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Missed three sv_2mortal(newSVpvn(...))s in the headers.
[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW		 1/* pp_sys.c
2 *
fdf8c088
RGS		 3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 * 2004, 2005, 2006, 2007 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}
d6864606 300# define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
5ff3f7a4
GS		 301#endif
302
a0d0e21e
LW		 303PP(pp_backtick)
304{
97aff369 305 dVAR; dSP; dTARGET;
760ac839 306 PerlIO *fp;
1b6737cc 307 const char * const tmps = POPpconstx;
f54cb97a 308 const I32 gimme = GIMME_V;
e1ec3a88 309 const char *mode = "r";
54310121 310
a0d0e21e 311 TAINT_PROPER("``");
16fe6d59
GS		 312 if (PL_op->op_private & OPpOPEN_IN_RAW)
313 mode = "rb";
314 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
315 mode = "rt";
2fbb330f 316 fp = PerlProc_popen(tmps, mode);
a0d0e21e 317 if (fp) {
11bcd5da 318 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
ac27b0f5
NIS		 319 if (type && *type)
320 PerlIO_apply_layers(aTHX_ fp,mode,type);
321
54310121 322 if (gimme == G_VOID) {
96827780
MB		 323 char tmpbuf[256];
324 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
a79db61d 325 NOOP;
54310121 326 }
327 else if (gimme == G_SCALAR) {
75af1a9c
DM		 328 ENTER;
329 SAVESPTR(PL_rs);
fa326138 330 PL_rs = &PL_sv_undef;
c69006e4 331 sv_setpvn(TARG, "", 0); /* note that this preserves previous buffer */
bd61b366 332 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 333 NOOP;
75af1a9c 334 LEAVE;
a0d0e21e 335 XPUSHs(TARG);
aa689395 336 SvTAINTED_on(TARG);
a0d0e21e
LW		 337 }
338 else {
a0d0e21e 339 for (;;) {
561b68a9 340 SV * const sv = newSV(79);
bd61b366 341 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW		 342 SvREFCNT_dec(sv);
343 break;
344 }
345 XPUSHs(sv_2mortal(sv));
346 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 347 SvPV_shrink_to_cur(sv);
a0d0e21e 348 }
aa689395 349 SvTAINTED_on(sv);
a0d0e21e
LW		 350 }
351 }
2fbb330f 352 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 353 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 354 }
355 else {
37038d91 356 STATUS_NATIVE_CHILD_SET(-1);
54310121 357 if (gimme == G_SCALAR)
a0d0e21e
LW		 358 RETPUSHUNDEF;
359 }
360
361 RETURN;
362}
363
364PP(pp_glob)
365{
27da23d5 366 dVAR;
a0d0e21e 367 OP *result;
f5284f61
IZ		 368 tryAMAGICunTARGET(iter, -1);
369
71686f12
GS		 370 /* Note that we only ever get here if File::Glob fails to load
371 * without at the same time croaking, for some reason, or if
372 * perl was built with PERL_EXTERNAL_GLOB */
373
a0d0e21e 374 ENTER;
a0d0e21e 375
c90c0ff4 376#ifndef VMS
3280af22 377 if (PL_tainting) {
7bac28a0 378 /*
379 * The external globbing program may use things we can't control,
380 * so for security reasons we must assume the worst.
381 */
382 TAINT;
22c35a8c 383 taint_proper(PL_no_security, "glob");
7bac28a0 384 }
c90c0ff4 385#endif /* !VMS */
7bac28a0 386
3280af22
NIS		 387 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
388 PL_last_in_gv = (GV*)*PL_stack_sp--;
a0d0e21e 389
3280af22 390 SAVESPTR(PL_rs); /* This is not permanent, either. */
84bafc02 391 PL_rs = newSVpvs_flags("\000", SVs_TEMP);
c07a80fd 392#ifndef DOSISH
393#ifndef CSH
6b88bc9c 394 *SvPVX(PL_rs) = '\n';
a0d0e21e 395#endif /* !CSH */
55497cff 396#endif /* !DOSISH */
c07a80fd 397
a0d0e21e
LW		 398 result = do_readline();
399 LEAVE;
400 return result;
401}
402
a0d0e21e
LW		 403PP(pp_rcatline)
404{
97aff369 405 dVAR;
146174a9 406 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 407 return do_readline();
408}
409
410PP(pp_warn)
411{
97aff369 412 dVAR; dSP; dMARK;
06bf62c7 413 SV *tmpsv;
e1ec3a88 414 const char *tmps;
06bf62c7 415 STRLEN len;
b59aed67 416 if (SP - MARK > 1) {
a0d0e21e 417 dTARGET;
3280af22 418 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 419 tmpsv = TARG;
a0d0e21e
LW		 420 SP = MARK + 1;
421 }
b59aed67
TS		 422 else if (SP == MARK) {
423 tmpsv = &PL_sv_no;
424 EXTEND(SP, 1);
83f957ec 425 SP = MARK + 1;
b59aed67 426 }
a0d0e21e 427 else {
06bf62c7 428 tmpsv = TOPs;
a0d0e21e 429 }
e62f0680 430 tmps = SvPV_const(tmpsv, len);
7b102d90 431 if ((!tmps || !len) && PL_errgv) {
1b6737cc 432 SV * const error = ERRSV;
862a34c6 433 SvUPGRADE(error, SVt_PV);
4e6ea2c3 434 if (SvPOK(error) && SvCUR(error))
396482e1 435 sv_catpvs(error, "\t...caught");
06bf62c7 436 tmpsv = error;
e62f0680 437 tmps = SvPV_const(tmpsv, len);
a0d0e21e 438 }
06bf62c7 439 if (!tmps || !len)
84bafc02 440 tmpsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
06bf62c7 441
be2597df 442 Perl_warn(aTHX_ "%"SVf, SVfARG(tmpsv));
a0d0e21e
LW		 443 RETSETYES;
444}
445
446PP(pp_die)
447{
97aff369 448 dVAR; dSP; dMARK;
e1ec3a88 449 const char *tmps;
06bf62c7
GS		 450 SV *tmpsv;
451 STRLEN len;
452 bool multiarg = 0;
96e176bf
CL		 453#ifdef VMS
454 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
455#endif
a0d0e21e
LW		 456 if (SP - MARK != 1) {
457 dTARGET;
3280af22 458 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 459 tmpsv = TARG;
5c144d81 460 tmps = SvPV_const(tmpsv, len);
06bf62c7 461 multiarg = 1;
a0d0e21e
LW		 462 SP = MARK + 1;
463 }
464 else {
4e6ea2c3 465 tmpsv = TOPs;
fe5bfecd 466 tmps = SvROK(tmpsv) ? (const char *)NULL : SvPV_const(tmpsv, len);
a0d0e21e 467 }
06bf62c7 468 if (!tmps || !len) {
0bcc34c2 469 SV * const error = ERRSV;
862a34c6 470 SvUPGRADE(error, SVt_PV);
06bf62c7
GS		 471 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
472 if (!multiarg)
4e6ea2c3 473 SvSetSV(error,tmpsv);
06bf62c7 474 else if (sv_isobject(error)) {
7452cf6a
AL		 475 HV * const stash = SvSTASH(SvRV(error));
476 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
05423cc9 477 if (gv) {
7452cf6a
AL		 478 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
479 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
05423cc9
GS		 480 EXTEND(SP, 3);
481 PUSHMARK(SP);
482 PUSHs(error);
483 PUSHs(file);
484 PUSHs(line);
485 PUTBACK;
864dbfa3
GS		 486 call_sv((SV*)GvCV(gv),
487 G_SCALAR|G_EVAL|G_KEEPERR);
3280af22 488 sv_setsv(error,*PL_stack_sp--);
05423cc9
GS		 489 }
490 }
bd61b366 491 DIE(aTHX_ NULL);
4e6ea2c3
GS		 492 }
493 else {
494 if (SvPOK(error) && SvCUR(error))
396482e1 495 sv_catpvs(error, "\t...propagated");
06bf62c7 496 tmpsv = error;
dc8d642c
DM		 497 if (SvOK(tmpsv))
498 tmps = SvPV_const(tmpsv, len);
499 else
bd61b366 500 tmps = NULL;
4e6ea2c3 501 }
a0d0e21e 502 }
06bf62c7 503 if (!tmps || !len)
84bafc02 504 tmpsv = newSVpvs_flags("Died", SVs_TEMP);
06bf62c7 505
be2597df 506 DIE(aTHX_ "%"SVf, SVfARG(tmpsv));
a0d0e21e
LW		 507}
508
509/* I/O. */
510
511PP(pp_open)
512{
27da23d5 513 dVAR; dSP;
a567e93b
NIS		 514 dMARK; dORIGMARK;
515 dTARGET;
a0d0e21e 516 SV *sv;
5b468f54 517 IO *io;
5c144d81 518 const char *tmps;
a0d0e21e 519 STRLEN len;
a567e93b 520 bool ok;
a0d0e21e 521
c4420975
AL		 522 GV * const gv = (GV *)*++MARK;
523
5f05dabc 524 if (!isGV(gv))
cea2e8a9 525 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 526
a79db61d
AL		 527 if ((io = GvIOp(gv))) {
528 MAGIC *mg;
36477c24 529 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 530
abc718f2
RGS		 531 if (IoDIRP(io) && ckWARN2(WARN_IO, WARN_DEPRECATED))
532 Perl_warner(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
533 "Opening dirhandle %s also as a file", GvENAME(gv));
534
a79db61d 535 mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
c4420975
AL		 536 if (mg) {
537 /* Method's args are same as ours ... */
538 /* ... except handle is replaced by the object */
539 *MARK-- = SvTIED_obj((SV*)io, mg);
540 PUSHMARK(MARK);
541 PUTBACK;
542 ENTER;
543 call_method("OPEN", G_SCALAR);
544 LEAVE;
545 SPAGAIN;
546 RETURN;
547 }
4592e6ca
NIS		 548 }
549
a567e93b
NIS		 550 if (MARK < SP) {
551 sv = *++MARK;
552 }
553 else {
35a08ec7 554 sv = GvSVn(gv);
a567e93b
NIS		 555 }
556
5c144d81 557 tmps = SvPV_const(sv, len);
4608196e 558 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
a567e93b
NIS		 559 SP = ORIGMARK;
560 if (ok)
3280af22
NIS		 561 PUSHi( (I32)PL_forkprocess );
562 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 563 PUSHi(0);
564 else
565 RETPUSHUNDEF;
566 RETURN;
567}
568
569PP(pp_close)
570{
27da23d5 571 dVAR; dSP;
c4420975 572 GV * const gv = (MAXARG == 0) ? PL_defoutgv : (GV*)POPs;
1d603a67 573
a79db61d
AL		 574 if (gv) {
575 IO * const io = GvIO(gv);
576 if (io) {
577 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
578 if (mg) {
579 PUSHMARK(SP);
580 XPUSHs(SvTIED_obj((SV*)io, mg));
581 PUTBACK;
582 ENTER;
583 call_method("CLOSE", G_SCALAR);
584 LEAVE;
585 SPAGAIN;
586 RETURN;
587 }
588 }
1d603a67 589 }
a0d0e21e 590 EXTEND(SP, 1);
54310121 591 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 592 RETURN;
593}
594
595PP(pp_pipe_op)
596{
a0d0e21e 597#ifdef HAS_PIPE
97aff369 598 dVAR;
9cad6237 599 dSP;
a0d0e21e
LW		 600 register IO *rstio;
601 register IO *wstio;
602 int fd[2];
603
c4420975
AL		 604 GV * const wgv = (GV*)POPs;
605 GV * const rgv = (GV*)POPs;
a0d0e21e
LW		 606
607 if (!rgv || !wgv)
608 goto badexit;
609
4633a7c4 610 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
cea2e8a9 611 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 612 rstio = GvIOn(rgv);
613 wstio = GvIOn(wgv);
614
615 if (IoIFP(rstio))
616 do_close(rgv, FALSE);
617 if (IoIFP(wstio))
618 do_close(wgv, FALSE);
619
6ad3d225 620 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 621 goto badexit;
622
460c8493
IZ		 623 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
624 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 625 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 626 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 627 IoTYPE(rstio) = IoTYPE_RDONLY;
628 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 629
630 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL		 631 if (IoIFP(rstio))
632 PerlIO_close(IoIFP(rstio));
633 else
634 PerlLIO_close(fd[0]);
635 if (IoOFP(wstio))
636 PerlIO_close(IoOFP(wstio));
637 else
638 PerlLIO_close(fd[1]);
a0d0e21e
LW		 639 goto badexit;
640 }
4771b018
GS		 641#if defined(HAS_FCNTL) && defined(F_SETFD)
642 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
643 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
644#endif
a0d0e21e
LW		 645 RETPUSHYES;
646
647badexit:
648 RETPUSHUNDEF;
649#else
cea2e8a9 650 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 651#endif
652}
653
654PP(pp_fileno)
655{
27da23d5 656 dVAR; dSP; dTARGET;
a0d0e21e
LW		 657 GV *gv;
658 IO *io;
760ac839 659 PerlIO *fp;
4592e6ca
NIS		 660 MAGIC *mg;
661
a0d0e21e
LW		 662 if (MAXARG < 1)
663 RETPUSHUNDEF;
664 gv = (GV*)POPs;
4592e6ca 665
5b468f54
AMS		 666 if (gv && (io = GvIO(gv))
667 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
668 {
4592e6ca 669 PUSHMARK(SP);
5b468f54 670 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 671 PUTBACK;
672 ENTER;
864dbfa3 673 call_method("FILENO", G_SCALAR);
4592e6ca
NIS		 674 LEAVE;
675 SPAGAIN;
676 RETURN;
677 }
678
c289d2f7
JH		 679 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
680 /* Can't do this because people seem to do things like
681 defined(fileno($foo)) to check whether $foo is a valid fh.
682 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
683 report_evil_fh(gv, io, PL_op->op_type);
684 */
a0d0e21e 685 RETPUSHUNDEF;
c289d2f7
JH		 686 }
687
760ac839 688 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 689 RETURN;
690}
691
692PP(pp_umask)
693{
97aff369 694 dVAR;
27da23d5 695 dSP;
d7e492a4 696#ifdef HAS_UMASK
27da23d5 697 dTARGET;
761237fe 698 Mode_t anum;
a0d0e21e 699
a0d0e21e 700 if (MAXARG < 1) {
b0b546b3
GA		 701 anum = PerlLIO_umask(022);
702 /* setting it to 022 between the two calls to umask avoids
703 * to have a window where the umask is set to 0 -- meaning
704 * that another thread could create world-writeable files. */
705 if (anum != 022)
706 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 707 }
708 else
6ad3d225 709 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 710 TAINT_PROPER("umask");
711 XPUSHi(anum);
712#else
a0288114 713 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS		 714 * Otherwise it's harmless and more useful to just return undef
715 * since 'group' and 'other' concepts probably don't exist here. */
716 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 717 DIE(aTHX_ "umask not implemented");
6b88bc9c 718 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 719#endif
720 RETURN;
721}
722
723PP(pp_binmode)
724{
27da23d5 725 dVAR; dSP;
a0d0e21e
LW		 726 GV *gv;
727 IO *io;
760ac839 728 PerlIO *fp;
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
a79db61d
AL		 739 if (gv && (io = GvIO(gv))) {
740 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
741 if (mg) {
742 PUSHMARK(SP);
743 XPUSHs(SvTIED_obj((SV*)io, mg));
744 if (discp)
745 XPUSHs(discp);
746 PUTBACK;
747 ENTER;
748 call_method("BINMODE", G_SCALAR);
749 LEAVE;
750 SPAGAIN;
751 RETURN;
752 }
4592e6ca 753 }
a0d0e21e
LW		 754
755 EXTEND(SP, 1);
50f846a7 756 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7
JH		 757 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
758 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 759 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC		 760 RETPUSHUNDEF;
761 }
a0d0e21e 762
40d98b49 763 PUTBACK;
f0a78170
NC		 764 {
765 const int mode = mode_from_discipline(discp);
766 const char *const d = (discp ? SvPV_nolen_const(discp) : NULL);
767 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
768 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
769 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
770 SPAGAIN;
771 RETPUSHUNDEF;
772 }
773 }
774 SPAGAIN;
775 RETPUSHYES;
776 }
777 else {
778 SPAGAIN;
779 RETPUSHUNDEF;
38af81ff 780 }
40d98b49 781 }
a0d0e21e
LW		 782}
783
784PP(pp_tie)
785{
27da23d5 786 dVAR; dSP; dMARK;
a0d0e21e
LW		 787 HV* stash;
788 GV *gv;
a0d0e21e 789 SV *sv;
1df70142 790 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 791 const char *methname;
14befaf4 792 int how = PERL_MAGIC_tied;
e336de0d 793 U32 items;
c4420975 794 SV *varsv = *++MARK;
a0d0e21e 795
6b05c17a
NIS		 796 switch(SvTYPE(varsv)) {
797 case SVt_PVHV:
798 methname = "TIEHASH";
bfcb3514 799 HvEITER_set((HV *)varsv, 0);
6b05c17a
NIS		 800 break;
801 case SVt_PVAV:
802 methname = "TIEARRAY";
803 break;
804 case SVt_PVGV:
7fb37951
AMS		 805#ifdef GV_UNIQUE_CHECK
806 if (GvUNIQUE((GV*)varsv)) {
807 Perl_croak(aTHX_ "Attempt to tie unique GV");
5bd07a3d
DM		 808 }
809#endif
6b05c17a 810 methname = "TIEHANDLE";
14befaf4 811 how = PERL_MAGIC_tiedscalar;
5b468f54
AMS		 812 /* For tied filehandles, we apply tiedscalar magic to the IO
813 slot of the GP rather than the GV itself. AMS 20010812 */
814 if (!GvIOp(varsv))
815 GvIOp(varsv) = newIO();
816 varsv = (SV *)GvIOp(varsv);
6b05c17a
NIS		 817 break;
818 default:
819 methname = "TIESCALAR";
14befaf4 820 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 821 break;
822 }
e336de0d
GS		 823 items = SP - MARK++;
824 if (sv_isobject(*MARK)) {
6b05c17a 825 ENTER;
e788e7d3 826 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 827 PUSHMARK(SP);
eb160463 828 EXTEND(SP,(I32)items);
e336de0d
GS		 829 while (items--)
830 PUSHs(*MARK++);
831 PUTBACK;
864dbfa3 832 call_method(methname, G_SCALAR);
301e8125 833 }
6b05c17a 834 else {
864dbfa3 835 /* Not clear why we don't call call_method here too.
6b05c17a
NIS		 836 * perhaps to get different error message ?
837 */
da51bb9b 838 stash = gv_stashsv(*MARK, 0);
6b05c17a 839 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 840 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
be2597df 841 methname, SVfARG(*MARK));
6b05c17a
NIS		 842 }
843 ENTER;
e788e7d3 844 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 845 PUSHMARK(SP);
eb160463 846 EXTEND(SP,(I32)items);
e336de0d
GS		 847 while (items--)
848 PUSHs(*MARK++);
849 PUTBACK;
864dbfa3 850 call_sv((SV*)GvCV(gv), G_SCALAR);
6b05c17a 851 }
a0d0e21e
LW		 852 SPAGAIN;
853
854 sv = TOPs;
d3acc0f7 855 POPSTACK;
a0d0e21e 856 if (sv_isobject(sv)) {
33c27489 857 sv_unmagic(varsv, how);
ae21d580 858 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 859 if (varsv == SvRV(sv) &&
d87ebaca
YST		 860 (SvTYPE(varsv) == SVt_PVAV ||
861 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 862 Perl_croak(aTHX_
863 "Self-ties of arrays and hashes are not supported");
a0714e2c 864 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e
LW		 865 }
866 LEAVE;
3280af22 867 SP = PL_stack_base + markoff;
a0d0e21e
LW		 868 PUSHs(sv);
869 RETURN;
870}
871
872PP(pp_untie)
873{
27da23d5 874 dVAR; dSP;
5b468f54 875 MAGIC *mg;
33c27489 876 SV *sv = POPs;
1df70142 877 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 878 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 879
5b468f54
AMS		 880 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
881 RETPUSHYES;
882
65eba18f 883 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 884 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 885 if (obj) {
c4420975 886 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 887 CV *cv;
c4420975 888 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0
JS		 889 PUSHMARK(SP);
890 XPUSHs(SvTIED_obj((SV*)gv, mg));
891 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
892 PUTBACK;
893 ENTER;
894 call_sv((SV *)cv, G_VOID);
895 LEAVE;
896 SPAGAIN;
897 }
041457d9 898 else if (mg && SvREFCNT(obj) > 1 && ckWARN(WARN_UNTIE)) {
9014280d 899 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
fa2b88e0
JS		 900 "untie attempted while %"UVuf" inner references still exist",
901 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 902 }
cbdc8872 903 }
904 }
38193a09 905 sv_unmagic(sv, how) ;
55497cff 906 RETPUSHYES;
a0d0e21e
LW		 907}
908
c07a80fd 909PP(pp_tied)
910{
97aff369 911 dVAR;
39644a26 912 dSP;
1b6737cc 913 const MAGIC *mg;
33c27489 914 SV *sv = POPs;
1df70142 915 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 916 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54
AMS		 917
918 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
919 RETPUSHUNDEF;
c07a80fd 920
155aba94 921 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 922 SV *osv = SvTIED_obj(sv, mg);
923 if (osv == mg->mg_obj)
924 osv = sv_mortalcopy(osv);
925 PUSHs(osv);
926 RETURN;
c07a80fd 927 }
c07a80fd 928 RETPUSHUNDEF;
929}
930
a0d0e21e
LW		 931PP(pp_dbmopen)
932{
27da23d5 933 dVAR; dSP;
a0d0e21e
LW		 934 dPOPPOPssrl;
935 HV* stash;
936 GV *gv;
a0d0e21e 937
1b6737cc 938 HV * const hv = (HV*)POPs;
84bafc02 939 SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
da51bb9b 940 stash = gv_stashsv(sv, 0);
8ebc5c01 941 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 942 PUTBACK;
864dbfa3 943 require_pv("AnyDBM_File.pm");
a0d0e21e 944 SPAGAIN;
8ebc5c01 945 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 946 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 947 }
948
57d3b86d 949 ENTER;
924508f0 950 PUSHMARK(SP);
6b05c17a 951
924508f0 952 EXTEND(SP, 5);
a0d0e21e
LW		 953 PUSHs(sv);
954 PUSHs(left);
955 if (SvIV(right))
b448e4fe 956 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
a0d0e21e 957 else
b448e4fe 958 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
a0d0e21e 959 PUSHs(right);
57d3b86d 960 PUTBACK;
864dbfa3 961 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 962 SPAGAIN;
963
964 if (!sv_isobject(TOPs)) {
924508f0
GS		 965 SP--;
966 PUSHMARK(SP);
a0d0e21e
LW		 967 PUSHs(sv);
968 PUSHs(left);
b448e4fe 969 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
a0d0e21e 970 PUSHs(right);
a0d0e21e 971 PUTBACK;
864dbfa3 972 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 973 SPAGAIN;
974 }
975
6b05c17a 976 if (sv_isobject(TOPs)) {
14befaf4 977 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
bd61b366 978 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 979 }
a0d0e21e
LW		 980 LEAVE;
981 RETURN;
982}
983
a0d0e21e
LW		 984PP(pp_sselect)
985{
a0d0e21e 986#ifdef HAS_SELECT
97aff369 987 dVAR; dSP; dTARGET;
a0d0e21e
LW		 988 register I32 i;
989 register I32 j;
990 register char *s;
991 register SV *sv;
65202027 992 NV value;
a0d0e21e
LW		 993 I32 maxlen = 0;
994 I32 nfound;
995 struct timeval timebuf;
996 struct timeval *tbuf = &timebuf;
997 I32 growsize;
998 char *fd_sets[4];
999#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1000 I32 masksize;
1001 I32 offset;
1002 I32 k;
1003
1004# if BYTEORDER & 0xf0000
1005# define ORDERBYTE (0x88888888 - BYTEORDER)
1006# else
1007# define ORDERBYTE (0x4444 - BYTEORDER)
1008# endif
1009
1010#endif
1011
1012 SP -= 4;
1013 for (i = 1; i <= 3; i++) {
c4420975 1014 SV * const sv = SP[i];
15547071
GA		 1015 if (!SvOK(sv))
1016 continue;
1017 if (SvREADONLY(sv)) {
729c079f
NC		 1018 if (SvIsCOW(sv))
1019 sv_force_normal_flags(sv, 0);
15547071 1020 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
729c079f
NC		 1021 DIE(aTHX_ PL_no_modify);
1022 }
4ef2275c
GA		 1023 if (!SvPOK(sv)) {
1024 if (ckWARN(WARN_MISC))
1025 Perl_warner(aTHX_ packWARN(WARN_MISC), "Non-string passed as bitmask");
1026 SvPV_force_nolen(sv); /* force string conversion */
1027 }
729c079f 1028 j = SvCUR(sv);
a0d0e21e
LW		 1029 if (maxlen < j)
1030 maxlen = j;
1031 }
1032
5ff3f7a4 1033/* little endians can use vecs directly */
e366b469 1034#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1035# ifdef NFDBITS
a0d0e21e 1036
5ff3f7a4
GS		 1037# ifndef NBBY
1038# define NBBY 8
1039# endif
a0d0e21e
LW		 1040
1041 masksize = NFDBITS / NBBY;
5ff3f7a4 1042# else
a0d0e21e 1043 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1044# endif
a0d0e21e
LW		 1045 Zero(&fd_sets[0], 4, char*);
1046#endif
1047
ad517f75
MHM		 1048# if SELECT_MIN_BITS == 1
1049 growsize = sizeof(fd_set);
1050# else
1051# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1052# undef SELECT_MIN_BITS
1053# define SELECT_MIN_BITS __FD_SETSIZE
1054# endif
e366b469
PG		 1055 /* If SELECT_MIN_BITS is greater than one we most probably will want
1056 * to align the sizes with SELECT_MIN_BITS/8 because for example
1057 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1058 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1059 * on (sets/tests/clears bits) is 32 bits. */
1060 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG		 1061# endif
1062
a0d0e21e
LW		 1063 sv = SP[4];
1064 if (SvOK(sv)) {
1065 value = SvNV(sv);
1066 if (value < 0.0)
1067 value = 0.0;
1068 timebuf.tv_sec = (long)value;
65202027 1069 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1070 timebuf.tv_usec = (long)(value * 1000000.0);
1071 }
1072 else
4608196e 1073 tbuf = NULL;
a0d0e21e
LW		 1074
1075 for (i = 1; i <= 3; i++) {
1076 sv = SP[i];
15547071 1077 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW		 1078 fd_sets[i] = 0;
1079 continue;
1080 }
4ef2275c 1081 assert(SvPOK(sv));
a0d0e21e
LW		 1082 j = SvLEN(sv);
1083 if (j < growsize) {
1084 Sv_Grow(sv, growsize);
a0d0e21e 1085 }
c07a80fd 1086 j = SvCUR(sv);
1087 s = SvPVX(sv) + j;
1088 while (++j <= growsize) {
1089 *s++ = '\0';
1090 }
1091
a0d0e21e
LW		 1092#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1093 s = SvPVX(sv);
a02a5408 1094 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW		 1095 for (offset = 0; offset < growsize; offset += masksize) {
1096 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1097 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1098 }
1099#else
1100 fd_sets[i] = SvPVX(sv);
1101#endif
1102 }
1103
dc4c69d9
JH		 1104#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1105 /* Can't make just the (void*) conditional because that would be
1106 * cpp #if within cpp macro, and not all compilers like that. */
1107 nfound = PerlSock_select(
1108 maxlen * 8,
1109 (Select_fd_set_t) fd_sets[1],
1110 (Select_fd_set_t) fd_sets[2],
1111 (Select_fd_set_t) fd_sets[3],
1112 (void*) tbuf); /* Workaround for compiler bug. */
1113#else
6ad3d225 1114 nfound = PerlSock_select(
a0d0e21e
LW		 1115 maxlen * 8,
1116 (Select_fd_set_t) fd_sets[1],
1117 (Select_fd_set_t) fd_sets[2],
1118 (Select_fd_set_t) fd_sets[3],
1119 tbuf);
dc4c69d9 1120#endif
a0d0e21e
LW		 1121 for (i = 1; i <= 3; i++) {
1122 if (fd_sets[i]) {
1123 sv = SP[i];
1124#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1125 s = SvPVX(sv);
1126 for (offset = 0; offset < growsize; offset += masksize) {
1127 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1128 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1129 }
1130 Safefree(fd_sets[i]);
1131#endif
1132 SvSETMAGIC(sv);
1133 }
1134 }
1135
4189264e 1136 PUSHi(nfound);
a0d0e21e 1137 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1138 value = (NV)(timebuf.tv_sec) +
1139 (NV)(timebuf.tv_usec) / 1000000.0;
7c58897d 1140 PUSHs(sv_2mortal(newSVnv(value)));
a0d0e21e
LW		 1141 }
1142 RETURN;
1143#else
cea2e8a9 1144 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1145#endif
1146}
1147
4633a7c4 1148void
864dbfa3 1149Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1150{
97aff369 1151 dVAR;
b37c2d43 1152 SvREFCNT_inc_simple_void(gv);
3280af22
NIS		 1153 if (PL_defoutgv)
1154 SvREFCNT_dec(PL_defoutgv);
1155 PL_defoutgv = gv;
4633a7c4
LW		 1156}
1157
a0d0e21e
LW		 1158PP(pp_select)
1159{
97aff369 1160 dVAR; dSP; dTARGET;
4633a7c4 1161 HV *hv;
a79db61d 1162 GV * const newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : NULL;
7452cf6a 1163 GV * egv = GvEGV(PL_defoutgv);
4633a7c4 1164
4633a7c4 1165 if (!egv)
3280af22 1166 egv = PL_defoutgv;
4633a7c4
LW		 1167 hv = GvSTASH(egv);
1168 if (! hv)
3280af22 1169 XPUSHs(&PL_sv_undef);
4633a7c4 1170 else {
c4420975 1171 GV * const * const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1172 if (gvp && *gvp == egv) {
bd61b366 1173 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1174 XPUSHTARG;
1175 }
1176 else {
1177 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1178 }
4633a7c4
LW		 1179 }
1180
1181 if (newdefout) {
ded8aa31
GS		 1182 if (!GvIO(newdefout))
1183 gv_IOadd(newdefout);
4633a7c4
LW		 1184 setdefout(newdefout);
1185 }
1186
a0d0e21e
LW		 1187 RETURN;
1188}
1189
1190PP(pp_getc)
1191{
27da23d5 1192 dVAR; dSP; dTARGET;
90133b69 1193 IO *io = NULL;
1b6737cc 1194 GV * const gv = (MAXARG==0) ? PL_stdingv : (GV*)POPs;
2ae324a7 1195
a79db61d
AL		 1196 if (gv && (io = GvIO(gv))) {
1197 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1198 if (mg) {
1199 const I32 gimme = GIMME_V;
1200 PUSHMARK(SP);
1201 XPUSHs(SvTIED_obj((SV*)io, mg));
1202 PUTBACK;
1203 ENTER;
1204 call_method("GETC", gimme);
1205 LEAVE;
1206 SPAGAIN;
1207 if (gimme == G_SCALAR)
1208 SvSetMagicSV_nosteal(TARG, TOPs);
1209 RETURN;
1210 }
2ae324a7 1211 }
90133b69 1212 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
041457d9
DM		 1213 if ((!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1214 && ckWARN2(WARN_UNOPENED,WARN_CLOSED))
90133b69 1215 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 1216 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1217 RETPUSHUNDEF;
90133b69 1218 }
bbce6d69 1219 TAINT;
c69006e4 1220 sv_setpvn(TARG, " ", 1);
9bc64814 1221 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1222 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1223 /* Find out how many bytes the char needs */
aa07b2f6 1224 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS		 1225 if (len > 1) {
1226 SvGROW(TARG,len+1);
1227 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1228 SvCUR_set(TARG,1+len);
1229 }
1230 SvUTF8_on(TARG);
1231 }
a0d0e21e
LW		 1232 PUSHTARG;
1233 RETURN;
1234}
1235
76e3520e 1236STATIC OP *
cea2e8a9 1237S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1238{
27da23d5 1239 dVAR;
c09156bb 1240 register PERL_CONTEXT *cx;
f54cb97a 1241 const I32 gimme = GIMME_V;
a0d0e21e
LW		 1242
1243 ENTER;
1244 SAVETMPS;
1245
146174a9 1246 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
a0d0e21e 1247 PUSHFORMAT(cx);
f39bc417 1248 cx->blk_sub.retop = retop;
fd617465
DM		 1249 SAVECOMPPAD();
1250 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
a0d0e21e 1251
4633a7c4 1252 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1253 return CvSTART(cv);
1254}
1255
1256PP(pp_enterwrite)
1257{
97aff369 1258 dVAR;
39644a26 1259 dSP;
a0d0e21e
LW		 1260 register GV *gv;
1261 register IO *io;
1262 GV *fgv;
1263 CV *cv;
10edeb5d 1264 SV * tmpsv = NULL;
a0d0e21e
LW		 1265
1266 if (MAXARG == 0)
3280af22 1267 gv = PL_defoutgv;
a0d0e21e
LW		 1268 else {
1269 gv = (GV*)POPs;
1270 if (!gv)
3280af22 1271 gv = PL_defoutgv;
a0d0e21e
LW		 1272 }
1273 EXTEND(SP, 1);
1274 io = GvIO(gv);
1275 if (!io) {
1276 RETPUSHNO;
1277 }
1278 if (IoFMT_GV(io))
1279 fgv = IoFMT_GV(io);
1280 else
1281 fgv = gv;
1282
a79db61d
AL		 1283 if (!fgv)
1284 goto not_a_format_reference;
1285
a0d0e21e 1286 cv = GvFORM(fgv);
a0d0e21e 1287 if (!cv) {
f4a7049d 1288 const char *name;
10edeb5d 1289 tmpsv = sv_newmortal();
f4a7049d
NC		 1290 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1291 name = SvPV_nolen_const(tmpsv);
1292 if (name && *name)
1293 DIE(aTHX_ "Undefined format \"%s\" called", name);
a79db61d
AL		 1294
1295 not_a_format_reference:
cea2e8a9 1296 DIE(aTHX_ "Not a format reference");
a0d0e21e 1297 }
44a8e56a 1298 if (CvCLONE(cv))
1299 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1300
44a8e56a 1301 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1302 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1303}
1304
1305PP(pp_leavewrite)
1306{
27da23d5 1307 dVAR; dSP;
1b6737cc
AL		 1308 GV * const gv = cxstack[cxstack_ix].blk_sub.gv;
1309 register IO * const io = GvIOp(gv);
8b8cacda 1310 PerlIO *ofp;
760ac839 1311 PerlIO *fp;
8772537c
AL		 1312 SV **newsp;
1313 I32 gimme;
c09156bb 1314 register PERL_CONTEXT *cx;
a0d0e21e 1315
8b8cacda
B		 1316 if (!io || !(ofp = IoOFP(io)))
1317 goto forget_top;
1318
760ac839 1319 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1320 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1321
3280af22
NIS		 1322 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1323 PL_formtarget != PL_toptarget)
a0d0e21e 1324 {
4633a7c4
LW		 1325 GV *fgv;
1326 CV *cv;
a0d0e21e
LW		 1327 if (!IoTOP_GV(io)) {
1328 GV *topgv;
a0d0e21e
LW		 1329
1330 if (!IoTOP_NAME(io)) {
1b6737cc 1331 SV *topname;
a0d0e21e
LW		 1332 if (!IoFMT_NAME(io))
1333 IoFMT_NAME(io) = savepv(GvNAME(gv));
0bd0581c 1334 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
f776e3cd 1335 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1336 if ((topgv && GvFORM(topgv)) ||
fafc274c 1337 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1338 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1339 else
89529cee 1340 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1341 }
f776e3cd 1342 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1343 if (!topgv || !GvFORM(topgv)) {
b929a54b 1344 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1345 goto forget_top;
1346 }
1347 IoTOP_GV(io) = topgv;
1348 }
748a9306
LW		 1349 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1350 I32 lines = IoLINES_LEFT(io);
504618e9 1351 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD		 1352 if (lines <= 0) /* Yow, header didn't even fit!!! */
1353 goto forget_top;
748a9306
LW		 1354 while (lines-- > 0) {
1355 s = strchr(s, '\n');
1356 if (!s)
1357 break;
1358 s++;
1359 }
1360 if (s) {
f54cb97a 1361 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1362 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1363 do_print(PL_formtarget, ofp);
1364 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1365 sv_chop(PL_formtarget, s);
1366 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1367 }
1368 }
a0d0e21e 1369 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1370 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1371 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1372 IoPAGE(io)++;
3280af22 1373 PL_formtarget = PL_toptarget;
748a9306 1374 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1375 fgv = IoTOP_GV(io);
1376 if (!fgv)
cea2e8a9 1377 DIE(aTHX_ "bad top format reference");
4633a7c4 1378 cv = GvFORM(fgv);
1df70142
AL		 1379 if (!cv) {
1380 SV * const sv = sv_newmortal();
b464bac0 1381 const char *name;
bd61b366 1382 gv_efullname4(sv, fgv, NULL, FALSE);
e62f0680 1383 name = SvPV_nolen_const(sv);
2dd78f96 1384 if (name && *name)
0e528f24
JH		 1385 DIE(aTHX_ "Undefined top format \"%s\" called", name);
1386 else
1387 DIE(aTHX_ "Undefined top format called");
4633a7c4 1388 }
0e528f24 1389 if (cv && CvCLONE(cv))
44a8e56a 1390 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
0e528f24 1391 return doform(cv, gv, PL_op);
a0d0e21e
LW		 1392 }
1393
1394 forget_top:
3280af22 1395 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1396 POPFORMAT(cx);
1397 LEAVE;
1398
1399 fp = IoOFP(io);
1400 if (!fp) {
599cee73 1401 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1402 if (IoIFP(io))
1403 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1404 else if (ckWARN(WARN_CLOSED))
bc37a18f 1405 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1406 }
3280af22 1407 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1408 }
1409 else {
3280af22 1410 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1411 if (ckWARN(WARN_IO))
9014280d 1412 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1413 }
d75029d0 1414 if (!do_print(PL_formtarget, fp))
3280af22 1415 PUSHs(&PL_sv_no);
a0d0e21e 1416 else {
3280af22
NIS		 1417 FmLINES(PL_formtarget) = 0;
1418 SvCUR_set(PL_formtarget, 0);
1419 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1420 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1421 (void)PerlIO_flush(fp);
3280af22 1422 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1423 }
1424 }
9cbac4c7 1425 /* bad_ofp: */
3280af22 1426 PL_formtarget = PL_bodytarget;
a0d0e21e 1427 PUTBACK;
29033a8a
SH		 1428 PERL_UNUSED_VAR(newsp);
1429 PERL_UNUSED_VAR(gimme);
f39bc417 1430 return cx->blk_sub.retop;
a0d0e21e
LW		 1431}
1432
1433PP(pp_prtf)
1434{
27da23d5 1435 dVAR; dSP; dMARK; dORIGMARK;
a0d0e21e 1436 IO *io;
760ac839 1437 PerlIO *fp;
26db47c4 1438 SV *sv;
a0d0e21e 1439
c4420975 1440 GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv;
46fc3d4c 1441
a79db61d
AL		 1442 if (gv && (io = GvIO(gv))) {
1443 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1444 if (mg) {
1445 if (MARK == ORIGMARK) {
1446 MEXTEND(SP, 1);
1447 ++MARK;
1448 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1449 ++SP;
1450 }
1451 PUSHMARK(MARK - 1);
1452 *MARK = SvTIED_obj((SV*)io, mg);
1453 PUTBACK;
1454 ENTER;
1455 call_method("PRINTF", G_SCALAR);
1456 LEAVE;
1457 SPAGAIN;
1458 MARK = ORIGMARK + 1;
1459 *MARK = *SP;
1460 SP = MARK;
1461 RETURN;
1462 }
46fc3d4c 1463 }
1464
561b68a9 1465 sv = newSV(0);
a0d0e21e 1466 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1467 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1468 report_evil_fh(gv, io, PL_op->op_type);
93189314 1469 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1470 goto just_say_no;
1471 }
1472 else if (!(fp = IoOFP(io))) {
599cee73 1473 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1474 if (IoIFP(io))
1475 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1476 else if (ckWARN(WARN_CLOSED))
bc37a18f 1477 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1478 }
93189314 1479 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1480 goto just_say_no;
1481 }
1482 else {
20ee07fb
RGS		 1483 if (SvTAINTED(MARK[1]))
1484 TAINT_PROPER("printf");
a0d0e21e
LW		 1485 do_sprintf(sv, SP - MARK, MARK + 1);
1486 if (!do_print(sv, fp))
1487 goto just_say_no;
1488
1489 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1490 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1491 goto just_say_no;
1492 }
1493 SvREFCNT_dec(sv);
1494 SP = ORIGMARK;
3280af22 1495 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1496 RETURN;
1497
1498 just_say_no:
1499 SvREFCNT_dec(sv);
1500 SP = ORIGMARK;
3280af22 1501 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1502 RETURN;
1503}
1504
c07a80fd 1505PP(pp_sysopen)
1506{
97aff369 1507 dVAR;
39644a26 1508 dSP;
1df70142
AL		 1509 const int perm = (MAXARG > 3) ? POPi : 0666;
1510 const int mode = POPi;
1b6737cc
AL		 1511 SV * const sv = POPs;
1512 GV * const gv = (GV *)POPs;
1513 STRLEN len;
c07a80fd 1514
4592e6ca 1515 /* Need TIEHANDLE method ? */
1b6737cc 1516 const char * const tmps = SvPV_const(sv, len);
e62f0680 1517 /* FIXME? do_open should do const */
4608196e 1518 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1519 IoLINES(GvIOp(gv)) = 0;
3280af22 1520 PUSHs(&PL_sv_yes);
c07a80fd 1521 }
1522 else {
3280af22 1523 PUSHs(&PL_sv_undef);
c07a80fd 1524 }
1525 RETURN;
1526}
1527
a0d0e21e
LW		 1528PP(pp_sysread)
1529{
27da23d5 1530 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1531 int offset;
a0d0e21e
LW		 1532 IO *io;
1533 char *buffer;
5b54f415 1534 SSize_t length;
eb5c063a 1535 SSize_t count;
1e422769 1536 Sock_size_t bufsize;
748a9306 1537 SV *bufsv;
a0d0e21e 1538 STRLEN blen;
eb5c063a 1539 int fp_utf8;
1dd30107
NC		 1540 int buffer_utf8;
1541 SV *read_target;
eb5c063a
NIS		 1542 Size_t got = 0;
1543 Size_t wanted;
1d636c13 1544 bool charstart = FALSE;
87330c3c
JH		 1545 STRLEN charskip = 0;
1546 STRLEN skip = 0;
a0d0e21e 1547
1b6737cc 1548 GV * const gv = (GV*)*++MARK;
5b468f54 1549 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1550 && gv && (io = GvIO(gv)) )
137443ea 1551 {
1b6737cc
AL		 1552 const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1553 if (mg) {
1554 SV *sv;
1555 PUSHMARK(MARK-1);
1556 *MARK = SvTIED_obj((SV*)io, mg);
1557 ENTER;
1558 call_method("READ", G_SCALAR);
1559 LEAVE;
1560 SPAGAIN;
1561 sv = POPs;
1562 SP = ORIGMARK;
1563 PUSHs(sv);
1564 RETURN;
1565 }
2ae324a7 1566 }
1567
a0d0e21e
LW		 1568 if (!gv)
1569 goto say_undef;
748a9306 1570 bufsv = *++MARK;
ff68c719 1571 if (! SvOK(bufsv))
1572 sv_setpvn(bufsv, "", 0);
a0d0e21e 1573 length = SvIVx(*++MARK);
748a9306 1574 SETERRNO(0,0);
a0d0e21e
LW		 1575 if (MARK < SP)
1576 offset = SvIVx(*++MARK);
1577 else
1578 offset = 0;
1579 io = GvIO(gv);
b5fe5ca2
SR		 1580 if (!io || !IoIFP(io)) {
1581 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1582 report_evil_fh(gv, io, PL_op->op_type);
1583 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1584 goto say_undef;
b5fe5ca2 1585 }
0064a8a9 1586 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1587 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1588 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1589 SvUTF8_on(bufsv);
9b9d7ce8 1590 buffer_utf8 = 0;
7d59b7e4
NIS		 1591 }
1592 else {
1593 buffer = SvPV_force(bufsv, blen);
1dd30107 1594 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4
NIS		 1595 }
1596 if (length < 0)
1597 DIE(aTHX_ "Negative length");
eb5c063a 1598 wanted = length;
7d59b7e4 1599
d0965105
JH		 1600 charstart = TRUE;
1601 charskip = 0;
87330c3c 1602 skip = 0;
d0965105 1603
a0d0e21e 1604#ifdef HAS_SOCKET
533c011a 1605 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1606 char namebuf[MAXPATHLEN];
17a8c7ba 1607#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
490ab354
JH		 1608 bufsize = sizeof (struct sockaddr_in);
1609#else
46fc3d4c 1610 bufsize = sizeof namebuf;
490ab354 1611#endif
abf95952
IZ		 1612#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1613 if (bufsize >= 256)
1614 bufsize = 255;
1615#endif
eb160463 1616 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1617 /* 'offset' means 'flags' here */
eb5c063a 1618 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
10edeb5d 1619 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1620 if (count < 0)
a0d0e21e 1621 RETPUSHUNDEF;
4107cc59
OF		 1622#ifdef EPOC
1623 /* Bogus return without padding */
1624 bufsize = sizeof (struct sockaddr_in);
1625#endif
eb5c063a 1626 SvCUR_set(bufsv, count);
748a9306
LW		 1627 *SvEND(bufsv) = '\0';
1628 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1629 if (fp_utf8)
1630 SvUTF8_on(bufsv);
748a9306 1631 SvSETMAGIC(bufsv);
aac0dd9a 1632 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1633 if (!(IoFLAGS(io) & IOf_UNTAINT))
1634 SvTAINTED_on(bufsv);
a0d0e21e 1635 SP = ORIGMARK;
46fc3d4c 1636 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1637 PUSHs(TARG);
1638 RETURN;
1639 }
1640#else
911d147d 1641 if (PL_op->op_type == OP_RECV)
cea2e8a9 1642 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1643#endif
eb5c063a
NIS		 1644 if (DO_UTF8(bufsv)) {
1645 /* offset adjust in characters not bytes */
1646 blen = sv_len_utf8(bufsv);
7d59b7e4 1647 }
bbce6d69 1648 if (offset < 0) {
eb160463 1649 if (-offset > (int)blen)
cea2e8a9 1650 DIE(aTHX_ "Offset outside string");
bbce6d69 1651 offset += blen;
1652 }
eb5c063a
NIS		 1653 if (DO_UTF8(bufsv)) {
1654 /* convert offset-as-chars to offset-as-bytes */
6960c29a
CH		 1655 if (offset >= (int)blen)
1656 offset += SvCUR(bufsv) - blen;
1657 else
1658 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS		 1659 }
1660 more_bytes:
cd52b7b2 1661 bufsize = SvCUR(bufsv);
1dd30107
NC		 1662 /* Allocating length + offset + 1 isn't perfect in the case of reading
1663 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1664 unduly.
1665 (should be 2 * length + offset + 1, or possibly something longer if
1666 PL_encoding is true) */
eb160463 1667 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
27da23d5 1668 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
cd52b7b2 1669 Zero(buffer+bufsize, offset-bufsize, char);
1670 }
eb5c063a 1671 buffer = buffer + offset;
1dd30107
NC		 1672 if (!buffer_utf8) {
1673 read_target = bufsv;
1674 } else {
1675 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1676 concatenate it to the current buffer. */
1677
1678 /* Truncate the existing buffer to the start of where we will be
1679 reading to: */
1680 SvCUR_set(bufsv, offset);
1681
1682 read_target = sv_newmortal();
862a34c6 1683 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1684 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1685 }
eb5c063a 1686
533c011a 1687 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1688#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1689 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1690 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1691 buffer, length, 0);
a7092146
GS		 1692 }
1693 else
1694#endif
1695 {
eb5c063a
NIS		 1696 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1697 buffer, length);
a7092146 1698 }
a0d0e21e
LW		 1699 }
1700 else
1701#ifdef HAS_SOCKET__bad_code_maybe
50952442 1702 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1703 char namebuf[MAXPATHLEN];
490ab354
JH		 1704#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1705 bufsize = sizeof (struct sockaddr_in);
1706#else
46fc3d4c 1707 bufsize = sizeof namebuf;
490ab354 1708#endif
eb5c063a 1709 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1710 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1711 }
1712 else
1713#endif
3b02c43c 1714 {
eb5c063a
NIS		 1715 count = PerlIO_read(IoIFP(io), buffer, length);
1716 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1717 if (count == 0 && PerlIO_error(IoIFP(io)))
1718 count = -1;
3b02c43c 1719 }
eb5c063a 1720 if (count < 0) {
a00b5bd3 1721 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
6e6ef6b2 1722 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
a0d0e21e 1723 goto say_undef;
af8c498a 1724 }
aa07b2f6 1725 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1726 *SvEND(read_target) = '\0';
1727 (void)SvPOK_only(read_target);
0064a8a9 1728 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1729 /* Look at utf8 we got back and count the characters */
1df70142 1730 const char *bend = buffer + count;
eb5c063a 1731 while (buffer < bend) {
d0965105
JH		 1732 if (charstart) {
1733 skip = UTF8SKIP(buffer);
1734 charskip = 0;
1735 }
1736 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1737 /* partial character - try for rest of it */
1738 length = skip - (bend-buffer);
aa07b2f6 1739 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1740 charstart = FALSE;
1741 charskip += count;
eb5c063a
NIS		 1742 goto more_bytes;
1743 }
1744 else {
1745 got++;
1746 buffer += skip;
d0965105
JH		 1747 charstart = TRUE;
1748 charskip = 0;
eb5c063a
NIS		 1749 }
1750 }
1751 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1752 provided amount read (count) was what was requested (length)
1753 */
1754 if (got < wanted && count == length) {
d0965105 1755 length = wanted - got;
aa07b2f6 1756 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1757 goto more_bytes;
1758 }
1759 /* return value is character count */
1760 count = got;
1761 SvUTF8_on(bufsv);
1762 }
1dd30107
NC		 1763 else if (buffer_utf8) {
1764 /* Let svcatsv upgrade the bytes we read in to utf8.
1765 The buffer is a mortal so will be freed soon. */
1766 sv_catsv_nomg(bufsv, read_target);
1767 }
748a9306 1768 SvSETMAGIC(bufsv);
aac0dd9a 1769 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1770 if (!(IoFLAGS(io) & IOf_UNTAINT))
1771 SvTAINTED_on(bufsv);
a0d0e21e 1772 SP = ORIGMARK;
eb5c063a 1773 PUSHi(count);
a0d0e21e
LW		 1774 RETURN;
1775
1776 say_undef:
1777 SP = ORIGMARK;
1778 RETPUSHUNDEF;
1779}
1780
a0d0e21e
LW		 1781PP(pp_send)
1782{
27da23d5 1783 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1784 IO *io;
748a9306 1785 SV *bufsv;
83003860 1786 const char *buffer;
8c99d73e 1787 SSize_t retval;
a0d0e21e 1788 STRLEN blen;
c9cb0f41 1789 STRLEN orig_blen_bytes;
64a1bc8e 1790 const int op_type = PL_op->op_type;
c9cb0f41
NC		 1791 bool doing_utf8;
1792 U8 *tmpbuf = NULL;
64a1bc8e 1793
7452cf6a 1794 GV *const gv = (GV*)*++MARK;
14befaf4 1795 if (PL_op->op_type == OP_SYSWRITE
a79db61d
AL		 1796 && gv && (io = GvIO(gv))) {
1797 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1798 if (mg) {
1799 SV *sv;
64a1bc8e 1800
a79db61d
AL		 1801 if (MARK == SP - 1) {
1802 EXTEND(SP, 1000);
1803 sv = sv_2mortal(newSViv(sv_len(*SP)));
1804 PUSHs(sv);
1805 PUTBACK;
1806 }
1807
1808 PUSHMARK(ORIGMARK);
1809 *(ORIGMARK+1) = SvTIED_obj((SV*)io, mg);
1810 ENTER;
1811 call_method("WRITE", G_SCALAR);
1812 LEAVE;
1813 SPAGAIN;
1814 sv = POPs;
1815 SP = ORIGMARK;
64a1bc8e 1816 PUSHs(sv);
a79db61d 1817 RETURN;
64a1bc8e 1818 }
1d603a67 1819 }
a0d0e21e
LW		 1820 if (!gv)
1821 goto say_undef;
64a1bc8e 1822
748a9306 1823 bufsv = *++MARK;
64a1bc8e 1824
748a9306 1825 SETERRNO(0,0);
a0d0e21e 1826 io = GvIO(gv);
cf167416 1827 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1828 retval = -1;
cf167416
RGS		 1829 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
1830 if (io && IoIFP(io))
1831 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1832 else
1833 report_evil_fh(gv, io, PL_op->op_type);
1834 }
b5fe5ca2 1835 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1836 goto say_undef;
1837 }
1838
c9cb0f41
NC		 1839 /* Do this first to trigger any overloading. */
1840 buffer = SvPV_const(bufsv, blen);
1841 orig_blen_bytes = blen;
1842 doing_utf8 = DO_UTF8(bufsv);
1843
7d59b7e4 1844 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7 1845 if (!SvUTF8(bufsv)) {
c9cb0f41
NC		 1846 /* We don't modify the original scalar. */
1847 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1848 buffer = (char *) tmpbuf;
1849 doing_utf8 = TRUE;
1850 }
a0d0e21e 1851 }
c9cb0f41
NC		 1852 else if (doing_utf8) {
1853 STRLEN tmplen = blen;
a79db61d 1854 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC		 1855 if (!doing_utf8) {
1856 tmpbuf = result;
1857 buffer = (char *) tmpbuf;
1858 blen = tmplen;
1859 }
1860 else {
1861 assert((char *)result == buffer);
1862 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1863 }
7d59b7e4
NIS		 1864 }
1865
64a1bc8e 1866 if (op_type == OP_SYSWRITE) {
c9cb0f41
NC		 1867 Size_t length = 0; /* This length is in characters. */
1868 STRLEN blen_chars;
7d59b7e4 1869 IV offset;
c9cb0f41
NC		 1870
1871 if (doing_utf8) {
1872 if (tmpbuf) {
1873 /* The SV is bytes, and we've had to upgrade it. */
1874 blen_chars = orig_blen_bytes;
1875 } else {
1876 /* The SV really is UTF-8. */
1877 if (SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1878 /* Don't call sv_len_utf8 again because it will call magic
1879 or overloading a second time, and we might get back a
1880 different result. */
9a206dfd 1881 blen_chars = utf8_length((U8*)buffer, (U8*)buffer + blen);
c9cb0f41
NC		 1882 } else {
1883 /* It's safe, and it may well be cached. */
1884 blen_chars = sv_len_utf8(bufsv);
1885 }
1886 }
1887 } else {
1888 blen_chars = blen;
1889 }
1890
1891 if (MARK >= SP) {
1892 length = blen_chars;
1893 } else {
1894#if Size_t_size > IVSIZE
1895 length = (Size_t)SvNVx(*++MARK);
1896#else
1897 length = (Size_t)SvIVx(*++MARK);
1898#endif
4b0c4b6f
NC		 1899 if ((SSize_t)length < 0) {
1900 Safefree(tmpbuf);
c9cb0f41 1901 DIE(aTHX_ "Negative length");
4b0c4b6f 1902 }
7d59b7e4 1903 }
c9cb0f41 1904
bbce6d69 1905 if (MARK < SP) {
a0d0e21e 1906 offset = SvIVx(*++MARK);
bbce6d69 1907 if (offset < 0) {
4b0c4b6f
NC		 1908 if (-offset > (IV)blen_chars) {
1909 Safefree(tmpbuf);
cea2e8a9 1910 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1911 }
c9cb0f41 1912 offset += blen_chars;
4b0c4b6f
NC		 1913 } else if (offset >= (IV)blen_chars && blen_chars > 0) {
1914 Safefree(tmpbuf);
cea2e8a9 1915 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1916 }
bbce6d69 1917 } else
a0d0e21e 1918 offset = 0;
c9cb0f41
NC		 1919 if (length > blen_chars - offset)
1920 length = blen_chars - offset;
1921 if (doing_utf8) {
1922 /* Here we convert length from characters to bytes. */
1923 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1924 /* Either we had to convert the SV, or the SV is magical, or
1925 the SV has overloading, in which case we can't or mustn't
1926 or mustn't call it again. */
1927
1928 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1929 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1930 } else {
1931 /* It's a real UTF-8 SV, and it's not going to change under
1932 us. Take advantage of any cache. */
1933 I32 start = offset;
1934 I32 len_I32 = length;
1935
1936 /* Convert the start and end character positions to bytes.
1937 Remember that the second argument to sv_pos_u2b is relative
1938 to the first. */
1939 sv_pos_u2b(bufsv, &start, &len_I32);
1940
1941 buffer += start;
1942 length = len_I32;
1943 }
7d59b7e4
NIS		 1944 }
1945 else {
1946 buffer = buffer+offset;
1947 }
a7092146 1948#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1949 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1950 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1951 buffer, length, 0);
a7092146
GS		 1952 }
1953 else
1954#endif
1955 {
94e4c244 1956 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1957 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1958 buffer, length);
a7092146 1959 }
a0d0e21e
LW		 1960 }
1961#ifdef HAS_SOCKET
64a1bc8e
NC		 1962 else {
1963 const int flags = SvIVx(*++MARK);
1964 if (SP > MARK) {
1965 STRLEN mlen;
1966 char * const sockbuf = SvPVx(*++MARK, mlen);
1967 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1968 flags, (struct sockaddr *)sockbuf, mlen);
1969 }
1970 else {
1971 retval
1972 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1973 }
a0d0e21e 1974 }
a0d0e21e
LW		 1975#else
1976 else
cea2e8a9 1977 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1978#endif
c9cb0f41 1979
8c99d73e 1980 if (retval < 0)
a0d0e21e
LW		 1981 goto say_undef;
1982 SP = ORIGMARK;
c9cb0f41 1983 if (doing_utf8)
f36eea10 1984 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 1985
a79db61d 1986 Safefree(tmpbuf);
8c99d73e
GS		 1987#if Size_t_size > IVSIZE
1988 PUSHn(retval);
1989#else
1990 PUSHi(retval);
1991#endif
a0d0e21e
LW		 1992 RETURN;
1993
1994 say_undef:
a79db61d 1995 Safefree(tmpbuf);
a0d0e21e
LW		 1996 SP = ORIGMARK;
1997 RETPUSHUNDEF;
1998}
1999
a0d0e21e
LW		 2000PP(pp_eof)
2001{
27da23d5 2002 dVAR; dSP;
a0d0e21e
LW		 2003 GV *gv;
2004
32da55ab 2005 if (MAXARG == 0) {
146174a9
CB		 2006 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
2007 IO *io;
ed2c6b9b 2008 gv = PL_last_in_gv = GvEGV(PL_argvgv);
146174a9
CB		 2009 io = GvIO(gv);
2010 if (io && !IoIFP(io)) {
2011 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2012 IoLINES(io) = 0;
2013 IoFLAGS(io) &= ~IOf_START;
4608196e 2014 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
1e1d4b91
JJ		 2015 if ( GvSV(gv) ) {
2016 sv_setpvn(GvSV(gv), "-", 1);
2017 }
2018 else {
2019 GvSV(gv) = newSVpvn("-", 1);
2020 }
146174a9
CB		 2021 SvSETMAGIC(GvSV(gv));
2022 }
2023 else if (!nextargv(gv))
2024 RETPUSHYES;
2025 }
2026 }
2027 else
2028 gv = PL_last_in_gv; /* eof */
2029 }
a0d0e21e 2030 else
146174a9 2031 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 2032
6136c704
AL		 2033 if (gv) {
2034 IO * const io = GvIO(gv);
2035 MAGIC * mg;
2036 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
2037 PUSHMARK(SP);
2038 XPUSHs(SvTIED_obj((SV*)io, mg));
2039 PUTBACK;
2040 ENTER;
2041 call_method("EOF", G_SCALAR);
2042 LEAVE;
2043 SPAGAIN;
2044 RETURN;
2045 }
4592e6ca
NIS		 2046 }
2047
54310121 2048 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 2049 RETURN;
2050}
2051
2052PP(pp_tell)
2053{
27da23d5 2054 dVAR; dSP; dTARGET;
301e8125 2055 GV *gv;
5b468f54 2056 IO *io;
a0d0e21e 2057
c4420975
AL		 2058 if (MAXARG != 0)
2059 PL_last_in_gv = (GV*)POPs;
2060 gv = PL_last_in_gv;
4592e6ca 2061
a79db61d
AL		 2062 if (gv && (io = GvIO(gv))) {
2063 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
2064 if (mg) {
2065 PUSHMARK(SP);
2066 XPUSHs(SvTIED_obj((SV*)io, mg));
2067 PUTBACK;
2068 ENTER;
2069 call_method("TELL", G_SCALAR);
2070 LEAVE;
2071 SPAGAIN;
2072 RETURN;
2073 }
4592e6ca
NIS		 2074 }
2075
146174a9
CB		 2076#if LSEEKSIZE > IVSIZE
2077 PUSHn( do_tell(gv) );
2078#else
a0d0e21e 2079 PUSHi( do_tell(gv) );
146174a9 2080#endif
a0d0e21e
LW		 2081 RETURN;
2082}
2083
137443ea 2084PP(pp_sysseek)
2085{
27da23d5 2086 dVAR; dSP;
1df70142 2087 const int whence = POPi;
146174a9 2088#if LSEEKSIZE > IVSIZE
7452cf6a 2089 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2090#else
7452cf6a 2091 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2092#endif
a0d0e21e 2093
7452cf6a 2094 GV * const gv = PL_last_in_gv = (GV*)POPs;
a79db61d 2095 IO *io;
4592e6ca 2096
a79db61d
AL		 2097 if (gv && (io = GvIO(gv))) {
2098 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
2099 if (mg) {
2100 PUSHMARK(SP);
2101 XPUSHs(SvTIED_obj((SV*)io, mg));
cb50131a 2102#if LSEEKSIZE > IVSIZE
a79db61d 2103 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
cb50131a 2104#else
a79db61d 2105 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 2106#endif
a79db61d
AL		 2107 XPUSHs(sv_2mortal(newSViv(whence)));
2108 PUTBACK;
2109 ENTER;
2110 call_method("SEEK", G_SCALAR);
2111 LEAVE;
2112 SPAGAIN;
2113 RETURN;
2114 }
4592e6ca
NIS		 2115 }
2116
533c011a 2117 if (PL_op->op_type == OP_SEEK)
8903cb82 2118 PUSHs(boolSV(do_seek(gv, offset, whence)));
2119 else {
0bcc34c2 2120 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2121 if (sought < 0)
146174a9
CB		 2122 PUSHs(&PL_sv_undef);
2123 else {
7452cf6a 2124 SV* const sv = sought ?
146174a9 2125#if LSEEKSIZE > IVSIZE
b448e4fe 2126 newSVnv((NV)sought)
146174a9 2127#else
b448e4fe 2128 newSViv(sought)
146174a9
CB		 2129#endif
2130 : newSVpvn(zero_but_true, ZBTLEN);
2131 PUSHs(sv_2mortal(sv));
2132 }
8903cb82 2133 }
a0d0e21e
LW		 2134 RETURN;
2135}
2136
2137PP(pp_truncate)
2138{
97aff369 2139 dVAR;
39644a26 2140 dSP;
8c99d73e
GS		 2141 /* There seems to be no consensus on the length type of truncate()
2142 * and ftruncate(), both off_t and size_t have supporters. In
2143 * general one would think that when using large files, off_t is
2144 * at least as wide as size_t, so using an off_t should be okay. */
2145 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2146 Off_t len;
a0d0e21e 2147
25342a55 2148#if Off_t_size > IVSIZE
0bcc34c2 2149 len = (Off_t)POPn;
8c99d73e 2150#else
0bcc34c2 2151 len = (Off_t)POPi;
8c99d73e
GS		 2152#endif
2153 /* Checking for length < 0 is problematic as the type might or
301e8125 2154 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2155 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2156 SETERRNO(0,0);
d05c1ba0 2157 {
d05c1ba0
JH		 2158 int result = 1;
2159 GV *tmpgv;
090bf15b
SR		 2160 IO *io;
2161
d05c1ba0 2162 if (PL_op->op_flags & OPf_SPECIAL) {
f776e3cd 2163 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
d05c1ba0 2164
090bf15b
SR		 2165 do_ftruncate_gv:
2166 if (!GvIO(tmpgv))
2167 result = 0;
d05c1ba0 2168 else {
090bf15b
SR		 2169 PerlIO *fp;
2170 io = GvIOp(tmpgv);
2171 do_ftruncate_io:
2172 TAINT_PROPER("truncate");
2173 if (!(fp = IoIFP(io))) {
2174 result = 0;
2175 }
2176 else {
2177 PerlIO_flush(fp);
cbdc8872 2178#ifdef HAS_TRUNCATE
090bf15b 2179 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2180#else
090bf15b 2181 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2182#endif
090bf15b
SR		 2183 result = 0;
2184 }
d05c1ba0 2185 }
cbdc8872 2186 }
d05c1ba0 2187 else {
7452cf6a 2188 SV * const sv = POPs;
83003860 2189 const char *name;
7a5fd60d 2190
d05c1ba0
JH		 2191 if (SvTYPE(sv) == SVt_PVGV) {
2192 tmpgv = (GV*)sv; /* *main::FRED for example */
090bf15b 2193 goto do_ftruncate_gv;
d05c1ba0
JH		 2194 }
2195 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2196 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
090bf15b
SR		 2197 goto do_ftruncate_gv;
2198 }
2199 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2200 io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
2201 goto do_ftruncate_io;
d05c1ba0 2202 }
1e422769 2203
83003860 2204 name = SvPV_nolen_const(sv);
d05c1ba0 2205 TAINT_PROPER("truncate");
cbdc8872 2206#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2207 if (truncate(name, len) < 0)
2208 result = 0;
cbdc8872 2209#else
d05c1ba0 2210 {
7452cf6a 2211 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2212
7452cf6a 2213 if (tmpfd < 0)
cbdc8872 2214 result = 0;
d05c1ba0
JH		 2215 else {
2216 if (my_chsize(tmpfd, len) < 0)
2217 result = 0;
2218 PerlLIO_close(tmpfd);
2219 }
cbdc8872 2220 }
a0d0e21e 2221#endif
d05c1ba0 2222 }
a0d0e21e 2223
d05c1ba0
JH		 2224 if (result)
2225 RETPUSHYES;
2226 if (!errno)
93189314 2227 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2228 RETPUSHUNDEF;
2229 }
a0d0e21e
LW		 2230}
2231
a0d0e21e
LW		 2232PP(pp_ioctl)
2233{
97aff369 2234 dVAR; dSP; dTARGET;
7452cf6a 2235 SV * const argsv = POPs;
1df70142 2236 const unsigned int func = POPu;
e1ec3a88 2237 const int optype = PL_op->op_type;
7452cf6a 2238 GV * const gv = (GV*)POPs;
4608196e 2239 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2240 char *s;
324aa91a 2241 IV retval;
a0d0e21e 2242
748a9306 2243 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2244 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2245 report_evil_fh(gv, io, PL_op->op_type);
93189314 2246 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2247 RETPUSHUNDEF;
2248 }
2249
748a9306 2250 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2251 STRLEN len;
324aa91a 2252 STRLEN need;
748a9306 2253 s = SvPV_force(argsv, len);
324aa91a
HF		 2254 need = IOCPARM_LEN(func);
2255 if (len < need) {
2256 s = Sv_Grow(argsv, need + 1);
2257 SvCUR_set(argsv, need);
a0d0e21e
LW		 2258 }
2259
748a9306 2260 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2261 }
2262 else {
748a9306 2263 retval = SvIV(argsv);
c529f79d 2264 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2265 }
2266
ed4b2e6b 2267 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2268
2269 if (optype == OP_IOCTL)
2270#ifdef HAS_IOCTL
76e3520e 2271 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2272#else
cea2e8a9 2273 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2274#endif
2275 else
c214f4ad
WB		 2276#ifndef HAS_FCNTL
2277 DIE(aTHX_ "fcntl is not implemented");
2278#else
55497cff 2279#if defined(OS2) && defined(__EMX__)
760ac839 2280 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2281#else
760ac839 2282 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2283#endif
6652bd42 2284#endif
a0d0e21e 2285
6652bd42 2286#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2287 if (SvPOK(argsv)) {
2288 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2289 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2290 OP_NAME(PL_op));
748a9306
LW		 2291 s[SvCUR(argsv)] = 0; /* put our null back */
2292 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2293 }
2294
2295 if (retval == -1)
2296 RETPUSHUNDEF;
2297 if (retval != 0) {
2298 PUSHi(retval);
2299 }
2300 else {
8903cb82 2301 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2302 }
4808266b 2303#endif
c214f4ad 2304 RETURN;
a0d0e21e
LW		 2305}
2306
2307PP(pp_flock)
2308{
9cad6237 2309#ifdef FLOCK
97aff369 2310 dVAR; dSP; dTARGET;
a0d0e21e 2311 I32 value;
bc37a18f 2312 IO *io = NULL;
760ac839 2313 PerlIO *fp;
7452cf6a
AL		 2314 const int argtype = POPi;
2315 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
16d20bd9 2316
bc37a18f
RG		 2317 if (gv && (io = GvIO(gv)))
2318 fp = IoIFP(io);
2319 else {
4608196e 2320 fp = NULL;
bc37a18f
RG		 2321 io = NULL;
2322 }
0bcc34c2 2323 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2324 if (fp) {
68dc0745 2325 (void)PerlIO_flush(fp);
76e3520e 2326 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2327 }
cb50131a 2328 else {
bc37a18f
RG		 2329 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2330 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2331 value = 0;
93189314 2332 SETERRNO(EBADF,RMS_IFI);
cb50131a 2333 }
a0d0e21e
LW		 2334 PUSHi(value);
2335 RETURN;
2336#else
cea2e8a9 2337 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2338#endif
2339}
2340
2341/* Sockets. */
2342
2343PP(pp_socket)
2344{
a0d0e21e 2345#ifdef HAS_SOCKET
97aff369 2346 dVAR; dSP;
7452cf6a
AL		 2347 const int protocol = POPi;
2348 const int type = POPi;
2349 const int domain = POPi;
2350 GV * const gv = (GV*)POPs;
2351 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e
LW		 2352 int fd;
2353
c289d2f7
JH		 2354 if (!gv || !io) {
2355 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2356 report_evil_fh(gv, io, PL_op->op_type);
5ee74a84 2357 if (io && IoIFP(io))
c289d2f7 2358 do_close(gv, FALSE);
93189314 2359 SETERRNO(EBADF,LIB_INVARG);
a0d0e21e
LW		 2360 RETPUSHUNDEF;
2361 }
2362
57171420
BS		 2363 if (IoIFP(io))
2364 do_close(gv, FALSE);
2365
a0d0e21e 2366 TAINT_PROPER("socket");
6ad3d225 2367 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2368 if (fd < 0)
2369 RETPUSHUNDEF;
460c8493
IZ		 2370 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2371 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2372 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2373 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2374 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2375 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2376 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2377 RETPUSHUNDEF;
2378 }
8d2a6795
GS		 2379#if defined(HAS_FCNTL) && defined(F_SETFD)
2380 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2381#endif
a0d0e21e 2382
d5ff79b3
OF		 2383#ifdef EPOC
2384 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2385#endif
2386
a0d0e21e
LW		 2387 RETPUSHYES;
2388#else
cea2e8a9 2389 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2390#endif
2391}
2392
2393PP(pp_sockpair)
2394{
c95c94b1 2395#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2396 dVAR; dSP;
7452cf6a
AL		 2397 const int protocol = POPi;
2398 const int type = POPi;
2399 const int domain = POPi;
2400 GV * const gv2 = (GV*)POPs;
2401 GV * const gv1 = (GV*)POPs;
2402 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2403 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
a0d0e21e
LW		 2404 int fd[2];
2405
c289d2f7
JH		 2406 if (!gv1 || !gv2 || !io1 || !io2) {
2407 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2408 if (!gv1 || !io1)
2409 report_evil_fh(gv1, io1, PL_op->op_type);
2410 if (!gv2 || !io2)
2411 report_evil_fh(gv1, io2, PL_op->op_type);
2412 }
5ee74a84 2413 if (io1 && IoIFP(io1))
c289d2f7 2414 do_close(gv1, FALSE);
5ee74a84 2415 if (io2 && IoIFP(io2))
c289d2f7 2416 do_close(gv2, FALSE);
a0d0e21e 2417 RETPUSHUNDEF;
c289d2f7 2418 }
a0d0e21e 2419
dc0d0a5f
JH		 2420 if (IoIFP(io1))
2421 do_close(gv1, FALSE);
2422 if (IoIFP(io2))
2423 do_close(gv2, FALSE);
57171420 2424
a0d0e21e 2425 TAINT_PROPER("socketpair");
6ad3d225 2426 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2427 RETPUSHUNDEF;
460c8493
IZ		 2428 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2429 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2430 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ		 2431 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2432 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2433 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2434 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2435 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2436 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2437 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2438 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2439 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2440 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2441 RETPUSHUNDEF;
2442 }
8d2a6795
GS		 2443#if defined(HAS_FCNTL) && defined(F_SETFD)
2444 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2445 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2446#endif
a0d0e21e
LW		 2447
2448 RETPUSHYES;
2449#else
cea2e8a9 2450 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2451#endif
2452}
2453
2454PP(pp_bind)
2455{
a0d0e21e 2456#ifdef HAS_SOCKET
97aff369 2457 dVAR; dSP;
7452cf6a 2458 SV * const addrsv = POPs;
349d4f2f
NC		 2459 /* OK, so on what platform does bind modify addr? */
2460 const char *addr;
7452cf6a
AL		 2461 GV * const gv = (GV*)POPs;
2462 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 2463 STRLEN len;
2464
2465 if (!io || !IoIFP(io))
2466 goto nuts;
2467
349d4f2f 2468 addr = SvPV_const(addrsv, len);
a0d0e21e 2469 TAINT_PROPER("bind");
a79db61d 2470 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2471 RETPUSHYES;
2472 else
2473 RETPUSHUNDEF;
2474
2475nuts:
599cee73 2476 if (ckWARN(WARN_CLOSED))
bc37a18f 2477 report_evil_fh(gv, io, PL_op->op_type);
93189314 2478 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2479 RETPUSHUNDEF;
2480#else
cea2e8a9 2481 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2482#endif
2483}
2484
2485PP(pp_connect)
2486{
a0d0e21e 2487#ifdef HAS_SOCKET
97aff369 2488 dVAR; dSP;
7452cf6a
AL		 2489 SV * const addrsv = POPs;
2490 GV * const gv = (GV*)POPs;
2491 register IO * const io = GvIOn(gv);
349d4f2f 2492 const char *addr;
a0d0e21e
LW		 2493 STRLEN len;
2494
2495 if (!io || !IoIFP(io))
2496 goto nuts;
2497
349d4f2f 2498 addr = SvPV_const(addrsv, len);
a0d0e21e 2499 TAINT_PROPER("connect");
6ad3d225 2500 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2501 RETPUSHYES;
2502 else
2503 RETPUSHUNDEF;
2504
2505nuts:
599cee73 2506 if (ckWARN(WARN_CLOSED))
bc37a18f 2507 report_evil_fh(gv, io, PL_op->op_type);
93189314 2508 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2509 RETPUSHUNDEF;
2510#else
cea2e8a9 2511 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2512#endif
2513}
2514
2515PP(pp_listen)
2516{
a0d0e21e 2517#ifdef HAS_SOCKET
97aff369 2518 dVAR; dSP;
7452cf6a
AL		 2519 const int backlog = POPi;
2520 GV * const gv = (GV*)POPs;
2521 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2522
c289d2f7 2523 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2524 goto nuts;
2525
6ad3d225 2526 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2527 RETPUSHYES;
2528 else
2529 RETPUSHUNDEF;
2530
2531nuts:
599cee73 2532 if (ckWARN(WARN_CLOSED))
bc37a18f 2533 report_evil_fh(gv, io, PL_op->op_type);
93189314 2534 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2535 RETPUSHUNDEF;
2536#else
cea2e8a9 2537 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2538#endif
2539}
2540
2541PP(pp_accept)
2542{
a0d0e21e 2543#ifdef HAS_SOCKET
97aff369 2544 dVAR; dSP; dTARGET;
a0d0e21e
LW		 2545 register IO *nstio;
2546 register IO *gstio;
93d47a36
JH		 2547 char namebuf[MAXPATHLEN];
2548#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2549 Sock_size_t len = sizeof (struct sockaddr_in);
2550#else
2551 Sock_size_t len = sizeof namebuf;
2552#endif
7452cf6a
AL		 2553 GV * const ggv = (GV*)POPs;
2554 GV * const ngv = (GV*)POPs;
a0d0e21e
LW		 2555 int fd;
2556
a0d0e21e
LW		 2557 if (!ngv)
2558 goto badexit;
2559 if (!ggv)
2560 goto nuts;
2561
2562 gstio = GvIO(ggv);
2563 if (!gstio || !IoIFP(gstio))
2564 goto nuts;
2565
2566 nstio = GvIOn(ngv);
93d47a36 2567 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH		 2568#if defined(OEMVS)
2569 if (len == 0) {
2570 /* Some platforms indicate zero length when an AF_UNIX client is
2571 * not bound. Simulate a non-zero-length sockaddr structure in
2572 * this case. */
2573 namebuf[0] = 0; /* sun_len */
2574 namebuf[1] = AF_UNIX; /* sun_family */
2575 len = 2;
2576 }
2577#endif
2578
a0d0e21e
LW		 2579 if (fd < 0)
2580 goto badexit;
a70048fb
AB		 2581 if (IoIFP(nstio))
2582 do_close(ngv, FALSE);
460c8493
IZ		 2583 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2584 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2585 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2586 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2587 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2588 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2589 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2590 goto badexit;
2591 }
8d2a6795
GS		 2592#if defined(HAS_FCNTL) && defined(F_SETFD)
2593 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2594#endif
a0d0e21e 2595
ed79a026 2596#ifdef EPOC
93d47a36 2597 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
a9f1f6b0 2598 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026 2599#endif
381c1bae 2600#ifdef __SCO_VERSION__
93d47a36 2601 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2602#endif
ed79a026 2603
93d47a36 2604 PUSHp(namebuf, len);
a0d0e21e
LW		 2605 RETURN;
2606
2607nuts:
599cee73 2608 if (ckWARN(WARN_CLOSED))
bc37a18f 2609 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
93189314 2610 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2611
2612badexit:
2613 RETPUSHUNDEF;
2614
2615#else
cea2e8a9 2616 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2617#endif
2618}
2619
2620PP(pp_shutdown)
2621{
a0d0e21e 2622#ifdef HAS_SOCKET
97aff369 2623 dVAR; dSP; dTARGET;
7452cf6a
AL		 2624 const int how = POPi;
2625 GV * const gv = (GV*)POPs;
2626 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 2627
2628 if (!io || !IoIFP(io))
2629 goto nuts;
2630
6ad3d225 2631 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2632 RETURN;
2633
2634nuts:
599cee73 2635 if (ckWARN(WARN_CLOSED))
bc37a18f 2636 report_evil_fh(gv, io, PL_op->op_type);
93189314 2637 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2638 RETPUSHUNDEF;
2639#else
cea2e8a9 2640 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2641#endif
2642}
2643
a0d0e21e
LW		 2644PP(pp_ssockopt)
2645{
a0d0e21e 2646#ifdef HAS_SOCKET
97aff369 2647 dVAR; dSP;
7452cf6a 2648 const int optype = PL_op->op_type;
561b68a9 2649 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2650 const unsigned int optname = (unsigned int) POPi;
2651 const unsigned int lvl = (unsigned int) POPi;
2652 GV * const gv = (GV*)POPs;
2653 register IO * const io = GvIOn(gv);
a0d0e21e 2654 int fd;
1e422769 2655 Sock_size_t len;
a0d0e21e 2656
a0d0e21e
LW		 2657 if (!io || !IoIFP(io))
2658 goto nuts;
2659
760ac839 2660 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2661 switch (optype) {
2662 case OP_GSOCKOPT:
748a9306 2663 SvGROW(sv, 257);
a0d0e21e 2664 (void)SvPOK_only(sv);
748a9306
LW		 2665 SvCUR_set(sv,256);
2666 *SvEND(sv) ='\0';
1e422769 2667 len = SvCUR(sv);
6ad3d225 2668 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2669 goto nuts2;
1e422769 2670 SvCUR_set(sv, len);
748a9306 2671 *SvEND(sv) ='\0';
a0d0e21e
LW		 2672 PUSHs(sv);
2673 break;
2674 case OP_SSOCKOPT: {
1215b447
JH		 2675#if defined(__SYMBIAN32__)
2676# define SETSOCKOPT_OPTION_VALUE_T void *
2677#else
2678# define SETSOCKOPT_OPTION_VALUE_T const char *
2679#endif
2680 /* XXX TODO: We need to have a proper type (a Configure probe,
2681 * etc.) for what the C headers think of the third argument of
2682 * setsockopt(), the option_value read-only buffer: is it
2683 * a "char *", or a "void *", const or not. Some compilers
2684 * don't take kindly to e.g. assuming that "char *" implicitly
2685 * promotes to a "void *", or to explicitly promoting/demoting
2686 * consts to non/vice versa. The "const void *" is the SUS
2687 * definition, but that does not fly everywhere for the above
2688 * reasons. */
2689 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769 2690 int aint;
2691 if (SvPOKp(sv)) {
2d8e6c8d 2692 STRLEN l;
1215b447 2693 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2694 len = l;
1e422769 2695 }
56ee1660 2696 else {
a0d0e21e 2697 aint = (int)SvIV(sv);
1215b447 2698 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2699 len = sizeof(int);
2700 }
6ad3d225 2701 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2702 goto nuts2;
3280af22 2703 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2704 }
2705 break;
2706 }
2707 RETURN;
2708
2709nuts:
599cee73 2710 if (ckWARN(WARN_CLOSED))
bc37a18f 2711 report_evil_fh(gv, io, optype);
93189314 2712 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2713nuts2:
2714 RETPUSHUNDEF;
2715
2716#else
af51a00e 2717 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2718#endif
2719}
2720
a0d0e21e
LW		 2721PP(pp_getpeername)
2722{
a0d0e21e 2723#ifdef HAS_SOCKET
97aff369 2724 dVAR; dSP;
7452cf6a
AL		 2725 const int optype = PL_op->op_type;
2726 GV * const gv = (GV*)POPs;
2727 register IO * const io = GvIOn(gv);
2728 Sock_size_t len;
a0d0e21e
LW		 2729 SV *sv;
2730 int fd;
a0d0e21e
LW		 2731
2732 if (!io || !IoIFP(io))
2733 goto nuts;
2734
561b68a9 2735 sv = sv_2mortal(newSV(257));
748a9306 2736 (void)SvPOK_only(sv);
1e422769 2737 len = 256;
2738 SvCUR_set(sv, len);
748a9306 2739 *SvEND(sv) ='\0';
760ac839 2740 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2741 switch (optype) {
2742 case OP_GETSOCKNAME:
6ad3d225 2743 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2744 goto nuts2;
2745 break;
2746 case OP_GETPEERNAME:
6ad3d225 2747 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2748 goto nuts2;
490ab354
JH		 2749#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2750 {
2751 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";
2752 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2753 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2754 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2755 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2756 goto nuts2;
490ab354
JH		 2757 }
2758 }
2759#endif
a0d0e21e
LW		 2760 break;
2761 }
13826f2c
CS		 2762#ifdef BOGUS_GETNAME_RETURN
2763 /* Interactive Unix, getpeername() and getsockname()
2764 does not return valid namelen */
1e422769 2765 if (len == BOGUS_GETNAME_RETURN)
2766 len = sizeof(struct sockaddr);
13826f2c 2767#endif
1e422769 2768 SvCUR_set(sv, len);
748a9306 2769 *SvEND(sv) ='\0';
a0d0e21e
LW		 2770 PUSHs(sv);
2771 RETURN;
2772
2773nuts:
599cee73 2774 if (ckWARN(WARN_CLOSED))
bc37a18f 2775 report_evil_fh(gv, io, optype);
93189314 2776 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2777nuts2:
2778 RETPUSHUNDEF;
2779
2780#else
af51a00e 2781 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2782#endif
2783}
2784
2785/* Stat calls. */
2786
a0d0e21e
LW		 2787PP(pp_stat)
2788{
97aff369 2789 dVAR;
39644a26 2790 dSP;
10edeb5d 2791 GV *gv = NULL;
ad02613c 2792 IO *io;
54310121 2793 I32 gimme;
a0d0e21e
LW		 2794 I32 max = 13;
2795
533c011a 2796 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2797 gv = cGVOP_gv;
8a4e5b40 2798 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2799 if (gv != PL_defgv) {
5d329e6e 2800 do_fstat_warning_check:
5d3e98de 2801 if (ckWARN(WARN_IO))
9014280d 2802 Perl_warner(aTHX_ packWARN(WARN_IO),
38ddb0ef 2803 "lstat() on filehandle %s", gv ? GvENAME(gv) : "");
5d3e98de 2804 } else if (PL_laststype != OP_LSTAT)
8a4e5b40 2805 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2806 }
2807
748a9306 2808 do_fstat:
2dd78f96 2809 if (gv != PL_defgv) {
3280af22 2810 PL_laststype = OP_STAT;
2dd78f96 2811 PL_statgv = gv;
c69006e4 2812 sv_setpvn(PL_statname, "", 0);
5228a96c 2813 if(gv) {
ad02613c
SP		 2814 io = GvIO(gv);
2815 do_fstat_have_io:
5228a96c
SP		 2816 if (io) {
2817 if (IoIFP(io)) {
2818 PL_laststatval =
2819 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
2820 } else if (IoDIRP(io)) {
5228a96c 2821 PL_laststatval =
3497a01f 2822 PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
5228a96c
SP		 2823 } else {
2824 PL_laststatval = -1;
2825 }
2826 }
2827 }
2828 }
2829
9ddeeac9 2830 if (PL_laststatval < 0) {
2dd78f96
JH		 2831 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2832 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2833 max = 0;
9ddeeac9 2834 }
a0d0e21e
LW		 2835 }
2836 else {
7452cf6a 2837 SV* const sv = POPs;
748a9306 2838 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2839 gv = (GV*)sv;
748a9306 2840 goto do_fstat;
ad02613c
SP		 2841 } else if(SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2842 gv = (GV*)SvRV(sv);
2843 if (PL_op->op_type == OP_LSTAT)
2844 goto do_fstat_warning_check;
2845 goto do_fstat;
2846 } else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2847 io = (IO*)SvRV(sv);
2848 if (PL_op->op_type == OP_LSTAT)
2849 goto do_fstat_warning_check;
2850 goto do_fstat_have_io;
2851 }
2852
0510663f 2853 sv_setpv(PL_statname, SvPV_nolen_const(sv));
a0714e2c 2854 PL_statgv = NULL;
533c011a
NIS		 2855 PL_laststype = PL_op->op_type;
2856 if (PL_op->op_type == OP_LSTAT)
0510663f 2857 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2858 else
0510663f 2859 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2860 if (PL_laststatval < 0) {
0510663f 2861 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
9014280d 2862 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW		 2863 max = 0;
2864 }
2865 }
2866
54310121 2867 gimme = GIMME_V;
2868 if (gimme != G_ARRAY) {
2869 if (gimme != G_VOID)
2870 XPUSHs(boolSV(max));
2871 RETURN;
a0d0e21e
LW		 2872 }
2873 if (max) {
36477c24 2874 EXTEND(SP, max);
2875 EXTEND_MORTAL(max);
1ff81528
PL		 2876 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2877 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2878 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2879 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2880#if Uid_t_size > IVSIZE
2881 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2882#else
23dcd6c8 2883# if Uid_t_sign <= 0
1ff81528 2884 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2885# else
2886 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2887# endif
146174a9 2888#endif
301e8125 2889#if Gid_t_size > IVSIZE
146174a9
CB		 2890 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2891#else
23dcd6c8 2892# if Gid_t_sign <= 0
1ff81528 2893 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2894# else
2895 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2896# endif
146174a9 2897#endif
cbdc8872 2898#ifdef USE_STAT_RDEV
1ff81528 2899 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2900#else
84bafc02 2901 PUSHs(newSVpvs_flags("", SVs_TEMP));
cbdc8872 2902#endif
146174a9 2903#if Off_t_size > IVSIZE
4a9d6100 2904 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
146174a9 2905#else
1ff81528 2906 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2907#endif
cbdc8872 2908#ifdef BIG_TIME
172ae379
JH		 2909 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2910 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2911 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2912#else
aebaba0b
SH		 2913 PUSHs(sv_2mortal(newSViv((IV)PL_statcache.st_atime)));
2914 PUSHs(sv_2mortal(newSViv((IV)PL_statcache.st_mtime)));
2915 PUSHs(sv_2mortal(newSViv((IV)PL_statcache.st_ctime)));
cbdc8872 2916#endif
a0d0e21e 2917#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2918 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2919 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2920#else
84bafc02
NC		 2921 PUSHs(newSVpvs_flags("", SVs_TEMP));
2922 PUSHs(newSVpvs_flags("", SVs_TEMP));
a0d0e21e
LW		 2923#endif
2924 }
2925 RETURN;
2926}
2927
fbb0b3b3
RGS		 2928/* This macro is used by the stacked filetest operators :
2929 * if the previous filetest failed, short-circuit and pass its value.
2930 * Else, discard it from the stack and continue. --rgs
2931 */
2932#define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2933 if (TOPs == &PL_sv_no || TOPs == &PL_sv_undef) { RETURN; } \
2934 else { (void)POPs; PUTBACK; } \
2935 }
2936
a0d0e21e
LW		 2937PP(pp_ftrread)
2938{
97aff369 2939 dVAR;
9cad6237 2940 I32 result;
af9e49b4
NC		 2941 /* Not const, because things tweak this below. Not bool, because there's
2942 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2943#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2944 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2945 /* Giving some sort of initial value silences compilers. */
2946# ifdef R_OK
2947 int access_mode = R_OK;
2948# else
2949 int access_mode = 0;
2950# endif
5ff3f7a4 2951#else
af9e49b4
NC		 2952 /* access_mode is never used, but leaving use_access in makes the
2953 conditional compiling below much clearer. */
2954 I32 use_access = 0;
5ff3f7a4 2955#endif
af9e49b4 2956 int stat_mode = S_IRUSR;
a0d0e21e 2957
af9e49b4 2958 bool effective = FALSE;
2a3ff820 2959 dSP;
af9e49b4 2960
fbb0b3b3 2961 STACKED_FTEST_CHECK;
af9e49b4
NC		 2962
2963 switch (PL_op->op_type) {
2964 case OP_FTRREAD:
2965#if !(defined(HAS_ACCESS) && defined(R_OK))
2966 use_access = 0;
2967#endif
2968 break;
2969
2970 case OP_FTRWRITE:
5ff3f7a4 2971#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 2972 access_mode = W_OK;
5ff3f7a4 2973#else
af9e49b4 2974 use_access = 0;
5ff3f7a4 2975#endif
af9e49b4
NC		 2976 stat_mode = S_IWUSR;
2977 break;
a0d0e21e 2978
af9e49b4 2979 case OP_FTREXEC:
5ff3f7a4 2980#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 2981 access_mode = X_OK;
5ff3f7a4 2982#else
af9e49b4 2983 use_access = 0;
5ff3f7a4 2984#endif
af9e49b4
NC		 2985 stat_mode = S_IXUSR;
2986 break;
a0d0e21e 2987
af9e49b4 2988 case OP_FTEWRITE:
faee0e31 2989#ifdef PERL_EFF_ACCESS
af9e49b4 2990 access_mode = W_OK;
5ff3f7a4 2991#endif
af9e49b4
NC		 2992 stat_mode = S_IWUSR;
2993 /* Fall through */
a0d0e21e 2994
af9e49b4
NC		 2995 case OP_FTEREAD:
2996#ifndef PERL_EFF_ACCESS
2997 use_access = 0;
2998#endif
2999 effective = TRUE;
3000 break;
3001
3002
3003 case OP_FTEEXEC:
faee0e31 3004#ifdef PERL_EFF_ACCESS
af9e49b4 3005 access_mode = W_OK;
5ff3f7a4 3006#else
af9e49b4 3007 use_access = 0;
5ff3f7a4 3008#endif
af9e49b4
NC		 3009 stat_mode = S_IXUSR;
3010 effective = TRUE;
3011 break;
3012 }
a0d0e21e 3013
af9e49b4
NC		 3014 if (use_access) {
3015#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2c2f35ab 3016 const char *name = POPpx;
af9e49b4
NC		 3017 if (effective) {
3018# ifdef PERL_EFF_ACCESS
3019 result = PERL_EFF_ACCESS(name, access_mode);
3020# else
3021 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3022 OP_NAME(PL_op));
3023# endif
3024 }
3025 else {
3026# ifdef HAS_ACCESS
3027 result = access(name, access_mode);
3028# else
3029 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3030# endif
3031 }
5ff3f7a4
GS		 3032 if (result == 0)
3033 RETPUSHYES;
3034 if (result < 0)
3035 RETPUSHUNDEF;
3036 RETPUSHNO;
af9e49b4 3037#endif
22865c03 3038 }
af9e49b4 3039
cea2e8a9 3040 result = my_stat();
22865c03 3041 SPAGAIN;
a0d0e21e
LW		 3042 if (result < 0)
3043 RETPUSHUNDEF;
af9e49b4 3044 if (cando(stat_mode, effective, &PL_statcache))
a0d0e21e
LW		 3045 RETPUSHYES;
3046 RETPUSHNO;
3047}
3048
3049PP(pp_ftis)
3050{
97aff369 3051 dVAR;
fbb0b3b3 3052 I32 result;
d7f0a2f4 3053 const int op_type = PL_op->op_type;
2a3ff820 3054 dSP;
fbb0b3b3
RGS		 3055 STACKED_FTEST_CHECK;
3056 result = my_stat();
3057 SPAGAIN;
a0d0e21e
LW		 3058 if (result < 0)
3059 RETPUSHUNDEF;
d7f0a2f4
NC		 3060 if (op_type == OP_FTIS)
3061 RETPUSHYES;
957b0e1d 3062 {
d7f0a2f4
NC		 3063 /* You can't dTARGET inside OP_FTIS, because you'll get
3064 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3065 dTARGET;
d7f0a2f4 3066 switch (op_type) {
957b0e1d
NC		 3067 case OP_FTSIZE:
3068#if Off_t_size > IVSIZE
3069 PUSHn(PL_statcache.st_size);
3070#else
3071 PUSHi(PL_statcache.st_size);
3072#endif
3073 break;
3074 case OP_FTMTIME:
3075 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
3076 break;
3077 case OP_FTATIME:
3078 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
3079 break;
3080 case OP_FTCTIME:
3081 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
3082 break;
3083 }
3084 }
3085 RETURN;
a0d0e21e
LW		 3086}
3087
a0d0e21e
LW		 3088PP(pp_ftrowned)
3089{
97aff369 3090 dVAR;
fbb0b3b3 3091 I32 result;
2a3ff820 3092 dSP;
17ad201a
NC		 3093
3094 /* I believe that all these three are likely to be defined on most every
3095 system these days. */
3096#ifndef S_ISUID
3097 if(PL_op->op_type == OP_FTSUID)
3098 RETPUSHNO;
3099#endif
3100#ifndef S_ISGID
3101 if(PL_op->op_type == OP_FTSGID)
3102 RETPUSHNO;
3103#endif
3104#ifndef S_ISVTX
3105 if(PL_op->op_type == OP_FTSVTX)
3106 RETPUSHNO;
3107#endif
3108
fbb0b3b3
RGS		 3109 STACKED_FTEST_CHECK;
3110 result = my_stat();
3111 SPAGAIN;
a0d0e21e
LW		 3112 if (result < 0)
3113 RETPUSHUNDEF;
f1cb2d48
NC		 3114 switch (PL_op->op_type) {
3115 case OP_FTROWNED:
9ab9fa88 3116 if (PL_statcache.st_uid == PL_uid)
f1cb2d48
NC		 3117 RETPUSHYES;
3118 break;
3119 case OP_FTEOWNED:
3120 if (PL_statcache.st_uid == PL_euid)
3121 RETPUSHYES;
3122 break;
3123 case OP_FTZERO:
3124 if (PL_statcache.st_size == 0)
3125 RETPUSHYES;
3126 break;
3127 case OP_FTSOCK:
3128 if (S_ISSOCK(PL_statcache.st_mode))
3129 RETPUSHYES;
3130 break;
3131 case OP_FTCHR:
3132 if (S_ISCHR(PL_statcache.st_mode))
3133 RETPUSHYES;
3134 break;
3135 case OP_FTBLK:
3136 if (S_ISBLK(PL_statcache.st_mode))
3137 RETPUSHYES;
3138 break;
3139 case OP_FTFILE:
3140 if (S_ISREG(PL_statcache.st_mode))
3141 RETPUSHYES;
3142 break;
3143 case OP_FTDIR:
3144 if (S_ISDIR(PL_statcache.st_mode))
3145 RETPUSHYES;
3146 break;
3147 case OP_FTPIPE:
3148 if (S_ISFIFO(PL_statcache.st_mode))
3149 RETPUSHYES;
3150 break;
a0d0e21e 3151#ifdef S_ISUID
17ad201a
NC		 3152 case OP_FTSUID:
3153 if (PL_statcache.st_mode & S_ISUID)
3154 RETPUSHYES;
3155 break;
a0d0e21e 3156#endif
a0d0e21e 3157#ifdef S_ISGID
17ad201a
NC		 3158 case OP_FTSGID:
3159 if (PL_statcache.st_mode & S_ISGID)
3160 RETPUSHYES;
3161 break;
3162#endif
3163#ifdef S_ISVTX
3164 case OP_FTSVTX:
3165 if (PL_statcache.st_mode & S_ISVTX)
3166 RETPUSHYES;
3167 break;
a0d0e21e 3168#endif
17ad201a 3169 }
a0d0e21e
LW		 3170 RETPUSHNO;
3171}
3172
17ad201a 3173PP(pp_ftlink)
a0d0e21e 3174{
97aff369 3175 dVAR;
17ad201a 3176 I32 result = my_lstat();
39644a26 3177 dSP;
a0d0e21e
LW		 3178 if (result < 0)
3179 RETPUSHUNDEF;
17ad201a 3180 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e 3181 RETPUSHYES;
a0d0e21e
LW		 3182 RETPUSHNO;
3183}
3184
3185PP(pp_fttty)
3186{
97aff369 3187 dVAR;
39644a26 3188 dSP;
a0d0e21e
LW		 3189 int fd;
3190 GV *gv;
a0714e2c 3191 SV *tmpsv = NULL;
fb73857a 3192
fbb0b3b3
RGS		 3193 STACKED_FTEST_CHECK;
3194
533c011a 3195 if (PL_op->op_flags & OPf_REF)
146174a9 3196 gv = cGVOP_gv;
fb73857a 3197 else if (isGV(TOPs))
3198 gv = (GV*)POPs;
3199 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3200 gv = (GV*)SvRV(POPs);
a0d0e21e 3201 else
f776e3cd 3202 gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
fb73857a 3203
a0d0e21e 3204 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3205 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
7a5fd60d 3206 else if (tmpsv && SvOK(tmpsv)) {
349d4f2f 3207 const char *tmps = SvPV_nolen_const(tmpsv);
7a5fd60d
NC		 3208 if (isDIGIT(*tmps))
3209 fd = atoi(tmps);
3210 else
3211 RETPUSHUNDEF;
3212 }
a0d0e21e
LW		 3213 else
3214 RETPUSHUNDEF;
6ad3d225 3215 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3216 RETPUSHYES;
3217 RETPUSHNO;
3218}
3219
16d20bd9
AD		 3220#if defined(atarist) /* this will work with atariST. Configure will
3221 make guesses for other systems. */
3222# define FILE_base(f) ((f)->_base)
3223# define FILE_ptr(f) ((f)->_ptr)
3224# define FILE_cnt(f) ((f)->_cnt)
3225# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3226#endif
3227
3228PP(pp_fttext)
3229{
97aff369 3230 dVAR;
39644a26 3231 dSP;
a0d0e21e
LW		 3232 I32 i;
3233 I32 len;
3234 I32 odd = 0;
3235 STDCHAR tbuf[512];
3236 register STDCHAR *s;
3237 register IO *io;
5f05dabc 3238 register SV *sv;
3239 GV *gv;
146174a9 3240 PerlIO *fp;
a0d0e21e 3241
fbb0b3b3
RGS		 3242 STACKED_FTEST_CHECK;
3243
533c011a 3244 if (PL_op->op_flags & OPf_REF)
146174a9 3245 gv = cGVOP_gv;
5f05dabc 3246 else if (isGV(TOPs))
3247 gv = (GV*)POPs;
3248 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3249 gv = (GV*)SvRV(POPs);
3250 else
a0714e2c 3251 gv = NULL;
5f05dabc 3252
3253 if (gv) {
a0d0e21e 3254 EXTEND(SP, 1);
3280af22
NIS		 3255 if (gv == PL_defgv) {
3256 if (PL_statgv)
3257 io = GvIO(PL_statgv);
a0d0e21e 3258 else {
3280af22 3259 sv = PL_statname;
a0d0e21e
LW		 3260 goto really_filename;
3261 }
3262 }
3263 else {
3280af22
NIS		 3264 PL_statgv = gv;
3265 PL_laststatval = -1;
c69006e4 3266 sv_setpvn(PL_statname, "", 0);
3280af22 3267 io = GvIO(PL_statgv);
a0d0e21e
LW		 3268 }
3269 if (io && IoIFP(io)) {
5f05dabc 3270 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3271 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3272 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3273 if (PL_laststatval < 0)
5f05dabc 3274 RETPUSHUNDEF;
9cbac4c7 3275 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3276 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3277 RETPUSHNO;
3278 else
3279 RETPUSHYES;
9cbac4c7 3280 }
a20bf0c3 3281 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3282 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3283 if (i != EOF)
760ac839 3284 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3285 }
a20bf0c3 3286 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3287 RETPUSHYES;
a20bf0c3
JH		 3288 len = PerlIO_get_bufsiz(IoIFP(io));
3289 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3290 /* sfio can have large buffers - limit to 512 */
3291 if (len > 512)
3292 len = 512;
a0d0e21e
LW		 3293 }
3294 else {
2dd78f96 3295 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3296 gv = cGVOP_gv;
2dd78f96 3297 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3298 }
93189314 3299 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 3300 RETPUSHUNDEF;
3301 }
3302 }
3303 else {
3304 sv = POPs;
5f05dabc 3305 really_filename:
a0714e2c 3306 PL_statgv = NULL;
5c9aa243 3307 PL_laststype = OP_STAT;
d5263905 3308 sv_setpv(PL_statname, SvPV_nolen_const(sv));
aa07b2f6 3309 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
349d4f2f
NC		 3310 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3311 '\n'))
9014280d 3312 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
a0d0e21e
LW		 3313 RETPUSHUNDEF;
3314 }
146174a9
CB		 3315 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3316 if (PL_laststatval < 0) {
3317 (void)PerlIO_close(fp);
5f05dabc 3318 RETPUSHUNDEF;
146174a9 3319 }
bd61b366 3320 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
146174a9
CB		 3321 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3322 (void)PerlIO_close(fp);
a0d0e21e 3323 if (len <= 0) {
533c011a 3324 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3325 RETPUSHNO; /* special case NFS directories */
3326 RETPUSHYES; /* null file is anything */
3327 }
3328 s = tbuf;
3329 }
3330
3331 /* now scan s to look for textiness */
4633a7c4 3332 /* XXX ASCII dependent code */
a0d0e21e 3333
146174a9
CB		 3334#if defined(DOSISH) || defined(USEMYBINMODE)
3335 /* ignore trailing ^Z on short files */
58c0efa5 3336 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
146174a9
CB		 3337 --len;
3338#endif
3339
a0d0e21e
LW		 3340 for (i = 0; i < len; i++, s++) {
3341 if (!*s) { /* null never allowed in text */
3342 odd += len;
3343 break;
3344 }
9d116dd7 3345#ifdef EBCDIC
301e8125 3346 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3347 odd++;
3348#else
146174a9
CB		 3349 else if (*s & 128) {
3350#ifdef USE_LOCALE
2de3dbcc 3351 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3352 continue;
3353#endif
3354 /* utf8 characters don't count as odd */
fd400ab9 3355 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3356 int ulen = UTF8SKIP(s);
3357 if (ulen < len - i) {
3358 int j;
3359 for (j = 1; j < ulen; j++) {
fd400ab9 3360 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3361 goto not_utf8;
3362 }
3363 --ulen; /* loop does extra increment */
3364 s += ulen;
3365 i += ulen;
3366 continue;
3367 }
3368 }
3369 not_utf8:
3370 odd++;
146174a9 3371 }
a0d0e21e
LW		 3372 else if (*s < 32 &&
3373 *s != '\n' && *s != '\r' && *s != '\b' &&
3374 *s != '\t' && *s != '\f' && *s != 27)
3375 odd++;
9d116dd7 3376#endif
a0d0e21e
LW		 3377 }
3378
533c011a 3379 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3380 RETPUSHNO;
3381 else
3382 RETPUSHYES;
3383}
3384
a0d0e21e
LW		 3385/* File calls. */
3386
3387PP(pp_chdir)
3388{
97aff369 3389 dVAR; dSP; dTARGET;
c445ea15 3390 const char *tmps = NULL;
9a957fbc 3391 GV *gv = NULL;
a0d0e21e 3392
c4aca7d0 3393 if( MAXARG == 1 ) {
9a957fbc 3394 SV * const sv = POPs;
d4ac975e
GA		 3395 if (PL_op->op_flags & OPf_SPECIAL) {
3396 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3397 }
3398 else if (SvTYPE(sv) == SVt_PVGV) {
c4aca7d0
GA		 3399 gv = (GV*)sv;
3400 }
3401 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
3402 gv = (GV*)SvRV(sv);
3403 }
3404 else {
4ea561bc 3405 tmps = SvPV_nolen_const(sv);
c4aca7d0
GA		 3406 }
3407 }
35ae6b54 3408
c4aca7d0 3409 if( !gv && (!tmps || !*tmps) ) {
9a957fbc
AL		 3410 HV * const table = GvHVn(PL_envgv);
3411 SV **svp;
3412
a4fc7abc
AL		 3413 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3414 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
491527d0 3415#ifdef VMS
a4fc7abc 3416 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
491527d0 3417#endif
35ae6b54
MS		 3418 )
3419 {
3420 if( MAXARG == 1 )
9014280d 3421 deprecate("chdir('') or chdir(undef) as chdir()");
8c074e2a 3422 tmps = SvPV_nolen_const(*svp);
35ae6b54 3423 }
72f496dc 3424 else {
389ec635 3425 PUSHi(0);
b7ab37f8 3426 TAINT_PROPER("chdir");
389ec635
MS		 3427 RETURN;
3428 }
8ea155d1 3429 }
8ea155d1 3430
a0d0e21e 3431 TAINT_PROPER("chdir");
c4aca7d0
GA		 3432 if (gv) {
3433#ifdef HAS_FCHDIR
9a957fbc 3434 IO* const io = GvIO(gv);
c4aca7d0 3435 if (io) {
c08d6937 3436 if (IoDIRP(io)) {
3497a01f 3437 PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
c08d6937
SP		 3438 } else if (IoIFP(io)) {
3439 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
c4aca7d0
GA		 3440 }
3441 else {
4dc171f0
PD		 3442 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3443 report_evil_fh(gv, io, PL_op->op_type);
3444 SETERRNO(EBADF, RMS_IFI);
c4aca7d0
GA		 3445 PUSHi(0);
3446 }
3447 }
3448 else {
4dc171f0
PD		 3449 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3450 report_evil_fh(gv, io, PL_op->op_type);
3451 SETERRNO(EBADF,RMS_IFI);
c4aca7d0
GA		 3452 PUSHi(0);
3453 }
3454#else
3455 DIE(aTHX_ PL_no_func, "fchdir");
3456#endif
3457 }
3458 else
b8ffc8df 3459 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3460#ifdef VMS
3461 /* Clear the DEFAULT element of ENV so we'll get the new value
3462 * in the future. */
6b88bc9c 3463 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3464#endif
a0d0e21e
LW		 3465 RETURN;
3466}
3467
3468PP(pp_chown)
3469{
97aff369 3470 dVAR; dSP; dMARK; dTARGET;
605b9385 3471 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
76ffd3b9 3472
a0d0e21e 3473 SP = MARK;
b59aed67 3474 XPUSHi(value);
a0d0e21e 3475 RETURN;
a0d0e21e
LW		 3476}
3477
3478PP(pp_chroot)
3479{
a0d0e21e 3480#ifdef HAS_CHROOT
97aff369 3481 dVAR; dSP; dTARGET;
7452cf6a 3482 char * const tmps = POPpx;
a0d0e21e
LW		 3483 TAINT_PROPER("chroot");
3484 PUSHi( chroot(tmps) >= 0 );
3485 RETURN;
3486#else
cea2e8a9 3487 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3488#endif
3489}