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[perl5.git] / pp_sys.c
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a0d0e21e
LW		 1/* pp_sys.c
2 *
bc89e66f 3 * Copyright (c) 1991-2001, 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
a0d0e21e 52#ifdef HAS_SELECT
1e743fda
JH		 53# ifdef I_SYS_SELECT
54# include <sys/select.h>
55# endif
a0d0e21e 56#endif
a0d0e21e 57
dc45a647
MB		 58/* XXX Configure test needed.
59 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS		 60 applications, see "extern int errno in perl.h". Creating such
61 a test requires taking into account the differences between
62 compiling multithreaded and singlethreaded ($ccflags et al).
63 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 64*/
cb50131a 65#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW		 66extern int h_errno;
67#endif
68
69#ifdef HAS_PASSWD
70# ifdef I_PWD
71# include <pwd.h>
72# else
20ce7b12
GS		 73 struct passwd *getpwnam (char *);
74 struct passwd *getpwuid (Uid_t);
a0d0e21e 75# endif
28e8609d 76# ifdef HAS_GETPWENT
20ce7b12 77 struct passwd *getpwent (void);
28e8609d 78# endif
a0d0e21e
LW		 79#endif
80
81#ifdef HAS_GROUP
82# ifdef I_GRP
83# include <grp.h>
84# else
20ce7b12
GS		 85 struct group *getgrnam (char *);
86 struct group *getgrgid (Gid_t);
a0d0e21e 87# endif
28e8609d 88# ifdef HAS_GETGRENT
20ce7b12 89 struct group *getgrent (void);
28e8609d 90# endif
a0d0e21e
LW		 91#endif
92
93#ifdef I_UTIME
3730b96e 94# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 95# include <sys/utime.h>
96# else
97# include <utime.h>
98# endif
a0d0e21e 99#endif
a0d0e21e 100
d3b9c689
RG		 101#ifdef I_SYS_UN
102# ifdef __linux__
103# include <sys/un.h>
104# endif
105#endif
106
54310121 107/* Put this after #includes because fork and vfork prototypes may conflict. */
108#ifndef HAS_VFORK
109# define vfork fork
110#endif
111
cbdc8872 112#ifdef HAS_CHSIZE
cd52b7b2 113# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
114# undef my_chsize
115# endif
6ad3d225 116# define my_chsize PerlLIO_chsize
cbdc8872 117#endif
118
ff68c719 119#ifdef HAS_FLOCK
120# define FLOCK flock
121#else /* no flock() */
122
36477c24 123 /* fcntl.h might not have been included, even if it exists, because
124 the current Configure only sets I_FCNTL if it's needed to pick up
125 the *_OK constants. Make sure it has been included before testing
126 the fcntl() locking constants. */
127# if defined(HAS_FCNTL) && !defined(I_FCNTL)
128# include <fcntl.h>
129# endif
130
9d9004a9 131# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 132# define FLOCK fcntl_emulate_flock
133# define FCNTL_EMULATE_FLOCK
134# else /* no flock() or fcntl(F_SETLK,...) */
135# ifdef HAS_LOCKF
136# define FLOCK lockf_emulate_flock
137# define LOCKF_EMULATE_FLOCK
138# endif /* lockf */
139# endif /* no flock() or fcntl(F_SETLK,...) */
140
141# ifdef FLOCK
20ce7b12 142 static int FLOCK (int, int);
ff68c719 143
144 /*
145 * These are the flock() constants. Since this sytems doesn't have
146 * flock(), the values of the constants are probably not available.
147 */
148# ifndef LOCK_SH
149# define LOCK_SH 1
150# endif
151# ifndef LOCK_EX
152# define LOCK_EX 2
153# endif
154# ifndef LOCK_NB
155# define LOCK_NB 4
156# endif
157# ifndef LOCK_UN
158# define LOCK_UN 8
159# endif
160# endif /* emulating flock() */
161
162#endif /* no flock() */
55497cff 163
85ab1d1d
JH		 164#define ZBTLEN 10
165static char zero_but_true[ZBTLEN + 1] = "0 but true";
166
5ff3f7a4
GS		 167#if defined(I_SYS_ACCESS) && !defined(R_OK)
168# include <sys/access.h>
169#endif
170
c529f79d
CB		 171#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
172# define FD_CLOEXEC 1 /* NeXT needs this */
173#endif
174
5ff3f7a4
GS		 175#undef PERL_EFF_ACCESS_R_OK /* EFFective uid/gid ACCESS R_OK */
176#undef PERL_EFF_ACCESS_W_OK
177#undef PERL_EFF_ACCESS_X_OK
178
179/* F_OK unused: if stat() cannot find it... */
180
181#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 182 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
5ff3f7a4
GS		 183# define PERL_EFF_ACCESS_R_OK(p) (access((p), R_OK | EFF_ONLY_OK))
184# define PERL_EFF_ACCESS_W_OK(p) (access((p), W_OK | EFF_ONLY_OK))
185# define PERL_EFF_ACCESS_X_OK(p) (access((p), X_OK | EFF_ONLY_OK))
186#endif
187
188#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_EACCESS)
3813c136 189# ifdef I_SYS_SECURITY
5ff3f7a4
GS		 190# include <sys/security.h>
191# endif
c955f117
JH		 192# ifdef ACC_SELF
193 /* HP SecureWare */
194# define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK, ACC_SELF))
195# define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK, ACC_SELF))
196# define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK, ACC_SELF))
197# else
198 /* SCO */
199# define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK))
200# define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK))
201# define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK))
202# endif
5ff3f7a4
GS		 203#endif
204
205#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 206 /* AIX */
5ff3f7a4
GS		 207# define PERL_EFF_ACCESS_R_OK(p) (accessx((p), R_OK, ACC_SELF))
208# define PERL_EFF_ACCESS_W_OK(p) (accessx((p), W_OK, ACC_SELF))
209# define PERL_EFF_ACCESS_X_OK(p) (accessx((p), X_OK, ACC_SELF))
210#endif
211
327c3667
GS		 212#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) \
213 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
214 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 215/* The Hard Way. */
327c3667 216STATIC int
7f4774ae 217S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 218{
5ff3f7a4
GS		 219 Uid_t ruid = getuid();
220 Uid_t euid = geteuid();
221 Gid_t rgid = getgid();
222 Gid_t egid = getegid();
223 int res;
224
146174a9 225 LOCK_CRED_MUTEX;
5ff3f7a4 226#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 227 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 228#else
229#ifdef HAS_SETREUID
230 if (setreuid(euid, ruid))
231#else
232#ifdef HAS_SETRESUID
233 if (setresuid(euid, ruid, (Uid_t)-1))
234#endif
235#endif
cea2e8a9 236 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 237#endif
238
239#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 240 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS		 241#else
242#ifdef HAS_SETREGID
243 if (setregid(egid, rgid))
244#else
245#ifdef HAS_SETRESGID
246 if (setresgid(egid, rgid, (Gid_t)-1))
247#endif
248#endif
cea2e8a9 249 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 250#endif
251
252 res = access(path, mode);
253
254#ifdef HAS_SETREUID
255 if (setreuid(ruid, euid))
256#else
257#ifdef HAS_SETRESUID
258 if (setresuid(ruid, euid, (Uid_t)-1))
259#endif
260#endif
cea2e8a9 261 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 262
263#ifdef HAS_SETREGID
264 if (setregid(rgid, egid))
265#else
266#ifdef HAS_SETRESGID
267 if (setresgid(rgid, egid, (Gid_t)-1))
268#endif
269#endif
cea2e8a9 270 Perl_croak(aTHX_ "leaving effective gid failed");
146174a9 271 UNLOCK_CRED_MUTEX;
5ff3f7a4
GS		 272
273 return res;
274}
275# define PERL_EFF_ACCESS_R_OK(p) (emulate_eaccess((p), R_OK))
276# define PERL_EFF_ACCESS_W_OK(p) (emulate_eaccess((p), W_OK))
277# define PERL_EFF_ACCESS_X_OK(p) (emulate_eaccess((p), X_OK))
278#endif
279
280#if !defined(PERL_EFF_ACCESS_R_OK)
327c3667 281STATIC int
7f4774ae 282S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 283{
cea2e8a9 284 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 285 /*NOTREACHED*/
286 return -1;
287}
288#endif
289
a0d0e21e
LW		 290PP(pp_backtick)
291{
39644a26 292 dSP; dTARGET;
760ac839 293 PerlIO *fp;
2d8e6c8d
GS		 294 STRLEN n_a;
295 char *tmps = POPpx;
54310121 296 I32 gimme = GIMME_V;
16fe6d59 297 char *mode = "r";
54310121 298
a0d0e21e 299 TAINT_PROPER("``");
16fe6d59
GS		 300 if (PL_op->op_private & OPpOPEN_IN_RAW)
301 mode = "rb";
302 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
303 mode = "rt";
304 fp = PerlProc_popen(tmps, mode);
a0d0e21e 305 if (fp) {
ac27b0f5
NIS		 306 char *type = NULL;
307 if (PL_curcop->cop_io) {
308 type = SvPV_nolen(PL_curcop->cop_io);
309 }
ac27b0f5
NIS		 310 if (type && *type)
311 PerlIO_apply_layers(aTHX_ fp,mode,type);
312
54310121 313 if (gimme == G_VOID) {
96827780
MB		 314 char tmpbuf[256];
315 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
54310121 316 /*SUPPRESS 530*/
317 ;
318 }
319 else if (gimme == G_SCALAR) {
aa689395 320 sv_setpv(TARG, ""); /* note that this preserves previous buffer */
a0d0e21e
LW		 321 while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
322 /*SUPPRESS 530*/
323 ;
324 XPUSHs(TARG);
aa689395 325 SvTAINTED_on(TARG);
a0d0e21e
LW		 326 }
327 else {
328 SV *sv;
329
330 for (;;) {
8d6dde3e 331 sv = NEWSV(56, 79);
a0d0e21e
LW		 332 if (sv_gets(sv, fp, 0) == Nullch) {
333 SvREFCNT_dec(sv);
334 break;
335 }
336 XPUSHs(sv_2mortal(sv));
337 if (SvLEN(sv) - SvCUR(sv) > 20) {
338 SvLEN_set(sv, SvCUR(sv)+1);
339 Renew(SvPVX(sv), SvLEN(sv), char);
340 }
aa689395 341 SvTAINTED_on(sv);
a0d0e21e
LW		 342 }
343 }
6ad3d225 344 STATUS_NATIVE_SET(PerlProc_pclose(fp));
aa689395 345 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 346 }
347 else {
f86702cc 348 STATUS_NATIVE_SET(-1);
54310121 349 if (gimme == G_SCALAR)
a0d0e21e
LW		 350 RETPUSHUNDEF;
351 }
352
353 RETURN;
354}
355
356PP(pp_glob)
357{
358 OP *result;
f5284f61
IZ		 359 tryAMAGICunTARGET(iter, -1);
360
71686f12
GS		 361 /* Note that we only ever get here if File::Glob fails to load
362 * without at the same time croaking, for some reason, or if
363 * perl was built with PERL_EXTERNAL_GLOB */
364
a0d0e21e 365 ENTER;
a0d0e21e 366
c90c0ff4 367#ifndef VMS
3280af22 368 if (PL_tainting) {
7bac28a0 369 /*
370 * The external globbing program may use things we can't control,
371 * so for security reasons we must assume the worst.
372 */
373 TAINT;
22c35a8c 374 taint_proper(PL_no_security, "glob");
7bac28a0 375 }
c90c0ff4 376#endif /* !VMS */
7bac28a0 377
3280af22
NIS		 378 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
379 PL_last_in_gv = (GV*)*PL_stack_sp--;
a0d0e21e 380
3280af22 381 SAVESPTR(PL_rs); /* This is not permanent, either. */
79cb57f6 382 PL_rs = sv_2mortal(newSVpvn("\000", 1));
c07a80fd 383#ifndef DOSISH
384#ifndef CSH
6b88bc9c 385 *SvPVX(PL_rs) = '\n';
a0d0e21e 386#endif /* !CSH */
55497cff 387#endif /* !DOSISH */
c07a80fd 388
a0d0e21e
LW		 389 result = do_readline();
390 LEAVE;
391 return result;
392}
393
15e52e56 394#if 0 /* XXX never used! */
a0d0e21e
LW		 395PP(pp_indread)
396{
2d8e6c8d
GS		 397 STRLEN n_a;
398 PL_last_in_gv = gv_fetchpv(SvPVx(GvSV((GV*)(*PL_stack_sp--)), n_a), TRUE,SVt_PVIO);
a0d0e21e
LW		 399 return do_readline();
400}
15e52e56 401#endif
a0d0e21e
LW		 402
403PP(pp_rcatline)
404{
146174a9 405 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 406 return do_readline();
407}
408
409PP(pp_warn)
410{
39644a26 411 dSP; dMARK;
06bf62c7 412 SV *tmpsv;
a0d0e21e 413 char *tmps;
06bf62c7 414 STRLEN len;
a0d0e21e
LW		 415 if (SP - MARK != 1) {
416 dTARGET;
3280af22 417 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 418 tmpsv = TARG;
a0d0e21e
LW		 419 SP = MARK + 1;
420 }
421 else {
06bf62c7 422 tmpsv = TOPs;
a0d0e21e 423 }
06bf62c7
GS		 424 tmps = SvPV(tmpsv, len);
425 if (!tmps || !len) {
4e6ea2c3
GS		 426 SV *error = ERRSV;
427 (void)SvUPGRADE(error, SVt_PV);
428 if (SvPOK(error) && SvCUR(error))
429 sv_catpv(error, "\t...caught");
06bf62c7
GS		 430 tmpsv = error;
431 tmps = SvPV(tmpsv, len);
a0d0e21e 432 }
06bf62c7
GS		 433 if (!tmps || !len)
434 tmpsv = sv_2mortal(newSVpvn("Warning: something's wrong", 26));
435
cb50131a 436 Perl_warn(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 437 RETSETYES;
438}
439
440PP(pp_die)
441{
39644a26 442 dSP; dMARK;
a0d0e21e 443 char *tmps;
06bf62c7
GS		 444 SV *tmpsv;
445 STRLEN len;
446 bool multiarg = 0;
a0d0e21e
LW		 447 if (SP - MARK != 1) {
448 dTARGET;
3280af22 449 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7
GS		 450 tmpsv = TARG;
451 tmps = SvPV(tmpsv, len);
452 multiarg = 1;
a0d0e21e
LW		 453 SP = MARK + 1;
454 }
455 else {
4e6ea2c3 456 tmpsv = TOPs;
bf484eac 457 tmps = (SvROK(tmpsv) && PL_in_eval) ? Nullch : SvPV(tmpsv, len);
a0d0e21e 458 }
06bf62c7 459 if (!tmps || !len) {
4e6ea2c3
GS		 460 SV *error = ERRSV;
461 (void)SvUPGRADE(error, SVt_PV);
06bf62c7
GS		 462 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
463 if (!multiarg)
4e6ea2c3 464 SvSetSV(error,tmpsv);
06bf62c7 465 else if (sv_isobject(error)) {
05423cc9
GS		 466 HV *stash = SvSTASH(SvRV(error));
467 GV *gv = gv_fetchmethod(stash, "PROPAGATE");
468 if (gv) {
146174a9 469 SV *file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
b448e4fe 470 SV *line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
05423cc9
GS		 471 EXTEND(SP, 3);
472 PUSHMARK(SP);
473 PUSHs(error);
474 PUSHs(file);
475 PUSHs(line);
476 PUTBACK;
864dbfa3
GS		 477 call_sv((SV*)GvCV(gv),
478 G_SCALAR|G_EVAL|G_KEEPERR);
3280af22 479 sv_setsv(error,*PL_stack_sp--);
05423cc9
GS		 480 }
481 }
cea2e8a9 482 DIE(aTHX_ Nullch);
4e6ea2c3
GS		 483 }
484 else {
485 if (SvPOK(error) && SvCUR(error))
486 sv_catpv(error, "\t...propagated");
06bf62c7
GS		 487 tmpsv = error;
488 tmps = SvPV(tmpsv, len);
4e6ea2c3 489 }
a0d0e21e 490 }
06bf62c7
GS		 491 if (!tmps || !len)
492 tmpsv = sv_2mortal(newSVpvn("Died", 4));
493
cb50131a 494 DIE(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 495}
496
497/* I/O. */
498
499PP(pp_open)
500{
39644a26 501 dSP;
a567e93b
NIS		 502 dMARK; dORIGMARK;
503 dTARGET;
a0d0e21e
LW		 504 GV *gv;
505 SV *sv;
506 char *tmps;
507 STRLEN len;
4592e6ca 508 MAGIC *mg;
a567e93b 509 bool ok;
a0d0e21e 510
a567e93b 511 gv = (GV *)*++MARK;
5f05dabc 512 if (!isGV(gv))
cea2e8a9 513 DIE(aTHX_ PL_no_usym, "filehandle");
36477c24 514 if (GvIOp(gv))
515 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 516
155aba94 517 if ((mg = SvTIED_mg((SV*)gv, 'q'))) {
a567e93b
NIS		 518 /* Method's args are same as ours ... */
519 /* ... except handle is replaced by the object */
520 *MARK-- = SvTIED_obj((SV*)gv, mg);
521 PUSHMARK(MARK);
4592e6ca
NIS		 522 PUTBACK;
523 ENTER;
864dbfa3 524 call_method("OPEN", G_SCALAR);
4592e6ca
NIS		 525 LEAVE;
526 SPAGAIN;
527 RETURN;
528 }
529
a567e93b
NIS		 530 if (MARK < SP) {
531 sv = *++MARK;
532 }
533 else {
534 sv = GvSV(gv);
535 }
536
a0d0e21e 537 tmps = SvPV(sv, len);
a567e93b
NIS		 538 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp, MARK+1, (SP-MARK));
539 SP = ORIGMARK;
540 if (ok)
3280af22
NIS		 541 PUSHi( (I32)PL_forkprocess );
542 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 543 PUSHi(0);
544 else
545 RETPUSHUNDEF;
546 RETURN;
547}
548
549PP(pp_close)
550{
39644a26 551 dSP;
a0d0e21e 552 GV *gv;
1d603a67 553 MAGIC *mg;
a0d0e21e
LW		 554
555 if (MAXARG == 0)
3280af22 556 gv = PL_defoutgv;
a0d0e21e
LW		 557 else
558 gv = (GV*)POPs;
1d603a67 559
155aba94 560 if ((mg = SvTIED_mg((SV*)gv, 'q'))) {
1d603a67 561 PUSHMARK(SP);
33c27489 562 XPUSHs(SvTIED_obj((SV*)gv, mg));
1d603a67
GB		 563 PUTBACK;
564 ENTER;
864dbfa3 565 call_method("CLOSE", G_SCALAR);
1d603a67
GB		 566 LEAVE;
567 SPAGAIN;
568 RETURN;
569 }
a0d0e21e 570 EXTEND(SP, 1);
54310121 571 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 572 RETURN;
573}
574
575PP(pp_pipe_op)
576{
39644a26 577 dSP;
a0d0e21e
LW		 578#ifdef HAS_PIPE
579 GV *rgv;
580 GV *wgv;
581 register IO *rstio;
582 register IO *wstio;
583 int fd[2];
584
585 wgv = (GV*)POPs;
586 rgv = (GV*)POPs;
587
588 if (!rgv || !wgv)
589 goto badexit;
590
4633a7c4 591 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
cea2e8a9 592 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 593 rstio = GvIOn(rgv);
594 wstio = GvIOn(wgv);
595
596 if (IoIFP(rstio))
597 do_close(rgv, FALSE);
598 if (IoIFP(wstio))
599 do_close(wgv, FALSE);
600
6ad3d225 601 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 602 goto badexit;
603
760ac839
LW		 604 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
605 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
a0d0e21e 606 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 607 IoTYPE(rstio) = IoTYPE_RDONLY;
608 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 609
610 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 611 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
6ad3d225 612 else PerlLIO_close(fd[0]);
760ac839 613 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
6ad3d225 614 else PerlLIO_close(fd[1]);
a0d0e21e
LW		 615 goto badexit;
616 }
4771b018
GS		 617#if defined(HAS_FCNTL) && defined(F_SETFD)
618 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
619 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
620#endif
a0d0e21e
LW		 621 RETPUSHYES;
622
623badexit:
624 RETPUSHUNDEF;
625#else
cea2e8a9 626 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 627#endif
628}
629
630PP(pp_fileno)
631{
39644a26 632 dSP; dTARGET;
a0d0e21e
LW		 633 GV *gv;
634 IO *io;
760ac839 635 PerlIO *fp;
4592e6ca
NIS		 636 MAGIC *mg;
637
a0d0e21e
LW		 638 if (MAXARG < 1)
639 RETPUSHUNDEF;
640 gv = (GV*)POPs;
4592e6ca
NIS		 641
642 if (gv && (mg = SvTIED_mg((SV*)gv, 'q'))) {
643 PUSHMARK(SP);
644 XPUSHs(SvTIED_obj((SV*)gv, mg));
645 PUTBACK;
646 ENTER;
864dbfa3 647 call_method("FILENO", G_SCALAR);
4592e6ca
NIS		 648 LEAVE;
649 SPAGAIN;
650 RETURN;
651 }
652
c289d2f7
JH		 653 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
654 /* Can't do this because people seem to do things like
655 defined(fileno($foo)) to check whether $foo is a valid fh.
656 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
657 report_evil_fh(gv, io, PL_op->op_type);
658 */
a0d0e21e 659 RETPUSHUNDEF;
c289d2f7
JH		 660 }
661
760ac839 662 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 663 RETURN;
664}
665
666PP(pp_umask)
667{
39644a26 668 dSP; dTARGET;
761237fe 669 Mode_t anum;
a0d0e21e
LW		 670
671#ifdef HAS_UMASK
672 if (MAXARG < 1) {
6ad3d225
GS		 673 anum = PerlLIO_umask(0);
674 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 675 }
676 else
6ad3d225 677 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 678 TAINT_PROPER("umask");
679 XPUSHi(anum);
680#else
eec2d3df
GS		 681 /* Only DIE if trying to restrict permissions on `user' (self).
682 * Otherwise it's harmless and more useful to just return undef
683 * since 'group' and 'other' concepts probably don't exist here. */
684 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 685 DIE(aTHX_ "umask not implemented");
6b88bc9c 686 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 687#endif
688 RETURN;
689}
690
691PP(pp_binmode)
692{
39644a26 693 dSP;
a0d0e21e
LW		 694 GV *gv;
695 IO *io;
760ac839 696 PerlIO *fp;
4592e6ca 697 MAGIC *mg;
16fe6d59 698 SV *discp = Nullsv;
60382766
NIS		 699 STRLEN len = 0;
700 char *names = NULL;
a0d0e21e
LW		 701
702 if (MAXARG < 1)
703 RETPUSHUNDEF;
60382766 704 if (MAXARG > 1) {
16fe6d59 705 discp = POPs;
60382766 706 }
a0d0e21e 707
301e8125 708 gv = (GV*)POPs;
4592e6ca
NIS		 709
710 if (gv && (mg = SvTIED_mg((SV*)gv, 'q'))) {
711 PUSHMARK(SP);
712 XPUSHs(SvTIED_obj((SV*)gv, mg));
16fe6d59
GS		 713 if (discp)
714 XPUSHs(discp);
4592e6ca
NIS		 715 PUTBACK;
716 ENTER;
864dbfa3 717 call_method("BINMODE", G_SCALAR);
4592e6ca
NIS		 718 LEAVE;
719 SPAGAIN;
720 RETURN;
721 }
a0d0e21e
LW		 722
723 EXTEND(SP, 1);
50f846a7 724 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7
JH		 725 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
726 report_evil_fh(gv, io, PL_op->op_type);
50f846a7
SC		 727 RETPUSHUNDEF;
728 }
a0d0e21e 729
60382766
NIS		 730 if (discp) {
731 names = SvPV(discp,len);
732 }
733
734 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
735 (discp) ? SvPV_nolen(discp) : Nullch))
a0d0e21e
LW		 736 RETPUSHYES;
737 else
738 RETPUSHUNDEF;
a0d0e21e
LW		 739}
740
741PP(pp_tie)
742{
39644a26 743 dSP;
e336de0d 744 dMARK;
a0d0e21e
LW		 745 SV *varsv;
746 HV* stash;
747 GV *gv;
a0d0e21e 748 SV *sv;
3280af22 749 I32 markoff = MARK - PL_stack_base;
a0d0e21e 750 char *methname;
6b05c17a 751 int how = 'P';
e336de0d 752 U32 items;
2d8e6c8d 753 STRLEN n_a;
a0d0e21e 754
e336de0d 755 varsv = *++MARK;
6b05c17a
NIS		 756 switch(SvTYPE(varsv)) {
757 case SVt_PVHV:
758 methname = "TIEHASH";
759 break;
760 case SVt_PVAV:
761 methname = "TIEARRAY";
762 break;
763 case SVt_PVGV:
5bd07a3d
DM		 764#ifdef GV_SHARED_CHECK
765 if (GvSHARED((GV*)varsv)) {
766 Perl_croak(aTHX_ "Attempt to tie shared GV");
767 }
768#endif
6b05c17a
NIS		 769 methname = "TIEHANDLE";
770 how = 'q';
771 break;
772 default:
773 methname = "TIESCALAR";
774 how = 'q';
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;
33c27489
GS		 829 SV *sv = POPs;
830 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) ? 'P' : 'q';
55497cff 831
cbdc8872 832 MAGIC * mg ;
155aba94 833 if ((mg = SvTIED_mg(sv, how))) {
a29a5827
NIS		 834 SV *obj = SvRV(mg->mg_obj);
835 GV *gv;
836 CV *cv = NULL;
a29a5827
NIS		 837 if ((gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE)) &&
838 isGV(gv) && (cv = GvCV(gv))) {
839 PUSHMARK(SP);
840 XPUSHs(SvTIED_obj((SV*)gv, mg));
301e8125 841 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
a29a5827
NIS		 842 PUTBACK;
843 ENTER;
844 call_sv((SV *)cv, G_VOID);
845 LEAVE;
846 SPAGAIN;
cbdc8872 847 }
301e8125
NIS		 848 else if (ckWARN(WARN_UNTIE)) {
849 if (mg && SvREFCNT(obj) > 1)
850 Perl_warner(aTHX_ WARN_UNTIE,
851 "untie attempted while %"UVuf" inner references still exist",
852 (UV)SvREFCNT(obj) - 1 ) ;
853 }
cbdc8872 854 }
33c27489 855 sv_unmagic(sv, how);
55497cff 856 RETPUSHYES;
a0d0e21e
LW		 857}
858
c07a80fd 859PP(pp_tied)
860{
39644a26 861 dSP;
33c27489
GS		 862 SV *sv = POPs;
863 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) ? 'P' : 'q';
864 MAGIC *mg;
c07a80fd 865
155aba94 866 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 867 SV *osv = SvTIED_obj(sv, mg);
868 if (osv == mg->mg_obj)
869 osv = sv_mortalcopy(osv);
870 PUSHs(osv);
871 RETURN;
c07a80fd 872 }
c07a80fd 873 RETPUSHUNDEF;
874}
875
a0d0e21e
LW		 876PP(pp_dbmopen)
877{
39644a26 878 dSP;
a0d0e21e
LW		 879 HV *hv;
880 dPOPPOPssrl;
881 HV* stash;
882 GV *gv;
a0d0e21e
LW		 883 SV *sv;
884
885 hv = (HV*)POPs;
886
3280af22 887 sv = sv_mortalcopy(&PL_sv_no);
a0d0e21e
LW		 888 sv_setpv(sv, "AnyDBM_File");
889 stash = gv_stashsv(sv, FALSE);
8ebc5c01 890 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 891 PUTBACK;
864dbfa3 892 require_pv("AnyDBM_File.pm");
a0d0e21e 893 SPAGAIN;
8ebc5c01 894 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 895 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 896 }
897
57d3b86d 898 ENTER;
924508f0 899 PUSHMARK(SP);
6b05c17a 900
924508f0 901 EXTEND(SP, 5);
a0d0e21e
LW		 902 PUSHs(sv);
903 PUSHs(left);
904 if (SvIV(right))
b448e4fe 905 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
a0d0e21e 906 else
b448e4fe 907 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
a0d0e21e 908 PUSHs(right);
57d3b86d 909 PUTBACK;
864dbfa3 910 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 911 SPAGAIN;
912
913 if (!sv_isobject(TOPs)) {
924508f0
GS		 914 SP--;
915 PUSHMARK(SP);
a0d0e21e
LW		 916 PUSHs(sv);
917 PUSHs(left);
b448e4fe 918 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
a0d0e21e 919 PUSHs(right);
a0d0e21e 920 PUTBACK;
864dbfa3 921 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 922 SPAGAIN;
923 }
924
6b05c17a 925 if (sv_isobject(TOPs)) {
301e8125 926 sv_unmagic((SV *) hv, 'P');
a0d0e21e 927 sv_magic((SV*)hv, TOPs, 'P', Nullch, 0);
6b05c17a 928 }
a0d0e21e
LW		 929 LEAVE;
930 RETURN;
931}
932
933PP(pp_dbmclose)
934{
cea2e8a9 935 return pp_untie();
a0d0e21e
LW		 936}
937
938PP(pp_sselect)
939{
39644a26 940 dSP; dTARGET;
a0d0e21e
LW		 941#ifdef HAS_SELECT
942 register I32 i;
943 register I32 j;
944 register char *s;
945 register SV *sv;
65202027 946 NV value;
a0d0e21e
LW		 947 I32 maxlen = 0;
948 I32 nfound;
949 struct timeval timebuf;
950 struct timeval *tbuf = &timebuf;
951 I32 growsize;
952 char *fd_sets[4];
2d8e6c8d 953 STRLEN n_a;
a0d0e21e
LW		 954#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
955 I32 masksize;
956 I32 offset;
957 I32 k;
958
959# if BYTEORDER & 0xf0000
960# define ORDERBYTE (0x88888888 - BYTEORDER)
961# else
962# define ORDERBYTE (0x4444 - BYTEORDER)
963# endif
964
965#endif
966
967 SP -= 4;
968 for (i = 1; i <= 3; i++) {
969 if (!SvPOK(SP[i]))
970 continue;
971 j = SvCUR(SP[i]);
972 if (maxlen < j)
973 maxlen = j;
974 }
975
5ff3f7a4 976/* little endians can use vecs directly */
a0d0e21e 977#if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
5ff3f7a4 978# if SELECT_MIN_BITS > 1
f2da832e
JH		 979 /* If SELECT_MIN_BITS is greater than one we most probably will want
980 * to align the sizes with SELECT_MIN_BITS/8 because for example
981 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
f556e5b9 982 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
8f1f23e8 983 * on (sets/tests/clears bits) is 32 bits. */
f2da832e 984 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
5ff3f7a4 985# else
4633a7c4 986 growsize = sizeof(fd_set);
5ff3f7a4
GS		 987# endif
988# else
989# ifdef NFDBITS
a0d0e21e 990
5ff3f7a4
GS		 991# ifndef NBBY
992# define NBBY 8
993# endif
a0d0e21e
LW		 994
995 masksize = NFDBITS / NBBY;
5ff3f7a4 996# else
a0d0e21e 997 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 998# endif
a0d0e21e
LW		 999 growsize = maxlen + (masksize - (maxlen % masksize));
1000 Zero(&fd_sets[0], 4, char*);
1001#endif
1002
1003 sv = SP[4];
1004 if (SvOK(sv)) {
1005 value = SvNV(sv);
1006 if (value < 0.0)
1007 value = 0.0;
1008 timebuf.tv_sec = (long)value;
65202027 1009 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1010 timebuf.tv_usec = (long)(value * 1000000.0);
1011 }
1012 else
1013 tbuf = Null(struct timeval*);
1014
1015 for (i = 1; i <= 3; i++) {
1016 sv = SP[i];
1017 if (!SvOK(sv)) {
1018 fd_sets[i] = 0;
1019 continue;
1020 }
1021 else if (!SvPOK(sv))
2d8e6c8d 1022 SvPV_force(sv,n_a); /* force string conversion */
a0d0e21e
LW		 1023 j = SvLEN(sv);
1024 if (j < growsize) {
1025 Sv_Grow(sv, growsize);
a0d0e21e 1026 }
c07a80fd 1027 j = SvCUR(sv);
1028 s = SvPVX(sv) + j;
1029 while (++j <= growsize) {
1030 *s++ = '\0';
1031 }
1032
a0d0e21e
LW		 1033#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1034 s = SvPVX(sv);
1035 New(403, fd_sets[i], growsize, char);
1036 for (offset = 0; offset < growsize; offset += masksize) {
1037 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1038 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1039 }
1040#else
1041 fd_sets[i] = SvPVX(sv);
1042#endif
1043 }
1044
6ad3d225 1045 nfound = PerlSock_select(
a0d0e21e
LW		 1046 maxlen * 8,
1047 (Select_fd_set_t) fd_sets[1],
1048 (Select_fd_set_t) fd_sets[2],
1049 (Select_fd_set_t) fd_sets[3],
1050 tbuf);
1051 for (i = 1; i <= 3; i++) {
1052 if (fd_sets[i]) {
1053 sv = SP[i];
1054#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1055 s = SvPVX(sv);
1056 for (offset = 0; offset < growsize; offset += masksize) {
1057 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1058 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1059 }
1060 Safefree(fd_sets[i]);
1061#endif
1062 SvSETMAGIC(sv);
1063 }
1064 }
1065
1066 PUSHi(nfound);
1067 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1068 value = (NV)(timebuf.tv_sec) +
1069 (NV)(timebuf.tv_usec) / 1000000.0;
3280af22 1070 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 1071 sv_setnv(sv, value);
1072 }
1073 RETURN;
1074#else
cea2e8a9 1075 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1076#endif
1077}
1078
4633a7c4 1079void
864dbfa3 1080Perl_setdefout(pTHX_ GV *gv)
4633a7c4
LW		 1081{
1082 if (gv)
1083 (void)SvREFCNT_inc(gv);
3280af22
NIS		 1084 if (PL_defoutgv)
1085 SvREFCNT_dec(PL_defoutgv);
1086 PL_defoutgv = gv;
4633a7c4
LW		 1087}
1088
a0d0e21e
LW		 1089PP(pp_select)
1090{
39644a26 1091 dSP; dTARGET;
4633a7c4
LW		 1092 GV *newdefout, *egv;
1093 HV *hv;
1094
533c011a 1095 newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
4633a7c4 1096
3280af22 1097 egv = GvEGV(PL_defoutgv);
4633a7c4 1098 if (!egv)
3280af22 1099 egv = PL_defoutgv;
4633a7c4
LW		 1100 hv = GvSTASH(egv);
1101 if (! hv)
3280af22 1102 XPUSHs(&PL_sv_undef);
4633a7c4 1103 else {
cbdc8872 1104 GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1105 if (gvp && *gvp == egv) {
f7aaccc2 1106 gv_efullname4(TARG, PL_defoutgv, Nullch, TRUE);
f86702cc 1107 XPUSHTARG;
1108 }
1109 else {
1110 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1111 }
4633a7c4
LW		 1112 }
1113
1114 if (newdefout) {
ded8aa31
GS		 1115 if (!GvIO(newdefout))
1116 gv_IOadd(newdefout);
4633a7c4
LW		 1117 setdefout(newdefout);
1118 }
1119
a0d0e21e
LW		 1120 RETURN;
1121}
1122
1123PP(pp_getc)
1124{
39644a26 1125 dSP; dTARGET;
a0d0e21e 1126 GV *gv;
2ae324a7 1127 MAGIC *mg;
a0d0e21e 1128
32da55ab 1129 if (MAXARG == 0)
3280af22 1130 gv = PL_stdingv;
a0d0e21e
LW		 1131 else
1132 gv = (GV*)POPs;
2ae324a7 1133
155aba94 1134 if ((mg = SvTIED_mg((SV*)gv, 'q'))) {
54310121 1135 I32 gimme = GIMME_V;
2ae324a7 1136 PUSHMARK(SP);
33c27489 1137 XPUSHs(SvTIED_obj((SV*)gv, mg));
2ae324a7 1138 PUTBACK;
1139 ENTER;
864dbfa3 1140 call_method("GETC", gimme);
2ae324a7 1141 LEAVE;
1142 SPAGAIN;
54310121 1143 if (gimme == G_SCALAR)
1144 SvSetMagicSV_nosteal(TARG, TOPs);
2ae324a7 1145 RETURN;
1146 }
9bc64814 1147 if (!gv || do_eof(gv)) /* make sure we have fp with something */
a0d0e21e 1148 RETPUSHUNDEF;
bbce6d69 1149 TAINT;
a0d0e21e 1150 sv_setpv(TARG, " ");
9bc64814 1151 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1152 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1153 /* Find out how many bytes the char needs */
1154 Size_t len = UTF8SKIP(SvPVX(TARG));
1155 if (len > 1) {
1156 SvGROW(TARG,len+1);
1157 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1158 SvCUR_set(TARG,1+len);
1159 }
1160 SvUTF8_on(TARG);
1161 }
a0d0e21e
LW		 1162 PUSHTARG;
1163 RETURN;
1164}
1165
1166PP(pp_read)
1167{
cea2e8a9 1168 return pp_sysread();
a0d0e21e
LW		 1169}
1170
76e3520e 1171STATIC OP *
cea2e8a9 1172S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1173{
c09156bb 1174 register PERL_CONTEXT *cx;
54310121 1175 I32 gimme = GIMME_V;
a0d0e21e
LW		 1176 AV* padlist = CvPADLIST(cv);
1177 SV** svp = AvARRAY(padlist);
1178
1179 ENTER;
1180 SAVETMPS;
1181
1182 push_return(retop);
146174a9 1183 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
a0d0e21e 1184 PUSHFORMAT(cx);
146174a9 1185 SAVEVPTR(PL_curpad);
3280af22 1186 PL_curpad = AvARRAY((AV*)svp[1]);
a0d0e21e 1187
4633a7c4 1188 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1189 return CvSTART(cv);
1190}
1191
1192PP(pp_enterwrite)
1193{
39644a26 1194 dSP;
a0d0e21e
LW		 1195 register GV *gv;
1196 register IO *io;
1197 GV *fgv;
1198 CV *cv;
1199
1200 if (MAXARG == 0)
3280af22 1201 gv = PL_defoutgv;
a0d0e21e
LW		 1202 else {
1203 gv = (GV*)POPs;
1204 if (!gv)
3280af22 1205 gv = PL_defoutgv;
a0d0e21e
LW		 1206 }
1207 EXTEND(SP, 1);
1208 io = GvIO(gv);
1209 if (!io) {
1210 RETPUSHNO;
1211 }
1212 if (IoFMT_GV(io))
1213 fgv = IoFMT_GV(io);
1214 else
1215 fgv = gv;
1216
1217 cv = GvFORM(fgv);
a0d0e21e 1218 if (!cv) {
2dd78f96 1219 char *name = NULL;
a0d0e21e 1220 if (fgv) {
748a9306 1221 SV *tmpsv = sv_newmortal();
43693395 1222 gv_efullname4(tmpsv, fgv, Nullch, FALSE);
2dd78f96 1223 name = SvPV_nolen(tmpsv);
a0d0e21e 1224 }
2dd78f96
JH		 1225 if (name && *name)
1226 DIE(aTHX_ "Undefined format \"%s\" called", name);
cea2e8a9 1227 DIE(aTHX_ "Not a format reference");
a0d0e21e 1228 }
44a8e56a 1229 if (CvCLONE(cv))
1230 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1231
44a8e56a 1232 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1233 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1234}
1235
1236PP(pp_leavewrite)
1237{
39644a26 1238 dSP;
a0d0e21e
LW		 1239 GV *gv = cxstack[cxstack_ix].blk_sub.gv;
1240 register IO *io = GvIOp(gv);
760ac839
LW		 1241 PerlIO *ofp = IoOFP(io);
1242 PerlIO *fp;
a0d0e21e
LW		 1243 SV **newsp;
1244 I32 gimme;
c09156bb 1245 register PERL_CONTEXT *cx;
a0d0e21e 1246
760ac839 1247 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1248 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
7ef822cd
JH		 1249 if (!io || !ofp)
1250 goto forget_top;
3280af22
NIS		 1251 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1252 PL_formtarget != PL_toptarget)
a0d0e21e 1253 {
4633a7c4
LW		 1254 GV *fgv;
1255 CV *cv;
a0d0e21e
LW		 1256 if (!IoTOP_GV(io)) {
1257 GV *topgv;
46fc3d4c 1258 SV *topname;
a0d0e21e
LW		 1259
1260 if (!IoTOP_NAME(io)) {
1261 if (!IoFMT_NAME(io))
1262 IoFMT_NAME(io) = savepv(GvNAME(gv));
cea2e8a9 1263 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", IoFMT_NAME(io)));
46fc3d4c 1264 topgv = gv_fetchpv(SvPVX(topname), FALSE, SVt_PVFM);
748a9306 1265 if ((topgv && GvFORM(topgv)) ||
a0d0e21e 1266 !gv_fetchpv("top",FALSE,SVt_PVFM))
46fc3d4c 1267 IoTOP_NAME(io) = savepv(SvPVX(topname));
a0d0e21e
LW		 1268 else
1269 IoTOP_NAME(io) = savepv("top");
1270 }
1271 topgv = gv_fetchpv(IoTOP_NAME(io),FALSE, SVt_PVFM);
1272 if (!topgv || !GvFORM(topgv)) {
1273 IoLINES_LEFT(io) = 100000000;
1274 goto forget_top;
1275 }
1276 IoTOP_GV(io) = topgv;
1277 }
748a9306
LW		 1278 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1279 I32 lines = IoLINES_LEFT(io);
3280af22 1280 char *s = SvPVX(PL_formtarget);
8e07c86e
AD		 1281 if (lines <= 0) /* Yow, header didn't even fit!!! */
1282 goto forget_top;
748a9306
LW		 1283 while (lines-- > 0) {
1284 s = strchr(s, '\n');
1285 if (!s)
1286 break;
1287 s++;
1288 }
1289 if (s) {
d75029d0
NIS		 1290 STRLEN save = SvCUR(PL_formtarget);
1291 SvCUR_set(PL_formtarget, s - SvPVX(PL_formtarget));
1292 do_print(PL_formtarget, ofp);
1293 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1294 sv_chop(PL_formtarget, s);
1295 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1296 }
1297 }
a0d0e21e 1298 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1299 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1300 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1301 IoPAGE(io)++;
3280af22 1302 PL_formtarget = PL_toptarget;
748a9306 1303 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1304 fgv = IoTOP_GV(io);
1305 if (!fgv)
cea2e8a9 1306 DIE(aTHX_ "bad top format reference");
4633a7c4 1307 cv = GvFORM(fgv);
2dd78f96
JH		 1308 {
1309 char *name = NULL;
1310 if (!cv) {
1311 SV *sv = sv_newmortal();
1312 gv_efullname4(sv, fgv, Nullch, FALSE);
1313 name = SvPV_nolen(sv);
1314 }
1315 if (name && *name)
1316 DIE(aTHX_ "Undefined top format \"%s\" called",name);
1317 /* why no:
1318 else
1319 DIE(aTHX_ "Undefined top format called");
1320 ?*/
4633a7c4 1321 }
44a8e56a 1322 if (CvCLONE(cv))
1323 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
533c011a 1324 return doform(cv,gv,PL_op);
a0d0e21e
LW		 1325 }
1326
1327 forget_top:
3280af22 1328 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1329 POPFORMAT(cx);
1330 LEAVE;
1331
1332 fp = IoOFP(io);
1333 if (!fp) {
599cee73 1334 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
cb50131a 1335 if (IoIFP(io)) {
2dd78f96
JH		 1336 /* integrate with report_evil_fh()? */
1337 char *name = NULL;
1338 if (isGV(gv)) {
1339 SV* sv = sv_newmortal();
1340 gv_efullname4(sv, gv, Nullch, FALSE);
1341 name = SvPV_nolen(sv);
1342 }
1343 if (name && *name)
1344 Perl_warner(aTHX_ WARN_IO,
1345 "Filehandle %s opened only for input", name);
1346 else
1347 Perl_warner(aTHX_ WARN_IO,
1348 "Filehandle opened only for input");
cb50131a 1349 }
599cee73 1350 else if (ckWARN(WARN_CLOSED))
bc37a18f 1351 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1352 }
3280af22 1353 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1354 }
1355 else {
3280af22 1356 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1357 if (ckWARN(WARN_IO))
cea2e8a9 1358 Perl_warner(aTHX_ WARN_IO, "page overflow");
a0d0e21e 1359 }
d75029d0 1360 if (!do_print(PL_formtarget, fp))
3280af22 1361 PUSHs(&PL_sv_no);
a0d0e21e 1362 else {
3280af22
NIS		 1363 FmLINES(PL_formtarget) = 0;
1364 SvCUR_set(PL_formtarget, 0);
1365 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1366 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1367 (void)PerlIO_flush(fp);
3280af22 1368 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1369 }
1370 }
9cbac4c7 1371 /* bad_ofp: */
3280af22 1372 PL_formtarget = PL_bodytarget;
a0d0e21e
LW		 1373 PUTBACK;
1374 return pop_return();
1375}
1376
1377PP(pp_prtf)
1378{
39644a26 1379 dSP; dMARK; dORIGMARK;
a0d0e21e
LW		 1380 GV *gv;
1381 IO *io;
760ac839 1382 PerlIO *fp;
26db47c4 1383 SV *sv;
46fc3d4c 1384 MAGIC *mg;
a0d0e21e 1385
533c011a 1386 if (PL_op->op_flags & OPf_STACKED)
a0d0e21e
LW		 1387 gv = (GV*)*++MARK;
1388 else
3280af22 1389 gv = PL_defoutgv;
46fc3d4c 1390
155aba94 1391 if ((mg = SvTIED_mg((SV*)gv, 'q'))) {
46fc3d4c 1392 if (MARK == ORIGMARK) {
4352c267 1393 MEXTEND(SP, 1);
46fc3d4c 1394 ++MARK;
1395 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1396 ++SP;
1397 }
1398 PUSHMARK(MARK - 1);
33c27489 1399 *MARK = SvTIED_obj((SV*)gv, mg);
46fc3d4c 1400 PUTBACK;
1401 ENTER;
864dbfa3 1402 call_method("PRINTF", G_SCALAR);
46fc3d4c 1403 LEAVE;
1404 SPAGAIN;
1405 MARK = ORIGMARK + 1;
1406 *MARK = *SP;
1407 SP = MARK;
1408 RETURN;
1409 }
1410
26db47c4 1411 sv = NEWSV(0,0);
a0d0e21e 1412 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1413 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1414 report_evil_fh(gv, io, PL_op->op_type);
748a9306 1415 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 1416 goto just_say_no;
1417 }
1418 else if (!(fp = IoOFP(io))) {
599cee73 1419 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
2dd78f96 1420 /* integrate with report_evil_fh()? */
cb50131a 1421 if (IoIFP(io)) {
2dd78f96
JH		 1422 char *name = NULL;
1423 if (isGV(gv)) {
1424 gv_efullname4(sv, gv, Nullch, FALSE);
1425 name = SvPV_nolen(sv);
1426 }
1427 if (name && *name)
1428 Perl_warner(aTHX_ WARN_IO,
1429 "Filehandle %s opened only for input", name);
1430 else
1431 Perl_warner(aTHX_ WARN_IO,
1432 "Filehandle opened only for input");
cb50131a 1433 }
599cee73 1434 else if (ckWARN(WARN_CLOSED))
bc37a18f 1435 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1436 }
748a9306 1437 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
a0d0e21e
LW		 1438 goto just_say_no;
1439 }
1440 else {
1441 do_sprintf(sv, SP - MARK, MARK + 1);
1442 if (!do_print(sv, fp))
1443 goto just_say_no;
1444
1445 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1446 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1447 goto just_say_no;
1448 }
1449 SvREFCNT_dec(sv);
1450 SP = ORIGMARK;
3280af22 1451 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1452 RETURN;
1453
1454 just_say_no:
1455 SvREFCNT_dec(sv);
1456 SP = ORIGMARK;
3280af22 1457 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1458 RETURN;
1459}
1460
c07a80fd 1461PP(pp_sysopen)
1462{
39644a26 1463 dSP;
c07a80fd 1464 GV *gv;
c07a80fd 1465 SV *sv;
1466 char *tmps;
1467 STRLEN len;
1468 int mode, perm;
1469
1470 if (MAXARG > 3)
1471 perm = POPi;
1472 else
1473 perm = 0666;
1474 mode = POPi;
1475 sv = POPs;
1476 gv = (GV *)POPs;
1477
4592e6ca
NIS		 1478 /* Need TIEHANDLE method ? */
1479
c07a80fd 1480 tmps = SvPV(sv, len);
1481 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1482 IoLINES(GvIOp(gv)) = 0;
3280af22 1483 PUSHs(&PL_sv_yes);
c07a80fd 1484 }
1485 else {
3280af22 1486 PUSHs(&PL_sv_undef);
c07a80fd 1487 }
1488 RETURN;
1489}
1490
a0d0e21e
LW		 1491PP(pp_sysread)
1492{
39644a26 1493 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1494 int offset;
1495 GV *gv;
1496 IO *io;
1497 char *buffer;
5b54f415 1498 SSize_t length;
eb5c063a 1499 SSize_t count;
1e422769 1500 Sock_size_t bufsize;
748a9306 1501 SV *bufsv;
a0d0e21e 1502 STRLEN blen;
2ae324a7 1503 MAGIC *mg;
eb5c063a
NIS		 1504 int fp_utf8;
1505 Size_t got = 0;
1506 Size_t wanted;
a0d0e21e
LW		 1507
1508 gv = (GV*)*++MARK;
533c011a 1509 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD) &&
33c27489 1510 (mg = SvTIED_mg((SV*)gv, 'q')))
137443ea 1511 {
2ae324a7 1512 SV *sv;
1513
1514 PUSHMARK(MARK-1);
33c27489 1515 *MARK = SvTIED_obj((SV*)gv, mg);
2ae324a7 1516 ENTER;
864dbfa3 1517 call_method("READ", G_SCALAR);
2ae324a7 1518 LEAVE;
1519 SPAGAIN;
1520 sv = POPs;
1521 SP = ORIGMARK;
1522 PUSHs(sv);
1523 RETURN;
1524 }
1525
a0d0e21e
LW		 1526 if (!gv)
1527 goto say_undef;
748a9306 1528 bufsv = *++MARK;
ff68c719 1529 if (! SvOK(bufsv))
1530 sv_setpvn(bufsv, "", 0);
a0d0e21e 1531 length = SvIVx(*++MARK);
748a9306 1532 SETERRNO(0,0);
a0d0e21e
LW		 1533 if (MARK < SP)
1534 offset = SvIVx(*++MARK);
1535 else
1536 offset = 0;
1537 io = GvIO(gv);
1538 if (!io || !IoIFP(io))
1539 goto say_undef;
eb5c063a 1540 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTE) {
7d59b7e4 1541 buffer = SvPVutf8_force(bufsv, blen);
eb5c063a
NIS		 1542 /* UTF8 may not have been set if they are all low bytes */
1543 SvUTF8_on(bufsv);
7d59b7e4
NIS		 1544 }
1545 else {
1546 buffer = SvPV_force(bufsv, blen);
1547 }
1548 if (length < 0)
1549 DIE(aTHX_ "Negative length");
eb5c063a 1550 wanted = length;
7d59b7e4 1551
a0d0e21e 1552#ifdef HAS_SOCKET
533c011a 1553 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1554 char namebuf[MAXPATHLEN];
eec2d3df 1555#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE)
490ab354
JH		 1556 bufsize = sizeof (struct sockaddr_in);
1557#else
46fc3d4c 1558 bufsize = sizeof namebuf;
490ab354 1559#endif
abf95952
IZ		 1560#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1561 if (bufsize >= 256)
1562 bufsize = 255;
1563#endif
748a9306 1564 buffer = SvGROW(bufsv, length+1);
bbce6d69 1565 /* 'offset' means 'flags' here */
eb5c063a 1566 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
46fc3d4c 1567 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1568 if (count < 0)
a0d0e21e 1569 RETPUSHUNDEF;
eb5c063a 1570 SvCUR_set(bufsv, count);
748a9306
LW		 1571 *SvEND(bufsv) = '\0';
1572 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1573 if (fp_utf8)
1574 SvUTF8_on(bufsv);
748a9306 1575 SvSETMAGIC(bufsv);
aac0dd9a 1576 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1577 if (!(IoFLAGS(io) & IOf_UNTAINT))
1578 SvTAINTED_on(bufsv);
a0d0e21e 1579 SP = ORIGMARK;
d3b9c689
RG		 1580#if defined(I_SYS_UN) && defined(__linux__)
1581 /* Linux returns the sum of actual pathname string length and the
1582 size of the other members of sockaddr_un members. It should
1583 return sizeof(struct sockaddr_un). */
1584 if (((struct sockaddr *)namebuf)->sa_family == AF_UNIX)
1585 bufsize = sizeof(struct sockaddr_un);
1586#endif
46fc3d4c 1587 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1588 PUSHs(TARG);
1589 RETURN;
1590 }
1591#else
911d147d 1592 if (PL_op->op_type == OP_RECV)
cea2e8a9 1593 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1594#endif
eb5c063a
NIS		 1595 if (DO_UTF8(bufsv)) {
1596 /* offset adjust in characters not bytes */
1597 blen = sv_len_utf8(bufsv);
7d59b7e4 1598 }
bbce6d69 1599 if (offset < 0) {
1600 if (-offset > blen)
cea2e8a9 1601 DIE(aTHX_ "Offset outside string");
bbce6d69 1602 offset += blen;
1603 }
eb5c063a
NIS		 1604 if (DO_UTF8(bufsv)) {
1605 /* convert offset-as-chars to offset-as-bytes */
1606 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1607 }
1608 more_bytes:
cd52b7b2 1609 bufsize = SvCUR(bufsv);
eb5c063a 1610 buffer = SvGROW(bufsv, length+offset+1);
cd52b7b2 1611 if (offset > bufsize) { /* Zero any newly allocated space */
1612 Zero(buffer+bufsize, offset-bufsize, char);
1613 }
eb5c063a
NIS		 1614 buffer = buffer + offset;
1615
533c011a 1616 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1617#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1618 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1619 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1620 buffer, length, 0);
a7092146
GS		 1621 }
1622 else
1623#endif
1624 {
eb5c063a
NIS		 1625 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1626 buffer, length);
a7092146 1627 }
a0d0e21e
LW		 1628 }
1629 else
1630#ifdef HAS_SOCKET__bad_code_maybe
50952442 1631 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1632 char namebuf[MAXPATHLEN];
490ab354
JH		 1633#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1634 bufsize = sizeof (struct sockaddr_in);
1635#else
46fc3d4c 1636 bufsize = sizeof namebuf;
490ab354 1637#endif
eb5c063a 1638 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1639 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1640 }
1641 else
1642#endif
3b02c43c 1643 {
eb5c063a
NIS		 1644 count = PerlIO_read(IoIFP(io), buffer, length);
1645 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1646 if (count == 0 && PerlIO_error(IoIFP(io)))
1647 count = -1;
3b02c43c 1648 }
eb5c063a 1649 if (count < 0) {
a00b5bd3 1650 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
af8c498a 1651 {
2dd78f96
JH		 1652 /* integrate with report_evil_fh()? */
1653 char *name = NULL;
1654 if (isGV(gv)) {
1655 SV* sv = sv_newmortal();
1656 gv_efullname4(sv, gv, Nullch, FALSE);
1657 name = SvPV_nolen(sv);
1658 }
1659 if (name && *name)
1660 Perl_warner(aTHX_ WARN_IO,
1661 "Filehandle %s opened only for output", name);
1662 else
1663 Perl_warner(aTHX_ WARN_IO,
1664 "Filehandle opened only for output");
af8c498a 1665 }
a0d0e21e 1666 goto say_undef;
af8c498a 1667 }
eb5c063a 1668 SvCUR_set(bufsv, count+(buffer - SvPVX(bufsv)));
748a9306
LW		 1669 *SvEND(bufsv) = '\0';
1670 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1671 if (fp_utf8 && !IN_BYTE) {
1672 /* Look at utf8 we got back and count the characters */
1673 char *bend = buffer + count;
1674 while (buffer < bend) {
1675 STRLEN skip = UTF8SKIP(buffer);
1676 if (buffer+skip > bend) {
1677 /* partial character - try for rest of it */
1678 length = skip - (bend-buffer);
1679 offset = bend - SvPVX(bufsv);
1680 goto more_bytes;
1681 }
1682 else {
1683 got++;
1684 buffer += skip;
1685 }
1686 }
1687 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1688 provided amount read (count) was what was requested (length)
1689 */
1690 if (got < wanted && count == length) {
1691 length = (wanted-got);
1692 offset = bend - SvPVX(bufsv);
1693 goto more_bytes;
1694 }
1695 /* return value is character count */
1696 count = got;
1697 SvUTF8_on(bufsv);
1698 }
748a9306 1699 SvSETMAGIC(bufsv);
aac0dd9a 1700 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1701 if (!(IoFLAGS(io) & IOf_UNTAINT))
1702 SvTAINTED_on(bufsv);
a0d0e21e 1703 SP = ORIGMARK;
eb5c063a 1704 PUSHi(count);
a0d0e21e
LW		 1705 RETURN;
1706
1707 say_undef:
1708 SP = ORIGMARK;
1709 RETPUSHUNDEF;
1710}
1711
1712PP(pp_syswrite)
1713{
39644a26 1714 dSP;
092bebab
JH		 1715 int items = (SP - PL_stack_base) - TOPMARK;
1716 if (items == 2) {
9f089d78 1717 SV *sv;
092bebab 1718 EXTEND(SP, 1);
9f089d78
SB		 1719 sv = sv_2mortal(newSViv(sv_len(*SP)));
1720 PUSHs(sv);
092bebab
JH		 1721 PUTBACK;
1722 }
cea2e8a9 1723 return pp_send();
a0d0e21e
LW		 1724}
1725
1726PP(pp_send)
1727{
39644a26 1728 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1729 GV *gv;
1730 IO *io;
748a9306 1731 SV *bufsv;
a0d0e21e 1732 char *buffer;
8c99d73e
GS		 1733 Size_t length;
1734 SSize_t retval;
a0d0e21e 1735 STRLEN blen;
1d603a67 1736 MAGIC *mg;
a0d0e21e
LW		 1737
1738 gv = (GV*)*++MARK;
33c27489 1739 if (PL_op->op_type == OP_SYSWRITE && (mg = SvTIED_mg((SV*)gv, 'q'))) {
1d603a67
GB		 1740 SV *sv;
1741
1742 PUSHMARK(MARK-1);
33c27489 1743 *MARK = SvTIED_obj((SV*)gv, mg);
1d603a67 1744 ENTER;
864dbfa3 1745 call_method("WRITE", G_SCALAR);
1d603a67
GB		 1746 LEAVE;
1747 SPAGAIN;
1748 sv = POPs;
1749 SP = ORIGMARK;
1750 PUSHs(sv);
1751 RETURN;
1752 }
a0d0e21e
LW		 1753 if (!gv)
1754 goto say_undef;
748a9306 1755 bufsv = *++MARK;
8c99d73e 1756#if Size_t_size > IVSIZE
3c001241 1757 length = (Size_t)SvNVx(*++MARK);
146174a9 1758#else
3c001241 1759 length = (Size_t)SvIVx(*++MARK);
146174a9 1760#endif
3c001241 1761 if ((SSize_t)length < 0)
cea2e8a9 1762 DIE(aTHX_ "Negative length");
748a9306 1763 SETERRNO(0,0);
a0d0e21e
LW		 1764 io = GvIO(gv);
1765 if (!io || !IoIFP(io)) {
8c99d73e 1766 retval = -1;
bc37a18f
RG		 1767 if (ckWARN(WARN_CLOSED))
1768 report_evil_fh(gv, io, PL_op->op_type);
7d59b7e4
NIS		 1769 goto say_undef;
1770 }
1771
1772 if (PerlIO_isutf8(IoIFP(io))) {
1773 buffer = SvPVutf8(bufsv, blen);
a0d0e21e 1774 }
7d59b7e4
NIS		 1775 else {
1776 if (DO_UTF8(bufsv))
1777 sv_utf8_downgrade(bufsv, FALSE);
1778 buffer = SvPV(bufsv, blen);
1779 }
1780
1781 if (PL_op->op_type == OP_SYSWRITE) {
1782 IV offset;
1783 if (DO_UTF8(bufsv)) {
1784 /* length and offset are in chars */
1785 blen = sv_len_utf8(bufsv);
1786 }
bbce6d69 1787 if (MARK < SP) {
a0d0e21e 1788 offset = SvIVx(*++MARK);
bbce6d69 1789 if (offset < 0) {
1790 if (-offset > blen)
cea2e8a9 1791 DIE(aTHX_ "Offset outside string");
bbce6d69 1792 offset += blen;
fb73857a 1793 } else if (offset >= blen && blen > 0)
cea2e8a9 1794 DIE(aTHX_ "Offset outside string");
bbce6d69 1795 } else
a0d0e21e
LW		 1796 offset = 0;
1797 if (length > blen - offset)
1798 length = blen - offset;
7d59b7e4 1799 if (DO_UTF8(bufsv)) {
c8d31a35 1800 buffer = (char*)utf8_hop((U8 *)buffer, offset);
7d59b7e4
NIS		 1801 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1802 }
1803 else {
1804 buffer = buffer+offset;
1805 }
a7092146 1806#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1807 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1808 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1809 buffer, length, 0);
a7092146
GS		 1810 }
1811 else
1812#endif
1813 {
94e4c244 1814 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1815 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1816 buffer, length);
a7092146 1817 }
a0d0e21e
LW		 1818 }
1819#ifdef HAS_SOCKET
1820 else if (SP > MARK) {
1821 char *sockbuf;
1822 STRLEN mlen;
1823 sockbuf = SvPVx(*++MARK, mlen);
7d59b7e4 1824 /* length is really flags */
8c99d73e
GS		 1825 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1826 length, (struct sockaddr *)sockbuf, mlen);
a0d0e21e
LW		 1827 }
1828 else
7d59b7e4 1829 /* length is really flags */
8c99d73e 1830 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
a0d0e21e
LW		 1831#else
1832 else
cea2e8a9 1833 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1834#endif
8c99d73e 1835 if (retval < 0)
a0d0e21e
LW		 1836 goto say_undef;
1837 SP = ORIGMARK;
8c99d73e
GS		 1838#if Size_t_size > IVSIZE
1839 PUSHn(retval);
1840#else
1841 PUSHi(retval);
1842#endif
a0d0e21e
LW		 1843 RETURN;
1844
1845 say_undef:
1846 SP = ORIGMARK;
1847 RETPUSHUNDEF;
1848}
1849
1850PP(pp_recv)
1851{
cea2e8a9 1852 return pp_sysread();
a0d0e21e
LW		 1853}
1854
1855PP(pp_eof)
1856{
39644a26 1857 dSP;
a0d0e21e 1858 GV *gv;
4592e6ca 1859 MAGIC *mg;
a0d0e21e 1860
32da55ab 1861 if (MAXARG == 0) {
146174a9
CB		 1862 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1863 IO *io;
1864 gv = PL_last_in_gv = PL_argvgv;
1865 io = GvIO(gv);
1866 if (io && !IoIFP(io)) {
1867 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1868 IoLINES(io) = 0;
1869 IoFLAGS(io) &= ~IOf_START;
1870 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
1871 sv_setpvn(GvSV(gv), "-", 1);
1872 SvSETMAGIC(GvSV(gv));
1873 }
1874 else if (!nextargv(gv))
1875 RETPUSHYES;
1876 }
1877 }
1878 else
1879 gv = PL_last_in_gv; /* eof */
1880 }
a0d0e21e 1881 else
146174a9 1882 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca
NIS		 1883
1884 if (gv && (mg = SvTIED_mg((SV*)gv, 'q'))) {
1885 PUSHMARK(SP);
1886 XPUSHs(SvTIED_obj((SV*)gv, mg));
1887 PUTBACK;
1888 ENTER;
864dbfa3 1889 call_method("EOF", G_SCALAR);
4592e6ca
NIS		 1890 LEAVE;
1891 SPAGAIN;
1892 RETURN;
1893 }
1894
54310121 1895 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 1896 RETURN;
1897}
1898
1899PP(pp_tell)
1900{
39644a26 1901 dSP; dTARGET;
301e8125 1902 GV *gv;
4592e6ca 1903 MAGIC *mg;
a0d0e21e 1904
32da55ab 1905 if (MAXARG == 0)
3280af22 1906 gv = PL_last_in_gv;
a0d0e21e 1907 else
3280af22 1908 gv = PL_last_in_gv = (GV*)POPs;
4592e6ca
NIS		 1909
1910 if (gv && (mg = SvTIED_mg((SV*)gv, 'q'))) {
1911 PUSHMARK(SP);
1912 XPUSHs(SvTIED_obj((SV*)gv, mg));
1913 PUTBACK;
1914 ENTER;
864dbfa3 1915 call_method("TELL", G_SCALAR);
4592e6ca
NIS		 1916 LEAVE;
1917 SPAGAIN;
1918 RETURN;
1919 }
1920
146174a9
CB		 1921#if LSEEKSIZE > IVSIZE
1922 PUSHn( do_tell(gv) );
1923#else
a0d0e21e 1924 PUSHi( do_tell(gv) );
146174a9 1925#endif
a0d0e21e
LW		 1926 RETURN;
1927}
1928
1929PP(pp_seek)
1930{
cea2e8a9 1931 return pp_sysseek();
137443ea 1932}
1933
1934PP(pp_sysseek)
1935{
39644a26 1936 dSP;
a0d0e21e
LW		 1937 GV *gv;
1938 int whence = POPi;
146174a9
CB		 1939#if LSEEKSIZE > IVSIZE
1940 Off_t offset = (Off_t)SvNVx(POPs);
1941#else
d9b3e12d 1942 Off_t offset = (Off_t)SvIVx(POPs);
146174a9 1943#endif
4592e6ca 1944 MAGIC *mg;
a0d0e21e 1945
3280af22 1946 gv = PL_last_in_gv = (GV*)POPs;
4592e6ca
NIS		 1947
1948 if (gv && (mg = SvTIED_mg((SV*)gv, 'q'))) {
1949 PUSHMARK(SP);
1950 XPUSHs(SvTIED_obj((SV*)gv, mg));
cb50131a
CB		 1951#if LSEEKSIZE > IVSIZE
1952 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
1953#else
b448e4fe 1954 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 1955#endif
b448e4fe 1956 XPUSHs(sv_2mortal(newSViv(whence)));
4592e6ca
NIS		 1957 PUTBACK;
1958 ENTER;
864dbfa3 1959 call_method("SEEK", G_SCALAR);
4592e6ca
NIS		 1960 LEAVE;
1961 SPAGAIN;
1962 RETURN;
1963 }
1964
533c011a 1965 if (PL_op->op_type == OP_SEEK)
8903cb82 1966 PUSHs(boolSV(do_seek(gv, offset, whence)));
1967 else {
b448e4fe
JH		 1968 Off_t sought = do_sysseek(gv, offset, whence);
1969 if (sought < 0)
146174a9
CB		 1970 PUSHs(&PL_sv_undef);
1971 else {
b448e4fe 1972 SV* sv = sought ?
146174a9 1973#if LSEEKSIZE > IVSIZE
b448e4fe 1974 newSVnv((NV)sought)
146174a9 1975#else
b448e4fe 1976 newSViv(sought)
146174a9
CB		 1977#endif
1978 : newSVpvn(zero_but_true, ZBTLEN);
1979 PUSHs(sv_2mortal(sv));
1980 }
8903cb82 1981 }
a0d0e21e
LW		 1982 RETURN;
1983}
1984
1985PP(pp_truncate)
1986{
39644a26 1987 dSP;
8c99d73e
GS		 1988 /* There seems to be no consensus on the length type of truncate()
1989 * and ftruncate(), both off_t and size_t have supporters. In
1990 * general one would think that when using large files, off_t is
1991 * at least as wide as size_t, so using an off_t should be okay. */
1992 /* XXX Configure probe for the length type of *truncate() needed XXX */
1993 Off_t len;
a0d0e21e
LW		 1994 int result = 1;
1995 GV *tmpgv;
2d8e6c8d 1996 STRLEN n_a;
a0d0e21e 1997
8c99d73e
GS		 1998#if Size_t_size > IVSIZE
1999 len = (Off_t)POPn;
2000#else
2001 len = (Off_t)POPi;
2002#endif
2003 /* Checking for length < 0 is problematic as the type might or
301e8125 2004 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2005 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2006 SETERRNO(0,0);
5d94fbed 2007#if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) || defined(F_FREESP)
533c011a 2008 if (PL_op->op_flags & OPf_SPECIAL) {
2d8e6c8d 2009 tmpgv = gv_fetchpv(POPpx, FALSE, SVt_PVIO);
cbdc8872 2010 do_ftruncate:
1e422769 2011 TAINT_PROPER("truncate");
cb50131a
CB		 2012 if (!GvIO(tmpgv) || !IoIFP(GvIOp(tmpgv)))
2013 result = 0;
2014 else {
2015 PerlIO_flush(IoIFP(GvIOp(tmpgv)));
cbdc8872 2016#ifdef HAS_TRUNCATE
cb50131a 2017 if (ftruncate(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
301e8125 2018#else
cb50131a 2019 if (my_chsize(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
cbdc8872 2020#endif
cb50131a
CB		 2021 result = 0;
2022 }
a0d0e21e
LW		 2023 }
2024 else {
cbdc8872 2025 SV *sv = POPs;
1e422769 2026 char *name;
2d8e6c8d 2027 STRLEN n_a;
1e422769 2028
cbdc8872 2029 if (SvTYPE(sv) == SVt_PVGV) {
2030 tmpgv = (GV*)sv; /* *main::FRED for example */
2031 goto do_ftruncate;
2032 }
2033 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2034 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2035 goto do_ftruncate;
2036 }
1e422769 2037
2d8e6c8d 2038 name = SvPV(sv, n_a);
1e422769 2039 TAINT_PROPER("truncate");
cbdc8872 2040#ifdef HAS_TRUNCATE
1e422769 2041 if (truncate(name, len) < 0)
a0d0e21e 2042 result = 0;
cbdc8872 2043#else
2044 {
2045 int tmpfd;
6ad3d225 2046 if ((tmpfd = PerlLIO_open(name, O_RDWR)) < 0)
bbce6d69 2047 result = 0;
cbdc8872 2048 else {
2049 if (my_chsize(tmpfd, len) < 0)
2050 result = 0;
6ad3d225 2051 PerlLIO_close(tmpfd);
cbdc8872 2052 }
a0d0e21e 2053 }
a0d0e21e 2054#endif
cbdc8872 2055 }
a0d0e21e
LW		 2056
2057 if (result)
2058 RETPUSHYES;
2059 if (!errno)
748a9306 2060 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 2061 RETPUSHUNDEF;
2062#else
cea2e8a9 2063 DIE(aTHX_ "truncate not implemented");
a0d0e21e
LW		 2064#endif
2065}
2066
2067PP(pp_fcntl)
2068{
cea2e8a9 2069 return pp_ioctl();
a0d0e21e
LW		 2070}
2071
2072PP(pp_ioctl)
2073{
39644a26 2074 dSP; dTARGET;
748a9306 2075 SV *argsv = POPs;
a0d0e21e 2076 unsigned int func = U_I(POPn);
533c011a 2077 int optype = PL_op->op_type;
a0d0e21e 2078 char *s;
324aa91a 2079 IV retval;
a0d0e21e 2080 GV *gv = (GV*)POPs;
c289d2f7 2081 IO *io = gv ? GvIOn(gv) : 0;
a0d0e21e 2082
748a9306 2083 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2084 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2085 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2086 SETERRNO(EBADF,RMS$_IFI); /* well, sort of... */
a0d0e21e
LW		 2087 RETPUSHUNDEF;
2088 }
2089
748a9306 2090 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2091 STRLEN len;
324aa91a 2092 STRLEN need;
748a9306 2093 s = SvPV_force(argsv, len);
324aa91a
HF		 2094 need = IOCPARM_LEN(func);
2095 if (len < need) {
2096 s = Sv_Grow(argsv, need + 1);
2097 SvCUR_set(argsv, need);
a0d0e21e
LW		 2098 }
2099
748a9306 2100 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2101 }
2102 else {
748a9306 2103 retval = SvIV(argsv);
c529f79d 2104 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2105 }
2106
2107 TAINT_PROPER(optype == OP_IOCTL ? "ioctl" : "fcntl");
2108
2109 if (optype == OP_IOCTL)
2110#ifdef HAS_IOCTL
76e3520e 2111 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2112#else
cea2e8a9 2113 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2114#endif
2115 else
55497cff 2116#ifdef HAS_FCNTL
2117#if defined(OS2) && defined(__EMX__)
760ac839 2118 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2119#else
760ac839 2120 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2121#endif
55497cff 2122#else
cea2e8a9 2123 DIE(aTHX_ "fcntl is not implemented");
a0d0e21e
LW		 2124#endif
2125
748a9306
LW		 2126 if (SvPOK(argsv)) {
2127 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2128 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
22c35a8c 2129 PL_op_name[optype]);
748a9306
LW		 2130 s[SvCUR(argsv)] = 0; /* put our null back */
2131 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2132 }
2133
2134 if (retval == -1)
2135 RETPUSHUNDEF;
2136 if (retval != 0) {
2137 PUSHi(retval);
2138 }
2139 else {
8903cb82 2140 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e
LW		 2141 }
2142 RETURN;
2143}
2144
2145PP(pp_flock)
2146{
39644a26 2147 dSP; dTARGET;
a0d0e21e
LW		 2148 I32 value;
2149 int argtype;
2150 GV *gv;
bc37a18f 2151 IO *io = NULL;
760ac839 2152 PerlIO *fp;
16d20bd9 2153
ff68c719 2154#ifdef FLOCK
a0d0e21e 2155 argtype = POPi;
32da55ab 2156 if (MAXARG == 0)
3280af22 2157 gv = PL_last_in_gv;
a0d0e21e
LW		 2158 else
2159 gv = (GV*)POPs;
bc37a18f
RG		 2160 if (gv && (io = GvIO(gv)))
2161 fp = IoIFP(io);
2162 else {
a0d0e21e 2163 fp = Nullfp;
bc37a18f
RG		 2164 io = NULL;
2165 }
a0d0e21e 2166 if (fp) {
68dc0745 2167 (void)PerlIO_flush(fp);
76e3520e 2168 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2169 }
cb50131a 2170 else {
bc37a18f
RG		 2171 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2172 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2173 value = 0;
cb50131a 2174 SETERRNO(EBADF,RMS$_IFI);
cb50131a 2175 }
a0d0e21e
LW		 2176 PUSHi(value);
2177 RETURN;
2178#else
cea2e8a9 2179 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2180#endif
2181}
2182
2183/* Sockets. */
2184
2185PP(pp_socket)
2186{
39644a26 2187 dSP;
a0d0e21e
LW		 2188#ifdef HAS_SOCKET
2189 GV *gv;
2190 register IO *io;
2191 int protocol = POPi;
2192 int type = POPi;
2193 int domain = POPi;
2194 int fd;
2195
2196 gv = (GV*)POPs;
c289d2f7 2197 io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2198
c289d2f7
JH		 2199 if (!gv || !io) {
2200 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2201 report_evil_fh(gv, io, PL_op->op_type);
2202 if (IoIFP(io))
2203 do_close(gv, FALSE);
748a9306 2204 SETERRNO(EBADF,LIB$_INVARG);
a0d0e21e
LW		 2205 RETPUSHUNDEF;
2206 }
2207
a0d0e21e 2208 TAINT_PROPER("socket");
6ad3d225 2209 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2210 if (fd < 0)
2211 RETPUSHUNDEF;
760ac839
LW		 2212 IoIFP(io) = PerlIO_fdopen(fd, "r"); /* stdio gets confused about sockets */
2213 IoOFP(io) = PerlIO_fdopen(fd, "w");
50952442 2214 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2215 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2216 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2217 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2218 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2219 RETPUSHUNDEF;
2220 }
8d2a6795
GS		 2221#if defined(HAS_FCNTL) && defined(F_SETFD)
2222 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2223#endif
a0d0e21e 2224
d5ff79b3
OF		 2225#ifdef EPOC
2226 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2227#endif
2228
a0d0e21e
LW		 2229 RETPUSHYES;
2230#else
cea2e8a9 2231 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2232#endif
2233}
2234
2235PP(pp_sockpair)
2236{
39644a26 2237 dSP;
a0d0e21e
LW		 2238#ifdef HAS_SOCKETPAIR
2239 GV *gv1;
2240 GV *gv2;
2241 register IO *io1;
2242 register IO *io2;
2243 int protocol = POPi;
2244 int type = POPi;
2245 int domain = POPi;
2246 int fd[2];
2247
2248 gv2 = (GV*)POPs;
2249 gv1 = (GV*)POPs;
c289d2f7
JH		 2250 io1 = gv1 ? GvIOn(gv1) : NULL;
2251 io2 = gv2 ? GvIOn(gv2) : NULL;
2252 if (!gv1 || !gv2 || !io1 || !io2) {
2253 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2254 if (!gv1 || !io1)
2255 report_evil_fh(gv1, io1, PL_op->op_type);
2256 if (!gv2 || !io2)
2257 report_evil_fh(gv1, io2, PL_op->op_type);
2258 }
2259 if (IoIFP(io1))
2260 do_close(gv1, FALSE);
2261 if (IoIFP(io2))
2262 do_close(gv2, FALSE);
a0d0e21e 2263 RETPUSHUNDEF;
c289d2f7 2264 }
a0d0e21e
LW		 2265
2266 TAINT_PROPER("socketpair");
6ad3d225 2267 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2268 RETPUSHUNDEF;
760ac839
LW		 2269 IoIFP(io1) = PerlIO_fdopen(fd[0], "r");
2270 IoOFP(io1) = PerlIO_fdopen(fd[0], "w");
50952442 2271 IoTYPE(io1) = IoTYPE_SOCKET;
760ac839
LW		 2272 IoIFP(io2) = PerlIO_fdopen(fd[1], "r");
2273 IoOFP(io2) = PerlIO_fdopen(fd[1], "w");
50952442 2274 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2275 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2276 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2277 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2278 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2279 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2280 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2281 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2282 RETPUSHUNDEF;
2283 }
8d2a6795
GS		 2284#if defined(HAS_FCNTL) && defined(F_SETFD)
2285 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2286 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2287#endif
a0d0e21e
LW		 2288
2289 RETPUSHYES;
2290#else
cea2e8a9 2291 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2292#endif
2293}
2294
2295PP(pp_bind)
2296{
39644a26 2297 dSP;
a0d0e21e 2298#ifdef HAS_SOCKET
eec2d3df
GS		 2299#ifdef MPE /* Requires PRIV mode to bind() to ports < 1024 */
2300 extern GETPRIVMODE();
2301 extern GETUSERMODE();
2302#endif
748a9306 2303 SV *addrsv = POPs;
a0d0e21e
LW		 2304 char *addr;
2305 GV *gv = (GV*)POPs;
2306 register IO *io = GvIOn(gv);
2307 STRLEN len;
eec2d3df
GS		 2308 int bind_ok = 0;
2309#ifdef MPE
2310 int mpeprivmode = 0;
2311#endif
a0d0e21e
LW		 2312
2313 if (!io || !IoIFP(io))
2314 goto nuts;
2315
748a9306 2316 addr = SvPV(addrsv, len);
a0d0e21e 2317 TAINT_PROPER("bind");
eec2d3df
GS		 2318#ifdef MPE /* Deal with MPE bind() peculiarities */
2319 if (((struct sockaddr *)addr)->sa_family == AF_INET) {
2320 /* The address *MUST* stupidly be zero. */
2321 ((struct sockaddr_in *)addr)->sin_addr.s_addr = INADDR_ANY;
2322 /* PRIV mode is required to bind() to ports < 1024. */
2323 if (((struct sockaddr_in *)addr)->sin_port < 1024 &&
2324 ((struct sockaddr_in *)addr)->sin_port > 0) {
2325 GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
2326 mpeprivmode = 1;
2327 }
2328 }
2329#endif /* MPE */
2330 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2331 (struct sockaddr *)addr, len) >= 0)
2332 bind_ok = 1;
2333
2334#ifdef MPE /* Switch back to USER mode */
2335 if (mpeprivmode)
2336 GETUSERMODE();
2337#endif /* MPE */
2338
2339 if (bind_ok)
a0d0e21e
LW		 2340 RETPUSHYES;
2341 else
2342 RETPUSHUNDEF;
2343
2344nuts:
599cee73 2345 if (ckWARN(WARN_CLOSED))
bc37a18f 2346 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2347 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2348 RETPUSHUNDEF;
2349#else
cea2e8a9 2350 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2351#endif
2352}
2353
2354PP(pp_connect)
2355{
39644a26 2356 dSP;
a0d0e21e 2357#ifdef HAS_SOCKET
748a9306 2358 SV *addrsv = POPs;
a0d0e21e
LW		 2359 char *addr;
2360 GV *gv = (GV*)POPs;
2361 register IO *io = GvIOn(gv);
2362 STRLEN len;
2363
2364 if (!io || !IoIFP(io))
2365 goto nuts;
2366
748a9306 2367 addr = SvPV(addrsv, len);
a0d0e21e 2368 TAINT_PROPER("connect");
6ad3d225 2369 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2370 RETPUSHYES;
2371 else
2372 RETPUSHUNDEF;
2373
2374nuts:
599cee73 2375 if (ckWARN(WARN_CLOSED))
bc37a18f 2376 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2377 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2378 RETPUSHUNDEF;
2379#else
cea2e8a9 2380 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2381#endif
2382}
2383
2384PP(pp_listen)
2385{
39644a26 2386 dSP;
a0d0e21e
LW		 2387#ifdef HAS_SOCKET
2388 int backlog = POPi;
2389 GV *gv = (GV*)POPs;
c289d2f7 2390 register IO *io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2391
c289d2f7 2392 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2393 goto nuts;
2394
6ad3d225 2395 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2396 RETPUSHYES;
2397 else
2398 RETPUSHUNDEF;
2399
2400nuts:
599cee73 2401 if (ckWARN(WARN_CLOSED))
bc37a18f 2402 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2403 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2404 RETPUSHUNDEF;
2405#else
cea2e8a9 2406 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2407#endif
2408}
2409
2410PP(pp_accept)
2411{
39644a26 2412 dSP; dTARGET;
a0d0e21e
LW		 2413#ifdef HAS_SOCKET
2414 GV *ngv;
2415 GV *ggv;
2416 register IO *nstio;
2417 register IO *gstio;
4633a7c4 2418 struct sockaddr saddr; /* use a struct to avoid alignment problems */
1e422769 2419 Sock_size_t len = sizeof saddr;
a0d0e21e
LW		 2420 int fd;
2421
2422 ggv = (GV*)POPs;
2423 ngv = (GV*)POPs;
2424
2425 if (!ngv)
2426 goto badexit;
2427 if (!ggv)
2428 goto nuts;
2429
2430 gstio = GvIO(ggv);
2431 if (!gstio || !IoIFP(gstio))
2432 goto nuts;
2433
2434 nstio = GvIOn(ngv);
2435 if (IoIFP(nstio))
2436 do_close(ngv, FALSE);
2437
6ad3d225 2438 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *)&saddr, &len);
a0d0e21e
LW		 2439 if (fd < 0)
2440 goto badexit;
760ac839
LW		 2441 IoIFP(nstio) = PerlIO_fdopen(fd, "r");
2442 IoOFP(nstio) = PerlIO_fdopen(fd, "w");
50952442 2443 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2444 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2445 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2446 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2447 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2448 goto badexit;
2449 }
8d2a6795
GS		 2450#if defined(HAS_FCNTL) && defined(F_SETFD)
2451 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2452#endif
a0d0e21e 2453
ed79a026 2454#ifdef EPOC
a9f1f6b0
OF		 2455 len = sizeof saddr; /* EPOC somehow truncates info */
2456 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026
OF		 2457#endif
2458
d3b9c689
RG		 2459#if defined(I_SYS_UN) && defined(__linux__)
2460 /* see the comment in pp_sysread */
2461 if (saddr.sa_family == AF_UNIX)
2462 len = sizeof(struct sockaddr_un);
2463#endif
2464
748a9306 2465 PUSHp((char *)&saddr, len);
a0d0e21e
LW		 2466 RETURN;
2467
2468nuts:
599cee73 2469 if (ckWARN(WARN_CLOSED))
bc37a18f 2470 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
748a9306 2471 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2472
2473badexit:
2474 RETPUSHUNDEF;
2475
2476#else
cea2e8a9 2477 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2478#endif
2479}
2480
2481PP(pp_shutdown)
2482{
39644a26 2483 dSP; dTARGET;
a0d0e21e
LW		 2484#ifdef HAS_SOCKET
2485 int how = POPi;
2486 GV *gv = (GV*)POPs;
2487 register IO *io = GvIOn(gv);
2488
2489 if (!io || !IoIFP(io))
2490 goto nuts;
2491
6ad3d225 2492 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2493 RETURN;
2494
2495nuts:
599cee73 2496 if (ckWARN(WARN_CLOSED))
bc37a18f 2497 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2498 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2499 RETPUSHUNDEF;
2500#else
cea2e8a9 2501 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2502#endif
2503}
2504
2505PP(pp_gsockopt)
2506{
2507#ifdef HAS_SOCKET
cea2e8a9 2508 return pp_ssockopt();
a0d0e21e 2509#else
cea2e8a9 2510 DIE(aTHX_ PL_no_sock_func, "getsockopt");
a0d0e21e
LW		 2511#endif
2512}
2513
2514PP(pp_ssockopt)
2515{
39644a26 2516 dSP;
a0d0e21e 2517#ifdef HAS_SOCKET
533c011a 2518 int optype = PL_op->op_type;
a0d0e21e
LW		 2519 SV *sv;
2520 int fd;
2521 unsigned int optname;
2522 unsigned int lvl;
2523 GV *gv;
2524 register IO *io;
1e422769 2525 Sock_size_t len;
a0d0e21e
LW		 2526
2527 if (optype == OP_GSOCKOPT)
2528 sv = sv_2mortal(NEWSV(22, 257));
2529 else
2530 sv = POPs;
2531 optname = (unsigned int) POPi;
2532 lvl = (unsigned int) POPi;
2533
2534 gv = (GV*)POPs;
2535 io = GvIOn(gv);
2536 if (!io || !IoIFP(io))
2537 goto nuts;
2538
760ac839 2539 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2540 switch (optype) {
2541 case OP_GSOCKOPT:
748a9306 2542 SvGROW(sv, 257);
a0d0e21e 2543 (void)SvPOK_only(sv);
748a9306
LW		 2544 SvCUR_set(sv,256);
2545 *SvEND(sv) ='\0';
1e422769 2546 len = SvCUR(sv);
6ad3d225 2547 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2548 goto nuts2;
1e422769 2549 SvCUR_set(sv, len);
748a9306 2550 *SvEND(sv) ='\0';
a0d0e21e
LW		 2551 PUSHs(sv);
2552 break;
2553 case OP_SSOCKOPT: {
1e422769 2554 char *buf;
2555 int aint;
2556 if (SvPOKp(sv)) {
2d8e6c8d
GS		 2557 STRLEN l;
2558 buf = SvPV(sv, l);
2559 len = l;
1e422769 2560 }
56ee1660 2561 else {
a0d0e21e
LW		 2562 aint = (int)SvIV(sv);
2563 buf = (char*)&aint;
2564 len = sizeof(int);
2565 }
6ad3d225 2566 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2567 goto nuts2;
3280af22 2568 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2569 }
2570 break;
2571 }
2572 RETURN;
2573
2574nuts:
599cee73 2575 if (ckWARN(WARN_CLOSED))
bc37a18f 2576 report_evil_fh(gv, io, optype);
748a9306 2577 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2578nuts2:
2579 RETPUSHUNDEF;
2580
2581#else
cea2e8a9 2582 DIE(aTHX_ PL_no_sock_func, "setsockopt");
a0d0e21e
LW		 2583#endif
2584}
2585
2586PP(pp_getsockname)
2587{
2588#ifdef HAS_SOCKET
cea2e8a9 2589 return pp_getpeername();
a0d0e21e 2590#else
cea2e8a9 2591 DIE(aTHX_ PL_no_sock_func, "getsockname");
a0d0e21e
LW		 2592#endif
2593}
2594
2595PP(pp_getpeername)
2596{
39644a26 2597 dSP;
a0d0e21e 2598#ifdef HAS_SOCKET
533c011a 2599 int optype = PL_op->op_type;
a0d0e21e
LW		 2600 SV *sv;
2601 int fd;
2602 GV *gv = (GV*)POPs;
2603 register IO *io = GvIOn(gv);
1e422769 2604 Sock_size_t len;
a0d0e21e
LW		 2605
2606 if (!io || !IoIFP(io))
2607 goto nuts;
2608
2609 sv = sv_2mortal(NEWSV(22, 257));
748a9306 2610 (void)SvPOK_only(sv);
1e422769 2611 len = 256;
2612 SvCUR_set(sv, len);
748a9306 2613 *SvEND(sv) ='\0';
760ac839 2614 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2615 switch (optype) {
2616 case OP_GETSOCKNAME:
6ad3d225 2617 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2618 goto nuts2;
2619 break;
2620 case OP_GETPEERNAME:
6ad3d225 2621 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2622 goto nuts2;
490ab354
JH		 2623#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2624 {
2625 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";
2626 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2627 if (((struct sockaddr *)SvPVX(sv))->sa_family == AF_INET &&
2628 !memcmp((char *)SvPVX(sv) + sizeof(u_short), nowhere,
2629 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2630 goto nuts2;
490ab354
JH		 2631 }
2632 }
2633#endif
a0d0e21e
LW		 2634 break;
2635 }
13826f2c
CS		 2636#ifdef BOGUS_GETNAME_RETURN
2637 /* Interactive Unix, getpeername() and getsockname()
2638 does not return valid namelen */
1e422769 2639 if (len == BOGUS_GETNAME_RETURN)
2640 len = sizeof(struct sockaddr);
13826f2c 2641#endif
d3b9c689
RG		 2642#if defined(I_SYS_UN) && defined(__linux__)
2643 /* see the comment in pp_sysread */
2644 if (((struct sockaddr *)SvPVX(sv))->sa_family == AF_UNIX)
2645 len = sizeof(struct sockaddr_un);
2646#endif
1e422769 2647 SvCUR_set(sv, len);
748a9306 2648 *SvEND(sv) ='\0';
a0d0e21e
LW		 2649 PUSHs(sv);
2650 RETURN;
2651
2652nuts:
599cee73 2653 if (ckWARN(WARN_CLOSED))
bc37a18f 2654 report_evil_fh(gv, io, optype);
748a9306 2655 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2656nuts2:
2657 RETPUSHUNDEF;
2658
2659#else
cea2e8a9 2660 DIE(aTHX_ PL_no_sock_func, "getpeername");
a0d0e21e
LW		 2661#endif
2662}
2663
2664/* Stat calls. */
2665
2666PP(pp_lstat)
2667{
cea2e8a9 2668 return pp_stat();
a0d0e21e
LW		 2669}
2670
2671PP(pp_stat)
2672{
39644a26 2673 dSP;
2dd78f96 2674 GV *gv;
54310121 2675 I32 gimme;
a0d0e21e 2676 I32 max = 13;
2d8e6c8d 2677 STRLEN n_a;
a0d0e21e 2678
533c011a 2679 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2680 gv = cGVOP_gv;
8a4e5b40
DD		 2681 if (PL_op->op_type == OP_LSTAT) {
2682 if (PL_laststype != OP_LSTAT)
2683 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2684 if (ckWARN(WARN_IO) && gv != PL_defgv)
2685 Perl_warner(aTHX_ WARN_IO,
2dd78f96 2686 "lstat() on filehandle %s", GvENAME(gv));
8a4e5b40
DD		 2687 /* Perl_my_lstat (-l) croak's on filehandle, why warn here? */
2688 }
2689
748a9306 2690 do_fstat:
2dd78f96 2691 if (gv != PL_defgv) {
3280af22 2692 PL_laststype = OP_STAT;
2dd78f96 2693 PL_statgv = gv;
3280af22 2694 sv_setpv(PL_statname, "");
2dd78f96
JH		 2695 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2696 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
a0d0e21e 2697 }
9ddeeac9 2698 if (PL_laststatval < 0) {
2dd78f96
JH		 2699 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2700 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2701 max = 0;
9ddeeac9 2702 }
a0d0e21e
LW		 2703 }
2704 else {
748a9306
LW		 2705 SV* sv = POPs;
2706 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2707 gv = (GV*)sv;
748a9306
LW		 2708 goto do_fstat;
2709 }
2710 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 2711 gv = (GV*)SvRV(sv);
748a9306
LW		 2712 goto do_fstat;
2713 }
2d8e6c8d 2714 sv_setpv(PL_statname, SvPV(sv,n_a));
3280af22 2715 PL_statgv = Nullgv;
a0d0e21e 2716#ifdef HAS_LSTAT
533c011a
NIS		 2717 PL_laststype = PL_op->op_type;
2718 if (PL_op->op_type == OP_LSTAT)
2d8e6c8d 2719 PL_laststatval = PerlLIO_lstat(SvPV(PL_statname, n_a), &PL_statcache);
a0d0e21e
LW		 2720 else
2721#endif
2d8e6c8d 2722 PL_laststatval = PerlLIO_stat(SvPV(PL_statname, n_a), &PL_statcache);
3280af22 2723 if (PL_laststatval < 0) {
2d8e6c8d 2724 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(PL_statname, n_a), '\n'))
cea2e8a9 2725 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
a0d0e21e
LW		 2726 max = 0;
2727 }
2728 }
2729
54310121 2730 gimme = GIMME_V;
2731 if (gimme != G_ARRAY) {
2732 if (gimme != G_VOID)
2733 XPUSHs(boolSV(max));
2734 RETURN;
a0d0e21e
LW		 2735 }
2736 if (max) {
36477c24 2737 EXTEND(SP, max);
2738 EXTEND_MORTAL(max);
1ff81528
PL		 2739 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2740 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2741 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2742 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2743#if Uid_t_size > IVSIZE
2744 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2745#else
23dcd6c8 2746# if Uid_t_sign <= 0
1ff81528 2747 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2748# else
2749 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2750# endif
146174a9 2751#endif
301e8125 2752#if Gid_t_size > IVSIZE
146174a9
CB		 2753 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2754#else
23dcd6c8 2755# if Gid_t_sign <= 0
1ff81528 2756 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2757# else
2758 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2759# endif
146174a9 2760#endif
cbdc8872 2761#ifdef USE_STAT_RDEV
1ff81528 2762 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2763#else
79cb57f6 2764 PUSHs(sv_2mortal(newSVpvn("", 0)));
cbdc8872 2765#endif
146174a9
CB		 2766#if Off_t_size > IVSIZE
2767 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_size)));
2768#else
1ff81528 2769 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2770#endif
cbdc8872 2771#ifdef BIG_TIME
172ae379
JH		 2772 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2773 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2774 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2775#else
1ff81528
PL		 2776 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2777 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2778 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
cbdc8872 2779#endif
a0d0e21e 2780#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2781 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2782 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2783#else
79cb57f6
GS		 2784 PUSHs(sv_2mortal(newSVpvn("", 0)));
2785 PUSHs(sv_2mortal(newSVpvn("", 0)));
a0d0e21e
LW		 2786#endif
2787 }
2788 RETURN;
2789}
2790
2791PP(pp_ftrread)
2792{
5ff3f7a4 2793 I32 result;
39644a26 2794 dSP;
5ff3f7a4 2795#if defined(HAS_ACCESS) && defined(R_OK)
2d8e6c8d 2796 STRLEN n_a;
5ff3f7a4 2797 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2798 result = access(TOPpx, R_OK);
5ff3f7a4
GS		 2799 if (result == 0)
2800 RETPUSHYES;
2801 if (result < 0)
2802 RETPUSHUNDEF;
2803 RETPUSHNO;
22865c03
GS		 2804 }
2805 else
cea2e8a9 2806 result = my_stat();
5ff3f7a4 2807#else
cea2e8a9 2808 result = my_stat();
5ff3f7a4 2809#endif
22865c03 2810 SPAGAIN;
a0d0e21e
LW		 2811 if (result < 0)
2812 RETPUSHUNDEF;
3280af22 2813 if (cando(S_IRUSR, 0, &PL_statcache))
a0d0e21e
LW		 2814 RETPUSHYES;
2815 RETPUSHNO;
2816}
2817
2818PP(pp_ftrwrite)
2819{
5ff3f7a4 2820 I32 result;
39644a26 2821 dSP;
5ff3f7a4 2822#if defined(HAS_ACCESS) && defined(W_OK)
2d8e6c8d 2823 STRLEN n_a;
5ff3f7a4 2824 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2825 result = access(TOPpx, W_OK);
5ff3f7a4
GS		 2826 if (result == 0)
2827 RETPUSHYES;
2828 if (result < 0)
2829 RETPUSHUNDEF;
2830 RETPUSHNO;
22865c03
GS		 2831 }
2832 else
cea2e8a9 2833 result = my_stat();
5ff3f7a4 2834#else
cea2e8a9 2835 result = my_stat();
5ff3f7a4 2836#endif
22865c03 2837 SPAGAIN;
a0d0e21e
LW		 2838 if (result < 0)
2839 RETPUSHUNDEF;
3280af22 2840 if (cando(S_IWUSR, 0, &PL_statcache))
a0d0e21e
LW		 2841 RETPUSHYES;
2842 RETPUSHNO;
2843}
2844
2845PP(pp_ftrexec)
2846{
5ff3f7a4 2847 I32 result;
39644a26 2848 dSP;
5ff3f7a4 2849#if defined(HAS_ACCESS) && defined(X_OK)
2d8e6c8d 2850 STRLEN n_a;
5ff3f7a4 2851 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2852 result = access(TOPpx, X_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_IXUSR, 0, &PL_statcache))
a0d0e21e
LW		 2868 RETPUSHYES;
2869 RETPUSHNO;
2870}
2871
2872PP(pp_fteread)
2873{
5ff3f7a4 2874 I32 result;
39644a26 2875 dSP;
5ff3f7a4 2876#ifdef PERL_EFF_ACCESS_R_OK
2d8e6c8d 2877 STRLEN n_a;
5ff3f7a4 2878 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2879 result = PERL_EFF_ACCESS_R_OK(TOPpx);
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_IRUSR, 1, &PL_statcache))
a0d0e21e
LW		 2895 RETPUSHYES;
2896 RETPUSHNO;
2897}
2898
2899PP(pp_ftewrite)
2900{
5ff3f7a4 2901 I32 result;
39644a26 2902 dSP;
5ff3f7a4 2903#ifdef PERL_EFF_ACCESS_W_OK
2d8e6c8d 2904 STRLEN n_a;
5ff3f7a4 2905 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2906 result = PERL_EFF_ACCESS_W_OK(TOPpx);
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_IWUSR, 1, &PL_statcache))
a0d0e21e
LW		 2922 RETPUSHYES;
2923 RETPUSHNO;
2924}
2925
2926PP(pp_fteexec)
2927{
5ff3f7a4 2928 I32 result;
39644a26 2929 dSP;
5ff3f7a4 2930#ifdef PERL_EFF_ACCESS_X_OK
2d8e6c8d 2931 STRLEN n_a;
5ff3f7a4 2932 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2933 result = PERL_EFF_ACCESS_X_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_IXUSR, 1, &PL_statcache))
a0d0e21e
LW		 2949 RETPUSHYES;
2950 RETPUSHNO;
2951}
2952
2953PP(pp_ftis)
2954{
cea2e8a9 2955 I32 result = my_stat();
39644a26 2956 dSP;
a0d0e21e
LW		 2957 if (result < 0)
2958 RETPUSHUNDEF;
2959 RETPUSHYES;
2960}
2961
2962PP(pp_fteowned)
2963{
cea2e8a9 2964 return pp_ftrowned();
a0d0e21e
LW		 2965}
2966
2967PP(pp_ftrowned)
2968{
cea2e8a9 2969 I32 result = my_stat();
39644a26 2970 dSP;
a0d0e21e
LW		 2971 if (result < 0)
2972 RETPUSHUNDEF;
146174a9
CB		 2973 if (PL_statcache.st_uid == (PL_op->op_type == OP_FTEOWNED ?
2974 PL_euid : PL_uid) )
a0d0e21e
LW		 2975 RETPUSHYES;
2976 RETPUSHNO;
2977}
2978
2979PP(pp_ftzero)
2980{
cea2e8a9 2981 I32 result = my_stat();
39644a26 2982 dSP;
a0d0e21e
LW		 2983 if (result < 0)
2984 RETPUSHUNDEF;
146174a9 2985 if (PL_statcache.st_size == 0)
a0d0e21e
LW		 2986 RETPUSHYES;
2987 RETPUSHNO;
2988}
2989
2990PP(pp_ftsize)
2991{
cea2e8a9 2992 I32 result = my_stat();
39644a26 2993 dSP; dTARGET;
a0d0e21e
LW		 2994 if (result < 0)
2995 RETPUSHUNDEF;
146174a9
CB		 2996#if Off_t_size > IVSIZE
2997 PUSHn(PL_statcache.st_size);
2998#else
3280af22 2999 PUSHi(PL_statcache.st_size);
146174a9 3000#endif
a0d0e21e
LW		 3001 RETURN;
3002}
3003
3004PP(pp_ftmtime)
3005{
cea2e8a9 3006 I32 result = my_stat();
39644a26 3007 dSP; dTARGET;
a0d0e21e
LW		 3008 if (result < 0)
3009 RETPUSHUNDEF;
c6419e06 3010 PUSHn( (PL_basetime - PL_statcache.st_mtime) / 86400.0 );
a0d0e21e
LW		 3011 RETURN;
3012}
3013
3014PP(pp_ftatime)
3015{
cea2e8a9 3016 I32 result = my_stat();
39644a26 3017 dSP; dTARGET;
a0d0e21e
LW		 3018 if (result < 0)
3019 RETPUSHUNDEF;
c6419e06 3020 PUSHn( (PL_basetime - PL_statcache.st_atime) / 86400.0 );
a0d0e21e
LW		 3021 RETURN;
3022}
3023
3024PP(pp_ftctime)
3025{
cea2e8a9 3026 I32 result = my_stat();
39644a26 3027 dSP; dTARGET;
a0d0e21e
LW		 3028 if (result < 0)
3029 RETPUSHUNDEF;
c6419e06 3030 PUSHn( (PL_basetime - PL_statcache.st_ctime) / 86400.0 );
a0d0e21e
LW		 3031 RETURN;
3032}
3033
3034PP(pp_ftsock)
3035{
cea2e8a9 3036 I32 result = my_stat();
39644a26 3037 dSP;
a0d0e21e
LW		 3038 if (result < 0)
3039 RETPUSHUNDEF;
3280af22 3040 if (S_ISSOCK(PL_statcache.st_mode))
a0d0e21e
LW		 3041 RETPUSHYES;
3042 RETPUSHNO;
3043}
3044
3045PP(pp_ftchr)
3046{
cea2e8a9 3047 I32 result = my_stat();
39644a26 3048 dSP;
a0d0e21e
LW		 3049 if (result < 0)
3050 RETPUSHUNDEF;
3280af22 3051 if (S_ISCHR(PL_statcache.st_mode))
a0d0e21e
LW		 3052 RETPUSHYES;
3053 RETPUSHNO;
3054}
3055
3056PP(pp_ftblk)
3057{
cea2e8a9 3058 I32 result = my_stat();
39644a26 3059 dSP;
a0d0e21e
LW		 3060 if (result < 0)
3061 RETPUSHUNDEF;
3280af22 3062 if (S_ISBLK(PL_statcache.st_mode))
a0d0e21e
LW		 3063 RETPUSHYES;
3064 RETPUSHNO;
3065}
3066
3067PP(pp_ftfile)
3068{
cea2e8a9 3069 I32 result = my_stat();
39644a26 3070 dSP;
a0d0e21e
LW		 3071 if (result < 0)
3072 RETPUSHUNDEF;
3280af22 3073 if (S_ISREG(PL_statcache.st_mode))
a0d0e21e
LW		 3074 RETPUSHYES;
3075 RETPUSHNO;
3076}
3077
3078PP(pp_ftdir)
3079{
cea2e8a9 3080 I32 result = my_stat();
39644a26 3081 dSP;
a0d0e21e
LW		 3082 if (result < 0)
3083 RETPUSHUNDEF;
3280af22 3084 if (S_ISDIR(PL_statcache.st_mode))
a0d0e21e
LW		 3085 RETPUSHYES;
3086 RETPUSHNO;
3087}
3088
3089PP(pp_ftpipe)
3090{
cea2e8a9 3091 I32 result = my_stat();
39644a26 3092 dSP;
a0d0e21e
LW		 3093 if (result < 0)
3094 RETPUSHUNDEF;
3280af22 3095 if (S_ISFIFO(PL_statcache.st_mode))
a0d0e21e
LW		 3096 RETPUSHYES;
3097 RETPUSHNO;
3098}
3099
3100PP(pp_ftlink)
3101{
cea2e8a9 3102 I32 result = my_lstat();
39644a26 3103 dSP;
a0d0e21e
LW		 3104 if (result < 0)
3105 RETPUSHUNDEF;
3280af22 3106 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e
LW		 3107 RETPUSHYES;
3108 RETPUSHNO;
3109}
3110
3111PP(pp_ftsuid)
3112{
39644a26 3113 dSP;
a0d0e21e 3114#ifdef S_ISUID
cea2e8a9 3115 I32 result = my_stat();
a0d0e21e
LW		 3116 SPAGAIN;
3117 if (result < 0)
3118 RETPUSHUNDEF;
3280af22 3119 if (PL_statcache.st_mode & S_ISUID)
a0d0e21e
LW		 3120 RETPUSHYES;
3121#endif
3122 RETPUSHNO;
3123}
3124
3125PP(pp_ftsgid)
3126{
39644a26 3127 dSP;
a0d0e21e 3128#ifdef S_ISGID
cea2e8a9 3129 I32 result = my_stat();
a0d0e21e
LW		 3130 SPAGAIN;
3131 if (result < 0)
3132 RETPUSHUNDEF;
3280af22 3133 if (PL_statcache.st_mode & S_ISGID)
a0d0e21e
LW		 3134 RETPUSHYES;
3135#endif
3136 RETPUSHNO;
3137}
3138
3139PP(pp_ftsvtx)
3140{
39644a26 3141 dSP;
a0d0e21e 3142#ifdef S_ISVTX
cea2e8a9 3143 I32 result = my_stat();
a0d0e21e
LW		 3144 SPAGAIN;
3145 if (result < 0)
3146 RETPUSHUNDEF;
3280af22 3147 if (PL_statcache.st_mode & S_ISVTX)
a0d0e21e
LW		 3148 RETPUSHYES;
3149#endif
3150 RETPUSHNO;
3151}
3152
3153PP(pp_fttty)
3154{
39644a26 3155 dSP;
a0d0e21e
LW		 3156 int fd;
3157 GV *gv;
fb73857a 3158 char *tmps = Nullch;
2d8e6c8d 3159 STRLEN n_a;
fb73857a 3160
533c011a 3161 if (PL_op->op_flags & OPf_REF)
146174a9 3162 gv = cGVOP_gv;
fb73857a 3163 else if (isGV(TOPs))
3164 gv = (GV*)POPs;
3165 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3166 gv = (GV*)SvRV(POPs);
a0d0e21e 3167 else
2d8e6c8d 3168 gv = gv_fetchpv(tmps = POPpx, FALSE, SVt_PVIO);
fb73857a 3169
a0d0e21e 3170 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3171 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
fb73857a 3172 else if (tmps && isDIGIT(*tmps))
a0d0e21e
LW		 3173 fd = atoi(tmps);
3174 else
3175 RETPUSHUNDEF;
6ad3d225 3176 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3177 RETPUSHYES;
3178 RETPUSHNO;
3179}
3180
16d20bd9
AD		 3181#if defined(atarist) /* this will work with atariST. Configure will
3182 make guesses for other systems. */
3183# define FILE_base(f) ((f)->_base)
3184# define FILE_ptr(f) ((f)->_ptr)
3185# define FILE_cnt(f) ((f)->_cnt)
3186# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3187#endif
3188
3189PP(pp_fttext)
3190{
39644a26 3191 dSP;
a0d0e21e
LW		 3192 I32 i;
3193 I32 len;
3194 I32 odd = 0;
3195 STDCHAR tbuf[512];
3196 register STDCHAR *s;
3197 register IO *io;
5f05dabc 3198 register SV *sv;
3199 GV *gv;
2d8e6c8d 3200 STRLEN n_a;
146174a9 3201 PerlIO *fp;
a0d0e21e 3202
533c011a 3203 if (PL_op->op_flags & OPf_REF)
146174a9 3204 gv = cGVOP_gv;
5f05dabc 3205 else if (isGV(TOPs))
3206 gv = (GV*)POPs;
3207 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3208 gv = (GV*)SvRV(POPs);
3209 else
3210 gv = Nullgv;
3211
3212 if (gv) {
a0d0e21e 3213 EXTEND(SP, 1);
3280af22
NIS		 3214 if (gv == PL_defgv) {
3215 if (PL_statgv)
3216 io = GvIO(PL_statgv);
a0d0e21e 3217 else {
3280af22 3218 sv = PL_statname;
a0d0e21e
LW		 3219 goto really_filename;
3220 }
3221 }
3222 else {
3280af22
NIS		 3223 PL_statgv = gv;
3224 PL_laststatval = -1;
3225 sv_setpv(PL_statname, "");
3226 io = GvIO(PL_statgv);
a0d0e21e
LW		 3227 }
3228 if (io && IoIFP(io)) {
5f05dabc 3229 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3230 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3231 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3232 if (PL_laststatval < 0)
5f05dabc 3233 RETPUSHUNDEF;
9cbac4c7 3234 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3235 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3236 RETPUSHNO;
3237 else
3238 RETPUSHYES;
9cbac4c7 3239 }
a20bf0c3 3240 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3241 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3242 if (i != EOF)
760ac839 3243 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3244 }
a20bf0c3 3245 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3246 RETPUSHYES;
a20bf0c3
JH		 3247 len = PerlIO_get_bufsiz(IoIFP(io));
3248 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3249 /* sfio can have large buffers - limit to 512 */
3250 if (len > 512)
3251 len = 512;
a0d0e21e
LW		 3252 }
3253 else {
2dd78f96 3254 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3255 gv = cGVOP_gv;
2dd78f96 3256 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3257 }
748a9306 3258 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 3259 RETPUSHUNDEF;
3260 }
3261 }
3262 else {
3263 sv = POPs;
5f05dabc 3264 really_filename:
3280af22
NIS		 3265 PL_statgv = Nullgv;
3266 PL_laststatval = -1;
2d8e6c8d 3267 sv_setpv(PL_statname, SvPV(sv, n_a));
146174a9 3268 if (!(fp = PerlIO_open(SvPVX(PL_statname), "r"))) {
2d8e6c8d 3269 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
cea2e8a9 3270 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
a0d0e21e
LW		 3271 RETPUSHUNDEF;
3272 }
146174a9
CB		 3273 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3274 if (PL_laststatval < 0) {
3275 (void)PerlIO_close(fp);
5f05dabc 3276 RETPUSHUNDEF;
146174a9 3277 }
60382766 3278 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
146174a9
CB		 3279 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3280 (void)PerlIO_close(fp);
a0d0e21e 3281 if (len <= 0) {
533c011a 3282 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3283 RETPUSHNO; /* special case NFS directories */
3284 RETPUSHYES; /* null file is anything */
3285 }
3286 s = tbuf;
3287 }
3288
3289 /* now scan s to look for textiness */
4633a7c4 3290 /* XXX ASCII dependent code */
a0d0e21e 3291
146174a9
CB		 3292#if defined(DOSISH) || defined(USEMYBINMODE)
3293 /* ignore trailing ^Z on short files */
3294 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3295 --len;
3296#endif
3297
a0d0e21e
LW		 3298 for (i = 0; i < len; i++, s++) {
3299 if (!*s) { /* null never allowed in text */
3300 odd += len;
3301 break;
3302 }
9d116dd7 3303#ifdef EBCDIC
301e8125 3304 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3305 odd++;
3306#else
146174a9
CB		 3307 else if (*s & 128) {
3308#ifdef USE_LOCALE
b3f66c68
GS		 3309 if ((PL_op->op_private & OPpLOCALE) && isALPHA_LC(*s))
3310 continue;
3311#endif
3312 /* utf8 characters don't count as odd */
fd400ab9 3313 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3314 int ulen = UTF8SKIP(s);
3315 if (ulen < len - i) {
3316 int j;
3317 for (j = 1; j < ulen; j++) {
fd400ab9 3318 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3319 goto not_utf8;
3320 }
3321 --ulen; /* loop does extra increment */
3322 s += ulen;
3323 i += ulen;
3324 continue;
3325 }
3326 }
3327 not_utf8:
3328 odd++;
146174a9 3329 }
a0d0e21e
LW		 3330 else if (*s < 32 &&
3331 *s != '\n' && *s != '\r' && *s != '\b' &&
3332 *s != '\t' && *s != '\f' && *s != 27)
3333 odd++;
9d116dd7 3334#endif
a0d0e21e
LW		 3335 }
3336
533c011a 3337 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3338 RETPUSHNO;
3339 else
3340 RETPUSHYES;
3341}
3342
3343PP(pp_ftbinary)
3344{
cea2e8a9 3345 return pp_fttext();
a0d0e21e
LW		 3346}
3347
3348/* File calls. */
3349
3350PP(pp_chdir)
3351{
39644a26 3352 dSP; dTARGET;
a0d0e21e
LW		 3353 char *tmps;
3354 SV **svp;
2d8e6c8d 3355 STRLEN n_a;
a0d0e21e
LW		 3356
3357 if (MAXARG < 1)
3358 tmps = Nullch;
3359 else
2d8e6c8d 3360 tmps = POPpx;
a0d0e21e 3361 if (!tmps || !*tmps) {
3280af22 3362 svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE);
a0d0e21e 3363 if (svp)
2d8e6c8d 3364 tmps = SvPV(*svp, n_a);
a0d0e21e
LW		 3365 }
3366 if (!tmps || !*tmps) {
3280af22 3367 svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE);
a0d0e21e 3368 if (svp)
2d8e6c8d 3369 tmps = SvPV(*svp, n_a);
a0d0e21e 3370 }
491527d0
GS		 3371#ifdef VMS
3372 if (!tmps || !*tmps) {
6b88bc9c 3373 svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE);
491527d0 3374 if (svp)
2d8e6c8d 3375 tmps = SvPV(*svp, n_a);
491527d0
GS		 3376 }
3377#endif
a0d0e21e 3378 TAINT_PROPER("chdir");
6ad3d225 3379 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3380#ifdef VMS
3381 /* Clear the DEFAULT element of ENV so we'll get the new value
3382 * in the future. */
6b88bc9c 3383 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3384#endif
a0d0e21e
LW		 3385 RETURN;
3386}
3387
3388PP(pp_chown)
3389{
39644a26 3390 dSP; dMARK; dTARGET;
a0d0e21e
LW		 3391 I32 value;
3392#ifdef HAS_CHOWN
533c011a 3393 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3394 SP = MARK;
3395 PUSHi(value);
3396 RETURN;
3397#else
cea2e8a9 3398 DIE(aTHX_ PL_no_func, "Unsupported function chown");
a0d0e21e
LW		 3399#endif
3400}
3401
3402PP(pp_chroot)
3403{
39644a26 3404 dSP; dTARGET;
a0d0e21e
LW		 3405 char *tmps;
3406#ifdef HAS_CHROOT
2d8e6c8d
GS		 3407 STRLEN n_a;
3408 tmps = POPpx;
a0d0e21e
LW		 3409 TAINT_PROPER("chroot");
3410 PUSHi( chroot(tmps) >= 0 );
3411 RETURN;
3412#else
cea2e8a9 3413 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3414#endif
3415}
3416
3417PP(pp_unlink)
3418{
39644a26 3419 dSP; dMARK; dTARGET;
a0d0e21e 3420 I32 value;
533c011a 3421 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3422 SP = MARK;
3423 PUSHi(value);
3424 RETURN;
3425}
3426
3427PP(pp_chmod)
3428{
39644a26 3429 dSP; dMARK; dTARGET;
a0d0e21e 3430 I32 value;
533c011a 3431 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3432 SP = MARK;
3433 PUSHi(value);
3434 RETURN;
3435}
3436
3437PP(pp_utime)
3438{
39644a26 3439 dSP; dMARK; dTARGET;
a0d0e21e 3440 I32 value;
533c011a 3441 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3442 SP = MARK;
3443 PUSHi(value);
3444 RETURN;
3445}
3446
3447PP(pp_rename)
3448{
39644a26 3449 dSP; dTARGET;
a0d0e21e 3450 int anum;
2d8e6c8d 3451 STRLEN n_a;
a0d0e21e 3452
2d8e6c8d
GS		 3453 char *tmps2 = POPpx;
3454 char *tmps = SvPV(TOPs, n_a);
a0d0e21e
LW		 3455 TAINT_PROPER("rename");
3456#ifdef HAS_RENAME
baed7233 3457 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3458#else
6b88bc9c 3459 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
ed969818
W		 3460 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3461 anum = 1;
3462 else {
3654eb6c 3463 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
ed969818
W		 3464 (void)UNLINK(tmps2);
3465 if (!(anum = link(tmps, tmps2)))
3466 anum = UNLINK(tmps);
3467 }
a0d0e21e
LW		 3468 }
3469#endif
3470 SETi( anum >= 0 );
3471 RETURN;
3472}
3473
3474PP(pp_link)
3475{
39644a26 3476 dSP; dTARGET;
a0d0e21e 3477#ifdef HAS_LINK
2d8e6c8d
GS		 3478 STRLEN n_a;
3479 char *tmps2 = POPpx;
3480 char *tmps = SvPV(TOPs, n_a);
a0d0e21e 3481 TAINT_PROPER("link");
146174a9 3482 SETi( PerlLIO_link(tmps, tmps2) >= 0 );
a0d0e21e 3483#else
cea2e8a9 3484 DIE(aTHX_ PL_no_func, "Unsupported function link");
a0d0e21e
LW		 3485#endif
3486 RETURN;
3487}
3488
3489PP(pp_symlink)
3490{
39644a26 3491 dSP; dTARGET;
a0d0e21e 3492#ifdef HAS_SYMLINK
2d8e6c8d
GS		 3493 STRLEN n_a;
3494 char *tmps2 = POPpx;
3495 char *tmps = SvPV(TOPs, n_a);
a0d0e21e
LW		 3496 TAINT_PROPER("symlink");
3497 SETi( symlink(tmps, tmps2) >= 0 );
3498 RETURN;
3499#else
cea2e8a9 3500 DIE(aTHX_ PL_no_func, "symlink");
a0d0e21e
LW		 3501#endif
3502}
3503
3504PP(pp_readlink)
3505{
39644a26 3506 dSP; dTARGET;
a0d0e21e
LW		 3507#ifdef HAS_SYMLINK
3508 char *tmps;
46fc3d4c 3509 char buf[MAXPATHLEN];
a0d0e21e 3510 int len;
2d8e6c8d 3511 STRLEN n_a;
46fc3d4c 3512
fb73857a 3513#ifndef INCOMPLETE_TAINTS
3514 TAINT;
3515#endif
2d8e6c8d 3516 tmps = POPpx;
a0d0e21e
LW		 3517 len = readlink(tmps, buf, sizeof buf);
3518 EXTEND(SP, 1);
3519 if (len < 0)
3520 RETPUSHUNDEF;
3521 PUSHp(buf, len);
3522 RETURN;
3523#else
3524 EXTEND(SP, 1);
3525 RETSETUNDEF; /* just pretend it's a normal file */
3526#endif
3527}
3528
3529#if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
ba106d47 3530STATIC int
cea2e8a9 3531S_dooneliner(pTHX_ char *cmd, char *filename)
a0d0e21e 3532{
1e422769 3533 char *save_filename = filename;
3534 char *cmdline;
3535 char *s;
760ac839 3536 PerlIO *myfp;
1e422769 3537 int anum = 1;
a0d0e21e 3538
1e422769 3539 New(666, cmdline, strlen(cmd) + (strlen(filename) * 2) + 10, char);
3540 strcpy(cmdline, cmd);
3541 strcat(cmdline, " ");
3542 for (s = cmdline + strlen(cmdline); *filename; ) {
a0d0e21e
LW		 3543 *s++ = '\\';
3544 *s++ = *filename++;
3545 }
3546 strcpy(s, " 2>&1");
6ad3d225 3547 myfp = PerlProc_popen(cmdline, "r");
1e422769 3548 Safefree(cmdline);
3549
a0d0e21e 3550 if (myfp) {
1e422769 3551 SV *tmpsv = sv_newmortal();
6b88bc9c 3552 /* Need to save/restore 'PL_rs' ?? */
760ac839 3553 s = sv_gets(tmpsv, myfp, 0);
6ad3d225 3554 (void)PerlProc_pclose(myfp);
a0d0e21e 3555 if (s != Nullch) {
1e422769 3556 int e;
3557 for (e = 1;
a0d0e21e 3558#ifdef HAS_SYS_ERRLIST
1e422769 3559 e <= sys_nerr
3560#endif
3561 ; e++)
3562 {
3563 /* you don't see this */
3564 char *errmsg =
3565#ifdef HAS_SYS_ERRLIST
3566 sys_errlist[e]
a0d0e21e 3567#else
1e422769 3568 strerror(e)