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Was: Bug#369481: perl-base: 5.8.4-8sarge4 seemed to trigger "weak references not...
[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW		 1/* pp_sys.c
2 *
4bb101f2 3 * Copyright (C) 1995, 1996, 1997, 1998, 1999,
359e8da2 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
a0d0e21e
LW		 5 *
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8 *
9 */
10
11/*
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
16 */
17
166f8a29
DM		 18/* This file contains system pp ("push/pop") functions that
19 * execute the opcodes that make up a perl program. A typical pp function
20 * expects to find its arguments on the stack, and usually pushes its
21 * results onto the stack, hence the 'pp' terminology. Each OP structure
22 * contains a pointer to the relevant pp_foo() function.
23 *
24 * By 'system', we mean ops which interact with the OS, such as pp_open().
25 */
26
a0d0e21e 27#include "EXTERN.h"
864dbfa3 28#define PERL_IN_PP_SYS_C
a0d0e21e
LW		 29#include "perl.h"
30
f1066039
JH		 31#ifdef I_SHADOW
32/* Shadow password support for solaris - pdo@cs.umd.edu
33 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH		 34 * The API is from SysV.
35 *
36 * There are at least two more shadow interfaces,
37 * see the comments in pp_gpwent().
38 *
39 * --jhi */
40# ifdef __hpux__
c529f79d 41/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 42 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH		 43# undef MAXINT
44# endif
45# include <shadow.h>
8c0bfa08
PB		 46#endif
47
76c32331 48#ifdef I_SYS_WAIT
49# include <sys/wait.h>
50#endif
51
52#ifdef I_SYS_RESOURCE
53# include <sys/resource.h>
16d20bd9 54#endif
a0d0e21e 55
2986a63f
JH		 56#ifdef NETWARE
57NETDB_DEFINE_CONTEXT
58#endif
59
a0d0e21e 60#ifdef HAS_SELECT
1e743fda
JH		 61# ifdef I_SYS_SELECT
62# include <sys/select.h>
63# endif
a0d0e21e 64#endif
a0d0e21e 65
dc45a647
MB		 66/* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS		 68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 72*/
cb50131a 73#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW		 74extern int h_errno;
75#endif
76
77#ifdef HAS_PASSWD
78# ifdef I_PWD
79# include <pwd.h>
80# else
fd8cd3a3 81# if !defined(VMS)
20ce7b12
GS		 82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
fd8cd3a3 84# endif
a0d0e21e 85# endif
28e8609d 86# ifdef HAS_GETPWENT
10bc17b6 87#ifndef getpwent
20ce7b12 88 struct passwd *getpwent (void);
c2a8f790 89#elif defined (VMS) && defined (my_getpwent)
9fa802f3 90 struct passwd *Perl_my_getpwent (pTHX);
10bc17b6 91#endif
28e8609d 92# endif
a0d0e21e
LW		 93#endif
94
95#ifdef HAS_GROUP
96# ifdef I_GRP
97# include <grp.h>
98# else
20ce7b12
GS		 99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
a0d0e21e 101# endif
28e8609d 102# ifdef HAS_GETGRENT
10bc17b6 103#ifndef getgrent
20ce7b12 104 struct group *getgrent (void);
10bc17b6 105#endif
28e8609d 106# endif
a0d0e21e
LW		 107#endif
108
109#ifdef I_UTIME
3730b96e 110# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 111# include <sys/utime.h>
112# else
113# include <utime.h>
114# endif
a0d0e21e 115#endif
a0d0e21e 116
cbdc8872 117#ifdef HAS_CHSIZE
cd52b7b2 118# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
119# undef my_chsize
120# endif
72cc7e2a 121# define my_chsize PerlLIO_chsize
27da23d5
JH		 122#else
123# ifdef HAS_TRUNCATE
124# define my_chsize PerlLIO_chsize
125# else
126I32 my_chsize(int fd, Off_t length);
127# endif
cbdc8872 128#endif
129
ff68c719 130#ifdef HAS_FLOCK
131# define FLOCK flock
132#else /* no flock() */
133
36477c24 134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138# if defined(HAS_FCNTL) && !defined(I_FCNTL)
139# include <fcntl.h>
140# endif
141
9d9004a9 142# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 143# define FLOCK fcntl_emulate_flock
144# define FCNTL_EMULATE_FLOCK
145# else /* no flock() or fcntl(F_SETLK,...) */
146# ifdef HAS_LOCKF
147# define FLOCK lockf_emulate_flock
148# define LOCKF_EMULATE_FLOCK
149# endif /* lockf */
150# endif /* no flock() or fcntl(F_SETLK,...) */
151
152# ifdef FLOCK
20ce7b12 153 static int FLOCK (int, int);
ff68c719 154
155 /*
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
158 */
159# ifndef LOCK_SH
160# define LOCK_SH 1
161# endif
162# ifndef LOCK_EX
163# define LOCK_EX 2
164# endif
165# ifndef LOCK_NB
166# define LOCK_NB 4
167# endif
168# ifndef LOCK_UN
169# define LOCK_UN 8
170# endif
171# endif /* emulating flock() */
172
173#endif /* no flock() */
55497cff 174
85ab1d1d 175#define ZBTLEN 10
27da23d5 176static const char zero_but_true[ZBTLEN + 1] = "0 but true";
85ab1d1d 177
5ff3f7a4
GS		 178#if defined(I_SYS_ACCESS) && !defined(R_OK)
179# include <sys/access.h>
180#endif
181
c529f79d
CB		 182#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183# define FD_CLOEXEC 1 /* NeXT needs this */
184#endif
185
a4af207c
JH		 186#include "reentr.h"
187
9cffb111
OS		 188#ifdef __Lynx__
189/* Missing protos on LynxOS */
190void sethostent(int);
191void endhostent(void);
192void setnetent(int);
193void endnetent(void);
194void setprotoent(int);
195void endprotoent(void);
196void setservent(int);
197void endservent(void);
198#endif
199
faee0e31 200#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4 201
a4323dee
MB		 202/* AIX 5.2 and below use mktime for localtime, and defines the edge case
203 * for time 0x7fffffff to be valid only in UTC. AIX 5.3 provides localtime64
204 * available in the 32bit environment, which could warrant Configure
205 * checks in the future.
206 */
207#ifdef _AIX
208#define LOCALTIME_EDGECASE_BROKEN
209#endif
210
5ff3f7a4
GS		 211/* F_OK unused: if stat() cannot find it... */
212
d7558cad 213#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 214 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 215# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS		 216#endif
217
d7558cad 218#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 219# ifdef I_SYS_SECURITY
5ff3f7a4
GS		 220# include <sys/security.h>
221# endif
c955f117
JH		 222# ifdef ACC_SELF
223 /* HP SecureWare */
d7558cad 224# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH		 225# else
226 /* SCO */
d7558cad 227# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 228# endif
5ff3f7a4
GS		 229#endif
230
d7558cad 231#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 232 /* AIX */
d7558cad 233# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
5ff3f7a4
GS		 234#endif
235
d7558cad
NC		 236
237#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS		 238 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
239 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 240/* The Hard Way. */
327c3667 241STATIC int
7f4774ae 242S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 243{
c4420975
AL		 244 const Uid_t ruid = getuid();
245 const Uid_t euid = geteuid();
246 const Gid_t rgid = getgid();
247 const Gid_t egid = getegid();
5ff3f7a4
GS		 248 int res;
249
146174a9 250 LOCK_CRED_MUTEX;
5ff3f7a4 251#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 252 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 253#else
254#ifdef HAS_SETREUID
255 if (setreuid(euid, ruid))
256#else
257#ifdef HAS_SETRESUID
258 if (setresuid(euid, ruid, (Uid_t)-1))
259#endif
260#endif
cea2e8a9 261 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 262#endif
263
264#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 265 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS		 266#else
267#ifdef HAS_SETREGID
268 if (setregid(egid, rgid))
269#else
270#ifdef HAS_SETRESGID
271 if (setresgid(egid, rgid, (Gid_t)-1))
272#endif
273#endif
cea2e8a9 274 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 275#endif
276
277 res = access(path, mode);
278
279#ifdef HAS_SETREUID
280 if (setreuid(ruid, euid))
281#else
282#ifdef HAS_SETRESUID
283 if (setresuid(ruid, euid, (Uid_t)-1))
284#endif
285#endif
cea2e8a9 286 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 287
288#ifdef HAS_SETREGID
289 if (setregid(rgid, egid))
290#else
291#ifdef HAS_SETRESGID
292 if (setresgid(rgid, egid, (Gid_t)-1))
293#endif
294#endif
cea2e8a9 295 Perl_croak(aTHX_ "leaving effective gid failed");
146174a9 296 UNLOCK_CRED_MUTEX;
5ff3f7a4
GS		 297
298 return res;
299}
d7558cad 300# define PERL_EFF_ACCESS(p,f) (emulate_eaccess((p), (f)))
5ff3f7a4
GS		 301#endif
302
faee0e31 303#if !defined(PERL_EFF_ACCESS)
76ffd3b9
IZ		 304/* With it or without it: anyway you get a warning: either that
305 it is unused, or it is declared static and never defined.
306 */
327c3667 307STATIC int
7f4774ae 308S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 309{
294a48e9
AL		 310 PERL_UNUSED_ARG(path);
311 PERL_UNUSED_ARG(mode);
cea2e8a9 312 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 313 /*NOTREACHED*/
314 return -1;
315}
316#endif
317
a0d0e21e
LW		 318PP(pp_backtick)
319{
97aff369 320 dVAR; dSP; dTARGET;
760ac839 321 PerlIO *fp;
1b6737cc 322 const char * const tmps = POPpconstx;
f54cb97a 323 const I32 gimme = GIMME_V;
e1ec3a88 324 const char *mode = "r";
54310121 325
a0d0e21e 326 TAINT_PROPER("``");
16fe6d59
GS		 327 if (PL_op->op_private & OPpOPEN_IN_RAW)
328 mode = "rb";
329 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
330 mode = "rt";
2fbb330f 331 fp = PerlProc_popen(tmps, mode);
a0d0e21e 332 if (fp) {
11bcd5da 333 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
ac27b0f5
NIS		 334 if (type && *type)
335 PerlIO_apply_layers(aTHX_ fp,mode,type);
336
54310121 337 if (gimme == G_VOID) {
96827780
MB		 338 char tmpbuf[256];
339 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
a79db61d 340 NOOP;
54310121 341 }
342 else if (gimme == G_SCALAR) {
75af1a9c
DM		 343 ENTER;
344 SAVESPTR(PL_rs);
fa326138 345 PL_rs = &PL_sv_undef;
c69006e4 346 sv_setpvn(TARG, "", 0); /* note that this preserves previous buffer */
bd61b366 347 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 348 NOOP;
75af1a9c 349 LEAVE;
a0d0e21e 350 XPUSHs(TARG);
aa689395 351 SvTAINTED_on(TARG);
a0d0e21e
LW		 352 }
353 else {
a0d0e21e 354 for (;;) {
561b68a9 355 SV * const sv = newSV(79);
bd61b366 356 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW		 357 SvREFCNT_dec(sv);
358 break;
359 }
360 XPUSHs(sv_2mortal(sv));
361 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 362 SvPV_shrink_to_cur(sv);
a0d0e21e 363 }
aa689395 364 SvTAINTED_on(sv);
a0d0e21e
LW		 365 }
366 }
2fbb330f 367 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 368 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 369 }
370 else {
37038d91 371 STATUS_NATIVE_CHILD_SET(-1);
54310121 372 if (gimme == G_SCALAR)
a0d0e21e
LW		 373 RETPUSHUNDEF;
374 }
375
376 RETURN;
377}
378
379PP(pp_glob)
380{
27da23d5 381 dVAR;
a0d0e21e 382 OP *result;
f5284f61
IZ		 383 tryAMAGICunTARGET(iter, -1);
384
71686f12
GS		 385 /* Note that we only ever get here if File::Glob fails to load
386 * without at the same time croaking, for some reason, or if
387 * perl was built with PERL_EXTERNAL_GLOB */
388
a0d0e21e 389 ENTER;
a0d0e21e 390
c90c0ff4 391#ifndef VMS
3280af22 392 if (PL_tainting) {
7bac28a0 393 /*
394 * The external globbing program may use things we can't control,
395 * so for security reasons we must assume the worst.
396 */
397 TAINT;
22c35a8c 398 taint_proper(PL_no_security, "glob");
7bac28a0 399 }
c90c0ff4 400#endif /* !VMS */
7bac28a0 401
3280af22
NIS		 402 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
403 PL_last_in_gv = (GV*)*PL_stack_sp--;
a0d0e21e 404
3280af22 405 SAVESPTR(PL_rs); /* This is not permanent, either. */
396482e1 406 PL_rs = sv_2mortal(newSVpvs("\000"));
c07a80fd 407#ifndef DOSISH
408#ifndef CSH
6b88bc9c 409 *SvPVX(PL_rs) = '\n';
a0d0e21e 410#endif /* !CSH */
55497cff 411#endif /* !DOSISH */
c07a80fd 412
a0d0e21e
LW		 413 result = do_readline();
414 LEAVE;
415 return result;
416}
417
a0d0e21e
LW		 418PP(pp_rcatline)
419{
97aff369 420 dVAR;
146174a9 421 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 422 return do_readline();
423}
424
425PP(pp_warn)
426{
97aff369 427 dVAR; dSP; dMARK;
06bf62c7 428 SV *tmpsv;
e1ec3a88 429 const char *tmps;
06bf62c7 430 STRLEN len;
b59aed67 431 if (SP - MARK > 1) {
a0d0e21e 432 dTARGET;
3280af22 433 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 434 tmpsv = TARG;
a0d0e21e
LW		 435 SP = MARK + 1;
436 }
b59aed67
TS		 437 else if (SP == MARK) {
438 tmpsv = &PL_sv_no;
439 EXTEND(SP, 1);
440 }
a0d0e21e 441 else {
06bf62c7 442 tmpsv = TOPs;
a0d0e21e 443 }
e62f0680 444 tmps = SvPV_const(tmpsv, len);
7b102d90 445 if ((!tmps || !len) && PL_errgv) {
1b6737cc 446 SV * const error = ERRSV;
862a34c6 447 SvUPGRADE(error, SVt_PV);
4e6ea2c3 448 if (SvPOK(error) && SvCUR(error))
396482e1 449 sv_catpvs(error, "\t...caught");
06bf62c7 450 tmpsv = error;
e62f0680 451 tmps = SvPV_const(tmpsv, len);
a0d0e21e 452 }
06bf62c7 453 if (!tmps || !len)
396482e1 454 tmpsv = sv_2mortal(newSVpvs("Warning: something's wrong"));
06bf62c7 455
95b63a38 456 Perl_warn(aTHX_ "%"SVf, (void*)tmpsv);
a0d0e21e
LW		 457 RETSETYES;
458}
459
460PP(pp_die)
461{
97aff369 462 dVAR; dSP; dMARK;
e1ec3a88 463 const char *tmps;
06bf62c7
GS		 464 SV *tmpsv;
465 STRLEN len;
466 bool multiarg = 0;
96e176bf
CL		 467#ifdef VMS
468 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
469#endif
a0d0e21e
LW		 470 if (SP - MARK != 1) {
471 dTARGET;
3280af22 472 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 473 tmpsv = TARG;
5c144d81 474 tmps = SvPV_const(tmpsv, len);
06bf62c7 475 multiarg = 1;
a0d0e21e
LW		 476 SP = MARK + 1;
477 }
478 else {
4e6ea2c3 479 tmpsv = TOPs;
bd61b366 480 tmps = SvROK(tmpsv) ? NULL : SvPV_const(tmpsv, len);
a0d0e21e 481 }
06bf62c7 482 if (!tmps || !len) {
0bcc34c2 483 SV * const error = ERRSV;
862a34c6 484 SvUPGRADE(error, SVt_PV);
06bf62c7
GS		 485 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
486 if (!multiarg)
4e6ea2c3 487 SvSetSV(error,tmpsv);
06bf62c7 488 else if (sv_isobject(error)) {
7452cf6a
AL		 489 HV * const stash = SvSTASH(SvRV(error));
490 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
05423cc9 491 if (gv) {
7452cf6a
AL		 492 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
493 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
05423cc9
GS		 494 EXTEND(SP, 3);
495 PUSHMARK(SP);
496 PUSHs(error);
497 PUSHs(file);
498 PUSHs(line);
499 PUTBACK;
864dbfa3
GS		 500 call_sv((SV*)GvCV(gv),
501 G_SCALAR|G_EVAL|G_KEEPERR);
3280af22 502 sv_setsv(error,*PL_stack_sp--);
05423cc9
GS		 503 }
504 }
bd61b366 505 DIE(aTHX_ NULL);
4e6ea2c3
GS		 506 }
507 else {
508 if (SvPOK(error) && SvCUR(error))
396482e1 509 sv_catpvs(error, "\t...propagated");
06bf62c7 510 tmpsv = error;
dc8d642c
DM		 511 if (SvOK(tmpsv))
512 tmps = SvPV_const(tmpsv, len);
513 else
bd61b366 514 tmps = NULL;
4e6ea2c3 515 }
a0d0e21e 516 }
06bf62c7 517 if (!tmps || !len)
396482e1 518 tmpsv = sv_2mortal(newSVpvs("Died"));
06bf62c7 519
95b63a38 520 DIE(aTHX_ "%"SVf, (void*)tmpsv);
a0d0e21e
LW		 521}
522
523/* I/O. */
524
525PP(pp_open)
526{
27da23d5 527 dVAR; dSP;
a567e93b
NIS		 528 dMARK; dORIGMARK;
529 dTARGET;
a0d0e21e 530 SV *sv;
5b468f54 531 IO *io;
5c144d81 532 const char *tmps;
a0d0e21e 533 STRLEN len;
a567e93b 534 bool ok;
a0d0e21e 535
c4420975
AL		 536 GV * const gv = (GV *)*++MARK;
537
5f05dabc 538 if (!isGV(gv))
cea2e8a9 539 DIE(aTHX_ PL_no_usym, "filehandle");
a79db61d
AL		 540 if ((io = GvIOp(gv))) {
541 MAGIC *mg;
36477c24 542 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 543
a79db61d 544 mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
c4420975
AL		 545 if (mg) {
546 /* Method's args are same as ours ... */
547 /* ... except handle is replaced by the object */
548 *MARK-- = SvTIED_obj((SV*)io, mg);
549 PUSHMARK(MARK);
550 PUTBACK;
551 ENTER;
552 call_method("OPEN", G_SCALAR);
553 LEAVE;
554 SPAGAIN;
555 RETURN;
556 }
4592e6ca
NIS		 557 }
558
a567e93b
NIS		 559 if (MARK < SP) {
560 sv = *++MARK;
561 }
562 else {
35a08ec7 563 sv = GvSVn(gv);
a567e93b
NIS		 564 }
565
5c144d81 566 tmps = SvPV_const(sv, len);
4608196e 567 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
a567e93b
NIS		 568 SP = ORIGMARK;
569 if (ok)
3280af22
NIS		 570 PUSHi( (I32)PL_forkprocess );
571 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 572 PUSHi(0);
573 else
574 RETPUSHUNDEF;
575 RETURN;
576}
577
578PP(pp_close)
579{
27da23d5 580 dVAR; dSP;
c4420975 581 GV * const gv = (MAXARG == 0) ? PL_defoutgv : (GV*)POPs;
1d603a67 582
a79db61d
AL		 583 if (gv) {
584 IO * const io = GvIO(gv);
585 if (io) {
586 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
587 if (mg) {
588 PUSHMARK(SP);
589 XPUSHs(SvTIED_obj((SV*)io, mg));
590 PUTBACK;
591 ENTER;
592 call_method("CLOSE", G_SCALAR);
593 LEAVE;
594 SPAGAIN;
595 RETURN;
596 }
597 }
1d603a67 598 }
a0d0e21e 599 EXTEND(SP, 1);
54310121 600 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 601 RETURN;
602}
603
604PP(pp_pipe_op)
605{
a0d0e21e 606#ifdef HAS_PIPE
97aff369 607 dVAR;
9cad6237 608 dSP;
a0d0e21e
LW		 609 register IO *rstio;
610 register IO *wstio;
611 int fd[2];
612
c4420975
AL		 613 GV * const wgv = (GV*)POPs;
614 GV * const rgv = (GV*)POPs;
a0d0e21e
LW		 615
616 if (!rgv || !wgv)
617 goto badexit;
618
4633a7c4 619 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
cea2e8a9 620 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 621 rstio = GvIOn(rgv);
622 wstio = GvIOn(wgv);
623
624 if (IoIFP(rstio))
625 do_close(rgv, FALSE);
626 if (IoIFP(wstio))
627 do_close(wgv, FALSE);
628
6ad3d225 629 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 630 goto badexit;
631
460c8493
IZ		 632 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
633 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 634 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 635 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 636 IoTYPE(rstio) = IoTYPE_RDONLY;
637 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 638
639 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL		 640 if (IoIFP(rstio))
641 PerlIO_close(IoIFP(rstio));
642 else
643 PerlLIO_close(fd[0]);
644 if (IoOFP(wstio))
645 PerlIO_close(IoOFP(wstio));
646 else
647 PerlLIO_close(fd[1]);
a0d0e21e
LW		 648 goto badexit;
649 }
4771b018
GS		 650#if defined(HAS_FCNTL) && defined(F_SETFD)
651 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
652 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
653#endif
a0d0e21e
LW		 654 RETPUSHYES;
655
656badexit:
657 RETPUSHUNDEF;
658#else
cea2e8a9 659 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 660#endif
661}
662
663PP(pp_fileno)
664{
27da23d5 665 dVAR; dSP; dTARGET;
a0d0e21e
LW		 666 GV *gv;
667 IO *io;
760ac839 668 PerlIO *fp;
4592e6ca
NIS		 669 MAGIC *mg;
670
a0d0e21e
LW		 671 if (MAXARG < 1)
672 RETPUSHUNDEF;
673 gv = (GV*)POPs;
4592e6ca 674
5b468f54
AMS		 675 if (gv && (io = GvIO(gv))
676 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
677 {
4592e6ca 678 PUSHMARK(SP);
5b468f54 679 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 680 PUTBACK;
681 ENTER;
864dbfa3 682 call_method("FILENO", G_SCALAR);
4592e6ca
NIS		 683 LEAVE;
684 SPAGAIN;
685 RETURN;
686 }
687
c289d2f7
JH		 688 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
689 /* Can't do this because people seem to do things like
690 defined(fileno($foo)) to check whether $foo is a valid fh.
691 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
692 report_evil_fh(gv, io, PL_op->op_type);
693 */
a0d0e21e 694 RETPUSHUNDEF;
c289d2f7
JH		 695 }
696
760ac839 697 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 698 RETURN;
699}
700
701PP(pp_umask)
702{
97aff369 703 dVAR;
27da23d5 704 dSP;
d7e492a4 705#ifdef HAS_UMASK
27da23d5 706 dTARGET;
761237fe 707 Mode_t anum;
a0d0e21e 708
a0d0e21e 709 if (MAXARG < 1) {
6ad3d225
GS		 710 anum = PerlLIO_umask(0);
711 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 712 }
713 else
6ad3d225 714 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 715 TAINT_PROPER("umask");
716 XPUSHi(anum);
717#else
a0288114 718 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS		 719 * Otherwise it's harmless and more useful to just return undef
720 * since 'group' and 'other' concepts probably don't exist here. */
721 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 722 DIE(aTHX_ "umask not implemented");
6b88bc9c 723 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 724#endif
725 RETURN;
726}
727
728PP(pp_binmode)
729{
27da23d5 730 dVAR; dSP;
a0d0e21e
LW		 731 GV *gv;
732 IO *io;
760ac839 733 PerlIO *fp;
a0714e2c 734 SV *discp = NULL;
a0d0e21e
LW		 735
736 if (MAXARG < 1)
737 RETPUSHUNDEF;
60382766 738 if (MAXARG > 1) {
16fe6d59 739 discp = POPs;
60382766 740 }
a0d0e21e 741
301e8125 742 gv = (GV*)POPs;
4592e6ca 743
a79db61d
AL		 744 if (gv && (io = GvIO(gv))) {
745 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
746 if (mg) {
747 PUSHMARK(SP);
748 XPUSHs(SvTIED_obj((SV*)io, mg));
749 if (discp)
750 XPUSHs(discp);
751 PUTBACK;
752 ENTER;
753 call_method("BINMODE", G_SCALAR);
754 LEAVE;
755 SPAGAIN;
756 RETURN;
757 }
4592e6ca 758 }
a0d0e21e
LW		 759
760 EXTEND(SP, 1);
50f846a7 761 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7
JH		 762 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
763 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 764 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC		 765 RETPUSHUNDEF;
766 }
a0d0e21e 767
40d98b49 768 PUTBACK;
60382766 769 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
bd61b366 770 (discp) ? SvPV_nolen_const(discp) : NULL)) {
38af81ff
JH		 771 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
772 if (!PerlIO_binmode(aTHX_ IoOFP(io),IoTYPE(io),
773 mode_from_discipline(discp),
bd61b366 774 (discp) ? SvPV_nolen_const(discp) : NULL)) {
38af81ff
JH		 775 SPAGAIN;
776 RETPUSHUNDEF;
777 }
778 }
40d98b49 779 SPAGAIN;
a0d0e21e 780 RETPUSHYES;
40d98b49
JH		 781 }
782 else {
783 SPAGAIN;
a0d0e21e 784 RETPUSHUNDEF;
40d98b49 785 }
a0d0e21e
LW		 786}
787
788PP(pp_tie)
789{
27da23d5 790 dVAR; dSP; dMARK;
a0d0e21e
LW		 791 HV* stash;
792 GV *gv;
a0d0e21e 793 SV *sv;
1df70142 794 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 795 const char *methname;
14befaf4 796 int how = PERL_MAGIC_tied;
e336de0d 797 U32 items;
c4420975 798 SV *varsv = *++MARK;
a0d0e21e 799
6b05c17a
NIS		 800 switch(SvTYPE(varsv)) {
801 case SVt_PVHV:
802 methname = "TIEHASH";
bfcb3514 803 HvEITER_set((HV *)varsv, 0);
6b05c17a
NIS		 804 break;
805 case SVt_PVAV:
806 methname = "TIEARRAY";
807 break;
808 case SVt_PVGV:
7fb37951
AMS		 809#ifdef GV_UNIQUE_CHECK
810 if (GvUNIQUE((GV*)varsv)) {
811 Perl_croak(aTHX_ "Attempt to tie unique GV");
5bd07a3d
DM		 812 }
813#endif
6b05c17a 814 methname = "TIEHANDLE";
14befaf4 815 how = PERL_MAGIC_tiedscalar;
5b468f54
AMS		 816 /* For tied filehandles, we apply tiedscalar magic to the IO
817 slot of the GP rather than the GV itself. AMS 20010812 */
818 if (!GvIOp(varsv))
819 GvIOp(varsv) = newIO();
820 varsv = (SV *)GvIOp(varsv);
6b05c17a
NIS		 821 break;
822 default:
823 methname = "TIESCALAR";
14befaf4 824 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 825 break;
826 }
e336de0d
GS		 827 items = SP - MARK++;
828 if (sv_isobject(*MARK)) {
6b05c17a 829 ENTER;
e788e7d3 830 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 831 PUSHMARK(SP);
eb160463 832 EXTEND(SP,(I32)items);
e336de0d
GS		 833 while (items--)
834 PUSHs(*MARK++);
835 PUTBACK;
864dbfa3 836 call_method(methname, G_SCALAR);
301e8125 837 }
6b05c17a 838 else {
864dbfa3 839 /* Not clear why we don't call call_method here too.
6b05c17a
NIS		 840 * perhaps to get different error message ?
841 */
e336de0d 842 stash = gv_stashsv(*MARK, FALSE);
6b05c17a 843 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 844 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
95b63a38 845 methname, (void*)*MARK);
6b05c17a
NIS		 846 }
847 ENTER;
e788e7d3 848 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 849 PUSHMARK(SP);
eb160463 850 EXTEND(SP,(I32)items);
e336de0d
GS		 851 while (items--)
852 PUSHs(*MARK++);
853 PUTBACK;
864dbfa3 854 call_sv((SV*)GvCV(gv), G_SCALAR);
6b05c17a 855 }
a0d0e21e
LW		 856 SPAGAIN;
857
858 sv = TOPs;
d3acc0f7 859 POPSTACK;
a0d0e21e 860 if (sv_isobject(sv)) {
33c27489 861 sv_unmagic(varsv, how);
ae21d580 862 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 863 if (varsv == SvRV(sv) &&
d87ebaca
YST		 864 (SvTYPE(varsv) == SVt_PVAV ||
865 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 866 Perl_croak(aTHX_
867 "Self-ties of arrays and hashes are not supported");
a0714e2c 868 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e
LW		 869 }
870 LEAVE;
3280af22 871 SP = PL_stack_base + markoff;
a0d0e21e
LW		 872 PUSHs(sv);
873 RETURN;
874}
875
876PP(pp_untie)
877{
27da23d5 878 dVAR; dSP;
5b468f54 879 MAGIC *mg;
33c27489 880 SV *sv = POPs;
1df70142 881 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 882 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 883
5b468f54
AMS		 884 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
885 RETPUSHYES;
886
65eba18f 887 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 888 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 889 if (obj) {
c4420975 890 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 891 CV *cv;
c4420975 892 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0
JS		 893 PUSHMARK(SP);
894 XPUSHs(SvTIED_obj((SV*)gv, mg));
895 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
896 PUTBACK;
897 ENTER;
898 call_sv((SV *)cv, G_VOID);
899 LEAVE;
900 SPAGAIN;
901 }
041457d9 902 else if (mg && SvREFCNT(obj) > 1 && ckWARN(WARN_UNTIE)) {
9014280d 903 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
fa2b88e0
JS		 904 "untie attempted while %"UVuf" inner references still exist",
905 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 906 }
cbdc8872 907 }
908 }
38193a09 909 sv_unmagic(sv, how) ;
55497cff 910 RETPUSHYES;
a0d0e21e
LW		 911}
912
c07a80fd 913PP(pp_tied)
914{
97aff369 915 dVAR;
39644a26 916 dSP;
1b6737cc 917 const MAGIC *mg;
33c27489 918 SV *sv = POPs;
1df70142 919 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 920 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54
AMS		 921
922 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
923 RETPUSHUNDEF;
c07a80fd 924
155aba94 925 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 926 SV *osv = SvTIED_obj(sv, mg);
927 if (osv == mg->mg_obj)
928 osv = sv_mortalcopy(osv);
929 PUSHs(osv);
930 RETURN;
c07a80fd 931 }
c07a80fd 932 RETPUSHUNDEF;
933}
934
a0d0e21e
LW		 935PP(pp_dbmopen)
936{
27da23d5 937 dVAR; dSP;
a0d0e21e
LW		 938 dPOPPOPssrl;
939 HV* stash;
940 GV *gv;
a0d0e21e 941
1b6737cc 942 HV * const hv = (HV*)POPs;
7c58897d 943 SV * const sv = sv_2mortal(newSVpvs("AnyDBM_File"));
a0d0e21e 944 stash = gv_stashsv(sv, FALSE);
8ebc5c01 945 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 946 PUTBACK;
864dbfa3 947 require_pv("AnyDBM_File.pm");
a0d0e21e 948 SPAGAIN;
8ebc5c01 949 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 950 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 951 }
952
57d3b86d 953 ENTER;
924508f0 954 PUSHMARK(SP);
6b05c17a 955
924508f0 956 EXTEND(SP, 5);
a0d0e21e
LW		 957 PUSHs(sv);
958 PUSHs(left);
959 if (SvIV(right))
b448e4fe 960 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
a0d0e21e 961 else
b448e4fe 962 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
a0d0e21e 963 PUSHs(right);
57d3b86d 964 PUTBACK;
864dbfa3 965 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 966 SPAGAIN;
967
968 if (!sv_isobject(TOPs)) {
924508f0
GS		 969 SP--;
970 PUSHMARK(SP);
a0d0e21e
LW		 971 PUSHs(sv);
972 PUSHs(left);
b448e4fe 973 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
a0d0e21e 974 PUSHs(right);
a0d0e21e 975 PUTBACK;
864dbfa3 976 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 977 SPAGAIN;
978 }
979
6b05c17a 980 if (sv_isobject(TOPs)) {
14befaf4 981 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
bd61b366 982 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 983 }
a0d0e21e
LW		 984 LEAVE;
985 RETURN;
986}
987
a0d0e21e
LW		 988PP(pp_sselect)
989{
a0d0e21e 990#ifdef HAS_SELECT
97aff369 991 dVAR; dSP; dTARGET;
a0d0e21e
LW		 992 register I32 i;
993 register I32 j;
994 register char *s;
995 register SV *sv;
65202027 996 NV value;
a0d0e21e
LW		 997 I32 maxlen = 0;
998 I32 nfound;
999 struct timeval timebuf;
1000 struct timeval *tbuf = &timebuf;
1001 I32 growsize;
1002 char *fd_sets[4];
1003#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1004 I32 masksize;
1005 I32 offset;
1006 I32 k;
1007
1008# if BYTEORDER & 0xf0000
1009# define ORDERBYTE (0x88888888 - BYTEORDER)
1010# else
1011# define ORDERBYTE (0x4444 - BYTEORDER)
1012# endif
1013
1014#endif
1015
1016 SP -= 4;
1017 for (i = 1; i <= 3; i++) {
c4420975 1018 SV * const sv = SP[i];
15547071
GA		 1019 if (!SvOK(sv))
1020 continue;
1021 if (SvREADONLY(sv)) {
729c079f
NC		 1022 if (SvIsCOW(sv))
1023 sv_force_normal_flags(sv, 0);
15547071 1024 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
729c079f
NC		 1025 DIE(aTHX_ PL_no_modify);
1026 }
4ef2275c
GA		 1027 if (!SvPOK(sv)) {
1028 if (ckWARN(WARN_MISC))
1029 Perl_warner(aTHX_ packWARN(WARN_MISC), "Non-string passed as bitmask");
1030 SvPV_force_nolen(sv); /* force string conversion */
1031 }
729c079f 1032 j = SvCUR(sv);
a0d0e21e
LW		 1033 if (maxlen < j)
1034 maxlen = j;
1035 }
1036
5ff3f7a4 1037/* little endians can use vecs directly */
e366b469 1038#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1039# ifdef NFDBITS
a0d0e21e 1040
5ff3f7a4
GS		 1041# ifndef NBBY
1042# define NBBY 8
1043# endif
a0d0e21e
LW		 1044
1045 masksize = NFDBITS / NBBY;
5ff3f7a4 1046# else
a0d0e21e 1047 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1048# endif
a0d0e21e
LW		 1049 Zero(&fd_sets[0], 4, char*);
1050#endif
1051
ad517f75
MHM		 1052# if SELECT_MIN_BITS == 1
1053 growsize = sizeof(fd_set);
1054# else
1055# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1056# undef SELECT_MIN_BITS
1057# define SELECT_MIN_BITS __FD_SETSIZE
1058# endif
e366b469
PG		 1059 /* If SELECT_MIN_BITS is greater than one we most probably will want
1060 * to align the sizes with SELECT_MIN_BITS/8 because for example
1061 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1062 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1063 * on (sets/tests/clears bits) is 32 bits. */
1064 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG		 1065# endif
1066
a0d0e21e
LW		 1067 sv = SP[4];
1068 if (SvOK(sv)) {
1069 value = SvNV(sv);
1070 if (value < 0.0)
1071 value = 0.0;
1072 timebuf.tv_sec = (long)value;
65202027 1073 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1074 timebuf.tv_usec = (long)(value * 1000000.0);
1075 }
1076 else
4608196e 1077 tbuf = NULL;
a0d0e21e
LW		 1078
1079 for (i = 1; i <= 3; i++) {
1080 sv = SP[i];
15547071 1081 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW		 1082 fd_sets[i] = 0;
1083 continue;
1084 }
4ef2275c 1085 assert(SvPOK(sv));
a0d0e21e
LW		 1086 j = SvLEN(sv);
1087 if (j < growsize) {
1088 Sv_Grow(sv, growsize);
a0d0e21e 1089 }
c07a80fd 1090 j = SvCUR(sv);
1091 s = SvPVX(sv) + j;
1092 while (++j <= growsize) {
1093 *s++ = '\0';
1094 }
1095
a0d0e21e
LW		 1096#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1097 s = SvPVX(sv);
a02a5408 1098 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW		 1099 for (offset = 0; offset < growsize; offset += masksize) {
1100 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1101 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1102 }
1103#else
1104 fd_sets[i] = SvPVX(sv);
1105#endif
1106 }
1107
dc4c69d9
JH		 1108#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1109 /* Can't make just the (void*) conditional because that would be
1110 * cpp #if within cpp macro, and not all compilers like that. */
1111 nfound = PerlSock_select(
1112 maxlen * 8,
1113 (Select_fd_set_t) fd_sets[1],
1114 (Select_fd_set_t) fd_sets[2],
1115 (Select_fd_set_t) fd_sets[3],
1116 (void*) tbuf); /* Workaround for compiler bug. */
1117#else
6ad3d225 1118 nfound = PerlSock_select(
a0d0e21e
LW		 1119 maxlen * 8,
1120 (Select_fd_set_t) fd_sets[1],
1121 (Select_fd_set_t) fd_sets[2],
1122 (Select_fd_set_t) fd_sets[3],
1123 tbuf);
dc4c69d9 1124#endif
a0d0e21e
LW		 1125 for (i = 1; i <= 3; i++) {
1126 if (fd_sets[i]) {
1127 sv = SP[i];
1128#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1129 s = SvPVX(sv);
1130 for (offset = 0; offset < growsize; offset += masksize) {
1131 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1132 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1133 }
1134 Safefree(fd_sets[i]);
1135#endif
1136 SvSETMAGIC(sv);
1137 }
1138 }
1139
4189264e 1140 PUSHi(nfound);
a0d0e21e 1141 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1142 value = (NV)(timebuf.tv_sec) +
1143 (NV)(timebuf.tv_usec) / 1000000.0;
7c58897d 1144 PUSHs(sv_2mortal(newSVnv(value)));
a0d0e21e
LW		 1145 }
1146 RETURN;
1147#else
cea2e8a9 1148 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1149#endif
1150}
1151
4633a7c4 1152void
864dbfa3 1153Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1154{
97aff369 1155 dVAR;
b37c2d43 1156 SvREFCNT_inc_simple_void(gv);
3280af22
NIS		 1157 if (PL_defoutgv)
1158 SvREFCNT_dec(PL_defoutgv);
1159 PL_defoutgv = gv;
4633a7c4
LW		 1160}
1161
a0d0e21e
LW		 1162PP(pp_select)
1163{
97aff369 1164 dVAR; dSP; dTARGET;
4633a7c4 1165 HV *hv;
a79db61d 1166 GV * const newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : NULL;
7452cf6a 1167 GV * egv = GvEGV(PL_defoutgv);
4633a7c4 1168
4633a7c4 1169 if (!egv)
3280af22 1170 egv = PL_defoutgv;
4633a7c4
LW		 1171 hv = GvSTASH(egv);
1172 if (! hv)
3280af22 1173 XPUSHs(&PL_sv_undef);
4633a7c4 1174 else {
c4420975 1175 GV * const * const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1176 if (gvp && *gvp == egv) {
bd61b366 1177 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1178 XPUSHTARG;
1179 }
1180 else {
1181 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1182 }
4633a7c4
LW		 1183 }
1184
1185 if (newdefout) {
ded8aa31
GS		 1186 if (!GvIO(newdefout))
1187 gv_IOadd(newdefout);
4633a7c4
LW		 1188 setdefout(newdefout);
1189 }
1190
a0d0e21e
LW		 1191 RETURN;
1192}
1193
1194PP(pp_getc)
1195{
27da23d5 1196 dVAR; dSP; dTARGET;
90133b69 1197 IO *io = NULL;
1b6737cc 1198 GV * const gv = (MAXARG==0) ? PL_stdingv : (GV*)POPs;
2ae324a7 1199
a79db61d
AL		 1200 if (gv && (io = GvIO(gv))) {
1201 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1202 if (mg) {
1203 const I32 gimme = GIMME_V;
1204 PUSHMARK(SP);
1205 XPUSHs(SvTIED_obj((SV*)io, mg));
1206 PUTBACK;
1207 ENTER;
1208 call_method("GETC", gimme);
1209 LEAVE;
1210 SPAGAIN;
1211 if (gimme == G_SCALAR)
1212 SvSetMagicSV_nosteal(TARG, TOPs);
1213 RETURN;
1214 }
2ae324a7 1215 }
90133b69 1216 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
041457d9
DM		 1217 if ((!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1218 && ckWARN2(WARN_UNOPENED,WARN_CLOSED))
90133b69 1219 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 1220 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1221 RETPUSHUNDEF;
90133b69 1222 }
bbce6d69 1223 TAINT;
c69006e4 1224 sv_setpvn(TARG, " ", 1);
9bc64814 1225 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1226 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1227 /* Find out how many bytes the char needs */
aa07b2f6 1228 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS		 1229 if (len > 1) {
1230 SvGROW(TARG,len+1);
1231 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1232 SvCUR_set(TARG,1+len);
1233 }
1234 SvUTF8_on(TARG);
1235 }
a0d0e21e
LW		 1236 PUSHTARG;
1237 RETURN;
1238}
1239
76e3520e 1240STATIC OP *
cea2e8a9 1241S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1242{
27da23d5 1243 dVAR;
c09156bb 1244 register PERL_CONTEXT *cx;
f54cb97a 1245 const I32 gimme = GIMME_V;
a0d0e21e
LW		 1246
1247 ENTER;
1248 SAVETMPS;
1249
146174a9 1250 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
a0d0e21e 1251 PUSHFORMAT(cx);
f39bc417 1252 cx->blk_sub.retop = retop;
fd617465
DM		 1253 SAVECOMPPAD();
1254 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
a0d0e21e 1255
4633a7c4 1256 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1257 return CvSTART(cv);
1258}
1259
1260PP(pp_enterwrite)
1261{
97aff369 1262 dVAR;
39644a26 1263 dSP;
a0d0e21e
LW		 1264 register GV *gv;
1265 register IO *io;
1266 GV *fgv;
1267 CV *cv;
1268
1269 if (MAXARG == 0)
3280af22 1270 gv = PL_defoutgv;
a0d0e21e
LW		 1271 else {
1272 gv = (GV*)POPs;
1273 if (!gv)
3280af22 1274 gv = PL_defoutgv;
a0d0e21e
LW		 1275 }
1276 EXTEND(SP, 1);
1277 io = GvIO(gv);
1278 if (!io) {
1279 RETPUSHNO;
1280 }
1281 if (IoFMT_GV(io))
1282 fgv = IoFMT_GV(io);
1283 else
1284 fgv = gv;
1285
a79db61d
AL		 1286 if (!fgv)
1287 goto not_a_format_reference;
1288
a0d0e21e 1289 cv = GvFORM(fgv);
a0d0e21e 1290 if (!cv) {
f4a7049d
NC		 1291 SV * const tmpsv = sv_newmortal();
1292 const char *name;
1293 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1294 name = SvPV_nolen_const(tmpsv);
1295 if (name && *name)
1296 DIE(aTHX_ "Undefined format \"%s\" called", name);
a79db61d
AL		 1297
1298 not_a_format_reference:
cea2e8a9 1299 DIE(aTHX_ "Not a format reference");
a0d0e21e 1300 }
44a8e56a 1301 if (CvCLONE(cv))
1302 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1303
44a8e56a 1304 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1305 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1306}
1307
1308PP(pp_leavewrite)
1309{
27da23d5 1310 dVAR; dSP;
1b6737cc
AL		 1311 GV * const gv = cxstack[cxstack_ix].blk_sub.gv;
1312 register IO * const io = GvIOp(gv);
8b8cacda 1313 PerlIO *ofp;
760ac839 1314 PerlIO *fp;
8772537c
AL		 1315 SV **newsp;
1316 I32 gimme;
c09156bb 1317 register PERL_CONTEXT *cx;
a0d0e21e 1318
8b8cacda
B		 1319 if (!io || !(ofp = IoOFP(io)))
1320 goto forget_top;
1321
760ac839 1322 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1323 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1324
3280af22
NIS		 1325 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1326 PL_formtarget != PL_toptarget)
a0d0e21e 1327 {
4633a7c4
LW		 1328 GV *fgv;
1329 CV *cv;
a0d0e21e
LW		 1330 if (!IoTOP_GV(io)) {
1331 GV *topgv;
a0d0e21e
LW		 1332
1333 if (!IoTOP_NAME(io)) {
1b6737cc 1334 SV *topname;
a0d0e21e
LW		 1335 if (!IoFMT_NAME(io))
1336 IoFMT_NAME(io) = savepv(GvNAME(gv));
0bd0581c 1337 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
f776e3cd 1338 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1339 if ((topgv && GvFORM(topgv)) ||
fafc274c 1340 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1341 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1342 else
89529cee 1343 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1344 }
f776e3cd 1345 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1346 if (!topgv || !GvFORM(topgv)) {
b929a54b 1347 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1348 goto forget_top;
1349 }
1350 IoTOP_GV(io) = topgv;
1351 }
748a9306
LW		 1352 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1353 I32 lines = IoLINES_LEFT(io);
504618e9 1354 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD		 1355 if (lines <= 0) /* Yow, header didn't even fit!!! */
1356 goto forget_top;
748a9306
LW		 1357 while (lines-- > 0) {
1358 s = strchr(s, '\n');
1359 if (!s)
1360 break;
1361 s++;
1362 }
1363 if (s) {
f54cb97a 1364 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1365 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1366 do_print(PL_formtarget, ofp);
1367 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1368 sv_chop(PL_formtarget, s);
1369 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1370 }
1371 }
a0d0e21e 1372 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1373 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1374 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1375 IoPAGE(io)++;
3280af22 1376 PL_formtarget = PL_toptarget;
748a9306 1377 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1378 fgv = IoTOP_GV(io);
1379 if (!fgv)
cea2e8a9 1380 DIE(aTHX_ "bad top format reference");
4633a7c4 1381 cv = GvFORM(fgv);
1df70142
AL		 1382 if (!cv) {
1383 SV * const sv = sv_newmortal();
b464bac0 1384 const char *name;
bd61b366 1385 gv_efullname4(sv, fgv, NULL, FALSE);
e62f0680 1386 name = SvPV_nolen_const(sv);
2dd78f96 1387 if (name && *name)
0e528f24
JH		 1388 DIE(aTHX_ "Undefined top format \"%s\" called", name);
1389 else
1390 DIE(aTHX_ "Undefined top format called");
4633a7c4 1391 }
0e528f24 1392 if (cv && CvCLONE(cv))
44a8e56a 1393 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
0e528f24 1394 return doform(cv, gv, PL_op);
a0d0e21e
LW		 1395 }
1396
1397 forget_top:
3280af22 1398 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1399 POPFORMAT(cx);
1400 LEAVE;
1401
1402 fp = IoOFP(io);
1403 if (!fp) {
599cee73 1404 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1405 if (IoIFP(io))
1406 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1407 else if (ckWARN(WARN_CLOSED))
bc37a18f 1408 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1409 }
3280af22 1410 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1411 }
1412 else {
3280af22 1413 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1414 if (ckWARN(WARN_IO))
9014280d 1415 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1416 }
d75029d0 1417 if (!do_print(PL_formtarget, fp))
3280af22 1418 PUSHs(&PL_sv_no);
a0d0e21e 1419 else {
3280af22
NIS		 1420 FmLINES(PL_formtarget) = 0;
1421 SvCUR_set(PL_formtarget, 0);
1422 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1423 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1424 (void)PerlIO_flush(fp);
3280af22 1425 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1426 }
1427 }
9cbac4c7 1428 /* bad_ofp: */
3280af22 1429 PL_formtarget = PL_bodytarget;
a0d0e21e 1430 PUTBACK;
29033a8a
SH		 1431 PERL_UNUSED_VAR(newsp);
1432 PERL_UNUSED_VAR(gimme);
f39bc417 1433 return cx->blk_sub.retop;
a0d0e21e
LW		 1434}
1435
1436PP(pp_prtf)
1437{
27da23d5 1438 dVAR; dSP; dMARK; dORIGMARK;
a0d0e21e 1439 IO *io;
760ac839 1440 PerlIO *fp;
26db47c4 1441 SV *sv;
a0d0e21e 1442
c4420975 1443 GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv;
46fc3d4c 1444
a79db61d
AL		 1445 if (gv && (io = GvIO(gv))) {
1446 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1447 if (mg) {
1448 if (MARK == ORIGMARK) {
1449 MEXTEND(SP, 1);
1450 ++MARK;
1451 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1452 ++SP;
1453 }
1454 PUSHMARK(MARK - 1);
1455 *MARK = SvTIED_obj((SV*)io, mg);
1456 PUTBACK;
1457 ENTER;
1458 call_method("PRINTF", G_SCALAR);
1459 LEAVE;
1460 SPAGAIN;
1461 MARK = ORIGMARK + 1;
1462 *MARK = *SP;
1463 SP = MARK;
1464 RETURN;
1465 }
46fc3d4c 1466 }
1467
561b68a9 1468 sv = newSV(0);
a0d0e21e 1469 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1470 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1471 report_evil_fh(gv, io, PL_op->op_type);
93189314 1472 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1473 goto just_say_no;
1474 }
1475 else if (!(fp = IoOFP(io))) {
599cee73 1476 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1477 if (IoIFP(io))
1478 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1479 else if (ckWARN(WARN_CLOSED))
bc37a18f 1480 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1481 }
93189314 1482 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1483 goto just_say_no;
1484 }
1485 else {
1486 do_sprintf(sv, SP - MARK, MARK + 1);
1487 if (!do_print(sv, fp))
1488 goto just_say_no;
1489
1490 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1491 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1492 goto just_say_no;
1493 }
1494 SvREFCNT_dec(sv);
1495 SP = ORIGMARK;
3280af22 1496 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1497 RETURN;
1498
1499 just_say_no:
1500 SvREFCNT_dec(sv);
1501 SP = ORIGMARK;
3280af22 1502 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1503 RETURN;
1504}
1505
c07a80fd 1506PP(pp_sysopen)
1507{
97aff369 1508 dVAR;
39644a26 1509 dSP;
1df70142
AL		 1510 const int perm = (MAXARG > 3) ? POPi : 0666;
1511 const int mode = POPi;
1b6737cc
AL		 1512 SV * const sv = POPs;
1513 GV * const gv = (GV *)POPs;
1514 STRLEN len;
c07a80fd 1515
4592e6ca 1516 /* Need TIEHANDLE method ? */
1b6737cc 1517 const char * const tmps = SvPV_const(sv, len);
e62f0680 1518 /* FIXME? do_open should do const */
4608196e 1519 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1520 IoLINES(GvIOp(gv)) = 0;
3280af22 1521 PUSHs(&PL_sv_yes);
c07a80fd 1522 }
1523 else {
3280af22 1524 PUSHs(&PL_sv_undef);
c07a80fd 1525 }
1526 RETURN;
1527}
1528
a0d0e21e
LW		 1529PP(pp_sysread)
1530{
27da23d5 1531 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1532 int offset;
a0d0e21e
LW		 1533 IO *io;
1534 char *buffer;
5b54f415 1535 SSize_t length;
eb5c063a 1536 SSize_t count;
1e422769 1537 Sock_size_t bufsize;
748a9306 1538 SV *bufsv;
a0d0e21e 1539 STRLEN blen;
eb5c063a 1540 int fp_utf8;
1dd30107
NC		 1541 int buffer_utf8;
1542 SV *read_target;
eb5c063a
NIS		 1543 Size_t got = 0;
1544 Size_t wanted;
1d636c13 1545 bool charstart = FALSE;
87330c3c
JH		 1546 STRLEN charskip = 0;
1547 STRLEN skip = 0;
a0d0e21e 1548
1b6737cc 1549 GV * const gv = (GV*)*++MARK;
5b468f54 1550 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1551 && gv && (io = GvIO(gv)) )
137443ea 1552 {
1b6737cc
AL		 1553 const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1554 if (mg) {
1555 SV *sv;
1556 PUSHMARK(MARK-1);
1557 *MARK = SvTIED_obj((SV*)io, mg);
1558 ENTER;
1559 call_method("READ", G_SCALAR);
1560 LEAVE;
1561 SPAGAIN;
1562 sv = POPs;
1563 SP = ORIGMARK;
1564 PUSHs(sv);
1565 RETURN;
1566 }
2ae324a7 1567 }
1568
a0d0e21e
LW		 1569 if (!gv)
1570 goto say_undef;
748a9306 1571 bufsv = *++MARK;
ff68c719 1572 if (! SvOK(bufsv))
1573 sv_setpvn(bufsv, "", 0);
a0d0e21e 1574 length = SvIVx(*++MARK);
748a9306 1575 SETERRNO(0,0);
a0d0e21e
LW		 1576 if (MARK < SP)
1577 offset = SvIVx(*++MARK);
1578 else
1579 offset = 0;
1580 io = GvIO(gv);
b5fe5ca2
SR		 1581 if (!io || !IoIFP(io)) {
1582 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1583 report_evil_fh(gv, io, PL_op->op_type);
1584 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1585 goto say_undef;
b5fe5ca2 1586 }
0064a8a9 1587 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1588 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1589 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1590 SvUTF8_on(bufsv);
9b9d7ce8 1591 buffer_utf8 = 0;
7d59b7e4
NIS		 1592 }
1593 else {
1594 buffer = SvPV_force(bufsv, blen);
1dd30107 1595 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4
NIS		 1596 }
1597 if (length < 0)
1598 DIE(aTHX_ "Negative length");
eb5c063a 1599 wanted = length;
7d59b7e4 1600
d0965105
JH		 1601 charstart = TRUE;
1602 charskip = 0;
87330c3c 1603 skip = 0;
d0965105 1604
a0d0e21e 1605#ifdef HAS_SOCKET
533c011a 1606 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1607 char namebuf[MAXPATHLEN];
17a8c7ba 1608#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
490ab354
JH		 1609 bufsize = sizeof (struct sockaddr_in);
1610#else
46fc3d4c 1611 bufsize = sizeof namebuf;
490ab354 1612#endif
abf95952
IZ		 1613#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1614 if (bufsize >= 256)
1615 bufsize = 255;
1616#endif
eb160463 1617 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1618 /* 'offset' means 'flags' here */
eb5c063a 1619 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
46fc3d4c 1620 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1621 if (count < 0)
a0d0e21e 1622 RETPUSHUNDEF;
4107cc59
OF		 1623#ifdef EPOC
1624 /* Bogus return without padding */
1625 bufsize = sizeof (struct sockaddr_in);
1626#endif
eb5c063a 1627 SvCUR_set(bufsv, count);
748a9306
LW		 1628 *SvEND(bufsv) = '\0';
1629 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1630 if (fp_utf8)
1631 SvUTF8_on(bufsv);
748a9306 1632 SvSETMAGIC(bufsv);
aac0dd9a 1633 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1634 if (!(IoFLAGS(io) & IOf_UNTAINT))
1635 SvTAINTED_on(bufsv);
a0d0e21e 1636 SP = ORIGMARK;
46fc3d4c 1637 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1638 PUSHs(TARG);
1639 RETURN;
1640 }
1641#else
911d147d 1642 if (PL_op->op_type == OP_RECV)
cea2e8a9 1643 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1644#endif
eb5c063a
NIS		 1645 if (DO_UTF8(bufsv)) {
1646 /* offset adjust in characters not bytes */
1647 blen = sv_len_utf8(bufsv);
7d59b7e4 1648 }
bbce6d69 1649 if (offset < 0) {
eb160463 1650 if (-offset > (int)blen)
cea2e8a9 1651 DIE(aTHX_ "Offset outside string");
bbce6d69 1652 offset += blen;
1653 }
eb5c063a
NIS		 1654 if (DO_UTF8(bufsv)) {
1655 /* convert offset-as-chars to offset-as-bytes */
6960c29a
CH		 1656 if (offset >= (int)blen)
1657 offset += SvCUR(bufsv) - blen;
1658 else
1659 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS		 1660 }
1661 more_bytes:
cd52b7b2 1662 bufsize = SvCUR(bufsv);
1dd30107
NC		 1663 /* Allocating length + offset + 1 isn't perfect in the case of reading
1664 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1665 unduly.
1666 (should be 2 * length + offset + 1, or possibly something longer if
1667 PL_encoding is true) */
eb160463 1668 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
27da23d5 1669 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
cd52b7b2 1670 Zero(buffer+bufsize, offset-bufsize, char);
1671 }
eb5c063a 1672 buffer = buffer + offset;
1dd30107
NC		 1673 if (!buffer_utf8) {
1674 read_target = bufsv;
1675 } else {
1676 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1677 concatenate it to the current buffer. */
1678
1679 /* Truncate the existing buffer to the start of where we will be
1680 reading to: */
1681 SvCUR_set(bufsv, offset);
1682
1683 read_target = sv_newmortal();
862a34c6 1684 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1685 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1686 }
eb5c063a 1687
533c011a 1688 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1689#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1690 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1691 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1692 buffer, length, 0);
a7092146
GS		 1693 }
1694 else
1695#endif
1696 {
eb5c063a
NIS		 1697 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1698 buffer, length);
a7092146 1699 }
a0d0e21e
LW		 1700 }
1701 else
1702#ifdef HAS_SOCKET__bad_code_maybe
50952442 1703 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1704 char namebuf[MAXPATHLEN];
490ab354
JH		 1705#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1706 bufsize = sizeof (struct sockaddr_in);
1707#else
46fc3d4c 1708 bufsize = sizeof namebuf;
490ab354 1709#endif
eb5c063a 1710 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1711 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1712 }
1713 else
1714#endif
3b02c43c 1715 {
eb5c063a
NIS		 1716 count = PerlIO_read(IoIFP(io), buffer, length);
1717 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1718 if (count == 0 && PerlIO_error(IoIFP(io)))
1719 count = -1;
3b02c43c 1720 }
eb5c063a 1721 if (count < 0) {
a00b5bd3 1722 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
6e6ef6b2 1723 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
a0d0e21e 1724 goto say_undef;
af8c498a 1725 }
aa07b2f6 1726 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1727 *SvEND(read_target) = '\0';
1728 (void)SvPOK_only(read_target);
0064a8a9 1729 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1730 /* Look at utf8 we got back and count the characters */
1df70142 1731 const char *bend = buffer + count;
eb5c063a 1732 while (buffer < bend) {
d0965105
JH		 1733 if (charstart) {
1734 skip = UTF8SKIP(buffer);
1735 charskip = 0;
1736 }
1737 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1738 /* partial character - try for rest of it */
1739 length = skip - (bend-buffer);
aa07b2f6 1740 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1741 charstart = FALSE;
1742 charskip += count;
eb5c063a
NIS		 1743 goto more_bytes;
1744 }
1745 else {
1746 got++;
1747 buffer += skip;
d0965105
JH		 1748 charstart = TRUE;
1749 charskip = 0;
eb5c063a
NIS		 1750 }
1751 }
1752 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1753 provided amount read (count) was what was requested (length)
1754 */
1755 if (got < wanted && count == length) {
d0965105 1756 length = wanted - got;
aa07b2f6 1757 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1758 goto more_bytes;
1759 }
1760 /* return value is character count */
1761 count = got;
1762 SvUTF8_on(bufsv);
1763 }
1dd30107
NC		 1764 else if (buffer_utf8) {
1765 /* Let svcatsv upgrade the bytes we read in to utf8.
1766 The buffer is a mortal so will be freed soon. */
1767 sv_catsv_nomg(bufsv, read_target);
1768 }
748a9306 1769 SvSETMAGIC(bufsv);
aac0dd9a 1770 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1771 if (!(IoFLAGS(io) & IOf_UNTAINT))
1772 SvTAINTED_on(bufsv);
a0d0e21e 1773 SP = ORIGMARK;
eb5c063a 1774 PUSHi(count);
a0d0e21e
LW		 1775 RETURN;
1776
1777 say_undef:
1778 SP = ORIGMARK;
1779 RETPUSHUNDEF;
1780}
1781
a0d0e21e
LW		 1782PP(pp_send)
1783{
27da23d5 1784 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1785 IO *io;
748a9306 1786 SV *bufsv;
83003860 1787 const char *buffer;
8c99d73e 1788 SSize_t retval;
a0d0e21e 1789 STRLEN blen;
c9cb0f41 1790 STRLEN orig_blen_bytes;
64a1bc8e 1791 const int op_type = PL_op->op_type;
c9cb0f41
NC		 1792 bool doing_utf8;
1793 U8 *tmpbuf = NULL;
64a1bc8e 1794
7452cf6a 1795 GV *const gv = (GV*)*++MARK;
14befaf4 1796 if (PL_op->op_type == OP_SYSWRITE
a79db61d
AL		 1797 && gv && (io = GvIO(gv))) {
1798 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1799 if (mg) {
1800 SV *sv;
64a1bc8e 1801
a79db61d
AL		 1802 if (MARK == SP - 1) {
1803 EXTEND(SP, 1000);
1804 sv = sv_2mortal(newSViv(sv_len(*SP)));
1805 PUSHs(sv);
1806 PUTBACK;
1807 }
1808
1809 PUSHMARK(ORIGMARK);
1810 *(ORIGMARK+1) = SvTIED_obj((SV*)io, mg);
1811 ENTER;
1812 call_method("WRITE", G_SCALAR);
1813 LEAVE;
1814 SPAGAIN;
1815 sv = POPs;
1816 SP = ORIGMARK;
64a1bc8e 1817 PUSHs(sv);
a79db61d 1818 RETURN;
64a1bc8e 1819 }
1d603a67 1820 }
a0d0e21e
LW		 1821 if (!gv)
1822 goto say_undef;
64a1bc8e 1823
748a9306 1824 bufsv = *++MARK;
64a1bc8e 1825
748a9306 1826 SETERRNO(0,0);
a0d0e21e
LW		 1827 io = GvIO(gv);
1828 if (!io || !IoIFP(io)) {
8c99d73e 1829 retval = -1;
bc37a18f
RG		 1830 if (ckWARN(WARN_CLOSED))
1831 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 1832 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1833 goto say_undef;
1834 }
1835
c9cb0f41
NC		 1836 /* Do this first to trigger any overloading. */
1837 buffer = SvPV_const(bufsv, blen);
1838 orig_blen_bytes = blen;
1839 doing_utf8 = DO_UTF8(bufsv);
1840
7d59b7e4 1841 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7 1842 if (!SvUTF8(bufsv)) {
c9cb0f41
NC		 1843 /* We don't modify the original scalar. */
1844 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1845 buffer = (char *) tmpbuf;
1846 doing_utf8 = TRUE;
1847 }
a0d0e21e 1848 }
c9cb0f41
NC		 1849 else if (doing_utf8) {
1850 STRLEN tmplen = blen;
a79db61d 1851 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC		 1852 if (!doing_utf8) {
1853 tmpbuf = result;
1854 buffer = (char *) tmpbuf;
1855 blen = tmplen;
1856 }
1857 else {
1858 assert((char *)result == buffer);
1859 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1860 }
7d59b7e4
NIS		 1861 }
1862
64a1bc8e 1863 if (op_type == OP_SYSWRITE) {
c9cb0f41
NC		 1864 Size_t length = 0; /* This length is in characters. */
1865 STRLEN blen_chars;
7d59b7e4 1866 IV offset;
c9cb0f41
NC		 1867
1868 if (doing_utf8) {
1869 if (tmpbuf) {
1870 /* The SV is bytes, and we've had to upgrade it. */
1871 blen_chars = orig_blen_bytes;
1872 } else {
1873 /* The SV really is UTF-8. */
1874 if (SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1875 /* Don't call sv_len_utf8 again because it will call magic
1876 or overloading a second time, and we might get back a
1877 different result. */
9a206dfd 1878 blen_chars = utf8_length((U8*)buffer, (U8*)buffer + blen);
c9cb0f41
NC		 1879 } else {
1880 /* It's safe, and it may well be cached. */
1881 blen_chars = sv_len_utf8(bufsv);
1882 }
1883 }
1884 } else {
1885 blen_chars = blen;
1886 }
1887
1888 if (MARK >= SP) {
1889 length = blen_chars;
1890 } else {
1891#if Size_t_size > IVSIZE
1892 length = (Size_t)SvNVx(*++MARK);
1893#else
1894 length = (Size_t)SvIVx(*++MARK);
1895#endif
4b0c4b6f
NC		 1896 if ((SSize_t)length < 0) {
1897 Safefree(tmpbuf);
c9cb0f41 1898 DIE(aTHX_ "Negative length");
4b0c4b6f 1899 }
7d59b7e4 1900 }
c9cb0f41 1901
bbce6d69 1902 if (MARK < SP) {
a0d0e21e 1903 offset = SvIVx(*++MARK);
bbce6d69 1904 if (offset < 0) {
4b0c4b6f
NC		 1905 if (-offset > (IV)blen_chars) {
1906 Safefree(tmpbuf);
cea2e8a9 1907 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1908 }
c9cb0f41 1909 offset += blen_chars;
4b0c4b6f
NC		 1910 } else if (offset >= (IV)blen_chars && blen_chars > 0) {
1911 Safefree(tmpbuf);
cea2e8a9 1912 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1913 }
bbce6d69 1914 } else
a0d0e21e 1915 offset = 0;
c9cb0f41
NC		 1916 if (length > blen_chars - offset)
1917 length = blen_chars - offset;
1918 if (doing_utf8) {
1919 /* Here we convert length from characters to bytes. */
1920 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1921 /* Either we had to convert the SV, or the SV is magical, or
1922 the SV has overloading, in which case we can't or mustn't
1923 or mustn't call it again. */
1924
1925 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1926 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1927 } else {
1928 /* It's a real UTF-8 SV, and it's not going to change under
1929 us. Take advantage of any cache. */
1930 I32 start = offset;
1931 I32 len_I32 = length;
1932
1933 /* Convert the start and end character positions to bytes.
1934 Remember that the second argument to sv_pos_u2b is relative
1935 to the first. */
1936 sv_pos_u2b(bufsv, &start, &len_I32);
1937
1938 buffer += start;
1939 length = len_I32;
1940 }
7d59b7e4
NIS		 1941 }
1942 else {
1943 buffer = buffer+offset;
1944 }
a7092146 1945#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1946 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1947 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1948 buffer, length, 0);
a7092146
GS		 1949 }
1950 else
1951#endif
1952 {
94e4c244 1953 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1954 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1955 buffer, length);
a7092146 1956 }
a0d0e21e
LW		 1957 }
1958#ifdef HAS_SOCKET
64a1bc8e
NC		 1959 else {
1960 const int flags = SvIVx(*++MARK);
1961 if (SP > MARK) {
1962 STRLEN mlen;
1963 char * const sockbuf = SvPVx(*++MARK, mlen);
1964 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1965 flags, (struct sockaddr *)sockbuf, mlen);
1966 }
1967 else {
1968 retval
1969 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1970 }
a0d0e21e 1971 }
a0d0e21e
LW		 1972#else
1973 else
cea2e8a9 1974 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1975#endif
c9cb0f41 1976
8c99d73e 1977 if (retval < 0)
a0d0e21e
LW		 1978 goto say_undef;
1979 SP = ORIGMARK;
c9cb0f41 1980 if (doing_utf8)
f36eea10 1981 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 1982
a79db61d 1983 Safefree(tmpbuf);
8c99d73e
GS		 1984#if Size_t_size > IVSIZE
1985 PUSHn(retval);
1986#else
1987 PUSHi(retval);
1988#endif
a0d0e21e
LW		 1989 RETURN;
1990
1991 say_undef:
a79db61d 1992 Safefree(tmpbuf);
a0d0e21e
LW		 1993 SP = ORIGMARK;
1994 RETPUSHUNDEF;
1995}
1996
a0d0e21e
LW		 1997PP(pp_eof)
1998{
27da23d5 1999 dVAR; dSP;
a0d0e21e
LW		 2000 GV *gv;
2001
32da55ab 2002 if (MAXARG == 0) {
146174a9
CB		 2003 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
2004 IO *io;
ed2c6b9b 2005 gv = PL_last_in_gv = GvEGV(PL_argvgv);
146174a9
CB		 2006 io = GvIO(gv);
2007 if (io && !IoIFP(io)) {
2008 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2009 IoLINES(io) = 0;
2010 IoFLAGS(io) &= ~IOf_START;
4608196e 2011 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
146174a9
CB		 2012 sv_setpvn(GvSV(gv), "-", 1);
2013 SvSETMAGIC(GvSV(gv));
2014 }
2015 else if (!nextargv(gv))
2016 RETPUSHYES;
2017 }
2018 }
2019 else
2020 gv = PL_last_in_gv; /* eof */
2021 }
a0d0e21e 2022 else
146174a9 2023 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 2024
6136c704
AL		 2025 if (gv) {
2026 IO * const io = GvIO(gv);
2027 MAGIC * mg;
2028 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
2029 PUSHMARK(SP);
2030 XPUSHs(SvTIED_obj((SV*)io, mg));
2031 PUTBACK;
2032 ENTER;
2033 call_method("EOF", G_SCALAR);
2034 LEAVE;
2035 SPAGAIN;
2036 RETURN;
2037 }
4592e6ca
NIS		 2038 }
2039
54310121 2040 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 2041 RETURN;
2042}
2043
2044PP(pp_tell)
2045{
27da23d5 2046 dVAR; dSP; dTARGET;
301e8125 2047 GV *gv;
5b468f54 2048 IO *io;
a0d0e21e 2049
c4420975
AL		 2050 if (MAXARG != 0)
2051 PL_last_in_gv = (GV*)POPs;
2052 gv = PL_last_in_gv;
4592e6ca 2053
a79db61d
AL		 2054 if (gv && (io = GvIO(gv))) {
2055 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
2056 if (mg) {
2057 PUSHMARK(SP);
2058 XPUSHs(SvTIED_obj((SV*)io, mg));
2059 PUTBACK;
2060 ENTER;
2061 call_method("TELL", G_SCALAR);
2062 LEAVE;
2063 SPAGAIN;
2064 RETURN;
2065 }
4592e6ca
NIS		 2066 }
2067
146174a9
CB		 2068#if LSEEKSIZE > IVSIZE
2069 PUSHn( do_tell(gv) );
2070#else
a0d0e21e 2071 PUSHi( do_tell(gv) );
146174a9 2072#endif
a0d0e21e
LW		 2073 RETURN;
2074}
2075
137443ea 2076PP(pp_sysseek)
2077{
27da23d5 2078 dVAR; dSP;
1df70142 2079 const int whence = POPi;
146174a9 2080#if LSEEKSIZE > IVSIZE
7452cf6a 2081 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2082#else
7452cf6a 2083 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2084#endif
a0d0e21e 2085
7452cf6a 2086 GV * const gv = PL_last_in_gv = (GV*)POPs;
a79db61d 2087 IO *io;
4592e6ca 2088
a79db61d
AL		 2089 if (gv && (io = GvIO(gv))) {
2090 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
2091 if (mg) {
2092 PUSHMARK(SP);
2093 XPUSHs(SvTIED_obj((SV*)io, mg));
cb50131a 2094#if LSEEKSIZE > IVSIZE
a79db61d 2095 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
cb50131a 2096#else
a79db61d 2097 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 2098#endif
a79db61d
AL		 2099 XPUSHs(sv_2mortal(newSViv(whence)));
2100 PUTBACK;
2101 ENTER;
2102 call_method("SEEK", G_SCALAR);
2103 LEAVE;
2104 SPAGAIN;
2105 RETURN;
2106 }
4592e6ca
NIS		 2107 }
2108
533c011a 2109 if (PL_op->op_type == OP_SEEK)
8903cb82 2110 PUSHs(boolSV(do_seek(gv, offset, whence)));
2111 else {
0bcc34c2 2112 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2113 if (sought < 0)
146174a9
CB		 2114 PUSHs(&PL_sv_undef);
2115 else {
7452cf6a 2116 SV* const sv = sought ?
146174a9 2117#if LSEEKSIZE > IVSIZE
b448e4fe 2118 newSVnv((NV)sought)
146174a9 2119#else
b448e4fe 2120 newSViv(sought)
146174a9
CB		 2121#endif
2122 : newSVpvn(zero_but_true, ZBTLEN);
2123 PUSHs(sv_2mortal(sv));
2124 }
8903cb82 2125 }
a0d0e21e
LW		 2126 RETURN;
2127}
2128
2129PP(pp_truncate)
2130{
97aff369 2131 dVAR;
39644a26 2132 dSP;
8c99d73e
GS		 2133 /* There seems to be no consensus on the length type of truncate()
2134 * and ftruncate(), both off_t and size_t have supporters. In
2135 * general one would think that when using large files, off_t is
2136 * at least as wide as size_t, so using an off_t should be okay. */
2137 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2138 Off_t len;
a0d0e21e 2139
25342a55 2140#if Off_t_size > IVSIZE
0bcc34c2 2141 len = (Off_t)POPn;
8c99d73e 2142#else
0bcc34c2 2143 len = (Off_t)POPi;
8c99d73e
GS		 2144#endif
2145 /* Checking for length < 0 is problematic as the type might or
301e8125 2146 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2147 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2148 SETERRNO(0,0);
d05c1ba0 2149 {
d05c1ba0
JH		 2150 int result = 1;
2151 GV *tmpgv;
090bf15b
SR		 2152 IO *io;
2153
d05c1ba0 2154 if (PL_op->op_flags & OPf_SPECIAL) {
f776e3cd 2155 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
d05c1ba0 2156
090bf15b
SR		 2157 do_ftruncate_gv:
2158 if (!GvIO(tmpgv))
2159 result = 0;
d05c1ba0 2160 else {
090bf15b
SR		 2161 PerlIO *fp;
2162 io = GvIOp(tmpgv);
2163 do_ftruncate_io:
2164 TAINT_PROPER("truncate");
2165 if (!(fp = IoIFP(io))) {
2166 result = 0;
2167 }
2168 else {
2169 PerlIO_flush(fp);
cbdc8872 2170#ifdef HAS_TRUNCATE
090bf15b 2171 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2172#else
090bf15b 2173 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2174#endif
090bf15b
SR		 2175 result = 0;
2176 }
d05c1ba0 2177 }
cbdc8872 2178 }
d05c1ba0 2179 else {
7452cf6a 2180 SV * const sv = POPs;
83003860 2181 const char *name;
7a5fd60d 2182
d05c1ba0
JH		 2183 if (SvTYPE(sv) == SVt_PVGV) {
2184 tmpgv = (GV*)sv; /* *main::FRED for example */
090bf15b 2185 goto do_ftruncate_gv;
d05c1ba0
JH		 2186 }
2187 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2188 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
090bf15b
SR		 2189 goto do_ftruncate_gv;
2190 }
2191 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2192 io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
2193 goto do_ftruncate_io;
d05c1ba0 2194 }
1e422769 2195
83003860 2196 name = SvPV_nolen_const(sv);
d05c1ba0 2197 TAINT_PROPER("truncate");
cbdc8872 2198#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2199 if (truncate(name, len) < 0)
2200 result = 0;
cbdc8872 2201#else
d05c1ba0 2202 {
7452cf6a 2203 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2204
7452cf6a 2205 if (tmpfd < 0)
cbdc8872 2206 result = 0;
d05c1ba0
JH		 2207 else {
2208 if (my_chsize(tmpfd, len) < 0)
2209 result = 0;
2210 PerlLIO_close(tmpfd);
2211 }
cbdc8872 2212 }
a0d0e21e 2213#endif
d05c1ba0 2214 }
a0d0e21e 2215
d05c1ba0
JH		 2216 if (result)
2217 RETPUSHYES;
2218 if (!errno)
93189314 2219 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2220 RETPUSHUNDEF;
2221 }
a0d0e21e
LW		 2222}
2223
a0d0e21e
LW		 2224PP(pp_ioctl)
2225{
97aff369 2226 dVAR; dSP; dTARGET;
7452cf6a 2227 SV * const argsv = POPs;
1df70142 2228 const unsigned int func = POPu;
e1ec3a88 2229 const int optype = PL_op->op_type;
7452cf6a 2230 GV * const gv = (GV*)POPs;
4608196e 2231 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2232 char *s;
324aa91a 2233 IV retval;
a0d0e21e 2234
748a9306 2235 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2236 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2237 report_evil_fh(gv, io, PL_op->op_type);
93189314 2238 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2239 RETPUSHUNDEF;
2240 }
2241
748a9306 2242 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2243 STRLEN len;
324aa91a 2244 STRLEN need;
748a9306 2245 s = SvPV_force(argsv, len);
324aa91a
HF		 2246 need = IOCPARM_LEN(func);
2247 if (len < need) {
2248 s = Sv_Grow(argsv, need + 1);
2249 SvCUR_set(argsv, need);
a0d0e21e
LW		 2250 }
2251
748a9306 2252 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2253 }
2254 else {
748a9306 2255 retval = SvIV(argsv);
c529f79d 2256 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2257 }
2258
ed4b2e6b 2259 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2260
2261 if (optype == OP_IOCTL)
2262#ifdef HAS_IOCTL
76e3520e 2263 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2264#else
cea2e8a9 2265 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2266#endif
2267 else
c214f4ad
WB		 2268#ifndef HAS_FCNTL
2269 DIE(aTHX_ "fcntl is not implemented");
2270#else
55497cff 2271#if defined(OS2) && defined(__EMX__)
760ac839 2272 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2273#else
760ac839 2274 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2275#endif
6652bd42 2276#endif
a0d0e21e 2277
6652bd42 2278#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2279 if (SvPOK(argsv)) {
2280 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2281 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2282 OP_NAME(PL_op));
748a9306
LW		 2283 s[SvCUR(argsv)] = 0; /* put our null back */
2284 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2285 }
2286
2287 if (retval == -1)
2288 RETPUSHUNDEF;
2289 if (retval != 0) {
2290 PUSHi(retval);
2291 }
2292 else {
8903cb82 2293 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2294 }
4808266b 2295#endif
c214f4ad 2296 RETURN;
a0d0e21e
LW		 2297}
2298
2299PP(pp_flock)
2300{
9cad6237 2301#ifdef FLOCK
97aff369 2302 dVAR; dSP; dTARGET;
a0d0e21e 2303 I32 value;
bc37a18f 2304 IO *io = NULL;
760ac839 2305 PerlIO *fp;
7452cf6a
AL		 2306 const int argtype = POPi;
2307 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
16d20bd9 2308
bc37a18f
RG		 2309 if (gv && (io = GvIO(gv)))
2310 fp = IoIFP(io);
2311 else {
4608196e 2312 fp = NULL;
bc37a18f
RG		 2313 io = NULL;
2314 }
0bcc34c2 2315 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2316 if (fp) {
68dc0745 2317 (void)PerlIO_flush(fp);
76e3520e 2318 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2319 }
cb50131a 2320 else {
bc37a18f
RG		 2321 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2322 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2323 value = 0;
93189314 2324 SETERRNO(EBADF,RMS_IFI);
cb50131a 2325 }
a0d0e21e
LW		 2326 PUSHi(value);
2327 RETURN;
2328#else
cea2e8a9 2329 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2330#endif
2331}
2332
2333/* Sockets. */
2334
2335PP(pp_socket)
2336{
a0d0e21e 2337#ifdef HAS_SOCKET
97aff369 2338 dVAR; dSP;
7452cf6a
AL		 2339 const int protocol = POPi;
2340 const int type = POPi;
2341 const int domain = POPi;
2342 GV * const gv = (GV*)POPs;
2343 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e
LW		 2344 int fd;
2345
c289d2f7
JH		 2346 if (!gv || !io) {
2347 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2348 report_evil_fh(gv, io, PL_op->op_type);
5ee74a84 2349 if (io && IoIFP(io))
c289d2f7 2350 do_close(gv, FALSE);
93189314 2351 SETERRNO(EBADF,LIB_INVARG);
a0d0e21e
LW		 2352 RETPUSHUNDEF;
2353 }
2354
57171420
BS		 2355 if (IoIFP(io))
2356 do_close(gv, FALSE);
2357
a0d0e21e 2358 TAINT_PROPER("socket");
6ad3d225 2359 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2360 if (fd < 0)
2361 RETPUSHUNDEF;
460c8493
IZ		 2362 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2363 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2364 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2365 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2366 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2367 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2368 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2369 RETPUSHUNDEF;
2370 }
8d2a6795
GS		 2371#if defined(HAS_FCNTL) && defined(F_SETFD)
2372 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2373#endif
a0d0e21e 2374
d5ff79b3
OF		 2375#ifdef EPOC
2376 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2377#endif
2378
a0d0e21e
LW		 2379 RETPUSHYES;
2380#else
cea2e8a9 2381 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2382#endif
2383}
2384
2385PP(pp_sockpair)
2386{
c95c94b1 2387#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2388 dVAR; dSP;
7452cf6a
AL		 2389 const int protocol = POPi;
2390 const int type = POPi;
2391 const int domain = POPi;
2392 GV * const gv2 = (GV*)POPs;
2393 GV * const gv1 = (GV*)POPs;
2394 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2395 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
a0d0e21e
LW		 2396 int fd[2];
2397
c289d2f7
JH		 2398 if (!gv1 || !gv2 || !io1 || !io2) {
2399 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2400 if (!gv1 || !io1)
2401 report_evil_fh(gv1, io1, PL_op->op_type);
2402 if (!gv2 || !io2)
2403 report_evil_fh(gv1, io2, PL_op->op_type);
2404 }
5ee74a84 2405 if (io1 && IoIFP(io1))
c289d2f7 2406 do_close(gv1, FALSE);
5ee74a84 2407 if (io2 && IoIFP(io2))
c289d2f7 2408 do_close(gv2, FALSE);
a0d0e21e 2409 RETPUSHUNDEF;
c289d2f7 2410 }
a0d0e21e 2411
dc0d0a5f
JH		 2412 if (IoIFP(io1))
2413 do_close(gv1, FALSE);
2414 if (IoIFP(io2))
2415 do_close(gv2, FALSE);
57171420 2416
a0d0e21e 2417 TAINT_PROPER("socketpair");
6ad3d225 2418 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2419 RETPUSHUNDEF;
460c8493
IZ		 2420 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2421 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2422 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ		 2423 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2424 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2425 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2426 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2427 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2428 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2429 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2430 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2431 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2432 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2433 RETPUSHUNDEF;
2434 }
8d2a6795
GS		 2435#if defined(HAS_FCNTL) && defined(F_SETFD)
2436 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2437 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2438#endif
a0d0e21e
LW		 2439
2440 RETPUSHYES;
2441#else
cea2e8a9 2442 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2443#endif
2444}
2445
2446PP(pp_bind)
2447{
a0d0e21e 2448#ifdef HAS_SOCKET
97aff369 2449 dVAR; dSP;
7452cf6a 2450 SV * const addrsv = POPs;
349d4f2f
NC		 2451 /* OK, so on what platform does bind modify addr? */
2452 const char *addr;
7452cf6a
AL		 2453 GV * const gv = (GV*)POPs;
2454 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 2455 STRLEN len;
2456
2457 if (!io || !IoIFP(io))
2458 goto nuts;
2459
349d4f2f 2460 addr = SvPV_const(addrsv, len);
a0d0e21e 2461 TAINT_PROPER("bind");
a79db61d 2462 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2463 RETPUSHYES;
2464 else
2465 RETPUSHUNDEF;
2466
2467nuts:
599cee73 2468 if (ckWARN(WARN_CLOSED))
bc37a18f 2469 report_evil_fh(gv, io, PL_op->op_type);
93189314 2470 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2471 RETPUSHUNDEF;
2472#else
cea2e8a9 2473 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2474#endif
2475}
2476
2477PP(pp_connect)
2478{
a0d0e21e 2479#ifdef HAS_SOCKET
97aff369 2480 dVAR; dSP;
7452cf6a
AL		 2481 SV * const addrsv = POPs;
2482 GV * const gv = (GV*)POPs;
2483 register IO * const io = GvIOn(gv);
349d4f2f 2484 const char *addr;
a0d0e21e
LW		 2485 STRLEN len;
2486
2487 if (!io || !IoIFP(io))
2488 goto nuts;
2489
349d4f2f 2490 addr = SvPV_const(addrsv, len);
a0d0e21e 2491 TAINT_PROPER("connect");
6ad3d225 2492 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2493 RETPUSHYES;
2494 else
2495 RETPUSHUNDEF;
2496
2497nuts:
599cee73 2498 if (ckWARN(WARN_CLOSED))
bc37a18f 2499 report_evil_fh(gv, io, PL_op->op_type);
93189314 2500 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2501 RETPUSHUNDEF;
2502#else
cea2e8a9 2503 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2504#endif
2505}
2506
2507PP(pp_listen)
2508{
a0d0e21e 2509#ifdef HAS_SOCKET
97aff369 2510 dVAR; dSP;
7452cf6a
AL		 2511 const int backlog = POPi;
2512 GV * const gv = (GV*)POPs;
2513 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2514
c289d2f7 2515 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2516 goto nuts;
2517
6ad3d225 2518 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2519 RETPUSHYES;
2520 else
2521 RETPUSHUNDEF;
2522
2523nuts:
599cee73 2524 if (ckWARN(WARN_CLOSED))
bc37a18f 2525 report_evil_fh(gv, io, PL_op->op_type);
93189314 2526 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2527 RETPUSHUNDEF;
2528#else
cea2e8a9 2529 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2530#endif
2531}
2532
2533PP(pp_accept)
2534{
a0d0e21e 2535#ifdef HAS_SOCKET
97aff369 2536 dVAR; dSP; dTARGET;
a0d0e21e
LW		 2537 register IO *nstio;
2538 register IO *gstio;
93d47a36
JH		 2539 char namebuf[MAXPATHLEN];
2540#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2541 Sock_size_t len = sizeof (struct sockaddr_in);
2542#else
2543 Sock_size_t len = sizeof namebuf;
2544#endif
7452cf6a
AL		 2545 GV * const ggv = (GV*)POPs;
2546 GV * const ngv = (GV*)POPs;
a0d0e21e
LW		 2547 int fd;
2548
a0d0e21e
LW		 2549 if (!ngv)
2550 goto badexit;
2551 if (!ggv)
2552 goto nuts;
2553
2554 gstio = GvIO(ggv);
2555 if (!gstio || !IoIFP(gstio))
2556 goto nuts;
2557
2558 nstio = GvIOn(ngv);
93d47a36 2559 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
a0d0e21e
LW		 2560 if (fd < 0)
2561 goto badexit;
a70048fb
AB		 2562 if (IoIFP(nstio))
2563 do_close(ngv, FALSE);
460c8493
IZ		 2564 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2565 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2566 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2567 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2568 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2569 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2570 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2571 goto badexit;
2572 }
8d2a6795
GS		 2573#if defined(HAS_FCNTL) && defined(F_SETFD)
2574 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2575#endif
a0d0e21e 2576
ed79a026 2577#ifdef EPOC
93d47a36 2578 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
a9f1f6b0 2579 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026 2580#endif
381c1bae 2581#ifdef __SCO_VERSION__
93d47a36 2582 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2583#endif
ed79a026 2584
93d47a36 2585 PUSHp(namebuf, len);
a0d0e21e
LW		 2586 RETURN;
2587
2588nuts:
599cee73 2589 if (ckWARN(WARN_CLOSED))
bc37a18f 2590 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
93189314 2591 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2592
2593badexit:
2594 RETPUSHUNDEF;
2595
2596#else
cea2e8a9 2597 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2598#endif
2599}
2600
2601PP(pp_shutdown)
2602{
a0d0e21e 2603#ifdef HAS_SOCKET
97aff369 2604 dVAR; dSP; dTARGET;
7452cf6a
AL		 2605 const int how = POPi;
2606 GV * const gv = (GV*)POPs;
2607 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 2608
2609 if (!io || !IoIFP(io))
2610 goto nuts;
2611
6ad3d225 2612 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2613 RETURN;
2614
2615nuts:
599cee73 2616 if (ckWARN(WARN_CLOSED))
bc37a18f 2617 report_evil_fh(gv, io, PL_op->op_type);
93189314 2618 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2619 RETPUSHUNDEF;
2620#else
cea2e8a9 2621 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2622#endif
2623}
2624
a0d0e21e
LW		 2625PP(pp_ssockopt)
2626{
a0d0e21e 2627#ifdef HAS_SOCKET
97aff369 2628 dVAR; dSP;
7452cf6a 2629 const int optype = PL_op->op_type;
561b68a9 2630 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2631 const unsigned int optname = (unsigned int) POPi;
2632 const unsigned int lvl = (unsigned int) POPi;
2633 GV * const gv = (GV*)POPs;
2634 register IO * const io = GvIOn(gv);
a0d0e21e 2635 int fd;
1e422769 2636 Sock_size_t len;
a0d0e21e 2637
a0d0e21e
LW		 2638 if (!io || !IoIFP(io))
2639 goto nuts;
2640
760ac839 2641 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2642 switch (optype) {
2643 case OP_GSOCKOPT:
748a9306 2644 SvGROW(sv, 257);
a0d0e21e 2645 (void)SvPOK_only(sv);
748a9306
LW		 2646 SvCUR_set(sv,256);
2647 *SvEND(sv) ='\0';
1e422769 2648 len = SvCUR(sv);
6ad3d225 2649 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2650 goto nuts2;
1e422769 2651 SvCUR_set(sv, len);
748a9306 2652 *SvEND(sv) ='\0';
a0d0e21e
LW		 2653 PUSHs(sv);
2654 break;
2655 case OP_SSOCKOPT: {
1215b447
JH		 2656#if defined(__SYMBIAN32__)
2657# define SETSOCKOPT_OPTION_VALUE_T void *
2658#else
2659# define SETSOCKOPT_OPTION_VALUE_T const char *
2660#endif
2661 /* XXX TODO: We need to have a proper type (a Configure probe,
2662 * etc.) for what the C headers think of the third argument of
2663 * setsockopt(), the option_value read-only buffer: is it
2664 * a "char *", or a "void *", const or not. Some compilers
2665 * don't take kindly to e.g. assuming that "char *" implicitly
2666 * promotes to a "void *", or to explicitly promoting/demoting
2667 * consts to non/vice versa. The "const void *" is the SUS
2668 * definition, but that does not fly everywhere for the above
2669 * reasons. */
2670 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769 2671 int aint;
2672 if (SvPOKp(sv)) {
2d8e6c8d 2673 STRLEN l;
1215b447 2674 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2675 len = l;
1e422769 2676 }
56ee1660 2677 else {
a0d0e21e 2678 aint = (int)SvIV(sv);
1215b447 2679 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2680 len = sizeof(int);
2681 }
6ad3d225 2682 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2683 goto nuts2;
3280af22 2684 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2685 }
2686 break;
2687 }
2688 RETURN;
2689
2690nuts:
599cee73 2691 if (ckWARN(WARN_CLOSED))
bc37a18f 2692 report_evil_fh(gv, io, optype);
93189314 2693 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2694nuts2:
2695 RETPUSHUNDEF;
2696
2697#else
af51a00e 2698 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2699#endif
2700}
2701
a0d0e21e
LW		 2702PP(pp_getpeername)
2703{
a0d0e21e 2704#ifdef HAS_SOCKET
97aff369 2705 dVAR; dSP;
7452cf6a
AL		 2706 const int optype = PL_op->op_type;
2707 GV * const gv = (GV*)POPs;
2708 register IO * const io = GvIOn(gv);
2709 Sock_size_t len;
a0d0e21e
LW		 2710 SV *sv;
2711 int fd;
a0d0e21e
LW		 2712
2713 if (!io || !IoIFP(io))
2714 goto nuts;
2715
561b68a9 2716 sv = sv_2mortal(newSV(257));
748a9306 2717 (void)SvPOK_only(sv);
1e422769 2718 len = 256;
2719 SvCUR_set(sv, len);
748a9306 2720 *SvEND(sv) ='\0';
760ac839 2721 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2722 switch (optype) {
2723 case OP_GETSOCKNAME:
6ad3d225 2724 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2725 goto nuts2;
2726 break;
2727 case OP_GETPEERNAME:
6ad3d225 2728 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2729 goto nuts2;
490ab354
JH		 2730#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2731 {
2732 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";
2733 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2734 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2735 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2736 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2737 goto nuts2;
490ab354
JH		 2738 }
2739 }
2740#endif
a0d0e21e
LW		 2741 break;
2742 }
13826f2c
CS		 2743#ifdef BOGUS_GETNAME_RETURN
2744 /* Interactive Unix, getpeername() and getsockname()
2745 does not return valid namelen */
1e422769 2746 if (len == BOGUS_GETNAME_RETURN)
2747 len = sizeof(struct sockaddr);
13826f2c 2748#endif
1e422769 2749 SvCUR_set(sv, len);
748a9306 2750 *SvEND(sv) ='\0';
a0d0e21e
LW		 2751 PUSHs(sv);
2752 RETURN;
2753
2754nuts:
599cee73 2755 if (ckWARN(WARN_CLOSED))
bc37a18f 2756 report_evil_fh(gv, io, optype);
93189314 2757 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2758nuts2:
2759 RETPUSHUNDEF;
2760
2761#else
af51a00e 2762 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2763#endif
2764}
2765
2766/* Stat calls. */
2767
a0d0e21e
LW		 2768PP(pp_stat)
2769{
97aff369 2770 dVAR;
39644a26 2771 dSP;
2dd78f96 2772 GV *gv;
54310121 2773 I32 gimme;
a0d0e21e
LW		 2774 I32 max = 13;
2775
533c011a 2776 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2777 gv = cGVOP_gv;
8a4e5b40 2778 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2779 if (gv != PL_defgv) {
5d329e6e 2780 do_fstat_warning_check:
5d3e98de 2781 if (ckWARN(WARN_IO))
9014280d 2782 Perl_warner(aTHX_ packWARN(WARN_IO),
5d3e98de
RGS		 2783 "lstat() on filehandle %s", GvENAME(gv));
2784 } else if (PL_laststype != OP_LSTAT)
8a4e5b40 2785 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2786 }
2787
748a9306 2788 do_fstat:
2dd78f96 2789 if (gv != PL_defgv) {
3280af22 2790 PL_laststype = OP_STAT;
2dd78f96 2791 PL_statgv = gv;
c69006e4 2792 sv_setpvn(PL_statname, "", 0);
2dd78f96
JH		 2793 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2794 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
a0d0e21e 2795 }
9ddeeac9 2796 if (PL_laststatval < 0) {
2dd78f96
JH		 2797 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2798 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2799 max = 0;
9ddeeac9 2800 }
a0d0e21e
LW		 2801 }
2802 else {
7452cf6a 2803 SV* const sv = POPs;
748a9306 2804 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2805 gv = (GV*)sv;
748a9306
LW		 2806 goto do_fstat;
2807 }
2808 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 2809 gv = (GV*)SvRV(sv);
5d329e6e
NC		 2810 if (PL_op->op_type == OP_LSTAT)
2811 goto do_fstat_warning_check;
748a9306
LW		 2812 goto do_fstat;
2813 }
0510663f 2814 sv_setpv(PL_statname, SvPV_nolen_const(sv));
a0714e2c 2815 PL_statgv = NULL;
533c011a
NIS		 2816 PL_laststype = PL_op->op_type;
2817 if (PL_op->op_type == OP_LSTAT)
0510663f 2818 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2819 else
0510663f 2820 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2821 if (PL_laststatval < 0) {
0510663f 2822 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
9014280d 2823 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW		 2824 max = 0;
2825 }
2826 }
2827
54310121 2828 gimme = GIMME_V;
2829 if (gimme != G_ARRAY) {
2830 if (gimme != G_VOID)
2831 XPUSHs(boolSV(max));
2832 RETURN;
a0d0e21e
LW		 2833 }
2834 if (max) {
36477c24 2835 EXTEND(SP, max);
2836 EXTEND_MORTAL(max);
1ff81528
PL		 2837 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2838 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2839 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2840 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2841#if Uid_t_size > IVSIZE
2842 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2843#else
23dcd6c8 2844# if Uid_t_sign <= 0
1ff81528 2845 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2846# else
2847 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2848# endif
146174a9 2849#endif
301e8125 2850#if Gid_t_size > IVSIZE
146174a9
CB		 2851 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2852#else
23dcd6c8 2853# if Gid_t_sign <= 0
1ff81528 2854 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2855# else
2856 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2857# endif
146174a9 2858#endif
cbdc8872 2859#ifdef USE_STAT_RDEV
1ff81528 2860 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2861#else
396482e1 2862 PUSHs(sv_2mortal(newSVpvs("")));
cbdc8872 2863#endif
146174a9 2864#if Off_t_size > IVSIZE
4a9d6100 2865 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
146174a9 2866#else
1ff81528 2867 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2868#endif
cbdc8872 2869#ifdef BIG_TIME
172ae379
JH		 2870 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2871 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2872 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2873#else
1ff81528
PL		 2874 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2875 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2876 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
cbdc8872 2877#endif
a0d0e21e 2878#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2879 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2880 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2881#else
396482e1
GA		 2882 PUSHs(sv_2mortal(newSVpvs("")));
2883 PUSHs(sv_2mortal(newSVpvs("")));
a0d0e21e
LW		 2884#endif
2885 }
2886 RETURN;
2887}
2888
fbb0b3b3
RGS		 2889/* This macro is used by the stacked filetest operators :
2890 * if the previous filetest failed, short-circuit and pass its value.
2891 * Else, discard it from the stack and continue. --rgs
2892 */
2893#define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2894 if (TOPs == &PL_sv_no || TOPs == &PL_sv_undef) { RETURN; } \
2895 else { (void)POPs; PUTBACK; } \
2896 }
2897
a0d0e21e
LW		 2898PP(pp_ftrread)
2899{
97aff369 2900 dVAR;
9cad6237 2901 I32 result;
af9e49b4
NC		 2902 /* Not const, because things tweak this below. Not bool, because there's
2903 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2904#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2905 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2906 /* Giving some sort of initial value silences compilers. */
2907# ifdef R_OK
2908 int access_mode = R_OK;
2909# else
2910 int access_mode = 0;
2911# endif
5ff3f7a4 2912#else
af9e49b4
NC		 2913 /* access_mode is never used, but leaving use_access in makes the
2914 conditional compiling below much clearer. */
2915 I32 use_access = 0;
5ff3f7a4 2916#endif
af9e49b4 2917 int stat_mode = S_IRUSR;
a0d0e21e 2918
af9e49b4 2919 bool effective = FALSE;
2a3ff820 2920 dSP;
af9e49b4 2921
fbb0b3b3 2922 STACKED_FTEST_CHECK;
af9e49b4
NC		 2923
2924 switch (PL_op->op_type) {
2925 case OP_FTRREAD:
2926#if !(defined(HAS_ACCESS) && defined(R_OK))
2927 use_access = 0;
2928#endif
2929 break;
2930
2931 case OP_FTRWRITE:
5ff3f7a4 2932#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 2933 access_mode = W_OK;
5ff3f7a4 2934#else
af9e49b4 2935 use_access = 0;
5ff3f7a4 2936#endif
af9e49b4
NC		 2937 stat_mode = S_IWUSR;
2938 break;
a0d0e21e 2939
af9e49b4 2940 case OP_FTREXEC:
5ff3f7a4 2941#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 2942 access_mode = X_OK;
5ff3f7a4 2943#else
af9e49b4 2944 use_access = 0;
5ff3f7a4 2945#endif
af9e49b4
NC		 2946 stat_mode = S_IXUSR;
2947 break;
a0d0e21e 2948
af9e49b4 2949 case OP_FTEWRITE:
faee0e31 2950#ifdef PERL_EFF_ACCESS
af9e49b4 2951 access_mode = W_OK;
5ff3f7a4 2952#endif
af9e49b4
NC		 2953 stat_mode = S_IWUSR;
2954 /* Fall through */
a0d0e21e 2955
af9e49b4
NC		 2956 case OP_FTEREAD:
2957#ifndef PERL_EFF_ACCESS
2958 use_access = 0;
2959#endif
2960 effective = TRUE;
2961 break;
2962
2963
2964 case OP_FTEEXEC:
faee0e31 2965#ifdef PERL_EFF_ACCESS
af9e49b4 2966 access_mode = W_OK;
5ff3f7a4 2967#else
af9e49b4 2968 use_access = 0;
5ff3f7a4 2969#endif
af9e49b4
NC		 2970 stat_mode = S_IXUSR;
2971 effective = TRUE;
2972 break;
2973 }
a0d0e21e 2974
af9e49b4
NC		 2975 if (use_access) {
2976#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2977 const char *const name = POPpx;
2978 if (effective) {
2979# ifdef PERL_EFF_ACCESS
2980 result = PERL_EFF_ACCESS(name, access_mode);
2981# else
2982 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
2983 OP_NAME(PL_op));
2984# endif
2985 }
2986 else {
2987# ifdef HAS_ACCESS
2988 result = access(name, access_mode);
2989# else
2990 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
2991# endif
2992 }
5ff3f7a4
GS		 2993 if (result == 0)
2994 RETPUSHYES;
2995 if (result < 0)
2996 RETPUSHUNDEF;
2997 RETPUSHNO;
af9e49b4 2998#endif
22865c03 2999 }
af9e49b4 3000
cea2e8a9 3001 result = my_stat();
22865c03 3002 SPAGAIN;
a0d0e21e
LW		 3003 if (result < 0)
3004 RETPUSHUNDEF;
af9e49b4 3005 if (cando(stat_mode, effective, &PL_statcache))
a0d0e21e
LW		 3006 RETPUSHYES;
3007 RETPUSHNO;
3008}
3009
3010PP(pp_ftis)
3011{
97aff369 3012 dVAR;
fbb0b3b3 3013 I32 result;
d7f0a2f4 3014 const int op_type = PL_op->op_type;
2a3ff820 3015 dSP;
fbb0b3b3
RGS		 3016 STACKED_FTEST_CHECK;
3017 result = my_stat();
3018 SPAGAIN;
a0d0e21e
LW		 3019 if (result < 0)
3020 RETPUSHUNDEF;
d7f0a2f4
NC		 3021 if (op_type == OP_FTIS)
3022 RETPUSHYES;
957b0e1d 3023 {
d7f0a2f4
NC		 3024 /* You can't dTARGET inside OP_FTIS, because you'll get
3025 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3026 dTARGET;
d7f0a2f4 3027 switch (op_type) {
957b0e1d
NC		 3028 case OP_FTSIZE:
3029#if Off_t_size > IVSIZE
3030 PUSHn(PL_statcache.st_size);
3031#else
3032 PUSHi(PL_statcache.st_size);
3033#endif
3034 break;
3035 case OP_FTMTIME:
3036 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
3037 break;
3038 case OP_FTATIME:
3039 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
3040 break;
3041 case OP_FTCTIME:
3042 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
3043 break;
3044 }
3045 }
3046 RETURN;
a0d0e21e
LW		 3047}
3048
a0d0e21e
LW		 3049PP(pp_ftrowned)
3050{
97aff369 3051 dVAR;
fbb0b3b3 3052 I32 result;
2a3ff820 3053 dSP;
17ad201a
NC		 3054
3055 /* I believe that all these three are likely to be defined on most every
3056 system these days. */
3057#ifndef S_ISUID
3058 if(PL_op->op_type == OP_FTSUID)
3059 RETPUSHNO;
3060#endif
3061#ifndef S_ISGID
3062 if(PL_op->op_type == OP_FTSGID)
3063 RETPUSHNO;
3064#endif
3065#ifndef S_ISVTX
3066 if(PL_op->op_type == OP_FTSVTX)
3067 RETPUSHNO;
3068#endif
3069
fbb0b3b3
RGS		 3070 STACKED_FTEST_CHECK;
3071 result = my_stat();
3072 SPAGAIN;
a0d0e21e
LW		 3073 if (result < 0)
3074 RETPUSHUNDEF;
f1cb2d48
NC		 3075 switch (PL_op->op_type) {
3076 case OP_FTROWNED:
9ab9fa88 3077 if (PL_statcache.st_uid == PL_uid)
f1cb2d48
NC		 3078 RETPUSHYES;
3079 break;
3080 case OP_FTEOWNED:
3081 if (PL_statcache.st_uid == PL_euid)
3082 RETPUSHYES;
3083 break;
3084 case OP_FTZERO:
3085 if (PL_statcache.st_size == 0)
3086 RETPUSHYES;
3087 break;
3088 case OP_FTSOCK:
3089 if (S_ISSOCK(PL_statcache.st_mode))
3090 RETPUSHYES;
3091 break;
3092 case OP_FTCHR:
3093 if (S_ISCHR(PL_statcache.st_mode))
3094 RETPUSHYES;
3095 break;
3096 case OP_FTBLK:
3097 if (S_ISBLK(PL_statcache.st_mode))
3098 RETPUSHYES;
3099 break;
3100 case OP_FTFILE:
3101 if (S_ISREG(PL_statcache.st_mode))
3102 RETPUSHYES;
3103 break;
3104 case OP_FTDIR:
3105 if (S_ISDIR(PL_statcache.st_mode))
3106 RETPUSHYES;
3107 break;
3108 case OP_FTPIPE:
3109 if (S_ISFIFO(PL_statcache.st_mode))
3110 RETPUSHYES;
3111 break;
a0d0e21e 3112#ifdef S_ISUID
17ad201a
NC		 3113 case OP_FTSUID:
3114 if (PL_statcache.st_mode & S_ISUID)
3115 RETPUSHYES;
3116 break;
a0d0e21e 3117#endif
a0d0e21e 3118#ifdef S_ISGID
17ad201a
NC		 3119 case OP_FTSGID:
3120 if (PL_statcache.st_mode & S_ISGID)
3121 RETPUSHYES;
3122 break;
3123#endif
3124#ifdef S_ISVTX
3125 case OP_FTSVTX:
3126 if (PL_statcache.st_mode & S_ISVTX)
3127 RETPUSHYES;
3128 break;
a0d0e21e 3129#endif
17ad201a 3130 }
a0d0e21e
LW		 3131 RETPUSHNO;
3132}
3133
17ad201a 3134PP(pp_ftlink)
a0d0e21e 3135{
97aff369 3136 dVAR;
17ad201a 3137 I32 result = my_lstat();
39644a26 3138 dSP;
a0d0e21e
LW		 3139 if (result < 0)
3140 RETPUSHUNDEF;
17ad201a 3141 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e 3142 RETPUSHYES;
a0d0e21e
LW		 3143 RETPUSHNO;
3144}
3145
3146PP(pp_fttty)
3147{
97aff369 3148 dVAR;
39644a26 3149 dSP;
a0d0e21e
LW		 3150 int fd;
3151 GV *gv;
a0714e2c 3152 SV *tmpsv = NULL;
fb73857a 3153
fbb0b3b3
RGS		 3154 STACKED_FTEST_CHECK;
3155
533c011a 3156 if (PL_op->op_flags & OPf_REF)
146174a9 3157 gv = cGVOP_gv;
fb73857a 3158 else if (isGV(TOPs))
3159 gv = (GV*)POPs;
3160 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3161 gv = (GV*)SvRV(POPs);
a0d0e21e 3162 else
f776e3cd 3163 gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
fb73857a 3164
a0d0e21e 3165 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3166 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
7a5fd60d 3167 else if (tmpsv && SvOK(tmpsv)) {
349d4f2f 3168 const char *tmps = SvPV_nolen_const(tmpsv);
7a5fd60d
NC		 3169 if (isDIGIT(*tmps))
3170 fd = atoi(tmps);
3171 else
3172 RETPUSHUNDEF;
3173 }
a0d0e21e
LW		 3174 else
3175 RETPUSHUNDEF;
6ad3d225 3176 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3177 RETPUSHYES;
3178 RETPUSHNO;
3179}
3180
16d20bd9
AD		 3181#if defined(atarist) /* this will work with atariST. Configure will
3182 make guesses for other systems. */
3183# define FILE_base(f) ((f)->_base)
3184# define FILE_ptr(f) ((f)->_ptr)
3185# define FILE_cnt(f) ((f)->_cnt)
3186# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3187#endif
3188
3189PP(pp_fttext)
3190{
97aff369 3191 dVAR;
39644a26 3192 dSP;
a0d0e21e
LW		 3193 I32 i;
3194 I32 len;
3195 I32 odd = 0;
3196 STDCHAR tbuf[512];
3197 register STDCHAR *s;
3198 register IO *io;
5f05dabc 3199 register SV *sv;
3200 GV *gv;
146174a9 3201 PerlIO *fp;
a0d0e21e 3202
fbb0b3b3
RGS		 3203 STACKED_FTEST_CHECK;
3204
533c011a 3205 if (PL_op->op_flags & OPf_REF)
146174a9 3206 gv = cGVOP_gv;
5f05dabc 3207 else if (isGV(TOPs))
3208 gv = (GV*)POPs;
3209 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3210 gv = (GV*)SvRV(POPs);
3211 else
a0714e2c 3212 gv = NULL;
5f05dabc 3213
3214 if (gv) {
a0d0e21e 3215 EXTEND(SP, 1);
3280af22
NIS		 3216 if (gv == PL_defgv) {
3217 if (PL_statgv)
3218 io = GvIO(PL_statgv);
a0d0e21e 3219 else {
3280af22 3220 sv = PL_statname;
a0d0e21e
LW		 3221 goto really_filename;
3222 }
3223 }
3224 else {
3280af22
NIS		 3225 PL_statgv = gv;
3226 PL_laststatval = -1;
c69006e4 3227 sv_setpvn(PL_statname, "", 0);
3280af22 3228 io = GvIO(PL_statgv);
a0d0e21e
LW		 3229 }
3230 if (io && IoIFP(io)) {
5f05dabc 3231 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3232 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3233 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3234 if (PL_laststatval < 0)
5f05dabc 3235 RETPUSHUNDEF;
9cbac4c7 3236 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3237 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3238 RETPUSHNO;
3239 else
3240 RETPUSHYES;
9cbac4c7 3241 }
a20bf0c3 3242 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3243 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3244 if (i != EOF)
760ac839 3245 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3246 }
a20bf0c3 3247 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3248 RETPUSHYES;
a20bf0c3
JH		 3249 len = PerlIO_get_bufsiz(IoIFP(io));
3250 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3251 /* sfio can have large buffers - limit to 512 */
3252 if (len > 512)
3253 len = 512;
a0d0e21e
LW		 3254 }
3255 else {
2dd78f96 3256 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3257 gv = cGVOP_gv;
2dd78f96 3258 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3259 }
93189314 3260 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 3261 RETPUSHUNDEF;
3262 }
3263 }
3264 else {
3265 sv = POPs;
5f05dabc 3266 really_filename:
a0714e2c 3267 PL_statgv = NULL;
5c9aa243 3268 PL_laststype = OP_STAT;
d5263905 3269 sv_setpv(PL_statname, SvPV_nolen_const(sv));
aa07b2f6 3270 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
349d4f2f
NC		 3271 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3272 '\n'))
9014280d 3273 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
a0d0e21e
LW		 3274 RETPUSHUNDEF;
3275 }
146174a9
CB		 3276 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3277 if (PL_laststatval < 0) {
3278 (void)PerlIO_close(fp);
5f05dabc 3279 RETPUSHUNDEF;
146174a9 3280 }
bd61b366 3281 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
146174a9
CB		 3282 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3283 (void)PerlIO_close(fp);
a0d0e21e 3284 if (len <= 0) {
533c011a 3285 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3286 RETPUSHNO; /* special case NFS directories */
3287 RETPUSHYES; /* null file is anything */
3288 }
3289 s = tbuf;
3290 }
3291
3292 /* now scan s to look for textiness */
4633a7c4 3293 /* XXX ASCII dependent code */
a0d0e21e 3294
146174a9
CB		 3295#if defined(DOSISH) || defined(USEMYBINMODE)
3296 /* ignore trailing ^Z on short files */
3297 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3298 --len;
3299#endif
3300
a0d0e21e
LW		 3301 for (i = 0; i < len; i++, s++) {
3302 if (!*s) { /* null never allowed in text */
3303 odd += len;
3304 break;
3305 }
9d116dd7 3306#ifdef EBCDIC
301e8125 3307 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3308 odd++;
3309#else
146174a9
CB		 3310 else if (*s & 128) {
3311#ifdef USE_LOCALE
2de3dbcc 3312 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3313 continue;
3314#endif
3315 /* utf8 characters don't count as odd */
fd400ab9 3316 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3317 int ulen = UTF8SKIP(s);
3318 if (ulen < len - i) {
3319 int j;
3320 for (j = 1; j < ulen; j++) {
fd400ab9 3321 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3322 goto not_utf8;
3323 }
3324 --ulen; /* loop does extra increment */
3325 s += ulen;
3326 i += ulen;
3327 continue;
3328 }
3329 }
3330 not_utf8:
3331 odd++;
146174a9 3332 }
a0d0e21e
LW		 3333 else if (*s < 32 &&
3334 *s != '\n' && *s != '\r' && *s != '\b' &&
3335 *s != '\t' && *s != '\f' && *s != 27)
3336 odd++;
9d116dd7 3337#endif
a0d0e21e
LW		 3338 }
3339
533c011a 3340 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3341 RETPUSHNO;
3342 else
3343 RETPUSHYES;
3344}
3345
a0d0e21e
LW		 3346/* File calls. */
3347
3348PP(pp_chdir)
3349{
97aff369 3350 dVAR; dSP; dTARGET;
c445ea15 3351 const char *tmps = NULL;
9a957fbc 3352 GV *gv = NULL;
a0d0e21e 3353
c4aca7d0 3354 if( MAXARG == 1 ) {
9a957fbc 3355 SV * const sv = POPs;
d4ac975e
GA		 3356 if (PL_op->op_flags & OPf_SPECIAL) {
3357 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3358 }
3359 else if (SvTYPE(sv) == SVt_PVGV) {
c4aca7d0
GA		 3360 gv = (GV*)sv;
3361 }
3362 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
3363 gv = (GV*)SvRV(sv);
3364 }
3365 else {
3366 tmps = SvPVx_nolen_const(sv);
3367 }
3368 }
35ae6b54 3369
c4aca7d0 3370 if( !gv && (!tmps || !*tmps) ) {
9a957fbc
AL		 3371 HV * const table = GvHVn(PL_envgv);
3372 SV **svp;
3373
a4fc7abc
AL		 3374 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3375 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
491527d0 3376#ifdef VMS
a4fc7abc 3377 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
491527d0 3378#endif
35ae6b54
MS		 3379 )
3380 {
3381 if( MAXARG == 1 )
9014280d 3382 deprecate("chdir('') or chdir(undef) as chdir()");
8c074e2a 3383 tmps = SvPV_nolen_const(*svp);
35ae6b54 3384 }
72f496dc 3385 else {
389ec635 3386 PUSHi(0);
b7ab37f8 3387 TAINT_PROPER("chdir");
389ec635
MS		 3388 RETURN;
3389 }
8ea155d1 3390 }
8ea155d1 3391
a0d0e21e 3392 TAINT_PROPER("chdir");
c4aca7d0
GA		 3393 if (gv) {
3394#ifdef HAS_FCHDIR
9a957fbc 3395 IO* const io = GvIO(gv);
c4aca7d0
GA		 3396 if (io) {
3397 if (IoIFP(io)) {
3398 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3399 }
3400 else if (IoDIRP(io)) {
3401#ifdef HAS_DIRFD
3402 PUSHi(fchdir(dirfd(IoDIRP(io))) >= 0);
3403#else
0f1f2428 3404 DIE(aTHX_ PL_no_func, "dirfd");
c4aca7d0
GA		 3405#endif
3406 }
3407 else {
4dc171f0
PD		 3408 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3409 report_evil_fh(gv, io, PL_op->op_type);
3410 SETERRNO(EBADF, RMS_IFI);
c4aca7d0
GA		 3411 PUSHi(0);
3412 }
3413 }
3414 else {
4dc171f0
PD		 3415 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3416 report_evil_fh(gv, io, PL_op->op_type);
3417 SETERRNO(EBADF,RMS_IFI);
c4aca7d0
GA		 3418 PUSHi(0);
3419 }
3420#else
3421 DIE(aTHX_ PL_no_func, "fchdir");
3422#endif
3423 }
3424 else
b8ffc8df 3425 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3426#ifdef VMS
3427 /* Clear the DEFAULT element of ENV so we'll get the new value
3428 * in the future. */
6b88bc9c 3429 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3430#endif
a0d0e21e
LW		 3431 RETURN;
3432}
3433
3434PP(pp_chown)
3435{
97aff369 3436 dVAR; dSP; dMARK; dTARGET;
605b9385 3437 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
76ffd3b9 3438
a0d0e21e 3439 SP = MARK;
b59aed67 3440 XPUSHi(value);
a0d0e21e 3441 RETURN;
a0d0e21e
LW		 3442}
3443
3444PP(pp_chroot)
3445{
a0d0e21e 3446#ifdef HAS_CHROOT
97aff369 3447 dVAR; dSP; dTARGET;
7452cf6a 3448 char * const tmps = POPpx;
a0d0e21e
LW		 3449 TAINT_PROPER("chroot");
3450 PUSHi( chroot(tmps) >= 0 );
3451 RETURN;
3452#else
cea2e8a9 3453 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3454#endif
3455}
3456
a0d0e21e
LW		 3457PP(pp_rename)
3458{
97aff369 3459 dVAR; dSP; dTARGET;
a0d0e21e 3460 int anum;
7452cf6a
AL		 3461 const char * const tmps2 = POPpconstx;
3462 const char * const tmps = SvPV_nolen_const(TOPs);
a0d0e21e
LW		 3463 TAINT_PROPER("rename");
3464#ifdef HAS_RENAME
baed7233 3465 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3466#else
6b88bc9c 3467 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
ed969818
W		 3468 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3469 anum = 1;
3470 else {
3654eb6c 3471 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
ed969818
W		 3472 (void)UNLINK(tmps2);
3473 if (!(anum = link(tmps, tmps2)))
3474 anum = UNLINK(tmps);
3475 }
a0d0e21e
LW		 3476 }
3477#endif
3478 SETi( anum >= 0 );
3479 RETURN;
3480}
3481
ce6987d0 3482#if defined(HAS_LINK) || defined(HAS_SYMLINK)
a0d0e21e
LW		 3483PP(pp_link)
3484{
97aff369 3485 dVAR; dSP; dTARGET;
ce6987d0
NC		 3486 const int op_type = PL_op->op_type;
3487 int result;
a0d0e21e 3488
ce6987d0
NC		 3489# ifndef HAS_LINK
3490 if (op_type == OP_LINK)
3491 DIE(aTHX_ PL_no_func, "link");
3492# endif
3493# ifndef HAS_SYMLINK
3494 if (op_type == OP_SYMLINK)
3495 DIE(aTHX_ PL_no_func, "symlink");
3496# endif
3497
3498 {
7452cf6a
AL		 3499 const char * const tmps2 = POPpconstx;
3500 const char * const tmps = SvPV_nolen_const(TOPs);
ce6987d0
NC		 3501 TAINT_PROPER(PL_op_desc[op_type]);
3502 result =
3503# if defined(HAS_LINK)
3504# if defined(HAS_SYMLINK)
3505 /* Both present - need to choose which. */
3506 (op_type == OP_LINK) ?
3507 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3508# else
4a8ebb7f
SH		 3509 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3510 PerlLIO_link(tmps, tmps2);
ce6987d0
NC		 3511# endif
3512# else
3513# if defined(HAS_SYMLINK)
4a8ebb7f
SH		 3514 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3515 symlink(tmps, tmps2);
ce6987d0
NC		 3516# endif
3517# endif
3518 }
3519
3520 SETi( result >= 0 );
a0d0e21e 3521 RETURN;
ce6987d0 3522}
a0d0e21e 3523#else
ce6987d0
NC		 3524PP(pp_link)
3525{
3526 /* Have neither. */
3527 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 3528}
ce6987d0 3529#endif
a0d0e21e
LW		 3530
3531PP(pp_readlink)
3532{
97aff369 3533 dVAR;
76ffd3b9 3534 dSP;
a0d0e21e 3535#ifdef HAS_SYMLINK
76ffd3b9 3536 dTARGET;
10516c54 3537 const char *tmps;
46fc3d4c 3538 char buf[MAXPATHLEN];
a0d0e21e 3539 int len;
46fc3d4c 3540
fb73857a 3541#ifndef INCOMPLETE_TAINTS
3542 TAINT;
3543#endif
10516c54 3544 tmps = POPpconstx;
97dcea33 3545 len = readlink(tmps, buf, sizeof(buf) - 1);
a0d0e21e
LW		 3546 EXTEND(SP, 1);
3547 if (len < 0)
3548 RETPUSHUNDEF;
3549 PUSHp(buf, len);
3550 RETURN;
3551#else
3552 EXTEND(SP, 1);
3553 RETSETUNDEF; /* just pretend it's a normal file */
3554#endif
3555}
3556
3557#if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
ba106d47 3558STATIC int
b464bac0 3559S_dooneliner(pTHX_ const char *cmd, const char *filename)
a0d0e21e 3560{
b464bac0 3561 char * const save_filename = filename;
1e422769 3562 char *cmdline;
3563 char *s;
760ac839 3564 PerlIO *myfp;
1e422769 3565 int anum = 1;
a0d0e21e 3566
a02a5408 3567 Newx(cmdline, strlen(cmd) + (strlen(filename) * 2) + 10, char);
1e422769 3568 strcpy(cmdline, cmd);
3569 strcat(cmdline, " ");
3570 for (s = cmdline + strlen(cmdline); *filename; ) {
a0d0e21e
LW		 3571 *s++ = '\\';
3572 *s++ = *filename++;
3573 }
3574 strcpy(s, " 2>&1");
6ad3d225 3575 myfp = PerlProc_popen(cmdline, "r");
1e422769 3576 Safefree(cmdline);
3577
a0d0e21e 3578 if (myfp) {
0bcc34c2 3579 SV * const tmpsv = sv_newmortal();
6b88bc9c 3580 /* Need to save/restore 'PL_rs' ?? */
760ac839 3581 s = sv_gets(tmpsv, myfp, 0);
6ad3d225 3582 (void)PerlProc_pclose(myfp);
bd61b366 3583 if (s != NULL) {
1e422769 3584 int e;
3585 for (e = 1;
a0d0e21e 3586#ifdef HAS_SYS_ERRLIST
1e422769 3587 e <= sys_nerr
3588#endif
3589 ; e++)
3590 {
3591 /* you don't see this */
6136c704 3592 const char * const errmsg =
1e422769 3593#ifdef HAS_SYS_ERRLIST
3594 sys_errlist[e]
a0d0e21e 3595#else
1e422769 3596 strerror(e)
a0d0e21e 3597#endif
1e422769 3598 ;
3599 if (!errmsg)
3600 break;
3601 if (instr(s, errmsg)) {
3602 SETERRNO(e,0);
3603 return 0;
3604 }
a0d0e21e 3605 }
748a9306 3606 SETERRNO(0,0);
a0d0e21e
LW		 3607#ifndef EACCES
3608#define EACCES EPERM
3609#endif
1e422769 3610 if (instr(s, "cannot make"))
93189314 3611 SETERRNO(EEXIST,RMS_FEX);
1e422769 3612 else if (instr(s, "existing file"))
93189314 3613 SETERRNO(EEXIST,RMS_FEX);
1e422769 3614 else if (instr(s, "ile exists"))
93189314 3615 SETERRNO(EEXIST,RMS_FEX);
1e422769 3616 else if (instr(s, "non-exist"))
93189314 3617 SETERRNO(ENOENT,RMS_FNF);
1e422769 3618 else if (instr(s, "does not exist"))
93189314 3619 SETERRNO(ENOENT,RMS_FNF);
1e422769 3620 else if (instr(s, "not empty"))
93189314 3621 SETERRNO(EBUSY,SS_DEVOFFLINE);
1e422769 3622 else if (instr(s, "cannot access"))
93189314 3623 SETERRNO(EACCES,RMS_PRV);
a0d0e21e 3624 else
93189314 3625 SETERRNO(EPERM,RMS_PRV);
a0d0e21e
LW		 3626 return 0;
3627 }
3628 else { /* some mkdirs return no failure indication */
6b88bc9c 3629 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
911d147d 3630 if (PL_op->op_type == OP_RMDIR)
a0d0e21e
LW		 3631 anum = !anum;
3632 if (anum)
748a9306 3633 SETERRNO(0,0);
a0d0e21e 3634 else
93189314 3635 SETERRNO(EACCES,RMS_PRV); /* a guess */
a0d0e21e
LW		 3636 }
3637 return anum;
3638 }
3639 else
3640 return 0;
3641}
3642#endif
3643
0c54f65b
RGS		 3644/* This macro removes trailing slashes from a directory name.
3645 * Different operating and file systems take differently to
3646 * trailing slashes. According to POSIX 1003.1 1996 Edition
3647 * any number of trailing slashes should be allowed.
3648 * Thusly we snip them away so that even non-conforming
3649 * systems are happy.
3650 * We should probably do this "filtering" for all
3651 * the functions that expect (potentially) directory names:
3652 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3653 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3654
5c144d81 3655#define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
0c54f65b
RGS		 3656 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3657 do { \
3658 (len)--; \
3659 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3660 (tmps) = savepvn((tmps), (len)); \
3661 (copy) = TRUE; \
3662 }
3663
a0d0e21e
LW		 3664PP(pp_mkdir)
3665{
97aff369 3666 dVAR; dSP; dTARGET;
df25ddba 3667 STRLEN len;
5c144d81 3668 const char *tmps;
df25ddba 3669 bool copy = FALSE;
7452cf6a 3670 const int mode = (MAXARG > 1) ? POPi : 0777;
5a211162 3671
0c54f65b 3672 TRIMSLASHES(tmps,len,copy);
a0d0e21e
LW		 3673
3674 TAINT_PROPER("mkdir");
3675#ifdef HAS_MKDIR
b8ffc8df 3676 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
a0d0e21e 3677#else
0bcc34c2
AL		 3678 {
3679 int oldumask;
a0d0e21e 3680 SETi( dooneliner("mkdir", tmps) );
6ad3d225
GS		 3681 oldumask = PerlLIO_umask(0);
3682 PerlLIO_umask(oldumask);
3683 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
0bcc34c2 3684 }
a0d0e21e 3685#endif
df25ddba
JH		 3686 if (copy)
3687 Safefree(tmps);
a0d0e21e
LW		 3688 RETURN;
3689}
3690
3691PP(pp_rmdir)
3692{
97aff369 3693 dVAR; dSP; dTARGET;
0c54f65b 3694 STRLEN len;
5c144d81 3695 const char *tmps;
0c54f65b 3696 bool copy = FALSE;
a0d0e21e 3697
0c54f65b 3698 TRIMSLASHES(tmps,len,copy);
a0d0e21e
LW		 3699 TAINT_PROPER("rmdir");
3700#ifdef HAS_RMDIR
b8ffc8df 3701 SETi( PerlDir_rmdir(tmps) >= 0 );
a0d0e21e 3702#else
0c54f65b 3703 SETi( dooneliner("rmdir", tmps) );
a0d0e21e 3704#endif
0c54f65b
RGS		 3705 if (copy)
3706 Safefree(tmps);
a0d0e21e
LW		 3707 RETURN;
3708}
3709
3710/* Directory calls. */
3711
3712PP(pp_open_dir)
3713{
a0d0e21e 3714#if defined(Direntry_t) && defined(HAS_READDIR)
97aff369 3715 dVAR; dSP;
7452cf6a
AL		 3716 const char * const dirname = POPpconstx;
3717 GV * const gv = (GV*)POPs;
3718 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 3719
3720 if (!io)
3721 goto nope;
3722
3723 if (IoDIRP(io))
6ad3d225 3724 PerlDir_close(IoDIRP(io));
b8ffc8df 3725 if (!(IoDIRP(io) = PerlDir_open(dirname)))
a0d0e21e
LW		 3726 goto nope;
3727
3728 RETPUSHYES;
3729nope:
3730 if (!errno)
93189314 3731 SETERRNO(EBADF,RMS_DIR);
a0d0e21e
LW		 3732 RETPUSHUNDEF;
3733#else
cea2e8a9 3734 DIE(aTHX_ PL_no_dir_func, "opendir");
a0d0e21e
LW		 3735#endif
3736}
3737
3738PP(pp_readdir)
3739{
34b7f128
AMS		 3740#if !defined(Direntry_t) || !defined(HAS_READDIR)
3741 DIE(aTHX_ PL_no_dir_func, "readdir");
3742#else
fd8cd3a3 3743#if !defined(I_DIRENT) && !defined(VMS)
20ce7b12 3744 Direntry_t *readdir (DIR *);
a0d0e21e 3745#endif
97aff369 3746 dVAR;
34b7f128
AMS		 3747 dSP;
3748
3749 SV *sv;
f54cb97a 3750 const I32 gimme = GIMME;
7452cf6a
AL		 3751 GV * const gv = (GV *)POPs;
3752 register const Direntry_t *dp;
3753 register IO * const io = GvIOn(gv);
a0d0e21e 3754
3b7fbd4a
SP		 3755 if (!io || !IoDIRP(io)) {
3756 if(ckWARN(WARN_IO)) {
3757 Perl_warner(aTHX_ packWARN(WARN_IO),
3758 "readdir() attempted on invalid dirhandle %s", GvENAME(gv));
3759 }
3760 goto nope;
3761 }
a0d0e21e 3762
34b7f128
AMS		 3763 do {
3764 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
3765 if (!dp)
3766 break;
a0d0e21e 3767#ifdef DIRNAMLEN
34b7f128 3768 sv = newSVpvn(dp->d_name, dp->d_namlen);
a0d0e21e 3769#else
34b7f128 3770 sv = newSVpv(dp->d_name, 0);
fb73857a 3771#endif
3772#ifndef INCOMPLETE_TAINTS
34b7f128
AMS		 3773 if (!(IoFLAGS(io) & IOf_UNTAINT))
3774 SvTAINTED_on(sv);
a0d0e21e 3775#endif
34b7f128 3776 XPUSHs(sv_2mortal(sv));
a79db61d 3777 } while (gimme == G_ARRAY);
34b7f128
AMS		 3778
3779 if (!dp && gimme != G_ARRAY)
3780 goto nope;
3781
a0d0e21e
LW		 3782 RETURN;
3783
3784nope:
3785 if (!errno)
93189314 3786 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 3787 if (GIMME == G_ARRAY)
3788 RETURN;
3789 else
3790 RETPUSHUNDEF;
a0d0e21e
LW		 3791#endif
3792}
3793
3794PP(pp_telldir)
3795{
a0d0e21e 3796#if defined(HAS_TELLDIR) || defined(telldir)
27da23d5 3797 dVAR; dSP; dTARGET;
968dcd91
JH		 3798 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3799 /* XXX netbsd still seemed to.
3800 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3801 --JHI 1999-Feb-02 */
3802# if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
20ce7b12 3803 long telldir (DIR *);
dfe9444c 3804# endif
7452cf6a
AL		 3805 GV * const gv = (GV*)POPs;
3806 register IO * const io = GvIOn(gv);
a0d0e21e 3807
abc7ecad
SP		 3808 if (!io || !IoDIRP(io)) {
3809 if(ckWARN(WARN_IO)) {
3810 Perl_warner(aTHX_ packWARN(WARN_IO),
3811 "telldir() attempted on invalid dirhandle %s", GvENAME(gv));
3812 }
3813 goto nope;
3814 }
a0d0e21e 3815
6ad3d225 3816 PUSHi( PerlDir_tell(IoDIRP(io)) );
a0d0e21e
LW		 3817 RETURN;
3818nope:
3819 if (!errno)
93189314 3820 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 3821 RETPUSHUNDEF;
3822#else
cea2e8a9 3823 DIE(aTHX_ PL_no_dir_func, "telldir");
a0d0e21e
LW		 3824#endif
3825}
3826
3827PP(pp_seekdir)
3828{
a0d0e21e 3829#if defined(HAS_SEEKDIR) || defined(seekdir)
97aff369 3830 dVAR; dSP;
7452cf6a
AL		 3831 const long along = POPl;
3832 GV * const gv = (GV*)POPs;
3833 register IO * const io = GvIOn(gv);
a0d0e21e 3834
abc7ecad
SP		 3835 if (!io || !IoDIRP(io)) {
3836 if(ckWARN(WARN_IO)) {
3837 Perl_warner(aTHX_ packWARN(WARN_IO),
3838 "seekdir() attempted on invalid dirhandle %s", GvENAME(gv));
3839 }
3840 goto nope;
3841 }
6ad3d225 3842 (void)PerlDir_seek(IoDIRP(io), along);
a0d0e21e
LW		 3843
3844 RETPUSHYES;
3845nope:
3846 if (!errno)
93189314 3847 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 3848 RETPUSHUNDEF;
3849#else
cea2e8a9 3850 DIE(aTHX_ PL_no_dir_func, "seekdir");
a0d0e21e
LW		 3851#endif
3852}
3853
3854PP(pp_rewinddir)
3855{
a0d0e21e 3856#if defined(HAS_REWINDDIR) || defined(rewinddir)
97aff369 3857 dVAR; dSP;
7452cf6a
AL		 3858 GV * const gv = (GV*)POPs;
3859 register IO * const io = GvIOn(gv);
a0d0e21e 3860
abc7ecad
SP		 3861 if (!io || !IoDIRP(io)) {
3862 if(ckWARN(WARN_IO)) {
3863 Perl_warner(aTHX_ packWARN(WARN_IO),
3864 "rewinddir() attempted on invalid dirhandle %s", GvENAME(gv));
3865 }
a0d0e21e 3866 goto nope;
abc7ecad 3867 }
6ad3d225 3868 (void)PerlDir_rewind(IoDIRP(io));
a0d0e21e
LW		 3869 RETPUSHYES;
3870nope:
3871 if (!errno)
93189314 3872 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 3873 RETPUSHUNDEF;
3874#else
cea2e8a9 3875 DIE(aTHX_ PL_no_dir_func, "rewinddir");
a0d0e21e
LW		 3876#endif
3877}
3878
3879PP(pp_closedir)
3880{
a0d0e21e 3881#if defined(Direntry_t) && defined(HAS_READDIR)
97aff369 3882 dVAR; dSP;
7452cf6a
AL		 3883 GV * const gv = (GV*)POPs;
3884 register IO * const io = GvIOn(gv);
a0d0e21e 3885
abc7ecad
SP		 3886 if (!io || !IoDIRP(io)) {
3887 if(ckWARN(WARN_IO)) {
3888 Perl_warner(aTHX_ packWARN(WARN_IO),
3889 "closedir() attempted on invalid dirhandle %s", GvENAME(gv));
3890 }
3891 goto nope;
3892 }
a0d0e21e 3893#ifdef VOID_CLOSEDIR
6ad3d225 3894 PerlDir_close(IoDIRP(io));
a0d0e21e 3895#else
6ad3d225 3896 if (PerlDir_close(IoDIRP(io)) < 0) {
748a9306 3897 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
a0d0e21e 3898 goto nope;
748a9306 3899 }
a0d0e21e
LW		 3900#endif
3901 IoDIRP(io) = 0;
3902
3903 RETPUSHYES;
3904nope:
3905 if (!errno)
93189314 3906 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 3907 RETPUSHUNDEF;
3908#else
cea2e8a9 3909 DIE(aTHX_ PL_no_dir_func, "closedir");
a0d0e21e
LW		 3910#endif
3911}
3912
3913/* Process control. */
3914
3915PP(pp_fork)
3916{
44a8e56a 3917#ifdef HAS_FORK
97aff369 3918 dVAR; dSP; dTARGET;
761237fe 3919 Pid_t childpid;
a0d0e21e
LW		 3920
3921 EXTEND(SP, 1);
45bc9206 3922 PERL_FLUSHALL_FOR_CHILD;
52e18b1f 3923 childpid = PerlProc_fork();
a0d0e21e
LW		 3924 if (childpid < 0)
3925 RETSETUNDEF;
3926 if (!childpid) {
fafc274c 3927 GV * const tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV);
7452cf6a 3928 if (tmpgv) {
306196c3 3929 SvREADONLY_off(GvSV(tmpgv));
146174a9 3930 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
306196c3
MS		 3931 SvREADONLY_on(GvSV(tmpgv));
3932 }
4d76a344
RGS		 3933#ifdef THREADS_HAVE_PIDS
3934 PL_ppid = (IV)getppid();
3935#endif
ca0c25f6 3936#ifdef PERL_USES_PL_PIDSTATUS
3280af22 3937 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
ca0c25f6 3938#endif
a0d0e21e
LW		 3939 }
3940 PUSHi(childpid);
3941 RETURN;
3942#else
146174a9 3943# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
39644a26 3944 dSP; dTARGET;
146174a9
CB		 3945 Pid_t childpid;
3946
3947 EXTEND(SP, 1);
3948 PERL_FLUSHALL_FOR_CHILD;
3949 childpid = PerlProc_fork();
60fa28ff
GS		 3950 if (childpid == -1)
3951 RETSETUNDEF;
146174a9
CB		 3952 PUSHi(childpid);
3953 RETURN;
3954# else
0322a713 3955 DIE(aTHX_ PL_no_func, "fork");
146174a9 3956# endif
a0d0e21e
LW		 3957#endif
3958}
3959
3960PP(pp_wait)
3961{
301e8125 3962#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
97aff369 3963 dVAR; dSP; dTARGET;
761237fe 3964 Pid_t childpid;
a0d0e21e 3965 int argflags;
a0d0e21e 3966
4ffa73a3
JH		 3967 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
3968 childpid = wait4pid(-1, &argflags, 0);
3969 else {
3970 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
3971 errno == EINTR) {
3972 PERL_ASYNC_CHECK();
3973 }
0a0ada86 3974 }
68a29c53
GS		 3975# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3976 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
2fbb330f 3977 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
68a29c53 3978# else
2fbb330f 3979 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
68a29c53 3980# endif
44a8e56a 3981 XPUSHi(childpid);
a0d0e21e
LW		 3982 RETURN;
3983#else
0322a713 3984 DIE(aTHX_ PL_no_func, "wait");
a0d0e21e
LW		 3985#endif
3986}
3987
3988PP(pp_waitpid)
3989{
301e8125 3990#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
97aff369 3991 dVAR; dSP; dTARGET;
0bcc34c2
AL		 3992 const int optype = POPi;
3993 const Pid_t pid = TOPi;
2ec0bfb3 3994 Pid_t result;
a0d0e21e 3995 int argflags;
a0d0e21e 3996
4ffa73a3 3997 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
2ec0bfb3 3998 result = wait4pid(pid, &argflags, optype);
4ffa73a3 3999 else {
2ec0bfb3 4000 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4ffa73a3
JH		 4001 errno == EINTR) {
4002 PERL_ASYNC_CHECK();
4003 }
0a0ada86 4004 }
68a29c53
GS		 4005# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4006 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
2fbb330f 4007 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
68a29c53 4008# else
2fbb330f 4009 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
68a29c53 4010# endif
2ec0bfb3 4011 SETi(result);
a0d0e21e
LW		 4012 RETURN;
4013#else
0322a713 4014 DIE(aTHX_ PL_no_func, "waitpid");
a0d0e21e
LW		 4015#endif
4016}
4017
4018PP(pp_system)
4019{
97aff369 4020 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 4021 I32 value;
76ffd3b9 4022 int result;
a0d0e21e 4023
bbd7eb8a
RD		 4024 if (PL_tainting) {
4025 TAINT_ENV();
4026 while (++MARK <= SP) {
10516c54 4027 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
5a445156 4028 if (PL_tainted)
bbd7eb8a
RD		 4029 break;
4030 }
4031 MARK = ORIGMARK;
5a445156 4032 TAINT_PROPER("system");
a0d0e21e 4033 }
45bc9206 4034 PERL_FLUSHALL_FOR_CHILD;
273b0206 4035#if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
d7e492a4 4036 {
eb160463
GS		 4037 Pid_t childpid;
4038 int pp[2];
27da23d5 4039 I32 did_pipes = 0;
eb160463
GS		 4040
4041 if (PerlProc_pipe(pp) >= 0)
4042 did_pipes = 1;
4043 while ((childpid = PerlProc_fork()) == -1) {
4044 if (errno != EAGAIN) {
4045 value = -1;
4046 SP = ORIGMARK;
b59aed67 4047 XPUSHi(value);
eb160463
GS		 4048 if (did_pipes) {
4049 PerlLIO_close(pp[0]);
4050 PerlLIO_close(pp[1]);
4051 }
4052 RETURN;
4053 }
4054 sleep(5);
4055 }
4056 if (childpid > 0) {
4057 Sigsave_t ihand,qhand; /* place to save signals during system() */
4058 int status;
4059
4060 if (did_pipes)
4061 PerlLIO_close(pp[1]);
64ca3a65 4062#ifndef PERL_MICRO
8aad04aa
JH		 4063 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4064 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
64ca3a65 4065#endif
eb160463
GS		 4066 do {
4067 result = wait4pid(childpid, &status, 0);
4068 } while (result == -1 && errno == EINTR);
64ca3a65 4069#ifndef PERL_MICRO
eb160463
GS		 4070 (void)rsignal_restore(SIGINT, &ihand);
4071 (void)rsignal_restore(SIGQUIT, &qhand);
4072#endif
37038d91 4073 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
eb160463
GS		 4074 do_execfree(); /* free any memory child malloced on fork */
4075 SP = ORIGMARK;
4076 if (did_pipes) {
4077 int errkid;
bb7a0f54
MHM		 4078 unsigned n = 0;
4079 SSize_t n1;
eb160463
GS		 4080
4081 while (n < sizeof(int)) {
4082 n1 = PerlLIO_read(pp[0],
4083 (void*)(((char*)&errkid)+n),
4084 (sizeof(int)) - n);
4085 if (n1 <= 0)
4086 break;
4087 n += n1;
4088 }
4089 PerlLIO_close(pp[0]);
4090 if (n) { /* Error */
4091 if (n != sizeof(int))
4092 DIE(aTHX_ "panic: kid popen errno read");
4093 errno = errkid; /* Propagate errno from kid */
37038d91 4094 STATUS_NATIVE_CHILD_SET(-1);
eb160463
GS		 4095 }
4096 }
b59aed67 4097 XPUSHi(STATUS_CURRENT);
eb160463
GS		 4098 RETURN;
4099 }
4100 if (did_pipes) {
4101 PerlLIO_close(pp[0]);
d5a9bfb0 4102#if defined(HAS_FCNTL) && defined(F_SETFD)
eb160463 4103 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
d5a9bfb0 4104#endif
eb160463 4105 }
e0a1f643 4106 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4107 SV * const really = *++MARK;
e0a1f643
JH		 4108 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4109 }
4110 else if (SP - MARK != 1)
a0714e2c 4111 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
e0a1f643 4112 else {
8c074e2a 4113 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
e0a1f643
JH		 4114 }
4115 PerlProc__exit(-1);
d5a9bfb0 4116 }
c3293030 4117#else /* ! FORK or VMS or OS/2 */
922b1888
GS		 4118 PL_statusvalue = 0;
4119 result = 0;
911d147d 4120 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4121 SV * const really = *++MARK;
a0fd4948 4122# if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
54725af6
GS		 4123 value = (I32)do_aspawn(really, MARK, SP);
4124# else
c5be433b 4125 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
54725af6 4126# endif
a0d0e21e 4127 }
54725af6 4128 else if (SP - MARK != 1) {
a0fd4948 4129# if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
a0714e2c 4130 value = (I32)do_aspawn(NULL, MARK, SP);
54725af6 4131# else
a0714e2c 4132 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
54725af6
GS		 4133# endif
4134 }
a0d0e21e 4135 else {
8c074e2a 4136 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e 4137 }
922b1888
GS		 4138 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4139 result = 1;
2fbb330f 4140 STATUS_NATIVE_CHILD_SET(value);
a0d0e21e
LW		 4141 do_execfree();
4142 SP = ORIGMARK;
b59aed67 4143 XPUSHi(result ? value : STATUS_CURRENT);
a0d0e21e
LW		 4144#endif /* !FORK or VMS */
4145 RETURN;
4146}
4147
4148PP(pp_exec)
4149{
97aff369 4150 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 4151 I32 value;
4152
bbd7eb8a
RD		 4153 if (PL_tainting) {
4154 TAINT_ENV();
4155 while (++MARK <= SP) {
10516c54 4156 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
5a445156 4157 if (PL_tainted)
bbd7eb8a
RD		 4158 break;
4159 }
4160 MARK = ORIGMARK;
5a445156 4161 TAINT_PROPER("exec");
bbd7eb8a 4162 }
45bc9206 4163 PERL_FLUSHALL_FOR_CHILD;
533c011a 4164 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4165 SV * const really = *++MARK;
a0d0e21e
LW		 4166 value = (I32)do_aexec(really, MARK, SP);
4167 }
4168 else if (SP - MARK != 1)
4169#ifdef VMS
a0714e2c 4170 value = (I32)vms_do_aexec(NULL, MARK, SP);
a0d0e21e 4171#else
092bebab
JH		 4172# ifdef __OPEN_VM
4173 {
a0714e2c 4174 (void ) do_aspawn(NULL, MARK, SP);
092bebab
JH		 4175 value = 0;
4176 }
4177# else
a0714e2c 4178 value = (I32)do_aexec(NULL, MARK, SP);
092bebab 4179# endif
a0d0e21e
LW		 4180#endif
4181 else {
a0d0e21e 4182#ifdef VMS
8c074e2a 4183 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e 4184#else
092bebab 4185# ifdef __OPEN_VM
8c074e2a 4186 (void) do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
092bebab
JH		 4187 value = 0;
4188# else
8c074e2a 4189 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
092bebab 4190# endif
a0d0e21e
LW		 4191#endif
4192 }
146174a9 4193
a0d0e21e 4194 SP = ORIGMARK;
b59aed67 4195 XPUSHi(value);
a0d0e21e
LW		 4196 RETURN;
4197}
4198
a0d0e21e
LW		 4199PP(pp_getppid)
4200{
4201#ifdef HAS_GETPPID
97aff369 4202 dVAR; dSP; dTARGET;
4d76a344 4203# ifdef THREADS_HAVE_PIDS
e39f92a7
RGS		 4204 if (PL_ppid != 1 && getppid() == 1)
4205 /* maybe the parent process has died. Refresh ppid cache */
4206 PL_ppid = 1;
4d76a344
RGS		 4207 XPUSHi( PL_ppid );
4208# else
a0d0e21e 4209 XPUSHi( getppid() );
4d76a344 4210# endif
a0d0e21e
LW		 4211 RETURN;
4212#else
cea2e8a9 4213 DIE(aTHX_ PL_no_func, "getppid");
a0d0e21e
LW		 4214#endif
4215}
4216
4217PP(pp_getpgrp)
4218{
4219#ifdef HAS_GETPGRP
97aff369 4220 dVAR; dSP; dTARGET;
9853a804 4221 Pid_t pgrp;
0bcc34c2 4222 const Pid_t pid = (MAXARG < 1) ? 0 : SvIVx(POPs);
a0d0e21e 4223
c3293030 4224#ifdef BSD_GETPGRP
9853a804 4225 pgrp = (I32)BSD_GETPGRP(pid);
a0d0e21e 4226#else
146174a9 4227 if (pid != 0 && pid != PerlProc_getpid())
cea2e8a9 4228 DIE(aTHX_ "POSIX getpgrp can't take an argument");
9853a804 4229 pgrp = getpgrp();
a0d0e21e 4230#endif
9853a804 4231 XPUSHi(pgrp);
a0d0e21e
LW		 4232 RETURN;
4233#else
cea2e8a9 4234 DIE(aTHX_ PL_no_func, "getpgrp()");
a0d0e21e
LW		 4235#endif
4236}
4237
4238PP(pp_setpgrp)
4239{
4240#ifdef HAS_SETPGRP
97aff369 4241 dVAR; dSP; dTARGET;
d8a83dd3
JH		 4242 Pid_t pgrp;
4243 Pid_t pid;
a0d0e21e
LW		 4244 if (MAXARG < 2) {
4245 pgrp = 0;
4246 pid = 0;
4247 }
4248 else {
4249 pgrp = POPi;
4250 pid = TOPi;
4251 }
4252
4253 TAINT_PROPER("setpgrp");
c3293030
IZ		 4254#ifdef BSD_SETPGRP
4255 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
a0d0e21e 4256#else
146174a9
CB		 4257 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4258 || (pid != 0 && pid != PerlProc_getpid()))
4259 {
4260 DIE(aTHX_ "setpgrp can't take arguments");
4261 }
a0d0e21e
LW		 4262 SETi( setpgrp() >= 0 );
4263#endif /* USE_BSDPGRP */
4264 RETURN;
4265#else
cea2e8a9 4266 DIE(aTHX_ PL_no_func, "setpgrp()");
a0d0e21e
LW		 4267#endif
4268}
4269
4270PP(pp_getpriority)
4271{
a0d0e21e 4272#ifdef HAS_GETPRIORITY
97aff369 4273 dVAR; dSP; dTARGET;
0bcc34c2
AL		 4274 const int who = POPi;
4275 const int which = TOPi;
a0d0e21e
LW		 4276 SETi( getpriority(which, who) );
4277 RETURN;
4278#else
cea2e8a9 4279 DIE(aTHX_ PL_no_func, "getpriority()");
a0d0e21e
LW		 4280#endif
4281}
4282
4283PP(pp_setpriority)
4284{
a0d0e21e 4285#ifdef HAS_SETPRIORITY
97aff369 4286 dVAR; dSP; dTARGET;
0bcc34c2
AL		 4287 const int niceval = POPi;
4288 const int who = POPi;
4289 const int which = TOPi;
a0d0e21e
LW		 4290 TAINT_PROPER("setpriority");
4291 SETi( setpriority(which, who, niceval) >= 0 );
4292 RETURN;
4293#else
cea2e8a9 4294 DIE(aTHX_ PL_no_func, "setpriority()");
a0d0e21e
LW		 4295#endif
4296}
4297
4298/* Time calls. */
4299
4300PP(pp_time)
4301{
97aff369 4302 dVAR; dSP; dTARGET;
cbdc8872 4303#ifdef BIG_TIME
4608196e 4304 XPUSHn( time(NULL) );
cbdc8872 4305#else
4608196e 4306 XPUSHi( time(NULL) );
cbdc8872 4307#endif
a0d0e21e
LW		 4308 RETURN;
4309}
4310
a0d0e21e
LW		 4311PP(pp_tms)
4312{
9cad6237 4313#ifdef HAS_TIMES
97aff369 4314 dVAR;
39644a26 4315 dSP;
a0d0e21e 4316 EXTEND(SP, 4);
a0d0e21e 4317#ifndef VMS
3280af22 4318 (void)PerlProc_times(&PL_timesbuf);
a0d0e21e 4319#else
6b88bc9c 4320 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
76e3520e
GS		 4321 /* struct tms, though same data */
4322 /* is returned. */
a0d0e21e
LW		 4323#endif
4324
5311654c 4325 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick)));
a0d0e21e 4326 if (GIMME == G_ARRAY) {
5311654c
JH		 4327 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick)));
4328 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick)));
4329 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick)));
a0d0e21e
LW		 4330 }
4331 RETURN;
9cad6237 4332#else
2f42fcb0
JH		 4333# ifdef PERL_MICRO
4334 dSP;
4335 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4336 EXTEND(SP, 4);
4337 if (GIMME == G_ARRAY) {
4338 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4339 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4340 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4341 }
4342 RETURN;
4343# else
9cad6237 4344 DIE(aTHX_ "times not implemented");
2f42fcb0 4345# endif
55497cff 4346#endif /* HAS_TIMES */
a0d0e21e
LW		 4347}
4348
a4323dee 4349#ifdef LOCALTIME_EDGECASE_BROKEN
89261a6c 4350static struct tm *S_my_localtime (pTHX_ Time_t *tp)
a4323dee
MB		 4351{
4352 auto time_t T;
4353 auto struct tm *P;
4354
4355 /* No workarounds in the valid range */
4356 if (!tp || *tp < 0x7fff573f || *tp >= 0x80000000)
4357 return (localtime (tp));
4358
4359 /* This edge case is to workaround the undefined behaviour, where the
4360 * TIMEZONE makes the time go beyond the defined range.
4361 * gmtime (0x7fffffff) => 2038-01-19 03:14:07
4362 * If there is a negative offset in TZ, like MET-1METDST, some broken
4363 * implementations of localtime () (like AIX 5.2) barf with bogus
4364 * return values:
4365 * 0x7fffffff gmtime 2038-01-19 03:14:07
4366 * 0x7fffffff localtime 1901-12-13 21:45:51
4367 * 0x7fffffff mylocaltime 2038-01-19 04:14:07
4368 * 0x3c19137f gmtime 2001-12-13 20:45:51
4369 * 0x3c19137f localtime 2001-12-13 21:45:51
4370 * 0x3c19137f mylocaltime 2001-12-13 21:45:51
4371 * Given that legal timezones are typically between GMT-12 and GMT+12
4372 * we turn back the clock 23 hours before calling the localtime
4373 * function, and add those to the return value. This will never cause
3574fba9 4374 * day wrapping problems, since the edge case is Tue Jan *19*
a4323dee
MB		 4375 */
4376 T = *tp - 82800; /* 23 hour. allows up to GMT-23 */
4377 P = localtime (&T);
4378 P->tm_hour += 23;
4379 if (P->tm_hour >= 24) {
4380 P->tm_hour -= 24;
3574fba9
CW		 4381 P->tm_mday++; /* 18 -> 19 */
4382 P->tm_wday++; /* Mon -> Tue */
4383 P->tm_yday++; /* 18 -> 19 */
a4323dee
MB		 4384 }
4385 return (P);
4386} /* S_my_localtime */
4387#endif
4388
a0d0e21e
LW		 4389PP(pp_gmtime)
4390{
97aff369 4391 dVAR;
39644a26 4392 dSP;
a0d0e21e 4393 Time_t when;
bfed75c6 4394 const struct tm *tmbuf;
27da23d5
JH		 4395 static const char * const dayname[] =
4396 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4397 static const char * const monname[] =
4398 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4399 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
a0d0e21e
LW		 4400
4401 if (MAXARG < 1)
4402 (void)time(&when);
4403 else
cbdc8872 4404#ifdef BIG_TIME
4405 when = (Time_t)SvNVx(POPs);
4406#else
a0d0e21e 4407 when = (Time_t)SvIVx(POPs);
cbdc8872 4408#endif
a0d0e21e 4409
533c011a 4410 if (PL_op->op_type == OP_LOCALTIME)
a4323dee 4411#ifdef LOCALTIME_EDGECASE_BROKEN
89261a6c 4412 tmbuf = S_my_localtime(aTHX_ &when);
a4323dee 4413#else
a0d0e21e 4414 tmbuf = localtime(&when);
a4323dee 4415#endif
a0d0e21e
LW		 4416 else
4417 tmbuf = gmtime(&when);
4418
a0d0e21e 4419 if (GIMME != G_ARRAY) {
46fc3d4c 4420 SV *tsv;
9a5ff6d9
AB		 4421 EXTEND(SP, 1);
4422 EXTEND_MORTAL(1);
a0d0e21e
LW		 4423 if (!tmbuf)
4424 RETPUSHUNDEF;
be28567c 4425 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d",
f5a29b03
RB		 4426 dayname[tmbuf->tm_wday],
4427 monname[tmbuf->tm_mon],
be28567c
GS		 4428 tmbuf->tm_mday,
4429 tmbuf->tm_hour,
4430 tmbuf->tm_min,
4431 tmbuf->tm_sec,
4432 tmbuf->tm_year + 1900);
46fc3d4c 4433 PUSHs(sv_2mortal(tsv));
a0d0e21e
LW		 4434 }
4435 else if (tmbuf) {
9a5ff6d9
AB		 4436 EXTEND(SP, 9);
4437 EXTEND_MORTAL(9);
4438 PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec)));
c6419e06
JH		 4439 PUSHs(sv_2mortal(newSViv(tmbuf->tm_min)));
4440 PUSHs(sv_2mortal(newSViv(tmbuf->tm_hour)));
4441 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mday)));
4442 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mon)));
4443 PUSHs(sv_2mortal(newSViv(tmbuf->tm_year)));
4444 PUSHs(sv_2mortal(newSViv(tmbuf->tm_wday)));
4445 PUSHs(sv_2mortal(newSViv(tmbuf->tm_yday)));
4446 PUSHs(sv_2mortal(newSViv(tmbuf->tm_isdst)));
a0d0e21e
LW		 4447 }
4448 RETURN;
4449}
4450
4451PP(pp_alarm)
4452{
9cad6237 4453#ifdef HAS_ALARM
97aff369 4454 dVAR; dSP; dTARGET;
a0d0e21e 4455 int anum;
a0d0e21e
LW		 4456 anum = POPi;
4457 anum = alarm((unsigned int)anum);
4458 EXTEND(SP, 1);
4459 if (anum < 0)
4460 RETPUSHUNDEF;
c6419e06 4461 PUSHi(anum);
a0d0e21e
LW		 4462 RETURN;
4463#else
0322a713 4464 DIE(aTHX_ PL_no_func, "alarm");
a0d0e21e
LW		 4465#endif
4466}
4467
4468PP(pp_sleep)
4469{
97aff369 4470 dVAR; dSP; dTARGET;
a0d0e21e
LW		 4471 I32 duration;
4472 Time_t lasttime;
4473 Time_t when;
4474
4475 (void)time(&lasttime);
4476 if (MAXARG < 1)
76e3520e 4477 PerlProc_pause();
a0d0e21e
LW		 4478 else {
4479 duration = POPi;
76e3520e 4480 PerlProc_sleep((unsigned int)duration);
a0d0e21e
LW		 4481 }
4482 (void)time(&when);
4483 XPUSHi(when - lasttime);
4484 RETURN;
4485}
4486
4487/* Shared memory. */
c9f7ac20 4488/* Merged with some message passing. */
a0d0e21e 4489
a0d0e21e
LW		 4490PP(pp_shmwrite)
4491{
4492#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
97aff369 4493 dVAR; dSP; dMARK; dTARGET;
c9f7ac20
NC		 4494 const int op_type = PL_op->op_type;
4495 I32 value;
a0d0e21e 4496
c9f7ac20
NC		 4497 switch (op_type) {
4498 case OP_MSGSND:
4499 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4500 break;
4501 case OP_MSGRCV:
4502 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4503 break;
ca563b4e
NC		 4504 case OP_SEMOP:
4505 value = (I32)(do_semop(MARK, SP) >= 0);
4506 break;
c9f7ac20
NC		 4507 default:
4508 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4509 break;
4510 }
a0d0e21e 4511
a0d0e21e
LW		 4512 SP = MARK;
4513 PUSHi(value);
4514 RETURN;
4515#else
cea2e8a9 4516 return pp_semget();
a0d0e21e
LW		 4517#endif
4518}
4519
4520/* Semaphores. */
4521
4522PP(pp_semget)
4523{
4524#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
97aff369 4525 dVAR; dSP; dMARK; dTARGET;
0bcc34c2 4526 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 4527 SP = MARK;
4528 if (anum == -1)
4529 RETPUSHUNDEF;
4530 PUSHi(anum);
4531 RETURN;
4532#else
cea2e8a9 4533 DIE(aTHX_ "System V IPC is not implemented on this machine");
a0d0e21e
LW		 4534#endif
4535}
4536
4537PP(pp_semctl)
4538{
4539#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
97aff369 4540 dVAR; dSP; dMARK; dTARGET;
0bcc34c2 4541 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 4542 SP = MARK;
4543 if (anum == -1)
4544 RETSETUNDEF;
4545 if (anum != 0) {
4546 PUSHi(anum);
4547 }
4548 else {
8903cb82 4549 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e
LW		 4550 }
4551 RETURN;
4552#else
cea2e8a9 4553 return pp_semget();
a0d0e21e
LW		 4554#endif
4555}
4556
5cdc4e88
NC		 4557/* I can't const this further without getting warnings about the types of
4558 various arrays passed in from structures. */
4559static SV *
4560S_space_join_names_mortal(pTHX_ char *const *array)
4561{
7c58897d 4562 SV *target;
5cdc4e88
NC		 4563
4564 if (array && *array) {
7c58897d 4565 target = sv_2mortal(newSVpvs(""));
5cdc4e88
NC		 4566 while (1) {
4567 sv_catpv(target, *array);
4568 if (!*++array)
4569 break;
4570 sv_catpvs(target, " ");
4571 }
7c58897d
NC		 4572 } else {
4573 target = sv_mortalcopy(&PL_sv_no);
5cdc4e88
NC		 4574 }
4575 return target;
4576}
4577
a0d0e21e
LW		 4578/* Get system info. */
4579
a0d0e21e
LW		 4580PP(pp_ghostent)
4581{
693762b4 4582#if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
97aff369 4583 dVAR; dSP;
533c011a 4584 I32 which = PL_op->op_type;
a0d0e21e
LW		 4585 register char **elem;
4586 register SV *sv;
dc45a647 4587#ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4588 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4589 struct hostent *gethostbyname(Netdb_name_t);
4590 struct hostent *gethostent(void);
a0d0e21e
LW		 4591#endif
4592 struct hostent *hent;
4593 unsigned long len;
4594
4595 EXTEND(SP, 10);
edd309b7 4596 if (which == OP_GHBYNAME) {
dc45a647 4597#ifdef HAS_GETHOSTBYNAME
0bcc34c2 4598 const char* const name = POPpbytex;
edd309b7 4599 hent = PerlSock_gethostbyname(name);
dc45a647 4600#else
cea2e8a9 4601 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
dc45a647 4602#endif
edd309b7 4603 }
a0d0e21e 4604 else if (which == OP_GHBYADDR) {
dc45a647 4605#ifdef HAS_GETHOSTBYADDR
0bcc34c2
AL		 4606 const int addrtype = POPi;
4607 SV * const addrsv = POPs;
a0d0e21e 4608 STRLEN addrlen;
5bf7026a 4609 Netdb_host_t addr = (Netdb_host_t) SvPVbyte(addrsv, addrlen);
a0d0e21e 4610
4599a1de 4611 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
dc45a647 4612#else
cea2e8a9 4613 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
dc45a647 4614#endif
a0d0e21e
LW		 4615 }
4616 else
4617#ifdef HAS_GETHOSTENT
6ad3d225 4618 hent = PerlSock_gethostent();
a0d0e21e 4619#else
cea2e8a9 4620 DIE(aTHX_ PL_no_sock_func, "gethostent");
a0d0e21e
LW		 4621#endif
4622
4623#ifdef HOST_NOT_FOUND
10bc17b6
JH		 4624 if (!hent) {
4625#ifdef USE_REENTRANT_API
4626# ifdef USE_GETHOSTENT_ERRNO
4627 h_errno = PL_reentrant_buffer->_gethostent_errno;
4628# endif
4629#endif
37038d91 4630 STATUS_UNIX_SET(h_errno);
10bc17b6 4631 }
a0d0e21e
LW		 4632#endif
4633
4634 if (GIMME != G_ARRAY) {
4635 PUSHs(sv = sv_newmortal());
4636 if (hent) {
4637 if (which == OP_GHBYNAME) {
fd0af264 4638 if (hent->h_addr)
4639 sv_setpvn(sv, hent->h_addr, hent->h_length);
a0d0e21e
LW		 4640 }
4641 else
4642 sv_setpv(sv, (char*)hent->h_name);
4643 }
4644 RETURN;
4645 }
4646
4647 if (hent) {
7c58897d 4648 PUSHs(sv_2mortal(newSVpv((char*)hent->h_name, 0)));
931e0695 4649 PUSHs(space_join_names_mortal(hent->h_aliases));
7c58897d 4650 PUSHs(sv_2mortal(newSViv((IV)hent->h_addrtype)));
a0d0e21e 4651 len = hent->h_length;
7c58897d 4652 PUSHs(sv_2mortal(newSViv((IV)len)));
a0d0e21e
LW		 4653#ifdef h_addr
4654 for (elem = hent->h_addr_list; elem && *elem; elem++) {
7c58897d 4655 XPUSHs(sv_2mortal(newSVpvn(*elem, len)));
a0d0e21e
LW		 4656 }
4657#else
fd0af264 4658 if (hent->h_addr)
7c58897d
NC		 4659 PUSHs(newSVpvn(hent->h_addr, len));
4660 else
4661 PUSHs(sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 4662#endif /* h_addr */
4663 }
4664 RETURN;
4665#else
cea2e8a9 4666 DIE(aTHX_ PL_no_sock_func, "gethostent");
a0d0e21e
LW		 4667#endif
4668}
4669
a0d0e21e
LW		 4670PP(pp_gnetent)
4671{
693762b4 4672#if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
97aff369 4673 dVAR; dSP;
533c011a 4674 I32 which = PL_op->op_type;
a0d0e21e 4675 register SV *sv;
dc45a647 4676#ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4677 struct netent *getnetbyaddr(Netdb_net_t, int);
4678 struct netent *getnetbyname(Netdb_name_t);
4679 struct netent *getnetent(void);
8ac85365 4680#endif
a0d0e21e
LW		 4681 struct netent *nent;
4682
edd309b7 4683 if (which == OP_GNBYNAME){
dc45a647 4684#ifdef HAS_GETNETBYNAME
0bcc34c2 4685 const char * const name = POPpbytex;
edd309b7 4686 nent = PerlSock_getnetbyname(name);
dc45a647 4687#else
cea2e8a9 4688 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
dc45a647 4689#endif
edd309b7 4690 }
a0d0e21e 4691 else if (which == OP_GNBYADDR) {
dc45a647 4692#ifdef HAS_GETNETBYADDR
0bcc34c2
AL		 4693 const int addrtype = POPi;
4694 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
76e3520e 4695 nent = PerlSock_getnetbyaddr(addr, addrtype);
dc45a647 4696#else
cea2e8a9 4697 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
dc45a647 4698#endif
a0d0e21e
LW		 4699 }
4700 else
dc45a647 4701#ifdef HAS_GETNETENT
76e3520e 4702 nent = PerlSock_getnetent();
dc45a647 4703#else
cea2e8a9 4704 DIE(aTHX_ PL_no_sock_func, "getnetent");
dc45a647 4705#endif
a0d0e21e 4706
10bc17b6
JH		 4707#ifdef HOST_NOT_FOUND
4708 if (!nent) {
4709#ifdef USE_REENTRANT_API
4710# ifdef USE_GETNETENT_ERRNO
4711 h_errno = PL_reentrant_buffer->_getnetent_errno;
4712# endif
4713#endif
37038d91 4714 STATUS_UNIX_SET(h_errno);
10bc17b6
JH		 4715 }
4716#endif
4717
a0d0e21e
LW		 4718 EXTEND(SP, 4);
4719 if (GIMME != G_ARRAY) {
4720 PUSHs(sv = sv_newmortal());
4721 if (nent) {
4722 if (which == OP_GNBYNAME)
1e422769 4723 sv_setiv(sv, (IV)nent->n_net);
a0d0e21e
LW		 4724 else
4725 sv_setpv(sv, nent->n_name);
4726 }
4727 RETURN;
4728 }
4729
4730 if (nent) {
7c58897d 4731 PUSHs(sv_2mortal(newSVpv(nent->n_name, 0)));
931e0695 4732 PUSHs(space_join_names_mortal(nent->n_aliases));
7c58897d
NC		 4733 PUSHs(sv_2mortal(newSViv((IV)nent->n_addrtype)));
4734 PUSHs(sv_2mortal(newSViv((IV)nent->n_net)));
a0d0e21e
LW		 4735 }
4736
4737 RETURN;
4738#else
cea2e8a9 4739 DIE(aTHX_ PL_no_sock_func, "getnetent");
a0d0e21e
LW		 4740#endif
4741}
4742
a0d0e21e
LW		 4743PP(pp_gprotoent)
4744{
693762b4 4745#if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
97aff369 4746 dVAR; dSP;
533c011a 4747 I32 which = PL_op->op_type;
301e8125 4748 register SV *sv;
dc45a647 4749#ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4750 struct protoent *getprotobyname(Netdb_name_t);
4751 struct protoent *getprotobynumber(int);
4752 struct protoent *getprotoent(void);
8ac85365 4753#endif
a0d0e21e
LW		 4754 struct protoent *pent;
4755
edd309b7 4756 if (which == OP_GPBYNAME) {
e5c9fcd0 4757#ifdef HAS_GETPROTOBYNAME
0bcc34c2 4758 const char* const name = POPpbytex;
edd309b7 4759 pent = PerlSock_getprotobyname(name);
e5c9fcd0 4760#else
cea2e8a9 4761 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
e5c9fcd0 4762#endif
edd309b7
JH		 4763 }
4764 else if (which == OP_GPBYNUMBER) {
e5c9fcd0 4765#ifdef HAS_GETPROTOBYNUMBER
0bcc34c2 4766 const int number = POPi;
edd309b7 4767 pent = PerlSock_getprotobynumber(number);
e5c9fcd0 4768#else
edd309b7 4769 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
e5c9fcd0 4770#endif
edd309b7 4771 }
a0d0e21e 4772 else
e5c9fcd0 4773#ifdef HAS_GETPROTOENT
6ad3d225 4774 pent = PerlSock_getprotoent();
e5c9fcd0 4775#else
cea2e8a9 4776 DIE(aTHX_ PL_no_sock_func, "getprotoent");
e5c9fcd0 4777#endif
a0d0e21e
LW		 4778
4779 EXTEND(SP, 3);
4780 if (GIMME != G_ARRAY) {
4781 PUSHs(sv = sv_newmortal());
4782 if (pent) {
4783 if (which == OP_GPBYNAME)
1e422769 4784 sv_setiv(sv, (IV)pent->p_proto);
a0d0e21e
LW		 4785 else
4786 sv_setpv(sv, pent->p_name);
4787 }
4788 RETURN;
4789 }
4790
4791 if (pent) {
7c58897d 4792 PUSHs(sv_2mortal(newSVpv(pent->p_name, 0)));
931e0695 4793 PUSHs(space_join_names_mortal(pent->p_aliases));
7c58897d 4794 PUSHs(sv_2mortal(newSViv((IV)pent->p_proto)));
a0d0e21e
LW		 4795 }
4796
4797 RETURN;
4798#else
cea2e8a9 4799 DIE(aTHX_ PL_no_sock_func, "getprotoent");
a0d0e21e
LW		 4800#endif
4801}
4802
a0d0e21e
LW		 4803PP(pp_gservent)
4804{
693762b4 4805#if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
97aff369 4806 dVAR; dSP;
533c011a 4807 I32 which = PL_op->op_type;
a0d0e21e 4808 register SV *sv;
dc45a647 4809#ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4810 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
4811 struct servent *getservbyport(int, Netdb_name_t);
4812 struct servent *getservent(void);
8ac85365 4813#endif
a0d0e21e
LW		 4814 struct servent *sent;
4815
4816 if (which == OP_GSBYNAME) {
dc45a647 4817#ifdef HAS_GETSERVBYNAME
0bcc34c2
AL		 4818 const char * const proto = POPpbytex;
4819 const char * const name = POPpbytex;
bd61b366 4820 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
dc45a647 4821#else
cea2e8a9 4822 DIE(aTHX_ PL_no_sock_func, "getservbyname");
dc45a647 4823#endif
a0d0e21e
LW		 4824 }
4825 else if (which == OP_GSBYPORT) {
dc45a647 4826#ifdef HAS_GETSERVBYPORT
0bcc34c2 4827 const char * const proto = POPpbytex;
eb160463 4828 unsigned short port = (unsigned short)POPu;
36477c24 4829#ifdef HAS_HTONS
6ad3d225 4830 port = PerlSock_htons(port);
36477c24 4831#endif
bd61b366 4832 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
dc45a647 4833#else
cea2e8a9 4834 DIE(aTHX_ PL_no_sock_func, "getservbyport");
dc45a647 4835#endif
a0d0e21e
LW		 4836 }
4837 else
e5c9fcd0 4838#ifdef HAS_GETSERVENT
6ad3d225 4839 sent = PerlSock_getservent();
e5c9fcd0 4840#else
cea2e8a9 4841 DIE(aTHX_ PL_no_sock_func, "getservent");
e5c9fcd0 4842#endif
a0d0e21e
LW		 4843
4844 EXTEND(SP, 4);
4845 if (GIMME != G_ARRAY) {
4846 PUSHs(sv = sv_newmortal());
4847 if (sent) {
4848 if (which == OP_GSBYNAME) {
4849#ifdef HAS_NTOHS
6ad3d225 4850 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
a0d0e21e 4851#else
1e422769 4852 sv_setiv(sv, (IV)(sent->s_port));
a0d0e21e
LW		 4853#endif
4854 }
4855 else
4856 sv_setpv(sv, sent->s_name);
4857 }
4858 RETURN;
4859 }
4860
4861 if (sent) {
7c58897d 4862 PUSHs(sv_2mortal(newSVpv(sent->s_name, 0)));
931e0695 4863 PUSHs(space_join_names_mortal(sent->s_aliases));
a0d0e21e 4864#ifdef HAS_NTOHS
7c58897d 4865 PUSHs(sv_2mortal(newSViv((IV)PerlSock_ntohs(sent->s_port))));
a0d0e21e 4866#else
7c58897d 4867 PUSHs(sv_2mortal(newSViv((IV)(sent->s_port))));
a0d0e21e 4868#endif
7c58897d 4869 PUSHs(sv_2mortal(newSVpv(sent->s_proto, 0)));
a0d0e21e
LW		 4870 }
4871
4872 RETURN;
4873#else
cea2e8a9 4874 DIE(aTHX_ PL_no_sock_func, "getservent");
a0d0e21e
LW		 4875#endif
4876}
4877
4878PP(pp_shostent)
4879{
693762b4 4880#ifdef HAS_SETHOSTENT
97aff369 4881 dVAR; dSP;
76e3520e 4882 PerlSock_sethostent(TOPi);
a0d0e21e
LW		 4883 RETSETYES;
4884#else
cea2e8a9 4885 DIE(aTHX_ PL_no_sock_func, "sethostent");
a0d0e21e
LW		 4886#endif
4887}
4888
4889PP(pp_snetent)
4890{
693762b4 4891#ifdef HAS_SETNETENT
97aff369 4892 dVAR; dSP;
76e3520e 4893 PerlSock_setnetent(TOPi);
a0d0e21e
LW		 4894 RETSETYES;
4895#else
cea2e8a9 4896 DIE(aTHX_ PL_no_sock_func, "setnetent");
a0d0e21e
LW		 4897#endif
4898}
4899
4900PP(pp_sprotoent)
4901{
693762b4 4902#ifdef HAS_SETPROTOENT
97aff369 4903 dVAR; dSP;
76e3520e 4904 PerlSock_setprotoent(TOPi);
a0d0e21e
LW		 4905 RETSETYES;
4906#else
cea2e8a9 4907 DIE(aTHX_ PL_no_sock_func, "setprotoent");
a0d0e21e
LW		 4908#endif
4909}
4910
4911PP(pp_sservent)
4912{
693762b4 4913#ifdef HAS_SETSERVENT
97aff369 4914 dVAR; dSP;
76e3520e 4915 PerlSock_setservent(TOPi);
a0d0e21e
LW		 4916 RETSETYES;
4917#else
cea2e8a9 4918 DIE(aTHX_ PL_no_sock_func, "setservent");
a0d0e21e
LW		 4919#endif
4920}
4921
4922PP(pp_ehostent)
4923{
693762b4 4924#ifdef HAS_ENDHOSTENT
97aff369 4925 dVAR; dSP;
76e3520e 4926 PerlSock_endhostent();
924508f0 4927 EXTEND(SP,1);
a0d0e21e
LW		 4928 RETPUSHYES;
4929#else
cea2e8a9 4930 DIE(aTHX_ PL_no_sock_func, "endhostent");
a0d0e21e
LW		 4931#endif
4932}
4933
4934PP(pp_enetent)
4935{
693762b4 4936#ifdef HAS_ENDNETENT
97aff369 4937 dVAR; dSP;
76e3520e 4938 PerlSock_endnetent();
924508f0 4939 EXTEND(SP,1);
a0d0e21e
LW		 4940 RETPUSHYES;
4941#else
cea2e8a9 4942 DIE(aTHX_ PL_no_sock_func, "endnetent");
a0d0e21e
LW		 4943#endif
4944}
4945
4946PP(pp_eprotoent)
4947{
693762b4 4948#ifdef HAS_ENDPROTOENT
97aff369 4949 dVAR; dSP;
76e3520e 4950 PerlSock_endprotoent();
924508f0 4951 EXTEND(SP,1);
a0d0e21e
LW		 4952 RETPUSHYES;
4953#else
cea2e8a9 4954 DIE(aTHX_ PL_no_sock_func, "endprotoent");
a0d0e21e
LW		 4955#endif
4956}
4957
4958PP(pp_eservent)
4959{
693762b4 4960#ifdef HAS_ENDSERVENT
97aff369 4961 dVAR; dSP;
76e3520e 4962 PerlSock_endservent();
924508f0 4963 EXTEND(SP,1);
a0d0e21e
LW		 4964 RETPUSHYES;
4965#else
cea2e8a9 4966 DIE(aTHX_ PL_no_sock_func, "endservent");
a0d0e21e
LW		 4967#endif
4968}
4969
a0d0e21e
LW		 4970PP(pp_gpwent)
4971{
0994c4d0 4972#ifdef HAS_PASSWD
97aff369 4973 dVAR; dSP;
533c011a 4974 I32 which = PL_op->op_type;
a0d0e21e 4975 register SV *sv;
e3aefe8d 4976 struct passwd *pwent = NULL;
301e8125 4977 /*
bcf53261
JH		 4978 * We currently support only the SysV getsp* shadow password interface.
4979 * The interface is declared in <shadow.h> and often one needs to link
4980 * with -lsecurity or some such.
4981 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
4982 * (and SCO?)
4983 *
4984 * AIX getpwnam() is clever enough to return the encrypted password
4985 * only if the caller (euid?) is root.
4986 *
e549f1c5 4987 * There are at least three other shadow password APIs. Many platforms
bcf53261
JH		 4988 * seem to contain more than one interface for accessing the shadow
4989 * password databases, possibly for compatibility reasons.
3813c136 4990 * The getsp*() is by far he simplest one, the other two interfaces
bcf53261
JH		 4991 * are much more complicated, but also very similar to each other.
4992 *
4993 * <sys/types.h>
4994 * <sys/security.h>
4995 * <prot.h>
4996 * struct pr_passwd *getprpw*();
4997 * The password is in
3813c136
JH		 4998 * char getprpw*(...).ufld.fd_encrypt[]
4999 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
bcf53261
JH		 5000 *
5001 * <sys/types.h>
5002 * <sys/security.h>
5003 * <prot.h>
5004 * struct es_passwd *getespw*();
5005 * The password is in
5006 * char *(getespw*(...).ufld.fd_encrypt)
3813c136 5007 * Mention HAS_GETESPWNAM here so that Configure probes for it.
bcf53261 5008 *
e1920a95 5009 * <userpw.h> (AIX)
e549f1c5
JH		 5010 * struct userpw *getuserpw();
5011 * The password is in
5012 * char *(getuserpw(...)).spw_upw_passwd
5013 * (but the de facto standard getpwnam() should work okay)
5014 *
3813c136 5015 * Mention I_PROT here so that Configure probes for it.
bcf53261
JH		 5016 *
5017 * In HP-UX for getprpw*() the manual page claims that one should include
5018 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5019 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5020 * and pp_sys.c already includes <shadow.h> if there is such.
3813c136
JH		 5021 *
5022 * Note that <sys/security.h> is already probed for, but currently
5023 * it is only included in special cases.
301e8125 5024 *
bcf53261
JH		 5025 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5026 * be preferred interface, even though also the getprpw*() interface
5027 * is available) one needs to link with -lsecurity -ldb -laud -lm.
3813c136
JH		 5028 * One also needs to call set_auth_parameters() in main() before
5029 * doing anything else, whether one is using getespw*() or getprpw*().
5030 *
5031 * Note that accessing the shadow databases can be magnitudes
5032 * slower than accessing the standard databases.
bcf53261
JH		 5033 *
5034 * --jhi
5035 */
a0d0e21e 5036
9e5f0c48
JH		 5037# if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5038 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5039 * the pw_comment is left uninitialized. */
5040 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5041# endif
5042
e3aefe8d
JH		 5043 switch (which) {
5044 case OP_GPWNAM:
edd309b7 5045 {
0bcc34c2 5046 const char* const name = POPpbytex;
edd309b7
JH		 5047 pwent = getpwnam(name);
5048 }
5049 break;
e3aefe8d 5050 case OP_GPWUID:
edd309b7
JH		 5051 {
5052 Uid_t uid = POPi;
5053 pwent = getpwuid(uid);
5054 }
e3aefe8d
JH		 5055 break;
5056 case OP_GPWENT:
1883634f 5057# ifdef HAS_GETPWENT
e3aefe8d 5058 pwent = getpwent();
faea9016
IRC		 5059#ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5060 if (pwent) pwent = getpwnam(pwent->pw_name);
5061#endif
1883634f 5062# else
a45d1c96 5063 DIE(aTHX_ PL_no_func, "getpwent");
1883634f 5064# endif
e3aefe8d
JH		 5065 break;
5066 }
8c0bfa08 5067
a0d0e21e
LW		 5068 EXTEND(SP, 10);
5069 if (GIMME != G_ARRAY) {
5070 PUSHs(sv = sv_newmortal());
5071 if (pwent) {
5072 if (which == OP_GPWNAM)
1883634f 5073# if Uid_t_sign <= 0
1e422769 5074 sv_setiv(sv, (IV)pwent->pw_uid);
1883634f 5075# else
23dcd6c8 5076 sv_setuv(sv, (UV)pwent->pw_uid);
1883634f 5077# endif
a0d0e21e
LW		 5078 else
5079 sv_setpv(sv, pwent->pw_name);
5080 }
5081 RETURN;
5082 }
5083
5084 if (pwent) {
7c58897d 5085 PUSHs(sv_2mortal(newSVpv(pwent->pw_name, 0)));
6ee623d5 5086
7c58897d 5087 PUSHs(sv = sv_2mortal(newSViv(0)));
3813c136
JH		 5088 /* If we have getspnam(), we try to dig up the shadow
5089 * password. If we are underprivileged, the shadow
5090 * interface will set the errno to EACCES or similar,
5091 * and return a null pointer. If this happens, we will
5092 * use the dummy password (usually "*" or "x") from the
5093 * standard password database.
5094 *
5095 * In theory we could skip the shadow call completely
5096 * if euid != 0 but in practice we cannot know which
5097 * security measures are guarding the shadow databases
5098 * on a random platform.
5099 *
5100 * Resist the urge to use additional shadow interfaces.
5101 * Divert the urge to writing an extension instead.
5102 *
5103 * --jhi */
e549f1c5
JH		 5104 /* Some AIX setups falsely(?) detect some getspnam(), which
5105 * has a different API than the Solaris/IRIX one. */
5106# if defined(HAS_GETSPNAM) && !defined(_AIX)
3813c136 5107 {
0bcc34c2
AL		 5108 const int saverrno = errno;
5109 const struct spwd * const spwent = getspnam(pwent->pw_name);
5110 /* Save and restore errno so that
3813c136
JH		 5111 * underprivileged attempts seem
5112 * to have never made the unsccessful
5113 * attempt to retrieve the shadow password. */
3813c136
JH		 5114 errno = saverrno;
5115 if (spwent && spwent->sp_pwdp)
5116 sv_setpv(sv, spwent->sp_pwdp);
5117 }
f1066039 5118# endif
e020c87d 5119# ifdef PWPASSWD
3813c136
JH		 5120 if (!SvPOK(sv)) /* Use the standard password, then. */
5121 sv_setpv(sv, pwent->pw_passwd);
e020c87d 5122# endif
3813c136 5123
1883634f 5124# ifndef INCOMPLETE_TAINTS
3813c136
JH		 5125 /* passwd is tainted because user himself can diddle with it.
5126 * admittedly not much and in a very limited way, but nevertheless. */
2959b6e3 5127 SvTAINTED_on(sv);
1883634f 5128# endif
6ee623d5 5129
1883634f 5130# if Uid_t_sign <= 0
7c58897d 5131 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_uid)));
1883634f 5132# else
7c58897d 5133 PUSHs(sv_2mortal(newSVuv((UV)pwent->pw_uid)));
1883634f 5134# endif
6ee623d5 5135
1883634f 5136# if Uid_t_sign <= 0
7c58897d 5137 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_gid)));
1883634f 5138# else
7c58897d 5139 PUSHs(sv_2mortal(newSVuv((UV)pwent->pw_gid)));
1883634f 5140# endif
3813c136
JH		 5141 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5142 * because of the poor interface of the Perl getpw*(),
5143 * not because there's some standard/convention saying so.
5144 * A better interface would have been to return a hash,
5145 * but we are accursed by our history, alas. --jhi. */
1883634f 5146# ifdef PWCHANGE
7c58897d 5147 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_change)));
6ee623d5 5148# else
1883634f 5149# ifdef PWQUOTA
7c58897d 5150 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_quota)));
1883634f 5151# else
a1757be1 5152# ifdef PWAGE
7c58897d
NC		 5153 PUSHs(sv_2mortal(newSVpv(pwent->pw_age, 0)));
5154# else
5155 /* I think that you can never get this compiled, but just in case. */
5156 PUSHs(sv_mortalcopy(&PL_sv_no));
a1757be1 5157# endif
6ee623d5
GS		 5158# endif
5159# endif
6ee623d5 5160
3813c136
JH		 5161 /* pw_class and pw_comment are mutually exclusive--.
5162 * see the above note for pw_change, pw_quota, and pw_age. */
1883634f 5163# ifdef PWCLASS
7c58897d 5164 PUSHs(sv_2mortal(newSVpv(pwent->pw_class, 0)));
1883634f
JH		 5165# else
5166# ifdef PWCOMMENT
7c58897d
NC		 5167 PUSHs(sv_2mortal(newSVpv(pwent->pw_comment, 0)));
5168# else
5169 /* I think that you can never get this compiled, but just in case. */
5170 PUSHs(sv_mortalcopy(&PL_sv_no));
1883634f 5171# endif
6ee623d5 5172# endif
6ee623d5 5173
1883634f 5174# ifdef PWGECOS
7c58897d
NC		 5175 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5176# else
5177 PUSHs(sv_mortalcopy(&PL_sv_no));
1883634f
JH		 5178# endif
5179# ifndef INCOMPLETE_TAINTS
d2719217 5180 /* pw_gecos is tainted because user himself can diddle with it. */
fb73857a 5181 SvTAINTED_on(sv);
1883634f 5182# endif
6ee623d5 5183
7c58897d 5184 PUSHs(sv_2mortal(newSVpv(pwent->pw_dir, 0)));
6ee623d5 5185
7c58897d 5186 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
1883634f 5187# ifndef INCOMPLETE_TAINTS
4602f195
JH		 5188 /* pw_shell is tainted because user himself can diddle with it. */
5189 SvTAINTED_on(sv);
1883634f 5190# endif
6ee623d5 5191
1883634f 5192# ifdef PWEXPIRE
7c58897d 5193 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_expire)));
1883634f 5194# endif
a0d0e21e
LW		 5195 }
5196 RETURN;
5197#else
af51a00e 5198 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5199#endif
5200}
5201
5202PP(pp_spwent)
5203{
d493b042 5204#if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
97aff369 5205 dVAR; dSP;
a0d0e21e
LW		 5206 setpwent();
5207 RETPUSHYES;
5208#else
cea2e8a9 5209 DIE(aTHX_ PL_no_func, "setpwent");
a0d0e21e
LW		 5210#endif
5211}
5212
5213PP(pp_epwent)
5214{
28e8609d 5215#if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
97aff369 5216 dVAR; dSP;
a0d0e21e
LW		 5217 endpwent();
5218 RETPUSHYES;
5219#else
cea2e8a9 5220 DIE(aTHX_ PL_no_func, "endpwent");
a0d0e21e
LW		 5221#endif
5222}
5223
a0d0e21e
LW		 5224PP(pp_ggrent)
5225{
0994c4d0 5226#ifdef HAS_GROUP
97aff369 5227 dVAR; dSP;
6136c704
AL		 5228 const I32 which = PL_op->op_type;
5229 const struct group *grent;
a0d0e21e 5230
edd309b7 5231 if (which == OP_GGRNAM) {
0bcc34c2 5232 const char* const name = POPpbytex;
6136c704 5233 grent = (const struct group *)getgrnam(name);
edd309b7
JH		 5234 }
5235 else if (which == OP_GGRGID) {
0bcc34c2 5236 const Gid_t gid = POPi;
6136c704 5237 grent = (const struct group *)getgrgid(gid);
edd309b7 5238 }
a0d0e21e 5239 else
0994c4d0 5240#ifdef HAS_GETGRENT
a0d0e21e 5241 grent = (struct group *)getgrent();
0994c4d0
JH		 5242#else
5243 DIE(aTHX_ PL_no_func, "getgrent");
5244#endif
a0d0e21e
LW		 5245
5246 EXTEND(SP, 4);
5247 if (GIMME != G_ARRAY) {
6136c704
AL		 5248 SV * const sv = sv_newmortal();
5249
5250 PUSHs(sv);
a0d0e21e
LW		 5251 if (grent) {
5252 if (which == OP_GGRNAM)
1e422769 5253 sv_setiv(sv, (IV)grent->gr_gid);
a0d0e21e
LW		 5254 else
5255 sv_setpv(sv, grent->gr_name);
5256 }
5257 RETURN;
5258 }
5259
5260 if (grent) {
7c58897d 5261 PUSHs(sv_2mortal(newSVpv(grent->gr_name, 0)));
28e8609d 5262
28e8609d 5263#ifdef GRPASSWD
7c58897d
NC		 5264 PUSHs(sv_2mortal(newSVpv(grent->gr_passwd, 0)));
5265#else
5266 PUSHs(sv_mortalcopy(&PL_sv_no));
28e8609d
JH		 5267#endif
5268
7c58897d 5269 PUSHs(sv_2mortal(newSViv((IV)grent->gr_gid)));
28e8609d 5270
5b56e7c5 5271#if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
3d7e8424
JH		 5272 /* In UNICOS/mk (_CRAYMPP) the multithreading
5273 * versions (getgrnam_r, getgrgid_r)
5274 * seem to return an illegal pointer
5275 * as the group members list, gr_mem.
5276 * getgrent() doesn't even have a _r version
5277 * but the gr_mem is poisonous anyway.
5278 * So yes, you cannot get the list of group
5279 * members if building multithreaded in UNICOS/mk. */
931e0695 5280 PUSHs(space_join_names_mortal(grent->gr_mem));
3d7e8424 5281#endif
a0d0e21e
LW		 5282 }
5283
5284 RETURN;
5285#else
af51a00e 5286 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5287#endif
5288}
5289
5290PP(pp_sgrent)
5291{
28e8609d 5292#if defined(HAS_GROUP) && defined(HAS_SETGRENT)
97aff369 5293 dVAR; dSP;
a0d0e21e
LW		 5294 setgrent();
5295 RETPUSHYES;
5296#else
cea2e8a9 5297 DIE(aTHX_ PL_no_func, "setgrent");
a0d0e21e
LW		 5298#endif
5299}
5300
5301PP(pp_egrent)
5302{
28e8609d 5303#if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
97aff369 5304 dVAR; dSP;
a0d0e21e
LW		 5305 endgrent();
5306 RETPUSHYES;
5307#else
cea2e8a9 5308 DIE(aTHX_ PL_no_func, "endgrent");
a0d0e21e
LW		 5309#endif
5310}
5311
5312PP(pp_getlogin)
5313{
a0d0e21e 5314#ifdef HAS_GETLOGIN
97aff369 5315 dVAR; dSP; dTARGET;
a0d0e21e
LW		 5316 char *tmps;
5317 EXTEND(SP, 1);
76e3520e 5318 if (!(tmps = PerlProc_getlogin()))
a0d0e21e
LW		 5319 RETPUSHUNDEF;
5320 PUSHp(tmps, strlen(tmps));
5321 RETURN;
5322#else
cea2e8a9 5323 DIE(aTHX_ PL_no_func, "getlogin");
a0d0e21e
LW		 5324#endif
5325}
5326
5327/* Miscellaneous. */
5328
5329PP(pp_syscall)
5330{
d2719217 5331#ifdef HAS_SYSCALL
97aff369 5332 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 5333 register I32 items = SP - MARK;
5334 unsigned long a[20];
5335 register I32 i = 0;
5336 I32 retval = -1;
5337
3280af22 5338 if (PL_tainting) {
a0d0e21e 5339 while (++MARK <= SP) {
bbce6d69 5340 if (SvTAINTED(*MARK)) {
5341 TAINT;
5342 break;
5343 }
a0d0e21e
LW		 5344 }
5345 MARK = ORIGMARK;
5346 TAINT_PROPER("syscall");
5347 }
5348
5349 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5350 * or where sizeof(long) != sizeof(char*). But such machines will
5351 * not likely have syscall implemented either, so who cares?
5352 */
5353 while (++MARK <= SP) {
5354 if (SvNIOK(*MARK) || !i)
5355 a[i++] = SvIV(*MARK);
3280af22 5356 else if (*MARK == &PL_sv_undef)
748a9306 5357 a[i++] = 0;
301e8125 5358 else
8b6b16e7 5359 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
a0d0e21e
LW		 5360 if (i > 15)
5361 break;
5362 }
5363 switch (items) {
5364 default:
cea2e8a9 5365 DIE(aTHX_ "Too many args to syscall");
a0d0e21e 5366 case 0:
cea2e8a9 5367 DIE(aTHX_ "Too few args to syscall");
a0d0e21e
LW		 5368 case 1:
5369 retval = syscall(a[0]);
5370 break;
5371 case 2:
5372 retval = syscall(a[0],a[1]);
5373 break;
5374 case 3:
5375 retval = syscall(a[0],a[1],a[2]);
5376 break;
5377 case 4:
5378 retval = syscall(a[0],a[1],a[2],a[3]);
5379 break;
5380 case 5:
5381 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5382 break;
5383 case 6:
5384 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5385 break;
5386 case 7:
5387 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5388 break;
5389 case 8:
5390 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5391 break;
5392#ifdef atarist
5393 case 9:
5394 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
5395 break;
5396 case 10:
5397 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
5398 break;
5399 case 11:
5400 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5401 a[10]);
5402 break;
5403 case 12:
5404 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5405 a[10],a[11]);
5406 break;
5407 case 13:
5408 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5409 a[10],a[11],a[12]);
5410 break;
5411 case 14:
5412 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5413 a[10],a[11],a[12],a[13]);
5414 break;
5415#endif /* atarist */
5416 }
5417 SP = ORIGMARK;
5418 PUSHi(retval);
5419 RETURN;
5420#else
cea2e8a9 5421 DIE(aTHX_ PL_no_func, "syscall");
a0d0e21e
LW		 5422#endif
5423}
5424
ff68c719 5425#ifdef FCNTL_EMULATE_FLOCK
301e8125 5426
ff68c719 5427/* XXX Emulate flock() with fcntl().
5428 What's really needed is a good file locking module.
5429*/
5430
cea2e8a9
GS		 5431static int
5432fcntl_emulate_flock(int fd, int operation)
ff68c719 5433{
5434 struct flock flock;
301e8125 5435
ff68c719 5436 switch (operation & ~LOCK_NB) {
5437 case LOCK_SH:
5438 flock.l_type = F_RDLCK;
5439 break;
5440 case LOCK_EX:
5441 flock.l_type = F_WRLCK;
5442 break;
5443 case LOCK_UN:
5444 flock.l_type = F_UNLCK;
5445 break;
5446 default:
5447 errno = EINVAL;
5448 return -1;
5449 }
5450 flock.l_whence = SEEK_SET;
d9b3e12d 5451 flock.l_start = flock.l_len = (Off_t)0;
301e8125 5452
ff68c719 5453 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5454}
5455
5456#endif /* FCNTL_EMULATE_FLOCK */
5457
5458#ifdef LOCKF_EMULATE_FLOCK
16d20bd9
AD		 5459
5460/* XXX Emulate flock() with lockf(). This is just to increase
5461 portability of scripts. The calls are not completely
5462 interchangeable. What's really needed is a good file
5463 locking module.
5464*/
5465
76c32331 5466/* The lockf() constants might have been defined in <unistd.h>.
5467 Unfortunately, <unistd.h> causes troubles on some mixed
5468 (BSD/POSIX) systems, such as SunOS 4.1.3.
16d20bd9
AD		 5469
5470 Further, the lockf() constants aren't POSIX, so they might not be
5471 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5472 just stick in the SVID values and be done with it. Sigh.
5473*/
5474
5475# ifndef F_ULOCK
5476# define F_ULOCK 0 /* Unlock a previously locked region */
5477# endif
5478# ifndef F_LOCK
5479# define F_LOCK 1 /* Lock a region for exclusive use */
5480# endif
5481# ifndef F_TLOCK
5482# define F_TLOCK 2 /* Test and lock a region for exclusive use */
5483# endif
5484# ifndef F_TEST
5485# define F_TEST 3 /* Test a region for other processes locks */
5486# endif
5487
cea2e8a9
GS		 5488static int
5489lockf_emulate_flock(int fd, int operation)
16d20bd9
AD		 5490{
5491 int i;
0bcc34c2 5492 const int save_errno = errno;
84902520
TB		 5493 Off_t pos;
5494
5495 /* flock locks entire file so for lockf we need to do the same */
6ad3d225 5496 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
84902520 5497 if (pos > 0) /* is seekable and needs to be repositioned */
6ad3d225 5498 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
08b714dd 5499 pos = -1; /* seek failed, so don't seek back afterwards */
84902520
TB		 5500 errno = save_errno;
5501
16d20bd9
AD		 5502 switch (operation) {
5503
5504 /* LOCK_SH - get a shared lock */
5505 case LOCK_SH:
5506 /* LOCK_EX - get an exclusive lock */
5507 case LOCK_EX:
5508 i = lockf (fd, F_LOCK, 0);
5509 break;
5510
5511 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5512 case LOCK_SH|LOCK_NB:
5513 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5514 case LOCK_EX|LOCK_NB:
5515 i = lockf (fd, F_TLOCK, 0);
5516 if (i == -1)
5517 if ((errno == EAGAIN) || (errno == EACCES))
5518 errno = EWOULDBLOCK;
5519 break;
5520
ff68c719 5521 /* LOCK_UN - unlock (non-blocking is a no-op) */
16d20bd9 5522 case LOCK_UN:
ff68c719 5523 case LOCK_UN|LOCK_NB:
16d20bd9
AD		 5524 i = lockf (fd, F_ULOCK, 0);
5525 break;
5526
5527 /* Default - can't decipher operation */
5528 default:
5529 i = -1;
5530 errno = EINVAL;
5531 break;
5532 }
84902520
TB		 5533
5534 if (pos > 0) /* need to restore position of the handle */
6ad3d225 5535 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
84902520 5536
16d20bd9
AD		 5537 return (i);
5538}
ff68c719 5539
5540#endif /* LOCKF_EMULATE_FLOCK */
241d1a3b
NC		 5541
5542/*
5543 * Local variables:
5544 * c-indentation-style: bsd
5545 * c-basic-offset: 4
5546 * indent-tabs-mode: t
5547 * End:
5548 *
37442d52
RGS		 5549 * ex: set ts=8 sts=4 sw=4 noet:
5550 */
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