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update to pp_complement() via 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);
8b8cacda 1304 PerlIO *ofp;
760ac839 1305 PerlIO *fp;
8772537c
AL		 1306 SV **newsp;
1307 I32 gimme;
c09156bb 1308 register PERL_CONTEXT *cx;
a0d0e21e 1309
8b8cacda
B		 1310 if (!io || !(ofp = IoOFP(io)))
1311 goto forget_top;
1312
760ac839 1313 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1314 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1315
3280af22
NIS		 1316 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1317 PL_formtarget != PL_toptarget)
a0d0e21e 1318 {
4633a7c4
LW		 1319 GV *fgv;
1320 CV *cv;
a0d0e21e
LW		 1321 if (!IoTOP_GV(io)) {
1322 GV *topgv;
a0d0e21e
LW		 1323
1324 if (!IoTOP_NAME(io)) {
1b6737cc 1325 SV *topname;
a0d0e21e
LW		 1326 if (!IoFMT_NAME(io))
1327 IoFMT_NAME(io) = savepv(GvNAME(gv));
0bd0581c 1328 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
f776e3cd 1329 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1330 if ((topgv && GvFORM(topgv)) ||
fafc274c 1331 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1332 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1333 else
89529cee 1334 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1335 }
f776e3cd 1336 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1337 if (!topgv || !GvFORM(topgv)) {
b929a54b 1338 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1339 goto forget_top;
1340 }
1341 IoTOP_GV(io) = topgv;
1342 }
748a9306
LW		 1343 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1344 I32 lines = IoLINES_LEFT(io);
504618e9 1345 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD		 1346 if (lines <= 0) /* Yow, header didn't even fit!!! */
1347 goto forget_top;
748a9306
LW		 1348 while (lines-- > 0) {
1349 s = strchr(s, '\n');
1350 if (!s)
1351 break;
1352 s++;
1353 }
1354 if (s) {
f54cb97a 1355 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1356 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1357 do_print(PL_formtarget, ofp);
1358 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1359 sv_chop(PL_formtarget, s);
1360 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1361 }
1362 }
a0d0e21e 1363 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1364 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1365 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1366 IoPAGE(io)++;
3280af22 1367 PL_formtarget = PL_toptarget;
748a9306 1368 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1369 fgv = IoTOP_GV(io);
1370 if (!fgv)
cea2e8a9 1371 DIE(aTHX_ "bad top format reference");
4633a7c4 1372 cv = GvFORM(fgv);
1df70142
AL		 1373 if (!cv) {
1374 SV * const sv = sv_newmortal();
b464bac0 1375 const char *name;
bd61b366 1376 gv_efullname4(sv, fgv, NULL, FALSE);
e62f0680 1377 name = SvPV_nolen_const(sv);
2dd78f96 1378 if (name && *name)
0e528f24
JH		 1379 DIE(aTHX_ "Undefined top format \"%s\" called", name);
1380 else
1381 DIE(aTHX_ "Undefined top format called");
4633a7c4 1382 }
0e528f24 1383 if (cv && CvCLONE(cv))
44a8e56a 1384 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
0e528f24 1385 return doform(cv, gv, PL_op);
a0d0e21e
LW		 1386 }
1387
1388 forget_top:
3280af22 1389 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1390 POPFORMAT(cx);
1391 LEAVE;
1392
1393 fp = IoOFP(io);
1394 if (!fp) {
599cee73 1395 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1396 if (IoIFP(io))
1397 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1398 else if (ckWARN(WARN_CLOSED))
bc37a18f 1399 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1400 }
3280af22 1401 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1402 }
1403 else {
3280af22 1404 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1405 if (ckWARN(WARN_IO))
9014280d 1406 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1407 }
d75029d0 1408 if (!do_print(PL_formtarget, fp))
3280af22 1409 PUSHs(&PL_sv_no);
a0d0e21e 1410 else {
3280af22
NIS		 1411 FmLINES(PL_formtarget) = 0;
1412 SvCUR_set(PL_formtarget, 0);
1413 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1414 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1415 (void)PerlIO_flush(fp);
3280af22 1416 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1417 }
1418 }
9cbac4c7 1419 /* bad_ofp: */
3280af22 1420 PL_formtarget = PL_bodytarget;
a0d0e21e 1421 PUTBACK;
29033a8a
SH		 1422 PERL_UNUSED_VAR(newsp);
1423 PERL_UNUSED_VAR(gimme);
f39bc417 1424 return cx->blk_sub.retop;
a0d0e21e
LW		 1425}
1426
1427PP(pp_prtf)
1428{
27da23d5 1429 dVAR; dSP; dMARK; dORIGMARK;
a0d0e21e 1430 IO *io;
760ac839 1431 PerlIO *fp;
26db47c4 1432 SV *sv;
46fc3d4c 1433 MAGIC *mg;
a0d0e21e 1434
c4420975 1435 GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv;
46fc3d4c 1436
5b468f54
AMS		 1437 if (gv && (io = GvIO(gv))
1438 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1439 {
46fc3d4c 1440 if (MARK == ORIGMARK) {
4352c267 1441 MEXTEND(SP, 1);
46fc3d4c 1442 ++MARK;
1443 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1444 ++SP;
1445 }
1446 PUSHMARK(MARK - 1);
5b468f54 1447 *MARK = SvTIED_obj((SV*)io, mg);
46fc3d4c 1448 PUTBACK;
1449 ENTER;
864dbfa3 1450 call_method("PRINTF", G_SCALAR);
46fc3d4c 1451 LEAVE;
1452 SPAGAIN;
1453 MARK = ORIGMARK + 1;
1454 *MARK = *SP;
1455 SP = MARK;
1456 RETURN;
1457 }
1458
561b68a9 1459 sv = newSV(0);
a0d0e21e 1460 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1461 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1462 report_evil_fh(gv, io, PL_op->op_type);
93189314 1463 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1464 goto just_say_no;
1465 }
1466 else if (!(fp = IoOFP(io))) {
599cee73 1467 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1468 if (IoIFP(io))
1469 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1470 else if (ckWARN(WARN_CLOSED))
bc37a18f 1471 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1472 }
93189314 1473 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1474 goto just_say_no;
1475 }
1476 else {
1477 do_sprintf(sv, SP - MARK, MARK + 1);
1478 if (!do_print(sv, fp))
1479 goto just_say_no;
1480
1481 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1482 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1483 goto just_say_no;
1484 }
1485 SvREFCNT_dec(sv);
1486 SP = ORIGMARK;
3280af22 1487 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1488 RETURN;
1489
1490 just_say_no:
1491 SvREFCNT_dec(sv);
1492 SP = ORIGMARK;
3280af22 1493 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1494 RETURN;
1495}
1496
c07a80fd 1497PP(pp_sysopen)
1498{
97aff369 1499 dVAR;
39644a26 1500 dSP;
1df70142
AL		 1501 const int perm = (MAXARG > 3) ? POPi : 0666;
1502 const int mode = POPi;
1b6737cc
AL		 1503 SV * const sv = POPs;
1504 GV * const gv = (GV *)POPs;
1505 STRLEN len;
c07a80fd 1506
4592e6ca 1507 /* Need TIEHANDLE method ? */
1b6737cc 1508 const char * const tmps = SvPV_const(sv, len);
e62f0680 1509 /* FIXME? do_open should do const */
4608196e 1510 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1511 IoLINES(GvIOp(gv)) = 0;
3280af22 1512 PUSHs(&PL_sv_yes);
c07a80fd 1513 }
1514 else {
3280af22 1515 PUSHs(&PL_sv_undef);
c07a80fd 1516 }
1517 RETURN;
1518}
1519
a0d0e21e
LW		 1520PP(pp_sysread)
1521{
27da23d5 1522 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1523 int offset;
a0d0e21e
LW		 1524 IO *io;
1525 char *buffer;
5b54f415 1526 SSize_t length;
eb5c063a 1527 SSize_t count;
1e422769 1528 Sock_size_t bufsize;
748a9306 1529 SV *bufsv;
a0d0e21e 1530 STRLEN blen;
eb5c063a 1531 int fp_utf8;
1dd30107
NC		 1532 int buffer_utf8;
1533 SV *read_target;
eb5c063a
NIS		 1534 Size_t got = 0;
1535 Size_t wanted;
1d636c13 1536 bool charstart = FALSE;
87330c3c
JH		 1537 STRLEN charskip = 0;
1538 STRLEN skip = 0;
a0d0e21e 1539
1b6737cc 1540 GV * const gv = (GV*)*++MARK;
5b468f54 1541 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1542 && gv && (io = GvIO(gv)) )
137443ea 1543 {
1b6737cc
AL		 1544 const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1545 if (mg) {
1546 SV *sv;
1547 PUSHMARK(MARK-1);
1548 *MARK = SvTIED_obj((SV*)io, mg);
1549 ENTER;
1550 call_method("READ", G_SCALAR);
1551 LEAVE;
1552 SPAGAIN;
1553 sv = POPs;
1554 SP = ORIGMARK;
1555 PUSHs(sv);
1556 RETURN;
1557 }
2ae324a7 1558 }
1559
a0d0e21e
LW		 1560 if (!gv)
1561 goto say_undef;
748a9306 1562 bufsv = *++MARK;
ff68c719 1563 if (! SvOK(bufsv))
1564 sv_setpvn(bufsv, "", 0);
a0d0e21e 1565 length = SvIVx(*++MARK);
748a9306 1566 SETERRNO(0,0);
a0d0e21e
LW		 1567 if (MARK < SP)
1568 offset = SvIVx(*++MARK);
1569 else
1570 offset = 0;
1571 io = GvIO(gv);
b5fe5ca2
SR		 1572 if (!io || !IoIFP(io)) {
1573 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1574 report_evil_fh(gv, io, PL_op->op_type);
1575 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1576 goto say_undef;
b5fe5ca2 1577 }
0064a8a9 1578 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1579 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1580 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1581 SvUTF8_on(bufsv);
9b9d7ce8 1582 buffer_utf8 = 0;
7d59b7e4
NIS		 1583 }
1584 else {
1585 buffer = SvPV_force(bufsv, blen);
1dd30107 1586 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4
NIS		 1587 }
1588 if (length < 0)
1589 DIE(aTHX_ "Negative length");
eb5c063a 1590 wanted = length;
7d59b7e4 1591
d0965105
JH		 1592 charstart = TRUE;
1593 charskip = 0;
87330c3c 1594 skip = 0;
d0965105 1595
a0d0e21e 1596#ifdef HAS_SOCKET
533c011a 1597 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1598 char namebuf[MAXPATHLEN];
17a8c7ba 1599#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
490ab354
JH		 1600 bufsize = sizeof (struct sockaddr_in);
1601#else
46fc3d4c 1602 bufsize = sizeof namebuf;
490ab354 1603#endif
abf95952
IZ		 1604#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1605 if (bufsize >= 256)
1606 bufsize = 255;
1607#endif
eb160463 1608 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1609 /* 'offset' means 'flags' here */
eb5c063a 1610 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
46fc3d4c 1611 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1612 if (count < 0)
a0d0e21e 1613 RETPUSHUNDEF;
4107cc59
OF		 1614#ifdef EPOC
1615 /* Bogus return without padding */
1616 bufsize = sizeof (struct sockaddr_in);
1617#endif
eb5c063a 1618 SvCUR_set(bufsv, count);
748a9306
LW		 1619 *SvEND(bufsv) = '\0';
1620 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1621 if (fp_utf8)
1622 SvUTF8_on(bufsv);
748a9306 1623 SvSETMAGIC(bufsv);
aac0dd9a 1624 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1625 if (!(IoFLAGS(io) & IOf_UNTAINT))
1626 SvTAINTED_on(bufsv);
a0d0e21e 1627 SP = ORIGMARK;
46fc3d4c 1628 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1629 PUSHs(TARG);
1630 RETURN;
1631 }
1632#else
911d147d 1633 if (PL_op->op_type == OP_RECV)
cea2e8a9 1634 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1635#endif
eb5c063a
NIS		 1636 if (DO_UTF8(bufsv)) {
1637 /* offset adjust in characters not bytes */
1638 blen = sv_len_utf8(bufsv);
7d59b7e4 1639 }
bbce6d69 1640 if (offset < 0) {
eb160463 1641 if (-offset > (int)blen)
cea2e8a9 1642 DIE(aTHX_ "Offset outside string");
bbce6d69 1643 offset += blen;
1644 }
eb5c063a
NIS		 1645 if (DO_UTF8(bufsv)) {
1646 /* convert offset-as-chars to offset-as-bytes */
6960c29a
CH		 1647 if (offset >= (int)blen)
1648 offset += SvCUR(bufsv) - blen;
1649 else
1650 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS		 1651 }
1652 more_bytes:
cd52b7b2 1653 bufsize = SvCUR(bufsv);
1dd30107
NC		 1654 /* Allocating length + offset + 1 isn't perfect in the case of reading
1655 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1656 unduly.
1657 (should be 2 * length + offset + 1, or possibly something longer if
1658 PL_encoding is true) */
eb160463 1659 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
27da23d5 1660 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
cd52b7b2 1661 Zero(buffer+bufsize, offset-bufsize, char);
1662 }
eb5c063a 1663 buffer = buffer + offset;
1dd30107
NC		 1664 if (!buffer_utf8) {
1665 read_target = bufsv;
1666 } else {
1667 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1668 concatenate it to the current buffer. */
1669
1670 /* Truncate the existing buffer to the start of where we will be
1671 reading to: */
1672 SvCUR_set(bufsv, offset);
1673
1674 read_target = sv_newmortal();
862a34c6 1675 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1676 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1677 }
eb5c063a 1678
533c011a 1679 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1680#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1681 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1682 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1683 buffer, length, 0);
a7092146
GS		 1684 }
1685 else
1686#endif
1687 {
eb5c063a
NIS		 1688 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1689 buffer, length);
a7092146 1690 }
a0d0e21e
LW		 1691 }
1692 else
1693#ifdef HAS_SOCKET__bad_code_maybe
50952442 1694 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1695 char namebuf[MAXPATHLEN];
490ab354
JH		 1696#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1697 bufsize = sizeof (struct sockaddr_in);
1698#else
46fc3d4c 1699 bufsize = sizeof namebuf;
490ab354 1700#endif
eb5c063a 1701 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1702 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1703 }
1704 else
1705#endif
3b02c43c 1706 {
eb5c063a
NIS		 1707 count = PerlIO_read(IoIFP(io), buffer, length);
1708 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1709 if (count == 0 && PerlIO_error(IoIFP(io)))
1710 count = -1;
3b02c43c 1711 }
eb5c063a 1712 if (count < 0) {
a00b5bd3 1713 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
6e6ef6b2 1714 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
a0d0e21e 1715 goto say_undef;
af8c498a 1716 }
aa07b2f6 1717 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1718 *SvEND(read_target) = '\0';
1719 (void)SvPOK_only(read_target);
0064a8a9 1720 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1721 /* Look at utf8 we got back and count the characters */
1df70142 1722 const char *bend = buffer + count;
eb5c063a 1723 while (buffer < bend) {
d0965105
JH		 1724 if (charstart) {
1725 skip = UTF8SKIP(buffer);
1726 charskip = 0;
1727 }
1728 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1729 /* partial character - try for rest of it */
1730 length = skip - (bend-buffer);
aa07b2f6 1731 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1732 charstart = FALSE;
1733 charskip += count;
eb5c063a
NIS		 1734 goto more_bytes;
1735 }
1736 else {
1737 got++;
1738 buffer += skip;
d0965105
JH		 1739 charstart = TRUE;
1740 charskip = 0;
eb5c063a
NIS		 1741 }
1742 }
1743 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1744 provided amount read (count) was what was requested (length)
1745 */
1746 if (got < wanted && count == length) {
d0965105 1747 length = wanted - got;
aa07b2f6 1748 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1749 goto more_bytes;
1750 }
1751 /* return value is character count */
1752 count = got;
1753 SvUTF8_on(bufsv);
1754 }
1dd30107
NC		 1755 else if (buffer_utf8) {
1756 /* Let svcatsv upgrade the bytes we read in to utf8.
1757 The buffer is a mortal so will be freed soon. */
1758 sv_catsv_nomg(bufsv, read_target);
1759 }
748a9306 1760 SvSETMAGIC(bufsv);
aac0dd9a 1761 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1762 if (!(IoFLAGS(io) & IOf_UNTAINT))
1763 SvTAINTED_on(bufsv);
a0d0e21e 1764 SP = ORIGMARK;
eb5c063a 1765 PUSHi(count);
a0d0e21e
LW		 1766 RETURN;
1767
1768 say_undef:
1769 SP = ORIGMARK;
1770 RETPUSHUNDEF;
1771}
1772
a0d0e21e
LW		 1773PP(pp_send)
1774{
27da23d5 1775 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1776 IO *io;
748a9306 1777 SV *bufsv;
83003860 1778 const char *buffer;
64a1bc8e 1779 Size_t length = 0;
8c99d73e 1780 SSize_t retval;
a0d0e21e 1781 STRLEN blen;
1d603a67 1782 MAGIC *mg;
64a1bc8e
NC		 1783 const int op_type = PL_op->op_type;
1784
7452cf6a 1785 GV *const gv = (GV*)*++MARK;
14befaf4 1786 if (PL_op->op_type == OP_SYSWRITE
5b468f54
AMS		 1787 && gv && (io = GvIO(gv))
1788 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
14befaf4 1789 {
1d603a67 1790 SV *sv;
64a1bc8e
NC		 1791
1792 if (MARK == SP - 1) {
1793 EXTEND(SP, 1000);
1794 sv = sv_2mortal(newSViv(sv_len(*SP)));
1795 PUSHs(sv);
1796 PUTBACK;
1797 }
1d603a67 1798
64a1bc8e
NC		 1799 PUSHMARK(ORIGMARK);
1800 *(ORIGMARK+1) = SvTIED_obj((SV*)io, mg);
1d603a67 1801 ENTER;
864dbfa3 1802 call_method("WRITE", G_SCALAR);
1d603a67
GB		 1803 LEAVE;
1804 SPAGAIN;
1805 sv = POPs;
1806 SP = ORIGMARK;
1807 PUSHs(sv);
1808 RETURN;
1809 }
a0d0e21e
LW		 1810 if (!gv)
1811 goto say_undef;
64a1bc8e 1812
748a9306 1813 bufsv = *++MARK;
64a1bc8e
NC		 1814
1815 if (op_type == OP_SYSWRITE) {
1816 if (MARK >= SP) {
1817 length = (Size_t) sv_len(bufsv);
1818 } else {
8c99d73e 1819#if Size_t_size > IVSIZE
64a1bc8e 1820 length = (Size_t)SvNVx(*++MARK);
146174a9 1821#else
64a1bc8e 1822 length = (Size_t)SvIVx(*++MARK);
146174a9 1823#endif
64a1bc8e
NC		 1824 if ((SSize_t)length < 0)
1825 DIE(aTHX_ "Negative length");
1826 }
1827 }
748a9306 1828 SETERRNO(0,0);
a0d0e21e
LW		 1829 io = GvIO(gv);
1830 if (!io || !IoIFP(io)) {
8c99d73e 1831 retval = -1;
bc37a18f
RG		 1832 if (ckWARN(WARN_CLOSED))
1833 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 1834 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1835 goto say_undef;
1836 }
1837
1838 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7
NC		 1839 if (!SvUTF8(bufsv)) {
1840 bufsv = sv_2mortal(newSVsv(bufsv));
1841 buffer = sv_2pvutf8(bufsv, &blen);
1842 } else
83003860 1843 buffer = SvPV_const(bufsv, blen);
a0d0e21e 1844 }
7d59b7e4 1845 else {
4de5f5ca
JH		 1846 if (DO_UTF8(bufsv)) {
1847 /* Not modifying source SV, so making a temporary copy. */
1848 bufsv = sv_2mortal(newSVsv(bufsv));
1849 sv_utf8_downgrade(bufsv, FALSE);
1850 }
83003860 1851 buffer = SvPV_const(bufsv, blen);
7d59b7e4
NIS		 1852 }
1853
64a1bc8e 1854 if (op_type == OP_SYSWRITE) {
7d59b7e4
NIS		 1855 IV offset;
1856 if (DO_UTF8(bufsv)) {
1857 /* length and offset are in chars */
1858 blen = sv_len_utf8(bufsv);
1859 }
bbce6d69 1860 if (MARK < SP) {
a0d0e21e 1861 offset = SvIVx(*++MARK);
bbce6d69 1862 if (offset < 0) {
eb160463 1863 if (-offset > (IV)blen)
cea2e8a9 1864 DIE(aTHX_ "Offset outside string");
bbce6d69 1865 offset += blen;
eb160463 1866 } else if (offset >= (IV)blen && blen > 0)
cea2e8a9 1867 DIE(aTHX_ "Offset outside string");
bbce6d69 1868 } else
a0d0e21e
LW		 1869 offset = 0;
1870 if (length > blen - offset)
1871 length = blen - offset;
7d59b7e4 1872 if (DO_UTF8(bufsv)) {
83003860 1873 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
7d59b7e4
NIS		 1874 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1875 }
1876 else {
1877 buffer = buffer+offset;
1878 }
a7092146 1879#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1880 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1881 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1882 buffer, length, 0);
a7092146
GS		 1883 }
1884 else
1885#endif
1886 {
94e4c244 1887 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1888 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1889 buffer, length);
a7092146 1890 }
a0d0e21e
LW		 1891 }
1892#ifdef HAS_SOCKET
64a1bc8e
NC		 1893 else {
1894 const int flags = SvIVx(*++MARK);
1895 if (SP > MARK) {
1896 STRLEN mlen;
1897 char * const sockbuf = SvPVx(*++MARK, mlen);
1898 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1899 flags, (struct sockaddr *)sockbuf, mlen);
1900 }
1901 else {
1902 retval
1903 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1904 }
a0d0e21e 1905 }
a0d0e21e
LW		 1906#else
1907 else
cea2e8a9 1908 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1909#endif
8c99d73e 1910 if (retval < 0)
a0d0e21e
LW		 1911 goto say_undef;
1912 SP = ORIGMARK;
f36eea10
JH		 1913 if (DO_UTF8(bufsv))
1914 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
8c99d73e
GS		 1915#if Size_t_size > IVSIZE
1916 PUSHn(retval);
1917#else
1918 PUSHi(retval);
1919#endif
a0d0e21e
LW		 1920 RETURN;
1921
1922 say_undef:
1923 SP = ORIGMARK;
1924 RETPUSHUNDEF;
1925}
1926
a0d0e21e
LW		 1927PP(pp_eof)
1928{
27da23d5 1929 dVAR; dSP;
a0d0e21e
LW		 1930 GV *gv;
1931
32da55ab 1932 if (MAXARG == 0) {
146174a9
CB		 1933 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1934 IO *io;
ed2c6b9b 1935 gv = PL_last_in_gv = GvEGV(PL_argvgv);
146174a9
CB		 1936 io = GvIO(gv);
1937 if (io && !IoIFP(io)) {
1938 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1939 IoLINES(io) = 0;
1940 IoFLAGS(io) &= ~IOf_START;
4608196e 1941 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
146174a9
CB		 1942 sv_setpvn(GvSV(gv), "-", 1);
1943 SvSETMAGIC(GvSV(gv));
1944 }
1945 else if (!nextargv(gv))
1946 RETPUSHYES;
1947 }
1948 }
1949 else
1950 gv = PL_last_in_gv; /* eof */
1951 }
a0d0e21e 1952 else
146174a9 1953 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 1954
6136c704
AL		 1955 if (gv) {
1956 IO * const io = GvIO(gv);
1957 MAGIC * mg;
1958 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
1959 PUSHMARK(SP);
1960 XPUSHs(SvTIED_obj((SV*)io, mg));
1961 PUTBACK;
1962 ENTER;
1963 call_method("EOF", G_SCALAR);
1964 LEAVE;
1965 SPAGAIN;
1966 RETURN;
1967 }
4592e6ca
NIS		 1968 }
1969
54310121 1970 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 1971 RETURN;
1972}
1973
1974PP(pp_tell)
1975{
27da23d5 1976 dVAR; dSP; dTARGET;
301e8125 1977 GV *gv;
5b468f54 1978 IO *io;
4592e6ca 1979 MAGIC *mg;
a0d0e21e 1980
c4420975
AL		 1981 if (MAXARG != 0)
1982 PL_last_in_gv = (GV*)POPs;
1983 gv = PL_last_in_gv;
4592e6ca 1984
5b468f54
AMS		 1985 if (gv && (io = GvIO(gv))
1986 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1987 {
4592e6ca 1988 PUSHMARK(SP);
5b468f54 1989 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1990 PUTBACK;
1991 ENTER;
864dbfa3 1992 call_method("TELL", G_SCALAR);
4592e6ca
NIS		 1993 LEAVE;
1994 SPAGAIN;
1995 RETURN;
1996 }
1997
146174a9
CB		 1998#if LSEEKSIZE > IVSIZE
1999 PUSHn( do_tell(gv) );
2000#else
a0d0e21e 2001 PUSHi( do_tell(gv) );
146174a9 2002#endif
a0d0e21e
LW		 2003 RETURN;
2004}
2005
137443ea 2006PP(pp_sysseek)
2007{
27da23d5 2008 dVAR; dSP;
5b468f54 2009 IO *io;
1df70142 2010 const int whence = POPi;
146174a9 2011#if LSEEKSIZE > IVSIZE
7452cf6a 2012 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2013#else
7452cf6a 2014 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2015#endif
4592e6ca 2016 MAGIC *mg;
a0d0e21e 2017
7452cf6a 2018 GV * const gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 2019
5b468f54
AMS		 2020 if (gv && (io = GvIO(gv))
2021 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
2022 {
4592e6ca 2023 PUSHMARK(SP);
5b468f54 2024 XPUSHs(SvTIED_obj((SV*)io, mg));
cb50131a
CB		 2025#if LSEEKSIZE > IVSIZE
2026 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
2027#else
b448e4fe 2028 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 2029#endif
b448e4fe 2030 XPUSHs(sv_2mortal(newSViv(whence)));
4592e6ca
NIS		 2031 PUTBACK;
2032 ENTER;
864dbfa3 2033 call_method("SEEK", G_SCALAR);
4592e6ca
NIS		 2034 LEAVE;
2035 SPAGAIN;
2036 RETURN;
2037 }
2038
533c011a 2039 if (PL_op->op_type == OP_SEEK)
8903cb82 2040 PUSHs(boolSV(do_seek(gv, offset, whence)));
2041 else {
0bcc34c2 2042 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2043 if (sought < 0)
146174a9
CB		 2044 PUSHs(&PL_sv_undef);
2045 else {
7452cf6a 2046 SV* const sv = sought ?
146174a9 2047#if LSEEKSIZE > IVSIZE
b448e4fe 2048 newSVnv((NV)sought)
146174a9 2049#else
b448e4fe 2050 newSViv(sought)
146174a9
CB		 2051#endif
2052 : newSVpvn(zero_but_true, ZBTLEN);
2053 PUSHs(sv_2mortal(sv));
2054 }
8903cb82 2055 }
a0d0e21e
LW		 2056 RETURN;
2057}
2058
2059PP(pp_truncate)
2060{
97aff369 2061 dVAR;
39644a26 2062 dSP;
8c99d73e
GS		 2063 /* There seems to be no consensus on the length type of truncate()
2064 * and ftruncate(), both off_t and size_t have supporters. In
2065 * general one would think that when using large files, off_t is
2066 * at least as wide as size_t, so using an off_t should be okay. */
2067 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2068 Off_t len;
a0d0e21e 2069
25342a55 2070#if Off_t_size > IVSIZE
0bcc34c2 2071 len = (Off_t)POPn;
8c99d73e 2072#else
0bcc34c2 2073 len = (Off_t)POPi;
8c99d73e
GS		 2074#endif
2075 /* Checking for length < 0 is problematic as the type might or
301e8125 2076 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2077 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2078 SETERRNO(0,0);
d05c1ba0 2079 {
d05c1ba0
JH		 2080 int result = 1;
2081 GV *tmpgv;
090bf15b
SR		 2082 IO *io;
2083
d05c1ba0 2084 if (PL_op->op_flags & OPf_SPECIAL) {
f776e3cd 2085 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
d05c1ba0 2086
090bf15b
SR		 2087 do_ftruncate_gv:
2088 if (!GvIO(tmpgv))
2089 result = 0;
d05c1ba0 2090 else {
090bf15b
SR		 2091 PerlIO *fp;
2092 io = GvIOp(tmpgv);
2093 do_ftruncate_io:
2094 TAINT_PROPER("truncate");
2095 if (!(fp = IoIFP(io))) {
2096 result = 0;
2097 }
2098 else {
2099 PerlIO_flush(fp);
cbdc8872 2100#ifdef HAS_TRUNCATE
090bf15b 2101 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2102#else
090bf15b 2103 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2104#endif
090bf15b
SR		 2105 result = 0;
2106 }
d05c1ba0 2107 }
cbdc8872 2108 }
d05c1ba0 2109 else {
7452cf6a 2110 SV * const sv = POPs;
83003860 2111 const char *name;
7a5fd60d 2112
d05c1ba0
JH		 2113 if (SvTYPE(sv) == SVt_PVGV) {
2114 tmpgv = (GV*)sv; /* *main::FRED for example */
090bf15b 2115 goto do_ftruncate_gv;
d05c1ba0
JH		 2116 }
2117 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2118 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
090bf15b
SR		 2119 goto do_ftruncate_gv;
2120 }
2121 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2122 io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
2123 goto do_ftruncate_io;
d05c1ba0 2124 }
1e422769 2125
83003860 2126 name = SvPV_nolen_const(sv);
d05c1ba0 2127 TAINT_PROPER("truncate");
cbdc8872 2128#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2129 if (truncate(name, len) < 0)
2130 result = 0;
cbdc8872 2131#else
d05c1ba0 2132 {
7452cf6a 2133 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2134
7452cf6a 2135 if (tmpfd < 0)
cbdc8872 2136 result = 0;
d05c1ba0
JH		 2137 else {
2138 if (my_chsize(tmpfd, len) < 0)
2139 result = 0;
2140 PerlLIO_close(tmpfd);
2141 }
cbdc8872 2142 }
a0d0e21e 2143#endif
d05c1ba0 2144 }
a0d0e21e 2145
d05c1ba0
JH		 2146 if (result)
2147 RETPUSHYES;
2148 if (!errno)
93189314 2149 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2150 RETPUSHUNDEF;
2151 }
a0d0e21e
LW		 2152}
2153
a0d0e21e
LW		 2154PP(pp_ioctl)
2155{
97aff369 2156 dVAR; dSP; dTARGET;
7452cf6a 2157 SV * const argsv = POPs;
1df70142 2158 const unsigned int func = POPu;
e1ec3a88 2159 const int optype = PL_op->op_type;
7452cf6a 2160 GV * const gv = (GV*)POPs;
4608196e 2161 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2162 char *s;
324aa91a 2163 IV retval;
a0d0e21e 2164
748a9306 2165 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2166 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2167 report_evil_fh(gv, io, PL_op->op_type);
93189314 2168 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2169 RETPUSHUNDEF;
2170 }
2171
748a9306 2172 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2173 STRLEN len;
324aa91a 2174 STRLEN need;
748a9306 2175 s = SvPV_force(argsv, len);
324aa91a
HF		 2176 need = IOCPARM_LEN(func);
2177 if (len < need) {
2178 s = Sv_Grow(argsv, need + 1);
2179 SvCUR_set(argsv, need);
a0d0e21e
LW		 2180 }
2181
748a9306 2182 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2183 }
2184 else {
748a9306 2185 retval = SvIV(argsv);
c529f79d 2186 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2187 }
2188
ed4b2e6b 2189 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2190
2191 if (optype == OP_IOCTL)
2192#ifdef HAS_IOCTL
76e3520e 2193 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2194#else
cea2e8a9 2195 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2196#endif
2197 else
c214f4ad
WB		 2198#ifndef HAS_FCNTL
2199 DIE(aTHX_ "fcntl is not implemented");
2200#else
55497cff 2201#if defined(OS2) && defined(__EMX__)
760ac839 2202 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2203#else
760ac839 2204 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2205#endif
6652bd42 2206#endif
a0d0e21e 2207
6652bd42 2208#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2209 if (SvPOK(argsv)) {
2210 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2211 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2212 OP_NAME(PL_op));
748a9306
LW		 2213 s[SvCUR(argsv)] = 0; /* put our null back */
2214 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2215 }
2216
2217 if (retval == -1)
2218 RETPUSHUNDEF;
2219 if (retval != 0) {
2220 PUSHi(retval);
2221 }
2222 else {
8903cb82 2223 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2224 }
4808266b 2225#endif
c214f4ad 2226 RETURN;
a0d0e21e
LW		 2227}
2228
2229PP(pp_flock)
2230{
9cad6237 2231#ifdef FLOCK
97aff369 2232 dVAR; dSP; dTARGET;
a0d0e21e 2233 I32 value;
bc37a18f 2234 IO *io = NULL;
760ac839 2235 PerlIO *fp;
7452cf6a
AL		 2236 const int argtype = POPi;
2237 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
16d20bd9 2238
bc37a18f
RG		 2239 if (gv && (io = GvIO(gv)))
2240 fp = IoIFP(io);
2241 else {
4608196e 2242 fp = NULL;
bc37a18f
RG		 2243 io = NULL;
2244 }
0bcc34c2 2245 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2246 if (fp) {
68dc0745 2247 (void)PerlIO_flush(fp);
76e3520e 2248 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2249 }
cb50131a 2250 else {
bc37a18f
RG		 2251 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2252 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2253 value = 0;
93189314 2254 SETERRNO(EBADF,RMS_IFI);
cb50131a 2255 }
a0d0e21e
LW		 2256 PUSHi(value);
2257 RETURN;
2258#else
cea2e8a9 2259 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2260#endif
2261}
2262
2263/* Sockets. */
2264
2265PP(pp_socket)
2266{
a0d0e21e 2267#ifdef HAS_SOCKET
97aff369 2268 dVAR; dSP;
7452cf6a
AL		 2269 const int protocol = POPi;
2270 const int type = POPi;
2271 const int domain = POPi;
2272 GV * const gv = (GV*)POPs;
2273 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e
LW		 2274 int fd;
2275
c289d2f7
JH		 2276 if (!gv || !io) {
2277 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2278 report_evil_fh(gv, io, PL_op->op_type);
5ee74a84 2279 if (io && IoIFP(io))
c289d2f7 2280 do_close(gv, FALSE);
93189314 2281 SETERRNO(EBADF,LIB_INVARG);
a0d0e21e
LW		 2282 RETPUSHUNDEF;
2283 }
2284
57171420
BS		 2285 if (IoIFP(io))
2286 do_close(gv, FALSE);
2287
a0d0e21e 2288 TAINT_PROPER("socket");
6ad3d225 2289 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2290 if (fd < 0)
2291 RETPUSHUNDEF;
460c8493
IZ		 2292 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2293 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2294 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2295 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2296 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2297 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2298 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2299 RETPUSHUNDEF;
2300 }
8d2a6795
GS		 2301#if defined(HAS_FCNTL) && defined(F_SETFD)
2302 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2303#endif
a0d0e21e 2304
d5ff79b3
OF		 2305#ifdef EPOC
2306 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2307#endif
2308
a0d0e21e
LW		 2309 RETPUSHYES;
2310#else
cea2e8a9 2311 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2312#endif
2313}
2314
2315PP(pp_sockpair)
2316{
c95c94b1 2317#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2318 dVAR; dSP;
7452cf6a
AL		 2319 const int protocol = POPi;
2320 const int type = POPi;
2321 const int domain = POPi;
2322 GV * const gv2 = (GV*)POPs;
2323 GV * const gv1 = (GV*)POPs;
2324 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2325 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
a0d0e21e
LW		 2326 int fd[2];
2327
c289d2f7
JH		 2328 if (!gv1 || !gv2 || !io1 || !io2) {
2329 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2330 if (!gv1 || !io1)
2331 report_evil_fh(gv1, io1, PL_op->op_type);
2332 if (!gv2 || !io2)
2333 report_evil_fh(gv1, io2, PL_op->op_type);
2334 }
5ee74a84 2335 if (io1 && IoIFP(io1))
c289d2f7 2336 do_close(gv1, FALSE);
5ee74a84 2337 if (io2 && IoIFP(io2))
c289d2f7 2338 do_close(gv2, FALSE);
a0d0e21e 2339 RETPUSHUNDEF;
c289d2f7 2340 }
a0d0e21e 2341
dc0d0a5f
JH		 2342 if (IoIFP(io1))
2343 do_close(gv1, FALSE);
2344 if (IoIFP(io2))
2345 do_close(gv2, FALSE);
57171420 2346
a0d0e21e 2347 TAINT_PROPER("socketpair");
6ad3d225 2348 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2349 RETPUSHUNDEF;
460c8493
IZ		 2350 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2351 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2352 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ		 2353 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2354 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2355 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2356 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2357 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2358 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2359 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2360 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2361 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2362 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2363 RETPUSHUNDEF;
2364 }
8d2a6795
GS		 2365#if defined(HAS_FCNTL) && defined(F_SETFD)
2366 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2367 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2368#endif
a0d0e21e
LW		 2369
2370 RETPUSHYES;
2371#else
cea2e8a9 2372 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2373#endif
2374}
2375
2376PP(pp_bind)
2377{
a0d0e21e 2378#ifdef HAS_SOCKET
97aff369 2379 dVAR; dSP;
7452cf6a 2380 SV * const addrsv = POPs;
349d4f2f
NC		 2381 /* OK, so on what platform does bind modify addr? */
2382 const char *addr;
7452cf6a
AL		 2383 GV * const gv = (GV*)POPs;
2384 register IO * const io = GvIOn(gv);
a0d0e21e 2385 STRLEN len;
eec2d3df 2386 int bind_ok = 0;
a0d0e21e
LW		 2387
2388 if (!io || !IoIFP(io))
2389 goto nuts;
2390
349d4f2f 2391 addr = SvPV_const(addrsv, len);
a0d0e21e 2392 TAINT_PROPER("bind");
eec2d3df
GS		 2393 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2394 (struct sockaddr *)addr, len) >= 0)
2395 bind_ok = 1;
2396
eec2d3df
GS		 2397
2398 if (bind_ok)
a0d0e21e
LW		 2399 RETPUSHYES;
2400 else
2401 RETPUSHUNDEF;
2402
2403nuts:
599cee73 2404 if (ckWARN(WARN_CLOSED))
bc37a18f 2405 report_evil_fh(gv, io, PL_op->op_type);
93189314 2406 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2407 RETPUSHUNDEF;
2408#else
cea2e8a9 2409 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2410#endif
2411}
2412
2413PP(pp_connect)
2414{
a0d0e21e 2415#ifdef HAS_SOCKET
97aff369 2416 dVAR; dSP;
7452cf6a
AL		 2417 SV * const addrsv = POPs;
2418 GV * const gv = (GV*)POPs;
2419 register IO * const io = GvIOn(gv);
349d4f2f 2420 const char *addr;
a0d0e21e
LW		 2421 STRLEN len;
2422
2423 if (!io || !IoIFP(io))
2424 goto nuts;
2425
349d4f2f 2426 addr = SvPV_const(addrsv, len);
a0d0e21e 2427 TAINT_PROPER("connect");
6ad3d225 2428 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2429 RETPUSHYES;
2430 else
2431 RETPUSHUNDEF;
2432
2433nuts:
599cee73 2434 if (ckWARN(WARN_CLOSED))
bc37a18f 2435 report_evil_fh(gv, io, PL_op->op_type);
93189314 2436 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2437 RETPUSHUNDEF;
2438#else
cea2e8a9 2439 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2440#endif
2441}
2442
2443PP(pp_listen)
2444{
a0d0e21e 2445#ifdef HAS_SOCKET
97aff369 2446 dVAR; dSP;
7452cf6a
AL		 2447 const int backlog = POPi;
2448 GV * const gv = (GV*)POPs;
2449 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2450
c289d2f7 2451 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2452 goto nuts;
2453
6ad3d225 2454 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2455 RETPUSHYES;
2456 else
2457 RETPUSHUNDEF;
2458
2459nuts:
599cee73 2460 if (ckWARN(WARN_CLOSED))
bc37a18f 2461 report_evil_fh(gv, io, PL_op->op_type);
93189314 2462 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2463 RETPUSHUNDEF;
2464#else
cea2e8a9 2465 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2466#endif
2467}
2468
2469PP(pp_accept)
2470{
a0d0e21e 2471#ifdef HAS_SOCKET
97aff369 2472 dVAR; dSP; dTARGET;
a0d0e21e
LW		 2473 register IO *nstio;
2474 register IO *gstio;
93d47a36
JH		 2475 char namebuf[MAXPATHLEN];
2476#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2477 Sock_size_t len = sizeof (struct sockaddr_in);
2478#else
2479 Sock_size_t len = sizeof namebuf;
2480#endif
7452cf6a
AL		 2481 GV * const ggv = (GV*)POPs;
2482 GV * const ngv = (GV*)POPs;
a0d0e21e
LW		 2483 int fd;
2484
a0d0e21e
LW		 2485 if (!ngv)
2486 goto badexit;
2487 if (!ggv)
2488 goto nuts;
2489
2490 gstio = GvIO(ggv);
2491 if (!gstio || !IoIFP(gstio))
2492 goto nuts;
2493
2494 nstio = GvIOn(ngv);
93d47a36 2495 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
a0d0e21e
LW		 2496 if (fd < 0)
2497 goto badexit;
a70048fb
AB		 2498 if (IoIFP(nstio))
2499 do_close(ngv, FALSE);
460c8493
IZ		 2500 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2501 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2502 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2503 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2504 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2505 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2506 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2507 goto badexit;
2508 }
8d2a6795
GS		 2509#if defined(HAS_FCNTL) && defined(F_SETFD)
2510 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2511#endif
a0d0e21e 2512
ed79a026 2513#ifdef EPOC
93d47a36 2514 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
a9f1f6b0 2515 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026 2516#endif
381c1bae 2517#ifdef __SCO_VERSION__
93d47a36 2518 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2519#endif
ed79a026 2520
93d47a36 2521 PUSHp(namebuf, len);
a0d0e21e
LW		 2522 RETURN;
2523
2524nuts:
599cee73 2525 if (ckWARN(WARN_CLOSED))
bc37a18f 2526 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
93189314 2527 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2528
2529badexit:
2530 RETPUSHUNDEF;
2531
2532#else
cea2e8a9 2533 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2534#endif
2535}
2536
2537PP(pp_shutdown)
2538{
a0d0e21e 2539#ifdef HAS_SOCKET
97aff369 2540 dVAR; dSP; dTARGET;
7452cf6a
AL		 2541 const int how = POPi;
2542 GV * const gv = (GV*)POPs;
2543 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 2544
2545 if (!io || !IoIFP(io))
2546 goto nuts;
2547
6ad3d225 2548 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2549 RETURN;
2550
2551nuts:
599cee73 2552 if (ckWARN(WARN_CLOSED))
bc37a18f 2553 report_evil_fh(gv, io, PL_op->op_type);
93189314 2554 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2555 RETPUSHUNDEF;
2556#else
cea2e8a9 2557 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2558#endif
2559}
2560
a0d0e21e
LW		 2561PP(pp_ssockopt)
2562{
a0d0e21e 2563#ifdef HAS_SOCKET
97aff369 2564 dVAR; dSP;
7452cf6a 2565 const int optype = PL_op->op_type;
561b68a9 2566 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2567 const unsigned int optname = (unsigned int) POPi;
2568 const unsigned int lvl = (unsigned int) POPi;
2569 GV * const gv = (GV*)POPs;
2570 register IO * const io = GvIOn(gv);
a0d0e21e 2571 int fd;
1e422769 2572 Sock_size_t len;
a0d0e21e 2573
a0d0e21e
LW		 2574 if (!io || !IoIFP(io))
2575 goto nuts;
2576
760ac839 2577 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2578 switch (optype) {
2579 case OP_GSOCKOPT:
748a9306 2580 SvGROW(sv, 257);
a0d0e21e 2581 (void)SvPOK_only(sv);
748a9306
LW		 2582 SvCUR_set(sv,256);
2583 *SvEND(sv) ='\0';
1e422769 2584 len = SvCUR(sv);
6ad3d225 2585 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2586 goto nuts2;
1e422769 2587 SvCUR_set(sv, len);
748a9306 2588 *SvEND(sv) ='\0';
a0d0e21e
LW		 2589 PUSHs(sv);
2590 break;
2591 case OP_SSOCKOPT: {
1215b447
JH		 2592#if defined(__SYMBIAN32__)
2593# define SETSOCKOPT_OPTION_VALUE_T void *
2594#else
2595# define SETSOCKOPT_OPTION_VALUE_T const char *
2596#endif
2597 /* XXX TODO: We need to have a proper type (a Configure probe,
2598 * etc.) for what the C headers think of the third argument of
2599 * setsockopt(), the option_value read-only buffer: is it
2600 * a "char *", or a "void *", const or not. Some compilers
2601 * don't take kindly to e.g. assuming that "char *" implicitly
2602 * promotes to a "void *", or to explicitly promoting/demoting
2603 * consts to non/vice versa. The "const void *" is the SUS
2604 * definition, but that does not fly everywhere for the above
2605 * reasons. */
2606 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769 2607 int aint;
2608 if (SvPOKp(sv)) {
2d8e6c8d 2609 STRLEN l;
1215b447 2610 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2611 len = l;
1e422769 2612 }
56ee1660 2613 else {
a0d0e21e 2614 aint = (int)SvIV(sv);
1215b447 2615 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2616 len = sizeof(int);
2617 }
6ad3d225 2618 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2619 goto nuts2;
3280af22 2620 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2621 }
2622 break;
2623 }
2624 RETURN;
2625
2626nuts:
599cee73 2627 if (ckWARN(WARN_CLOSED))
bc37a18f 2628 report_evil_fh(gv, io, optype);
93189314 2629 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2630nuts2:
2631 RETPUSHUNDEF;
2632
2633#else
af51a00e 2634 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2635#endif
2636}
2637
a0d0e21e
LW		 2638PP(pp_getpeername)
2639{
a0d0e21e 2640#ifdef HAS_SOCKET
97aff369 2641 dVAR; dSP;
7452cf6a
AL		 2642 const int optype = PL_op->op_type;
2643 GV * const gv = (GV*)POPs;
2644 register IO * const io = GvIOn(gv);
2645 Sock_size_t len;
a0d0e21e
LW		 2646 SV *sv;
2647 int fd;
a0d0e21e
LW		 2648
2649 if (!io || !IoIFP(io))
2650 goto nuts;
2651
561b68a9 2652 sv = sv_2mortal(newSV(257));
748a9306 2653 (void)SvPOK_only(sv);
1e422769 2654 len = 256;
2655 SvCUR_set(sv, len);
748a9306 2656 *SvEND(sv) ='\0';
760ac839 2657 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2658 switch (optype) {
2659 case OP_GETSOCKNAME:
6ad3d225 2660 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2661 goto nuts2;
2662 break;
2663 case OP_GETPEERNAME:
6ad3d225 2664 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2665 goto nuts2;
490ab354
JH		 2666#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2667 {
2668 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";
2669 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2670 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2671 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2672 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2673 goto nuts2;
490ab354
JH		 2674 }
2675 }
2676#endif
a0d0e21e
LW		 2677 break;
2678 }
13826f2c
CS		 2679#ifdef BOGUS_GETNAME_RETURN
2680 /* Interactive Unix, getpeername() and getsockname()
2681 does not return valid namelen */
1e422769 2682 if (len == BOGUS_GETNAME_RETURN)
2683 len = sizeof(struct sockaddr);
13826f2c 2684#endif
1e422769 2685 SvCUR_set(sv, len);
748a9306 2686 *SvEND(sv) ='\0';
a0d0e21e
LW		 2687 PUSHs(sv);
2688 RETURN;
2689
2690nuts:
599cee73 2691 if (ckWARN(WARN_CLOSED))
bc37a18f 2692 report_evil_fh(gv, io, optype);
93189314 2693 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2694nuts2:
2695 RETPUSHUNDEF;
2696
2697#else
af51a00e 2698 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2699#endif
2700}
2701
2702/* Stat calls. */
2703
a0d0e21e
LW		 2704PP(pp_stat)
2705{
97aff369 2706 dVAR;
39644a26 2707 dSP;
2dd78f96 2708 GV *gv;
54310121 2709 I32 gimme;
a0d0e21e
LW		 2710 I32 max = 13;
2711
533c011a 2712 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2713 gv = cGVOP_gv;
8a4e5b40 2714 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2715 if (gv != PL_defgv) {
5d329e6e 2716 do_fstat_warning_check:
5d3e98de 2717 if (ckWARN(WARN_IO))
9014280d 2718 Perl_warner(aTHX_ packWARN(WARN_IO),
5d3e98de
RGS		 2719 "lstat() on filehandle %s", GvENAME(gv));
2720 } else if (PL_laststype != OP_LSTAT)
8a4e5b40 2721 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2722 }
2723
748a9306 2724 do_fstat:
2dd78f96 2725 if (gv != PL_defgv) {
3280af22 2726 PL_laststype = OP_STAT;
2dd78f96 2727 PL_statgv = gv;
c69006e4 2728 sv_setpvn(PL_statname, "", 0);
2dd78f96
JH		 2729 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2730 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
a0d0e21e 2731 }
9ddeeac9 2732 if (PL_laststatval < 0) {
2dd78f96
JH		 2733 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2734 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2735 max = 0;
9ddeeac9 2736 }
a0d0e21e
LW		 2737 }
2738 else {
7452cf6a 2739 SV* const sv = POPs;
748a9306 2740 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2741 gv = (GV*)sv;
748a9306
LW		 2742 goto do_fstat;
2743 }
2744 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 2745 gv = (GV*)SvRV(sv);
5d329e6e
NC		 2746 if (PL_op->op_type == OP_LSTAT)
2747 goto do_fstat_warning_check;
748a9306
LW		 2748 goto do_fstat;
2749 }
0510663f 2750 sv_setpv(PL_statname, SvPV_nolen_const(sv));
a0714e2c 2751 PL_statgv = NULL;
533c011a
NIS		 2752 PL_laststype = PL_op->op_type;
2753 if (PL_op->op_type == OP_LSTAT)
0510663f 2754 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2755 else
0510663f 2756 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2757 if (PL_laststatval < 0) {
0510663f 2758 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
9014280d 2759 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW		 2760 max = 0;
2761 }
2762 }
2763
54310121 2764 gimme = GIMME_V;
2765 if (gimme != G_ARRAY) {
2766 if (gimme != G_VOID)
2767 XPUSHs(boolSV(max));
2768 RETURN;
a0d0e21e
LW		 2769 }
2770 if (max) {
36477c24 2771 EXTEND(SP, max);
2772 EXTEND_MORTAL(max);
1ff81528
PL		 2773 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2774 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2775 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2776 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2777#if Uid_t_size > IVSIZE
2778 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2779#else
23dcd6c8 2780# if Uid_t_sign <= 0
1ff81528 2781 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2782# else
2783 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2784# endif
146174a9 2785#endif
301e8125 2786#if Gid_t_size > IVSIZE
146174a9
CB		 2787 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2788#else
23dcd6c8 2789# if Gid_t_sign <= 0
1ff81528 2790 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2791# else
2792 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2793# endif
146174a9 2794#endif
cbdc8872 2795#ifdef USE_STAT_RDEV
1ff81528 2796 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2797#else
396482e1 2798 PUSHs(sv_2mortal(newSVpvs("")));
cbdc8872 2799#endif
146174a9 2800#if Off_t_size > IVSIZE
4a9d6100 2801 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
146174a9 2802#else
1ff81528 2803 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2804#endif
cbdc8872 2805#ifdef BIG_TIME
172ae379
JH		 2806 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2807 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2808 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2809#else
1ff81528
PL		 2810 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2811 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2812 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
cbdc8872 2813#endif
a0d0e21e 2814#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2815 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2816 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2817#else
396482e1
GA		 2818 PUSHs(sv_2mortal(newSVpvs("")));
2819 PUSHs(sv_2mortal(newSVpvs("")));
a0d0e21e
LW		 2820#endif
2821 }
2822 RETURN;
2823}
2824
fbb0b3b3
RGS		 2825/* This macro is used by the stacked filetest operators :
2826 * if the previous filetest failed, short-circuit and pass its value.
2827 * Else, discard it from the stack and continue. --rgs
2828 */
2829#define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2830 if (TOPs == &PL_sv_no || TOPs == &PL_sv_undef) { RETURN; } \
2831 else { (void)POPs; PUTBACK; } \
2832 }
2833
a0d0e21e
LW		 2834PP(pp_ftrread)
2835{
97aff369 2836 dVAR;
9cad6237 2837 I32 result;
af9e49b4
NC		 2838 /* Not const, because things tweak this below. Not bool, because there's
2839 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2840#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2841 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2842 /* Giving some sort of initial value silences compilers. */
2843# ifdef R_OK
2844 int access_mode = R_OK;
2845# else
2846 int access_mode = 0;
2847# endif
5ff3f7a4 2848#else
af9e49b4
NC		 2849 /* access_mode is never used, but leaving use_access in makes the
2850 conditional compiling below much clearer. */
2851 I32 use_access = 0;
5ff3f7a4 2852#endif
af9e49b4 2853 int stat_mode = S_IRUSR;
a0d0e21e 2854
af9e49b4 2855 bool effective = FALSE;
2a3ff820 2856 dSP;
af9e49b4 2857
fbb0b3b3 2858 STACKED_FTEST_CHECK;
af9e49b4
NC		 2859
2860 switch (PL_op->op_type) {
2861 case OP_FTRREAD:
2862#if !(defined(HAS_ACCESS) && defined(R_OK))
2863 use_access = 0;
2864#endif
2865 break;
2866
2867 case OP_FTRWRITE:
5ff3f7a4 2868#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 2869 access_mode = W_OK;
5ff3f7a4 2870#else
af9e49b4 2871 use_access = 0;
5ff3f7a4 2872#endif
af9e49b4
NC		 2873 stat_mode = S_IWUSR;
2874 break;
a0d0e21e 2875
af9e49b4 2876 case OP_FTREXEC:
5ff3f7a4 2877#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 2878 access_mode = X_OK;
5ff3f7a4 2879#else
af9e49b4 2880 use_access = 0;
5ff3f7a4 2881#endif
af9e49b4
NC		 2882 stat_mode = S_IXUSR;
2883 break;
a0d0e21e 2884
af9e49b4 2885 case OP_FTEWRITE:
faee0e31 2886#ifdef PERL_EFF_ACCESS
af9e49b4 2887 access_mode = W_OK;
5ff3f7a4 2888#endif
af9e49b4
NC		 2889 stat_mode = S_IWUSR;
2890 /* Fall through */
a0d0e21e 2891
af9e49b4
NC		 2892 case OP_FTEREAD:
2893#ifndef PERL_EFF_ACCESS
2894 use_access = 0;
2895#endif
2896 effective = TRUE;
2897 break;
2898
2899
2900 case OP_FTEEXEC:
faee0e31 2901#ifdef PERL_EFF_ACCESS
af9e49b4 2902 access_mode = W_OK;
5ff3f7a4 2903#else
af9e49b4 2904 use_access = 0;
5ff3f7a4 2905#endif
af9e49b4
NC		 2906 stat_mode = S_IXUSR;
2907 effective = TRUE;
2908 break;
2909 }
a0d0e21e 2910
af9e49b4
NC		 2911 if (use_access) {
2912#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2913 const char *const name = POPpx;
2914 if (effective) {
2915# ifdef PERL_EFF_ACCESS
2916 result = PERL_EFF_ACCESS(name, access_mode);
2917# else
2918 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
2919 OP_NAME(PL_op));
2920# endif
2921 }
2922 else {
2923# ifdef HAS_ACCESS
2924 result = access(name, access_mode);
2925# else
2926 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
2927# endif
2928 }
5ff3f7a4
GS		 2929 if (result == 0)
2930 RETPUSHYES;
2931 if (result < 0)
2932 RETPUSHUNDEF;
2933 RETPUSHNO;
af9e49b4 2934#endif
22865c03 2935 }
af9e49b4 2936
cea2e8a9 2937 result = my_stat();
22865c03 2938 SPAGAIN;
a0d0e21e
LW		 2939 if (result < 0)
2940 RETPUSHUNDEF;
af9e49b4 2941 if (cando(stat_mode, effective, &PL_statcache))
a0d0e21e
LW		 2942 RETPUSHYES;
2943 RETPUSHNO;
2944}
2945
2946PP(pp_ftis)
2947{
97aff369 2948 dVAR;
fbb0b3b3 2949 I32 result;
d7f0a2f4 2950 const int op_type = PL_op->op_type;
2a3ff820 2951 dSP;
fbb0b3b3
RGS		 2952 STACKED_FTEST_CHECK;
2953 result = my_stat();
2954 SPAGAIN;
a0d0e21e
LW		 2955 if (result < 0)
2956 RETPUSHUNDEF;
d7f0a2f4
NC		 2957 if (op_type == OP_FTIS)
2958 RETPUSHYES;
957b0e1d 2959 {
d7f0a2f4
NC		 2960 /* You can't dTARGET inside OP_FTIS, because you'll get
2961 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 2962 dTARGET;
d7f0a2f4 2963 switch (op_type) {
957b0e1d
NC		 2964 case OP_FTSIZE:
2965#if Off_t_size > IVSIZE
2966 PUSHn(PL_statcache.st_size);
2967#else
2968 PUSHi(PL_statcache.st_size);
2969#endif
2970 break;
2971 case OP_FTMTIME:
2972 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
2973 break;
2974 case OP_FTATIME:
2975 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
2976 break;
2977 case OP_FTCTIME:
2978 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
2979 break;
2980 }
2981 }
2982 RETURN;
a0d0e21e
LW		 2983}
2984
a0d0e21e
LW		 2985PP(pp_ftrowned)
2986{
97aff369 2987 dVAR;
fbb0b3b3 2988 I32 result;
2a3ff820 2989 dSP;
17ad201a
NC		 2990
2991 /* I believe that all these three are likely to be defined on most every
2992 system these days. */
2993#ifndef S_ISUID
2994 if(PL_op->op_type == OP_FTSUID)
2995 RETPUSHNO;
2996#endif
2997#ifndef S_ISGID
2998 if(PL_op->op_type == OP_FTSGID)
2999 RETPUSHNO;
3000#endif
3001#ifndef S_ISVTX
3002 if(PL_op->op_type == OP_FTSVTX)
3003 RETPUSHNO;
3004#endif
3005
fbb0b3b3
RGS		 3006 STACKED_FTEST_CHECK;
3007 result = my_stat();
3008 SPAGAIN;
a0d0e21e
LW		 3009 if (result < 0)
3010 RETPUSHUNDEF;
f1cb2d48
NC		 3011 switch (PL_op->op_type) {
3012 case OP_FTROWNED:
9ab9fa88 3013 if (PL_statcache.st_uid == PL_uid)
f1cb2d48
NC		 3014 RETPUSHYES;
3015 break;
3016 case OP_FTEOWNED:
3017 if (PL_statcache.st_uid == PL_euid)
3018 RETPUSHYES;
3019 break;
3020 case OP_FTZERO:
3021 if (PL_statcache.st_size == 0)
3022 RETPUSHYES;
3023 break;
3024 case OP_FTSOCK:
3025 if (S_ISSOCK(PL_statcache.st_mode))
3026 RETPUSHYES;
3027 break;
3028 case OP_FTCHR:
3029 if (S_ISCHR(PL_statcache.st_mode))
3030 RETPUSHYES;
3031 break;
3032 case OP_FTBLK:
3033 if (S_ISBLK(PL_statcache.st_mode))
3034 RETPUSHYES;
3035 break;
3036 case OP_FTFILE:
3037 if (S_ISREG(PL_statcache.st_mode))
3038 RETPUSHYES;
3039 break;
3040 case OP_FTDIR:
3041 if (S_ISDIR(PL_statcache.st_mode))
3042 RETPUSHYES;
3043 break;
3044 case OP_FTPIPE:
3045 if (S_ISFIFO(PL_statcache.st_mode))
3046 RETPUSHYES;
3047 break;
a0d0e21e 3048#ifdef S_ISUID
17ad201a
NC		 3049 case OP_FTSUID:
3050 if (PL_statcache.st_mode & S_ISUID)
3051 RETPUSHYES;
3052 break;
a0d0e21e 3053#endif
a0d0e21e 3054#ifdef S_ISGID
17ad201a
NC		 3055 case OP_FTSGID:
3056 if (PL_statcache.st_mode & S_ISGID)
3057 RETPUSHYES;
3058 break;
3059#endif
3060#ifdef S_ISVTX
3061 case OP_FTSVTX:
3062 if (PL_statcache.st_mode & S_ISVTX)
3063 RETPUSHYES;
3064 break;
a0d0e21e 3065#endif
17ad201a 3066 }
a0d0e21e
LW		 3067 RETPUSHNO;
3068}
3069
17ad201a 3070PP(pp_ftlink)
a0d0e21e 3071{
97aff369 3072 dVAR;
17ad201a 3073 I32 result = my_lstat();
39644a26 3074 dSP;
a0d0e21e
LW		 3075 if (result < 0)
3076 RETPUSHUNDEF;
17ad201a 3077 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e 3078 RETPUSHYES;
a0d0e21e
LW		 3079 RETPUSHNO;
3080}
3081
3082PP(pp_fttty)
3083{
97aff369 3084 dVAR;
39644a26 3085 dSP;
a0d0e21e
LW		 3086 int fd;
3087 GV *gv;
a0714e2c 3088 SV *tmpsv = NULL;
fb73857a 3089
fbb0b3b3
RGS		 3090 STACKED_FTEST_CHECK;
3091
533c011a 3092 if (PL_op->op_flags & OPf_REF)
146174a9 3093 gv = cGVOP_gv;
fb73857a 3094 else if (isGV(TOPs))
3095 gv = (GV*)POPs;
3096 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3097 gv = (GV*)SvRV(POPs);
a0d0e21e 3098 else
f776e3cd 3099 gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
fb73857a 3100
a0d0e21e 3101 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3102 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
7a5fd60d 3103 else if (tmpsv && SvOK(tmpsv)) {
349d4f2f 3104 const char *tmps = SvPV_nolen_const(tmpsv);
7a5fd60d
NC		 3105 if (isDIGIT(*tmps))
3106 fd = atoi(tmps);
3107 else
3108 RETPUSHUNDEF;
3109 }
a0d0e21e
LW		 3110 else
3111 RETPUSHUNDEF;
6ad3d225 3112 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3113 RETPUSHYES;
3114 RETPUSHNO;
3115}
3116
16d20bd9
AD		 3117#if defined(atarist) /* this will work with atariST. Configure will
3118 make guesses for other systems. */
3119# define FILE_base(f) ((f)->_base)
3120# define FILE_ptr(f) ((f)->_ptr)
3121# define FILE_cnt(f) ((f)->_cnt)
3122# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3123#endif
3124
3125PP(pp_fttext)
3126{
97aff369 3127 dVAR;
39644a26 3128 dSP;
a0d0e21e
LW		 3129 I32 i;
3130 I32 len;
3131 I32 odd = 0;
3132 STDCHAR tbuf[512];
3133 register STDCHAR *s;
3134 register IO *io;
5f05dabc 3135 register SV *sv;
3136 GV *gv;
146174a9 3137 PerlIO *fp;
a0d0e21e 3138
fbb0b3b3
RGS		 3139 STACKED_FTEST_CHECK;
3140
533c011a 3141 if (PL_op->op_flags & OPf_REF)
146174a9 3142 gv = cGVOP_gv;
5f05dabc 3143 else if (isGV(TOPs))
3144 gv = (GV*)POPs;
3145 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3146 gv = (GV*)SvRV(POPs);
3147 else
a0714e2c 3148 gv = NULL;
5f05dabc 3149
3150 if (gv) {
a0d0e21e 3151 EXTEND(SP, 1);
3280af22
NIS		 3152 if (gv == PL_defgv) {
3153 if (PL_statgv)
3154 io = GvIO(PL_statgv);
a0d0e21e 3155 else {
3280af22 3156 sv = PL_statname;
a0d0e21e
LW		 3157 goto really_filename;
3158 }
3159 }
3160 else {
3280af22
NIS		 3161 PL_statgv = gv;
3162 PL_laststatval = -1;
c69006e4 3163 sv_setpvn(PL_statname, "", 0);
3280af22 3164 io = GvIO(PL_statgv);
a0d0e21e
LW		 3165 }
3166 if (io && IoIFP(io)) {
5f05dabc 3167 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3168 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3169 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3170 if (PL_laststatval < 0)
5f05dabc 3171 RETPUSHUNDEF;
9cbac4c7 3172 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3173 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3174 RETPUSHNO;
3175 else
3176 RETPUSHYES;
9cbac4c7 3177 }
a20bf0c3 3178 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3179 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3180 if (i != EOF)
760ac839 3181 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3182 }
a20bf0c3 3183 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3184 RETPUSHYES;
a20bf0c3
JH		 3185 len = PerlIO_get_bufsiz(IoIFP(io));
3186 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3187 /* sfio can have large buffers - limit to 512 */
3188 if (len > 512)
3189 len = 512;
a0d0e21e
LW		 3190 }
3191 else {
2dd78f96 3192 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3193 gv = cGVOP_gv;
2dd78f96 3194 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3195 }
93189314 3196 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 3197 RETPUSHUNDEF;
3198 }
3199 }
3200 else {
3201 sv = POPs;
5f05dabc 3202 really_filename:
a0714e2c 3203 PL_statgv = NULL;
5c9aa243 3204 PL_laststype = OP_STAT;
d5263905 3205 sv_setpv(PL_statname, SvPV_nolen_const(sv));
aa07b2f6 3206 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
349d4f2f
NC		 3207 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3208 '\n'))
9014280d 3209 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
a0d0e21e
LW		 3210 RETPUSHUNDEF;
3211 }
146174a9
CB		 3212 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3213 if (PL_laststatval < 0) {
3214 (void)PerlIO_close(fp);
5f05dabc 3215 RETPUSHUNDEF;
146174a9 3216 }
bd61b366 3217 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
146174a9
CB		 3218 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3219 (void)PerlIO_close(fp);
a0d0e21e 3220 if (len <= 0) {
533c011a 3221 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3222 RETPUSHNO; /* special case NFS directories */
3223 RETPUSHYES; /* null file is anything */
3224 }
3225 s = tbuf;
3226 }
3227
3228 /* now scan s to look for textiness */
4633a7c4 3229 /* XXX ASCII dependent code */
a0d0e21e 3230
146174a9
CB		 3231#if defined(DOSISH) || defined(USEMYBINMODE)
3232 /* ignore trailing ^Z on short files */
3233 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3234 --len;
3235#endif
3236
a0d0e21e
LW		 3237 for (i = 0; i < len; i++, s++) {
3238 if (!*s) { /* null never allowed in text */
3239 odd += len;
3240 break;
3241 }
9d116dd7 3242#ifdef EBCDIC
301e8125 3243 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3244 odd++;
3245#else
146174a9
CB		 3246 else if (*s & 128) {
3247#ifdef USE_LOCALE
2de3dbcc 3248 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3249 continue;
3250#endif
3251 /* utf8 characters don't count as odd */
fd400ab9 3252 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3253 int ulen = UTF8SKIP(s);
3254 if (ulen < len - i) {
3255 int j;
3256 for (j = 1; j < ulen; j++) {
fd400ab9 3257 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3258 goto not_utf8;
3259 }
3260 --ulen; /* loop does extra increment */
3261 s += ulen;
3262 i += ulen;
3263 continue;
3264 }
3265 }
3266 not_utf8:
3267 odd++;
146174a9 3268 }
a0d0e21e
LW		 3269 else if (*s < 32 &&
3270 *s != '\n' && *s != '\r' && *s != '\b' &&
3271 *s != '\t' && *s != '\f' && *s != 27)
3272 odd++;
9d116dd7 3273#endif
a0d0e21e
LW		 3274 }
3275
533c011a 3276 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3277 RETPUSHNO;
3278 else
3279 RETPUSHYES;
3280}
3281
a0d0e21e
LW		 3282/* File calls. */
3283
3284PP(pp_chdir)
3285{
97aff369 3286 dVAR; dSP; dTARGET;
c445ea15 3287 const char *tmps = NULL;
9a957fbc 3288 GV *gv = NULL;
a0d0e21e 3289
c4aca7d0 3290 if( MAXARG == 1 ) {
9a957fbc 3291 SV * const sv = POPs;
d4ac975e
GA		 3292 if (PL_op->op_flags & OPf_SPECIAL) {
3293 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3294 }
3295 else if (SvTYPE(sv) == SVt_PVGV) {
c4aca7d0
GA		 3296 gv = (GV*)sv;
3297 }
3298 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
3299 gv = (GV*)SvRV(sv);
3300 }
3301 else {
3302 tmps = SvPVx_nolen_const(sv);
3303 }
3304 }
35ae6b54 3305
c4aca7d0 3306 if( !gv && (!tmps || !*tmps) ) {
9a957fbc
AL		 3307 HV * const table = GvHVn(PL_envgv);
3308 SV **svp;
3309
a4fc7abc
AL		 3310 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3311 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
491527d0 3312#ifdef VMS
a4fc7abc 3313 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
491527d0 3314#endif
35ae6b54
MS		 3315 )
3316 {
3317 if( MAXARG == 1 )
9014280d 3318 deprecate("chdir('') or chdir(undef) as chdir()");
8c074e2a 3319 tmps = SvPV_nolen_const(*svp);
35ae6b54 3320 }
72f496dc 3321 else {
389ec635 3322 PUSHi(0);
b7ab37f8 3323 TAINT_PROPER("chdir");
389ec635
MS		 3324 RETURN;
3325 }
8ea155d1 3326 }
8ea155d1 3327
a0d0e21e 3328 TAINT_PROPER("chdir");
c4aca7d0
GA		 3329 if (gv) {
3330#ifdef HAS_FCHDIR
9a957fbc 3331 IO* const io = GvIO(gv);
c4aca7d0
GA		 3332 if (io) {
3333 if (IoIFP(io)) {
3334 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3335 }
3336 else if (IoDIRP(io)) {
3337#ifdef HAS_DIRFD
3338 PUSHi(fchdir(dirfd(IoDIRP(io))) >= 0);
3339#else
0f1f2428 3340 DIE(aTHX_ PL_no_func, "dirfd");
c4aca7d0
GA		 3341#endif
3342 }
3343 else {
4dc171f0
PD		 3344 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3345 report_evil_fh(gv, io, PL_op->op_type);
3346 SETERRNO(EBADF, RMS_IFI);
c4aca7d0
GA		 3347 PUSHi(0);
3348 }
3349 }
3350 else {
4dc171f0
PD		 3351 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3352 report_evil_fh(gv, io, PL_op->op_type);
3353 SETERRNO(EBADF,RMS_IFI);
c4aca7d0
GA		 3354 PUSHi(0);
3355 }
3356#else
3357 DIE(aTHX_ PL_no_func, "fchdir");
3358#endif
3359 }
3360 else
b8ffc8df 3361 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3362#ifdef VMS
3363 /* Clear the DEFAULT element of ENV so we'll get the new value
3364 * in the future. */
6b88bc9c 3365 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3366#endif
a0d0e21e
LW		 3367 RETURN;
3368}
3369
3370PP(pp_chown)
3371{
97aff369 3372 dVAR; dSP; dMARK; dTARGET;
605b9385 3373 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
76ffd3b9 3374
a0d0e21e 3375 SP = MARK;
b59aed67 3376 XPUSHi(value);
a0d0e21e 3377 RETURN;
a0d0e21e
LW		 3378}
3379
3380PP(pp_chroot)
3381{
a0d0e21e 3382#ifdef HAS_CHROOT
97aff369 3383 dVAR; dSP; dTARGET;
7452cf6a 3384 char * const tmps = POPpx;
a0d0e21e
LW		 3385 TAINT_PROPER("chroot");
3386 PUSHi( chroot(tmps) >= 0 );
3387 RETURN;
3388#else
cea2e8a9 3389 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3390#endif
3391}
3392
a0d0e21e
LW		 3393PP(pp_rename)
3394{
97aff369 3395 dVAR; dSP; dTARGET;
a0d0e21e 3396 int anum;
7452cf6a
AL		 3397 const char * const tmps2 = POPpconstx;
3398 const char * const tmps = SvPV_nolen_const(TOPs);
a0d0e21e
LW		 3399 TAINT_PROPER("rename");
3400#ifdef HAS_RENAME
baed7233 3401 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3402#else
6b88bc9c 3403 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
ed969818
W		 3404 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3405 anum = 1;
3406 else {
3654eb6c 3407 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
ed969818
W		 3408 (void)UNLINK(tmps2);
3409 if (!(anum = link(tmps, tmps2)))
3410 anum = UNLINK(tmps);
3411 }
a0d0e21e
LW		 3412 }
3413#endif
3414 SETi( anum >= 0 );
3415 RETURN;
3416}
3417
ce6987d0 3418#if defined(HAS_LINK) || defined(HAS_SYMLINK)
a0d0e21e
LW		 3419PP(pp_link)
3420{
97aff369 3421 dVAR; dSP; dTARGET;
ce6987d0
NC		 3422 const int op_type = PL_op->op_type;
3423 int result;
a0d0e21e 3424
ce6987d0
NC		 3425# ifndef HAS_LINK
3426 if (op_type == OP_LINK)
3427 DIE(aTHX_ PL_no_func, "link");
3428# endif
3429# ifndef HAS_SYMLINK
3430 if (op_type == OP_SYMLINK)
3431 DIE(aTHX_ PL_no_func, "symlink");
3432# endif
3433
3434 {
7452cf6a
AL		 3435 const char * const tmps2 = POPpconstx;
3436 const char * const tmps = SvPV_nolen_const(TOPs);
ce6987d0
NC		 3437 TAINT_PROPER(PL_op_desc[op_type]);
3438 result =
3439# if defined(HAS_LINK)
3440# if defined(HAS_SYMLINK)
3441 /* Both present - need to choose which. */
3442 (op_type == OP_LINK) ?
3443 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3444# else
4a8ebb7f
SH		 3445 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3446 PerlLIO_link(tmps, tmps2);
ce6987d0
NC		 3447# endif
3448# else
3449# if defined(HAS_SYMLINK)
4a8ebb7f
SH		 3450 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3451 symlink(tmps, tmps2);
ce6987d0
NC		 3452# endif
3453# endif
3454 }
3455
3456 SETi( result >= 0 );