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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
fd8cd3a3 73# if !defined(VMS)
20ce7b12
GS		 74 struct passwd *getpwnam (char *);
75 struct passwd *getpwuid (Uid_t);
fd8cd3a3 76# endif
a0d0e21e 77# endif
28e8609d 78# ifdef HAS_GETPWENT
20ce7b12 79 struct passwd *getpwent (void);
28e8609d 80# endif
a0d0e21e
LW		 81#endif
82
83#ifdef HAS_GROUP
84# ifdef I_GRP
85# include <grp.h>
86# else
20ce7b12
GS		 87 struct group *getgrnam (char *);
88 struct group *getgrgid (Gid_t);
a0d0e21e 89# endif
28e8609d 90# ifdef HAS_GETGRENT
20ce7b12 91 struct group *getgrent (void);
28e8609d 92# endif
a0d0e21e
LW		 93#endif
94
95#ifdef I_UTIME
3730b96e 96# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 97# include <sys/utime.h>
98# else
99# include <utime.h>
100# endif
a0d0e21e 101#endif
a0d0e21e 102
54310121 103/* Put this after #includes because fork and vfork prototypes may conflict. */
104#ifndef HAS_VFORK
105# define vfork fork
106#endif
107
cbdc8872 108#ifdef HAS_CHSIZE
cd52b7b2 109# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
110# undef my_chsize
111# endif
6ad3d225 112# define my_chsize PerlLIO_chsize
cbdc8872 113#endif
114
ff68c719 115#ifdef HAS_FLOCK
116# define FLOCK flock
117#else /* no flock() */
118
36477c24 119 /* fcntl.h might not have been included, even if it exists, because
120 the current Configure only sets I_FCNTL if it's needed to pick up
121 the *_OK constants. Make sure it has been included before testing
122 the fcntl() locking constants. */
123# if defined(HAS_FCNTL) && !defined(I_FCNTL)
124# include <fcntl.h>
125# endif
126
9d9004a9 127# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 128# define FLOCK fcntl_emulate_flock
129# define FCNTL_EMULATE_FLOCK
130# else /* no flock() or fcntl(F_SETLK,...) */
131# ifdef HAS_LOCKF
132# define FLOCK lockf_emulate_flock
133# define LOCKF_EMULATE_FLOCK
134# endif /* lockf */
135# endif /* no flock() or fcntl(F_SETLK,...) */
136
137# ifdef FLOCK
20ce7b12 138 static int FLOCK (int, int);
ff68c719 139
140 /*
141 * These are the flock() constants. Since this sytems doesn't have
142 * flock(), the values of the constants are probably not available.
143 */
144# ifndef LOCK_SH
145# define LOCK_SH 1
146# endif
147# ifndef LOCK_EX
148# define LOCK_EX 2
149# endif
150# ifndef LOCK_NB
151# define LOCK_NB 4
152# endif
153# ifndef LOCK_UN
154# define LOCK_UN 8
155# endif
156# endif /* emulating flock() */
157
158#endif /* no flock() */
55497cff 159
85ab1d1d
JH		 160#define ZBTLEN 10
161static char zero_but_true[ZBTLEN + 1] = "0 but true";
162
5ff3f7a4
GS		 163#if defined(I_SYS_ACCESS) && !defined(R_OK)
164# include <sys/access.h>
165#endif
166
c529f79d
CB		 167#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
168# define FD_CLOEXEC 1 /* NeXT needs this */
169#endif
170
5ff3f7a4
GS		 171#undef PERL_EFF_ACCESS_R_OK /* EFFective uid/gid ACCESS R_OK */
172#undef PERL_EFF_ACCESS_W_OK
173#undef PERL_EFF_ACCESS_X_OK
174
175/* F_OK unused: if stat() cannot find it... */
176
177#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 178 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
5ff3f7a4
GS		 179# define PERL_EFF_ACCESS_R_OK(p) (access((p), R_OK | EFF_ONLY_OK))
180# define PERL_EFF_ACCESS_W_OK(p) (access((p), W_OK | EFF_ONLY_OK))
181# define PERL_EFF_ACCESS_X_OK(p) (access((p), X_OK | EFF_ONLY_OK))
182#endif
183
184#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_EACCESS)
3813c136 185# ifdef I_SYS_SECURITY
5ff3f7a4
GS		 186# include <sys/security.h>
187# endif
c955f117
JH		 188# ifdef ACC_SELF
189 /* HP SecureWare */
190# define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK, ACC_SELF))
191# define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK, ACC_SELF))
192# define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK, ACC_SELF))
193# else
194 /* SCO */
195# define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK))
196# define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK))
197# define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK))
198# endif
5ff3f7a4
GS		 199#endif
200
201#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 202 /* AIX */
5ff3f7a4
GS		 203# define PERL_EFF_ACCESS_R_OK(p) (accessx((p), R_OK, ACC_SELF))
204# define PERL_EFF_ACCESS_W_OK(p) (accessx((p), W_OK, ACC_SELF))
205# define PERL_EFF_ACCESS_X_OK(p) (accessx((p), X_OK, ACC_SELF))
206#endif
207
327c3667
GS		 208#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) \
209 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
210 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 211/* The Hard Way. */
327c3667 212STATIC int
7f4774ae 213S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 214{
5ff3f7a4
GS		 215 Uid_t ruid = getuid();
216 Uid_t euid = geteuid();
217 Gid_t rgid = getgid();
218 Gid_t egid = getegid();
219 int res;
220
146174a9 221 LOCK_CRED_MUTEX;
5ff3f7a4 222#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 223 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 224#else
225#ifdef HAS_SETREUID
226 if (setreuid(euid, ruid))
227#else
228#ifdef HAS_SETRESUID
229 if (setresuid(euid, ruid, (Uid_t)-1))
230#endif
231#endif
cea2e8a9 232 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 233#endif
234
235#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 236 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS		 237#else
238#ifdef HAS_SETREGID
239 if (setregid(egid, rgid))
240#else
241#ifdef HAS_SETRESGID
242 if (setresgid(egid, rgid, (Gid_t)-1))
243#endif
244#endif
cea2e8a9 245 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 246#endif
247
248 res = access(path, mode);
249
250#ifdef HAS_SETREUID
251 if (setreuid(ruid, euid))
252#else
253#ifdef HAS_SETRESUID
254 if (setresuid(ruid, euid, (Uid_t)-1))
255#endif
256#endif
cea2e8a9 257 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 258
259#ifdef HAS_SETREGID
260 if (setregid(rgid, egid))
261#else
262#ifdef HAS_SETRESGID
263 if (setresgid(rgid, egid, (Gid_t)-1))
264#endif
265#endif
cea2e8a9 266 Perl_croak(aTHX_ "leaving effective gid failed");
146174a9 267 UNLOCK_CRED_MUTEX;
5ff3f7a4
GS		 268
269 return res;
270}
271# define PERL_EFF_ACCESS_R_OK(p) (emulate_eaccess((p), R_OK))
272# define PERL_EFF_ACCESS_W_OK(p) (emulate_eaccess((p), W_OK))
273# define PERL_EFF_ACCESS_X_OK(p) (emulate_eaccess((p), X_OK))
274#endif
275
276#if !defined(PERL_EFF_ACCESS_R_OK)
327c3667 277STATIC int
7f4774ae 278S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 279{
cea2e8a9 280 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 281 /*NOTREACHED*/
282 return -1;
283}
284#endif
285
a0d0e21e
LW		 286PP(pp_backtick)
287{
39644a26 288 dSP; dTARGET;
760ac839 289 PerlIO *fp;
2d8e6c8d
GS		 290 STRLEN n_a;
291 char *tmps = POPpx;
54310121 292 I32 gimme = GIMME_V;
16fe6d59 293 char *mode = "r";
54310121 294
a0d0e21e 295 TAINT_PROPER("``");
16fe6d59
GS		 296 if (PL_op->op_private & OPpOPEN_IN_RAW)
297 mode = "rb";
298 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
299 mode = "rt";
300 fp = PerlProc_popen(tmps, mode);
a0d0e21e 301 if (fp) {
ac27b0f5
NIS		 302 char *type = NULL;
303 if (PL_curcop->cop_io) {
304 type = SvPV_nolen(PL_curcop->cop_io);
305 }
ac27b0f5
NIS		 306 if (type && *type)
307 PerlIO_apply_layers(aTHX_ fp,mode,type);
308
54310121 309 if (gimme == G_VOID) {
96827780
MB		 310 char tmpbuf[256];
311 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
54310121 312 /*SUPPRESS 530*/
313 ;
314 }
315 else if (gimme == G_SCALAR) {
aa689395 316 sv_setpv(TARG, ""); /* note that this preserves previous buffer */
a0d0e21e
LW		 317 while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
318 /*SUPPRESS 530*/
319 ;
320 XPUSHs(TARG);
aa689395 321 SvTAINTED_on(TARG);
a0d0e21e
LW		 322 }
323 else {
324 SV *sv;
325
326 for (;;) {
8d6dde3e 327 sv = NEWSV(56, 79);
a0d0e21e
LW		 328 if (sv_gets(sv, fp, 0) == Nullch) {
329 SvREFCNT_dec(sv);
330 break;
331 }
332 XPUSHs(sv_2mortal(sv));
333 if (SvLEN(sv) - SvCUR(sv) > 20) {
334 SvLEN_set(sv, SvCUR(sv)+1);
335 Renew(SvPVX(sv), SvLEN(sv), char);
336 }
aa689395 337 SvTAINTED_on(sv);
a0d0e21e
LW		 338 }
339 }
6ad3d225 340 STATUS_NATIVE_SET(PerlProc_pclose(fp));
aa689395 341 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 342 }
343 else {
f86702cc 344 STATUS_NATIVE_SET(-1);
54310121 345 if (gimme == G_SCALAR)
a0d0e21e
LW		 346 RETPUSHUNDEF;
347 }
348
349 RETURN;
350}
351
352PP(pp_glob)
353{
354 OP *result;
f5284f61
IZ		 355 tryAMAGICunTARGET(iter, -1);
356
71686f12
GS		 357 /* Note that we only ever get here if File::Glob fails to load
358 * without at the same time croaking, for some reason, or if
359 * perl was built with PERL_EXTERNAL_GLOB */
360
a0d0e21e 361 ENTER;
a0d0e21e 362
c90c0ff4 363#ifndef VMS
3280af22 364 if (PL_tainting) {
7bac28a0 365 /*
366 * The external globbing program may use things we can't control,
367 * so for security reasons we must assume the worst.
368 */
369 TAINT;
22c35a8c 370 taint_proper(PL_no_security, "glob");
7bac28a0 371 }
c90c0ff4 372#endif /* !VMS */
7bac28a0 373
3280af22
NIS		 374 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
375 PL_last_in_gv = (GV*)*PL_stack_sp--;
a0d0e21e 376
3280af22 377 SAVESPTR(PL_rs); /* This is not permanent, either. */
79cb57f6 378 PL_rs = sv_2mortal(newSVpvn("\000", 1));
c07a80fd 379#ifndef DOSISH
380#ifndef CSH
6b88bc9c 381 *SvPVX(PL_rs) = '\n';
a0d0e21e 382#endif /* !CSH */
55497cff 383#endif /* !DOSISH */
c07a80fd 384
a0d0e21e
LW		 385 result = do_readline();
386 LEAVE;
387 return result;
388}
389
15e52e56 390#if 0 /* XXX never used! */
a0d0e21e
LW		 391PP(pp_indread)
392{
2d8e6c8d
GS		 393 STRLEN n_a;
394 PL_last_in_gv = gv_fetchpv(SvPVx(GvSV((GV*)(*PL_stack_sp--)), n_a), TRUE,SVt_PVIO);
a0d0e21e
LW		 395 return do_readline();
396}
15e52e56 397#endif
a0d0e21e
LW		 398
399PP(pp_rcatline)
400{
146174a9 401 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 402 return do_readline();
403}
404
405PP(pp_warn)
406{
39644a26 407 dSP; dMARK;
06bf62c7 408 SV *tmpsv;
a0d0e21e 409 char *tmps;
06bf62c7 410 STRLEN len;
a0d0e21e
LW		 411 if (SP - MARK != 1) {
412 dTARGET;
3280af22 413 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 414 tmpsv = TARG;
a0d0e21e
LW		 415 SP = MARK + 1;
416 }
417 else {
06bf62c7 418 tmpsv = TOPs;
a0d0e21e 419 }
06bf62c7
GS		 420 tmps = SvPV(tmpsv, len);
421 if (!tmps || !len) {
4e6ea2c3
GS		 422 SV *error = ERRSV;
423 (void)SvUPGRADE(error, SVt_PV);
424 if (SvPOK(error) && SvCUR(error))
425 sv_catpv(error, "\t...caught");
06bf62c7
GS		 426 tmpsv = error;
427 tmps = SvPV(tmpsv, len);
a0d0e21e 428 }
06bf62c7
GS		 429 if (!tmps || !len)
430 tmpsv = sv_2mortal(newSVpvn("Warning: something's wrong", 26));
431
cb50131a 432 Perl_warn(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 433 RETSETYES;
434}
435
436PP(pp_die)
437{
39644a26 438 dSP; dMARK;
a0d0e21e 439 char *tmps;
06bf62c7
GS		 440 SV *tmpsv;
441 STRLEN len;
442 bool multiarg = 0;
a0d0e21e
LW		 443 if (SP - MARK != 1) {
444 dTARGET;
3280af22 445 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7
GS		 446 tmpsv = TARG;
447 tmps = SvPV(tmpsv, len);
448 multiarg = 1;
a0d0e21e
LW		 449 SP = MARK + 1;
450 }
451 else {
4e6ea2c3 452 tmpsv = TOPs;
bf484eac 453 tmps = (SvROK(tmpsv) && PL_in_eval) ? Nullch : SvPV(tmpsv, len);
a0d0e21e 454 }
06bf62c7 455 if (!tmps || !len) {
4e6ea2c3
GS		 456 SV *error = ERRSV;
457 (void)SvUPGRADE(error, SVt_PV);
06bf62c7
GS		 458 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
459 if (!multiarg)
4e6ea2c3 460 SvSetSV(error,tmpsv);
06bf62c7 461 else if (sv_isobject(error)) {
05423cc9
GS		 462 HV *stash = SvSTASH(SvRV(error));
463 GV *gv = gv_fetchmethod(stash, "PROPAGATE");
464 if (gv) {
146174a9 465 SV *file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
b448e4fe 466 SV *line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
05423cc9
GS		 467 EXTEND(SP, 3);
468 PUSHMARK(SP);
469 PUSHs(error);
470 PUSHs(file);
471 PUSHs(line);
472 PUTBACK;
864dbfa3
GS		 473 call_sv((SV*)GvCV(gv),
474 G_SCALAR|G_EVAL|G_KEEPERR);
3280af22 475 sv_setsv(error,*PL_stack_sp--);
05423cc9
GS		 476 }
477 }
cea2e8a9 478 DIE(aTHX_ Nullch);
4e6ea2c3
GS		 479 }
480 else {
481 if (SvPOK(error) && SvCUR(error))
482 sv_catpv(error, "\t...propagated");
06bf62c7
GS		 483 tmpsv = error;
484 tmps = SvPV(tmpsv, len);
4e6ea2c3 485 }
a0d0e21e 486 }
06bf62c7
GS		 487 if (!tmps || !len)
488 tmpsv = sv_2mortal(newSVpvn("Died", 4));
489
cb50131a 490 DIE(aTHX_ "%"SVf, tmpsv);
a0d0e21e
LW		 491}
492
493/* I/O. */
494
495PP(pp_open)
496{
39644a26 497 dSP;
a567e93b
NIS		 498 dMARK; dORIGMARK;
499 dTARGET;
a0d0e21e
LW		 500 GV *gv;
501 SV *sv;
502 char *tmps;
503 STRLEN len;
4592e6ca 504 MAGIC *mg;
a567e93b 505 bool ok;
a0d0e21e 506
a567e93b 507 gv = (GV *)*++MARK;
5f05dabc 508 if (!isGV(gv))
cea2e8a9 509 DIE(aTHX_ PL_no_usym, "filehandle");
36477c24 510 if (GvIOp(gv))
511 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 512
14befaf4 513 if ((mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) {
a567e93b
NIS		 514 /* Method's args are same as ours ... */
515 /* ... except handle is replaced by the object */
516 *MARK-- = SvTIED_obj((SV*)gv, mg);
517 PUSHMARK(MARK);
4592e6ca
NIS		 518 PUTBACK;
519 ENTER;
864dbfa3 520 call_method("OPEN", G_SCALAR);
4592e6ca
NIS		 521 LEAVE;
522 SPAGAIN;
523 RETURN;
524 }
525
a567e93b
NIS		 526 if (MARK < SP) {
527 sv = *++MARK;
528 }
529 else {
530 sv = GvSV(gv);
531 }
532
a0d0e21e 533 tmps = SvPV(sv, len);
a567e93b
NIS		 534 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp, MARK+1, (SP-MARK));
535 SP = ORIGMARK;
536 if (ok)
3280af22
NIS		 537 PUSHi( (I32)PL_forkprocess );
538 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 539 PUSHi(0);
540 else
541 RETPUSHUNDEF;
542 RETURN;
543}
544
545PP(pp_close)
546{
39644a26 547 dSP;
a0d0e21e 548 GV *gv;
1d603a67 549 MAGIC *mg;
a0d0e21e
LW		 550
551 if (MAXARG == 0)
3280af22 552 gv = PL_defoutgv;
a0d0e21e
LW		 553 else
554 gv = (GV*)POPs;
1d603a67 555
14befaf4 556 if ((mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) {
1d603a67 557 PUSHMARK(SP);
33c27489 558 XPUSHs(SvTIED_obj((SV*)gv, mg));
1d603a67
GB		 559 PUTBACK;
560 ENTER;
864dbfa3 561 call_method("CLOSE", G_SCALAR);
1d603a67
GB		 562 LEAVE;
563 SPAGAIN;
564 RETURN;
565 }
a0d0e21e 566 EXTEND(SP, 1);
54310121 567 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 568 RETURN;
569}
570
571PP(pp_pipe_op)
572{
39644a26 573 dSP;
a0d0e21e
LW		 574#ifdef HAS_PIPE
575 GV *rgv;
576 GV *wgv;
577 register IO *rstio;
578 register IO *wstio;
579 int fd[2];
580
581 wgv = (GV*)POPs;
582 rgv = (GV*)POPs;
583
584 if (!rgv || !wgv)
585 goto badexit;
586
4633a7c4 587 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
cea2e8a9 588 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 589 rstio = GvIOn(rgv);
590 wstio = GvIOn(wgv);
591
592 if (IoIFP(rstio))
593 do_close(rgv, FALSE);
594 if (IoIFP(wstio))
595 do_close(wgv, FALSE);
596
6ad3d225 597 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 598 goto badexit;
599
760ac839
LW		 600 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
601 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
a0d0e21e 602 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 603 IoTYPE(rstio) = IoTYPE_RDONLY;
604 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 605
606 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 607 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
6ad3d225 608 else PerlLIO_close(fd[0]);
760ac839 609 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
6ad3d225 610 else PerlLIO_close(fd[1]);
a0d0e21e
LW		 611 goto badexit;
612 }
4771b018
GS		 613#if defined(HAS_FCNTL) && defined(F_SETFD)
614 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
615 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
616#endif
a0d0e21e
LW		 617 RETPUSHYES;
618
619badexit:
620 RETPUSHUNDEF;
621#else
cea2e8a9 622 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 623#endif
624}
625
626PP(pp_fileno)
627{
39644a26 628 dSP; dTARGET;
a0d0e21e
LW		 629 GV *gv;
630 IO *io;
760ac839 631 PerlIO *fp;
4592e6ca
NIS		 632 MAGIC *mg;
633
a0d0e21e
LW		 634 if (MAXARG < 1)
635 RETPUSHUNDEF;
636 gv = (GV*)POPs;
4592e6ca 637
14befaf4 638 if (gv && (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) {
4592e6ca
NIS		 639 PUSHMARK(SP);
640 XPUSHs(SvTIED_obj((SV*)gv, mg));
641 PUTBACK;
642 ENTER;
864dbfa3 643 call_method("FILENO", G_SCALAR);
4592e6ca
NIS		 644 LEAVE;
645 SPAGAIN;
646 RETURN;
647 }
648
c289d2f7
JH		 649 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
650 /* Can't do this because people seem to do things like
651 defined(fileno($foo)) to check whether $foo is a valid fh.
652 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
653 report_evil_fh(gv, io, PL_op->op_type);
654 */
a0d0e21e 655 RETPUSHUNDEF;
c289d2f7
JH		 656 }
657
760ac839 658 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 659 RETURN;
660}
661
662PP(pp_umask)
663{
39644a26 664 dSP; dTARGET;
761237fe 665 Mode_t anum;
a0d0e21e
LW		 666
667#ifdef HAS_UMASK
668 if (MAXARG < 1) {
6ad3d225
GS		 669 anum = PerlLIO_umask(0);
670 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 671 }
672 else
6ad3d225 673 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 674 TAINT_PROPER("umask");
675 XPUSHi(anum);
676#else
eec2d3df
GS		 677 /* Only DIE if trying to restrict permissions on `user' (self).
678 * Otherwise it's harmless and more useful to just return undef
679 * since 'group' and 'other' concepts probably don't exist here. */
680 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 681 DIE(aTHX_ "umask not implemented");
6b88bc9c 682 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 683#endif
684 RETURN;
685}
686
687PP(pp_binmode)
688{
39644a26 689 dSP;
a0d0e21e
LW		 690 GV *gv;
691 IO *io;
760ac839 692 PerlIO *fp;
4592e6ca 693 MAGIC *mg;
16fe6d59 694 SV *discp = Nullsv;
60382766
NIS		 695 STRLEN len = 0;
696 char *names = NULL;
a0d0e21e
LW		 697
698 if (MAXARG < 1)
699 RETPUSHUNDEF;
60382766 700 if (MAXARG > 1) {
16fe6d59 701 discp = POPs;
60382766 702 }
a0d0e21e 703
301e8125 704 gv = (GV*)POPs;
4592e6ca 705
14befaf4 706 if (gv && (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) {
4592e6ca
NIS		 707 PUSHMARK(SP);
708 XPUSHs(SvTIED_obj((SV*)gv, mg));
16fe6d59
GS		 709 if (discp)
710 XPUSHs(discp);
4592e6ca
NIS		 711 PUTBACK;
712 ENTER;
864dbfa3 713 call_method("BINMODE", G_SCALAR);
4592e6ca
NIS		 714 LEAVE;
715 SPAGAIN;
716 RETURN;
717 }
a0d0e21e
LW		 718
719 EXTEND(SP, 1);
50f846a7 720 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7
JH		 721 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
722 report_evil_fh(gv, io, PL_op->op_type);
50f846a7
SC		 723 RETPUSHUNDEF;
724 }
a0d0e21e 725
60382766
NIS		 726 if (discp) {
727 names = SvPV(discp,len);
728 }
729
730 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
731 (discp) ? SvPV_nolen(discp) : Nullch))
a0d0e21e
LW		 732 RETPUSHYES;
733 else
734 RETPUSHUNDEF;
a0d0e21e
LW		 735}
736
737PP(pp_tie)
738{
39644a26 739 dSP;
e336de0d 740 dMARK;
a0d0e21e
LW		 741 SV *varsv;
742 HV* stash;
743 GV *gv;
a0d0e21e 744 SV *sv;
3280af22 745 I32 markoff = MARK - PL_stack_base;
a0d0e21e 746 char *methname;
14befaf4 747 int how = PERL_MAGIC_tied;
e336de0d 748 U32 items;
2d8e6c8d 749 STRLEN n_a;
a0d0e21e 750
e336de0d 751 varsv = *++MARK;
6b05c17a
NIS		 752 switch(SvTYPE(varsv)) {
753 case SVt_PVHV:
754 methname = "TIEHASH";
755 break;
756 case SVt_PVAV:
757 methname = "TIEARRAY";
758 break;
759 case SVt_PVGV:
5bd07a3d
DM		 760#ifdef GV_SHARED_CHECK
761 if (GvSHARED((GV*)varsv)) {
762 Perl_croak(aTHX_ "Attempt to tie shared GV");
763 }
764#endif
6b05c17a 765 methname = "TIEHANDLE";
14befaf4 766 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 767 break;
768 default:
769 methname = "TIESCALAR";
14befaf4 770 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 771 break;
772 }
e336de0d
GS		 773 items = SP - MARK++;
774 if (sv_isobject(*MARK)) {
6b05c17a 775 ENTER;
e788e7d3 776 PUSHSTACKi(PERLSI_MAGIC);
e336de0d
GS		 777 PUSHMARK(SP);
778 EXTEND(SP,items);
779 while (items--)
780 PUSHs(*MARK++);
781 PUTBACK;
864dbfa3 782 call_method(methname, G_SCALAR);
301e8125 783 }
6b05c17a 784 else {
864dbfa3 785 /* Not clear why we don't call call_method here too.
6b05c17a
NIS		 786 * perhaps to get different error message ?
787 */
e336de0d 788 stash = gv_stashsv(*MARK, FALSE);
6b05c17a 789 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
cea2e8a9 790 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%s\"",
301e8125 791 methname, SvPV(*MARK,n_a));
6b05c17a
NIS		 792 }
793 ENTER;
e788e7d3 794 PUSHSTACKi(PERLSI_MAGIC);
e336de0d
GS		 795 PUSHMARK(SP);
796 EXTEND(SP,items);
797 while (items--)
798 PUSHs(*MARK++);
799 PUTBACK;
864dbfa3 800 call_sv((SV*)GvCV(gv), G_SCALAR);
6b05c17a 801 }
a0d0e21e
LW		 802 SPAGAIN;
803
804 sv = TOPs;
d3acc0f7 805 POPSTACK;
a0d0e21e 806 if (sv_isobject(sv)) {
33c27489 807 sv_unmagic(varsv, how);
ae21d580
JH		 808 /* Croak if a self-tie on an aggregate is attempted. */
809 if (varsv == SvRV(sv) &&
810 (SvTYPE(sv) == SVt_PVAV ||
811 SvTYPE(sv) == SVt_PVHV))
812 Perl_croak(aTHX_
813 "Self-ties of arrays and hashes are not supported");
68a4a7e4 814 sv_magic(varsv, sv, how, Nullch, 0);
a0d0e21e
LW		 815 }
816 LEAVE;
3280af22 817 SP = PL_stack_base + markoff;
a0d0e21e
LW		 818 PUSHs(sv);
819 RETURN;
820}
821
822PP(pp_untie)
823{
39644a26 824 dSP;
33c27489 825 SV *sv = POPs;
14befaf4
DM		 826 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
827 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 828
cbdc8872 829 MAGIC * mg ;
155aba94 830 if ((mg = SvTIED_mg(sv, how))) {
a29a5827
NIS		 831 SV *obj = SvRV(mg->mg_obj);
832 GV *gv;
833 CV *cv = NULL;
a29a5827
NIS		 834 if ((gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE)) &&
835 isGV(gv) && (cv = GvCV(gv))) {
836 PUSHMARK(SP);
837 XPUSHs(SvTIED_obj((SV*)gv, mg));
301e8125 838 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
a29a5827
NIS		 839 PUTBACK;
840 ENTER;
841 call_sv((SV *)cv, G_VOID);
842 LEAVE;
843 SPAGAIN;
cbdc8872 844 }
301e8125
NIS		 845 else if (ckWARN(WARN_UNTIE)) {
846 if (mg && SvREFCNT(obj) > 1)
847 Perl_warner(aTHX_ WARN_UNTIE,
848 "untie attempted while %"UVuf" inner references still exist",
849 (UV)SvREFCNT(obj) - 1 ) ;
850 }
cbdc8872 851 }
33c27489 852 sv_unmagic(sv, how);
55497cff 853 RETPUSHYES;
a0d0e21e
LW		 854}
855
c07a80fd 856PP(pp_tied)
857{
39644a26 858 dSP;
33c27489 859 SV *sv = POPs;
14befaf4
DM		 860 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
861 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
33c27489 862 MAGIC *mg;
c07a80fd 863
155aba94 864 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 865 SV *osv = SvTIED_obj(sv, mg);
866 if (osv == mg->mg_obj)
867 osv = sv_mortalcopy(osv);
868 PUSHs(osv);
869 RETURN;
c07a80fd 870 }
c07a80fd 871 RETPUSHUNDEF;
872}
873
a0d0e21e
LW		 874PP(pp_dbmopen)
875{
39644a26 876 dSP;
a0d0e21e
LW		 877 HV *hv;
878 dPOPPOPssrl;
879 HV* stash;
880 GV *gv;
a0d0e21e
LW		 881 SV *sv;
882
883 hv = (HV*)POPs;
884
3280af22 885 sv = sv_mortalcopy(&PL_sv_no);
a0d0e21e
LW		 886 sv_setpv(sv, "AnyDBM_File");
887 stash = gv_stashsv(sv, FALSE);
8ebc5c01 888 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 889 PUTBACK;
864dbfa3 890 require_pv("AnyDBM_File.pm");
a0d0e21e 891 SPAGAIN;
8ebc5c01 892 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 893 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 894 }
895
57d3b86d 896 ENTER;
924508f0 897 PUSHMARK(SP);
6b05c17a 898
924508f0 899 EXTEND(SP, 5);
a0d0e21e
LW		 900 PUSHs(sv);
901 PUSHs(left);
902 if (SvIV(right))
b448e4fe 903 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
a0d0e21e 904 else
b448e4fe 905 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
a0d0e21e 906 PUSHs(right);
57d3b86d 907 PUTBACK;
864dbfa3 908 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 909 SPAGAIN;
910
911 if (!sv_isobject(TOPs)) {
924508f0
GS		 912 SP--;
913 PUSHMARK(SP);
a0d0e21e
LW		 914 PUSHs(sv);
915 PUSHs(left);
b448e4fe 916 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
a0d0e21e 917 PUSHs(right);
a0d0e21e 918 PUTBACK;
864dbfa3 919 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 920 SPAGAIN;
921 }
922
6b05c17a 923 if (sv_isobject(TOPs)) {
14befaf4
DM		 924 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
925 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, Nullch, 0);
6b05c17a 926 }
a0d0e21e
LW		 927 LEAVE;
928 RETURN;
929}
930
931PP(pp_dbmclose)
932{
cea2e8a9 933 return pp_untie();
a0d0e21e
LW		 934}
935
936PP(pp_sselect)
937{
39644a26 938 dSP; dTARGET;
a0d0e21e
LW		 939#ifdef HAS_SELECT
940 register I32 i;
941 register I32 j;
942 register char *s;
943 register SV *sv;
65202027 944 NV value;
a0d0e21e
LW		 945 I32 maxlen = 0;
946 I32 nfound;
947 struct timeval timebuf;
948 struct timeval *tbuf = &timebuf;
949 I32 growsize;
950 char *fd_sets[4];
2d8e6c8d 951 STRLEN n_a;
a0d0e21e
LW		 952#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
953 I32 masksize;
954 I32 offset;
955 I32 k;
956
957# if BYTEORDER & 0xf0000
958# define ORDERBYTE (0x88888888 - BYTEORDER)
959# else
960# define ORDERBYTE (0x4444 - BYTEORDER)
961# endif
962
963#endif
964
965 SP -= 4;
966 for (i = 1; i <= 3; i++) {
967 if (!SvPOK(SP[i]))
968 continue;
969 j = SvCUR(SP[i]);
970 if (maxlen < j)
971 maxlen = j;
972 }
973
5ff3f7a4 974/* little endians can use vecs directly */
a0d0e21e 975#if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
5ff3f7a4 976# if SELECT_MIN_BITS > 1
f2da832e
JH		 977 /* If SELECT_MIN_BITS is greater than one we most probably will want
978 * to align the sizes with SELECT_MIN_BITS/8 because for example
979 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
f556e5b9 980 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
8f1f23e8 981 * on (sets/tests/clears bits) is 32 bits. */
f2da832e 982 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
5ff3f7a4 983# else
4633a7c4 984 growsize = sizeof(fd_set);
5ff3f7a4
GS		 985# endif
986# else
987# ifdef NFDBITS
a0d0e21e 988
5ff3f7a4
GS		 989# ifndef NBBY
990# define NBBY 8
991# endif
a0d0e21e
LW		 992
993 masksize = NFDBITS / NBBY;
5ff3f7a4 994# else
a0d0e21e 995 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 996# endif
a0d0e21e
LW		 997 growsize = maxlen + (masksize - (maxlen % masksize));
998 Zero(&fd_sets[0], 4, char*);
999#endif
1000
1001 sv = SP[4];
1002 if (SvOK(sv)) {
1003 value = SvNV(sv);
1004 if (value < 0.0)
1005 value = 0.0;
1006 timebuf.tv_sec = (long)value;
65202027 1007 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1008 timebuf.tv_usec = (long)(value * 1000000.0);
1009 }
1010 else
1011 tbuf = Null(struct timeval*);
1012
1013 for (i = 1; i <= 3; i++) {
1014 sv = SP[i];
1015 if (!SvOK(sv)) {
1016 fd_sets[i] = 0;
1017 continue;
1018 }
1019 else if (!SvPOK(sv))
2d8e6c8d 1020 SvPV_force(sv,n_a); /* force string conversion */
a0d0e21e
LW		 1021 j = SvLEN(sv);
1022 if (j < growsize) {
1023 Sv_Grow(sv, growsize);
a0d0e21e 1024 }
c07a80fd 1025 j = SvCUR(sv);
1026 s = SvPVX(sv) + j;
1027 while (++j <= growsize) {
1028 *s++ = '\0';
1029 }
1030
a0d0e21e
LW		 1031#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1032 s = SvPVX(sv);
1033 New(403, fd_sets[i], growsize, char);
1034 for (offset = 0; offset < growsize; offset += masksize) {
1035 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1036 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1037 }
1038#else
1039 fd_sets[i] = SvPVX(sv);
1040#endif
1041 }
1042
6ad3d225 1043 nfound = PerlSock_select(
a0d0e21e
LW		 1044 maxlen * 8,
1045 (Select_fd_set_t) fd_sets[1],
1046 (Select_fd_set_t) fd_sets[2],
1047 (Select_fd_set_t) fd_sets[3],
1048 tbuf);
1049 for (i = 1; i <= 3; i++) {
1050 if (fd_sets[i]) {
1051 sv = SP[i];
1052#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1053 s = SvPVX(sv);
1054 for (offset = 0; offset < growsize; offset += masksize) {
1055 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1056 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1057 }
1058 Safefree(fd_sets[i]);
1059#endif
1060 SvSETMAGIC(sv);
1061 }
1062 }
1063
1064 PUSHi(nfound);
1065 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1066 value = (NV)(timebuf.tv_sec) +
1067 (NV)(timebuf.tv_usec) / 1000000.0;
3280af22 1068 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 1069 sv_setnv(sv, value);
1070 }
1071 RETURN;
1072#else
cea2e8a9 1073 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1074#endif
1075}
1076
4633a7c4 1077void
864dbfa3 1078Perl_setdefout(pTHX_ GV *gv)
4633a7c4
LW		 1079{
1080 if (gv)
1081 (void)SvREFCNT_inc(gv);
3280af22
NIS		 1082 if (PL_defoutgv)
1083 SvREFCNT_dec(PL_defoutgv);
1084 PL_defoutgv = gv;
4633a7c4
LW		 1085}
1086
a0d0e21e
LW		 1087PP(pp_select)
1088{
39644a26 1089 dSP; dTARGET;
4633a7c4
LW		 1090 GV *newdefout, *egv;
1091 HV *hv;
1092
533c011a 1093 newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
4633a7c4 1094
3280af22 1095 egv = GvEGV(PL_defoutgv);
4633a7c4 1096 if (!egv)
3280af22 1097 egv = PL_defoutgv;
4633a7c4
LW		 1098 hv = GvSTASH(egv);
1099 if (! hv)
3280af22 1100 XPUSHs(&PL_sv_undef);
4633a7c4 1101 else {
cbdc8872 1102 GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1103 if (gvp && *gvp == egv) {
f7aaccc2 1104 gv_efullname4(TARG, PL_defoutgv, Nullch, TRUE);
f86702cc 1105 XPUSHTARG;
1106 }
1107 else {
1108 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1109 }
4633a7c4
LW		 1110 }
1111
1112 if (newdefout) {
ded8aa31
GS		 1113 if (!GvIO(newdefout))
1114 gv_IOadd(newdefout);
4633a7c4
LW		 1115 setdefout(newdefout);
1116 }
1117
a0d0e21e
LW		 1118 RETURN;
1119}
1120
1121PP(pp_getc)
1122{
39644a26 1123 dSP; dTARGET;
a0d0e21e 1124 GV *gv;
2ae324a7 1125 MAGIC *mg;
a0d0e21e 1126
32da55ab 1127 if (MAXARG == 0)
3280af22 1128 gv = PL_stdingv;
a0d0e21e
LW		 1129 else
1130 gv = (GV*)POPs;
2ae324a7 1131
14befaf4 1132 if ((mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) {
54310121 1133 I32 gimme = GIMME_V;
2ae324a7 1134 PUSHMARK(SP);
33c27489 1135 XPUSHs(SvTIED_obj((SV*)gv, mg));
2ae324a7 1136 PUTBACK;
1137 ENTER;
864dbfa3 1138 call_method("GETC", gimme);
2ae324a7 1139 LEAVE;
1140 SPAGAIN;
54310121 1141 if (gimme == G_SCALAR)
1142 SvSetMagicSV_nosteal(TARG, TOPs);
2ae324a7 1143 RETURN;
1144 }
9bc64814 1145 if (!gv || do_eof(gv)) /* make sure we have fp with something */
a0d0e21e 1146 RETPUSHUNDEF;
bbce6d69 1147 TAINT;
a0d0e21e 1148 sv_setpv(TARG, " ");
9bc64814 1149 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1150 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1151 /* Find out how many bytes the char needs */
1152 Size_t len = UTF8SKIP(SvPVX(TARG));
1153 if (len > 1) {
1154 SvGROW(TARG,len+1);
1155 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1156 SvCUR_set(TARG,1+len);
1157 }
1158 SvUTF8_on(TARG);
1159 }
a0d0e21e
LW		 1160 PUSHTARG;
1161 RETURN;
1162}
1163
1164PP(pp_read)
1165{
cea2e8a9 1166 return pp_sysread();
a0d0e21e
LW		 1167}
1168
76e3520e 1169STATIC OP *
cea2e8a9 1170S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1171{
c09156bb 1172 register PERL_CONTEXT *cx;
54310121 1173 I32 gimme = GIMME_V;
a0d0e21e
LW		 1174 AV* padlist = CvPADLIST(cv);
1175 SV** svp = AvARRAY(padlist);
1176
1177 ENTER;
1178 SAVETMPS;
1179
1180 push_return(retop);
146174a9 1181 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
a0d0e21e 1182 PUSHFORMAT(cx);
146174a9 1183 SAVEVPTR(PL_curpad);
3280af22 1184 PL_curpad = AvARRAY((AV*)svp[1]);
a0d0e21e 1185
4633a7c4 1186 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1187 return CvSTART(cv);
1188}
1189
1190PP(pp_enterwrite)
1191{
39644a26 1192 dSP;
a0d0e21e
LW		 1193 register GV *gv;
1194 register IO *io;
1195 GV *fgv;
1196 CV *cv;
1197
1198 if (MAXARG == 0)
3280af22 1199 gv = PL_defoutgv;
a0d0e21e
LW		 1200 else {
1201 gv = (GV*)POPs;
1202 if (!gv)
3280af22 1203 gv = PL_defoutgv;
a0d0e21e
LW		 1204 }
1205 EXTEND(SP, 1);
1206 io = GvIO(gv);
1207 if (!io) {
1208 RETPUSHNO;
1209 }
1210 if (IoFMT_GV(io))
1211 fgv = IoFMT_GV(io);
1212 else
1213 fgv = gv;
1214
1215 cv = GvFORM(fgv);
a0d0e21e 1216 if (!cv) {
2dd78f96 1217 char *name = NULL;
a0d0e21e 1218 if (fgv) {
748a9306 1219 SV *tmpsv = sv_newmortal();
43693395 1220 gv_efullname4(tmpsv, fgv, Nullch, FALSE);
2dd78f96 1221 name = SvPV_nolen(tmpsv);
a0d0e21e 1222 }
2dd78f96
JH		 1223 if (name && *name)
1224 DIE(aTHX_ "Undefined format \"%s\" called", name);
cea2e8a9 1225 DIE(aTHX_ "Not a format reference");
a0d0e21e 1226 }
44a8e56a 1227 if (CvCLONE(cv))
1228 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1229
44a8e56a 1230 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1231 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1232}
1233
1234PP(pp_leavewrite)
1235{
39644a26 1236 dSP;
a0d0e21e
LW		 1237 GV *gv = cxstack[cxstack_ix].blk_sub.gv;
1238 register IO *io = GvIOp(gv);
760ac839
LW		 1239 PerlIO *ofp = IoOFP(io);
1240 PerlIO *fp;
a0d0e21e
LW		 1241 SV **newsp;
1242 I32 gimme;
c09156bb 1243 register PERL_CONTEXT *cx;
a0d0e21e 1244
760ac839 1245 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1246 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
7ef822cd
JH		 1247 if (!io || !ofp)
1248 goto forget_top;
3280af22
NIS		 1249 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1250 PL_formtarget != PL_toptarget)
a0d0e21e 1251 {
4633a7c4
LW		 1252 GV *fgv;
1253 CV *cv;
a0d0e21e
LW		 1254 if (!IoTOP_GV(io)) {
1255 GV *topgv;
46fc3d4c 1256 SV *topname;
a0d0e21e
LW		 1257
1258 if (!IoTOP_NAME(io)) {
1259 if (!IoFMT_NAME(io))
1260 IoFMT_NAME(io) = savepv(GvNAME(gv));
cea2e8a9 1261 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", IoFMT_NAME(io)));
46fc3d4c 1262 topgv = gv_fetchpv(SvPVX(topname), FALSE, SVt_PVFM);
748a9306 1263 if ((topgv && GvFORM(topgv)) ||
a0d0e21e 1264 !gv_fetchpv("top",FALSE,SVt_PVFM))
46fc3d4c 1265 IoTOP_NAME(io) = savepv(SvPVX(topname));
a0d0e21e
LW		 1266 else
1267 IoTOP_NAME(io) = savepv("top");
1268 }
1269 topgv = gv_fetchpv(IoTOP_NAME(io),FALSE, SVt_PVFM);
1270 if (!topgv || !GvFORM(topgv)) {
1271 IoLINES_LEFT(io) = 100000000;
1272 goto forget_top;
1273 }
1274 IoTOP_GV(io) = topgv;
1275 }
748a9306
LW		 1276 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1277 I32 lines = IoLINES_LEFT(io);
3280af22 1278 char *s = SvPVX(PL_formtarget);
8e07c86e
AD		 1279 if (lines <= 0) /* Yow, header didn't even fit!!! */
1280 goto forget_top;
748a9306
LW		 1281 while (lines-- > 0) {
1282 s = strchr(s, '\n');
1283 if (!s)
1284 break;
1285 s++;
1286 }
1287 if (s) {
d75029d0
NIS		 1288 STRLEN save = SvCUR(PL_formtarget);
1289 SvCUR_set(PL_formtarget, s - SvPVX(PL_formtarget));
1290 do_print(PL_formtarget, ofp);
1291 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1292 sv_chop(PL_formtarget, s);
1293 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1294 }
1295 }
a0d0e21e 1296 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1297 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1298 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1299 IoPAGE(io)++;
3280af22 1300 PL_formtarget = PL_toptarget;
748a9306 1301 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1302 fgv = IoTOP_GV(io);
1303 if (!fgv)
cea2e8a9 1304 DIE(aTHX_ "bad top format reference");
4633a7c4 1305 cv = GvFORM(fgv);
2dd78f96
JH		 1306 {
1307 char *name = NULL;
1308 if (!cv) {
1309 SV *sv = sv_newmortal();
1310 gv_efullname4(sv, fgv, Nullch, FALSE);
1311 name = SvPV_nolen(sv);
1312 }
1313 if (name && *name)
1314 DIE(aTHX_ "Undefined top format \"%s\" called",name);
1315 /* why no:
1316 else
1317 DIE(aTHX_ "Undefined top format called");
1318 ?*/
4633a7c4 1319 }
44a8e56a 1320 if (CvCLONE(cv))
1321 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
533c011a 1322 return doform(cv,gv,PL_op);
a0d0e21e
LW		 1323 }
1324
1325 forget_top:
3280af22 1326 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1327 POPFORMAT(cx);
1328 LEAVE;
1329
1330 fp = IoOFP(io);
1331 if (!fp) {
599cee73 1332 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
cb50131a 1333 if (IoIFP(io)) {
2dd78f96
JH		 1334 /* integrate with report_evil_fh()? */
1335 char *name = NULL;
1336 if (isGV(gv)) {
1337 SV* sv = sv_newmortal();
1338 gv_efullname4(sv, gv, Nullch, FALSE);
1339 name = SvPV_nolen(sv);
1340 }
1341 if (name && *name)
1342 Perl_warner(aTHX_ WARN_IO,
1343 "Filehandle %s opened only for input", name);
1344 else
1345 Perl_warner(aTHX_ WARN_IO,
1346 "Filehandle opened only for input");
cb50131a 1347 }
599cee73 1348 else if (ckWARN(WARN_CLOSED))
bc37a18f 1349 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1350 }
3280af22 1351 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1352 }
1353 else {
3280af22 1354 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1355 if (ckWARN(WARN_IO))
cea2e8a9 1356 Perl_warner(aTHX_ WARN_IO, "page overflow");
a0d0e21e 1357 }
d75029d0 1358 if (!do_print(PL_formtarget, fp))
3280af22 1359 PUSHs(&PL_sv_no);
a0d0e21e 1360 else {
3280af22
NIS		 1361 FmLINES(PL_formtarget) = 0;
1362 SvCUR_set(PL_formtarget, 0);
1363 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1364 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1365 (void)PerlIO_flush(fp);
3280af22 1366 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1367 }
1368 }
9cbac4c7 1369 /* bad_ofp: */
3280af22 1370 PL_formtarget = PL_bodytarget;
a0d0e21e
LW		 1371 PUTBACK;
1372 return pop_return();
1373}
1374
1375PP(pp_prtf)
1376{
39644a26 1377 dSP; dMARK; dORIGMARK;
a0d0e21e
LW		 1378 GV *gv;
1379 IO *io;
760ac839 1380 PerlIO *fp;
26db47c4 1381 SV *sv;
46fc3d4c 1382 MAGIC *mg;
a0d0e21e 1383
533c011a 1384 if (PL_op->op_flags & OPf_STACKED)
a0d0e21e
LW		 1385 gv = (GV*)*++MARK;
1386 else
3280af22 1387 gv = PL_defoutgv;
46fc3d4c 1388
14befaf4 1389 if ((mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) {
46fc3d4c 1390 if (MARK == ORIGMARK) {
4352c267 1391 MEXTEND(SP, 1);
46fc3d4c 1392 ++MARK;
1393 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1394 ++SP;
1395 }
1396 PUSHMARK(MARK - 1);
33c27489 1397 *MARK = SvTIED_obj((SV*)gv, mg);
46fc3d4c 1398 PUTBACK;
1399 ENTER;
864dbfa3 1400 call_method("PRINTF", G_SCALAR);
46fc3d4c 1401 LEAVE;
1402 SPAGAIN;
1403 MARK = ORIGMARK + 1;
1404 *MARK = *SP;
1405 SP = MARK;
1406 RETURN;
1407 }
1408
26db47c4 1409 sv = NEWSV(0,0);
a0d0e21e 1410 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1411 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1412 report_evil_fh(gv, io, PL_op->op_type);
748a9306 1413 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 1414 goto just_say_no;
1415 }
1416 else if (!(fp = IoOFP(io))) {
599cee73 1417 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
2dd78f96 1418 /* integrate with report_evil_fh()? */
cb50131a 1419 if (IoIFP(io)) {
2dd78f96
JH		 1420 char *name = NULL;
1421 if (isGV(gv)) {
1422 gv_efullname4(sv, gv, Nullch, FALSE);
1423 name = SvPV_nolen(sv);
1424 }
1425 if (name && *name)
1426 Perl_warner(aTHX_ WARN_IO,
1427 "Filehandle %s opened only for input", name);
1428 else
1429 Perl_warner(aTHX_ WARN_IO,
1430 "Filehandle opened only for input");
cb50131a 1431 }
599cee73 1432 else if (ckWARN(WARN_CLOSED))
bc37a18f 1433 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1434 }
748a9306 1435 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
a0d0e21e
LW		 1436 goto just_say_no;
1437 }
1438 else {
1439 do_sprintf(sv, SP - MARK, MARK + 1);
1440 if (!do_print(sv, fp))
1441 goto just_say_no;
1442
1443 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1444 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1445 goto just_say_no;
1446 }
1447 SvREFCNT_dec(sv);
1448 SP = ORIGMARK;
3280af22 1449 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1450 RETURN;
1451
1452 just_say_no:
1453 SvREFCNT_dec(sv);
1454 SP = ORIGMARK;
3280af22 1455 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1456 RETURN;
1457}
1458
c07a80fd 1459PP(pp_sysopen)
1460{
39644a26 1461 dSP;
c07a80fd 1462 GV *gv;
c07a80fd 1463 SV *sv;
1464 char *tmps;
1465 STRLEN len;
1466 int mode, perm;
1467
1468 if (MAXARG > 3)
1469 perm = POPi;
1470 else
1471 perm = 0666;
1472 mode = POPi;
1473 sv = POPs;
1474 gv = (GV *)POPs;
1475
4592e6ca
NIS		 1476 /* Need TIEHANDLE method ? */
1477
c07a80fd 1478 tmps = SvPV(sv, len);
1479 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1480 IoLINES(GvIOp(gv)) = 0;
3280af22 1481 PUSHs(&PL_sv_yes);
c07a80fd 1482 }
1483 else {
3280af22 1484 PUSHs(&PL_sv_undef);
c07a80fd 1485 }
1486 RETURN;
1487}
1488
a0d0e21e
LW		 1489PP(pp_sysread)
1490{
39644a26 1491 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1492 int offset;
1493 GV *gv;
1494 IO *io;
1495 char *buffer;
5b54f415 1496 SSize_t length;
eb5c063a 1497 SSize_t count;
1e422769 1498 Sock_size_t bufsize;
748a9306 1499 SV *bufsv;
a0d0e21e 1500 STRLEN blen;
2ae324a7 1501 MAGIC *mg;
eb5c063a
NIS		 1502 int fp_utf8;
1503 Size_t got = 0;
1504 Size_t wanted;
a0d0e21e
LW		 1505
1506 gv = (GV*)*++MARK;
533c011a 1507 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD) &&
14befaf4 1508 (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar)))
137443ea 1509 {
2ae324a7 1510 SV *sv;
1511
1512 PUSHMARK(MARK-1);
33c27489 1513 *MARK = SvTIED_obj((SV*)gv, mg);
2ae324a7 1514 ENTER;
864dbfa3 1515 call_method("READ", G_SCALAR);
2ae324a7 1516 LEAVE;
1517 SPAGAIN;
1518 sv = POPs;
1519 SP = ORIGMARK;
1520 PUSHs(sv);
1521 RETURN;
1522 }
1523
a0d0e21e
LW		 1524 if (!gv)
1525 goto say_undef;
748a9306 1526 bufsv = *++MARK;
ff68c719 1527 if (! SvOK(bufsv))
1528 sv_setpvn(bufsv, "", 0);
a0d0e21e 1529 length = SvIVx(*++MARK);
748a9306 1530 SETERRNO(0,0);
a0d0e21e
LW		 1531 if (MARK < SP)
1532 offset = SvIVx(*++MARK);
1533 else
1534 offset = 0;
1535 io = GvIO(gv);
1536 if (!io || !IoIFP(io))
1537 goto say_undef;
0064a8a9 1538 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1539 buffer = SvPVutf8_force(bufsv, blen);
eb5c063a
NIS		 1540 /* UTF8 may not have been set if they are all low bytes */
1541 SvUTF8_on(bufsv);
7d59b7e4
NIS		 1542 }
1543 else {
1544 buffer = SvPV_force(bufsv, blen);
1545 }
1546 if (length < 0)
1547 DIE(aTHX_ "Negative length");
eb5c063a 1548 wanted = length;
7d59b7e4 1549
a0d0e21e 1550#ifdef HAS_SOCKET
533c011a 1551 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1552 char namebuf[MAXPATHLEN];
eec2d3df 1553#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE)
490ab354
JH		 1554 bufsize = sizeof (struct sockaddr_in);
1555#else
46fc3d4c 1556 bufsize = sizeof namebuf;
490ab354 1557#endif
abf95952
IZ		 1558#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1559 if (bufsize >= 256)
1560 bufsize = 255;
1561#endif
748a9306 1562 buffer = SvGROW(bufsv, length+1);
bbce6d69 1563 /* 'offset' means 'flags' here */
eb5c063a 1564 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
46fc3d4c 1565 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1566 if (count < 0)
a0d0e21e 1567 RETPUSHUNDEF;
4107cc59
OF		 1568#ifdef EPOC
1569 /* Bogus return without padding */
1570 bufsize = sizeof (struct sockaddr_in);
1571#endif
eb5c063a 1572 SvCUR_set(bufsv, count);
748a9306
LW		 1573 *SvEND(bufsv) = '\0';
1574 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1575 if (fp_utf8)
1576 SvUTF8_on(bufsv);
748a9306 1577 SvSETMAGIC(bufsv);
aac0dd9a 1578 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1579 if (!(IoFLAGS(io) & IOf_UNTAINT))
1580 SvTAINTED_on(bufsv);
a0d0e21e 1581 SP = ORIGMARK;
46fc3d4c 1582 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1583 PUSHs(TARG);
1584 RETURN;
1585 }
1586#else
911d147d 1587 if (PL_op->op_type == OP_RECV)
cea2e8a9 1588 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1589#endif
eb5c063a
NIS		 1590 if (DO_UTF8(bufsv)) {
1591 /* offset adjust in characters not bytes */
1592 blen = sv_len_utf8(bufsv);
7d59b7e4 1593 }
bbce6d69 1594 if (offset < 0) {
1595 if (-offset > blen)
cea2e8a9 1596 DIE(aTHX_ "Offset outside string");
bbce6d69 1597 offset += blen;
1598 }
eb5c063a
NIS		 1599 if (DO_UTF8(bufsv)) {
1600 /* convert offset-as-chars to offset-as-bytes */
1601 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1602 }
1603 more_bytes:
cd52b7b2 1604 bufsize = SvCUR(bufsv);
eb5c063a 1605 buffer = SvGROW(bufsv, length+offset+1);
cd52b7b2 1606 if (offset > bufsize) { /* Zero any newly allocated space */
1607 Zero(buffer+bufsize, offset-bufsize, char);
1608 }
eb5c063a
NIS		 1609 buffer = buffer + offset;
1610
533c011a 1611 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1612#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1613 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1614 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1615 buffer, length, 0);
a7092146
GS		 1616 }
1617 else
1618#endif
1619 {
eb5c063a
NIS		 1620 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1621 buffer, length);
a7092146 1622 }
a0d0e21e
LW		 1623 }
1624 else
1625#ifdef HAS_SOCKET__bad_code_maybe
50952442 1626 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1627 char namebuf[MAXPATHLEN];
490ab354
JH		 1628#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1629 bufsize = sizeof (struct sockaddr_in);
1630#else
46fc3d4c 1631 bufsize = sizeof namebuf;
490ab354 1632#endif
eb5c063a 1633 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1634 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1635 }
1636 else
1637#endif
3b02c43c 1638 {
eb5c063a
NIS		 1639 count = PerlIO_read(IoIFP(io), buffer, length);
1640 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1641 if (count == 0 && PerlIO_error(IoIFP(io)))
1642 count = -1;
3b02c43c 1643 }
eb5c063a 1644 if (count < 0) {
a00b5bd3 1645 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
af8c498a 1646 {
2dd78f96
JH		 1647 /* integrate with report_evil_fh()? */
1648 char *name = NULL;
1649 if (isGV(gv)) {
1650 SV* sv = sv_newmortal();
1651 gv_efullname4(sv, gv, Nullch, FALSE);
1652 name = SvPV_nolen(sv);
1653 }
1654 if (name && *name)
1655 Perl_warner(aTHX_ WARN_IO,
1656 "Filehandle %s opened only for output", name);
1657 else
1658 Perl_warner(aTHX_ WARN_IO,
1659 "Filehandle opened only for output");
af8c498a 1660 }
a0d0e21e 1661 goto say_undef;
af8c498a 1662 }
eb5c063a 1663 SvCUR_set(bufsv, count+(buffer - SvPVX(bufsv)));
748a9306
LW		 1664 *SvEND(bufsv) = '\0';
1665 (void)SvPOK_only(bufsv);
0064a8a9 1666 if (fp_utf8 && !IN_BYTES) {
eb5c063a
NIS		 1667 /* Look at utf8 we got back and count the characters */
1668 char *bend = buffer + count;
1669 while (buffer < bend) {
1670 STRLEN skip = UTF8SKIP(buffer);
1671 if (buffer+skip > bend) {
1672 /* partial character - try for rest of it */
1673 length = skip - (bend-buffer);
1674 offset = bend - SvPVX(bufsv);
1675 goto more_bytes;
1676 }
1677 else {
1678 got++;
1679 buffer += skip;
1680 }
1681 }
1682 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1683 provided amount read (count) was what was requested (length)
1684 */
1685 if (got < wanted && count == length) {
1686 length = (wanted-got);
1687 offset = bend - SvPVX(bufsv);
1688 goto more_bytes;
1689 }
1690 /* return value is character count */
1691 count = got;
1692 SvUTF8_on(bufsv);
1693 }
748a9306 1694 SvSETMAGIC(bufsv);
aac0dd9a 1695 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1696 if (!(IoFLAGS(io) & IOf_UNTAINT))
1697 SvTAINTED_on(bufsv);
a0d0e21e 1698 SP = ORIGMARK;
eb5c063a 1699 PUSHi(count);
a0d0e21e
LW		 1700 RETURN;
1701
1702 say_undef:
1703 SP = ORIGMARK;
1704 RETPUSHUNDEF;
1705}
1706
1707PP(pp_syswrite)
1708{
39644a26 1709 dSP;
092bebab
JH		 1710 int items = (SP - PL_stack_base) - TOPMARK;
1711 if (items == 2) {
9f089d78 1712 SV *sv;
092bebab 1713 EXTEND(SP, 1);
9f089d78
SB		 1714 sv = sv_2mortal(newSViv(sv_len(*SP)));
1715 PUSHs(sv);
092bebab
JH		 1716 PUTBACK;
1717 }
cea2e8a9 1718 return pp_send();
a0d0e21e
LW		 1719}
1720
1721PP(pp_send)
1722{
39644a26 1723 dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 1724 GV *gv;
1725 IO *io;
748a9306 1726 SV *bufsv;
a0d0e21e 1727 char *buffer;
8c99d73e
GS		 1728 Size_t length;
1729 SSize_t retval;
a0d0e21e 1730 STRLEN blen;
1d603a67 1731 MAGIC *mg;
a0d0e21e
LW		 1732
1733 gv = (GV*)*++MARK;
14befaf4
DM		 1734 if (PL_op->op_type == OP_SYSWRITE
1735 && (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar)))
1736 {
1d603a67
GB		 1737 SV *sv;
1738
1739 PUSHMARK(MARK-1);
33c27489 1740 *MARK = SvTIED_obj((SV*)gv, mg);
1d603a67 1741 ENTER;
864dbfa3 1742 call_method("WRITE", G_SCALAR);
1d603a67
GB		 1743 LEAVE;
1744 SPAGAIN;
1745 sv = POPs;
1746 SP = ORIGMARK;
1747 PUSHs(sv);
1748 RETURN;
1749 }
a0d0e21e
LW		 1750 if (!gv)
1751 goto say_undef;
748a9306 1752 bufsv = *++MARK;
8c99d73e 1753#if Size_t_size > IVSIZE
3c001241 1754 length = (Size_t)SvNVx(*++MARK);
146174a9 1755#else
3c001241 1756 length = (Size_t)SvIVx(*++MARK);
146174a9 1757#endif
3c001241 1758 if ((SSize_t)length < 0)
cea2e8a9 1759 DIE(aTHX_ "Negative length");
748a9306 1760 SETERRNO(0,0);
a0d0e21e
LW		 1761 io = GvIO(gv);
1762 if (!io || !IoIFP(io)) {
8c99d73e 1763 retval = -1;
bc37a18f
RG		 1764 if (ckWARN(WARN_CLOSED))
1765 report_evil_fh(gv, io, PL_op->op_type);
7d59b7e4
NIS		 1766 goto say_undef;
1767 }
1768
1769 if (PerlIO_isutf8(IoIFP(io))) {
1770 buffer = SvPVutf8(bufsv, blen);
a0d0e21e 1771 }
7d59b7e4
NIS		 1772 else {
1773 if (DO_UTF8(bufsv))
1774 sv_utf8_downgrade(bufsv, FALSE);
1775 buffer = SvPV(bufsv, blen);
1776 }
1777
1778 if (PL_op->op_type == OP_SYSWRITE) {
1779 IV offset;
1780 if (DO_UTF8(bufsv)) {
1781 /* length and offset are in chars */
1782 blen = sv_len_utf8(bufsv);
1783 }
bbce6d69 1784 if (MARK < SP) {
a0d0e21e 1785 offset = SvIVx(*++MARK);
bbce6d69 1786 if (offset < 0) {
1787 if (-offset > blen)
cea2e8a9 1788 DIE(aTHX_ "Offset outside string");
bbce6d69 1789 offset += blen;
fb73857a 1790 } else if (offset >= blen && blen > 0)
cea2e8a9 1791 DIE(aTHX_ "Offset outside string");
bbce6d69 1792 } else
a0d0e21e
LW		 1793 offset = 0;
1794 if (length > blen - offset)
1795 length = blen - offset;
7d59b7e4 1796 if (DO_UTF8(bufsv)) {
c8d31a35 1797 buffer = (char*)utf8_hop((U8 *)buffer, offset);
7d59b7e4
NIS		 1798 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1799 }
1800 else {
1801 buffer = buffer+offset;
1802 }
a7092146 1803#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1804 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1805 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1806 buffer, length, 0);
a7092146
GS		 1807 }
1808 else
1809#endif
1810 {
94e4c244 1811 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1812 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1813 buffer, length);
a7092146 1814 }
a0d0e21e
LW		 1815 }
1816#ifdef HAS_SOCKET
1817 else if (SP > MARK) {
1818 char *sockbuf;
1819 STRLEN mlen;
1820 sockbuf = SvPVx(*++MARK, mlen);
7d59b7e4 1821 /* length is really flags */
8c99d73e
GS		 1822 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1823 length, (struct sockaddr *)sockbuf, mlen);
a0d0e21e
LW		 1824 }
1825 else
7d59b7e4 1826 /* length is really flags */
8c99d73e 1827 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
a0d0e21e
LW		 1828#else
1829 else
cea2e8a9 1830 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1831#endif
8c99d73e 1832 if (retval < 0)
a0d0e21e
LW		 1833 goto say_undef;
1834 SP = ORIGMARK;
8c99d73e
GS		 1835#if Size_t_size > IVSIZE
1836 PUSHn(retval);
1837#else
1838 PUSHi(retval);
1839#endif
a0d0e21e
LW		 1840 RETURN;
1841
1842 say_undef:
1843 SP = ORIGMARK;
1844 RETPUSHUNDEF;
1845}
1846
1847PP(pp_recv)
1848{
cea2e8a9 1849 return pp_sysread();
a0d0e21e
LW		 1850}
1851
1852PP(pp_eof)
1853{
39644a26 1854 dSP;
a0d0e21e 1855 GV *gv;
4592e6ca 1856 MAGIC *mg;
a0d0e21e 1857
32da55ab 1858 if (MAXARG == 0) {
146174a9
CB		 1859 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1860 IO *io;
1861 gv = PL_last_in_gv = PL_argvgv;
1862 io = GvIO(gv);
1863 if (io && !IoIFP(io)) {
1864 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1865 IoLINES(io) = 0;
1866 IoFLAGS(io) &= ~IOf_START;
1867 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
1868 sv_setpvn(GvSV(gv), "-", 1);
1869 SvSETMAGIC(GvSV(gv));
1870 }
1871 else if (!nextargv(gv))
1872 RETPUSHYES;
1873 }
1874 }
1875 else
1876 gv = PL_last_in_gv; /* eof */
1877 }
a0d0e21e 1878 else
146174a9 1879 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 1880
14befaf4 1881 if (gv && (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) {
4592e6ca
NIS		 1882 PUSHMARK(SP);
1883 XPUSHs(SvTIED_obj((SV*)gv, mg));
1884 PUTBACK;
1885 ENTER;
864dbfa3 1886 call_method("EOF", G_SCALAR);
4592e6ca
NIS		 1887 LEAVE;
1888 SPAGAIN;
1889 RETURN;
1890 }
1891
54310121 1892 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 1893 RETURN;
1894}
1895
1896PP(pp_tell)
1897{
39644a26 1898 dSP; dTARGET;
301e8125 1899 GV *gv;
4592e6ca 1900 MAGIC *mg;
a0d0e21e 1901
32da55ab 1902 if (MAXARG == 0)
3280af22 1903 gv = PL_last_in_gv;
a0d0e21e 1904 else
3280af22 1905 gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 1906
14befaf4 1907 if (gv && (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) {
4592e6ca
NIS		 1908 PUSHMARK(SP);
1909 XPUSHs(SvTIED_obj((SV*)gv, mg));
1910 PUTBACK;
1911 ENTER;
864dbfa3 1912 call_method("TELL", G_SCALAR);
4592e6ca
NIS		 1913 LEAVE;
1914 SPAGAIN;
1915 RETURN;
1916 }
1917
146174a9
CB		 1918#if LSEEKSIZE > IVSIZE
1919 PUSHn( do_tell(gv) );
1920#else
a0d0e21e 1921 PUSHi( do_tell(gv) );
146174a9 1922#endif
a0d0e21e
LW		 1923 RETURN;
1924}
1925
1926PP(pp_seek)
1927{
cea2e8a9 1928 return pp_sysseek();
137443ea 1929}
1930
1931PP(pp_sysseek)
1932{
39644a26 1933 dSP;
a0d0e21e
LW		 1934 GV *gv;
1935 int whence = POPi;
146174a9
CB		 1936#if LSEEKSIZE > IVSIZE
1937 Off_t offset = (Off_t)SvNVx(POPs);
1938#else
d9b3e12d 1939 Off_t offset = (Off_t)SvIVx(POPs);
146174a9 1940#endif
4592e6ca 1941 MAGIC *mg;
a0d0e21e 1942
3280af22 1943 gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 1944
14befaf4 1945 if (gv && (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) {
4592e6ca
NIS		 1946 PUSHMARK(SP);
1947 XPUSHs(SvTIED_obj((SV*)gv, mg));
cb50131a
CB		 1948#if LSEEKSIZE > IVSIZE
1949 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
1950#else
b448e4fe 1951 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 1952#endif
b448e4fe 1953 XPUSHs(sv_2mortal(newSViv(whence)));
4592e6ca
NIS		 1954 PUTBACK;
1955 ENTER;
864dbfa3 1956 call_method("SEEK", G_SCALAR);
4592e6ca
NIS		 1957 LEAVE;
1958 SPAGAIN;
1959 RETURN;
1960 }
1961
533c011a 1962 if (PL_op->op_type == OP_SEEK)
8903cb82 1963 PUSHs(boolSV(do_seek(gv, offset, whence)));
1964 else {
b448e4fe
JH		 1965 Off_t sought = do_sysseek(gv, offset, whence);
1966 if (sought < 0)
146174a9
CB		 1967 PUSHs(&PL_sv_undef);
1968 else {
b448e4fe 1969 SV* sv = sought ?
146174a9 1970#if LSEEKSIZE > IVSIZE
b448e4fe 1971 newSVnv((NV)sought)
146174a9 1972#else
b448e4fe 1973 newSViv(sought)
146174a9
CB		 1974#endif
1975 : newSVpvn(zero_but_true, ZBTLEN);
1976 PUSHs(sv_2mortal(sv));
1977 }
8903cb82 1978 }
a0d0e21e
LW		 1979 RETURN;
1980}
1981
1982PP(pp_truncate)
1983{
39644a26 1984 dSP;
8c99d73e
GS		 1985 /* There seems to be no consensus on the length type of truncate()
1986 * and ftruncate(), both off_t and size_t have supporters. In
1987 * general one would think that when using large files, off_t is
1988 * at least as wide as size_t, so using an off_t should be okay. */
1989 /* XXX Configure probe for the length type of *truncate() needed XXX */
1990 Off_t len;
a0d0e21e 1991
8c99d73e
GS		 1992#if Size_t_size > IVSIZE
1993 len = (Off_t)POPn;
1994#else
1995 len = (Off_t)POPi;
1996#endif
1997 /* Checking for length < 0 is problematic as the type might or
301e8125 1998 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 1999 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2000 SETERRNO(0,0);
5d94fbed 2001#if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) || defined(F_FREESP)
d05c1ba0
JH		 2002 {
2003 STRLEN n_a;
2004 int result = 1;
2005 GV *tmpgv;
2006
2007 if (PL_op->op_flags & OPf_SPECIAL) {
2008 tmpgv = gv_fetchpv(POPpx, FALSE, SVt_PVIO);
2009
2010 do_ftruncate:
2011 TAINT_PROPER("truncate");
2012 if (!GvIO(tmpgv) || !IoIFP(GvIOp(tmpgv)))
2013 result = 0;
2014 else {
2015 PerlIO_flush(IoIFP(GvIOp(tmpgv)));
cbdc8872 2016#ifdef HAS_TRUNCATE
d05c1ba0 2017 if (ftruncate(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
301e8125 2018#else
d05c1ba0 2019 if (my_chsize(PerlIO_fileno(IoIFP(GvIOn(tmpgv))), len) < 0)
cbdc8872 2020#endif
d05c1ba0
JH		 2021 result = 0;
2022 }
cbdc8872 2023 }
d05c1ba0
JH		 2024 else {
2025 SV *sv = POPs;
2026 char *name;
2027
2028 if (SvTYPE(sv) == SVt_PVGV) {
2029 tmpgv = (GV*)sv; /* *main::FRED for example */
2030 goto do_ftruncate;
2031 }
2032 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2033 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2034 goto do_ftruncate;
2035 }
1e422769 2036
d05c1ba0
JH		 2037 name = SvPV(sv, n_a);
2038 TAINT_PROPER("truncate");
cbdc8872 2039#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2040 if (truncate(name, len) < 0)
2041 result = 0;
cbdc8872 2042#else
d05c1ba0
JH		 2043 {
2044 int tmpfd;
2045
2046 if ((tmpfd = PerlLIO_open(name, O_RDWR)) < 0)
cbdc8872 2047 result = 0;
d05c1ba0
JH		 2048 else {
2049 if (my_chsize(tmpfd, len) < 0)
2050 result = 0;
2051 PerlLIO_close(tmpfd);
2052 }
cbdc8872 2053 }
a0d0e21e 2054#endif
d05c1ba0 2055 }
a0d0e21e 2056
d05c1ba0
JH		 2057 if (result)
2058 RETPUSHYES;
2059 if (!errno)
2060 SETERRNO(EBADF,RMS$_IFI);
2061 RETPUSHUNDEF;
2062 }
a0d0e21e 2063#else
cea2e8a9 2064 DIE(aTHX_ "truncate not implemented");
a0d0e21e
LW		 2065#endif
2066}
2067
2068PP(pp_fcntl)
2069{
cea2e8a9 2070 return pp_ioctl();
a0d0e21e
LW		 2071}
2072
2073PP(pp_ioctl)
2074{
39644a26 2075 dSP; dTARGET;
748a9306 2076 SV *argsv = POPs;
3bb7c1b4 2077 unsigned int func = POPu;
533c011a 2078 int optype = PL_op->op_type;
a0d0e21e 2079 char *s;
324aa91a 2080 IV retval;
a0d0e21e 2081 GV *gv = (GV*)POPs;
c289d2f7 2082 IO *io = gv ? GvIOn(gv) : 0;
a0d0e21e 2083
748a9306 2084 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2085 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2086 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2087 SETERRNO(EBADF,RMS$_IFI); /* well, sort of... */
a0d0e21e
LW		 2088 RETPUSHUNDEF;
2089 }
2090
748a9306 2091 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2092 STRLEN len;
324aa91a 2093 STRLEN need;
748a9306 2094 s = SvPV_force(argsv, len);
324aa91a
HF		 2095 need = IOCPARM_LEN(func);
2096 if (len < need) {
2097 s = Sv_Grow(argsv, need + 1);
2098 SvCUR_set(argsv, need);
a0d0e21e
LW		 2099 }
2100
748a9306 2101 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2102 }
2103 else {
748a9306 2104 retval = SvIV(argsv);
c529f79d 2105 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2106 }
2107
2108 TAINT_PROPER(optype == OP_IOCTL ? "ioctl" : "fcntl");
2109
2110 if (optype == OP_IOCTL)
2111#ifdef HAS_IOCTL
76e3520e 2112 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2113#else
cea2e8a9 2114 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2115#endif
2116 else
55497cff 2117#ifdef HAS_FCNTL
2118#if defined(OS2) && defined(__EMX__)
760ac839 2119 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2120#else
760ac839 2121 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2122#endif
55497cff 2123#else
cea2e8a9 2124 DIE(aTHX_ "fcntl is not implemented");
a0d0e21e
LW		 2125#endif
2126
748a9306
LW		 2127 if (SvPOK(argsv)) {
2128 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2129 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
22c35a8c 2130 PL_op_name[optype]);
748a9306
LW		 2131 s[SvCUR(argsv)] = 0; /* put our null back */
2132 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2133 }
2134
2135 if (retval == -1)
2136 RETPUSHUNDEF;
2137 if (retval != 0) {
2138 PUSHi(retval);
2139 }
2140 else {
8903cb82 2141 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e
LW		 2142 }
2143 RETURN;
2144}
2145
2146PP(pp_flock)
2147{
39644a26 2148 dSP; dTARGET;
a0d0e21e
LW		 2149 I32 value;
2150 int argtype;
2151 GV *gv;
bc37a18f 2152 IO *io = NULL;
760ac839 2153 PerlIO *fp;
16d20bd9 2154
ff68c719 2155#ifdef FLOCK
a0d0e21e 2156 argtype = POPi;
32da55ab 2157 if (MAXARG == 0)
3280af22 2158 gv = PL_last_in_gv;
a0d0e21e
LW		 2159 else
2160 gv = (GV*)POPs;
bc37a18f
RG		 2161 if (gv && (io = GvIO(gv)))
2162 fp = IoIFP(io);
2163 else {
a0d0e21e 2164 fp = Nullfp;
bc37a18f
RG		 2165 io = NULL;
2166 }
a0d0e21e 2167 if (fp) {
68dc0745 2168 (void)PerlIO_flush(fp);
76e3520e 2169 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2170 }
cb50131a 2171 else {
bc37a18f
RG		 2172 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2173 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2174 value = 0;
cb50131a 2175 SETERRNO(EBADF,RMS$_IFI);
cb50131a 2176 }
a0d0e21e
LW		 2177 PUSHi(value);
2178 RETURN;
2179#else
cea2e8a9 2180 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2181#endif
2182}
2183
2184/* Sockets. */
2185
2186PP(pp_socket)
2187{
39644a26 2188 dSP;
a0d0e21e
LW		 2189#ifdef HAS_SOCKET
2190 GV *gv;
2191 register IO *io;
2192 int protocol = POPi;
2193 int type = POPi;
2194 int domain = POPi;
2195 int fd;
2196
2197 gv = (GV*)POPs;
c289d2f7 2198 io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2199
c289d2f7
JH		 2200 if (!gv || !io) {
2201 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2202 report_evil_fh(gv, io, PL_op->op_type);
2203 if (IoIFP(io))
2204 do_close(gv, FALSE);
748a9306 2205 SETERRNO(EBADF,LIB$_INVARG);
a0d0e21e
LW		 2206 RETPUSHUNDEF;
2207 }
2208
57171420
BS		 2209 if (IoIFP(io))
2210 do_close(gv, FALSE);
2211
a0d0e21e 2212 TAINT_PROPER("socket");
6ad3d225 2213 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2214 if (fd < 0)
2215 RETPUSHUNDEF;
760ac839
LW		 2216 IoIFP(io) = PerlIO_fdopen(fd, "r"); /* stdio gets confused about sockets */
2217 IoOFP(io) = PerlIO_fdopen(fd, "w");
50952442 2218 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2219 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2220 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2221 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2222 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2223 RETPUSHUNDEF;
2224 }
8d2a6795
GS		 2225#if defined(HAS_FCNTL) && defined(F_SETFD)
2226 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2227#endif
a0d0e21e 2228
d5ff79b3
OF		 2229#ifdef EPOC
2230 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2231#endif
2232
a0d0e21e
LW		 2233 RETPUSHYES;
2234#else
cea2e8a9 2235 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2236#endif
2237}
2238
2239PP(pp_sockpair)
2240{
39644a26 2241 dSP;
a0d0e21e
LW		 2242#ifdef HAS_SOCKETPAIR
2243 GV *gv1;
2244 GV *gv2;
2245 register IO *io1;
2246 register IO *io2;
2247 int protocol = POPi;
2248 int type = POPi;
2249 int domain = POPi;
2250 int fd[2];
2251
2252 gv2 = (GV*)POPs;
2253 gv1 = (GV*)POPs;
c289d2f7
JH		 2254 io1 = gv1 ? GvIOn(gv1) : NULL;
2255 io2 = gv2 ? GvIOn(gv2) : NULL;
2256 if (!gv1 || !gv2 || !io1 || !io2) {
2257 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2258 if (!gv1 || !io1)
2259 report_evil_fh(gv1, io1, PL_op->op_type);
2260 if (!gv2 || !io2)
2261 report_evil_fh(gv1, io2, PL_op->op_type);
2262 }
2263 if (IoIFP(io1))
2264 do_close(gv1, FALSE);
2265 if (IoIFP(io2))
2266 do_close(gv2, FALSE);
a0d0e21e 2267 RETPUSHUNDEF;
c289d2f7 2268 }
a0d0e21e 2269
dc0d0a5f
JH		 2270 if (IoIFP(io1))
2271 do_close(gv1, FALSE);
2272 if (IoIFP(io2))
2273 do_close(gv2, FALSE);
57171420 2274
a0d0e21e 2275 TAINT_PROPER("socketpair");
6ad3d225 2276 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2277 RETPUSHUNDEF;
760ac839
LW		 2278 IoIFP(io1) = PerlIO_fdopen(fd[0], "r");
2279 IoOFP(io1) = PerlIO_fdopen(fd[0], "w");
50952442 2280 IoTYPE(io1) = IoTYPE_SOCKET;
760ac839
LW		 2281 IoIFP(io2) = PerlIO_fdopen(fd[1], "r");
2282 IoOFP(io2) = PerlIO_fdopen(fd[1], "w");
50952442 2283 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2284 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2285 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2286 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2287 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2288 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2289 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2290 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2291 RETPUSHUNDEF;
2292 }
8d2a6795
GS		 2293#if defined(HAS_FCNTL) && defined(F_SETFD)
2294 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2295 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2296#endif
a0d0e21e
LW		 2297
2298 RETPUSHYES;
2299#else
cea2e8a9 2300 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2301#endif
2302}
2303
2304PP(pp_bind)
2305{
39644a26 2306 dSP;
a0d0e21e 2307#ifdef HAS_SOCKET
eec2d3df
GS		 2308#ifdef MPE /* Requires PRIV mode to bind() to ports < 1024 */
2309 extern GETPRIVMODE();
2310 extern GETUSERMODE();
2311#endif
748a9306 2312 SV *addrsv = POPs;
a0d0e21e
LW		 2313 char *addr;
2314 GV *gv = (GV*)POPs;
2315 register IO *io = GvIOn(gv);
2316 STRLEN len;
eec2d3df
GS		 2317 int bind_ok = 0;
2318#ifdef MPE
2319 int mpeprivmode = 0;
2320#endif
a0d0e21e
LW		 2321
2322 if (!io || !IoIFP(io))
2323 goto nuts;
2324
748a9306 2325 addr = SvPV(addrsv, len);
a0d0e21e 2326 TAINT_PROPER("bind");
eec2d3df
GS		 2327#ifdef MPE /* Deal with MPE bind() peculiarities */
2328 if (((struct sockaddr *)addr)->sa_family == AF_INET) {
2329 /* The address *MUST* stupidly be zero. */
2330 ((struct sockaddr_in *)addr)->sin_addr.s_addr = INADDR_ANY;
2331 /* PRIV mode is required to bind() to ports < 1024. */
2332 if (((struct sockaddr_in *)addr)->sin_port < 1024 &&
2333 ((struct sockaddr_in *)addr)->sin_port > 0) {
2334 GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
2335 mpeprivmode = 1;
2336 }
2337 }
2338#endif /* MPE */
2339 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2340 (struct sockaddr *)addr, len) >= 0)
2341 bind_ok = 1;
2342
2343#ifdef MPE /* Switch back to USER mode */
2344 if (mpeprivmode)
2345 GETUSERMODE();
2346#endif /* MPE */
2347
2348 if (bind_ok)
a0d0e21e
LW		 2349 RETPUSHYES;
2350 else
2351 RETPUSHUNDEF;
2352
2353nuts:
599cee73 2354 if (ckWARN(WARN_CLOSED))
bc37a18f 2355 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2356 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2357 RETPUSHUNDEF;
2358#else
cea2e8a9 2359 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2360#endif
2361}
2362
2363PP(pp_connect)
2364{
39644a26 2365 dSP;
a0d0e21e 2366#ifdef HAS_SOCKET
748a9306 2367 SV *addrsv = POPs;
a0d0e21e
LW		 2368 char *addr;
2369 GV *gv = (GV*)POPs;
2370 register IO *io = GvIOn(gv);
2371 STRLEN len;
2372
2373 if (!io || !IoIFP(io))
2374 goto nuts;
2375
748a9306 2376 addr = SvPV(addrsv, len);
a0d0e21e 2377 TAINT_PROPER("connect");
6ad3d225 2378 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2379 RETPUSHYES;
2380 else
2381 RETPUSHUNDEF;
2382
2383nuts:
599cee73 2384 if (ckWARN(WARN_CLOSED))
bc37a18f 2385 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2386 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2387 RETPUSHUNDEF;
2388#else
cea2e8a9 2389 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2390#endif
2391}
2392
2393PP(pp_listen)
2394{
39644a26 2395 dSP;
a0d0e21e
LW		 2396#ifdef HAS_SOCKET
2397 int backlog = POPi;
2398 GV *gv = (GV*)POPs;
c289d2f7 2399 register IO *io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2400
c289d2f7 2401 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2402 goto nuts;
2403
6ad3d225 2404 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2405 RETPUSHYES;
2406 else
2407 RETPUSHUNDEF;
2408
2409nuts:
599cee73 2410 if (ckWARN(WARN_CLOSED))
bc37a18f 2411 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2412 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2413 RETPUSHUNDEF;
2414#else
cea2e8a9 2415 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2416#endif
2417}
2418
2419PP(pp_accept)
2420{
39644a26 2421 dSP; dTARGET;
a0d0e21e
LW		 2422#ifdef HAS_SOCKET
2423 GV *ngv;
2424 GV *ggv;
2425 register IO *nstio;
2426 register IO *gstio;
4633a7c4 2427 struct sockaddr saddr; /* use a struct to avoid alignment problems */
1e422769 2428 Sock_size_t len = sizeof saddr;
a0d0e21e
LW		 2429 int fd;
2430
2431 ggv = (GV*)POPs;
2432 ngv = (GV*)POPs;
2433
2434 if (!ngv)
2435 goto badexit;
2436 if (!ggv)
2437 goto nuts;
2438
2439 gstio = GvIO(ggv);
2440 if (!gstio || !IoIFP(gstio))
2441 goto nuts;
2442
2443 nstio = GvIOn(ngv);
2444 if (IoIFP(nstio))
2445 do_close(ngv, FALSE);
2446
6ad3d225 2447 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *)&saddr, &len);
a0d0e21e
LW		 2448 if (fd < 0)
2449 goto badexit;
760ac839
LW		 2450 IoIFP(nstio) = PerlIO_fdopen(fd, "r");
2451 IoOFP(nstio) = PerlIO_fdopen(fd, "w");
50952442 2452 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2453 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2454 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2455 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2456 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2457 goto badexit;
2458 }
8d2a6795
GS		 2459#if defined(HAS_FCNTL) && defined(F_SETFD)
2460 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2461#endif
a0d0e21e 2462
ed79a026 2463#ifdef EPOC
a9f1f6b0
OF		 2464 len = sizeof saddr; /* EPOC somehow truncates info */
2465 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026
OF		 2466#endif
2467
748a9306 2468 PUSHp((char *)&saddr, len);
a0d0e21e
LW		 2469 RETURN;
2470
2471nuts:
599cee73 2472 if (ckWARN(WARN_CLOSED))
bc37a18f 2473 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
748a9306 2474 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2475
2476badexit:
2477 RETPUSHUNDEF;
2478
2479#else
cea2e8a9 2480 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2481#endif
2482}
2483
2484PP(pp_shutdown)
2485{
39644a26 2486 dSP; dTARGET;
a0d0e21e
LW		 2487#ifdef HAS_SOCKET
2488 int how = POPi;
2489 GV *gv = (GV*)POPs;
2490 register IO *io = GvIOn(gv);
2491
2492 if (!io || !IoIFP(io))
2493 goto nuts;
2494
6ad3d225 2495 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2496 RETURN;
2497
2498nuts:
599cee73 2499 if (ckWARN(WARN_CLOSED))
bc37a18f 2500 report_evil_fh(gv, io, PL_op->op_type);
748a9306 2501 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2502 RETPUSHUNDEF;
2503#else
cea2e8a9 2504 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2505#endif
2506}
2507
2508PP(pp_gsockopt)
2509{
2510#ifdef HAS_SOCKET
cea2e8a9 2511 return pp_ssockopt();
a0d0e21e 2512#else
cea2e8a9 2513 DIE(aTHX_ PL_no_sock_func, "getsockopt");
a0d0e21e
LW		 2514#endif
2515}
2516
2517PP(pp_ssockopt)
2518{
39644a26 2519 dSP;
a0d0e21e 2520#ifdef HAS_SOCKET
533c011a 2521 int optype = PL_op->op_type;
a0d0e21e
LW		 2522 SV *sv;
2523 int fd;
2524 unsigned int optname;
2525 unsigned int lvl;
2526 GV *gv;
2527 register IO *io;
1e422769 2528 Sock_size_t len;
a0d0e21e
LW		 2529
2530 if (optype == OP_GSOCKOPT)
2531 sv = sv_2mortal(NEWSV(22, 257));
2532 else
2533 sv = POPs;
2534 optname = (unsigned int) POPi;
2535 lvl = (unsigned int) POPi;
2536
2537 gv = (GV*)POPs;
2538 io = GvIOn(gv);
2539 if (!io || !IoIFP(io))
2540 goto nuts;
2541
760ac839 2542 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2543 switch (optype) {
2544 case OP_GSOCKOPT:
748a9306 2545 SvGROW(sv, 257);
a0d0e21e 2546 (void)SvPOK_only(sv);
748a9306
LW		 2547 SvCUR_set(sv,256);
2548 *SvEND(sv) ='\0';
1e422769 2549 len = SvCUR(sv);
6ad3d225 2550 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2551 goto nuts2;
1e422769 2552 SvCUR_set(sv, len);
748a9306 2553 *SvEND(sv) ='\0';
a0d0e21e
LW		 2554 PUSHs(sv);
2555 break;
2556 case OP_SSOCKOPT: {
1e422769 2557 char *buf;
2558 int aint;
2559 if (SvPOKp(sv)) {
2d8e6c8d
GS		 2560 STRLEN l;
2561 buf = SvPV(sv, l);
2562 len = l;
1e422769 2563 }
56ee1660 2564 else {
a0d0e21e
LW		 2565 aint = (int)SvIV(sv);
2566 buf = (char*)&aint;
2567 len = sizeof(int);
2568 }
6ad3d225 2569 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2570 goto nuts2;
3280af22 2571 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2572 }
2573 break;
2574 }
2575 RETURN;
2576
2577nuts:
599cee73 2578 if (ckWARN(WARN_CLOSED))
bc37a18f 2579 report_evil_fh(gv, io, optype);
748a9306 2580 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2581nuts2:
2582 RETPUSHUNDEF;
2583
2584#else
cea2e8a9 2585 DIE(aTHX_ PL_no_sock_func, "setsockopt");
a0d0e21e
LW		 2586#endif
2587}
2588
2589PP(pp_getsockname)
2590{
2591#ifdef HAS_SOCKET
cea2e8a9 2592 return pp_getpeername();
a0d0e21e 2593#else
cea2e8a9 2594 DIE(aTHX_ PL_no_sock_func, "getsockname");
a0d0e21e
LW		 2595#endif
2596}
2597
2598PP(pp_getpeername)
2599{
39644a26 2600 dSP;
a0d0e21e 2601#ifdef HAS_SOCKET
533c011a 2602 int optype = PL_op->op_type;
a0d0e21e
LW		 2603 SV *sv;
2604 int fd;
2605 GV *gv = (GV*)POPs;
2606 register IO *io = GvIOn(gv);
1e422769 2607 Sock_size_t len;
a0d0e21e
LW		 2608
2609 if (!io || !IoIFP(io))
2610 goto nuts;
2611
2612 sv = sv_2mortal(NEWSV(22, 257));
748a9306 2613 (void)SvPOK_only(sv);
1e422769 2614 len = 256;
2615 SvCUR_set(sv, len);
748a9306 2616 *SvEND(sv) ='\0';
760ac839 2617 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2618 switch (optype) {
2619 case OP_GETSOCKNAME:
6ad3d225 2620 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2621 goto nuts2;
2622 break;
2623 case OP_GETPEERNAME:
6ad3d225 2624 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2625 goto nuts2;
490ab354
JH		 2626#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2627 {
2628 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";
2629 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2630 if (((struct sockaddr *)SvPVX(sv))->sa_family == AF_INET &&
2631 !memcmp((char *)SvPVX(sv) + sizeof(u_short), nowhere,
2632 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2633 goto nuts2;
490ab354
JH		 2634 }
2635 }
2636#endif
a0d0e21e
LW		 2637 break;
2638 }
13826f2c
CS		 2639#ifdef BOGUS_GETNAME_RETURN
2640 /* Interactive Unix, getpeername() and getsockname()
2641 does not return valid namelen */
1e422769 2642 if (len == BOGUS_GETNAME_RETURN)
2643 len = sizeof(struct sockaddr);
13826f2c 2644#endif
1e422769 2645 SvCUR_set(sv, len);
748a9306 2646 *SvEND(sv) ='\0';
a0d0e21e
LW		 2647 PUSHs(sv);
2648 RETURN;
2649
2650nuts:
599cee73 2651 if (ckWARN(WARN_CLOSED))
bc37a18f 2652 report_evil_fh(gv, io, optype);
748a9306 2653 SETERRNO(EBADF,SS$_IVCHAN);
a0d0e21e
LW		 2654nuts2:
2655 RETPUSHUNDEF;
2656
2657#else
cea2e8a9 2658 DIE(aTHX_ PL_no_sock_func, "getpeername");
a0d0e21e
LW		 2659#endif
2660}
2661
2662/* Stat calls. */
2663
2664PP(pp_lstat)
2665{
cea2e8a9 2666 return pp_stat();
a0d0e21e
LW		 2667}
2668
2669PP(pp_stat)
2670{
39644a26 2671 dSP;
2dd78f96 2672 GV *gv;
54310121 2673 I32 gimme;
a0d0e21e 2674 I32 max = 13;
2d8e6c8d 2675 STRLEN n_a;
a0d0e21e 2676
533c011a 2677 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2678 gv = cGVOP_gv;
8a4e5b40
DD		 2679 if (PL_op->op_type == OP_LSTAT) {
2680 if (PL_laststype != OP_LSTAT)
2681 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2682 if (ckWARN(WARN_IO) && gv != PL_defgv)
2683 Perl_warner(aTHX_ WARN_IO,
2dd78f96 2684 "lstat() on filehandle %s", GvENAME(gv));
8a4e5b40
DD		 2685 /* Perl_my_lstat (-l) croak's on filehandle, why warn here? */
2686 }
2687
748a9306 2688 do_fstat:
2dd78f96 2689 if (gv != PL_defgv) {
3280af22 2690 PL_laststype = OP_STAT;
2dd78f96 2691 PL_statgv = gv;
3280af22 2692 sv_setpv(PL_statname, "");
2dd78f96
JH		 2693 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2694 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
a0d0e21e 2695 }
9ddeeac9 2696 if (PL_laststatval < 0) {
2dd78f96
JH		 2697 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2698 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2699 max = 0;
9ddeeac9 2700 }
a0d0e21e
LW		 2701 }
2702 else {
748a9306
LW		 2703 SV* sv = POPs;
2704 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2705 gv = (GV*)sv;
748a9306
LW		 2706 goto do_fstat;
2707 }
2708 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 2709 gv = (GV*)SvRV(sv);
748a9306
LW		 2710 goto do_fstat;
2711 }
2d8e6c8d 2712 sv_setpv(PL_statname, SvPV(sv,n_a));
3280af22 2713 PL_statgv = Nullgv;
a0d0e21e 2714#ifdef HAS_LSTAT
533c011a
NIS		 2715 PL_laststype = PL_op->op_type;
2716 if (PL_op->op_type == OP_LSTAT)
2d8e6c8d 2717 PL_laststatval = PerlLIO_lstat(SvPV(PL_statname, n_a), &PL_statcache);
a0d0e21e
LW		 2718 else
2719#endif
2d8e6c8d 2720 PL_laststatval = PerlLIO_stat(SvPV(PL_statname, n_a), &PL_statcache);
3280af22 2721 if (PL_laststatval < 0) {
2d8e6c8d 2722 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(PL_statname, n_a), '\n'))
cea2e8a9 2723 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
a0d0e21e
LW		 2724 max = 0;
2725 }
2726 }
2727
54310121 2728 gimme = GIMME_V;
2729 if (gimme != G_ARRAY) {
2730 if (gimme != G_VOID)
2731 XPUSHs(boolSV(max));
2732 RETURN;
a0d0e21e
LW		 2733 }
2734 if (max) {
36477c24 2735 EXTEND(SP, max);
2736 EXTEND_MORTAL(max);
1ff81528
PL		 2737 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2738 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2739 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2740 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2741#if Uid_t_size > IVSIZE
2742 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2743#else
23dcd6c8 2744# if Uid_t_sign <= 0
1ff81528 2745 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2746# else
2747 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2748# endif
146174a9 2749#endif
301e8125 2750#if Gid_t_size > IVSIZE
146174a9
CB		 2751 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2752#else
23dcd6c8 2753# if Gid_t_sign <= 0
1ff81528 2754 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2755# else
2756 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2757# endif
146174a9 2758#endif
cbdc8872 2759#ifdef USE_STAT_RDEV
1ff81528 2760 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2761#else
79cb57f6 2762 PUSHs(sv_2mortal(newSVpvn("", 0)));
cbdc8872 2763#endif
146174a9
CB		 2764#if Off_t_size > IVSIZE
2765 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_size)));
2766#else
1ff81528 2767 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2768#endif
cbdc8872 2769#ifdef BIG_TIME
172ae379
JH		 2770 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2771 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2772 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2773#else
1ff81528
PL		 2774 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2775 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2776 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
cbdc8872 2777#endif
a0d0e21e 2778#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2779 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2780 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2781#else
79cb57f6
GS		 2782 PUSHs(sv_2mortal(newSVpvn("", 0)));
2783 PUSHs(sv_2mortal(newSVpvn("", 0)));
a0d0e21e
LW		 2784#endif
2785 }
2786 RETURN;
2787}
2788
2789PP(pp_ftrread)
2790{
5ff3f7a4 2791 I32 result;
39644a26 2792 dSP;
5ff3f7a4 2793#if defined(HAS_ACCESS) && defined(R_OK)
2d8e6c8d 2794 STRLEN n_a;
5ff3f7a4 2795 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2796 result = access(TOPpx, R_OK);
5ff3f7a4
GS		 2797 if (result == 0)
2798 RETPUSHYES;
2799 if (result < 0)
2800 RETPUSHUNDEF;
2801 RETPUSHNO;
22865c03
GS		 2802 }
2803 else
cea2e8a9 2804 result = my_stat();
5ff3f7a4 2805#else
cea2e8a9 2806 result = my_stat();
5ff3f7a4 2807#endif
22865c03 2808 SPAGAIN;
a0d0e21e
LW		 2809 if (result < 0)
2810 RETPUSHUNDEF;
3280af22 2811 if (cando(S_IRUSR, 0, &PL_statcache))
a0d0e21e
LW		 2812 RETPUSHYES;
2813 RETPUSHNO;
2814}
2815
2816PP(pp_ftrwrite)
2817{
5ff3f7a4 2818 I32 result;
39644a26 2819 dSP;
5ff3f7a4 2820#if defined(HAS_ACCESS) && defined(W_OK)
2d8e6c8d 2821 STRLEN n_a;
5ff3f7a4 2822 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2823 result = access(TOPpx, W_OK);
5ff3f7a4
GS		 2824 if (result == 0)
2825 RETPUSHYES;
2826 if (result < 0)
2827 RETPUSHUNDEF;
2828 RETPUSHNO;
22865c03
GS		 2829 }
2830 else
cea2e8a9 2831 result = my_stat();
5ff3f7a4 2832#else
cea2e8a9 2833 result = my_stat();
5ff3f7a4 2834#endif
22865c03 2835 SPAGAIN;
a0d0e21e
LW		 2836 if (result < 0)
2837 RETPUSHUNDEF;
3280af22 2838 if (cando(S_IWUSR, 0, &PL_statcache))
a0d0e21e
LW		 2839 RETPUSHYES;
2840 RETPUSHNO;
2841}
2842
2843PP(pp_ftrexec)
2844{
5ff3f7a4 2845 I32 result;
39644a26 2846 dSP;
5ff3f7a4 2847#if defined(HAS_ACCESS) && defined(X_OK)
2d8e6c8d 2848 STRLEN n_a;
5ff3f7a4 2849 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2850 result = access(TOPpx, X_OK);
5ff3f7a4
GS		 2851 if (result == 0)
2852 RETPUSHYES;
2853 if (result < 0)
2854 RETPUSHUNDEF;
2855 RETPUSHNO;
22865c03
GS		 2856 }
2857 else
cea2e8a9 2858 result = my_stat();
5ff3f7a4 2859#else
cea2e8a9 2860 result = my_stat();
5ff3f7a4 2861#endif
22865c03 2862 SPAGAIN;
a0d0e21e
LW		 2863 if (result < 0)
2864 RETPUSHUNDEF;
3280af22 2865 if (cando(S_IXUSR, 0, &PL_statcache))
a0d0e21e
LW		 2866 RETPUSHYES;
2867 RETPUSHNO;
2868}
2869
2870PP(pp_fteread)
2871{
5ff3f7a4 2872 I32 result;
39644a26 2873 dSP;
5ff3f7a4 2874#ifdef PERL_EFF_ACCESS_R_OK
2d8e6c8d 2875 STRLEN n_a;
5ff3f7a4 2876 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2877 result = PERL_EFF_ACCESS_R_OK(TOPpx);
5ff3f7a4
GS		 2878 if (result == 0)
2879 RETPUSHYES;
2880 if (result < 0)
2881 RETPUSHUNDEF;
2882 RETPUSHNO;
22865c03
GS		 2883 }
2884 else
cea2e8a9 2885 result = my_stat();
5ff3f7a4 2886#else
cea2e8a9 2887 result = my_stat();
5ff3f7a4 2888#endif
22865c03 2889 SPAGAIN;
a0d0e21e
LW		 2890 if (result < 0)
2891 RETPUSHUNDEF;
3280af22 2892 if (cando(S_IRUSR, 1, &PL_statcache))
a0d0e21e
LW		 2893 RETPUSHYES;
2894 RETPUSHNO;
2895}
2896
2897PP(pp_ftewrite)
2898{
5ff3f7a4 2899 I32 result;
39644a26 2900 dSP;
5ff3f7a4 2901#ifdef PERL_EFF_ACCESS_W_OK
2d8e6c8d 2902 STRLEN n_a;
5ff3f7a4 2903 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2904 result = PERL_EFF_ACCESS_W_OK(TOPpx);
5ff3f7a4
GS		 2905 if (result == 0)
2906 RETPUSHYES;
2907 if (result < 0)
2908 RETPUSHUNDEF;
2909 RETPUSHNO;
22865c03
GS		 2910 }
2911 else
cea2e8a9 2912 result = my_stat();
5ff3f7a4 2913#else
cea2e8a9 2914 result = my_stat();
5ff3f7a4 2915#endif
22865c03 2916 SPAGAIN;
a0d0e21e
LW		 2917 if (result < 0)
2918 RETPUSHUNDEF;
3280af22 2919 if (cando(S_IWUSR, 1, &PL_statcache))
a0d0e21e
LW		 2920 RETPUSHYES;
2921 RETPUSHNO;
2922}
2923
2924PP(pp_fteexec)
2925{
5ff3f7a4 2926 I32 result;
39644a26 2927 dSP;
5ff3f7a4 2928#ifdef PERL_EFF_ACCESS_X_OK
2d8e6c8d 2929 STRLEN n_a;
5ff3f7a4 2930 if ((PL_hints & HINT_FILETEST_ACCESS) && SvPOK(TOPs)) {
2d8e6c8d 2931 result = PERL_EFF_ACCESS_X_OK(TOPpx);
5ff3f7a4
GS		 2932 if (result == 0)
2933 RETPUSHYES;
2934 if (result < 0)
2935 RETPUSHUNDEF;
2936 RETPUSHNO;
22865c03
GS		 2937 }
2938 else
cea2e8a9 2939 result = my_stat();
5ff3f7a4 2940#else
cea2e8a9 2941 result = my_stat();
5ff3f7a4 2942#endif
22865c03 2943 SPAGAIN;
a0d0e21e
LW		 2944 if (result < 0)
2945 RETPUSHUNDEF;
3280af22 2946 if (cando(S_IXUSR, 1, &PL_statcache))
a0d0e21e
LW		 2947 RETPUSHYES;
2948 RETPUSHNO;
2949}
2950
2951PP(pp_ftis)
2952{
cea2e8a9 2953 I32 result = my_stat();
39644a26 2954 dSP;
a0d0e21e
LW		 2955 if (result < 0)
2956 RETPUSHUNDEF;
2957 RETPUSHYES;
2958}
2959
2960PP(pp_fteowned)
2961{
cea2e8a9 2962 return pp_ftrowned();
a0d0e21e
LW		 2963}
2964
2965PP(pp_ftrowned)
2966{
cea2e8a9 2967 I32 result = my_stat();
39644a26 2968 dSP;
a0d0e21e
LW		 2969 if (result < 0)
2970 RETPUSHUNDEF;
146174a9
CB		 2971 if (PL_statcache.st_uid == (PL_op->op_type == OP_FTEOWNED ?
2972 PL_euid : PL_uid) )
a0d0e21e
LW		 2973 RETPUSHYES;
2974 RETPUSHNO;
2975}
2976
2977PP(pp_ftzero)
2978{
cea2e8a9 2979 I32 result = my_stat();
39644a26 2980 dSP;
a0d0e21e
LW		 2981 if (result < 0)
2982 RETPUSHUNDEF;
146174a9 2983 if (PL_statcache.st_size == 0)
a0d0e21e
LW		 2984 RETPUSHYES;
2985 RETPUSHNO;
2986}
2987
2988PP(pp_ftsize)
2989{
cea2e8a9 2990 I32 result = my_stat();
39644a26 2991 dSP; dTARGET;
a0d0e21e
LW		 2992 if (result < 0)
2993 RETPUSHUNDEF;
146174a9
CB		 2994#if Off_t_size > IVSIZE
2995 PUSHn(PL_statcache.st_size);
2996#else
3280af22 2997 PUSHi(PL_statcache.st_size);
146174a9 2998#endif
a0d0e21e
LW		 2999 RETURN;
3000}
3001
3002PP(pp_ftmtime)
3003{
cea2e8a9 3004 I32 result = my_stat();
39644a26 3005 dSP; dTARGET;
a0d0e21e
LW		 3006 if (result < 0)
3007 RETPUSHUNDEF;
c6419e06 3008 PUSHn( (PL_basetime - PL_statcache.st_mtime) / 86400.0 );
a0d0e21e
LW		 3009 RETURN;
3010}
3011
3012PP(pp_ftatime)
3013{
cea2e8a9 3014 I32 result = my_stat();
39644a26 3015 dSP; dTARGET;
a0d0e21e
LW		 3016 if (result < 0)
3017 RETPUSHUNDEF;
c6419e06 3018 PUSHn( (PL_basetime - PL_statcache.st_atime) / 86400.0 );
a0d0e21e
LW		 3019 RETURN;
3020}
3021
3022PP(pp_ftctime)
3023{
cea2e8a9 3024 I32 result = my_stat();
39644a26 3025 dSP; dTARGET;
a0d0e21e
LW		 3026 if (result < 0)
3027 RETPUSHUNDEF;
c6419e06 3028 PUSHn( (PL_basetime - PL_statcache.st_ctime) / 86400.0 );
a0d0e21e
LW		 3029 RETURN;
3030}
3031
3032PP(pp_ftsock)
3033{
cea2e8a9 3034 I32 result = my_stat();
39644a26 3035 dSP;
a0d0e21e
LW		 3036 if (result < 0)
3037 RETPUSHUNDEF;
3280af22 3038 if (S_ISSOCK(PL_statcache.st_mode))
a0d0e21e
LW		 3039 RETPUSHYES;
3040 RETPUSHNO;
3041}
3042
3043PP(pp_ftchr)
3044{
cea2e8a9 3045 I32 result = my_stat();
39644a26 3046 dSP;
a0d0e21e
LW		 3047 if (result < 0)
3048 RETPUSHUNDEF;
3280af22 3049 if (S_ISCHR(PL_statcache.st_mode))
a0d0e21e
LW		 3050 RETPUSHYES;
3051 RETPUSHNO;
3052}
3053
3054PP(pp_ftblk)
3055{
cea2e8a9 3056 I32 result = my_stat();
39644a26 3057 dSP;
a0d0e21e
LW		 3058 if (result < 0)
3059 RETPUSHUNDEF;
3280af22 3060 if (S_ISBLK(PL_statcache.st_mode))
a0d0e21e
LW		 3061 RETPUSHYES;
3062 RETPUSHNO;
3063}
3064
3065PP(pp_ftfile)
3066{
cea2e8a9 3067 I32 result = my_stat();
39644a26 3068 dSP;
a0d0e21e
LW		 3069 if (result < 0)
3070 RETPUSHUNDEF;
3280af22 3071 if (S_ISREG(PL_statcache.st_mode))
a0d0e21e
LW		 3072 RETPUSHYES;
3073 RETPUSHNO;
3074}
3075
3076PP(pp_ftdir)
3077{
cea2e8a9 3078 I32 result = my_stat();
39644a26 3079 dSP;
a0d0e21e
LW		 3080 if (result < 0)
3081 RETPUSHUNDEF;
3280af22 3082 if (S_ISDIR(PL_statcache.st_mode))
a0d0e21e
LW		 3083 RETPUSHYES;
3084 RETPUSHNO;
3085}
3086
3087PP(pp_ftpipe)
3088{
cea2e8a9 3089 I32 result = my_stat();
39644a26 3090 dSP;
a0d0e21e
LW		 3091 if (result < 0)
3092 RETPUSHUNDEF;
3280af22 3093 if (S_ISFIFO(PL_statcache.st_mode))
a0d0e21e
LW		 3094 RETPUSHYES;
3095 RETPUSHNO;
3096}
3097
3098PP(pp_ftlink)
3099{
cea2e8a9 3100 I32 result = my_lstat();
39644a26 3101 dSP;
a0d0e21e
LW		 3102 if (result < 0)
3103 RETPUSHUNDEF;
3280af22 3104 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e
LW		 3105 RETPUSHYES;
3106 RETPUSHNO;
3107}
3108
3109PP(pp_ftsuid)
3110{
39644a26 3111 dSP;
a0d0e21e 3112#ifdef S_ISUID
cea2e8a9 3113 I32 result = my_stat();
a0d0e21e
LW		 3114 SPAGAIN;
3115 if (result < 0)
3116 RETPUSHUNDEF;
3280af22 3117 if (PL_statcache.st_mode & S_ISUID)
a0d0e21e
LW		 3118 RETPUSHYES;
3119#endif
3120 RETPUSHNO;
3121}
3122
3123PP(pp_ftsgid)
3124{
39644a26 3125 dSP;
a0d0e21e 3126#ifdef S_ISGID
cea2e8a9 3127 I32 result = my_stat();
a0d0e21e
LW		 3128 SPAGAIN;
3129 if (result < 0)
3130 RETPUSHUNDEF;
3280af22 3131 if (PL_statcache.st_mode & S_ISGID)
a0d0e21e
LW		 3132 RETPUSHYES;
3133#endif
3134 RETPUSHNO;
3135}
3136
3137PP(pp_ftsvtx)
3138{
39644a26 3139 dSP;
a0d0e21e 3140#ifdef S_ISVTX
cea2e8a9 3141 I32 result = my_stat();
a0d0e21e
LW		 3142 SPAGAIN;
3143 if (result < 0)
3144 RETPUSHUNDEF;
3280af22 3145 if (PL_statcache.st_mode & S_ISVTX)
a0d0e21e
LW		 3146 RETPUSHYES;
3147#endif
3148 RETPUSHNO;
3149}
3150
3151PP(pp_fttty)
3152{
39644a26 3153 dSP;
a0d0e21e
LW		 3154 int fd;
3155 GV *gv;
fb73857a 3156 char *tmps = Nullch;
2d8e6c8d 3157 STRLEN n_a;
fb73857a 3158
533c011a 3159 if (PL_op->op_flags & OPf_REF)
146174a9 3160 gv = cGVOP_gv;
fb73857a 3161 else if (isGV(TOPs))
3162 gv = (GV*)POPs;
3163 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3164 gv = (GV*)SvRV(POPs);
a0d0e21e 3165 else
2d8e6c8d 3166 gv = gv_fetchpv(tmps = POPpx, FALSE, SVt_PVIO);
fb73857a 3167
a0d0e21e 3168 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3169 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
fb73857a 3170 else if (tmps && isDIGIT(*tmps))
a0d0e21e
LW		 3171 fd = atoi(tmps);
3172 else
3173 RETPUSHUNDEF;
6ad3d225 3174 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3175 RETPUSHYES;
3176 RETPUSHNO;
3177}
3178
16d20bd9
AD		 3179#if defined(atarist) /* this will work with atariST. Configure will
3180 make guesses for other systems. */
3181# define FILE_base(f) ((f)->_base)
3182# define FILE_ptr(f) ((f)->_ptr)
3183# define FILE_cnt(f) ((f)->_cnt)
3184# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3185#endif
3186
3187PP(pp_fttext)
3188{
39644a26 3189 dSP;
a0d0e21e
LW		 3190 I32 i;
3191 I32 len;
3192 I32 odd = 0;
3193 STDCHAR tbuf[512];
3194 register STDCHAR *s;
3195 register IO *io;
5f05dabc 3196 register SV *sv;
3197 GV *gv;
2d8e6c8d 3198 STRLEN n_a;
146174a9 3199 PerlIO *fp;
a0d0e21e 3200
533c011a 3201 if (PL_op->op_flags & OPf_REF)
146174a9 3202 gv = cGVOP_gv;
5f05dabc 3203 else if (isGV(TOPs))
3204 gv = (GV*)POPs;
3205 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3206 gv = (GV*)SvRV(POPs);
3207 else
3208 gv = Nullgv;
3209
3210 if (gv) {
a0d0e21e 3211 EXTEND(SP, 1);
3280af22
NIS		 3212 if (gv == PL_defgv) {
3213 if (PL_statgv)
3214 io = GvIO(PL_statgv);
a0d0e21e 3215 else {
3280af22 3216 sv = PL_statname;
a0d0e21e
LW		 3217 goto really_filename;
3218 }
3219 }
3220 else {
3280af22
NIS		 3221 PL_statgv = gv;
3222 PL_laststatval = -1;
3223 sv_setpv(PL_statname, "");
3224 io = GvIO(PL_statgv);
a0d0e21e
LW		 3225 }
3226 if (io && IoIFP(io)) {
5f05dabc 3227 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3228 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3229 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3230 if (PL_laststatval < 0)
5f05dabc 3231 RETPUSHUNDEF;
9cbac4c7 3232 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3233 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3234 RETPUSHNO;
3235 else
3236 RETPUSHYES;
9cbac4c7 3237 }
a20bf0c3 3238 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3239 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3240 if (i != EOF)
760ac839 3241 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3242 }
a20bf0c3 3243 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3244 RETPUSHYES;
a20bf0c3
JH		 3245 len = PerlIO_get_bufsiz(IoIFP(io));
3246 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3247 /* sfio can have large buffers - limit to 512 */
3248 if (len > 512)
3249 len = 512;
a0d0e21e
LW		 3250 }
3251 else {
2dd78f96 3252 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3253 gv = cGVOP_gv;
2dd78f96 3254 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3255 }
748a9306 3256 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e
LW		 3257 RETPUSHUNDEF;
3258 }
3259 }
3260 else {
3261 sv = POPs;
5f05dabc 3262 really_filename:
3280af22
NIS		 3263 PL_statgv = Nullgv;
3264 PL_laststatval = -1;
2d8e6c8d 3265 sv_setpv(PL_statname, SvPV(sv, n_a));
146174a9 3266 if (!(fp = PerlIO_open(SvPVX(PL_statname), "r"))) {
2d8e6c8d 3267 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
cea2e8a9 3268 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
a0d0e21e
LW		 3269 RETPUSHUNDEF;
3270 }
146174a9
CB		 3271 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3272 if (PL_laststatval < 0) {
3273 (void)PerlIO_close(fp);
5f05dabc 3274 RETPUSHUNDEF;
146174a9 3275 }
60382766 3276 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
146174a9
CB		 3277 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3278 (void)PerlIO_close(fp);
a0d0e21e 3279 if (len <= 0) {
533c011a 3280 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3281 RETPUSHNO; /* special case NFS directories */
3282 RETPUSHYES; /* null file is anything */
3283 }
3284 s = tbuf;
3285 }
3286
3287 /* now scan s to look for textiness */
4633a7c4 3288 /* XXX ASCII dependent code */
a0d0e21e 3289
146174a9
CB		 3290#if defined(DOSISH) || defined(USEMYBINMODE)
3291 /* ignore trailing ^Z on short files */
3292 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3293 --len;
3294#endif
3295
a0d0e21e
LW		 3296 for (i = 0; i < len; i++, s++) {
3297 if (!*s) { /* null never allowed in text */
3298 odd += len;
3299 break;
3300 }
9d116dd7 3301#ifdef EBCDIC
301e8125 3302 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3303 odd++;
3304#else
146174a9
CB		 3305 else if (*s & 128) {
3306#ifdef USE_LOCALE
2de3dbcc 3307 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3308 continue;
3309#endif
3310 /* utf8 characters don't count as odd */
fd400ab9 3311 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3312 int ulen = UTF8SKIP(s);
3313 if (ulen < len - i) {
3314 int j;
3315 for (j = 1; j < ulen; j++) {
fd400ab9 3316 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3317 goto not_utf8;
3318 }
3319 --ulen; /* loop does extra increment */
3320 s += ulen;
3321 i += ulen;
3322 continue;
3323 }
3324 }
3325 not_utf8:
3326 odd++;
146174a9 3327 }
a0d0e21e
LW		 3328 else if (*s < 32 &&
3329 *s != '\n' && *s != '\r' && *s != '\b' &&
3330 *s != '\t' && *s != '\f' && *s != 27)
3331 odd++;
9d116dd7 3332#endif
a0d0e21e
LW		 3333 }
3334
533c011a 3335 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3336 RETPUSHNO;
3337 else
3338 RETPUSHYES;
3339}
3340
3341PP(pp_ftbinary)
3342{
cea2e8a9 3343 return pp_fttext();
a0d0e21e
LW		 3344}
3345
3346/* File calls. */
3347
3348PP(pp_chdir)
3349{
39644a26 3350 dSP; dTARGET;
a0d0e21e
LW		 3351 char *tmps;
3352 SV **svp;
2d8e6c8d 3353 STRLEN n_a;
a0d0e21e
LW		 3354
3355 if (MAXARG < 1)
3356 tmps = Nullch;
3357 else
2d8e6c8d 3358 tmps = POPpx;
a0d0e21e 3359 if (!tmps || !*tmps) {
3280af22 3360 svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE);
a0d0e21e 3361 if (svp)
2d8e6c8d 3362 tmps = SvPV(*svp, n_a);
a0d0e21e
LW		 3363 }
3364 if (!tmps || !*tmps) {
3280af22 3365 svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE);
a0d0e21e 3366 if (svp)
2d8e6c8d 3367 tmps = SvPV(*svp, n_a);
a0d0e21e 3368 }
491527d0
GS		 3369#ifdef VMS
3370 if (!tmps || !*tmps) {
6b88bc9c 3371 svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE);
491527d0 3372 if (svp)
2d8e6c8d 3373 tmps = SvPV(*svp, n_a);
491527d0
GS		 3374 }
3375#endif
a0d0e21e 3376 TAINT_PROPER("chdir");
6ad3d225 3377 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3378#ifdef VMS
3379 /* Clear the DEFAULT element of ENV so we'll get the new value
3380 * in the future. */
6b88bc9c 3381 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3382#endif
a0d0e21e
LW		 3383 RETURN;
3384}
3385
3386PP(pp_chown)
3387{
39644a26 3388 dSP; dMARK; dTARGET;
a0d0e21e
LW		 3389 I32 value;
3390#ifdef HAS_CHOWN
533c011a 3391 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3392 SP = MARK;
3393 PUSHi(value);
3394 RETURN;
3395#else
cea2e8a9 3396 DIE(aTHX_ PL_no_func, "Unsupported function chown");
a0d0e21e
LW		 3397#endif
3398}
3399
3400PP(pp_chroot)
3401{
39644a26 3402 dSP; dTARGET;
a0d0e21e 3403#ifdef HAS_CHROOT
2d8e6c8d 3404 STRLEN n_a;
d05c1ba0 3405 char *tmps = POPpx;
a0d0e21e
LW		 3406 TAINT_PROPER("chroot");
3407 PUSHi( chroot(tmps) >= 0 );
3408 RETURN;
3409#else
cea2e8a9 3410 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3411#endif
3412}
3413
3414PP(pp_unlink)
3415{
39644a26 3416 dSP; dMARK; dTARGET;
a0d0e21e 3417 I32 value;
533c011a 3418 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3419 SP = MARK;
3420 PUSHi(value);
3421 RETURN;
3422}
3423
3424PP(pp_chmod)
3425{
39644a26 3426 dSP; dMARK; dTARGET;
a0d0e21e 3427 I32 value;
533c011a 3428 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3429 SP = MARK;
3430 PUSHi(value);
3431 RETURN;
3432}
3433
3434PP(pp_utime)
3435{
39644a26 3436 dSP; dMARK; dTARGET;
a0d0e21e 3437 I32 value;
533c011a 3438 value = (I32)apply(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 3439 SP = MARK;
3440 PUSHi(value);
3441 RETURN;
3442}
3443
3444PP(pp_rename)
3445{
39644a26 3446 dSP; dTARGET;
a0d0e21e 3447 int anum;
2d8e6c8d 3448 STRLEN n_a;
a0d0e21e 3449
2d8e6c8d
GS		 3450 char *tmps2 = POPpx;
3451 char *tmps = SvPV(TOPs, n_a);
a0d0e21e
LW		 3452 TAINT_PROPER("rename");
3453#ifdef HAS_RENAME
baed7233 3454 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3455#else
6b88bc9c 3456 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
ed969818
W		 3457 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3458 anum = 1;
3459 else {
3654eb6c 3460 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
ed969818
W		 3461 (void)UNLINK(tmps2);
3462 if (!(anum = link(tmps, tmps2)))
3463 anum = UNLINK(tmps);
3464 }
a0d0e21e
LW		 3465 }
3466#endif
3467 SETi( anum >= 0 );
3468 RETURN;
3469}
3470
3471PP(pp_link)
3472{
39644a26 3473 dSP; dTARGET;
a0d0e21e 3474#ifdef HAS_LINK
2d8e6c8d
GS		 3475 STRLEN n_a;
3476 char *tmps2 = POPpx;
3477 char *tmps = SvPV(TOPs, n_a);
a0d0e21e 3478 TAINT_PROPER("link");
146174a9 3479 SETi( PerlLIO_link(tmps, tmps2) >= 0 );
a0d0e21e 3480#else
cea2e8a9 3481 DIE(aTHX_ PL_no_func, "Unsupported function link");
a0d0e21e
LW		 3482#endif
3483 RETURN;
3484}
3485
3486PP(pp_symlink)
3487{
39644a26 3488 dSP; dTARGET;
a0d0e21e 3489#ifdef HAS_SYMLINK
2d8e6c8d
GS		 3490 STRLEN n_a;
3491 char *tmps2 = POPpx;
3492 char *tmps = SvPV(TOPs, n_a);
a0d0e21e
LW		 3493 TAINT_PROPER("symlink");
3494 SETi( symlink(tmps, tmps2) >= 0 );
3495 RETURN;
3496#else
cea2e8a9 3497 DIE(aTHX_ PL_no_func, "symlink");
a0d0e21e
LW		 3498#endif
3499}
3500
3501PP(pp_readlink)
3502{
39644a26 3503 dSP; dTARGET;
a0d0e21e
LW		 3504#ifdef HAS_SYMLINK
3505 char *tmps;
46fc3d4c 3506 char buf[MAXPATHLEN];
a0d0e21e 3507 int len;
2d8e6c8d 3508 STRLEN n_a;
46fc3d4c 3509
fb73857a 3510#ifndef INCOMPLETE_TAINTS
3511 TAINT;
3512#endif
2d8e6c8d 3513 tmps = POPpx;
a0d0e21e
LW		 3514 len = readlink(tmps, buf, sizeof buf);
3515 EXTEND(SP, 1);
3516 if (len < 0)
3517 RETPUSHUNDEF;
3518 PUSHp(buf, len);
3519 RETURN;
3520#else
3521 EXTEND(SP, 1);
3522 RETSETUNDEF; /* just pretend it's a normal file */
3523#endif
3524}
3525
3526#if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
ba106d47 3527STATIC int
cea2e8a9 3528S_dooneliner(pTHX_ char *cmd, char *filename)
a0d0e21e 3529{
1e422769 3530 char *save_filename = filename;
3531 char *cmdline;
3532 char *s;
760ac839 3533 PerlIO *myfp;
1e422769 3534 int anum = 1;
a0d0e21e 3535
1e422769 3536 New(666, cmdline, strlen(cmd) + (strlen(filename) * 2) + 10, char);
3537 strcpy(cmdline, cmd);
3538 strcat(cmdline, " ");
3539 for (s = cmdline + strlen(cmdline); *filename; ) {
a0d0e21e
LW		 3540 *s++ = '\\';
3541 *s++ = *filename++;
3542 }
3543 strcpy(s, " 2>&1");
6ad3d225 3544 myfp = PerlProc_popen(cmdline, "r");
1e422769 3545 Safefree(cmdline);
3546
a0d0e21e 3547 if (myfp) {
1e422769 3548 SV *tmpsv = sv_newmortal();
6b88bc9c 3549 /* Need to save/restore 'PL_rs' ?? */
760ac839 3550 s = sv_gets(tmpsv, myfp, 0);
6ad3d225 3551 (void)PerlProc_pclose(myfp);
a0d0e21e 3552 if (s != Nullch) {
1e422769 3553 int e;
3554 for (e = 1;
a0d0e21e 3555#ifdef HAS_SYS_ERRLIST
1e422769 3556 e <= sys_nerr
3557#endif
3558 ; e++)
3559 {
3560 /* you don't see this */
3561 char *errmsg =
3562#ifdef HAS_SYS_ERRLIST
3563 sys_errlist[e]
a0d0e21e