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[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW		 1/* pp_sys.c
2 *
be3c0a43 3 * Copyright (c) 1991-2002, Larry Wall
a0d0e21e
LW		 4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
7 *
8 */
9
10/*
11 * But only a short way ahead its floor and the walls on either side were
12 * cloven by a great fissure, out of which the red glare came, now leaping
13 * up, now dying down into darkness; and all the while far below there was
14 * a rumour and a trouble as of great engines throbbing and labouring.
15 */
16
17#include "EXTERN.h"
864dbfa3 18#define PERL_IN_PP_SYS_C
a0d0e21e
LW		 19#include "perl.h"
20
f1066039
JH		 21#ifdef I_SHADOW
22/* Shadow password support for solaris - pdo@cs.umd.edu
23 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH		 24 * The API is from SysV.
25 *
26 * There are at least two more shadow interfaces,
27 * see the comments in pp_gpwent().
28 *
29 * --jhi */
30# ifdef __hpux__
c529f79d 31/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 32 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH		 33# undef MAXINT
34# endif
35# include <shadow.h>
8c0bfa08
PB		 36#endif
37
301e8125
NIS		 38#ifdef HAS_SYSCALL
39#ifdef __cplusplus
8ac85365
NIS		 40extern "C" int syscall(unsigned long,...);
41#endif
42#endif
43
76c32331 44#ifdef I_SYS_WAIT
45# include <sys/wait.h>
46#endif
47
48#ifdef I_SYS_RESOURCE
49# include <sys/resource.h>
16d20bd9 50#endif
a0d0e21e 51
2986a63f
JH		 52#ifdef NETWARE
53NETDB_DEFINE_CONTEXT
54#endif
55
a0d0e21e 56#ifdef HAS_SELECT
1e743fda
JH		 57# ifdef I_SYS_SELECT
58# include <sys/select.h>
59# endif
a0d0e21e 60#endif
a0d0e21e 61
dc45a647
MB		 62/* XXX Configure test needed.
63 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS		 64 applications, see "extern int errno in perl.h". Creating such
65 a test requires taking into account the differences between
66 compiling multithreaded and singlethreaded ($ccflags et al).
67 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 68*/
cb50131a 69#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW		 70extern int h_errno;
71#endif
72
73#ifdef HAS_PASSWD
74# ifdef I_PWD
75# include <pwd.h>
76# else
fd8cd3a3 77# if !defined(VMS)
20ce7b12
GS		 78 struct passwd *getpwnam (char *);
79 struct passwd *getpwuid (Uid_t);
fd8cd3a3 80# endif
a0d0e21e 81# endif
28e8609d 82# ifdef HAS_GETPWENT
20ce7b12 83 struct passwd *getpwent (void);
28e8609d 84# endif
a0d0e21e
LW		 85#endif
86
87#ifdef HAS_GROUP
88# ifdef I_GRP
89# include <grp.h>
90# else
20ce7b12
GS		 91 struct group *getgrnam (char *);
92 struct group *getgrgid (Gid_t);
a0d0e21e 93# endif
28e8609d 94# ifdef HAS_GETGRENT
20ce7b12 95 struct group *getgrent (void);
28e8609d 96# endif
a0d0e21e
LW		 97#endif
98
99#ifdef I_UTIME
3730b96e 100# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 101# include <sys/utime.h>
102# else
103# include <utime.h>
104# endif
a0d0e21e 105#endif
a0d0e21e 106
cbdc8872 107#ifdef HAS_CHSIZE
cd52b7b2 108# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
109# undef my_chsize
110# endif
6ad3d225 111# define my_chsize PerlLIO_chsize
cbdc8872 112#endif
113
ff68c719 114#ifdef HAS_FLOCK
115# define FLOCK flock
116#else /* no flock() */
117
36477c24 118 /* fcntl.h might not have been included, even if it exists, because
119 the current Configure only sets I_FCNTL if it's needed to pick up
120 the *_OK constants. Make sure it has been included before testing
121 the fcntl() locking constants. */
122# if defined(HAS_FCNTL) && !defined(I_FCNTL)
123# include <fcntl.h>
124# endif
125
9d9004a9 126# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 127# define FLOCK fcntl_emulate_flock
128# define FCNTL_EMULATE_FLOCK
129# else /* no flock() or fcntl(F_SETLK,...) */
130# ifdef HAS_LOCKF
131# define FLOCK lockf_emulate_flock
132# define LOCKF_EMULATE_FLOCK
133# endif /* lockf */
134# endif /* no flock() or fcntl(F_SETLK,...) */
135
136# ifdef FLOCK
20ce7b12 137 static int FLOCK (int, int);
ff68c719 138
139 /*
140 * These are the flock() constants. Since this sytems doesn't have
141 * flock(), the values of the constants are probably not available.
142 */
143# ifndef LOCK_SH
144# define LOCK_SH 1
145# endif
146# ifndef LOCK_EX
147# define LOCK_EX 2
148# endif
149# ifndef LOCK_NB
150# define LOCK_NB 4
151# endif
152# ifndef LOCK_UN
153# define LOCK_UN 8
154# endif
155# endif /* emulating flock() */
156
157#endif /* no flock() */
55497cff 158
85ab1d1d
JH		 159#define ZBTLEN 10
160static char zero_but_true[ZBTLEN + 1] = "0 but true";
161
5ff3f7a4
GS		 162#if defined(I_SYS_ACCESS) && !defined(R_OK)
163# include <sys/access.h>
164#endif
165
c529f79d
CB		 166#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
167# define FD_CLOEXEC 1 /* NeXT needs this */
168#endif
169
5ff3f7a4
GS		 170#undef PERL_EFF_ACCESS_R_OK /* EFFective uid/gid ACCESS R_OK */
171#undef PERL_EFF_ACCESS_W_OK
172#undef PERL_EFF_ACCESS_X_OK
173
174/* F_OK unused: if stat() cannot find it... */
175
176#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 177 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
5ff3f7a4
GS		 178# define PERL_EFF_ACCESS_R_OK(p) (access((p), R_OK | EFF_ONLY_OK))
179# define PERL_EFF_ACCESS_W_OK(p) (access((p), W_OK | EFF_ONLY_OK))
180# define PERL_EFF_ACCESS_X_OK(p) (access((p), X_OK | EFF_ONLY_OK))
181#endif
182
183#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_EACCESS)
3813c136 184# ifdef I_SYS_SECURITY
5ff3f7a4
GS		 185# include <sys/security.h>
186# endif
c955f117
JH		 187# ifdef ACC_SELF
188 /* HP SecureWare */
189# define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK, ACC_SELF))
190# define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK, ACC_SELF))
191# define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK, ACC_SELF))
192# else
193 /* SCO */
194# define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK))
195# define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK))
196# define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK))
197# endif
5ff3f7a4
GS		 198#endif
199
200#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 201 /* AIX */
5ff3f7a4
GS		 202# define PERL_EFF_ACCESS_R_OK(p) (accessx((p), R_OK, ACC_SELF))
203# define PERL_EFF_ACCESS_W_OK(p) (accessx((p), W_OK, ACC_SELF))
204# define PERL_EFF_ACCESS_X_OK(p) (accessx((p), X_OK, ACC_SELF))
205#endif
206
327c3667
GS		 207#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) \
208 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
209 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 210/* The Hard Way. */
327c3667 211STATIC int
7f4774ae 212S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 213{
5ff3f7a4
GS		 214 Uid_t ruid = getuid();
215 Uid_t euid = geteuid();
216 Gid_t rgid = getgid();
217 Gid_t egid = getegid();
218 int res;
219
146174a9 220 LOCK_CRED_MUTEX;
5ff3f7a4 221#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 222 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 223#else
224#ifdef HAS_SETREUID
225 if (setreuid(euid, ruid))
226#else
227#ifdef HAS_SETRESUID
228 if (setresuid(euid, ruid, (Uid_t)-1))
229#endif
230#endif
cea2e8a9 231 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 232#endif
233
234#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 235 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS		 236#else
237#ifdef HAS_SETREGID
238 if (setregid(egid, rgid))
239#else
240#ifdef HAS_SETRESGID
241 if (setresgid(egid, rgid, (Gid_t)-1))
242#endif
243#endif
cea2e8a9 244 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 245#endif
246
247 res = access(path, mode);
248
249#ifdef HAS_SETREUID
250 if (setreuid(ruid, euid))
251#else
252#ifdef HAS_SETRESUID
253 if (setresuid(ruid, euid, (Uid_t)-1))
254#endif
255#endif
cea2e8a9 256 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 257
258#ifdef HAS_SETREGID
259 if (setregid(rgid, egid))
260#else
261#ifdef HAS_SETRESGID
262 if (setresgid(rgid, egid, (Gid_t)-1))
263#endif
264#endif
cea2e8a9 265 Perl_croak(aTHX_ "leaving effective gid failed");
146174a9 266 UNLOCK_CRED_MUTEX;
5ff3f7a4
GS		 267
268 return res;
269}
270# define PERL_EFF_ACCESS_R_OK(p) (emulate_eaccess((p), R_OK))
271# define PERL_EFF_ACCESS_W_OK(p) (emulate_eaccess((p), W_OK))
272# define PERL_EFF_ACCESS_X_OK(p) (emulate_eaccess((p), X_OK))
273#endif
274
275#if !defined(PERL_EFF_ACCESS_R_OK)
76ffd3b9
IZ		 276/* With it or without it: anyway you get a warning: either that
277 it is unused, or it is declared static and never defined.
278 */
327c3667 279STATIC int
7f4774ae 280S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 281{
cea2e8a9 282 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 283 /*NOTREACHED*/
284 return -1;
285}
286#endif
287
a0d0e21e
LW		 288PP(pp_backtick)
289{
39644a26 290 dSP; dTARGET;
760ac839 291 PerlIO *fp;
2d8e6c8d
GS		 292 STRLEN n_a;
293 char *tmps = POPpx;
54310121 294 I32 gimme = GIMME_V;
16fe6d59 295 char *mode = "r";
54310121 296
a0d0e21e 297 TAINT_PROPER("``");
16fe6d59
GS		 298 if (PL_op->op_private & OPpOPEN_IN_RAW)
299 mode = "rb";
300 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
301 mode = "rt";
302 fp = PerlProc_popen(tmps, mode);
a0d0e21e 303 if (fp) {
ac27b0f5
NIS		 304 char *type = NULL;
305 if (PL_curcop->cop_io) {
306 type = SvPV_nolen(PL_curcop->cop_io);
307 }
ac27b0f5
NIS		 308 if (type && *type)
309 PerlIO_apply_layers(aTHX_ fp,mode,type);
310
54310121 311 if (gimme == G_VOID) {
96827780
MB		 312 char tmpbuf[256];
313 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
54310121 314 /*SUPPRESS 530*/
315 ;
316 }
317 else if (gimme == G_SCALAR) {
aa689395 318 sv_setpv(TARG, ""); /* note that this preserves previous buffer */
a0d0e21e
LW		 319 while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
320 /*SUPPRESS 530*/
321 ;
322 XPUSHs(TARG);
aa689395 323 SvTAINTED_on(TARG);
a0d0e21e
LW		 324 }
325 else {
326 SV *sv;
327
328 for (;;) {
8d6dde3e 329 sv = NEWSV(56, 79);
a0d0e21e
LW		 330 if (sv_gets(sv, fp, 0) == Nullch) {
331 SvREFCNT_dec(sv);
332 break;
333 }
334 XPUSHs(sv_2mortal(sv));
335 if (SvLEN(sv) - SvCUR(sv) > 20) {
336 SvLEN_set(sv, SvCUR(sv)+1);
337 Renew(SvPVX(sv), SvLEN(sv), char);
338 }
aa689395 339 SvTAINTED_on(sv);
a0d0e21e
LW		 340 }
341 }
6ad3d225 342 STATUS_NATIVE_SET(PerlProc_pclose(fp));
aa689395 343 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 344 }
345 else {
f86702cc 346 STATUS_NATIVE_SET(-1);
54310121 347 if (gimme == G_SCALAR)
a0d0e21e
LW		 348 RETPUSHUNDEF;
349 }
350
351 RETURN;
352}
353
354PP(pp_glob)
355{
356 OP *result;
f5284f61
IZ		 357 tryAMAGICunTARGET(iter, -1);
358
71686f12
GS		 359 /* Note that we only ever get here if File::Glob fails to load
360 * without at the same time croaking, for some reason, or if
361 * perl was built with PERL_EXTERNAL_GLOB */
362
a0d0e21e 363 ENTER;
a0d0e21e 364
c90c0ff4 365#ifndef VMS
3280af22 366 if (PL_tainting) {
7bac28a0 367 /*
368 * The external globbing program may use things we can't control,
369 * so for security reasons we must assume the worst.
370 */
371 TAINT;
22c35a8c 372 taint_proper(PL_no_security, "glob");
7bac28a0 373 }
c90c0ff4 374#endif /* !VMS */
7bac28a0 375
3280af22
NIS		 376 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
377 PL_last_in_gv = (GV*)*PL_stack_sp--;
a0d0e21e 378
3280af22 379 SAVESPTR(PL_rs); /* This is not permanent, either. */
79cb57f6 380 PL_rs = sv_2mortal(newSVpvn("\000", 1));
c07a80fd 381#ifndef DOSISH
382#ifndef CSH
6b88bc9c 383 *SvPVX(PL_rs) = '\n';
a0d0e21e 384#endif /* !CSH */
55497cff 385#endif /* !DOSISH */
c07a80fd 386
a0d0e21e
LW		 387 result = do_readline();
388 LEAVE;
389 return result;
390}
391
a0d0e21e
LW		 392PP(pp_rcatline)
393{
146174a9 394 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 395 return do_readline();
396}
397
398PP(pp_warn)
399{
39644a26 400 dSP; dMARK;
06bf62c7 401 SV *tmpsv;
a0d0e21e 402 char *tmps;
06bf62c7 403 STRLEN len;
a0d0e21e
LW		 404 if (SP - MARK != 1) {
405 dTARGET;
3280af22 406 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 407 tmpsv = TARG;
a0d0e21e
LW		 408 SP = MARK + 1;
409 }
410 else {
06bf62c7 411 tmpsv = TOPs;
a0d0e21e 412 }
06bf62c7
GS		 413 tmps = SvPV(tmpsv, len);
414 if (!tmps || !len) {
4e6ea2c3
GS		 415 SV *error = ERRSV;
416 (void)SvUPGRADE(error, SVt_PV);
417 if (SvPOK(error) && SvCUR(error))
418 sv_catpv(error, "\t...caught");
06bf62c7
GS		 419 tmpsv = error;
420 tmps = SvPV(tmpsv, len);
a0d0e21e 421 }
06bf62c7
GS		 422 if (!tmps || !len)
423 tmpsv = sv_2mortal(newSVpvn("Warning: something's wrong", 26));
424
cb50131a 425 Perl_warn(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 426 RETSETYES;
427}
428
429PP(pp_die)
430{
39644a26 431 dSP; dMARK;
a0d0e21e 432 char *tmps;
06bf62c7
GS		 433 SV *tmpsv;
434 STRLEN len;
435 bool multiarg = 0;
96e176bf
CL		 436#ifdef VMS
437 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
438#endif
a0d0e21e
LW		 439 if (SP - MARK != 1) {
440 dTARGET;
3280af22 441 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7
GS		 442 tmpsv = TARG;
443 tmps = SvPV(tmpsv, len);
444 multiarg = 1;
a0d0e21e
LW		 445 SP = MARK + 1;
446 }
447 else {
4e6ea2c3 448 tmpsv = TOPs;
bf484eac 449 tmps = (SvROK(tmpsv) && PL_in_eval) ? Nullch : SvPV(tmpsv, len);
a0d0e21e 450 }
06bf62c7 451 if (!tmps || !len) {
4e6ea2c3
GS		 452 SV *error = ERRSV;
453 (void)SvUPGRADE(error, SVt_PV);
06bf62c7
GS		 454 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
455 if (!multiarg)
4e6ea2c3 456 SvSetSV(error,tmpsv);
06bf62c7 457 else if (sv_isobject(error)) {
05423cc9
GS		 458 HV *stash = SvSTASH(SvRV(error));
459 GV *gv = gv_fetchmethod(stash, "PROPAGATE");
460 if (gv) {
146174a9 461 SV *file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
b448e4fe 462 SV *line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
05423cc9
GS		 463 EXTEND(SP, 3);
464 PUSHMARK(SP);
465 PUSHs(error);
466 PUSHs(file);
467 PUSHs(line);
468 PUTBACK;
864dbfa3
GS		 469 call_sv((SV*)GvCV(gv),
470 G_SCALAR|G_EVAL|G_KEEPERR);
3280af22 471 sv_setsv(error,*PL_stack_sp--);
05423cc9
GS		 472 }
473 }
b3fe4827 474 DIE(aTHX_ Nullformat);
4e6ea2c3
GS		 475 }
476 else {
477 if (SvPOK(error) && SvCUR(error))
478 sv_catpv(error, "\t...propagated");
06bf62c7
GS		 479 tmpsv = error;
480 tmps = SvPV(tmpsv, len);
4e6ea2c3 481 }
a0d0e21e 482 }
06bf62c7
GS		 483 if (!tmps || !len)
484 tmpsv = sv_2mortal(newSVpvn("Died", 4));
485
cb50131a 486 DIE(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 487}
488
489/* I/O. */
490
491PP(pp_open)
492{
39644a26 493 dSP;
a567e93b
NIS		 494 dMARK; dORIGMARK;
495 dTARGET;
a0d0e21e
LW		 496 GV *gv;
497 SV *sv;
5b468f54 498 IO *io;
a0d0e21e
LW		 499 char *tmps;
500 STRLEN len;
4592e6ca 501 MAGIC *mg;
a567e93b 502 bool ok;
a0d0e21e 503
a567e93b 504 gv = (GV *)*++MARK;
5f05dabc 505 if (!isGV(gv))
cea2e8a9 506 DIE(aTHX_ PL_no_usym, "filehandle");
5b468f54 507 if ((io = GvIOp(gv)))
36477c24 508 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 509
5b468f54 510 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
a567e93b
NIS		 511 /* Method's args are same as ours ... */
512 /* ... except handle is replaced by the object */
5b468f54 513 *MARK-- = SvTIED_obj((SV*)io, mg);
a567e93b 514 PUSHMARK(MARK);
4592e6ca
NIS		 515 PUTBACK;
516 ENTER;
864dbfa3 517 call_method("OPEN", G_SCALAR);
4592e6ca
NIS		 518 LEAVE;
519 SPAGAIN;
520 RETURN;
521 }
522
a567e93b
NIS		 523 if (MARK < SP) {
524 sv = *++MARK;
525 }
526 else {
527 sv = GvSV(gv);
528 }
529
a0d0e21e 530 tmps = SvPV(sv, len);
a567e93b
NIS		 531 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp, MARK+1, (SP-MARK));
532 SP = ORIGMARK;
533 if (ok)
3280af22
NIS		 534 PUSHi( (I32)PL_forkprocess );
535 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 536 PUSHi(0);
537 else
538 RETPUSHUNDEF;
539 RETURN;
540}
541
542PP(pp_close)
543{
39644a26 544 dSP;
a0d0e21e 545 GV *gv;
5b468f54 546 IO *io;
1d603a67 547 MAGIC *mg;
a0d0e21e
LW		 548
549 if (MAXARG == 0)
3280af22 550 gv = PL_defoutgv;
a0d0e21e
LW		 551 else
552 gv = (GV*)POPs;
1d603a67 553
5b468f54
AMS		 554 if (gv && (io = GvIO(gv))
555 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
556 {
1d603a67 557 PUSHMARK(SP);
5b468f54 558 XPUSHs(SvTIED_obj((SV*)io, mg));
1d603a67
GB		 559 PUTBACK;
560 ENTER;
864dbfa3 561 call_method("CLOSE", G_SCALAR);
1d603a67
GB		 562 LEAVE;
563 SPAGAIN;
564 RETURN;
565 }
a0d0e21e 566 EXTEND(SP, 1);
54310121 567 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 568 RETURN;
569}
570
571PP(pp_pipe_op)
572{
a0d0e21e 573#ifdef HAS_PIPE
9cad6237 574 dSP;
a0d0e21e
LW		 575 GV *rgv;
576 GV *wgv;
577 register IO *rstio;
578 register IO *wstio;
579 int fd[2];
580
581 wgv = (GV*)POPs;
582 rgv = (GV*)POPs;
583
584 if (!rgv || !wgv)
585 goto badexit;
586
4633a7c4 587 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
cea2e8a9 588 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 589 rstio = GvIOn(rgv);
590 wstio = GvIOn(wgv);
591
592 if (IoIFP(rstio))
593 do_close(rgv, FALSE);
594 if (IoIFP(wstio))
595 do_close(wgv, FALSE);
596
6ad3d225 597 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 598 goto badexit;
599
760ac839
LW		 600 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
601 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
a0d0e21e 602 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 603 IoTYPE(rstio) = IoTYPE_RDONLY;
604 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 605
606 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 607 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
6ad3d225 608 else PerlLIO_close(fd[0]);
760ac839 609 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
6ad3d225 610 else PerlLIO_close(fd[1]);
a0d0e21e
LW		 611 goto badexit;
612 }
4771b018
GS		 613#if defined(HAS_FCNTL) && defined(F_SETFD)
614 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
615 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
616#endif
a0d0e21e
LW		 617 RETPUSHYES;
618
619badexit:
620 RETPUSHUNDEF;
621#else
cea2e8a9 622 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 623#endif
624}
625
626PP(pp_fileno)
627{
39644a26 628 dSP; dTARGET;
a0d0e21e
LW		 629 GV *gv;
630 IO *io;
760ac839 631 PerlIO *fp;
4592e6ca
NIS		 632 MAGIC *mg;
633
a0d0e21e
LW		 634 if (MAXARG < 1)
635 RETPUSHUNDEF;
636 gv = (GV*)POPs;
4592e6ca 637
5b468f54
AMS		 638 if (gv && (io = GvIO(gv))
639 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
640 {
4592e6ca 641 PUSHMARK(SP);
5b468f54 642 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 643 PUTBACK;
644 ENTER;
864dbfa3 645 call_method("FILENO", G_SCALAR);
4592e6ca
NIS		 646 LEAVE;
647 SPAGAIN;
648 RETURN;
649 }
650
c289d2f7
JH		 651 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
652 /* Can't do this because people seem to do things like
653 defined(fileno($foo)) to check whether $foo is a valid fh.
654 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
655 report_evil_fh(gv, io, PL_op->op_type);
656 */
a0d0e21e 657 RETPUSHUNDEF;
c289d2f7
JH		 658 }
659
760ac839 660 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 661 RETURN;
662}
663
664PP(pp_umask)
665{
39644a26 666 dSP; dTARGET;
d7e492a4 667#ifdef HAS_UMASK
761237fe 668 Mode_t anum;
a0d0e21e 669
a0d0e21e 670 if (MAXARG < 1) {
6ad3d225
GS		 671 anum = PerlLIO_umask(0);
672 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 673 }
674 else
6ad3d225 675 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 676 TAINT_PROPER("umask");
677 XPUSHi(anum);
678#else
eec2d3df
GS		 679 /* Only DIE if trying to restrict permissions on `user' (self).
680 * Otherwise it's harmless and more useful to just return undef
681 * since 'group' and 'other' concepts probably don't exist here. */
682 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 683 DIE(aTHX_ "umask not implemented");
6b88bc9c 684 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 685#endif
686 RETURN;
687}
688
689PP(pp_binmode)
690{
39644a26 691 dSP;
a0d0e21e
LW		 692 GV *gv;
693 IO *io;
760ac839 694 PerlIO *fp;
4592e6ca 695 MAGIC *mg;
16fe6d59 696 SV *discp = Nullsv;
a0d0e21e
LW		 697
698 if (MAXARG < 1)
699 RETPUSHUNDEF;
60382766 700 if (MAXARG > 1) {
16fe6d59 701 discp = POPs;
60382766 702 }
a0d0e21e 703
301e8125 704 gv = (GV*)POPs;
4592e6ca 705
5b468f54
AMS		 706 if (gv && (io = GvIO(gv))
707 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
708 {
4592e6ca 709 PUSHMARK(SP);
5b468f54 710 XPUSHs(SvTIED_obj((SV*)io, mg));
16fe6d59
GS		 711 if (discp)
712 XPUSHs(discp);
4592e6ca
NIS		 713 PUTBACK;
714 ENTER;
864dbfa3 715 call_method("BINMODE", G_SCALAR);
4592e6ca
NIS		 716 LEAVE;
717 SPAGAIN;
718 RETURN;
719 }
a0d0e21e
LW		 720
721 EXTEND(SP, 1);
50f846a7 722 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7
JH		 723 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
724 report_evil_fh(gv, io, PL_op->op_type);
50f846a7
SC		 725 RETPUSHUNDEF;
726 }
a0d0e21e 727
60382766
NIS		 728 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
729 (discp) ? SvPV_nolen(discp) : Nullch))
a0d0e21e
LW		 730 RETPUSHYES;
731 else
732 RETPUSHUNDEF;
a0d0e21e
LW		 733}
734
735PP(pp_tie)
736{
39644a26 737 dSP;
e336de0d 738 dMARK;
a0d0e21e
LW		 739 SV *varsv;
740 HV* stash;
741 GV *gv;
a0d0e21e 742 SV *sv;
3280af22 743 I32 markoff = MARK - PL_stack_base;
a0d0e21e 744 char *methname;
14befaf4 745 int how = PERL_MAGIC_tied;
e336de0d 746 U32 items;
2d8e6c8d 747 STRLEN n_a;
a0d0e21e 748
e336de0d 749 varsv = *++MARK;
6b05c17a
NIS		 750 switch(SvTYPE(varsv)) {
751 case SVt_PVHV:
752 methname = "TIEHASH";
03c6e78a 753 HvEITER((HV *)varsv) = Null(HE *);
6b05c17a
NIS		 754 break;
755 case SVt_PVAV:
756 methname = "TIEARRAY";
757 break;
758 case SVt_PVGV:
7fb37951
AMS		 759#ifdef GV_UNIQUE_CHECK
760 if (GvUNIQUE((GV*)varsv)) {
761 Perl_croak(aTHX_ "Attempt to tie unique GV");
5bd07a3d
DM		 762 }
763#endif
6b05c17a 764 methname = "TIEHANDLE";
14befaf4 765 how = PERL_MAGIC_tiedscalar;
5b468f54
AMS		 766 /* For tied filehandles, we apply tiedscalar magic to the IO
767 slot of the GP rather than the GV itself. AMS 20010812 */
768 if (!GvIOp(varsv))
769 GvIOp(varsv) = newIO();
770 varsv = (SV *)GvIOp(varsv);
6b05c17a
NIS		 771 break;
772 default:
773 methname = "TIESCALAR";
14befaf4 774 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 775 break;
776 }
e336de0d
GS		 777 items = SP - MARK++;
778 if (sv_isobject(*MARK)) {
6b05c17a 779 ENTER;
e788e7d3 780 PUSHSTACKi(PERLSI_MAGIC);
e336de0d
GS		 781 PUSHMARK(SP);
782 EXTEND(SP,items);
783 while (items--)
784 PUSHs(*MARK++);
785 PUTBACK;
864dbfa3 786 call_method(methname, G_SCALAR);
301e8125 787 }
6b05c17a 788 else {
864dbfa3 789 /* Not clear why we don't call call_method here too.
6b05c17a
NIS		 790 * perhaps to get different error message ?
791 */
e336de0d 792 stash = gv_stashsv(*MARK, FALSE);
6b05c17a 793 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
cea2e8a9 794 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%s\"",
301e8125 795 methname, SvPV(*MARK,n_a));
6b05c17a
NIS		 796 }
797 ENTER;
e788e7d3 798 PUSHSTACKi(PERLSI_MAGIC);
e336de0d
GS		 799 PUSHMARK(SP);
800 EXTEND(SP,items);
801 while (items--)
802 PUSHs(*MARK++);
803 PUTBACK;
864dbfa3 804 call_sv((SV*)GvCV(gv), G_SCALAR);
6b05c17a 805 }
a0d0e21e
LW		 806 SPAGAIN;
807
808 sv = TOPs;
d3acc0f7 809 POPSTACK;
a0d0e21e 810 if (sv_isobject(sv)) {
33c27489 811 sv_unmagic(varsv, how);
ae21d580
JH		 812 /* Croak if a self-tie on an aggregate is attempted. */
813 if (varsv == SvRV(sv) &&
814 (SvTYPE(sv) == SVt_PVAV ||
815 SvTYPE(sv) == SVt_PVHV))
816 Perl_croak(aTHX_
817 "Self-ties of arrays and hashes are not supported");
68a4a7e4 818 sv_magic(varsv, sv, how, Nullch, 0);
a0d0e21e
LW		 819 }
820 LEAVE;
3280af22 821 SP = PL_stack_base + markoff;
a0d0e21e
LW		 822 PUSHs(sv);
823 RETURN;
824}
825
826PP(pp_untie)
827{
39644a26 828 dSP;
5b468f54 829 MAGIC *mg;
33c27489 830 SV *sv = POPs;
14befaf4
DM		 831 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
832 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 833
5b468f54
AMS		 834 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
835 RETPUSHYES;
836
837 if ((mg = SvTIED_mg(sv, how))) {
a29a5827
NIS		 838 SV *obj = SvRV(mg->mg_obj);
839 GV *gv;
840 CV *cv = NULL;
fa2b88e0
JS		 841 if (obj) {
842 if ((gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE)) &&
843 isGV(gv) && (cv = GvCV(gv))) {
844 PUSHMARK(SP);
845 XPUSHs(SvTIED_obj((SV*)gv, mg));
846 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
847 PUTBACK;
848 ENTER;
849 call_sv((SV *)cv, G_VOID);
850 LEAVE;
851 SPAGAIN;
852 }
853 else if (ckWARN(WARN_UNTIE)) {
854 if (mg && SvREFCNT(obj) > 1)
855 Perl_warner(aTHX_ WARN_UNTIE,
856 "untie attempted while %"UVuf" inner references still exist",
857 (UV)SvREFCNT(obj) - 1 ) ;
858 }
cbdc8872 859 }
fa2b88e0 860 sv_unmagic(sv, how) ;
cbdc8872 861 }
55497cff 862 RETPUSHYES;
a0d0e21e
LW		 863}
864
c07a80fd 865PP(pp_tied)
866{
39644a26 867 dSP;
5b468f54 868 MAGIC *mg;
33c27489 869 SV *sv = POPs;
14befaf4
DM		 870 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
871 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54
AMS		 872
873 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
874 RETPUSHUNDEF;
c07a80fd 875
155aba94 876 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 877 SV *osv = SvTIED_obj(sv, mg);
878 if (osv == mg->mg_obj)
879 osv = sv_mortalcopy(osv);
880 PUSHs(osv);
881 RETURN;
c07a80fd 882 }
c07a80fd 883 RETPUSHUNDEF;
884}
885
a0d0e21e
LW		 886PP(pp_dbmopen)
887{
39644a26 888 dSP;
a0d0e21e
LW		 889 HV *hv;
890 dPOPPOPssrl;
891 HV* stash;
892 GV *gv;
a0d0e21e
LW		 893 SV *sv;
894
895 hv = (HV*)POPs;
896
3280af22 897 sv = sv_mortalcopy(&PL_sv_no);
a0d0e21e
LW		 898 sv_setpv(sv, "AnyDBM_File");
899 stash = gv_stashsv(sv, FALSE);
8ebc5c01 900 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 901 PUTBACK;
864dbfa3 902 require_pv("AnyDBM_File.pm");
a0d0e21e 903 SPAGAIN;
8ebc5c01 904 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 905 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 906 }
907
57d3b86d 908 ENTER;
924508f0 909 PUSHMARK(SP);
6b05c17a 910
924508f0 911 EXTEND(SP, 5);
a0d0e21e
LW		 912 PUSHs(sv);
913 PUSHs(left);
914 if (SvIV(right))
b448e4fe 915 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
a0d0e21e 916 else
b448e4fe 917 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
a0d0e21e 918 PUSHs(right);
57d3b86d 919 PUTBACK;
864dbfa3 920 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 921 SPAGAIN;
922
923 if (!sv_isobject(TOPs)) {
924508f0
GS		 924 SP--;
925 PUSHMARK(SP);
a0d0e21e
LW		 926 PUSHs(sv);
927 PUSHs(left);
b448e4fe 928 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
a0d0e21e 929 PUSHs(right);
a0d0e21e 930 PUTBACK;
864dbfa3 931 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 932 SPAGAIN;
933 }
934
6b05c17a 935 if (sv_isobject(TOPs)) {
14befaf4
DM		 936 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
937 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, Nullch, 0);
6b05c17a 938 }
a0d0e21e
LW		 939 LEAVE;
940 RETURN;
941}
942
943PP(pp_dbmclose)
944{
cea2e8a9 945 return pp_untie();
a0d0e21e
LW		 946}
947
948PP(pp_sselect)
949{
a0d0e21e 950#ifdef HAS_SELECT
9cad6237 951 dSP; dTARGET;
a0d0e21e
LW		 952 register I32 i;
953 register I32 j;
954 register char *s;
955 register SV *sv;
65202027 956 NV value;
a0d0e21e
LW		 957 I32 maxlen = 0;
958 I32 nfound;
959 struct timeval timebuf;
960 struct timeval *tbuf = &timebuf;
961 I32 growsize;
962 char *fd_sets[4];
2d8e6c8d 963 STRLEN n_a;
a0d0e21e
LW		 964#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
965 I32 masksize;
966 I32 offset;
967 I32 k;
968
969# if BYTEORDER & 0xf0000
970# define ORDERBYTE (0x88888888 - BYTEORDER)
971# else
972# define ORDERBYTE (0x4444 - BYTEORDER)
973# endif
974
975#endif
976
977 SP -= 4;
978 for (i = 1; i <= 3; i++) {
979 if (!SvPOK(SP[i]))
980 continue;
981 j = SvCUR(SP[i]);
982 if (maxlen < j)
983 maxlen = j;
984 }
985
5ff3f7a4 986/* little endians can use vecs directly */
a0d0e21e 987#if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
5ff3f7a4 988# if SELECT_MIN_BITS > 1
f2da832e
JH		 989 /* If SELECT_MIN_BITS is greater than one we most probably will want
990 * to align the sizes with SELECT_MIN_BITS/8 because for example
991 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
f556e5b9 992 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
8f1f23e8 993 * on (sets/tests/clears bits) is 32 bits. */
f2da832e 994 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
5ff3f7a4 995# else
4633a7c4 996 growsize = sizeof(fd_set);
5ff3f7a4
GS		 997# endif
998# else
999# ifdef NFDBITS
a0d0e21e 1000
5ff3f7a4
GS		 1001# ifndef NBBY
1002# define NBBY 8
1003# endif
a0d0e21e
LW		 1004
1005 masksize = NFDBITS / NBBY;
5ff3f7a4 1006# else
a0d0e21e 1007 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1008# endif
a0d0e21e
LW		 1009 growsize = maxlen + (masksize - (maxlen % masksize));
1010 Zero(&fd_sets[0], 4, char*);
1011#endif
1012
1013 sv = SP[4];
1014 if (SvOK(sv)) {
1015 value = SvNV(sv);
1016 if (value < 0.0)
1017 value = 0.0;
1018 timebuf.tv_sec = (long)value;
65202027 1019 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1020 timebuf.tv_usec = (long)(value * 1000000.0);
1021 }
1022 else
1023 tbuf = Null(struct timeval*);
1024
1025 for (i = 1; i <= 3; i++) {
1026 sv = SP[i];
1027 if (!SvOK(sv)) {
1028 fd_sets[i] = 0;
1029 continue;
1030 }
1031 else if (!SvPOK(sv))
2d8e6c8d 1032 SvPV_force(sv,n_a); /* force string conversion */
a0d0e21e
LW		 1033 j = SvLEN(sv);
1034 if (j < growsize) {
1035 Sv_Grow(sv, growsize);
a0d0e21e 1036 }
c07a80fd 1037 j = SvCUR(sv);
1038 s = SvPVX(sv) + j;
1039 while (++j <= growsize) {
1040 *s++ = '\0';
1041 }
1042
a0d0e21e
LW		 1043#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1044 s = SvPVX(sv);
1045 New(403, fd_sets[i], growsize, char);
1046 for (offset = 0; offset < growsize; offset += masksize) {
1047 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1048 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1049 }
1050#else
1051 fd_sets[i] = SvPVX(sv);
1052#endif
1053 }
1054
6ad3d225 1055 nfound = PerlSock_select(
a0d0e21e
LW		 1056 maxlen * 8,
1057 (Select_fd_set_t) fd_sets[1],
1058 (Select_fd_set_t) fd_sets[2],
1059 (Select_fd_set_t) fd_sets[3],
1060 tbuf);
1061 for (i = 1; i <= 3; i++) {
1062 if (fd_sets[i]) {
1063 sv = SP[i];
1064#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1065 s = SvPVX(sv);
1066 for (offset = 0; offset < growsize; offset += masksize) {
1067 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1068 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1069 }
1070 Safefree(fd_sets[i]);
1071#endif
1072 SvSETMAGIC(sv);
1073 }
1074 }
1075
1076 PUSHi(nfound);
1077 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1078 value = (NV)(timebuf.tv_sec) +
1079 (NV)(timebuf.tv_usec) / 1000000.0;
3280af22 1080 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 1081 sv_setnv(sv, value);
1082 }
1083 RETURN;
1084#else
cea2e8a9 1085 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1086#endif
1087}
1088
4633a7c4 1089void
864dbfa3 1090Perl_setdefout(pTHX_ GV *gv)
4633a7c4
LW		 1091{
1092 if (gv)
1093 (void)SvREFCNT_inc(gv);
3280af22
NIS		 1094 if (PL_defoutgv)
1095 SvREFCNT_dec(PL_defoutgv);
1096 PL_defoutgv = gv;
4633a7c4
LW		 1097}
1098
a0d0e21e
LW		 1099PP(pp_select)
1100{
39644a26 1101 dSP; dTARGET;
4633a7c4
LW		 1102 GV *newdefout, *egv;
1103 HV *hv;
1104
533c011a 1105 newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
4633a7c4 1106
3280af22 1107 egv = GvEGV(PL_defoutgv);
4633a7c4 1108 if (!egv)
3280af22 1109 egv = PL_defoutgv;
4633a7c4
LW		 1110 hv = GvSTASH(egv);
1111 if (! hv)
3280af22 1112 XPUSHs(&PL_sv_undef);
4633a7c4 1113 else {
cbdc8872 1114 GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1115 if (gvp && *gvp == egv) {
f7aaccc2 1116 gv_efullname4(TARG, PL_defoutgv, Nullch, TRUE);
f86702cc 1117 XPUSHTARG;
1118 }
1119 else {
1120 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1121 }
4633a7c4
LW		 1122 }
1123
1124 if (newdefout) {
ded8aa31
GS		 1125 if (!GvIO(newdefout))
1126 gv_IOadd(newdefout);
4633a7c4
LW		 1127 setdefout(newdefout);
1128 }
1129
a0d0e21e
LW		 1130 RETURN;
1131}
1132
1133PP(pp_getc)
1134{
39644a26 1135 dSP; dTARGET;
a0d0e21e 1136 GV *gv;
90133b69 1137 IO *io = NULL;
2ae324a7 1138 MAGIC *mg;
a0d0e21e 1139
32da55ab 1140 if (MAXARG == 0)
3280af22 1141 gv = PL_stdingv;
a0d0e21e
LW		 1142 else
1143 gv = (GV*)POPs;
2ae324a7 1144
5b468f54
AMS		 1145 if (gv && (io = GvIO(gv))
1146 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1147 {
54310121 1148 I32 gimme = GIMME_V;
2ae324a7 1149 PUSHMARK(SP);
5b468f54 1150 XPUSHs(SvTIED_obj((SV*)io, mg));
2ae324a7 1151 PUTBACK;
1152 ENTER;
864dbfa3 1153 call_method("GETC", gimme);
2ae324a7 1154 LEAVE;
1155 SPAGAIN;
54310121 1156 if (gimme == G_SCALAR)
1157 SvSetMagicSV_nosteal(TARG, TOPs);
2ae324a7 1158 RETURN;
1159 }
90133b69 1160 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
97e322ff
RGS		 1161 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)
1162 && (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY)))
90133b69 1163 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1164 RETPUSHUNDEF;
90133b69 1165 }
bbce6d69 1166 TAINT;
a0d0e21e 1167 sv_setpv(TARG, " ");
9bc64814 1168 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1169 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1170 /* Find out how many bytes the char needs */
1171 Size_t len = UTF8SKIP(SvPVX(TARG));
1172 if (len > 1) {
1173 SvGROW(TARG,len+1);
1174 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1175 SvCUR_set(TARG,1+len);
1176 }
1177 SvUTF8_on(TARG);
1178 }
a0d0e21e
LW		 1179 PUSHTARG;
1180 RETURN;
1181}
1182
1183PP(pp_read)
1184{
cea2e8a9 1185 return pp_sysread();
a0d0e21e
LW		 1186}
1187
76e3520e 1188STATIC OP *
cea2e8a9 1189S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1190{
c09156bb 1191 register PERL_CONTEXT *cx;
54310121 1192 I32 gimme = GIMME_V;
a0d0e21e
LW		 1193 AV* padlist = CvPADLIST(cv);
1194 SV** svp = AvARRAY(padlist);
1195
1196 ENTER;
1197 SAVETMPS;
1198
1199 push_return(retop);
146174a9 1200 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
a0d0e21e 1201 PUSHFORMAT(cx);
146174a9 1202 SAVEVPTR(PL_curpad);
3280af22 1203 PL_curpad = AvARRAY((AV*)svp[1]);
a0d0e21e 1204
4633a7c4 1205 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1206 return CvSTART(cv);
1207}
1208
1209PP(pp_enterwrite)
1210{
39644a26 1211 dSP;
a0d0e21e
LW		 1212 register GV *gv;
1213 register IO *io;
1214 GV *fgv;
1215 CV *cv;
1216
1217 if (MAXARG == 0)
3280af22 1218 gv = PL_defoutgv;
a0d0e21e
LW		 1219 else {
1220 gv = (GV*)POPs;
1221 if (!gv)
3280af22 1222 gv = PL_defoutgv;
a0d0e21e
LW		 1223 }
1224 EXTEND(SP, 1);
1225 io = GvIO(gv);
1226 if (!io) {
1227 RETPUSHNO;
1228 }
1229 if (IoFMT_GV(io))
1230 fgv = IoFMT_GV(io);
1231 else
1232 fgv = gv;
1233
1234 cv = GvFORM(fgv);
a0d0e21e 1235 if (!cv) {
2dd78f96 1236 char *name = NULL;
a0d0e21e 1237 if (fgv) {
748a9306 1238 SV *tmpsv = sv_newmortal();
43693395 1239 gv_efullname4(tmpsv, fgv, Nullch, FALSE);
2dd78f96 1240 name = SvPV_nolen(tmpsv);
a0d0e21e 1241 }
2dd78f96
JH		 1242 if (name && *name)
1243 DIE(aTHX_ "Undefined format \"%s\" called", name);
cea2e8a9 1244 DIE(aTHX_ "Not a format reference");
a0d0e21e 1245 }
44a8e56a 1246 if (CvCLONE(cv))
1247 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1248
44a8e56a 1249 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1250 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1251}
1252
1253PP(pp_leavewrite)
1254{
39644a26 1255 dSP;
a0d0e21e
LW		 1256 GV *gv = cxstack[cxstack_ix].blk_sub.gv;
1257 register IO *io = GvIOp(gv);
760ac839
LW		 1258 PerlIO *ofp = IoOFP(io);
1259 PerlIO *fp;
a0d0e21e
LW		 1260 SV **newsp;
1261 I32 gimme;
c09156bb 1262 register PERL_CONTEXT *cx;
a0d0e21e 1263
760ac839 1264 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1265 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
7ef822cd
JH		 1266 if (!io || !ofp)
1267 goto forget_top;
3280af22
NIS		 1268 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1269 PL_formtarget != PL_toptarget)
a0d0e21e 1270 {
4633a7c4
LW		 1271 GV *fgv;
1272 CV *cv;
a0d0e21e
LW		 1273 if (!IoTOP_GV(io)) {
1274 GV *topgv;
46fc3d4c 1275 SV *topname;
a0d0e21e
LW		 1276
1277 if (!IoTOP_NAME(io)) {
1278 if (!IoFMT_NAME(io))
1279 IoFMT_NAME(io) = savepv(GvNAME(gv));
cea2e8a9 1280 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", IoFMT_NAME(io)));
46fc3d4c 1281 topgv = gv_fetchpv(SvPVX(topname), FALSE, SVt_PVFM);
748a9306 1282 if ((topgv && GvFORM(topgv)) ||
a0d0e21e 1283 !gv_fetchpv("top",FALSE,SVt_PVFM))
46fc3d4c 1284 IoTOP_NAME(io) = savepv(SvPVX(topname));
a0d0e21e
LW		 1285 else
1286 IoTOP_NAME(io) = savepv("top");
1287 }
1288 topgv = gv_fetchpv(IoTOP_NAME(io),FALSE, SVt_PVFM);
1289 if (!topgv || !GvFORM(topgv)) {
1290 IoLINES_LEFT(io) = 100000000;
1291 goto forget_top;
1292 }
1293 IoTOP_GV(io) = topgv;
1294 }
748a9306
LW		 1295 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1296 I32 lines = IoLINES_LEFT(io);
3280af22 1297 char *s = SvPVX(PL_formtarget);
8e07c86e
AD		 1298 if (lines <= 0) /* Yow, header didn't even fit!!! */
1299 goto forget_top;
748a9306
LW		 1300 while (lines-- > 0) {
1301 s = strchr(s, '\n');
1302 if (!s)
1303 break;
1304 s++;
1305 }
1306 if (s) {
d75029d0
NIS		 1307 STRLEN save = SvCUR(PL_formtarget);
1308 SvCUR_set(PL_formtarget, s - SvPVX(PL_formtarget));
1309 do_print(PL_formtarget, ofp);
1310 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1311 sv_chop(PL_formtarget, s);
1312 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1313 }
1314 }
a0d0e21e 1315 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1316 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1317 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1318 IoPAGE(io)++;
3280af22 1319 PL_formtarget = PL_toptarget;
748a9306 1320 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1321 fgv = IoTOP_GV(io);
1322 if (!fgv)
cea2e8a9 1323 DIE(aTHX_ "bad top format reference");
4633a7c4 1324 cv = GvFORM(fgv);
2dd78f96
JH		 1325 {
1326 char *name = NULL;
1327 if (!cv) {
1328 SV *sv = sv_newmortal();
1329 gv_efullname4(sv, fgv, Nullch, FALSE);
1330 name = SvPV_nolen(sv);
1331 }
1332 if (name && *name)
1333 DIE(aTHX_ "Undefined top format \"%s\" called",name);
1334 /* why no:
1335 else
1336 DIE(aTHX_ "Undefined top format called");
1337 ?*/
4633a7c4 1338 }
44a8e56a 1339 if (CvCLONE(cv))
1340 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
533c011a 1341 return doform(cv,gv,PL_op);
a0d0e21e
LW		 1342 }
1343
1344 forget_top:
3280af22 1345 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1346 POPFORMAT(cx);
1347 LEAVE;
1348
1349 fp = IoOFP(io);
1350 if (!fp) {
599cee73 1351 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
cb50131a 1352 if (IoIFP(io)) {
2dd78f96
JH		 1353 /* integrate with report_evil_fh()? */
1354 char *name = NULL;
1355 if (isGV(gv)) {
1356 SV* sv = sv_newmortal();
1357 gv_efullname4(sv, gv, Nullch, FALSE);
1358 name = SvPV_nolen(sv);
1359 }
1360 if (name && *name)
1361 Perl_warner(aTHX_ WARN_IO,
1362 "Filehandle %s opened only for input", name);
1363 else
1364 Perl_warner(aTHX_ WARN_IO,
1365 "Filehandle opened only for input");
cb50131a 1366 }
599cee73 1367 else if (ckWARN(WARN_CLOSED))
bc37a18f 1368 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1369 }
3280af22 1370 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1371 }
1372 else {
3280af22 1373 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1374 if (ckWARN(WARN_IO))
cea2e8a9 1375 Perl_warner(aTHX_ WARN_IO, "page overflow");
a0d0e21e 1376 }
d75029d0 1377 if (!do_print(PL_formtarget, fp))
3280af22 1378 PUSHs(&PL_sv_no);
a0d0e21e 1379 else {
3280af22
NIS		 1380 FmLINES(PL_formtarget) = 0;
1381 SvCUR_set(PL_formtarget, 0);
1382 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1383 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1384 (void)PerlIO_flush(fp);
3280af22 1385 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1386 }
1387 }
9cbac4c7 1388 /* bad_ofp: */
3280af22 1389 PL_formtarget = PL_bodytarget;
a0d0e21e
LW		 1390 PUTBACK;
1391 return pop_return();
1392}
1393
1394PP(pp_prtf)
1395{
39644a26 1396 dSP; dMARK; dORIGMARK;
a0d0e21e
LW		 1397 GV *gv;
1398 IO *io;
760ac839 1399 PerlIO *fp;
26db47c4 1400 SV *sv;
46fc3d4c 1401 MAGIC *mg;
a0d0e21e 1402
533c011a 1403 if (PL_op->op_flags & OPf_STACKED)
a0d0e21e
LW		 1404 gv = (GV*)*++MARK;
1405 else
3280af22 1406 gv = PL_defoutgv;
46fc3d4c 1407
5b468f54
AMS		 1408 if (gv && (io = GvIO(gv))
1409 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1410 {
46fc3d4c 1411 if (MARK == ORIGMARK) {
4352c267 1412 MEXTEND(SP, 1);
46fc3d4c 1413 ++MARK;
1414 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1415 ++SP;
1416 }
1417 PUSHMARK(MARK - 1);
5b468f54 1418 *MARK = SvTIED_obj((SV*)io, mg);
46fc3d4c 1419 PUTBACK;
1420 ENTER;
864dbfa3 1421 call_method("PRINTF", G_SCALAR);
46fc3d4c 1422 LEAVE;
1423 SPAGAIN;
1424 MARK = ORIGMARK + 1;
1425 *MARK = *SP;
1426 SP = MARK;
1427 RETURN;
1428 }
1429
26db47c4 1430 sv = NEWSV(0,0);
a0d0e21e 1431 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1432 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1433 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 1434 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 1435 goto just_say_no;
1436 }
1437 else if (!(fp = IoOFP(io))) {
599cee73 1438 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
2dd78f96 1439 /* integrate with report_evil_fh()? */
cb50131a 1440 if (IoIFP(io)) {
2dd78f96
JH		 1441 char *name = NULL;
1442 if (isGV(gv)) {
1443 gv_efullname4(sv, gv, Nullch, FALSE);
1444 name = SvPV_nolen(sv);
1445 }
1446 if (name && *name)
1447 Perl_warner(aTHX_ WARN_IO,
1448 "Filehandle %s opened only for input", name);
1449 else
1450 Perl_warner(aTHX_ WARN_IO,
1451 "Filehandle opened only for input");
cb50131a 1452 }
599cee73 1453 else if (ckWARN(WARN_CLOSED))
bc37a18f 1454 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1455 }
91487cfc 1456 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
a0d0e21e
LW		 1457 goto just_say_no;
1458 }
1459 else {
1460 do_sprintf(sv, SP - MARK, MARK + 1);
1461 if (!do_print(sv, fp))
1462 goto just_say_no;
1463
1464 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1465 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1466 goto just_say_no;
1467 }
1468 SvREFCNT_dec(sv);
1469 SP = ORIGMARK;
3280af22 1470 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1471 RETURN;
1472
1473 just_say_no:
1474 SvREFCNT_dec(sv);
1475 SP = ORIGMARK;
3280af22 1476 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1477 RETURN;
1478}
1479
c07a80fd 1480PP(pp_sysopen)
1481{
39644a26 1482 dSP;
c07a80fd 1483 GV *gv;
c07a80fd 1484 SV *sv;
1485 char *tmps;
1486 STRLEN len;
1487 int mode, perm;
1488
1489 if (MAXARG > 3)
1490 perm = POPi;
1491 else
1492 perm = 0666;
1493 mode = POPi;
1494 sv = POPs;
1495 gv = (GV *)POPs;
1496
4592e6ca
NIS		 1497 /* Need TIEHANDLE method ? */
1498
c07a80fd 1499 tmps = SvPV(sv, len);
1500 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1501 IoLINES(GvIOp(gv)) = 0;
3280af22 1502 PUSHs(&PL_sv_yes);
c07a80fd 1503 }
1504 else {
3280af22 1505 PUSHs(&PL_sv_undef);
c07a80fd 1506 }
1507 RETURN;
1508}
1509
a0d0e21e
LW		 1510PP(pp_sysread)
1511{
39644a26 1512 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1513 int offset;
1514 GV *gv;
1515 IO *io;
1516 char *buffer;
5b54f415 1517 SSize_t length;
eb5c063a 1518 SSize_t count;
1e422769 1519 Sock_size_t bufsize;
748a9306 1520 SV *bufsv;
a0d0e21e 1521 STRLEN blen;
2ae324a7 1522 MAGIC *mg;
eb5c063a
NIS		 1523 int fp_utf8;
1524 Size_t got = 0;
1525 Size_t wanted;
1d636c13 1526 bool charstart = FALSE;
87330c3c
JH		 1527 STRLEN charskip = 0;
1528 STRLEN skip = 0;
a0d0e21e
LW		 1529
1530 gv = (GV*)*++MARK;
5b468f54
AMS		 1531 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1532 && gv && (io = GvIO(gv))
1533 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
137443ea 1534 {
2ae324a7 1535 SV *sv;
1536
1537 PUSHMARK(MARK-1);
5b468f54 1538 *MARK = SvTIED_obj((SV*)io, mg);
2ae324a7 1539 ENTER;
864dbfa3 1540 call_method("READ", G_SCALAR);
2ae324a7 1541 LEAVE;
1542 SPAGAIN;
1543 sv = POPs;
1544 SP = ORIGMARK;
1545 PUSHs(sv);
1546 RETURN;
1547 }
1548
a0d0e21e
LW		 1549 if (!gv)
1550 goto say_undef;
748a9306 1551 bufsv = *++MARK;
ff68c719 1552 if (! SvOK(bufsv))
1553 sv_setpvn(bufsv, "", 0);
a0d0e21e 1554 length = SvIVx(*++MARK);
748a9306 1555 SETERRNO(0,0);
a0d0e21e
LW		 1556 if (MARK < SP)
1557 offset = SvIVx(*++MARK);
1558 else
1559 offset = 0;
1560 io = GvIO(gv);
1561 if (!io || !IoIFP(io))
1562 goto say_undef;
0064a8a9 1563 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1564 buffer = SvPVutf8_force(bufsv, blen);
eb5c063a
NIS		 1565 /* UTF8 may not have been set if they are all low bytes */
1566 SvUTF8_on(bufsv);
7d59b7e4
NIS		 1567 }
1568 else {
1569 buffer = SvPV_force(bufsv, blen);
1570 }
1571 if (length < 0)
1572 DIE(aTHX_ "Negative length");
eb5c063a 1573 wanted = length;
7d59b7e4 1574
d0965105
JH		 1575 charstart = TRUE;
1576 charskip = 0;
87330c3c 1577 skip = 0;
d0965105 1578
a0d0e21e 1579#ifdef HAS_SOCKET
533c011a 1580 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1581 char namebuf[MAXPATHLEN];
eec2d3df 1582#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE)
490ab354
JH		 1583 bufsize = sizeof (struct sockaddr_in);
1584#else
46fc3d4c 1585 bufsize = sizeof namebuf;
490ab354 1586#endif
abf95952
IZ		 1587#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1588 if (bufsize >= 256)
1589 bufsize = 255;
1590#endif
748a9306 1591 buffer = SvGROW(bufsv, length+1);
bbce6d69 1592 /* 'offset' means 'flags' here */
eb5c063a 1593 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
46fc3d4c 1594 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1595 if (count < 0)
a0d0e21e 1596 RETPUSHUNDEF;
4107cc59
OF		 1597#ifdef EPOC
1598 /* Bogus return without padding */
1599 bufsize = sizeof (struct sockaddr_in);
1600#endif
eb5c063a 1601 SvCUR_set(bufsv, count);
748a9306
LW		 1602 *SvEND(bufsv) = '\0';
1603 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1604 if (fp_utf8)
1605 SvUTF8_on(bufsv);
748a9306 1606 SvSETMAGIC(bufsv);
aac0dd9a 1607 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1608 if (!(IoFLAGS(io) & IOf_UNTAINT))
1609 SvTAINTED_on(bufsv);
a0d0e21e 1610 SP = ORIGMARK;
46fc3d4c 1611 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1612 PUSHs(TARG);
1613 RETURN;
1614 }
1615#else
911d147d 1616 if (PL_op->op_type == OP_RECV)
cea2e8a9 1617 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1618#endif
eb5c063a
NIS		 1619 if (DO_UTF8(bufsv)) {
1620 /* offset adjust in characters not bytes */
1621 blen = sv_len_utf8(bufsv);
7d59b7e4 1622 }
bbce6d69 1623 if (offset < 0) {
1624 if (-offset > blen)
cea2e8a9 1625 DIE(aTHX_ "Offset outside string");
bbce6d69 1626 offset += blen;
1627 }
eb5c063a
NIS		 1628 if (DO_UTF8(bufsv)) {
1629 /* convert offset-as-chars to offset-as-bytes */
1630 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1631 }
1632 more_bytes:
cd52b7b2 1633 bufsize = SvCUR(bufsv);
eb5c063a 1634 buffer = SvGROW(bufsv, length+offset+1);
cd52b7b2 1635 if (offset > bufsize) { /* Zero any newly allocated space */
1636 Zero(buffer+bufsize, offset-bufsize, char);
1637 }
eb5c063a
NIS		 1638 buffer = buffer + offset;
1639
533c011a 1640 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1641#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1642 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1643 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1644 buffer, length, 0);
a7092146
GS		 1645 }
1646 else
1647#endif
1648 {
eb5c063a
NIS		 1649 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1650 buffer, length);
a7092146 1651 }
a0d0e21e
LW		 1652 }
1653 else
1654#ifdef HAS_SOCKET__bad_code_maybe
50952442 1655 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1656 char namebuf[MAXPATHLEN];
490ab354
JH		 1657#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1658 bufsize = sizeof (struct sockaddr_in);
1659#else
46fc3d4c 1660 bufsize = sizeof namebuf;
490ab354 1661#endif
eb5c063a 1662 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1663 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1664 }
1665 else
1666#endif
3b02c43c 1667 {
eb5c063a
NIS		 1668 count = PerlIO_read(IoIFP(io), buffer, length);
1669 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1670 if (count == 0 && PerlIO_error(IoIFP(io)))
1671 count = -1;
3b02c43c 1672 }
eb5c063a 1673 if (count < 0) {
a00b5bd3 1674 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
af8c498a 1675 {
2dd78f96
JH		 1676 /* integrate with report_evil_fh()? */
1677 char *name = NULL;
1678 if (isGV(gv)) {
1679 SV* sv = sv_newmortal();
1680 gv_efullname4(sv, gv, Nullch, FALSE);
1681 name = SvPV_nolen(sv);
1682 }
1683 if (name && *name)
1684 Perl_warner(aTHX_ WARN_IO,
1685 "Filehandle %s opened only for output", name);
1686 else
1687 Perl_warner(aTHX_ WARN_IO,
1688 "Filehandle opened only for output");
af8c498a 1689 }
a0d0e21e 1690 goto say_undef;
af8c498a 1691 }
eb5c063a 1692 SvCUR_set(bufsv, count+(buffer - SvPVX(bufsv)));
748a9306
LW		 1693 *SvEND(bufsv) = '\0';
1694 (void)SvPOK_only(bufsv);
0064a8a9 1695 if (fp_utf8 && !IN_BYTES) {
eb5c063a
NIS		 1696 /* Look at utf8 we got back and count the characters */
1697 char *bend = buffer + count;
1698 while (buffer < bend) {
d0965105
JH		 1699 if (charstart) {
1700 skip = UTF8SKIP(buffer);
1701 charskip = 0;
1702 }
1703 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1704 /* partial character - try for rest of it */
1705 length = skip - (bend-buffer);
1706 offset = bend - SvPVX(bufsv);
d0965105
JH		 1707 charstart = FALSE;
1708 charskip += count;
eb5c063a
NIS		 1709 goto more_bytes;
1710 }
1711 else {
1712 got++;
1713 buffer += skip;
d0965105
JH		 1714 charstart = TRUE;
1715 charskip = 0;
eb5c063a
NIS		 1716 }
1717 }
1718 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1719 provided amount read (count) was what was requested (length)
1720 */
1721 if (got < wanted && count == length) {
d0965105 1722 length = wanted - got;
eb5c063a
NIS		 1723 offset = bend - SvPVX(bufsv);
1724 goto more_bytes;
1725 }
1726 /* return value is character count */
1727 count = got;
1728 SvUTF8_on(bufsv);
1729 }
748a9306 1730 SvSETMAGIC(bufsv);
aac0dd9a 1731 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1732 if (!(IoFLAGS(io) & IOf_UNTAINT))
1733 SvTAINTED_on(bufsv);
a0d0e21e 1734 SP = ORIGMARK;
eb5c063a 1735 PUSHi(count);
a0d0e21e
LW		 1736 RETURN;
1737
1738 say_undef:
1739 SP = ORIGMARK;
1740 RETPUSHUNDEF;
1741}
1742
1743PP(pp_syswrite)
1744{
39644a26 1745 dSP;
092bebab
JH		 1746 int items = (SP - PL_stack_base) - TOPMARK;
1747 if (items == 2) {
9f089d78 1748 SV *sv;
092bebab 1749 EXTEND(SP, 1);
9f089d78
SB		 1750 sv = sv_2mortal(newSViv(sv_len(*SP)));
1751 PUSHs(sv);
092bebab
JH		 1752 PUTBACK;
1753 }
cea2e8a9 1754 return pp_send();
a0d0e21e
LW		 1755}
1756
1757PP(pp_send)
1758{
39644a26 1759 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1760 GV *gv;
1761 IO *io;
748a9306 1762 SV *bufsv;
a0d0e21e 1763 char *buffer;
8c99d73e
GS		 1764 Size_t length;
1765 SSize_t retval;
a0d0e21e 1766 STRLEN blen;
1d603a67 1767 MAGIC *mg;
a0d0e21e
LW		 1768
1769 gv = (GV*)*++MARK;
14befaf4 1770 if (PL_op->op_type == OP_SYSWRITE
5b468f54
AMS		 1771 && gv && (io = GvIO(gv))
1772 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
14befaf4 1773 {
1d603a67
GB		 1774 SV *sv;
1775
1776 PUSHMARK(MARK-1);
5b468f54 1777 *MARK = SvTIED_obj((SV*)io, mg);
1d603a67 1778 ENTER;
864dbfa3 1779 call_method("WRITE", G_SCALAR);
1d603a67
GB		 1780 LEAVE;
1781 SPAGAIN;
1782 sv = POPs;
1783 SP = ORIGMARK;
1784 PUSHs(sv);
1785 RETURN;
1786 }
a0d0e21e
LW		 1787 if (!gv)
1788 goto say_undef;
748a9306 1789 bufsv = *++MARK;
8c99d73e 1790#if Size_t_size > IVSIZE
3c001241 1791 length = (Size_t)SvNVx(*++MARK);
146174a9 1792#else
3c001241 1793 length = (Size_t)SvIVx(*++MARK);
146174a9 1794#endif
3c001241 1795 if ((SSize_t)length < 0)
cea2e8a9 1796 DIE(aTHX_ "Negative length");
748a9306 1797 SETERRNO(0,0);
a0d0e21e
LW		 1798 io = GvIO(gv);
1799 if (!io || !IoIFP(io)) {
8c99d73e 1800 retval = -1;
bc37a18f
RG		 1801 if (ckWARN(WARN_CLOSED))
1802 report_evil_fh(gv, io, PL_op->op_type);
7d59b7e4
NIS		 1803 goto say_undef;
1804 }
1805
1806 if (PerlIO_isutf8(IoIFP(io))) {
1807 buffer = SvPVutf8(bufsv, blen);
a0d0e21e 1808 }
7d59b7e4
NIS		 1809 else {
1810 if (DO_UTF8(bufsv))
1811 sv_utf8_downgrade(bufsv, FALSE);
1812 buffer = SvPV(bufsv, blen);
1813 }
1814
1815 if (PL_op->op_type == OP_SYSWRITE) {
1816 IV offset;
1817 if (DO_UTF8(bufsv)) {
1818 /* length and offset are in chars */
1819 blen = sv_len_utf8(bufsv);
1820 }
bbce6d69 1821 if (MARK < SP) {
a0d0e21e 1822 offset = SvIVx(*++MARK);
bbce6d69 1823 if (offset < 0) {
1824 if (-offset > blen)
cea2e8a9 1825 DIE(aTHX_ "Offset outside string");
bbce6d69 1826 offset += blen;
fb73857a 1827 } else if (offset >= blen && blen > 0)
cea2e8a9 1828 DIE(aTHX_ "Offset outside string");
bbce6d69 1829 } else
a0d0e21e
LW		 1830 offset = 0;
1831 if (length > blen - offset)
1832 length = blen - offset;
7d59b7e4 1833 if (DO_UTF8(bufsv)) {
c8d31a35 1834 buffer = (char*)utf8_hop((U8 *)buffer, offset);
7d59b7e4
NIS		 1835 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1836 }
1837 else {
1838 buffer = buffer+offset;
1839 }
a7092146 1840#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1841 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1842 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1843 buffer, length, 0);
a7092146
GS		 1844 }
1845 else
1846#endif
1847 {
94e4c244 1848 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1849 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1850 buffer, length);
a7092146 1851 }
a0d0e21e
LW		 1852 }
1853#ifdef HAS_SOCKET
1854 else if (SP > MARK) {
1855 char *sockbuf;
1856 STRLEN mlen;
1857 sockbuf = SvPVx(*++MARK, mlen);
7d59b7e4 1858 /* length is really flags */
8c99d73e
GS		 1859 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1860 length, (struct sockaddr *)sockbuf, mlen);
a0d0e21e
LW		 1861 }
1862 else
7d59b7e4 1863 /* length is really flags */
8c99d73e 1864 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
a0d0e21e
LW		 1865#else
1866 else
cea2e8a9 1867 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1868#endif
8c99d73e 1869 if (retval < 0)
a0d0e21e
LW		 1870 goto say_undef;
1871 SP = ORIGMARK;
f36eea10
JH		 1872 if (DO_UTF8(bufsv))
1873 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
8c99d73e
GS		 1874#if Size_t_size > IVSIZE
1875 PUSHn(retval);
1876#else
1877 PUSHi(retval);
1878#endif
a0d0e21e
LW		 1879 RETURN;
1880
1881 say_undef:
1882 SP = ORIGMARK;
1883 RETPUSHUNDEF;
1884}
1885
1886PP(pp_recv)
1887{
cea2e8a9 1888 return pp_sysread();
a0d0e21e
LW		 1889}
1890
1891PP(pp_eof)
1892{
39644a26 1893 dSP;
a0d0e21e 1894 GV *gv;
5b468f54 1895 IO *io;
4592e6ca 1896 MAGIC *mg;
a0d0e21e 1897
32da55ab 1898 if (MAXARG == 0) {
146174a9
CB		 1899 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1900 IO *io;
ed2c6b9b 1901 gv = PL_last_in_gv = GvEGV(PL_argvgv);
146174a9
CB		 1902 io = GvIO(gv);
1903 if (io && !IoIFP(io)) {
1904 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1905 IoLINES(io) = 0;
1906 IoFLAGS(io) &= ~IOf_START;
1907 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
1908 sv_setpvn(GvSV(gv), "-", 1);
1909 SvSETMAGIC(GvSV(gv));
1910 }
1911 else if (!nextargv(gv))
1912 RETPUSHYES;
1913 }
1914 }
1915 else
1916 gv = PL_last_in_gv; /* eof */
1917 }
a0d0e21e 1918 else
146174a9 1919 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 1920
5b468f54
AMS		 1921 if (gv && (io = GvIO(gv))
1922 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1923 {
4592e6ca 1924 PUSHMARK(SP);
5b468f54 1925 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1926 PUTBACK;
1927 ENTER;
864dbfa3 1928 call_method("EOF", G_SCALAR);
4592e6ca
NIS		 1929 LEAVE;
1930 SPAGAIN;
1931 RETURN;
1932 }
1933
54310121 1934 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 1935 RETURN;
1936}
1937
1938PP(pp_tell)
1939{
39644a26 1940 dSP; dTARGET;
301e8125 1941 GV *gv;
5b468f54 1942 IO *io;
4592e6ca 1943 MAGIC *mg;
a0d0e21e 1944
32da55ab 1945 if (MAXARG == 0)
3280af22 1946 gv = PL_last_in_gv;
a0d0e21e 1947 else
3280af22 1948 gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 1949
5b468f54
AMS		 1950 if (gv && (io = GvIO(gv))
1951 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1952 {
4592e6ca 1953 PUSHMARK(SP);
5b468f54 1954 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1955 PUTBACK;
1956 ENTER;
864dbfa3 1957 call_method("TELL", G_SCALAR);
4592e6ca
NIS		 1958 LEAVE;
1959 SPAGAIN;
1960 RETURN;
1961 }
1962
146174a9
CB		 1963#if LSEEKSIZE > IVSIZE
1964 PUSHn( do_tell(gv) );
1965#else
a0d0e21e 1966 PUSHi( do_tell(gv) );
146174a9 1967#endif
a0d0e21e
LW		 1968 RETURN;
1969}
1970
1971PP(pp_seek)
1972{
cea2e8a9 1973 return pp_sysseek();
137443ea 1974}
1975
1976PP(pp_sysseek)
1977{
39644a26 1978 dSP;
a0d0e21e 1979 GV *gv;
5b468f54 1980 IO *io;
a0d0e21e 1981 int whence = POPi;
146174a9
CB		 1982#if LSEEKSIZE > IVSIZE
1983 Off_t offset = (Off_t)SvNVx(POPs);
1984#else
d9b3e12d 1985 Off_t offset = (Off_t)SvIVx(POPs);
146174a9 1986#endif
4592e6ca 1987 MAGIC *mg;
a0d0e21e 1988
3280af22 1989 gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 1990
5b468f54
AMS		 1991 if (gv && (io = GvIO(gv))
1992 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1993 {
4592e6ca 1994 PUSHMARK(SP);
5b468f54 1995 XPUSHs(SvTIED_obj((SV*)io, mg));
cb50131a
CB		 1996#if LSEEKSIZE > IVSIZE
1997 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
1998#else
b448e4fe 1999 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 2000#endif
b448e4fe 2001 XPUSHs(sv_2mortal(newSViv(whence)));
4592e6ca
NIS		 2002 PUTBACK;
2003 ENTER;
864dbfa3 2004 call_method("SEEK", G_SCALAR);
4592e6ca
NIS		 2005 LEAVE;
2006 SPAGAIN;
2007 RETURN;
2008 }
2009
533c011a 2010 if (PL_op->op_type == OP_SEEK)
8903cb82 2011 PUSHs(boolSV(do_seek(gv, offset, whence)));
2012 else {
b448e4fe
JH		 2013 Off_t sought = do_sysseek(gv, offset, whence);
2014 if (sought < 0)
146174a9
CB		 2015 PUSHs(&PL_sv_undef);
2016 else {
b448e4fe 2017 SV* sv = sought ?
146174a9 2018#if LSEEKSIZE > IVSIZE
b448e4fe 2019 newSVnv((NV)sought)
146174a9 2020#else
b448e4fe 2021 newSViv(sought)
146174a9
CB		 2022#endif
2023 : newSVpvn(zero_but_true, ZBTLEN);
2024 PUSHs(sv_2mortal(sv));
2025 }
8903cb82 2026 }
a0d0e21e
LW		 2027 RETURN;
2028}
2029
2030PP(pp_truncate)
2031{
39644a26 2032 dSP;
8c99d73e
GS		 2033 /* There seems to be no consensus on the length type of truncate()
2034 * and ftruncate(), both off_t and size_t have supporters. In
2035 * general one would think that when using large files, off_t is
2036 * at least as wide as size_t, so using an off_t should be okay. */
2037 /* XXX Configure probe for the length type of *truncate() needed XXX */
2038 Off_t len;
a0d0e21e 2039
8c99d73e
GS		 2040#if Size_t_size > IVSIZE
2041 len = (Off_t)POPn;
2042#else
2043 len = (Off_t)POPi;
2044#endif
2045 /* Checking for length < 0 is problematic as the type might or
301e8125 2046 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2047 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2048 SETERRNO(0,0);
5d94fbed 2049#if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) || defined(F_FREESP)
d05c1ba0
JH		 2050 {
2051 STRLEN n_a;
2052 int result = 1;
2053 GV *tmpgv;
2054
2055 if (PL_op->op_flags & OPf_SPECIAL) {
2056 tmpgv = gv_fetchpv(POPpx, FALSE, SVt_PVIO);
2057
2058 do_ftruncate:
2059 TAINT_PROPER("truncate");
2060 if (!GvIO(tmpgv) || !IoIFP(GvIOp(tmpgv)))
2061 result = 0;
2062 else {
2063 PerlIO_flush(IoIFP(GvIOp(tmpgv)));
cbdc8872 2064#ifdef HAS_TRUNCATE
d05c1ba0 2065 if (ftruncate(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
301e8125 2066#else
d05c1ba0 2067 if (my_chsize(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
cbdc8872 2068#endif
d05c1ba0
JH		 2069 result = 0;
2070 }
cbdc8872 2071 }
d05c1ba0
JH		 2072 else {
2073 SV *sv = POPs;
2074 char *name;
72f496dc 2075
d05c1ba0
JH		 2076 if (SvTYPE(sv) == SVt_PVGV) {
2077 tmpgv = (GV*)sv; /* *main::FRED for example */
2078 goto do_ftruncate;
2079 }
2080 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2081 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2082 goto do_ftruncate;
2083 }
1e422769 2084
d05c1ba0
JH		 2085 name = SvPV(sv, n_a);
2086 TAINT_PROPER("truncate");
cbdc8872 2087#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2088 if (truncate(name, len) < 0)
2089 result = 0;
cbdc8872 2090#else
d05c1ba0
JH		 2091 {
2092 int tmpfd;
2093
2094 if ((tmpfd = PerlLIO_open(name, O_RDWR)) < 0)
cbdc8872 2095 result = 0;
d05c1ba0
JH		 2096 else {
2097 if (my_chsize(tmpfd, len) < 0)
2098 result = 0;
2099 PerlLIO_close(tmpfd);
2100 }
cbdc8872 2101 }
a0d0e21e 2102#endif
d05c1ba0 2103 }
a0d0e21e 2104
d05c1ba0
JH		 2105 if (result)
2106 RETPUSHYES;
2107 if (!errno)
91487cfc 2108 SETERRNO(EBADF,RMS$_IFI);
d05c1ba0
JH		 2109 RETPUSHUNDEF;
2110 }
a0d0e21e 2111#else
cea2e8a9 2112 DIE(aTHX_ "truncate not implemented");
a0d0e21e
LW		 2113#endif
2114}
2115
2116PP(pp_fcntl)
2117{
cea2e8a9 2118 return pp_ioctl();
a0d0e21e
LW		 2119}
2120
2121PP(pp_ioctl)
2122{
39644a26 2123 dSP; dTARGET;
748a9306 2124 SV *argsv = POPs;
3bb7c1b4 2125 unsigned int func = POPu;
533c011a 2126 int optype = PL_op->op_type;
a0d0e21e 2127 char *s;
324aa91a 2128 IV retval;
a0d0e21e 2129 GV *gv = (GV*)POPs;
c289d2f7 2130 IO *io = gv ? GvIOn(gv) : 0;
a0d0e21e 2131
748a9306 2132 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2133 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2134 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2135 SETERRNO(EBADF,RMS$_IFI); /* well, sort of... */
a0d0e21e
LW		 2136 RETPUSHUNDEF;
2137 }
2138
748a9306 2139 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2140 STRLEN len;
324aa91a 2141 STRLEN need;
748a9306 2142 s = SvPV_force(argsv, len);
324aa91a
HF		 2143 need = IOCPARM_LEN(func);
2144 if (len < need) {
2145 s = Sv_Grow(argsv, need + 1);
2146 SvCUR_set(argsv, need);
a0d0e21e
LW		 2147 }
2148
748a9306 2149 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2150 }
2151 else {
748a9306 2152 retval = SvIV(argsv);
c529f79d 2153 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2154 }
2155
2156 TAINT_PROPER(optype == OP_IOCTL ? "ioctl" : "fcntl");
2157
2158 if (optype == OP_IOCTL)
2159#ifdef HAS_IOCTL
76e3520e 2160 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2161#else
cea2e8a9 2162 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2163#endif
2164 else
55497cff 2165#ifdef HAS_FCNTL
2166#if defined(OS2) && defined(__EMX__)
760ac839 2167 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2168#else
760ac839 2169 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2170#endif
55497cff 2171#else
cea2e8a9 2172 DIE(aTHX_ "fcntl is not implemented");
a0d0e21e
LW		 2173#endif
2174
748a9306
LW		 2175 if (SvPOK(argsv)) {
2176 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2177 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2178 OP_NAME(PL_op));
748a9306
LW		 2179 s[SvCUR(argsv)] = 0; /* put our null back */
2180 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2181 }
2182
2183 if (retval == -1)
2184 RETPUSHUNDEF;
2185 if (retval != 0) {
2186 PUSHi(retval);
2187 }
2188 else {
8903cb82 2189 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e
LW		 2190 }
2191 RETURN;
2192}
2193
2194PP(pp_flock)
2195{
9cad6237 2196#ifdef FLOCK
39644a26 2197 dSP; dTARGET;
a0d0e21e
LW		 2198 I32 value;
2199 int argtype;
2200 GV *gv;
bc37a18f 2201 IO *io = NULL;
760ac839 2202 PerlIO *fp;
16d20bd9 2203
a0d0e21e 2204 argtype = POPi;
32da55ab 2205 if (MAXARG == 0)
3280af22 2206 gv = PL_last_in_gv;
a0d0e21e
LW		 2207 else
2208 gv = (GV*)POPs;
bc37a18f
RG		 2209 if (gv && (io = GvIO(gv)))
2210 fp = IoIFP(io);
2211 else {
a0d0e21e 2212 fp = Nullfp;
bc37a18f
RG		 2213 io = NULL;
2214 }
a0d0e21e 2215 if (fp) {
68dc0745 2216 (void)PerlIO_flush(fp);
76e3520e 2217 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2218 }
cb50131a 2219 else {
bc37a18f
RG		 2220 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2221 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2222 value = 0;
91487cfc 2223 SETERRNO(EBADF,RMS$_IFI);
cb50131a 2224 }
a0d0e21e
LW		 2225 PUSHi(value);
2226 RETURN;
2227#else
cea2e8a9 2228 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2229#endif
2230}
2231
2232/* Sockets. */
2233
2234PP(pp_socket)
2235{
a0d0e21e 2236#ifdef HAS_SOCKET
9cad6237 2237 dSP;
a0d0e21e
LW		 2238 GV *gv;
2239 register IO *io;
2240 int protocol = POPi;
2241 int type = POPi;
2242 int domain = POPi;
2243 int fd;
2244
2245 gv = (GV*)POPs;
c289d2f7 2246 io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2247
c289d2f7
JH		 2248 if (!gv || !io) {
2249 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2250 report_evil_fh(gv, io, PL_op->op_type);
2251 if (IoIFP(io))
2252 do_close(gv, FALSE);
91487cfc 2253 SETERRNO(EBADF,LIB$_INVARG);
a0d0e21e
LW		 2254 RETPUSHUNDEF;
2255 }
2256
57171420
BS		 2257 if (IoIFP(io))
2258 do_close(gv, FALSE);
2259
a0d0e21e 2260 TAINT_PROPER("socket");
6ad3d225 2261 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2262 if (fd < 0)
2263 RETPUSHUNDEF;
760ac839
LW		 2264 IoIFP(io) = PerlIO_fdopen(fd, "r"); /* stdio gets confused about sockets */
2265 IoOFP(io) = PerlIO_fdopen(fd, "w");
50952442 2266 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2267 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2268 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2269 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2270 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2271 RETPUSHUNDEF;
2272 }
8d2a6795
GS		 2273#if defined(HAS_FCNTL) && defined(F_SETFD)
2274 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2275#endif
a0d0e21e 2276
d5ff79b3
OF		 2277#ifdef EPOC
2278 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2279#endif
2280
a0d0e21e
LW		 2281 RETPUSHYES;
2282#else
cea2e8a9 2283 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2284#endif
2285}
2286
2287PP(pp_sockpair)
2288{
83ad58fb 2289#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
76ffd3b9 2290 dSP;
a0d0e21e
LW		 2291 GV *gv1;
2292 GV *gv2;
2293 register IO *io1;
2294 register IO *io2;
2295 int protocol = POPi;
2296 int type = POPi;
2297 int domain = POPi;
2298 int fd[2];
2299
2300 gv2 = (GV*)POPs;
2301 gv1 = (GV*)POPs;
c289d2f7
JH		 2302 io1 = gv1 ? GvIOn(gv1) : NULL;
2303 io2 = gv2 ? GvIOn(gv2) : NULL;
2304 if (!gv1 || !gv2 || !io1 || !io2) {
2305 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2306 if (!gv1 || !io1)
2307 report_evil_fh(gv1, io1, PL_op->op_type);
2308 if (!gv2 || !io2)
2309 report_evil_fh(gv1, io2, PL_op->op_type);
2310 }
2311 if (IoIFP(io1))
2312 do_close(gv1, FALSE);
2313 if (IoIFP(io2))
2314 do_close(gv2, FALSE);
a0d0e21e 2315 RETPUSHUNDEF;
c289d2f7 2316 }
a0d0e21e 2317
dc0d0a5f
JH		 2318 if (IoIFP(io1))
2319 do_close(gv1, FALSE);
2320 if (IoIFP(io2))
2321 do_close(gv2, FALSE);
57171420 2322
a0d0e21e 2323 TAINT_PROPER("socketpair");
6ad3d225 2324 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2325 RETPUSHUNDEF;
760ac839
LW		 2326 IoIFP(io1) = PerlIO_fdopen(fd[0], "r");
2327 IoOFP(io1) = PerlIO_fdopen(fd[0], "w");
50952442 2328 IoTYPE(io1) = IoTYPE_SOCKET;
760ac839
LW		 2329 IoIFP(io2) = PerlIO_fdopen(fd[1], "r");
2330 IoOFP(io2) = PerlIO_fdopen(fd[1], "w");
50952442 2331 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2332 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2333 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2334 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2335 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2336 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2337 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2338 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2339 RETPUSHUNDEF;
2340 }
8d2a6795
GS		 2341#if defined(HAS_FCNTL) && defined(F_SETFD)
2342 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2343 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2344#endif
a0d0e21e
LW		 2345
2346 RETPUSHYES;
2347#else
cea2e8a9 2348 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2349#endif
2350}
2351
2352PP(pp_bind)
2353{
a0d0e21e 2354#ifdef HAS_SOCKET
9cad6237 2355 dSP;
eec2d3df 2356#ifdef MPE /* Requires PRIV mode to bind() to ports < 1024 */
82b3da69
JH		 2357 extern void GETPRIVMODE();
2358 extern void GETUSERMODE();
eec2d3df 2359#endif
748a9306 2360 SV *addrsv = POPs;
a0d0e21e
LW		 2361 char *addr;
2362 GV *gv = (GV*)POPs;
2363 register IO *io = GvIOn(gv);
2364 STRLEN len;
eec2d3df
GS		 2365 int bind_ok = 0;
2366#ifdef MPE
2367 int mpeprivmode = 0;
2368#endif
a0d0e21e
LW		 2369
2370 if (!io || !IoIFP(io))
2371 goto nuts;
2372
748a9306 2373 addr = SvPV(addrsv, len);
a0d0e21e 2374 TAINT_PROPER("bind");
eec2d3df
GS		 2375#ifdef MPE /* Deal with MPE bind() peculiarities */
2376 if (((struct sockaddr *)addr)->sa_family == AF_INET) {
2377 /* The address *MUST* stupidly be zero. */
2378 ((struct sockaddr_in *)addr)->sin_addr.s_addr = INADDR_ANY;
2379 /* PRIV mode is required to bind() to ports < 1024. */
2380 if (((struct sockaddr_in *)addr)->sin_port < 1024 &&
2381 ((struct sockaddr_in *)addr)->sin_port > 0) {
2382 GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
2383 mpeprivmode = 1;
2384 }
2385 }
2386#endif /* MPE */
2387 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2388 (struct sockaddr *)addr, len) >= 0)
2389 bind_ok = 1;
2390
2391#ifdef MPE /* Switch back to USER mode */
2392 if (mpeprivmode)
2393 GETUSERMODE();
2394#endif /* MPE */
2395
2396 if (bind_ok)
a0d0e21e
LW		 2397 RETPUSHYES;
2398 else
2399 RETPUSHUNDEF;
2400
2401nuts:
599cee73 2402 if (ckWARN(WARN_CLOSED))
bc37a18f 2403 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2404 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2405 RETPUSHUNDEF;
2406#else
cea2e8a9 2407 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2408#endif
2409}
2410
2411PP(pp_connect)
2412{
a0d0e21e 2413#ifdef HAS_SOCKET
9cad6237 2414 dSP;
748a9306 2415 SV *addrsv = POPs;
a0d0e21e
LW		 2416 char *addr;
2417 GV *gv = (GV*)POPs;
2418 register IO *io = GvIOn(gv);
2419 STRLEN len;
2420
2421 if (!io || !IoIFP(io))
2422 goto nuts;
2423
748a9306 2424 addr = SvPV(addrsv, len);
a0d0e21e 2425 TAINT_PROPER("connect");
6ad3d225 2426 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2427 RETPUSHYES;
2428 else
2429 RETPUSHUNDEF;
2430
2431nuts:
599cee73 2432 if (ckWARN(WARN_CLOSED))
bc37a18f 2433 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2434 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2435 RETPUSHUNDEF;
2436#else
cea2e8a9 2437 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2438#endif
2439}
2440
2441PP(pp_listen)
2442{
a0d0e21e 2443#ifdef HAS_SOCKET
9cad6237 2444 dSP;
a0d0e21e
LW		 2445 int backlog = POPi;
2446 GV *gv = (GV*)POPs;
c289d2f7 2447 register IO *io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2448
c289d2f7 2449 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2450 goto nuts;
2451
6ad3d225 2452 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2453 RETPUSHYES;
2454 else
2455 RETPUSHUNDEF;
2456
2457nuts:
599cee73 2458 if (ckWARN(WARN_CLOSED))
bc37a18f 2459 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2460 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2461 RETPUSHUNDEF;
2462#else
cea2e8a9 2463 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2464#endif
2465}
2466
2467PP(pp_accept)
2468{
a0d0e21e 2469#ifdef HAS_SOCKET
9cad6237 2470 dSP; dTARGET;
a0d0e21e
LW		 2471 GV *ngv;
2472 GV *ggv;
2473 register IO *nstio;
2474 register IO *gstio;
4633a7c4 2475 struct sockaddr saddr; /* use a struct to avoid alignment problems */
1e422769 2476 Sock_size_t len = sizeof saddr;
a0d0e21e 2477 int fd;
72f496dc 2478 int fd2;
a0d0e21e
LW		 2479
2480 ggv = (GV*)POPs;
2481 ngv = (GV*)POPs;
2482
2483 if (!ngv)
2484 goto badexit;
2485 if (!ggv)
2486 goto nuts;
2487
2488 gstio = GvIO(ggv);
2489 if (!gstio || !IoIFP(gstio))
2490 goto nuts;
2491
2492 nstio = GvIOn(ngv);
6ad3d225 2493 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *)&saddr, &len);
a0d0e21e
LW		 2494 if (fd < 0)
2495 goto badexit;
a70048fb
AB		 2496 if (IoIFP(nstio))
2497 do_close(ngv, FALSE);
760ac839 2498 IoIFP(nstio) = PerlIO_fdopen(fd, "r");
72f496dc
NIS		 2499 /* FIXME: we dup(fd) here so that refcounting of fd's does not inhibit
2500 fclose of IoOFP's FILE * - and hence leak memory.
2501 Special treatment of _this_ case of IoIFP != IoOFP seems wrong.
2502 */
2503 IoOFP(nstio) = PerlIO_fdopen(fd2 = PerlLIO_dup(fd), "w");
50952442 2504 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2505 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2506 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2507 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2508 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2509 goto badexit;
2510 }
8d2a6795
GS		 2511#if defined(HAS_FCNTL) && defined(F_SETFD)
2512 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
72f496dc 2513 fcntl(fd2, F_SETFD, fd2 > PL_maxsysfd); /* ensure close-on-exec */
8d2a6795 2514#endif
a0d0e21e 2515
ed79a026 2516#ifdef EPOC
a9f1f6b0
OF		 2517 len = sizeof saddr; /* EPOC somehow truncates info */
2518 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026
OF		 2519#endif
2520
748a9306 2521 PUSHp((char *)&saddr, len);
a0d0e21e
LW		 2522 RETURN;
2523
2524nuts:
599cee73 2525 if (ckWARN(WARN_CLOSED))
bc37a18f 2526 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
91487cfc 2527 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2528
2529badexit:
2530 RETPUSHUNDEF;
2531
2532#else
cea2e8a9 2533 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2534#endif
2535}
2536
2537PP(pp_shutdown)
2538{
a0d0e21e 2539#ifdef HAS_SOCKET
9cad6237 2540 dSP; dTARGET;
a0d0e21e
LW		 2541 int how = POPi;
2542 GV *gv = (GV*)POPs;
2543 register IO *io = GvIOn(gv);
2544
2545 if (!io || !IoIFP(io))
2546 goto nuts;
2547
6ad3d225 2548 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2549 RETURN;
2550
2551nuts:
599cee73 2552 if (ckWARN(WARN_CLOSED))
bc37a18f 2553 report_evil_fh(gv, io, PL_op->op_type);
91487cfc 2554 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2555 RETPUSHUNDEF;
2556#else
cea2e8a9 2557 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2558#endif
2559}
2560
2561PP(pp_gsockopt)
2562{
2563#ifdef HAS_SOCKET
cea2e8a9 2564 return pp_ssockopt();
a0d0e21e 2565#else
cea2e8a9 2566 DIE(aTHX_ PL_no_sock_func, "getsockopt");
a0d0e21e
LW		 2567#endif
2568}
2569
2570PP(pp_ssockopt)
2571{
a0d0e21e 2572#ifdef HAS_SOCKET
9cad6237 2573 dSP;
533c011a 2574 int optype = PL_op->op_type;
a0d0e21e
LW		 2575 SV *sv;
2576 int fd;
2577 unsigned int optname;
2578 unsigned int lvl;
2579 GV *gv;
2580 register IO *io;
1e422769 2581 Sock_size_t len;
a0d0e21e
LW		 2582
2583 if (optype == OP_GSOCKOPT)
2584 sv = sv_2mortal(NEWSV(22, 257));
2585 else
2586 sv = POPs;
2587 optname = (unsigned int) POPi;
2588 lvl = (unsigned int) POPi;
2589
2590 gv = (GV*)POPs;
2591 io = GvIOn(gv);
2592 if (!io || !IoIFP(io))
2593 goto nuts;
2594
760ac839 2595 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2596 switch (optype) {
2597 case OP_GSOCKOPT:
748a9306 2598 SvGROW(sv, 257);
a0d0e21e 2599 (void)SvPOK_only(sv);
748a9306
LW		 2600 SvCUR_set(sv,256);
2601 *SvEND(sv) ='\0';
1e422769 2602 len = SvCUR(sv);
6ad3d225 2603 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2604 goto nuts2;
1e422769 2605 SvCUR_set(sv, len);
748a9306 2606 *SvEND(sv) ='\0';
a0d0e21e
LW		 2607 PUSHs(sv);
2608 break;
2609 case OP_SSOCKOPT: {
1e422769 2610 char *buf;
2611 int aint;
2612 if (SvPOKp(sv)) {
2d8e6c8d
GS		 2613 STRLEN l;
2614 buf = SvPV(sv, l);
2615 len = l;
1e422769 2616 }
56ee1660 2617 else {
a0d0e21e
LW		 2618 aint = (int)SvIV(sv);
2619 buf = (char*)&aint;
2620 len = sizeof(int);
2621 }
6ad3d225 2622 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2623 goto nuts2;
3280af22 2624 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2625 }
2626 break;
2627 }
2628 RETURN;
2629
2630nuts:
599cee73 2631 if (ckWARN(WARN_CLOSED))
bc37a18f 2632 report_evil_fh(gv, io, optype);
91487cfc 2633 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2634nuts2:
2635 RETPUSHUNDEF;
2636
2637#else
cea2e8a9 2638 DIE(aTHX_ PL_no_sock_func, "setsockopt");
a0d0e21e
LW		 2639#endif
2640}
2641
2642PP(pp_getsockname)
2643{
2644#ifdef HAS_SOCKET
cea2e8a9 2645 return pp_getpeername();
a0d0e21e 2646#else
cea2e8a9 2647 DIE(aTHX_ PL_no_sock_func, "getsockname");
a0d0e21e
LW		 2648#endif
2649}
2650
2651PP(pp_getpeername)
2652{
a0d0e21e 2653#ifdef HAS_SOCKET
9cad6237 2654 dSP;
533c011a 2655 int optype = PL_op->op_type;
a0d0e21e
LW		 2656 SV *sv;
2657 int fd;
2658 GV *gv = (GV*)POPs;
2659 register IO *io = GvIOn(gv);
1e422769 2660 Sock_size_t len;
a0d0e21e
LW		 2661
2662 if (!io || !IoIFP(io))
2663 goto nuts;
2664
2665 sv = sv_2mortal(NEWSV(22, 257));
748a9306 2666 (void)SvPOK_only(sv);
1e422769 2667 len = 256;
2668 SvCUR_set(sv, len);
748a9306 2669 *SvEND(sv) ='\0';
760ac839 2670 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2671 switch (optype) {
2672 case OP_GETSOCKNAME:
6ad3d225 2673 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2674 goto nuts2;
2675 break;
2676 case OP_GETPEERNAME:
6ad3d225 2677 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2678 goto nuts2;
490ab354
JH		 2679#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2680 {
2681 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";
2682 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2683 if (((struct sockaddr *)SvPVX(sv))->sa_family == AF_INET &&
2684 !memcmp((char *)SvPVX(sv) + sizeof(u_short), nowhere,
2685 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2686 goto nuts2;
490ab354
JH		 2687 }
2688 }
2689#endif
a0d0e21e
LW		 2690 break;
2691 }
13826f2c
CS		 2692#ifdef BOGUS_GETNAME_RETURN
2693 /* Interactive Unix, getpeername() and getsockname()
2694 does not return valid namelen */
1e422769 2695 if (len == BOGUS_GETNAME_RETURN)
2696 len = sizeof(struct sockaddr);
13826f2c 2697#endif
1e422769 2698 SvCUR_set(sv, len);
748a9306 2699 *SvEND(sv) ='\0';
a0d0e21e
LW		 2700 PUSHs(sv);
2701 RETURN;
2702
2703nuts:
599cee73 2704 if (ckWARN(WARN_CLOSED))
bc37a18f 2705 report_evil_fh(gv, io, optype);
91487cfc 2706 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2707nuts2:
2708 RETPUSHUNDEF;
2709
2710#else
cea2e8a9 2711 DIE(aTHX_ PL_no_sock_func, "getpeername");
a0d0e21e
LW		 2712#endif
2713}
2714
2715/* Stat calls. */
2716
2717PP(pp_lstat)
2718{
cea2e8a9 2719 return pp_stat();
a0d0e21e
LW		 2720}
2721
2722PP(pp_stat)
2723{
39644a26 2724 dSP;
2dd78f96 2725 GV *gv;
54310121 2726 I32 gimme;
a0d0e21e 2727 I32 max = 13;
2d8e6c8d 2728 STRLEN n_a;
a0d0e21e 2729
533c011a 2730 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2731 gv = cGVOP_gv;
8a4e5b40 2732 if (PL_op->op_type == OP_LSTAT) {
5d3e98de
RGS		 2733 if (gv != PL_defgv) {
2734 if (ckWARN(WARN_IO))
2735 Perl_warner(aTHX_ WARN_IO,
2736 "lstat() on filehandle %s", GvENAME(gv));
2737 } else if (PL_laststype != OP_LSTAT)
8a4e5b40 2738 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2739 }
2740
748a9306 2741 do_fstat:
2dd78f96 2742 if (gv != PL_defgv) {
3280af22 2743 PL_laststype = OP_STAT;
2dd78f96 2744 PL_statgv = gv;
3280af22 2745 sv_setpv(PL_statname, "");
2dd78f96
JH		 2746 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2747 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
a0d0e21e 2748 }
9ddeeac9 2749 if (PL_laststatval < 0) {
2dd78f96
JH		 2750 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2751 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2752 max = 0;
9ddeeac9 2753 }
a0d0e21e
LW		 2754 }
2755 else {
748a9306
LW		 2756 SV* sv = POPs;
2757 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2758 gv = (GV*)sv;
748a9306
LW		 2759 goto do_fstat;
2760 }
2761 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 2762 gv = (GV*)SvRV(sv);
5d3e98de
RGS		 2763 if (PL_op->op_type == OP_LSTAT && ckWARN(WARN_IO))
2764 Perl_warner(aTHX_ WARN_IO,
2765 "lstat() on filehandle %s", GvENAME(gv));
748a9306
LW		 2766 goto do_fstat;
2767 }
2d8e6c8d 2768 sv_setpv(PL_statname, SvPV(sv,n_a));
3280af22 2769 PL_statgv = Nullgv;
a0d0e21e 2770#ifdef HAS_LSTAT
533c011a
NIS		 2771 PL_laststype = PL_op->op_type;
2772 if (PL_op->op_type == OP_LSTAT)
2d8e6c8d 2773 PL_laststatval = PerlLIO_lstat(SvPV(PL_statname, n_a), &PL_statcache);
a0d0e21e
LW		 2774 else
2775#endif
2d8e6c8d 2776 PL_laststatval = PerlLIO_stat(SvPV(PL_statname, n_a), &PL_statcache);
3280af22 2777 if (PL_laststatval < 0) {
2d8e6c8d 2778 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(PL_statname, n_a), '\n'))
cea2e8a9 2779 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
a0d0e21e
LW		 2780 max = 0;
2781 }
2782 }
2783
54310121 2784 gimme = GIMME_V;
2785 if (gimme != G_ARRAY) {
2786 if (gimme != G_VOID)
2787 XPUSHs(boolSV(max));
2788 RETURN;
a0d0e21e
LW		 2789 }
2790 if (max) {
36477c24 2791 EXTEND(SP, max);
2792 EXTEND_MORTAL(max);
1ff81528
PL		 2793 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2794 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2795 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2796 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2797#if Uid_t_size > IVSIZE
2798 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2799#else
23dcd6c8 2800# if Uid_t_sign <= 0
1ff81528 2801 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2802# else
2803 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2804# endif
146174a9 2805#endif
301e8125 2806#if Gid_t_size > IVSIZE
146174a9
CB		 2807 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2808#else
23dcd6c8 2809# if Gid_t_sign <= 0
1ff81528 2810 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2811# else
2812 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2813# endif
146174a9 2814#endif
cbdc8872 2815#ifdef USE_STAT_RDEV
1ff81528 2816 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2817#else
79cb57f6 2818 PUSHs(sv_2mortal(newSVpvn("", 0)));
cbdc8872 2819#endif
146174a9
CB		 2820#if Off_t_size > IVSIZE
2821 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_size)));
2822#else
1ff81528 2823 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2824#endif
cbdc8872 2825#ifdef BIG_TIME
172ae379
JH		 2826 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2827 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2828 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2829#else
1ff81528
PL		 2830 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2831 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2832 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
cbdc8872 2833#endif
a0d0e21e 2834#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2835 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2836 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2837#else
79cb57f6
GS		 2838 PUSHs(sv_2mortal(newSVpvn("", 0)));
2839 PUSHs(sv_2mortal(newSVpvn("", 0)));
a0d0e21e
LW		 2840#endif
2841 }
2842 RETURN;
2843}
2844
2845PP(pp_ftrread)
2846{
9cad6237 2847 I32 result;
2a3ff820 2848 dSP;
5ff3f7a4 2849#if defined(HAS_ACCESS) && defined(R_OK)
2d8e6c8d 2850 STRLEN n_a;
5ff3f7a4 2851 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2852 result = access(TOPpx, R_OK);
5ff3f7a4
GS		 2853 if (result == 0)
2854 RETPUSHYES;
2855 if (result < 0)
2856 RETPUSHUNDEF;
2857 RETPUSHNO;
22865c03
GS		 2858 }
2859 else
cea2e8a9 2860 result = my_stat();
5ff3f7a4 2861#else
cea2e8a9 2862 result = my_stat();
5ff3f7a4 2863#endif
22865c03 2864 SPAGAIN;
a0d0e21e
LW		 2865 if (result < 0)
2866 RETPUSHUNDEF;
3280af22 2867 if (cando(S_IRUSR, 0, &PL_statcache))
a0d0e21e
LW		 2868 RETPUSHYES;
2869 RETPUSHNO;
2870}
2871
2872PP(pp_ftrwrite)
2873{
9cad6237 2874 I32 result;
2a3ff820 2875 dSP;
5ff3f7a4 2876#if defined(HAS_ACCESS) && defined(W_OK)
2d8e6c8d 2877 STRLEN n_a;
5ff3f7a4 2878 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2879 result = access(TOPpx, W_OK);
5ff3f7a4
GS		 2880 if (result == 0)
2881 RETPUSHYES;
2882 if (result < 0)
2883 RETPUSHUNDEF;
2884 RETPUSHNO;
22865c03
GS		 2885 }
2886 else
cea2e8a9 2887 result = my_stat();
5ff3f7a4 2888#else
cea2e8a9 2889 result = my_stat();
5ff3f7a4 2890#endif
22865c03 2891 SPAGAIN;
a0d0e21e
LW		 2892 if (result < 0)
2893 RETPUSHUNDEF;
3280af22 2894 if (cando(S_IWUSR, 0, &PL_statcache))
a0d0e21e
LW		 2895 RETPUSHYES;
2896 RETPUSHNO;
2897}
2898
2899PP(pp_ftrexec)
2900{
9cad6237 2901 I32 result;
2a3ff820 2902 dSP;
5ff3f7a4 2903#if defined(HAS_ACCESS) && defined(X_OK)
2d8e6c8d 2904 STRLEN n_a;
5ff3f7a4 2905 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2906 result = access(TOPpx, X_OK);
5ff3f7a4
GS		 2907 if (result == 0)
2908 RETPUSHYES;
2909 if (result < 0)
2910 RETPUSHUNDEF;
2911 RETPUSHNO;
22865c03
GS		 2912 }
2913 else
cea2e8a9 2914 result = my_stat();
5ff3f7a4 2915#else
cea2e8a9 2916 result = my_stat();
5ff3f7a4 2917#endif
22865c03 2918 SPAGAIN;
a0d0e21e
LW		 2919 if (result < 0)
2920 RETPUSHUNDEF;
3280af22 2921 if (cando(S_IXUSR, 0, &PL_statcache))
a0d0e21e
LW		 2922 RETPUSHYES;
2923 RETPUSHNO;
2924}
2925
2926PP(pp_fteread)
2927{
9cad6237 2928 I32 result;
2a3ff820 2929 dSP;
5ff3f7a4 2930#ifdef PERL_EFF_ACCESS_R_OK
2d8e6c8d 2931 STRLEN n_a;
5ff3f7a4 2932 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2933 result = PERL_EFF_ACCESS_R_OK(TOPpx);
5ff3f7a4
GS		 2934 if (result == 0)
2935 RETPUSHYES;
2936 if (result < 0)
2937 RETPUSHUNDEF;
2938 RETPUSHNO;
22865c03
GS		 2939 }
2940 else
cea2e8a9 2941 result = my_stat();
5ff3f7a4 2942#else
cea2e8a9 2943 result = my_stat();
5ff3f7a4 2944#endif
22865c03 2945 SPAGAIN;
a0d0e21e
LW		 2946 if (result < 0)
2947 RETPUSHUNDEF;
3280af22 2948 if (cando(S_IRUSR, 1, &PL_statcache))
a0d0e21e
LW		 2949 RETPUSHYES;
2950 RETPUSHNO;
2951}
2952
2953PP(pp_ftewrite)
2954{
9cad6237 2955 I32 result;
2a3ff820 2956 dSP;
5ff3f7a4 2957#ifdef PERL_EFF_ACCESS_W_OK
2d8e6c8d 2958 STRLEN n_a;
5ff3f7a4 2959 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2960 result = PERL_EFF_ACCESS_W_OK(TOPpx);
5ff3f7a4
GS		 2961 if (result == 0)
2962 RETPUSHYES;
2963 if (result < 0)
2964 RETPUSHUNDEF;
2965 RETPUSHNO;
22865c03
GS		 2966 }
2967 else
cea2e8a9 2968 result = my_stat();
5ff3f7a4 2969#else
cea2e8a9 2970 result = my_stat();
5ff3f7a4 2971#endif
22865c03 2972 SPAGAIN;
a0d0e21e
LW		 2973 if (result < 0)
2974 RETPUSHUNDEF;
3280af22 2975 if (cando(S_IWUSR, 1, &PL_statcache))
a0d0e21e
LW		 2976 RETPUSHYES;
2977 RETPUSHNO;
2978}
2979
2980PP(pp_fteexec)
2981{
9cad6237 2982 I32 result;
2a3ff820 2983 dSP;
5ff3f7a4 2984#ifdef PERL_EFF_ACCESS_X_OK
2d8e6c8d 2985 STRLEN n_a;
5ff3f7a4 2986 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2987 result = PERL_EFF_ACCESS_X_OK(TOPpx);
5ff3f7a4
GS		 2988 if (result == 0)
2989 RETPUSHYES;
2990 if (result < 0)
2991 RETPUSHUNDEF;
2992 RETPUSHNO;
22865c03
GS		 2993 }
2994 else
cea2e8a9 2995 result = my_stat();
5ff3f7a4 2996#else
cea2e8a9 2997 result = my_stat();
5ff3f7a4 2998#endif
22865c03 2999 SPAGAIN;
a0d0e21e
LW		 3000 if (result < 0)
3001 RETPUSHUNDEF;
3280af22 3002 if (cando(S_IXUSR, 1, &PL_statcache))
a0d0e21e
LW		 3003 RETPUSHYES;
3004 RETPUSHNO;
3005}
3006
3007PP(pp_ftis)
3008{
9cad6237 3009 I32 result = my_stat();
2a3ff820 3010 dSP;
a0d0e21e
LW		 3011 if (result < 0)
3012 RETPUSHUNDEF;
3013 RETPUSHYES;
3014}
3015
3016PP(pp_fteowned)
3017{
cea2e8a9 3018 return pp_ftrowned();
a0d0e21e
LW		 3019}
3020
3021PP(pp_ftrowned)
3022{
9cad6237 3023 I32 result = my_stat();
2a3ff820 3024 dSP;
a0d0e21e
LW		 3025 if (result < 0)
3026 RETPUSHUNDEF;
146174a9
CB		 3027 if (PL_statcache.st_uid == (PL_op->op_type == OP_FTEOWNED ?
3028 PL_euid : PL_uid) )
a0d0e21e
LW		 3029 RETPUSHYES;
3030 RETPUSHNO;
3031}
3032
3033PP(pp_ftzero)
3034{
9cad6237 3035 I32 result = my_stat();
2a3ff820 3036 dSP;
a0d0e21e
LW		 3037 if (result < 0)
3038 RETPUSHUNDEF;
146174a9 3039 if (PL_statcache.st_size == 0)
a0d0e21e
LW		 3040 RETPUSHYES;
3041 RETPUSHNO;
3042}
3043
3044PP(pp_ftsize)
3045{
9cad6237 3046 I32 result = my_stat();
2a3ff820 3047 dSP; dTARGET;
a0d0e21e
LW		 3048 if (result < 0)
3049 RETPUSHUNDEF;
146174a9
CB		 3050#if Off_t_size > IVSIZE
3051 PUSHn(PL_statcache.st_size);
3052#else
3280af22 3053 PUSHi(PL_statcache.st_size);
146174a9 3054#endif
a0d0e21e
LW		 3055 RETURN;
3056}
3057
3058PP(pp_ftmtime)
3059{
9cad6237 3060 I32 result = my_stat();
2a3ff820 3061 dSP; dTARGET;
a0d0e21e
LW		 3062 if (result < 0)
3063 RETPUSHUNDEF;
c6419e06 3064 PUSHn( (PL_basetime - PL_statcache.st_mtime) / 86400.0 );
a0d0e21e
LW		 3065 RETURN;
3066}
3067
3068PP(pp_ftatime)
3069{
9cad6237 3070 I32 result = my_stat();
2a3ff820 3071 dSP; dTARGET;
a0d0e21e
LW		 3072 if (result < 0)
3073 RETPUSHUNDEF;
c6419e06 3074 PUSHn( (PL_basetime - PL_statcache.st_atime) / 86400.0 );
a0d0e21e
LW		 3075 RETURN;
3076}
3077
3078PP(pp_ftctime)
3079{
9cad6237 3080 I32 result = my_stat();
2a3ff820 3081 dSP; dTARGET;
a0d0e21e
LW		 3082 if (result < 0)
3083 RETPUSHUNDEF;
c6419e06 3084 PUSHn( (PL_basetime - PL_statcache.st_ctime) / 86400.0 );
a0d0e21e
LW		 3085 RETURN;
3086}
3087
3088PP(pp_ftsock)
3089{
9cad6237 3090 I32 result = my_stat();
2a3ff820 3091 dSP;
a0d0e21e
LW		 3092 if (result < 0)
3093 RETPUSHUNDEF;
3280af22 3094 if (S_ISSOCK(PL_statcache.st_mode))
a0d0e21e
LW		 3095 RETPUSHYES;
3096 RETPUSHNO;
3097}
3098
3099PP(pp_ftchr)
3100{
9cad6237 3101 I32 result = my_stat();
2a3ff820 3102 dSP;
a0d0e21e
LW		 3103 if (result < 0)
3104 RETPUSHUNDEF;
3280af22 3105 if (S_ISCHR(PL_statcache.st_mode))
a0d0e21e
LW		 3106 RETPUSHYES;
3107 RETPUSHNO;
3108}
3109
3110PP(pp_ftblk)
3111{
9cad6237 3112 I32 result = my_stat();
2a3ff820 3113 dSP;
a0d0e21e
LW		 3114 if (result < 0)
3115 RETPUSHUNDEF;
3280af22 3116 if (S_ISBLK(PL_statcache.st_mode))
a0d0e21e
LW		 3117 RETPUSHYES;
3118 RETPUSHNO;
3119}
3120
3121PP(pp_ftfile)
3122{
9cad6237 3123 I32 result = my_stat();
2a3ff820 3124 dSP;
a0d0e21e
LW		 3125 if (result < 0)
3126 RETPUSHUNDEF;
3280af22 3127 if (S_ISREG(PL_statcache.st_mode))
a0d0e21e
LW		 3128 RETPUSHYES;
3129 RETPUSHNO;
3130}
3131
3132PP(pp_ftdir)
3133{
9cad6237 3134 I32 result = my_stat();
2a3ff820 3135 dSP;
a0d0e21e
LW		 3136 if (result < 0)
3137 RETPUSHUNDEF;
3280af22 3138 if (S_ISDIR(PL_statcache.st_mode))
a0d0e21e
LW		 3139 RETPUSHYES;
3140 RETPUSHNO;
3141}
3142
3143PP(pp_ftpipe)
3144{
9cad6237 3145 I32 result = my_stat();
2a3ff820 3146 dSP;
a0d0e21e
LW		 3147 if (result < 0)
3148 RETPUSHUNDEF;
3280af22 3149 if (S_ISFIFO(PL_statcache.st_mode))
a0d0e21e
LW		 3150 RETPUSHYES;
3151 RETPUSHNO;
3152}
3153
3154PP(pp_ftlink)
3155{
9cad6237 3156 I32 result = my_lstat();
2a3ff820 3157 dSP;
a0d0e21e
LW		 3158 if (result < 0)
3159 RETPUSHUNDEF;
3280af22 3160 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e
LW		 3161 RETPUSHYES;
3162 RETPUSHNO;
3163}
3164
3165PP(pp_ftsuid)
3166{
39644a26 3167 dSP;
a0d0e21e 3168#ifdef S_ISUID
cea2e8a9 3169 I32 result = my_stat();
a0d0e21e
LW		 3170 SPAGAIN;
3171 if (result < 0)
3172 RETPUSHUNDEF;
3280af22 3173 if (PL_statcache.st_mode & S_ISUID)
a0d0e21e
LW		 3174 RETPUSHYES;
3175#endif
3176 RETPUSHNO;
3177}
3178
3179PP(pp_ftsgid)
3180{
39644a26 3181 dSP;
a0d0e21e 3182#ifdef S_ISGID
cea2e8a9 3183 I32 result = my_stat();
a0d0e21e
LW		 3184 SPAGAIN;
3185 if (result < 0)
3186 RETPUSHUNDEF;
3280af22 3187 if (PL_statcache.st_mode & S_ISGID)
a0d0e21e
LW		 3188 RETPUSHYES;
3189#endif
3190 RETPUSHNO;
3191}
3192
3193PP(pp_ftsvtx)
3194{
39644a26 3195 dSP;
a0d0e21e 3196#ifdef S_ISVTX
cea2e8a9 3197 I32 result = my_stat();
a0d0e21e
LW		 3198 SPAGAIN;
3199 if (result < 0)
3200 RETPUSHUNDEF;
3280af22 3201 if (PL_statcache.st_mode & S_ISVTX)
a0d0e21e
LW		 3202 RETPUSHYES;
3203#endif
3204 RETPUSHNO;
3205}
3206
3207PP(pp_fttty)
3208{
39644a26 3209 dSP;
a0d0e21e
LW		 3210 int fd;
3211 GV *gv;
fb73857a 3212 char *tmps = Nullch;
2d8e6c8d 3213 STRLEN n_a;
fb73857a 3214
533c011a 3215 if (PL_op->op_flags & OPf_REF)
146174a9 3216 gv = cGVOP_gv;
fb73857a 3217 else if (isGV(TOPs))
3218 gv = (GV*)POPs;
3219 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3220 gv = (GV*)SvRV(POPs);
a0d0e21e 3221 else
2d8e6c8d 3222 gv = gv_fetchpv(tmps = POPpx, FALSE, SVt_PVIO);
fb73857a 3223
a0d0e21e 3224 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3225 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
fb73857a 3226 else if (tmps && isDIGIT(*tmps))
a0d0e21e
LW		 3227 fd = atoi(tmps);
3228 else
3229 RETPUSHUNDEF;
6ad3d225 3230 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3231 RETPUSHYES;
3232 RETPUSHNO;
3233}
3234
16d20bd9
AD		 3235#if defined(atarist) /* this will work with atariST. Configure will
3236 make guesses for other systems. */
3237# define FILE_base(f) ((f)->_base)
3238# define FILE_ptr(f) ((f)->_ptr)
3239# define FILE_cnt(f) ((f)->_cnt)
3240# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3241#endif
3242
3243PP(pp_fttext)
3244{
39644a26 3245 dSP;
a0d0e21e
LW		 3246 I32 i;
3247 I32 len;
3248 I32 odd = 0;
3249 STDCHAR tbuf[512];
3250 register STDCHAR *s;
3251 register IO *io;
5f05dabc 3252 register SV *sv;
3253 GV *gv;
2d8e6c8d 3254 STRLEN n_a;
146174a9 3255 PerlIO *fp;
a0d0e21e 3256
533c011a 3257 if (PL_op->op_flags & OPf_REF)
146174a9 3258 gv = cGVOP_gv;
5f05dabc 3259 else if (isGV(TOPs))
3260 gv = (GV*)POPs;
3261 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3262 gv = (GV*)SvRV(POPs);
3263 else
3264 gv = Nullgv;
3265
3266 if (gv) {
a0d0e21e 3267 EXTEND(SP, 1);
3280af22
NIS		 3268 if (gv == PL_defgv) {
3269 if (PL_statgv)
3270 io = GvIO(PL_statgv);
a0d0e21e 3271 else {
3280af22 3272 sv = PL_statname;
a0d0e21e
LW		 3273 goto really_filename;
3274 }
3275 }
3276 else {
3280af22
NIS		 3277 PL_statgv = gv;
3278 PL_laststatval = -1;
3279 sv_setpv(PL_statname, "");
3280 io = GvIO(PL_statgv);
a0d0e21e
LW		 3281 }
3282 if (io && IoIFP(io)) {
5f05dabc 3283 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3284 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3285 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3286 if (PL_laststatval < 0)
5f05dabc 3287 RETPUSHUNDEF;
9cbac4c7 3288 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3289 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3290 RETPUSHNO;
3291 else
3292 RETPUSHYES;
9cbac4c7 3293 }
a20bf0c3 3294 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3295 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3296 if (i != EOF)
760ac839 3297 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3298 }
a20bf0c3 3299 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3300 RETPUSHYES;
a20bf0c3
JH		 3301 len = PerlIO_get_bufsiz(IoIFP(io));
3302 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3303 /* sfio can have large buffers - limit to 512 */
3304 if (len > 512)
3305 len = 512;
a0d0e21e
LW		 3306 }
3307 else {
2dd78f96 3308 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3309 gv = cGVOP_gv;
2dd78f96 3310 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3311 }
91487cfc 3312 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 3313 RETPUSHUNDEF;
3314 }
3315 }
3316 else {
3317 sv = POPs;
5f05dabc 3318 really_filename:
3280af22
NIS		 3319 PL_statgv = Nullgv;
3320 PL_laststatval = -1;
5c9aa243 3321 PL_laststype = OP_STAT;
2d8e6c8d 3322 sv_setpv(PL_statname, SvPV(sv, n_a));
146174a9 3323 if (!(fp = PerlIO_open(SvPVX(PL_statname), "r"))) {
2d8e6c8d 3324 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
cea2e8a9 3325 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
a0d0e21e
LW		 3326 RETPUSHUNDEF;
3327 }
146174a9
CB		 3328 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3329 if (PL_laststatval < 0) {
3330 (void)PerlIO_close(fp);
5f05dabc 3331 RETPUSHUNDEF;
146174a9 3332 }
60382766 3333 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
146174a9
CB		 3334 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3335 (void)PerlIO_close(fp);
a0d0e21e 3336 if (len <= 0) {
533c011a 3337 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3338 RETPUSHNO; /* special case NFS directories */
3339 RETPUSHYES; /* null file is anything */
3340 }
3341 s = tbuf;
3342 }
3343
3344 /* now scan s to look for textiness */
4633a7c4 3345 /* XXX ASCII dependent code */
a0d0e21e 3346
146174a9
CB		 3347#if defined(DOSISH) || defined(USEMYBINMODE)
3348 /* ignore trailing ^Z on short files */
3349 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3350 --len;
3351#endif
3352
a0d0e21e
LW		 3353 for (i = 0; i < len; i++, s++) {
3354 if (!*s) { /* null never allowed in text */
3355 odd += len;
3356 break;
3357 }
9d116dd7 3358#ifdef EBCDIC
301e8125 3359 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3360 odd++;
3361#else
146174a9
CB		 3362 else if (*s & 128) {
3363#ifdef USE_LOCALE
2de3dbcc 3364 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3365 continue;
3366#endif
3367 /* utf8 characters don't count as odd */
fd400ab9 3368 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3369 int ulen = UTF8SKIP(s);
3370 if (ulen < len - i) {
3371 int j;
3372 for (j = 1; j < ulen; j++) {
fd400ab9 3373 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3374 goto not_utf8;
3375 }
3376 --ulen; /* loop does extra increment */
3377 s += ulen;
3378 i += ulen;
3379 continue;
3380 }
3381 }
3382 not_utf8:
3383 odd++;
146174a9 3384 }
a0d0e21e
LW		 3385 else if (*s < 32 &&
3386 *s != '\n' && *s != '\r' && *s != '\b' &&
3387 *s != '\t' && *s != '\f' && *s != 27)
3388 odd++;
9d116dd7 3389#endif
a0d0e21e
LW		 3390 }
3391
533c011a 3392 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3393 RETPUSHNO;
3394 else
3395 RETPUSHYES;
3396}
3397
3398PP(pp_ftbinary)
3399{
cea2e8a9 3400 return pp_fttext();
a0d0e21e
LW		 3401}
3402
3403/* File calls. */
3404
3405PP(pp_chdir)
3406{
39644a26 3407 dSP; dTARGET;
a0d0e21e
LW		 3408 char *tmps;
3409 SV **svp;
2d8e6c8d 3410 STRLEN n_a;
a0d0e21e 3411
35ae6b54
MS		 3412 if( MAXARG == 1 )
3413 tmps = POPpx;
3414 else
3415 tmps = 0;
3416
3417 if( !tmps || !*tmps ) {
3418 if ( (svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE))
3419 || (svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE))
491527d0 3420#ifdef VMS
35ae6b54 3421 || (svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE))
491527d0 3422#endif
35ae6b54
MS		 3423 )
3424 {
3425 if( MAXARG == 1 )
12bcd1a6 3426 deprecate_old("chdir('') or chdir(undef) as chdir()");
35ae6b54
MS		 3427 tmps = SvPV(*svp, n_a);
3428 }
72f496dc 3429 else {
389ec635 3430 PUSHi(0);
b7ab37f8 3431 TAINT_PROPER("chdir");
389ec635
MS		 3432 RETURN;
3433 }
8ea155d1 3434 }
8ea155d1 3435
a0d0e21e 3436 TAINT_PROPER("chdir");
6ad3d225 3437 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3438#ifdef VMS
3439 /* Clear the DEFAULT element of ENV so we'll get the new value
3440 * in the future. */
6b88bc9c 3441 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3442#endif
a0d0e21e
LW		 3443 RETURN;
3444}
3445
3446PP(pp_chown)
3447{
a0d0e21e 3448#ifdef HAS_CHOWN
76ffd3b9
IZ		 3449 dSP; dMARK; dTARGET;
3450 I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3451
a0d0e21e
LW		 3452 SP = MARK;
3453 PUSHi(value);
3454 RETURN;
3455#else
0322a713 3456 DIE(aTHX_ PL_no_func, "chown");
a0d0e21e
LW		 3457#endif
3458}
3459
3460PP(pp_chroot)
3461{
a0d0e21e 3462#ifdef HAS_CHROOT
76ffd3b9 3463 dSP; dTARGET;
2d8e6c8d 3464 STRLEN n_a;
d05c1ba0 3465 char *tmps = POPpx;
a0d0e21e
LW		 3466 TAINT_PROPER("chroot");
3467 PUSHi( chroot(tmps) >= 0 );
3468 RETURN;
3469#else
cea2e8a9 3470 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3471#endif
3472}
3473
3474PP(pp_unlink)
3475{
39644a26 3476 dSP; dMARK; dTARGET;
a0d0e21e 3477 I32 value;
533c011a 3478 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3479 SP = MARK;
3480 PUSHi(value);
3481 RETURN;
3482}
3483
3484PP(pp_chmod)
3485{
39644a26 3486 dSP; dMARK; dTARGET;
a0d0e21e 3487 I32 value;
533c011a 3488 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3489 SP = MARK;
3490 PUSHi(value);
3491 RETURN;
3492}
3493
3494PP(pp_utime)
3495{
39644a26 3496 dSP; dMARK; dTARGET;
a0d0e21e 3497 I32 value;
533c011a 3498 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3499 SP = MARK;
3500 PUSHi(value);
3501 RETURN;
3502}
3503
3504PP(pp_rename)
3505{
39644a26 3506 dSP; dTARGET;
a0d0e21e 3507 int anum;
2d8e6c8d 3508 STRLEN n_a;
a0d0e21e 3509
2d8e6c8d
GS		 3510 char *tmps2 = POPpx;
3511 char *tmps = SvPV(TOPs, n_a);
a0d0e21e
LW		 3512 TAINT_PROPER("rename");
3513#ifdef HAS_RENAME
baed7233 3514 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3515#else
6b88bc9c 3516 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
ed969818
W		 3517 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3518 anum = 1;
3519 else {
3654eb6c 3520 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
ed969818
W		 3521 (void)UNLINK(tmps2);
3522 if (!(anum = link(tmps, tmps2)))
3523 anum = UNLINK(tmps);
3524 }
a0d0e21e
LW		 3525 }
3526#endif
3527 SETi( anum >= 0 );
3528 RETURN;
3529}
3530
3531PP(pp_link)
3532{
a0d0e21e 3533#ifdef HAS_LINK
370f6000 3534 dSP; dTARGET;
2d8e6c8d
GS		 3535 STRLEN n_a;
3536 char *tmps2 = POPpx;
3537 char *tmps = SvPV(TOPs, n_a);
a0d0e21e 3538 TAINT_PROPER("link");
146174a9 3539 SETi( PerlLIO_link(tmps, tmps2) >= 0 );
65850d11 3540 RETURN;
a0d0e21e 3541#else
0322a713