr(s, '\n');
1348 if (!s)
1349 break;
1350 s++;
1351 }
1352 if (s) {
f54cb97a 1353 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1354 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1355 do_print(PL_formtarget, ofp);
1356 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1357 sv_chop(PL_formtarget, s);
1358 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1359 }
1360 }
a0d0e21e 1361 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1362 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1363 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1364 IoPAGE(io)++;
3280af22 1365 PL_formtarget = PL_toptarget;
748a9306 1366 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1367 fgv = IoTOP_GV(io);
1368 if (!fgv)
cea2e8a9 1369 DIE(aTHX_ "bad top format reference");
4633a7c4 1370 cv = GvFORM(fgv);
1df70142
AL		 1371 if (!cv) {
1372 SV * const sv = sv_newmortal();
b464bac0 1373 const char *name;
bd61b366 1374 gv_efullname4(sv, fgv, NULL, FALSE);
e62f0680 1375 name = SvPV_nolen_const(sv);
2dd78f96 1376 if (name && *name)
0e528f24
JH		 1377 DIE(aTHX_ "Undefined top format \"%s\" called", name);
1378 else
1379 DIE(aTHX_ "Undefined top format called");
4633a7c4 1380 }
0e528f24 1381 if (cv && CvCLONE(cv))
44a8e56a 1382 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
0e528f24 1383 return doform(cv, gv, PL_op);
a0d0e21e
LW		 1384 }
1385
1386 forget_top:
3280af22 1387 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1388 POPFORMAT(cx);
1389 LEAVE;
1390
1391 fp = IoOFP(io);
1392 if (!fp) {
599cee73 1393 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1394 if (IoIFP(io))
1395 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1396 else if (ckWARN(WARN_CLOSED))
bc37a18f 1397 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1398 }
3280af22 1399 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1400 }
1401 else {
3280af22 1402 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1403 if (ckWARN(WARN_IO))
9014280d 1404 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1405 }
d75029d0 1406 if (!do_print(PL_formtarget, fp))
3280af22 1407 PUSHs(&PL_sv_no);
a0d0e21e 1408 else {
3280af22
NIS		 1409 FmLINES(PL_formtarget) = 0;
1410 SvCUR_set(PL_formtarget, 0);
1411 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1412 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1413 (void)PerlIO_flush(fp);
3280af22 1414 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1415 }
1416 }
9cbac4c7 1417 /* bad_ofp: */
3280af22 1418 PL_formtarget = PL_bodytarget;
a0d0e21e 1419 PUTBACK;
29033a8a
SH		 1420 PERL_UNUSED_VAR(newsp);
1421 PERL_UNUSED_VAR(gimme);
f39bc417 1422 return cx->blk_sub.retop;
a0d0e21e
LW		 1423}
1424
1425PP(pp_prtf)
1426{
27da23d5 1427 dVAR; dSP; dMARK; dORIGMARK;
a0d0e21e 1428 IO *io;
760ac839 1429 PerlIO *fp;
26db47c4 1430 SV *sv;
46fc3d4c 1431 MAGIC *mg;
a0d0e21e 1432
c4420975 1433 GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv;
46fc3d4c 1434
5b468f54
AMS		 1435 if (gv && (io = GvIO(gv))
1436 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1437 {
46fc3d4c 1438 if (MARK == ORIGMARK) {
4352c267 1439 MEXTEND(SP, 1);
46fc3d4c 1440 ++MARK;
1441 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1442 ++SP;
1443 }
1444 PUSHMARK(MARK - 1);
5b468f54 1445 *MARK = SvTIED_obj((SV*)io, mg);
46fc3d4c 1446 PUTBACK;
1447 ENTER;
864dbfa3 1448 call_method("PRINTF", G_SCALAR);
46fc3d4c 1449 LEAVE;
1450 SPAGAIN;
1451 MARK = ORIGMARK + 1;
1452 *MARK = *SP;
1453 SP = MARK;
1454 RETURN;
1455 }
1456
561b68a9 1457 sv = newSV(0);
a0d0e21e 1458 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1459 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1460 report_evil_fh(gv, io, PL_op->op_type);
93189314 1461 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1462 goto just_say_no;
1463 }
1464 else if (!(fp = IoOFP(io))) {
599cee73 1465 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1466 if (IoIFP(io))
1467 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1468 else if (ckWARN(WARN_CLOSED))
bc37a18f 1469 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1470 }
93189314 1471 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1472 goto just_say_no;
1473 }
1474 else {
1475 do_sprintf(sv, SP - MARK, MARK + 1);
1476 if (!do_print(sv, fp))
1477 goto just_say_no;
1478
1479 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1480 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1481 goto just_say_no;
1482 }
1483 SvREFCNT_dec(sv);
1484 SP = ORIGMARK;
3280af22 1485 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1486 RETURN;
1487
1488 just_say_no:
1489 SvREFCNT_dec(sv);
1490 SP = ORIGMARK;
3280af22 1491 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1492 RETURN;
1493}
1494
c07a80fd 1495PP(pp_sysopen)
1496{
97aff369 1497 dVAR;
39644a26 1498 dSP;
1df70142
AL		 1499 const int perm = (MAXARG > 3) ? POPi : 0666;
1500 const int mode = POPi;
1b6737cc
AL		 1501 SV * const sv = POPs;
1502 GV * const gv = (GV *)POPs;
1503 STRLEN len;
c07a80fd 1504
4592e6ca 1505 /* Need TIEHANDLE method ? */
1b6737cc 1506 const char * const tmps = SvPV_const(sv, len);
e62f0680 1507 /* FIXME? do_open should do const */
4608196e 1508 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1509 IoLINES(GvIOp(gv)) = 0;
3280af22 1510 PUSHs(&PL_sv_yes);
c07a80fd 1511 }
1512 else {
3280af22 1513 PUSHs(&PL_sv_undef);
c07a80fd 1514 }
1515 RETURN;
1516}
1517
a0d0e21e
LW		 1518PP(pp_sysread)
1519{
27da23d5 1520 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1521 int offset;
a0d0e21e
LW		 1522 IO *io;
1523 char *buffer;
5b54f415 1524 SSize_t length;
eb5c063a 1525 SSize_t count;
1e422769 1526 Sock_size_t bufsize;
748a9306 1527 SV *bufsv;
a0d0e21e 1528 STRLEN blen;
eb5c063a 1529 int fp_utf8;
1dd30107
NC		 1530 int buffer_utf8;
1531 SV *read_target;
eb5c063a
NIS		 1532 Size_t got = 0;
1533 Size_t wanted;
1d636c13 1534 bool charstart = FALSE;
87330c3c
JH		 1535 STRLEN charskip = 0;
1536 STRLEN skip = 0;
a0d0e21e 1537
1b6737cc 1538 GV * const gv = (GV*)*++MARK;
5b468f54 1539 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1540 && gv && (io = GvIO(gv)) )
137443ea 1541 {
1b6737cc
AL		 1542 const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1543 if (mg) {
1544 SV *sv;
1545 PUSHMARK(MARK-1);
1546 *MARK = SvTIED_obj((SV*)io, mg);
1547 ENTER;
1548 call_method("READ", G_SCALAR);
1549 LEAVE;
1550 SPAGAIN;
1551 sv = POPs;
1552 SP = ORIGMARK;
1553 PUSHs(sv);
1554 RETURN;
1555 }
2ae324a7 1556 }
1557
a0d0e21e
LW		 1558 if (!gv)
1559 goto say_undef;
748a9306 1560 bufsv = *++MARK;
ff68c719 1561 if (! SvOK(bufsv))
1562 sv_setpvn(bufsv, "", 0);
a0d0e21e 1563 length = SvIVx(*++MARK);
748a9306 1564 SETERRNO(0,0);
a0d0e21e
LW		 1565 if (MARK < SP)
1566 offset = SvIVx(*++MARK);
1567 else
1568 offset = 0;
1569 io = GvIO(gv);
b5fe5ca2
SR		 1570 if (!io || !IoIFP(io)) {
1571 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1572 report_evil_fh(gv, io, PL_op->op_type);
1573 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1574 goto say_undef;
b5fe5ca2 1575 }
0064a8a9 1576 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1577 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1578 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1579 SvUTF8_on(bufsv);
9b9d7ce8 1580 buffer_utf8 = 0;
7d59b7e4
NIS		 1581 }
1582 else {
1583 buffer = SvPV_force(bufsv, blen);
1dd30107 1584 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4
NIS		 1585 }
1586 if (length < 0)
1587 DIE(aTHX_ "Negative length");
eb5c063a 1588 wanted = length;
7d59b7e4 1589
d0965105
JH		 1590 charstart = TRUE;
1591 charskip = 0;
87330c3c 1592 skip = 0;
d0965105 1593
a0d0e21e 1594#ifdef HAS_SOCKET
533c011a 1595 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1596 char namebuf[MAXPATHLEN];
17a8c7ba 1597#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
490ab354
JH		 1598 bufsize = sizeof (struct sockaddr_in);
1599#else
46fc3d4c 1600 bufsize = sizeof namebuf;
490ab354 1601#endif
abf95952
IZ		 1602#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1603 if (bufsize >= 256)
1604 bufsize = 255;
1605#endif
eb160463 1606 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1607 /* 'offset' means 'flags' here */
eb5c063a 1608 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
46fc3d4c 1609 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1610 if (count < 0)
a0d0e21e 1611 RETPUSHUNDEF;
4107cc59
OF		 1612#ifdef EPOC
1613 /* Bogus return without padding */
1614 bufsize = sizeof (struct sockaddr_in);
1615#endif
eb5c063a 1616 SvCUR_set(bufsv, count);
748a9306
LW		 1617 *SvEND(bufsv) = '\0';
1618 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1619 if (fp_utf8)
1620 SvUTF8_on(bufsv);
748a9306 1621 SvSETMAGIC(bufsv);
aac0dd9a 1622 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1623 if (!(IoFLAGS(io) & IOf_UNTAINT))
1624 SvTAINTED_on(bufsv);
a0d0e21e 1625 SP = ORIGMARK;
46fc3d4c 1626 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1627 PUSHs(TARG);
1628 RETURN;
1629 }
1630#else
911d147d 1631 if (PL_op->op_type == OP_RECV)
cea2e8a9 1632 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1633#endif
eb5c063a
NIS		 1634 if (DO_UTF8(bufsv)) {
1635 /* offset adjust in characters not bytes */
1636 blen = sv_len_utf8(bufsv);
7d59b7e4 1637 }
bbce6d69 1638 if (offset < 0) {
eb160463 1639 if (-offset > (int)blen)
cea2e8a9 1640 DIE(aTHX_ "Offset outside string");
bbce6d69 1641 offset += blen;
1642 }
eb5c063a
NIS		 1643 if (DO_UTF8(bufsv)) {
1644 /* convert offset-as-chars to offset-as-bytes */
6960c29a
CH		 1645 if (offset >= (int)blen)
1646 offset += SvCUR(bufsv) - blen;
1647 else
1648 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS		 1649 }
1650 more_bytes:
cd52b7b2 1651 bufsize = SvCUR(bufsv);
1dd30107
NC		 1652 /* Allocating length + offset + 1 isn't perfect in the case of reading
1653 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1654 unduly.
1655 (should be 2 * length + offset + 1, or possibly something longer if
1656 PL_encoding is true) */
eb160463 1657 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
27da23d5 1658 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
cd52b7b2 1659 Zero(buffer+bufsize, offset-bufsize, char);
1660 }
eb5c063a 1661 buffer = buffer + offset;
1dd30107
NC		 1662 if (!buffer_utf8) {
1663 read_target = bufsv;
1664 } else {
1665 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1666 concatenate it to the current buffer. */
1667
1668 /* Truncate the existing buffer to the start of where we will be
1669 reading to: */
1670 SvCUR_set(bufsv, offset);
1671
1672 read_target = sv_newmortal();
862a34c6 1673 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1674 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1675 }
eb5c063a 1676
533c011a 1677 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1678#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1679 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1680 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1681 buffer, length, 0);
a7092146
GS		 1682 }
1683 else
1684#endif
1685 {
eb5c063a
NIS		 1686 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1687 buffer, length);
a7092146 1688 }
a0d0e21e
LW		 1689 }
1690 else
1691#ifdef HAS_SOCKET__bad_code_maybe
50952442 1692 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1693 char namebuf[MAXPATHLEN];
490ab354
JH		 1694#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1695 bufsize = sizeof (struct sockaddr_in);
1696#else
46fc3d4c 1697 bufsize = sizeof namebuf;
490ab354 1698#endif
eb5c063a 1699 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1700 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1701 }
1702 else
1703#endif
3b02c43c 1704 {
eb5c063a
NIS		 1705 count = PerlIO_read(IoIFP(io), buffer, length);
1706 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1707 if (count == 0 && PerlIO_error(IoIFP(io)))
1708 count = -1;
3b02c43c 1709 }
eb5c063a 1710 if (count < 0) {
a00b5bd3 1711 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
6e6ef6b2 1712 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
a0d0e21e 1713 goto say_undef;
af8c498a 1714 }
aa07b2f6 1715 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1716 *SvEND(read_target) = '\0';
1717 (void)SvPOK_only(read_target);
0064a8a9 1718 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1719 /* Look at utf8 we got back and count the characters */
1df70142 1720 const char *bend = buffer + count;
eb5c063a 1721 while (buffer < bend) {
d0965105
JH		 1722 if (charstart) {
1723 skip = UTF8SKIP(buffer);
1724 charskip = 0;
1725 }
1726 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1727 /* partial character - try for rest of it */
1728 length = skip - (bend-buffer);
aa07b2f6 1729 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1730 charstart = FALSE;
1731 charskip += count;
eb5c063a
NIS		 1732 goto more_bytes;
1733 }
1734 else {
1735 got++;
1736 buffer += skip;
d0965105
JH		 1737 charstart = TRUE;
1738 charskip = 0;
eb5c063a
NIS		 1739 }
1740 }
1741 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1742 provided amount read (count) was what was requested (length)
1743 */
1744 if (got < wanted && count == length) {
d0965105 1745 length = wanted - got;
aa07b2f6 1746 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1747 goto more_bytes;
1748 }
1749 /* return value is character count */
1750 count = got;
1751 SvUTF8_on(bufsv);
1752 }
1dd30107
NC		 1753 else if (buffer_utf8) {
1754 /* Let svcatsv upgrade the bytes we read in to utf8.
1755 The buffer is a mortal so will be freed soon. */
1756 sv_catsv_nomg(bufsv, read_target);
1757 }
748a9306 1758 SvSETMAGIC(bufsv);
aac0dd9a 1759 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1760 if (!(IoFLAGS(io) & IOf_UNTAINT))
1761 SvTAINTED_on(bufsv);
a0d0e21e 1762 SP = ORIGMARK;
eb5c063a 1763 PUSHi(count);
a0d0e21e
LW		 1764 RETURN;
1765
1766 say_undef:
1767 SP = ORIGMARK;
1768 RETPUSHUNDEF;
1769}
1770
a0d0e21e
LW		 1771PP(pp_send)
1772{
27da23d5 1773 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1774 IO *io;
748a9306 1775 SV *bufsv;
83003860 1776 const char *buffer;
64a1bc8e 1777 Size_t length = 0;
8c99d73e 1778 SSize_t retval;
a0d0e21e 1779 STRLEN blen;
1d603a67 1780 MAGIC *mg;
64a1bc8e
NC		 1781 const int op_type = PL_op->op_type;
1782
7452cf6a 1783 GV *const gv = (GV*)*++MARK;
14befaf4 1784 if (PL_op->op_type == OP_SYSWRITE
5b468f54
AMS		 1785 && gv && (io = GvIO(gv))
1786 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
14befaf4 1787 {
1d603a67 1788 SV *sv;
64a1bc8e
NC		 1789
1790 if (MARK == SP - 1) {
1791 EXTEND(SP, 1000);
1792 sv = sv_2mortal(newSViv(sv_len(*SP)));
1793 PUSHs(sv);
1794 PUTBACK;
1795 }
1d603a67 1796
64a1bc8e
NC		 1797 PUSHMARK(ORIGMARK);
1798 *(ORIGMARK+1) = SvTIED_obj((SV*)io, mg);
1d603a67 1799 ENTER;
864dbfa3 1800 call_method("WRITE", G_SCALAR);
1d603a67
GB		 1801 LEAVE;
1802 SPAGAIN;
1803 sv = POPs;
1804 SP = ORIGMARK;
1805 PUSHs(sv);
1806 RETURN;
1807 }
a0d0e21e
LW		 1808 if (!gv)
1809 goto say_undef;
64a1bc8e 1810
748a9306 1811 bufsv = *++MARK;
64a1bc8e
NC		 1812
1813 if (op_type == OP_SYSWRITE) {
1814 if (MARK >= SP) {
1815 length = (Size_t) sv_len(bufsv);
1816 } else {
8c99d73e 1817#if Size_t_size > IVSIZE
64a1bc8e 1818 length = (Size_t)SvNVx(*++MARK);
146174a9 1819#else
64a1bc8e 1820 length = (Size_t)SvIVx(*++MARK);
146174a9 1821#endif
64a1bc8e
NC		 1822 if ((SSize_t)length < 0)
1823 DIE(aTHX_ "Negative length");
1824 }
1825 }
748a9306 1826 SETERRNO(0,0);
a0d0e21e
LW		 1827 io = GvIO(gv);
1828 if (!io || !IoIFP(io)) {
8c99d73e 1829 retval = -1;
bc37a18f
RG		 1830 if (ckWARN(WARN_CLOSED))
1831 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 1832 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1833 goto say_undef;
1834 }
1835
1836 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7
NC		 1837 if (!SvUTF8(bufsv)) {
1838 bufsv = sv_2mortal(newSVsv(bufsv));
1839 buffer = sv_2pvutf8(bufsv, &blen);
1840 } else
83003860 1841 buffer = SvPV_const(bufsv, blen);
a0d0e21e 1842 }
7d59b7e4 1843 else {
4de5f5ca
JH		 1844 if (DO_UTF8(bufsv)) {
1845 /* Not modifying source SV, so making a temporary copy. */
1846 bufsv = sv_2mortal(newSVsv(bufsv));
1847 sv_utf8_downgrade(bufsv, FALSE);
1848 }
83003860 1849 buffer = SvPV_const(bufsv, blen);
7d59b7e4
NIS		 1850 }
1851
64a1bc8e 1852 if (op_type == OP_SYSWRITE) {
7d59b7e4
NIS		 1853 IV offset;
1854 if (DO_UTF8(bufsv)) {
1855 /* length and offset are in chars */
1856 blen = sv_len_utf8(bufsv);
1857 }
bbce6d69 1858 if (MARK < SP) {
a0d0e21e 1859 offset = SvIVx(*++MARK);
bbce6d69 1860 if (offset < 0) {
eb160463 1861 if (-offset > (IV)blen)
cea2e8a9 1862 DIE(aTHX_ "Offset outside string");
bbce6d69 1863 offset += blen;
eb160463 1864 } else if (offset >= (IV)blen && blen > 0)
cea2e8a9 1865 DIE(aTHX_ "Offset outside string");
bbce6d69 1866 } else
a0d0e21e
LW		 1867 offset = 0;
1868 if (length > blen - offset)
1869 length = blen - offset;
7d59b7e4 1870 if (DO_UTF8(bufsv)) {
83003860 1871 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
7d59b7e4
NIS		 1872 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1873 }
1874 else {
1875 buffer = buffer+offset;
1876 }
a7092146 1877#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1878 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1879 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1880 buffer, length, 0);
a7092146
GS		 1881 }
1882 else
1883#endif
1884 {
94e4c244 1885 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1886 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1887 buffer, length);
a7092146 1888 }
a0d0e21e
LW		 1889 }
1890#ifdef HAS_SOCKET
64a1bc8e
NC		 1891 else {
1892 const int flags = SvIVx(*++MARK);
1893 if (SP > MARK) {
1894 STRLEN mlen;
1895 char * const sockbuf = SvPVx(*++MARK, mlen);
1896 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1897 flags, (struct sockaddr *)sockbuf, mlen);
1898 }
1899 else {
1900 retval
1901 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1902 }
a0d0e21e 1903 }
a0d0e21e
LW		 1904#else
1905 else
cea2e8a9 1906 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1907#endif
8c99d73e 1908 if (retval < 0)
a0d0e21e
LW		 1909 goto say_undef;
1910 SP = ORIGMARK;
f36eea10
JH		 1911 if (DO_UTF8(bufsv))
1912 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
8c99d73e
GS		 1913#if Size_t_size > IVSIZE
1914 PUSHn(retval);
1915#else
1916 PUSHi(retval);
1917#endif
a0d0e21e
LW		 1918 RETURN;
1919
1920 say_undef:
1921 SP = ORIGMARK;
1922 RETPUSHUNDEF;
1923}
1924
a0d0e21e
LW		 1925PP(pp_eof)
1926{
27da23d5 1927 dVAR; dSP;
a0d0e21e
LW		 1928 GV *gv;
1929
32da55ab 1930 if (MAXARG == 0) {
146174a9
CB		 1931 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1932 IO *io;
ed2c6b9b 1933 gv = PL_last_in_gv = GvEGV(PL_argvgv);
146174a9
CB		 1934 io = GvIO(gv);
1935 if (io && !IoIFP(io)) {
1936 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1937 IoLINES(io) = 0;
1938 IoFLAGS(io) &= ~IOf_START;
4608196e 1939 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
146174a9
CB		 1940 sv_setpvn(GvSV(gv), "-", 1);
1941 SvSETMAGIC(GvSV(gv));
1942 }
1943 else if (!nextargv(gv))
1944 RETPUSHYES;
1945 }
1946 }
1947 else
1948 gv = PL_last_in_gv; /* eof */
1949 }
a0d0e21e 1950 else
146174a9 1951 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 1952
6136c704
AL		 1953 if (gv) {
1954 IO * const io = GvIO(gv);
1955 MAGIC * mg;
1956 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
1957 PUSHMARK(SP);
1958 XPUSHs(SvTIED_obj((SV*)io, mg));
1959 PUTBACK;
1960 ENTER;
1961 call_method("EOF", G_SCALAR);
1962 LEAVE;
1963 SPAGAIN;
1964 RETURN;
1965 }
4592e6ca
NIS		 1966 }
1967
54310121 1968 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 1969 RETURN;
1970}
1971
1972PP(pp_tell)
1973{
27da23d5 1974 dVAR; dSP; dTARGET;
301e8125 1975 GV *gv;
5b468f54 1976 IO *io;
4592e6ca 1977 MAGIC *mg;
a0d0e21e 1978
c4420975
AL		 1979 if (MAXARG != 0)
1980 PL_last_in_gv = (GV*)POPs;
1981 gv = PL_last_in_gv;
4592e6ca 1982
5b468f54
AMS		 1983 if (gv && (io = GvIO(gv))
1984 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1985 {
4592e6ca 1986 PUSHMARK(SP);
5b468f54 1987 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1988 PUTBACK;
1989 ENTER;
864dbfa3 1990 call_method("TELL", G_SCALAR);
4592e6ca
NIS		 1991 LEAVE;
1992 SPAGAIN;
1993 RETURN;
1994 }
1995
146174a9
CB		 1996#if LSEEKSIZE > IVSIZE
1997 PUSHn( do_tell(gv) );
1998#else
a0d0e21e 1999 PUSHi( do_tell(gv) );
146174a9 2000#endif
a0d0e21e
LW		 2001 RETURN;
2002}
2003
137443ea 2004PP(pp_sysseek)
2005{
27da23d5 2006 dVAR; dSP;
5b468f54 2007 IO *io;
1df70142 2008 const int whence = POPi;
146174a9 2009#if LSEEKSIZE > IVSIZE
7452cf6a 2010 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2011#else
7452cf6a 2012 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2013#endif
4592e6ca 2014 MAGIC *mg;
a0d0e21e 2015
7452cf6a 2016 GV * const gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 2017
5b468f54
AMS		 2018 if (gv && (io = GvIO(gv))
2019 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
2020 {
4592e6ca 2021 PUSHMARK(SP);
5b468f54 2022 XPUSHs(SvTIED_obj((SV*)io, mg));
cb50131a
CB		 2023#if LSEEKSIZE > IVSIZE
2024 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
2025#else
b448e4fe 2026 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 2027#endif
b448e4fe 2028 XPUSHs(sv_2mortal(newSViv(whence)));
4592e6ca
NIS		 2029 PUTBACK;
2030 ENTER;
864dbfa3 2031 call_method("SEEK", G_SCALAR);
4592e6ca
NIS		 2032 LEAVE;
2033 SPAGAIN;
2034 RETURN;
2035 }
2036
533c011a 2037 if (PL_op->op_type == OP_SEEK)
8903cb82 2038 PUSHs(boolSV(do_seek(gv, offset, whence)));
2039 else {
0bcc34c2 2040 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2041 if (sought < 0)
146174a9
CB		 2042 PUSHs(&PL_sv_undef);
2043 else {
7452cf6a 2044 SV* const sv = sought ?
146174a9 2045#if LSEEKSIZE > IVSIZE
b448e4fe 2046 newSVnv((NV)sought)
146174a9 2047#else
b448e4fe 2048 newSViv(sought)
146174a9
CB		 2049#endif
2050 : newSVpvn(zero_but_true, ZBTLEN);
2051 PUSHs(sv_2mortal(sv));
2052 }
8903cb82 2053 }
a0d0e21e
LW		 2054 RETURN;
2055}
2056
2057PP(pp_truncate)
2058{
97aff369 2059 dVAR;
39644a26 2060 dSP;
8c99d73e
GS		 2061 /* There seems to be no consensus on the length type of truncate()
2062 * and ftruncate(), both off_t and size_t have supporters. In
2063 * general one would think that when using large files, off_t is
2064 * at least as wide as size_t, so using an off_t should be okay. */
2065 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2066 Off_t len;
a0d0e21e 2067
25342a55 2068#if Off_t_size > IVSIZE
0bcc34c2 2069 len = (Off_t)POPn;
8c99d73e 2070#else
0bcc34c2 2071 len = (Off_t)POPi;
8c99d73e
GS		 2072#endif
2073 /* Checking for length < 0 is problematic as the type might or
301e8125 2074 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2075 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2076 SETERRNO(0,0);
d05c1ba0 2077 {
d05c1ba0
JH		 2078 int result = 1;
2079 GV *tmpgv;
090bf15b
SR		 2080 IO *io;
2081
d05c1ba0 2082 if (PL_op->op_flags & OPf_SPECIAL) {
f776e3cd 2083 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
d05c1ba0 2084
090bf15b
SR		 2085 do_ftruncate_gv:
2086 if (!GvIO(tmpgv))
2087 result = 0;
d05c1ba0 2088 else {
090bf15b
SR		 2089 PerlIO *fp;
2090 io = GvIOp(tmpgv);
2091 do_ftruncate_io:
2092 TAINT_PROPER("truncate");
2093 if (!(fp = IoIFP(io))) {
2094 result = 0;
2095 }
2096 else {
2097 PerlIO_flush(fp);
cbdc8872 2098#ifdef HAS_TRUNCATE
090bf15b 2099 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2100#else
090bf15b 2101 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2102#endif
090bf15b
SR		 2103 result = 0;
2104 }
d05c1ba0 2105 }
cbdc8872 2106 }
d05c1ba0 2107 else {
7452cf6a 2108 SV * const sv = POPs;
83003860 2109 const char *name;
7a5fd60d 2110
d05c1ba0
JH		 2111 if (SvTYPE(sv) == SVt_PVGV) {
2112 tmpgv = (GV*)sv; /* *main::FRED for example */
090bf15b 2113 goto do_ftruncate_gv;
d05c1ba0
JH		 2114 }
2115 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2116 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
090bf15b
SR		 2117 goto do_ftruncate_gv;
2118 }
2119 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2120 io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
2121 goto do_ftruncate_io;
d05c1ba0 2122 }
1e422769 2123
83003860 2124 name = SvPV_nolen_const(sv);
d05c1ba0 2125 TAINT_PROPER("truncate");
cbdc8872 2126#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2127 if (truncate(name, len) < 0)
2128 result = 0;
cbdc8872 2129#else
d05c1ba0 2130 {
7452cf6a 2131 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2132
7452cf6a 2133 if (tmpfd < 0)
cbdc8872 2134 result = 0;
d05c1ba0
JH		 2135 else {
2136 if (my_chsize(tmpfd, len) < 0)
2137 result = 0;
2138 PerlLIO_close(tmpfd);
2139 }
cbdc8872 2140 }
a0d0e21e 2141#endif
d05c1ba0 2142 }
a0d0e21e 2143
d05c1ba0
JH		 2144 if (result)
2145 RETPUSHYES;
2146 if (!errno)
93189314 2147 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2148 RETPUSHUNDEF;
2149 }
a0d0e21e
LW		 2150}
2151
a0d0e21e
LW		 2152PP(pp_ioctl)
2153{
97aff369 2154 dVAR; dSP; dTARGET;
7452cf6a 2155 SV * const argsv = POPs;
1df70142 2156 const unsigned int func = POPu;
e1ec3a88 2157 const int optype = PL_op->op_type;
7452cf6a 2158 GV * const gv = (GV*)POPs;
4608196e 2159 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2160 char *s;
324aa91a 2161 IV retval;
a0d0e21e 2162
748a9306 2163 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2164 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2165 report_evil_fh(gv, io, PL_op->op_type);
93189314 2166 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2167 RETPUSHUNDEF;
2168 }
2169
748a9306 2170 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2171 STRLEN len;
324aa91a 2172 STRLEN need;
748a9306 2173 s = SvPV_force(argsv, len);
324aa91a
HF		 2174 need = IOCPARM_LEN(func);
2175 if (len < need) {
2176 s = Sv_Grow(argsv, need + 1);
2177 SvCUR_set(argsv, need);
a0d0e21e
LW		 2178 }
2179
748a9306 2180 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2181 }
2182 else {
748a9306 2183 retval = SvIV(argsv);
c529f79d 2184 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2185 }
2186
ed4b2e6b 2187 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2188
2189 if (optype == OP_IOCTL)
2190#ifdef HAS_IOCTL
76e3520e 2191 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2192#else
cea2e8a9 2193 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2194#endif
2195 else
c214f4ad
WB		 2196#ifndef HAS_FCNTL
2197 DIE(aTHX_ "fcntl is not implemented");
2198#else
55497cff 2199#if defined(OS2) && defined(__EMX__)
760ac839 2200 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2201#else
760ac839 2202 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2203#endif
6652bd42 2204#endif
a0d0e21e 2205
6652bd42 2206#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2207 if (SvPOK(argsv)) {
2208 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2209 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2210 OP_NAME(PL_op));
748a9306
LW		 2211 s[SvCUR(argsv)] = 0; /* put our null back */
2212 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2213 }
2214
2215 if (retval == -1)
2216 RETPUSHUNDEF;
2217 if (retval != 0) {
2218 PUSHi(retval);
2219 }
2220 else {
8903cb82 2221 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2222 }
4808266b 2223#endif
c214f4ad 2224 RETURN;
a0d0e21e
LW		 2225}
2226
2227PP(pp_flock)
2228{
9cad6237 2229#ifdef FLOCK
97aff369 2230 dVAR; dSP; dTARGET;
a0d0e21e 2231 I32 value;
bc37a18f 2232 IO *io = NULL;
760ac839 2233 PerlIO *fp;
7452cf6a
AL		 2234 const int argtype = POPi;
2235 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
16d20bd9 2236
bc37a18f
RG		 2237 if (gv && (io = GvIO(gv)))
2238 fp = IoIFP(io);
2239 else {
4608196e 2240 fp = NULL;
bc37a18f
RG		 2241 io = NULL;
2242 }
0bcc34c2 2243 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2244 if (fp) {
68dc0745 2245 (void)PerlIO_flush(fp);
76e3520e 2246 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2247 }
cb50131a 2248 else {
bc37a18f
RG		 2249 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2250 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2251 value = 0;
93189314 2252 SETERRNO(EBADF,RMS_IFI);
cb50131a 2253 }
a0d0e21e
LW		 2254 PUSHi(value);
2255 RETURN;
2256#else
cea2e8a9 2257 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2258#endif
2259}
2260
2261/* Sockets. */
2262
2263PP(pp_socket)
2264{
a0d0e21e 2265#ifdef HAS_SOCKET
97aff369 2266 dVAR; dSP;
7452cf6a
AL		 2267 const int protocol = POPi;
2268 const int type = POPi;
2269 const int domain = POPi;
2270 GV * const gv = (GV*)POPs;
2271 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e
LW		 2272 int fd;
2273
c289d2f7
JH		 2274 if (!gv || !io) {
2275 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2276 report_evil_fh(gv, io, PL_op->op_type);
5ee74a84 2277 if (io && IoIFP(io))
c289d2f7 2278 do_close(gv, FALSE);
93189314 2279 SETERRNO(EBADF,LIB_INVARG);
a0d0e21e
LW		 2280 RETPUSHUNDEF;
2281 }
2282
57171420
BS		 2283 if (IoIFP(io))
2284 do_close(gv, FALSE);
2285
a0d0e21e 2286 TAINT_PROPER("socket");
6ad3d225 2287 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2288 if (fd < 0)
2289 RETPUSHUNDEF;
460c8493
IZ		 2290 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2291 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2292 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2293 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2294 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2295 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2296 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2297 RETPUSHUNDEF;
2298 }
8d2a6795
GS		 2299#if defined(HAS_FCNTL) && defined(F_SETFD)
2300 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2301#endif
a0d0e21e 2302
d5ff79b3
OF		 2303#ifdef EPOC
2304 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2305#endif
2306
a0d0e21e
LW		 2307 RETPUSHYES;
2308#else
cea2e8a9 2309 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2310#endif
2311}
2312
2313PP(pp_sockpair)
2314{
c95c94b1 2315#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2316 dVAR; dSP;
7452cf6a
AL		 2317 const int protocol = POPi;
2318 const int type = POPi;
2319 const int domain = POPi;
2320 GV * const gv2 = (GV*)POPs;
2321 GV * const gv1 = (GV*)POPs;
2322 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2323 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
a0d0e21e
LW		 2324 int fd[2];
2325
c289d2f7
JH		 2326 if (!gv1 || !gv2 || !io1 || !io2) {
2327 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2328 if (!gv1 || !io1)
2329 report_evil_fh(gv1, io1, PL_op->op_type);
2330 if (!gv2 || !io2)
2331 report_evil_fh(gv1, io2, PL_op->op_type);
2332 }
5ee74a84 2333 if (io1 && IoIFP(io1))
c289d2f7 2334 do_close(gv1, FALSE);
5ee74a84 2335 if (io2 && IoIFP(io2))
c289d2f7 2336 do_close(gv2, FALSE);
a0d0e21e 2337 RETPUSHUNDEF;
c289d2f7 2338 }
a0d0e21e 2339
dc0d0a5f
JH		 2340 if (IoIFP(io1))
2341 do_close(gv1, FALSE);
2342 if (IoIFP(io2))
2343 do_close(gv2, FALSE);
57171420 2344
a0d0e21e 2345 TAINT_PROPER("socketpair");
6ad3d225 2346 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2347 RETPUSHUNDEF;
460c8493
IZ		 2348 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2349 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2350 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ		 2351 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2352 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2353 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2354 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2355 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2356 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2357 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2358 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2359 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2360 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2361 RETPUSHUNDEF;
2362 }
8d2a6795
GS		 2363#if defined(HAS_FCNTL) && defined(F_SETFD)
2364 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2365 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2366#endif
a0d0e21e
LW		 2367
2368 RETPUSHYES;
2369#else
cea2e8a9 2370 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2371#endif
2372}
2373
2374PP(pp_bind)
2375{
a0d0e21e 2376#ifdef HAS_SOCKET
97aff369 2377 dVAR; dSP;
7452cf6a 2378 SV * const addrsv = POPs;
349d4f2f
NC		 2379 /* OK, so on what platform does bind modify addr? */
2380 const char *addr;
7452cf6a
AL		 2381 GV * const gv = (GV*)POPs;
2382 register IO * const io = GvIOn(gv);
a0d0e21e 2383 STRLEN len;
eec2d3df 2384 int bind_ok = 0;
a0d0e21e
LW		 2385
2386 if (!io || !IoIFP(io))
2387 goto nuts;
2388
349d4f2f 2389 addr = SvPV_const(addrsv, len);
a0d0e21e 2390 TAINT_PROPER("bind");
eec2d3df
GS		 2391 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2392 (struct sockaddr *)addr, len) >= 0)
2393 bind_ok = 1;
2394
eec2d3df
GS		 2395
2396 if (bind_ok)
a0d0e21e
LW		 2397 RETPUSHYES;
2398 else
2399 RETPUSHUNDEF;
2400
2401nuts:
599cee73 2402 if (ckWARN(WARN_CLOSED))
bc37a18f 2403 report_evil_fh(gv, io, PL_op->op_type);
93189314 2404 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2405 RETPUSHUNDEF;
2406#else
cea2e8a9 2407 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2408#endif
2409}
2410
2411PP(pp_connect)
2412{
a0d0e21e 2413#ifdef HAS_SOCKET
97aff369 2414 dVAR; dSP;
7452cf6a
AL		 2415 SV * const addrsv = POPs;
2416 GV * const gv = (GV*)POPs;
2417 register IO * const io = GvIOn(gv);
349d4f2f 2418 const char *addr;
a0d0e21e
LW		 2419 STRLEN len;
2420
2421 if (!io || !IoIFP(io))
2422 goto nuts;
2423
349d4f2f 2424 addr = SvPV_const(addrsv, len);
a0d0e21e 2425 TAINT_PROPER("connect");
6ad3d225 2426 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2427 RETPUSHYES;
2428 else
2429 RETPUSHUNDEF;
2430
2431nuts:
599cee73 2432 if (ckWARN(WARN_CLOSED))
bc37a18f 2433 report_evil_fh(gv, io, PL_op->op_type);
93189314 2434 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2435 RETPUSHUNDEF;
2436#else
cea2e8a9 2437 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2438#endif
2439}
2440
2441PP(pp_listen)
2442{
a0d0e21e 2443#ifdef HAS_SOCKET
97aff369 2444 dVAR; dSP;
7452cf6a
AL		 2445 const int backlog = POPi;
2446 GV * const gv = (GV*)POPs;
2447 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2448
c289d2f7 2449 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2450 goto nuts;
2451
6ad3d225 2452 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2453 RETPUSHYES;
2454 else
2455 RETPUSHUNDEF;
2456
2457nuts:
599cee73 2458 if (ckWARN(WARN_CLOSED))
bc37a18f 2459 report_evil_fh(gv, io, PL_op->op_type);
93189314 2460 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2461 RETPUSHUNDEF;
2462#else
cea2e8a9 2463 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2464#endif
2465}
2466
2467PP(pp_accept)
2468{
a0d0e21e 2469#ifdef HAS_SOCKET
97aff369 2470 dVAR; dSP; dTARGET;
a0d0e21e
LW		 2471 register IO *nstio;
2472 register IO *gstio;
93d47a36
JH		 2473 char namebuf[MAXPATHLEN];
2474#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2475 Sock_size_t len = sizeof (struct sockaddr_in);
2476#else
2477 Sock_size_t len = sizeof namebuf;
2478#endif
7452cf6a
AL		 2479 GV * const ggv = (GV*)POPs;
2480 GV * const ngv = (GV*)POPs;
a0d0e21e
LW		 2481 int fd;
2482
a0d0e21e
LW		 2483 if (!ngv)
2484 goto badexit;
2485 if (!ggv)
2486 goto nuts;
2487
2488 gstio = GvIO(ggv);
2489 if (!gstio || !IoIFP(gstio))
2490 goto nuts;
2491
2492 nstio = GvIOn(ngv);
93d47a36 2493 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
a0d0e21e
LW		 2494 if (fd < 0)
2495 goto badexit;
a70048fb
AB		 2496 if (IoIFP(nstio))
2497 do_close(ngv, FALSE);
460c8493
IZ		 2498 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2499 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2500 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2501 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2502 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2503 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2504 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2505 goto badexit;
2506 }
8d2a6795
GS		 2507#if defined(HAS_FCNTL) && defined(F_SETFD)
2508 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2509#endif
a0d0e21e 2510
ed79a026 2511#ifdef EPOC
93d47a36 2512 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
a9f1f6b0 2513 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026 2514#endif
381c1bae 2515#ifdef __SCO_VERSION__
93d47a36 2516 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2517#endif
ed79a026 2518
93d47a36 2519 PUSHp(namebuf, len);
a0d0e21e
LW		 2520 RETURN;
2521
2522nuts:
599cee73 2523 if (ckWARN(WARN_CLOSED))
bc37a18f 2524 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
93189314 2525 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2526
2527badexit:
2528 RETPUSHUNDEF;
2529
2530#else
cea2e8a9 2531 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2532#endif
2533}
2534
2535PP(pp_shutdown)
2536{
a0d0e21e 2537#ifdef HAS_SOCKET
97aff369 2538 dVAR; dSP; dTARGET;
7452cf6a
AL		 2539 const int how = POPi;
2540 GV * const gv = (GV*)POPs;
2541 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 2542
2543 if (!io || !IoIFP(io))
2544 goto nuts;
2545
6ad3d225 2546 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2547 RETURN;
2548
2549nuts:
599cee73 2550 if (ckWARN(WARN_CLOSED))
bc37a18f 2551 report_evil_fh(gv, io, PL_op->op_type);
93189314 2552 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2553 RETPUSHUNDEF;
2554#else
cea2e8a9 2555 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2556#endif
2557}
2558
a0d0e21e
LW		 2559PP(pp_ssockopt)
2560{
a0d0e21e 2561#ifdef HAS_SOCKET
97aff369 2562 dVAR; dSP;
7452cf6a 2563 const int optype = PL_op->op_type;
561b68a9 2564 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2565 const unsigned int optname = (unsigned int) POPi;
2566 const unsigned int lvl = (unsigned int) POPi;
2567 GV * const gv = (GV*)POPs;
2568 register IO * const io = GvIOn(gv);
a0d0e21e 2569 int fd;
1e422769 2570 Sock_size_t len;
a0d0e21e 2571
a0d0e21e
LW		 2572 if (!io || !IoIFP(io))
2573 goto nuts;
2574
760ac839 2575 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2576 switch (optype) {
2577 case OP_GSOCKOPT:
748a9306 2578 SvGROW(sv, 257);
a0d0e21e 2579 (void)SvPOK_only(sv);
748a9306
LW		 2580 SvCUR_set(sv,256);
2581 *SvEND(sv) ='\0';
1e422769 2582 len = SvCUR(sv);
6ad3d225 2583 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2584 goto nuts2;
1e422769 2585 SvCUR_set(sv, len);
748a9306 2586 *SvEND(sv) ='\0';
a0d0e21e
LW		 2587 PUSHs(sv);
2588 break;
2589 case OP_SSOCKOPT: {
1215b447
JH		 2590#if defined(__SYMBIAN32__)
2591# define SETSOCKOPT_OPTION_VALUE_T void *
2592#else
2593# define SETSOCKOPT_OPTION_VALUE_T const char *
2594#endif
2595 /* XXX TODO: We need to have a proper type (a Configure probe,
2596 * etc.) for what the C headers think of the third argument of
2597 * setsockopt(), the option_value read-only buffer: is it
2598 * a "char *", or a "void *", const or not. Some compilers
2599 * don't take kindly to e.g. assuming that "char *" implicitly
2600 * promotes to a "void *", or to explicitly promoting/demoting
2601 * consts to non/vice versa. The "const void *" is the SUS
2602 * definition, but that does not fly everywhere for the above
2603 * reasons. */
2604 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769 2605 int aint;
2606 if (SvPOKp(sv)) {
2d8e6c8d 2607 STRLEN l;
1215b447 2608 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2609 len = l;
1e422769 2610 }
56ee1660 2611 else {
a0d0e21e 2612 aint = (int)SvIV(sv);
1215b447 2613 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2614 len = sizeof(int);
2615 }
6ad3d225 2616 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2617 goto nuts2;
3280af22 2618 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2619 }
2620 break;
2621 }
2622 RETURN;
2623
2624nuts:
599cee73 2625 if (ckWARN(WARN_CLOSED))
bc37a18f 2626 report_evil_fh(gv, io, optype);
93189314 2627 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2628nuts2:
2629 RETPUSHUNDEF;
2630
2631#else
af51a00e 2632 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2633#endif
2634}
2635
a0d0e21e
LW		 2636PP(pp_getpeername)
2637{
a0d0e21e 2638#ifdef HAS_SOCKET
97aff369 2639 dVAR; dSP;
7452cf6a
AL		 2640 const int optype = PL_op->op_type;
2641 GV * const gv = (GV*)POPs;
2642 register IO * const io = GvIOn(gv);
2643 Sock_size_t len;
a0d0e21e
LW		 2644 SV *sv;
2645 int fd;
a0d0e21e
LW		 2646
2647 if (!io || !IoIFP(io))
2648 goto nuts;
2649
561b68a9 2650 sv = sv_2mortal(newSV(257));
748a9306 2651 (void)SvPOK_only(sv);
1e422769 2652 len = 256;
2653 SvCUR_set(sv, len);
748a9306 2654 *SvEND(sv) ='\0';
760ac839 2655 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2656 switch (optype) {
2657 case OP_GETSOCKNAME:
6ad3d225 2658 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2659 goto nuts2;
2660 break;
2661 case OP_GETPEERNAME:
6ad3d225 2662 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2663 goto nuts2;
490ab354
JH		 2664#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2665 {
2666 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";
2667 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2668 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2669 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2670 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2671 goto nuts2;
490ab354
JH		 2672 }
2673 }
2674#endif
a0d0e21e
LW		 2675 break;
2676 }
13826f2c
CS		 2677#ifdef BOGUS_GETNAME_RETURN
2678 /* Interactive Unix, getpeername() and getsockname()
2679 does not return valid namelen */
1e422769 2680 if (len == BOGUS_GETNAME_RETURN)
2681 len = sizeof(struct sockaddr);
13826f2c 2682#endif
1e422769 2683 SvCUR_set(sv, len);
748a9306 2684 *SvEND(sv) ='\0';
a0d0e21e
LW		 2685 PUSHs(sv);
2686 RETURN;
2687
2688nuts:
599cee73 2689 if (ckWARN(WARN_CLOSED))
bc37a18f 2690 report_evil_fh(gv, io, optype);
93189314 2691 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2692nuts2:
2693 RETPUSHUNDEF;
2694
2695#else
af51a00e 2696 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2697#endif
2698}
2699
2700/* Stat calls. */
2701
a0d0e21e
LW		 2702PP(pp_stat)
2703{
97aff369 2704 dVAR;
39644a26 2705 dSP;
2dd78f96 2706 GV *gv;
54310121 2707 I32 gimme;
a0d0e21e
LW		 2708 I32 max = 13;
2709
533c011a 2710 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2711 gv = cGVOP_gv;
8a4e5b40 2712 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2713 if (gv != PL_defgv) {
5d329e6e 2714 do_fstat_warning_check:
5d3e98de 2715 if (ckWARN(WARN_IO))
9014280d 2716 Perl_warner(aTHX_ packWARN(WARN_IO),
5d3e98de
RGS		 2717 "lstat() on filehandle %s", GvENAME(gv));
2718 } else if (PL_laststype != OP_LSTAT)
8a4e5b40 2719 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2720 }
2721
748a9306 2722 do_fstat:
2dd78f96 2723 if (gv != PL_defgv) {
3280af22 2724 PL_laststype = OP_STAT;
2dd78f96 2725 PL_statgv = gv;
c69006e4 2726 sv_setpvn(PL_statname, "", 0);
2dd78f96
JH		 2727 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2728 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
a0d0e21e 2729 }
9ddeeac9 2730 if (PL_laststatval < 0) {
2dd78f96
JH		 2731 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2732 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2733 max = 0;
9ddeeac9 2734 }
a0d0e21e
LW		 2735 }
2736 else {
7452cf6a 2737 SV* const sv = POPs;
748a9306 2738 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2739 gv = (GV*)sv;
748a9306
LW		 2740 goto do_fstat;
2741 }
2742 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 2743 gv = (GV*)SvRV(sv);
5d329e6e
NC		 2744 if (PL_op->op_type == OP_LSTAT)
2745 goto do_fstat_warning_check;
748a9306
LW		 2746 goto do_fstat;
2747 }
0510663f 2748 sv_setpv(PL_statname, SvPV_nolen_const(sv));
a0714e2c 2749 PL_statgv = NULL;
533c011a
NIS		 2750 PL_laststype = PL_op->op_type;
2751 if (PL_op->op_type == OP_LSTAT)
0510663f 2752 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2753 else
0510663f 2754 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2755 if (PL_laststatval < 0) {
0510663f 2756 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
9014280d 2757 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW		 2758 max = 0;
2759 }
2760 }
2761
54310121 2762 gimme = GIMME_V;
2763 if (gimme != G_ARRAY) {
2764 if (gimme != G_VOID)
2765 XPUSHs(boolSV(max));
2766 RETURN;
a0d0e21e
LW		 2767 }
2768 if (max) {
36477c24 2769 EXTEND(SP, max);
2770 EXTEND_MORTAL(max);
1ff81528
PL		 2771 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2772 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2773 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2774 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2775#if Uid_t_size > IVSIZE
2776 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2777#else
23dcd6c8 2778# if Uid_t_sign <= 0
1ff81528 2779 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2780# else
2781 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2782# endif
146174a9 2783#endif
301e8125 2784#if Gid_t_size > IVSIZE
146174a9
CB		 2785 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2786#else
23dcd6c8 2787# if Gid_t_sign <= 0
1ff81528 2788 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2789# else
2790 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2791# endif
146174a9 2792#endif
cbdc8872 2793#ifdef USE_STAT_RDEV
1ff81528 2794 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2795#else
396482e1 2796 PUSHs(sv_2mortal(newSVpvs("")));
cbdc8872 2797#endif
146174a9 2798#if Off_t_size > IVSIZE
4a9d6100 2799 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
146174a9 2800#else
1ff81528 2801 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2802#endif
cbdc8872 2803#ifdef BIG_TIME
172ae379
JH		 2804 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2805 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2806 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2807#else
1ff81528
PL		 2808 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2809 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2810 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
cbdc8872 2811#endif
a0d0e21e 2812#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2813 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2814 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2815#else
396482e1
GA		 2816 PUSHs(sv_2mortal(newSVpvs("")));
2817 PUSHs(sv_2mortal(newSVpvs("")));
a0d0e21e
LW		 2818#endif
2819 }
2820 RETURN;
2821}
2822
fbb0b3b3
RGS		 2823/* This macro is used by the stacked filetest operators :
2824 * if the previous filetest failed, short-circuit and pass its value.
2825 * Else, discard it from the stack and continue. --rgs
2826 */
2827#define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2828 if (TOPs == &PL_sv_no || TOPs == &PL_sv_undef) { RETURN; } \
2829 else { (void)POPs; PUTBACK; } \
2830 }
2831
a0d0e21e
LW		 2832PP(pp_ftrread)
2833{
97aff369 2834 dVAR;
9cad6237 2835 I32 result;
af9e49b4
NC		 2836 /* Not const, because things tweak this below. Not bool, because there's
2837 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2838#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2839 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2840 /* Giving some sort of initial value silences compilers. */
2841# ifdef R_OK
2842 int access_mode = R_OK;
2843# else
2844 int access_mode = 0;
2845# endif
5ff3f7a4 2846#else
af9e49b4
NC		 2847 /* access_mode is never used, but leaving use_access in makes the
2848 conditional compiling below much clearer. */
2849 I32 use_access = 0;
5ff3f7a4 2850#endif
af9e49b4 2851 int stat_mode = S_IRUSR;
a0d0e21e 2852
af9e49b4 2853 bool effective = FALSE;
2a3ff820 2854 dSP;
af9e49b4 2855
fbb0b3b3 2856 STACKED_FTEST_CHECK;
af9e49b4
NC		 2857
2858 switch (PL_op->op_type) {
2859 case OP_FTRREAD:
2860#if !(defined(HAS_ACCESS) && defined(R_OK))
2861 use_access = 0;
2862#endif
2863 break;
2864
2865 case OP_FTRWRITE:
5ff3f7a4 2866#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 2867 access_mode = W_OK;
5ff3f7a4 2868#else
af9e49b4 2869 use_access = 0;
5ff3f7a4 2870#endif
af9e49b4
NC		 2871 stat_mode = S_IWUSR;
2872 break;
a0d0e21e 2873
af9e49b4 2874 case OP_FTREXEC:
5ff3f7a4 2875#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 2876 access_mode = X_OK;
5ff3f7a4 2877#else
af9e49b4 2878 use_access = 0;
5ff3f7a4 2879#endif
af9e49b4
NC		 2880 stat_mode = S_IXUSR;
2881 break;
a0d0e21e 2882
af9e49b4 2883 case OP_FTEWRITE:
faee0e31 2884#ifdef PERL_EFF_ACCESS
af9e49b4 2885 access_mode = W_OK;
5ff3f7a4 2886#endif
af9e49b4
NC		 2887 stat_mode = S_IWUSR;
2888 /* Fall through */
a0d0e21e 2889
af9e49b4
NC		 2890 case OP_FTEREAD:
2891#ifndef PERL_EFF_ACCESS
2892 use_access = 0;
2893#endif
2894 effective = TRUE;
2895 break;
2896
2897
2898 case OP_FTEEXEC:
faee0e31 2899#ifdef PERL_EFF_ACCESS
af9e49b4 2900 access_mode = W_OK;
5ff3f7a4 2901#else
af9e49b4 2902 use_access = 0;
5ff3f7a4 2903#endif
af9e49b4
NC		 2904 stat_mode = S_IXUSR;
2905 effective = TRUE;
2906 break;
2907 }
a0d0e21e 2908
af9e49b4
NC		 2909 if (use_access) {
2910#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2911 const char *const name = POPpx;
2912 if (effective) {
2913# ifdef PERL_EFF_ACCESS
2914 result = PERL_EFF_ACCESS(name, access_mode);
2915# else
2916 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
2917 OP_NAME(PL_op));
2918# endif
2919 }
2920 else {
2921# ifdef HAS_ACCESS
2922 result = access(name, access_mode);
2923# else
2924 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
2925# endif
2926 }
5ff3f7a4
GS		 2927 if (result == 0)
2928 RETPUSHYES;
2929 if (result < 0)
2930 RETPUSHUNDEF;
2931 RETPUSHNO;
af9e49b4 2932#endif
22865c03 2933 }
af9e49b4 2934
cea2e8a9 2935 result = my_stat();
22865c03 2936 SPAGAIN;
a0d0e21e
LW		 2937 if (result < 0)
2938 RETPUSHUNDEF;
af9e49b4 2939 if (cando(stat_mode, effective, &PL_statcache))
a0d0e21e
LW		 2940 RETPUSHYES;
2941 RETPUSHNO;
2942}
2943
2944PP(pp_ftis)
2945{
97aff369 2946 dVAR;
fbb0b3b3 2947 I32 result;
d7f0a2f4 2948 const int op_type = PL_op->op_type;
2a3ff820 2949 dSP;
fbb0b3b3
RGS		 2950 STACKED_FTEST_CHECK;
2951 result = my_stat();
2952 SPAGAIN;
a0d0e21e
LW		 2953 if (result < 0)
2954 RETPUSHUNDEF;
d7f0a2f4
NC		 2955 if (op_type == OP_FTIS)
2956 RETPUSHYES;
957b0e1d 2957 {
d7f0a2f4
NC		 2958 /* You can't dTARGET inside OP_FTIS, because you'll get
2959 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 2960 dTARGET;
d7f0a2f4 2961 switch (op_type) {
957b0e1d
NC		 2962 case OP_FTSIZE:
2963#if Off_t_size > IVSIZE
2964 PUSHn(PL_statcache.st_size);
2965#else
2966 PUSHi(PL_statcache.st_size);
2967#endif
2968 break;
2969 case OP_FTMTIME:
2970 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
2971 break;
2972 case OP_FTATIME:
2973 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
2974 break;
2975 case OP_FTCTIME:
2976 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
2977 break;
2978 }
2979 }
2980 RETURN;
a0d0e21e
LW		 2981}
2982
a0d0e21e
LW		 2983PP(pp_ftrowned)
2984{
97aff369 2985 dVAR;
fbb0b3b3 2986 I32 result;
2a3ff820 2987 dSP;
17ad201a
NC		 2988
2989 /* I believe that all these three are likely to be defined on most every
2990 system these days. */
2991#ifndef S_ISUID
2992 if(PL_op->op_type == OP_FTSUID)
2993 RETPUSHNO;
2994#endif
2995#ifndef S_ISGID
2996 if(PL_op->op_type == OP_FTSGID)
2997 RETPUSHNO;
2998#endif
2999#ifndef S_ISVTX
3000 if(PL_op->op_type == OP_FTSVTX)
3001 RETPUSHNO;
3002#endif
3003
fbb0b3b3
RGS		 3004 STACKED_FTEST_CHECK;
3005 result = my_stat();
3006 SPAGAIN;
a0d0e21e
LW		 3007 if (result < 0)
3008 RETPUSHUNDEF;
f1cb2d48
NC		 3009 switch (PL_op->op_type) {
3010 case OP_FTROWNED:
9ab9fa88 3011 if (PL_statcache.st_uid == PL_uid)
f1cb2d48
NC		 3012 RETPUSHYES;
3013 break;
3014 case OP_FTEOWNED:
3015 if (PL_statcache.st_uid == PL_euid)
3016 RETPUSHYES;
3017 break;
3018 case OP_FTZERO:
3019 if (PL_statcache.st_size == 0)
3020 RETPUSHYES;
3021 break;
3022 case OP_FTSOCK:
3023 if (S_ISSOCK(PL_statcache.st_mode))
3024 RETPUSHYES;
3025 break;
3026 case OP_FTCHR:
3027 if (S_ISCHR(PL_statcache.st_mode))
3028 RETPUSHYES;
3029 break;
3030 case OP_FTBLK:
3031 if (S_ISBLK(PL_statcache.st_mode))
3032 RETPUSHYES;
3033 break;
3034 case OP_FTFILE:
3035 if (S_ISREG(PL_statcache.st_mode))
3036 RETPUSHYES;
3037 break;
3038 case OP_FTDIR:
3039 if (S_ISDIR(PL_statcache.st_mode))
3040 RETPUSHYES;
3041 break;
3042 case OP_FTPIPE:
3043 if (S_ISFIFO(PL_statcache.st_mode))
3044 RETPUSHYES;
3045 break;
a0d0e21e 3046#ifdef S_ISUID
17ad201a
NC		 3047 case OP_FTSUID:
3048 if (PL_statcache.st_mode & S_ISUID)
3049 RETPUSHYES;
3050 break;
a0d0e21e 3051#endif
a0d0e21e 3052#ifdef S_ISGID
17ad201a
NC		 3053 case OP_FTSGID:
3054 if (PL_statcache.st_mode & S_ISGID)
3055 RETPUSHYES;
3056 break;
3057#endif
3058#ifdef S_ISVTX
3059 case OP_FTSVTX:
3060 if (PL_statcache.st_mode & S_ISVTX)
3061 RETPUSHYES;
3062 break;
a0d0e21e 3063#endif
17ad201a 3064 }
a0d0e21e
LW		 3065 RETPUSHNO;
3066}
3067
17ad201a 3068PP(pp_ftlink)
a0d0e21e 3069{
97aff369 3070 dVAR;
17ad201a 3071 I32 result = my_lstat();
39644a26 3072 dSP;
a0d0e21e
LW		 3073 if (result < 0)
3074 RETPUSHUNDEF;
17ad201a 3075 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e 3076 RETPUSHYES;
a0d0e21e
LW		 3077 RETPUSHNO;
3078}
3079
3080PP(pp_fttty)
3081{
97aff369 3082 dVAR;
39644a26 3083 dSP;
a0d0e21e
LW		 3084 int fd;
3085 GV *gv;
a0714e2c 3086 SV *tmpsv = NULL;
fb73857a 3087
fbb0b3b3
RGS		 3088 STACKED_FTEST_CHECK;
3089
533c011a 3090 if (PL_op->op_flags & OPf_REF)
146174a9 3091 gv = cGVOP_gv;
fb73857a 3092 else if (isGV(TOPs))
3093 gv = (GV*)POPs;
3094 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3095 gv = (GV*)SvRV(POPs);
a0d0e21e 3096 else
f776e3cd 3097 gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
fb73857a 3098
a0d0e21e 3099 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3100 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
7a5fd60d 3101 else if (tmpsv && SvOK(tmpsv)) {
349d4f2f 3102 const char *tmps = SvPV_nolen_const(tmpsv);
7a5fd60d
NC		 3103 if (isDIGIT(*tmps))
3104 fd = atoi(tmps);
3105 else
3106 RETPUSHUNDEF;
3107 }
a0d0e21e
LW		 3108 else
3109 RETPUSHUNDEF;
6ad3d225 3110 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3111 RETPUSHYES;
3112 RETPUSHNO;
3113}
3114
16d20bd9
AD		 3115#if defined(atarist) /* this will work with atariST. Configure will
3116 make guesses for other systems. */
3117# define FILE_base(f) ((f)->_base)
3118# define FILE_ptr(f) ((f)->_ptr)
3119# define FILE_cnt(f) ((f)->_cnt)
3120# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3121#endif
3122
3123PP(pp_fttext)
3124{
97aff369 3125 dVAR;
39644a26 3126 dSP;
a0d0e21e
LW		 3127 I32 i;
3128 I32 len;
3129 I32 odd = 0;
3130 STDCHAR tbuf[512];
3131 register STDCHAR *s;
3132 register IO *io;
5f05dabc 3133 register SV *sv;
3134 GV *gv;
146174a9 3135 PerlIO *fp;
a0d0e21e 3136
fbb0b3b3
RGS		 3137 STACKED_FTEST_CHECK;
3138
533c011a 3139 if (PL_op->op_flags & OPf_REF)
146174a9 3140 gv = cGVOP_gv;
5f05dabc 3141 else if (isGV(TOPs))
3142 gv = (GV*)POPs;
3143 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3144 gv = (GV*)SvRV(POPs);
3145 else
a0714e2c 3146 gv = NULL;
5f05dabc 3147
3148 if (gv) {
a0d0e21e 3149 EXTEND(SP, 1);
3280af22
NIS		 3150 if (gv == PL_defgv) {
3151 if (PL_statgv)
3152 io = GvIO(PL_statgv);
a0d0e21e 3153 else {
3280af22 3154 sv = PL_statname;
a0d0e21e
LW		 3155 goto really_filename;
3156 }
3157 }
3158 else {
3280af22
NIS		 3159 PL_statgv = gv;
3160 PL_laststatval = -1;
c69006e4 3161 sv_setpvn(PL_statname, "", 0);
3280af22 3162 io = GvIO(PL_statgv);
a0d0e21e
LW		 3163 }
3164 if (io && IoIFP(io)) {
5f05dabc 3165 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3166 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3167 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3168 if (PL_laststatval < 0)
5f05dabc 3169 RETPUSHUNDEF;
9cbac4c7 3170 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3171 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3172 RETPUSHNO;
3173 else
3174 RETPUSHYES;
9cbac4c7 3175 }
a20bf0c3 3176 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3177 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3178 if (i != EOF)
760ac839 3179 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3180 }
a20bf0c3 3181 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3182 RETPUSHYES;
a20bf0c3
JH		 3183 len = PerlIO_get_bufsiz(IoIFP(io));
3184 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3185 /* sfio can have large buffers - limit to 512 */
3186 if (len > 512)
3187 len = 512;
a0d0e21e
LW		 3188 }
3189 else {
2dd78f96 3190 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3191 gv = cGVOP_gv;
2dd78f96 3192 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3193 }
93189314 3194 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 3195 RETPUSHUNDEF;
3196 }
3197 }
3198 else {
3199 sv = POPs;
5f05dabc 3200 really_filename:
a0714e2c 3201 PL_statgv = NULL;
5c9aa243 3202 PL_laststype = OP_STAT;
d5263905 3203 sv_setpv(PL_statname, SvPV_nolen_const(sv));
aa07b2f6 3204 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
349d4f2f
NC		 3205 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3206 '\n'))
9014280d 3207 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
a0d0e21e
LW		 3208 RETPUSHUNDEF;
3209 }
146174a9
CB		 3210 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3211 if (PL_laststatval < 0) {
3212 (void)PerlIO_close(fp);
5f05dabc 3213 RETPUSHUNDEF;
146174a9 3214 }
bd61b366 3215 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
146174a9
CB		 3216 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3217 (void)PerlIO_close(fp);
a0d0e21e 3218 if (len <= 0) {
533c011a 3219 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3220 RETPUSHNO; /* special case NFS directories */
3221 RETPUSHYES; /* null file is anything */
3222 }
3223 s = tbuf;
3224 }
3225
3226 /* now scan s to look for textiness */
4633a7c4 3227 /* XXX ASCII dependent code */
a0d0e21e 3228
146174a9
CB		 3229#if defined(DOSISH) || defined(USEMYBINMODE)
3230 /* ignore trailing ^Z on short files */
3231 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3232 --len;
3233#endif
3234
a0d0e21e
LW		 3235 for (i = 0; i < len; i++, s++) {
3236 if (!*s) { /* null never allowed in text */
3237 odd += len;
3238 break;
3239 }
9d116dd7 3240#ifdef EBCDIC
301e8125 3241 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3242 odd++;
3243#else
146174a9
CB		 3244 else if (*s & 128) {
3245#ifdef USE_LOCALE
2de3dbcc 3246 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3247 continue;
3248#endif
3249 /* utf8 characters don't count as odd */
fd400ab9 3250 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3251 int ulen = UTF8SKIP(s);
3252 if (ulen < len - i) {
3253 int j;
3254 for (j = 1; j < ulen; j++) {
fd400ab9 3255 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3256 goto not_utf8;
3257 }
3258 --ulen; /* loop does extra increment */
3259 s += ulen;
3260 i += ulen;
3261 continue;
3262 }
3263 }
3264 not_utf8:
3265 odd++;
146174a9 3266 }
a0d0e21e
LW		 3267 else if (*s < 32 &&
3268 *s != '\n' && *s != '\r' && *s != '\b' &&
3269 *s != '\t' && *s != '\f' && *s != 27)
3270 odd++;
9d116dd7 3271#endif
a0d0e21e
LW		 3272 }
3273
533c011a 3274 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3275 RETPUSHNO;
3276 else
3277 RETPUSHYES;
3278}
3279
a0d0e21e
LW		 3280/* File calls. */
3281
3282PP(pp_chdir)
3283{
97aff369 3284 dVAR; dSP; dTARGET;
c445ea15 3285 const char *tmps = NULL;
9a957fbc 3286 GV *gv = NULL;
a0d0e21e 3287
c4aca7d0 3288 if( MAXARG == 1 ) {
9a957fbc 3289 SV * const sv = POPs;
d4ac975e
GA		 3290 if (PL_op->op_flags & OPf_SPECIAL) {
3291 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3292 }
3293 else if (SvTYPE(sv) == SVt_PVGV) {
c4aca7d0
GA		 3294 gv = (GV*)sv;
3295 }
3296 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
3297 gv = (GV*)SvRV(sv);
3298 }
3299 else {
3300 tmps = SvPVx_nolen_const(sv);
3301 }
3302 }
35ae6b54 3303
c4aca7d0 3304 if( !gv && (!tmps || !*tmps) ) {
9a957fbc
AL		 3305 HV * const table = GvHVn(PL_envgv);
3306 SV **svp;
3307
a4fc7abc
AL		 3308 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3309 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
491527d0 3310#ifdef VMS
a4fc7abc 3311 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
491527d0 3312#endif
35ae6b54
MS		 3313 )
3314 {
3315 if( MAXARG == 1 )
9014280d 3316 deprecate("chdir('') or chdir(undef) as chdir()");
8c074e2a 3317 tmps = SvPV_nolen_const(*svp);
35ae6b54 3318 }
72f496dc 3319 else {
389ec635 3320 PUSHi(0);
b7ab37f8 3321 TAINT_PROPER("chdir");
389ec635
MS		 3322 RETURN;
3323 }
8ea155d1 3324 }
8ea155d1 3325
a0d0e21e 3326 TAINT_PROPER("chdir");
c4aca7d0
GA		 3327 if (gv) {
3328#ifdef HAS_FCHDIR
9a957fbc 3329 IO* const io = GvIO(gv);
c4aca7d0
GA		 3330 if (io) {
3331 if (IoIFP(io)) {
3332 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3333 }
3334 else if (IoDIRP(io)) {
3335#ifdef HAS_DIRFD
3336 PUSHi(fchdir(dirfd(IoDIRP(io))) >= 0);
3337#else
0f1f2428 3338 DIE(aTHX_ PL_no_func, "dirfd");
c4aca7d0
GA		 3339#endif
3340 }
3341 else {
4dc171f0
PD		 3342 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3343 report_evil_fh(gv, io, PL_op->op_type);
3344 SETERRNO(EBADF, RMS_IFI);
c4aca7d0
GA		 3345 PUSHi(0);
3346 }
3347 }
3348 else {
4dc171f0
PD		 3349 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3350 report_evil_fh(gv, io, PL_op->op_type);
3351 SETERRNO(EBADF,RMS_IFI);
c4aca7d0
GA		 3352 PUSHi(0);
3353 }
3354#else
3355 DIE(aTHX_ PL_no_func, "fchdir");
3356#endif
3357 }
3358 else
b8ffc8df 3359 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3360#ifdef VMS
3361 /* Clear the DEFAULT element of ENV so we'll get the new value
3362 * in the future. */
6b88bc9c 3363 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3364#endif
a0d0e21e
LW		 3365 RETURN;
3366}
3367
3368PP(pp_chown)
3369{
97aff369 3370 dVAR; dSP; dMARK; dTARGET;
605b9385 3371 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
76ffd3b9 3372
a0d0e21e 3373 SP = MARK;
b59aed67 3374 XPUSHi(value);
a0d0e21e 3375 RETURN;
a0d0e21e
LW		 3376}
3377
3378PP(pp_chroot)
3379{
a0d0e21e 3380#ifdef HAS_CHROOT
97aff369 3381 dVAR; dSP; dTARGET;
7452cf6a 3382 char * const tmps = POPpx;
a0d0e21e
LW		 3383 TAINT_PROPER("chroot");
3384 PUSHi( chroot(tmps) >= 0 );
3385 RETURN;
3386#else
cea2e8a9 3387 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3388#endif
3389}
3390
a0d0e21e
LW		 3391PP(pp_rename)
3392{
97aff369 3393 dVAR; dSP; dTARGET;
a0d0e21e 3394 int anum;
7452cf6a
AL		 3395 const char * const tmps2 = POPpconstx;
3396 const char * const tmps = SvPV_nolen_const(TOPs);
a0d0e21e
LW		 3397 TAINT_PROPER("rename");
3398#ifdef HAS_RENAME
baed7233 3399 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3400#else
6b88bc9c 3401 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
ed969818
W		 3402 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3403 anum = 1;
3404 else {
3654eb6c 3405 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
ed969818
W		 3406 (void)UNLINK(tmps2);
3407 if (!(anum = link(tmps, tmps2)))
3408 anum = UNLINK(tmps);
3409 }
a0d0e21e
LW		 3410 }
3411#endif
3412 SETi( anum >= 0 );
3413 RETURN;
3414}
3415
ce6987d0 3416#if defined(HAS_LINK) || defined(HAS_SYMLINK)
a0d0e21e
LW		 3417PP(pp_link)
3418{
97aff369 3419 dVAR; dSP; dTARGET;
ce6987d0
NC		 3420 const int op_type = PL_op->op_type;
3421 int result;
a0d0e21e 3422
ce6987d0
NC		 3423# ifndef HAS_LINK
3424 if (op_type == OP_LINK)
3425 DIE(aTHX_ PL_no_func, "link");
3426# endif
3427# ifndef HAS_SYMLINK
3428 if (op_type == OP_SYMLINK)
3429 DIE(aTHX_ PL_no_func, "symlink");
3430# endif
3431
3432 {
7452cf6a
AL		 3433 const char * const tmps2 = POPpconstx;
3434 const char * const tmps = SvPV_nolen_const(TOPs);
ce6987d0
NC		 3435 TAINT_PROPER(PL_op_desc[op_type]);
3436 result =
3437# if defined(HAS_LINK)
3438# if defined(HAS_SYMLINK)
3439 /* Both present - need to choose which. */
3440 (op_type == OP_LINK) ?
3441 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3442# else
4a8ebb7f
SH		 3443 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3444 PerlLIO_link(tmps, tmps2);
ce6987d0
NC		 3445# endif
3446# else
3447# if defined(HAS_SYMLINK)
4a8ebb7f
SH		 3448 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3449 symlink(tmps, tmps2);
ce6987d0
NC		 3450# endif
3451# endif
3452 }
3453
3454 SETi( result >= 0 );
a0d0e21e 3455 RETURN;
ce6987d0 3456}