This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
https://perl5.git.perl.org / perl5.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Make usage of :unique emit a deprecation warning.
[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) {
7452cf6a 333 const char * const type = PL_curcop->cop_io ? SvPV_nolen_const(PL_curcop->cop_io) : 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)
54310121 340 ;
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)
a0d0e21e 348 ;
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
cb50131a 456 Perl_warn(aTHX_ "%"SVf, 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
cb50131a 520 DIE(aTHX_ "%"SVf, 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");
5b468f54 540 if ((io = GvIOp(gv)))
36477c24 541 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 542
c4420975
AL		 543 if (io) {
544 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
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;
5b468f54 581 IO *io;
1d603a67 582 MAGIC *mg;
c4420975 583 GV * const gv = (MAXARG == 0) ? PL_defoutgv : (GV*)POPs;
1d603a67 584
5b468f54
AMS		 585 if (gv && (io = GvIO(gv))
586 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
587 {
1d603a67 588 PUSHMARK(SP);
5b468f54 589 XPUSHs(SvTIED_obj((SV*)io, mg));
1d603a67
GB		 590 PUTBACK;
591 ENTER;
864dbfa3 592 call_method("CLOSE", G_SCALAR);
1d603a67
GB		 593 LEAVE;
594 SPAGAIN;
595 RETURN;
596 }
a0d0e21e 597 EXTEND(SP, 1);
54310121 598 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 599 RETURN;
600}
601
602PP(pp_pipe_op)
603{
a0d0e21e 604#ifdef HAS_PIPE
97aff369 605 dVAR;
9cad6237 606 dSP;
a0d0e21e
LW		 607 register IO *rstio;
608 register IO *wstio;
609 int fd[2];
610
c4420975
AL		 611 GV * const wgv = (GV*)POPs;
612 GV * const rgv = (GV*)POPs;
a0d0e21e
LW		 613
614 if (!rgv || !wgv)
615 goto badexit;
616
4633a7c4 617 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
cea2e8a9 618 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 619 rstio = GvIOn(rgv);
620 wstio = GvIOn(wgv);
621
622 if (IoIFP(rstio))
623 do_close(rgv, FALSE);
624 if (IoIFP(wstio))
625 do_close(wgv, FALSE);
626
6ad3d225 627 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 628 goto badexit;
629
460c8493
IZ		 630 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
631 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 632 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 633 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 634 IoTYPE(rstio) = IoTYPE_RDONLY;
635 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 636
637 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 638 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
6ad3d225 639 else PerlLIO_close(fd[0]);
760ac839 640 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
6ad3d225 641 else PerlLIO_close(fd[1]);
a0d0e21e
LW		 642 goto badexit;
643 }
4771b018
GS		 644#if defined(HAS_FCNTL) && defined(F_SETFD)
645 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
646 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
647#endif
a0d0e21e
LW		 648 RETPUSHYES;
649
650badexit:
651 RETPUSHUNDEF;
652#else
cea2e8a9 653 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 654#endif
655}
656
657PP(pp_fileno)
658{
27da23d5 659 dVAR; dSP; dTARGET;
a0d0e21e
LW		 660 GV *gv;
661 IO *io;
760ac839 662 PerlIO *fp;
4592e6ca
NIS		 663 MAGIC *mg;
664
a0d0e21e
LW		 665 if (MAXARG < 1)
666 RETPUSHUNDEF;
667 gv = (GV*)POPs;
4592e6ca 668
5b468f54
AMS		 669 if (gv && (io = GvIO(gv))
670 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
671 {
4592e6ca 672 PUSHMARK(SP);
5b468f54 673 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 674 PUTBACK;
675 ENTER;
864dbfa3 676 call_method("FILENO", G_SCALAR);
4592e6ca
NIS		 677 LEAVE;
678 SPAGAIN;
679 RETURN;
680 }
681
c289d2f7
JH		 682 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
683 /* Can't do this because people seem to do things like
684 defined(fileno($foo)) to check whether $foo is a valid fh.
685 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
686 report_evil_fh(gv, io, PL_op->op_type);
687 */
a0d0e21e 688 RETPUSHUNDEF;
c289d2f7
JH		 689 }
690
760ac839 691 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 692 RETURN;
693}
694
695PP(pp_umask)
696{
97aff369 697 dVAR;
27da23d5 698 dSP;
d7e492a4 699#ifdef HAS_UMASK
27da23d5 700 dTARGET;
761237fe 701 Mode_t anum;
a0d0e21e 702
a0d0e21e 703 if (MAXARG < 1) {
6ad3d225
GS		 704 anum = PerlLIO_umask(0);
705 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 706 }
707 else
6ad3d225 708 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 709 TAINT_PROPER("umask");
710 XPUSHi(anum);
711#else
a0288114 712 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS		 713 * Otherwise it's harmless and more useful to just return undef
714 * since 'group' and 'other' concepts probably don't exist here. */
715 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 716 DIE(aTHX_ "umask not implemented");
6b88bc9c 717 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 718#endif
719 RETURN;
720}
721
722PP(pp_binmode)
723{
27da23d5 724 dVAR; dSP;
a0d0e21e
LW		 725 GV *gv;
726 IO *io;
760ac839 727 PerlIO *fp;
4592e6ca 728 MAGIC *mg;
a0714e2c 729 SV *discp = NULL;
a0d0e21e
LW		 730
731 if (MAXARG < 1)
732 RETPUSHUNDEF;
60382766 733 if (MAXARG > 1) {
16fe6d59 734 discp = POPs;
60382766 735 }
a0d0e21e 736
301e8125 737 gv = (GV*)POPs;
4592e6ca 738
5b468f54
AMS		 739 if (gv && (io = GvIO(gv))
740 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
741 {
4592e6ca 742 PUSHMARK(SP);
5b468f54 743 XPUSHs(SvTIED_obj((SV*)io, mg));
16fe6d59
GS		 744 if (discp)
745 XPUSHs(discp);
4592e6ca
NIS		 746 PUTBACK;
747 ENTER;
864dbfa3 748 call_method("BINMODE", G_SCALAR);
4592e6ca
NIS		 749 LEAVE;
750 SPAGAIN;
751 RETURN;
752 }
a0d0e21e
LW		 753
754 EXTEND(SP, 1);
50f846a7 755 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7
JH		 756 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
757 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 758 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC		 759 RETPUSHUNDEF;
760 }
a0d0e21e 761
40d98b49 762 PUTBACK;
60382766 763 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
bd61b366 764 (discp) ? SvPV_nolen_const(discp) : NULL)) {
38af81ff
JH		 765 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
766 if (!PerlIO_binmode(aTHX_ IoOFP(io),IoTYPE(io),
767 mode_from_discipline(discp),
bd61b366 768 (discp) ? SvPV_nolen_const(discp) : NULL)) {
38af81ff
JH		 769 SPAGAIN;
770 RETPUSHUNDEF;
771 }
772 }
40d98b49 773 SPAGAIN;
a0d0e21e 774 RETPUSHYES;
40d98b49
JH		 775 }
776 else {
777 SPAGAIN;
a0d0e21e 778 RETPUSHUNDEF;
40d98b49 779 }
a0d0e21e
LW		 780}
781
782PP(pp_tie)
783{
27da23d5 784 dVAR; dSP; dMARK;
a0d0e21e
LW		 785 HV* stash;
786 GV *gv;
a0d0e21e 787 SV *sv;
1df70142 788 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 789 const char *methname;
14befaf4 790 int how = PERL_MAGIC_tied;
e336de0d 791 U32 items;
c4420975 792 SV *varsv = *++MARK;
a0d0e21e 793
6b05c17a
NIS		 794 switch(SvTYPE(varsv)) {
795 case SVt_PVHV:
796 methname = "TIEHASH";
bfcb3514 797 HvEITER_set((HV *)varsv, 0);
6b05c17a
NIS		 798 break;
799 case SVt_PVAV:
800 methname = "TIEARRAY";
801 break;
802 case SVt_PVGV:
7fb37951
AMS		 803#ifdef GV_UNIQUE_CHECK
804 if (GvUNIQUE((GV*)varsv)) {
805 Perl_croak(aTHX_ "Attempt to tie unique GV");
5bd07a3d
DM		 806 }
807#endif
6b05c17a 808 methname = "TIEHANDLE";
14befaf4 809 how = PERL_MAGIC_tiedscalar;
5b468f54
AMS		 810 /* For tied filehandles, we apply tiedscalar magic to the IO
811 slot of the GP rather than the GV itself. AMS 20010812 */
812 if (!GvIOp(varsv))
813 GvIOp(varsv) = newIO();
814 varsv = (SV *)GvIOp(varsv);
6b05c17a
NIS		 815 break;
816 default:
817 methname = "TIESCALAR";
14befaf4 818 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 819 break;
820 }
e336de0d
GS		 821 items = SP - MARK++;
822 if (sv_isobject(*MARK)) {
6b05c17a 823 ENTER;
e788e7d3 824 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 825 PUSHMARK(SP);
eb160463 826 EXTEND(SP,(I32)items);
e336de0d
GS		 827 while (items--)
828 PUSHs(*MARK++);
829 PUTBACK;
864dbfa3 830 call_method(methname, G_SCALAR);
301e8125 831 }
6b05c17a 832 else {
864dbfa3 833 /* Not clear why we don't call call_method here too.
6b05c17a
NIS		 834 * perhaps to get different error message ?
835 */
e336de0d 836 stash = gv_stashsv(*MARK, FALSE);
6b05c17a 837 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d
NC		 838 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
839 methname, *MARK);
6b05c17a
NIS		 840 }
841 ENTER;
e788e7d3 842 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 843 PUSHMARK(SP);
eb160463 844 EXTEND(SP,(I32)items);
e336de0d
GS		 845 while (items--)
846 PUSHs(*MARK++);
847 PUTBACK;
864dbfa3 848 call_sv((SV*)GvCV(gv), G_SCALAR);
6b05c17a 849 }
a0d0e21e
LW		 850 SPAGAIN;
851
852 sv = TOPs;
d3acc0f7 853 POPSTACK;
a0d0e21e 854 if (sv_isobject(sv)) {
33c27489 855 sv_unmagic(varsv, how);
ae21d580 856 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 857 if (varsv == SvRV(sv) &&
d87ebaca
YST		 858 (SvTYPE(varsv) == SVt_PVAV ||
859 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 860 Perl_croak(aTHX_
861 "Self-ties of arrays and hashes are not supported");
a0714e2c 862 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e
LW		 863 }
864 LEAVE;
3280af22 865 SP = PL_stack_base + markoff;
a0d0e21e
LW		 866 PUSHs(sv);
867 RETURN;
868}
869
870PP(pp_untie)
871{
27da23d5 872 dVAR; dSP;
5b468f54 873 MAGIC *mg;
33c27489 874 SV *sv = POPs;
1df70142 875 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 876 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 877
5b468f54
AMS		 878 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
879 RETPUSHYES;
880
65eba18f 881 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 882 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 883 if (obj) {
c4420975 884 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 885 CV *cv;
c4420975 886 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0
JS		 887 PUSHMARK(SP);
888 XPUSHs(SvTIED_obj((SV*)gv, mg));
889 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
890 PUTBACK;
891 ENTER;
892 call_sv((SV *)cv, G_VOID);
893 LEAVE;
894 SPAGAIN;
895 }
041457d9 896 else if (mg && SvREFCNT(obj) > 1 && ckWARN(WARN_UNTIE)) {
9014280d 897 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
fa2b88e0
JS		 898 "untie attempted while %"UVuf" inner references still exist",
899 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 900 }
cbdc8872 901 }
902 }
38193a09 903 sv_unmagic(sv, how) ;
55497cff 904 RETPUSHYES;
a0d0e21e
LW		 905}
906
c07a80fd 907PP(pp_tied)
908{
97aff369 909 dVAR;
39644a26 910 dSP;
1b6737cc 911 const MAGIC *mg;
33c27489 912 SV *sv = POPs;
1df70142 913 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 914 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54
AMS		 915
916 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
917 RETPUSHUNDEF;
c07a80fd 918
155aba94 919 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 920 SV *osv = SvTIED_obj(sv, mg);
921 if (osv == mg->mg_obj)
922 osv = sv_mortalcopy(osv);
923 PUSHs(osv);
924 RETURN;
c07a80fd 925 }
c07a80fd 926 RETPUSHUNDEF;
927}
928
a0d0e21e
LW		 929PP(pp_dbmopen)
930{
27da23d5 931 dVAR; dSP;
a0d0e21e
LW		 932 dPOPPOPssrl;
933 HV* stash;
934 GV *gv;
a0d0e21e 935
1b6737cc 936 HV * const hv = (HV*)POPs;
c4420975 937 SV * const sv = sv_mortalcopy(&PL_sv_no);
a0d0e21e 938
a0d0e21e
LW		 939 sv_setpv(sv, "AnyDBM_File");
940 stash = gv_stashsv(sv, FALSE);
8ebc5c01 941 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 942 PUTBACK;
864dbfa3 943 require_pv("AnyDBM_File.pm");
a0d0e21e 944 SPAGAIN;
8ebc5c01 945 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 946 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 947 }
948
57d3b86d 949 ENTER;
924508f0 950 PUSHMARK(SP);
6b05c17a 951
924508f0 952 EXTEND(SP, 5);
a0d0e21e
LW		 953 PUSHs(sv);
954 PUSHs(left);
955 if (SvIV(right))
b448e4fe 956 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
a0d0e21e 957 else
b448e4fe 958 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
a0d0e21e 959 PUSHs(right);
57d3b86d 960 PUTBACK;
864dbfa3 961 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 962 SPAGAIN;
963
964 if (!sv_isobject(TOPs)) {
924508f0
GS		 965 SP--;
966 PUSHMARK(SP);
a0d0e21e
LW		 967 PUSHs(sv);
968 PUSHs(left);
b448e4fe 969 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
a0d0e21e 970 PUSHs(right);
a0d0e21e 971 PUTBACK;
864dbfa3 972 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 973 SPAGAIN;
974 }
975
6b05c17a 976 if (sv_isobject(TOPs)) {
14befaf4 977 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
bd61b366 978 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 979 }
a0d0e21e
LW		 980 LEAVE;
981 RETURN;
982}
983
a0d0e21e
LW		 984PP(pp_sselect)
985{
a0d0e21e 986#ifdef HAS_SELECT
97aff369 987 dVAR; dSP; dTARGET;
a0d0e21e
LW		 988 register I32 i;
989 register I32 j;
990 register char *s;
991 register SV *sv;
65202027 992 NV value;
a0d0e21e
LW		 993 I32 maxlen = 0;
994 I32 nfound;
995 struct timeval timebuf;
996 struct timeval *tbuf = &timebuf;
997 I32 growsize;
998 char *fd_sets[4];
999#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1000 I32 masksize;
1001 I32 offset;
1002 I32 k;
1003
1004# if BYTEORDER & 0xf0000
1005# define ORDERBYTE (0x88888888 - BYTEORDER)
1006# else
1007# define ORDERBYTE (0x4444 - BYTEORDER)
1008# endif
1009
1010#endif
1011
1012 SP -= 4;
1013 for (i = 1; i <= 3; i++) {
c4420975 1014 SV * const sv = SP[i];
15547071
GA		 1015 if (!SvOK(sv))
1016 continue;
1017 if (SvREADONLY(sv)) {
729c079f
NC		 1018 if (SvIsCOW(sv))
1019 sv_force_normal_flags(sv, 0);
15547071 1020 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
729c079f
NC		 1021 DIE(aTHX_ PL_no_modify);
1022 }
4ef2275c
GA		 1023 if (!SvPOK(sv)) {
1024 if (ckWARN(WARN_MISC))
1025 Perl_warner(aTHX_ packWARN(WARN_MISC), "Non-string passed as bitmask");
1026 SvPV_force_nolen(sv); /* force string conversion */
1027 }
729c079f 1028 j = SvCUR(sv);
a0d0e21e
LW		 1029 if (maxlen < j)
1030 maxlen = j;
1031 }
1032
5ff3f7a4 1033/* little endians can use vecs directly */
e366b469 1034#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1035# ifdef NFDBITS
a0d0e21e 1036
5ff3f7a4
GS		 1037# ifndef NBBY
1038# define NBBY 8
1039# endif
a0d0e21e
LW		 1040
1041 masksize = NFDBITS / NBBY;
5ff3f7a4 1042# else
a0d0e21e 1043 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1044# endif
a0d0e21e
LW		 1045 Zero(&fd_sets[0], 4, char*);
1046#endif
1047
ad517f75
MHM		 1048# if SELECT_MIN_BITS == 1
1049 growsize = sizeof(fd_set);
1050# else
1051# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1052# undef SELECT_MIN_BITS
1053# define SELECT_MIN_BITS __FD_SETSIZE
1054# endif
e366b469
PG		 1055 /* If SELECT_MIN_BITS is greater than one we most probably will want
1056 * to align the sizes with SELECT_MIN_BITS/8 because for example
1057 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1058 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1059 * on (sets/tests/clears bits) is 32 bits. */
1060 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG		 1061# endif
1062
a0d0e21e
LW		 1063 sv = SP[4];
1064 if (SvOK(sv)) {
1065 value = SvNV(sv);
1066 if (value < 0.0)
1067 value = 0.0;
1068 timebuf.tv_sec = (long)value;
65202027 1069 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1070 timebuf.tv_usec = (long)(value * 1000000.0);
1071 }
1072 else
4608196e 1073 tbuf = NULL;
a0d0e21e
LW		 1074
1075 for (i = 1; i <= 3; i++) {
1076 sv = SP[i];
15547071 1077 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW		 1078 fd_sets[i] = 0;
1079 continue;
1080 }
4ef2275c 1081 assert(SvPOK(sv));
a0d0e21e
LW		 1082 j = SvLEN(sv);
1083 if (j < growsize) {
1084 Sv_Grow(sv, growsize);
a0d0e21e 1085 }
c07a80fd 1086 j = SvCUR(sv);
1087 s = SvPVX(sv) + j;
1088 while (++j <= growsize) {
1089 *s++ = '\0';
1090 }
1091
a0d0e21e
LW		 1092#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1093 s = SvPVX(sv);
a02a5408 1094 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW		 1095 for (offset = 0; offset < growsize; offset += masksize) {
1096 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1097 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1098 }
1099#else
1100 fd_sets[i] = SvPVX(sv);
1101#endif
1102 }
1103
dc4c69d9
JH		 1104#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1105 /* Can't make just the (void*) conditional because that would be
1106 * cpp #if within cpp macro, and not all compilers like that. */
1107 nfound = PerlSock_select(
1108 maxlen * 8,
1109 (Select_fd_set_t) fd_sets[1],
1110 (Select_fd_set_t) fd_sets[2],
1111 (Select_fd_set_t) fd_sets[3],
1112 (void*) tbuf); /* Workaround for compiler bug. */
1113#else
6ad3d225 1114 nfound = PerlSock_select(
a0d0e21e
LW		 1115 maxlen * 8,
1116 (Select_fd_set_t) fd_sets[1],
1117 (Select_fd_set_t) fd_sets[2],
1118 (Select_fd_set_t) fd_sets[3],
1119 tbuf);
dc4c69d9 1120#endif
a0d0e21e
LW		 1121 for (i = 1; i <= 3; i++) {
1122 if (fd_sets[i]) {
1123 sv = SP[i];
1124#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1125 s = SvPVX(sv);
1126 for (offset = 0; offset < growsize; offset += masksize) {
1127 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1128 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1129 }
1130 Safefree(fd_sets[i]);
1131#endif
1132 SvSETMAGIC(sv);
1133 }
1134 }
1135
4189264e 1136 PUSHi(nfound);
a0d0e21e 1137 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1138 value = (NV)(timebuf.tv_sec) +
1139 (NV)(timebuf.tv_usec) / 1000000.0;
3280af22 1140 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 1141 sv_setnv(sv, value);
1142 }
1143 RETURN;
1144#else
cea2e8a9 1145 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1146#endif
1147}
1148
4633a7c4 1149void
864dbfa3 1150Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1151{
97aff369 1152 dVAR;
b37c2d43 1153 SvREFCNT_inc_simple_void(gv);
3280af22
NIS		 1154 if (PL_defoutgv)
1155 SvREFCNT_dec(PL_defoutgv);
1156 PL_defoutgv = gv;
4633a7c4
LW		 1157}
1158
a0d0e21e
LW		 1159PP(pp_select)
1160{
97aff369 1161 dVAR; dSP; dTARGET;
4633a7c4 1162 HV *hv;
1df70142 1163 GV * const newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
7452cf6a 1164 GV * egv = GvEGV(PL_defoutgv);
4633a7c4 1165
4633a7c4 1166 if (!egv)
3280af22 1167 egv = PL_defoutgv;
4633a7c4
LW		 1168 hv = GvSTASH(egv);
1169 if (! hv)
3280af22 1170 XPUSHs(&PL_sv_undef);
4633a7c4 1171 else {
c4420975 1172 GV * const * const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1173 if (gvp && *gvp == egv) {
bd61b366 1174 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1175 XPUSHTARG;
1176 }
1177 else {
1178 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1179 }
4633a7c4
LW		 1180 }
1181
1182 if (newdefout) {
ded8aa31
GS		 1183 if (!GvIO(newdefout))
1184 gv_IOadd(newdefout);
4633a7c4
LW		 1185 setdefout(newdefout);
1186 }
1187
a0d0e21e
LW		 1188 RETURN;
1189}
1190
1191PP(pp_getc)
1192{
27da23d5 1193 dVAR; dSP; dTARGET;
90133b69 1194 IO *io = NULL;
2ae324a7 1195 MAGIC *mg;
1b6737cc 1196 GV * const gv = (MAXARG==0) ? PL_stdingv : (GV*)POPs;
2ae324a7 1197
5b468f54
AMS		 1198 if (gv && (io = GvIO(gv))
1199 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1200 {
f54cb97a 1201 const I32 gimme = GIMME_V;
2ae324a7 1202 PUSHMARK(SP);
5b468f54 1203 XPUSHs(SvTIED_obj((SV*)io, mg));
2ae324a7 1204 PUTBACK;
1205 ENTER;
864dbfa3 1206 call_method("GETC", gimme);
2ae324a7 1207 LEAVE;
1208 SPAGAIN;
54310121 1209 if (gimme == G_SCALAR)
1210 SvSetMagicSV_nosteal(TARG, TOPs);
2ae324a7 1211 RETURN;
1212 }
90133b69 1213 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
041457d9
DM		 1214 if ((!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1215 && ckWARN2(WARN_UNOPENED,WARN_CLOSED))
90133b69 1216 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 1217 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1218 RETPUSHUNDEF;
90133b69 1219 }
bbce6d69 1220 TAINT;
c69006e4 1221 sv_setpvn(TARG, " ", 1);
9bc64814 1222 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1223 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1224 /* Find out how many bytes the char needs */
aa07b2f6 1225 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS		 1226 if (len > 1) {
1227 SvGROW(TARG,len+1);
1228 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1229 SvCUR_set(TARG,1+len);
1230 }
1231 SvUTF8_on(TARG);
1232 }
a0d0e21e
LW		 1233 PUSHTARG;
1234 RETURN;
1235}
1236
76e3520e 1237STATIC OP *
cea2e8a9 1238S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1239{
27da23d5 1240 dVAR;
c09156bb 1241 register PERL_CONTEXT *cx;
f54cb97a 1242 const I32 gimme = GIMME_V;
a0d0e21e
LW		 1243
1244 ENTER;
1245 SAVETMPS;
1246
146174a9 1247 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
a0d0e21e 1248 PUSHFORMAT(cx);
f39bc417 1249 cx->blk_sub.retop = retop;
fd617465
DM		 1250 SAVECOMPPAD();
1251 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
a0d0e21e 1252
4633a7c4 1253 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1254 return CvSTART(cv);
1255}
1256
1257PP(pp_enterwrite)
1258{
97aff369 1259 dVAR;
39644a26 1260 dSP;
a0d0e21e
LW		 1261 register GV *gv;
1262 register IO *io;
1263 GV *fgv;
1264 CV *cv;
1265
1266 if (MAXARG == 0)
3280af22 1267 gv = PL_defoutgv;
a0d0e21e
LW		 1268 else {
1269 gv = (GV*)POPs;
1270 if (!gv)
3280af22 1271 gv = PL_defoutgv;
a0d0e21e
LW		 1272 }
1273 EXTEND(SP, 1);
1274 io = GvIO(gv);
1275 if (!io) {
1276 RETPUSHNO;
1277 }
1278 if (IoFMT_GV(io))
1279 fgv = IoFMT_GV(io);
1280 else
1281 fgv = gv;
1282
1283 cv = GvFORM(fgv);
a0d0e21e
LW		 1284 if (!cv) {
1285 if (fgv) {
1df70142 1286 SV * const tmpsv = sv_newmortal();
e62f0680 1287 const char *name;
bd61b366 1288 gv_efullname4(tmpsv, fgv, NULL, FALSE);
e62f0680 1289 name = SvPV_nolen_const(tmpsv);
1df70142
AL		 1290 if (name && *name)
1291 DIE(aTHX_ "Undefined format \"%s\" called", name);
a0d0e21e 1292 }
cea2e8a9 1293 DIE(aTHX_ "Not a format reference");
a0d0e21e 1294 }
44a8e56a 1295 if (CvCLONE(cv))
1296 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1297
44a8e56a 1298 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1299 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1300}
1301
1302PP(pp_leavewrite)
1303{
27da23d5 1304 dVAR; dSP;
1b6737cc
AL		 1305 GV * const gv = cxstack[cxstack_ix].blk_sub.gv;
1306 register IO * const io = GvIOp(gv);
1307 PerlIO * const ofp = IoOFP(io);
760ac839 1308 PerlIO *fp;
8772537c
AL		 1309 SV **newsp;
1310 I32 gimme;
c09156bb 1311 register PERL_CONTEXT *cx;
a0d0e21e 1312
760ac839 1313 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1314 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
7ef822cd
JH		 1315 if (!io || !ofp)
1316 goto forget_top;
3280af22
NIS		 1317 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1318 PL_formtarget != PL_toptarget)
a0d0e21e 1319 {
4633a7c4
LW		 1320 GV *fgv;
1321 CV *cv;
a0d0e21e
LW		 1322 if (!IoTOP_GV(io)) {
1323 GV *topgv;
a0d0e21e
LW		 1324
1325 if (!IoTOP_NAME(io)) {
1b6737cc 1326 SV *topname;
a0d0e21e
LW		 1327 if (!IoFMT_NAME(io))
1328 IoFMT_NAME(io) = savepv(GvNAME(gv));
0bd0581c 1329 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
f776e3cd 1330 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1331 if ((topgv && GvFORM(topgv)) ||
fafc274c 1332 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1333 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1334 else
89529cee 1335 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1336 }
f776e3cd 1337 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1338 if (!topgv || !GvFORM(topgv)) {
b929a54b 1339 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1340 goto forget_top;
1341 }
1342 IoTOP_GV(io) = topgv;
1343 }
748a9306
LW		 1344 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1345 I32 lines = IoLINES_LEFT(io);
504618e9 1346 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD		 1347 if (lines <= 0) /* Yow, header didn't even fit!!! */
1348 goto forget_top;
748a9306
LW		 1349 while (lines-- > 0) {
1350 s = strchr(s, '\n');
1351 if (!s)
1352 break;
1353 s++;
1354 }
1355 if (s) {
f54cb97a 1356 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1357 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1358 do_print(PL_formtarget, ofp);
1359 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1360 sv_chop(PL_formtarget, s);
1361 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1362 }
1363 }
a0d0e21e 1364 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1365 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1366 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1367 IoPAGE(io)++;
3280af22 1368 PL_formtarget = PL_toptarget;
748a9306 1369 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1370 fgv = IoTOP_GV(io);
1371 if (!fgv)
cea2e8a9 1372 DIE(aTHX_ "bad top format reference");
4633a7c4 1373 cv = GvFORM(fgv);
1df70142
AL		 1374 if (!cv) {
1375 SV * const sv = sv_newmortal();
b464bac0 1376 const char *name;
bd61b366 1377 gv_efullname4(sv, fgv, NULL, FALSE);
e62f0680 1378 name = SvPV_nolen_const(sv);
2dd78f96 1379 if (name && *name)
1df70142 1380 DIE(aTHX_ "Undefined top format \"%s\" called",name);
4633a7c4 1381 }
1df70142
AL		 1382 /* why no:
1383 else
1384 DIE(aTHX_ "Undefined top format called");
1385 ?*/
44a8e56a 1386 if (CvCLONE(cv))
1387 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
533c011a 1388 return doform(cv,gv,PL_op);
a0d0e21e
LW		 1389 }
1390
1391 forget_top:
3280af22 1392 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1393 POPFORMAT(cx);
1394 LEAVE;
1395
1396 fp = IoOFP(io);
1397 if (!fp) {
599cee73 1398 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1399 if (IoIFP(io))
1400 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1401 else if (ckWARN(WARN_CLOSED))
bc37a18f 1402 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1403 }
3280af22 1404 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1405 }
1406 else {
3280af22 1407 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1408 if (ckWARN(WARN_IO))
9014280d 1409 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1410 }
d75029d0 1411 if (!do_print(PL_formtarget, fp))
3280af22 1412 PUSHs(&PL_sv_no);
a0d0e21e 1413 else {
3280af22
NIS		 1414 FmLINES(PL_formtarget) = 0;
1415 SvCUR_set(PL_formtarget, 0);
1416 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1417 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1418 (void)PerlIO_flush(fp);
3280af22 1419 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1420 }
1421 }
9cbac4c7 1422 /* bad_ofp: */
3280af22 1423 PL_formtarget = PL_bodytarget;
a0d0e21e 1424 PUTBACK;
29033a8a
SH		 1425 PERL_UNUSED_VAR(newsp);
1426 PERL_UNUSED_VAR(gimme);
f39bc417 1427 return cx->blk_sub.retop;
a0d0e21e
LW		 1428}
1429
1430PP(pp_prtf)
1431{
27da23d5 1432 dVAR; dSP; dMARK; dORIGMARK;
a0d0e21e 1433 IO *io;
760ac839 1434 PerlIO *fp;
26db47c4 1435 SV *sv;
46fc3d4c 1436 MAGIC *mg;
a0d0e21e 1437
c4420975 1438 GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv;
46fc3d4c 1439
5b468f54
AMS		 1440 if (gv && (io = GvIO(gv))
1441 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1442 {
46fc3d4c 1443 if (MARK == ORIGMARK) {
4352c267 1444 MEXTEND(SP, 1);
46fc3d4c 1445 ++MARK;
1446 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1447 ++SP;
1448 }
1449 PUSHMARK(MARK - 1);
5b468f54 1450 *MARK = SvTIED_obj((SV*)io, mg);
46fc3d4c 1451 PUTBACK;
1452 ENTER;
864dbfa3 1453 call_method("PRINTF", G_SCALAR);
46fc3d4c 1454 LEAVE;
1455 SPAGAIN;
1456 MARK = ORIGMARK + 1;
1457 *MARK = *SP;
1458 SP = MARK;
1459 RETURN;
1460 }
1461
561b68a9 1462 sv = newSV(0);
a0d0e21e 1463 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1464 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1465 report_evil_fh(gv, io, PL_op->op_type);
93189314 1466 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1467 goto just_say_no;
1468 }
1469 else if (!(fp = IoOFP(io))) {
599cee73 1470 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1471 if (IoIFP(io))
1472 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1473 else if (ckWARN(WARN_CLOSED))
bc37a18f 1474 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1475 }
93189314 1476 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1477 goto just_say_no;
1478 }
1479 else {
1480 do_sprintf(sv, SP - MARK, MARK + 1);
1481 if (!do_print(sv, fp))
1482 goto just_say_no;
1483
1484 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1485 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1486 goto just_say_no;
1487 }
1488 SvREFCNT_dec(sv);
1489 SP = ORIGMARK;
3280af22 1490 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1491 RETURN;
1492
1493 just_say_no:
1494 SvREFCNT_dec(sv);
1495 SP = ORIGMARK;
3280af22 1496 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1497 RETURN;
1498}
1499
c07a80fd 1500PP(pp_sysopen)
1501{
97aff369 1502 dVAR;
39644a26 1503 dSP;
1df70142
AL		 1504 const int perm = (MAXARG > 3) ? POPi : 0666;
1505 const int mode = POPi;
1b6737cc
AL		 1506 SV * const sv = POPs;
1507 GV * const gv = (GV *)POPs;
1508 STRLEN len;
c07a80fd 1509
4592e6ca 1510 /* Need TIEHANDLE method ? */
1b6737cc 1511 const char * const tmps = SvPV_const(sv, len);
e62f0680 1512 /* FIXME? do_open should do const */
4608196e 1513 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1514 IoLINES(GvIOp(gv)) = 0;
3280af22 1515 PUSHs(&PL_sv_yes);
c07a80fd 1516 }
1517 else {
3280af22 1518 PUSHs(&PL_sv_undef);
c07a80fd 1519 }
1520 RETURN;
1521}
1522
a0d0e21e
LW		 1523PP(pp_sysread)
1524{
27da23d5 1525 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1526 int offset;
a0d0e21e
LW		 1527 IO *io;
1528 char *buffer;
5b54f415 1529 SSize_t length;
eb5c063a 1530 SSize_t count;
1e422769 1531 Sock_size_t bufsize;
748a9306 1532 SV *bufsv;
a0d0e21e 1533 STRLEN blen;
eb5c063a 1534 int fp_utf8;
1dd30107
NC		 1535 int buffer_utf8;
1536 SV *read_target;
eb5c063a
NIS		 1537 Size_t got = 0;
1538 Size_t wanted;
1d636c13 1539 bool charstart = FALSE;
87330c3c
JH		 1540 STRLEN charskip = 0;
1541 STRLEN skip = 0;
a0d0e21e 1542
1b6737cc 1543 GV * const gv = (GV*)*++MARK;
5b468f54 1544 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1545 && gv && (io = GvIO(gv)) )
137443ea 1546 {
1b6737cc
AL		 1547 const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1548 if (mg) {
1549 SV *sv;
1550 PUSHMARK(MARK-1);
1551 *MARK = SvTIED_obj((SV*)io, mg);
1552 ENTER;
1553 call_method("READ", G_SCALAR);
1554 LEAVE;
1555 SPAGAIN;
1556 sv = POPs;
1557 SP = ORIGMARK;
1558 PUSHs(sv);
1559 RETURN;
1560 }
2ae324a7 1561 }
1562
a0d0e21e
LW		 1563 if (!gv)
1564 goto say_undef;
748a9306 1565 bufsv = *++MARK;
ff68c719 1566 if (! SvOK(bufsv))
1567 sv_setpvn(bufsv, "", 0);
a0d0e21e 1568 length = SvIVx(*++MARK);
748a9306 1569 SETERRNO(0,0);
a0d0e21e
LW		 1570 if (MARK < SP)
1571 offset = SvIVx(*++MARK);
1572 else
1573 offset = 0;
1574 io = GvIO(gv);
b5fe5ca2
SR		 1575 if (!io || !IoIFP(io)) {
1576 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1577 report_evil_fh(gv, io, PL_op->op_type);
1578 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1579 goto say_undef;
b5fe5ca2 1580 }
0064a8a9 1581 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1582 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1583 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1584 SvUTF8_on(bufsv);
9b9d7ce8 1585 buffer_utf8 = 0;
7d59b7e4
NIS		 1586 }
1587 else {
1588 buffer = SvPV_force(bufsv, blen);
1dd30107 1589 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4
NIS		 1590 }
1591 if (length < 0)
1592 DIE(aTHX_ "Negative length");
eb5c063a 1593 wanted = length;
7d59b7e4 1594
d0965105
JH		 1595 charstart = TRUE;
1596 charskip = 0;
87330c3c 1597 skip = 0;
d0965105 1598
a0d0e21e 1599#ifdef HAS_SOCKET
533c011a 1600 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1601 char namebuf[MAXPATHLEN];
17a8c7ba 1602#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
490ab354
JH		 1603 bufsize = sizeof (struct sockaddr_in);
1604#else
46fc3d4c 1605 bufsize = sizeof namebuf;
490ab354 1606#endif
abf95952
IZ		 1607#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1608 if (bufsize >= 256)
1609 bufsize = 255;
1610#endif
eb160463 1611 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1612 /* 'offset' means 'flags' here */
eb5c063a 1613 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
46fc3d4c 1614 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1615 if (count < 0)
a0d0e21e 1616 RETPUSHUNDEF;
4107cc59
OF		 1617#ifdef EPOC
1618 /* Bogus return without padding */
1619 bufsize = sizeof (struct sockaddr_in);
1620#endif
eb5c063a 1621 SvCUR_set(bufsv, count);
748a9306
LW		 1622 *SvEND(bufsv) = '\0';
1623 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1624 if (fp_utf8)
1625 SvUTF8_on(bufsv);
748a9306 1626 SvSETMAGIC(bufsv);
aac0dd9a 1627 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1628 if (!(IoFLAGS(io) & IOf_UNTAINT))
1629 SvTAINTED_on(bufsv);
a0d0e21e 1630 SP = ORIGMARK;
46fc3d4c 1631 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1632 PUSHs(TARG);
1633 RETURN;
1634 }
1635#else
911d147d 1636 if (PL_op->op_type == OP_RECV)
cea2e8a9 1637 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1638#endif
eb5c063a
NIS		 1639 if (DO_UTF8(bufsv)) {
1640 /* offset adjust in characters not bytes */
1641 blen = sv_len_utf8(bufsv);
7d59b7e4 1642 }
bbce6d69 1643 if (offset < 0) {
eb160463 1644 if (-offset > (int)blen)
cea2e8a9 1645 DIE(aTHX_ "Offset outside string");
bbce6d69 1646 offset += blen;
1647 }
eb5c063a
NIS		 1648 if (DO_UTF8(bufsv)) {
1649 /* convert offset-as-chars to offset-as-bytes */
6960c29a
CH		 1650 if (offset >= (int)blen)
1651 offset += SvCUR(bufsv) - blen;
1652 else
1653 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS		 1654 }
1655 more_bytes:
cd52b7b2 1656 bufsize = SvCUR(bufsv);
1dd30107
NC		 1657 /* Allocating length + offset + 1 isn't perfect in the case of reading
1658 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1659 unduly.
1660 (should be 2 * length + offset + 1, or possibly something longer if
1661 PL_encoding is true) */
eb160463 1662 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
27da23d5 1663 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
cd52b7b2 1664 Zero(buffer+bufsize, offset-bufsize, char);
1665 }
eb5c063a 1666 buffer = buffer + offset;
1dd30107
NC		 1667 if (!buffer_utf8) {
1668 read_target = bufsv;
1669 } else {
1670 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1671 concatenate it to the current buffer. */
1672
1673 /* Truncate the existing buffer to the start of where we will be
1674 reading to: */
1675 SvCUR_set(bufsv, offset);
1676
1677 read_target = sv_newmortal();
862a34c6 1678 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1679 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1680 }
eb5c063a 1681
533c011a 1682 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1683#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1684 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1685 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1686 buffer, length, 0);
a7092146
GS		 1687 }
1688 else
1689#endif
1690 {
eb5c063a
NIS		 1691 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1692 buffer, length);
a7092146 1693 }
a0d0e21e
LW		 1694 }
1695 else
1696#ifdef HAS_SOCKET__bad_code_maybe
50952442 1697 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1698 char namebuf[MAXPATHLEN];
490ab354
JH		 1699#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1700 bufsize = sizeof (struct sockaddr_in);
1701#else
46fc3d4c 1702 bufsize = sizeof namebuf;
490ab354 1703#endif
eb5c063a 1704 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1705 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1706 }
1707 else
1708#endif
3b02c43c 1709 {
eb5c063a
NIS		 1710 count = PerlIO_read(IoIFP(io), buffer, length);
1711 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1712 if (count == 0 && PerlIO_error(IoIFP(io)))
1713 count = -1;
3b02c43c 1714 }
eb5c063a 1715 if (count < 0) {
a00b5bd3 1716 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
6e6ef6b2 1717 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
a0d0e21e 1718 goto say_undef;
af8c498a 1719 }
aa07b2f6 1720 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1721 *SvEND(read_target) = '\0';
1722 (void)SvPOK_only(read_target);
0064a8a9 1723 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1724 /* Look at utf8 we got back and count the characters */
1df70142 1725 const char *bend = buffer + count;
eb5c063a 1726 while (buffer < bend) {
d0965105
JH		 1727 if (charstart) {
1728 skip = UTF8SKIP(buffer);
1729 charskip = 0;
1730 }
1731 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1732 /* partial character - try for rest of it */
1733 length = skip - (bend-buffer);
aa07b2f6 1734 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1735 charstart = FALSE;
1736 charskip += count;
eb5c063a
NIS		 1737 goto more_bytes;
1738 }
1739 else {
1740 got++;
1741 buffer += skip;
d0965105
JH		 1742 charstart = TRUE;
1743 charskip = 0;
eb5c063a
NIS		 1744 }
1745 }
1746 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1747 provided amount read (count) was what was requested (length)
1748 */
1749 if (got < wanted && count == length) {
d0965105 1750 length = wanted - got;
aa07b2f6 1751 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1752 goto more_bytes;
1753 }
1754 /* return value is character count */
1755 count = got;
1756 SvUTF8_on(bufsv);
1757 }
1dd30107
NC		 1758 else if (buffer_utf8) {
1759 /* Let svcatsv upgrade the bytes we read in to utf8.
1760 The buffer is a mortal so will be freed soon. */
1761 sv_catsv_nomg(bufsv, read_target);
1762 }
748a9306 1763 SvSETMAGIC(bufsv);
aac0dd9a 1764 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1765 if (!(IoFLAGS(io) & IOf_UNTAINT))
1766 SvTAINTED_on(bufsv);
a0d0e21e 1767 SP = ORIGMARK;
eb5c063a 1768 PUSHi(count);
a0d0e21e
LW		 1769 RETURN;
1770
1771 say_undef:
1772 SP = ORIGMARK;
1773 RETPUSHUNDEF;
1774}
1775
a0d0e21e
LW		 1776PP(pp_send)
1777{
27da23d5 1778 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1779 IO *io;
748a9306 1780 SV *bufsv;
83003860 1781 const char *buffer;
64a1bc8e 1782 Size_t length = 0;
8c99d73e 1783 SSize_t retval;
a0d0e21e 1784 STRLEN blen;
1d603a67 1785 MAGIC *mg;
64a1bc8e
NC		 1786 const int op_type = PL_op->op_type;
1787
7452cf6a 1788 GV *const gv = (GV*)*++MARK;
14befaf4 1789 if (PL_op->op_type == OP_SYSWRITE
5b468f54
AMS		 1790 && gv && (io = GvIO(gv))
1791 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
14befaf4 1792 {
1d603a67 1793 SV *sv;
64a1bc8e
NC		 1794
1795 if (MARK == SP - 1) {
1796 EXTEND(SP, 1000);
1797 sv = sv_2mortal(newSViv(sv_len(*SP)));
1798 PUSHs(sv);
1799 PUTBACK;
1800 }
1d603a67 1801
64a1bc8e
NC		 1802 PUSHMARK(ORIGMARK);
1803 *(ORIGMARK+1) = SvTIED_obj((SV*)io, mg);
1d603a67 1804 ENTER;
864dbfa3 1805 call_method("WRITE", G_SCALAR);
1d603a67
GB		 1806 LEAVE;
1807 SPAGAIN;
1808 sv = POPs;
1809 SP = ORIGMARK;
1810 PUSHs(sv);
1811 RETURN;
1812 }
a0d0e21e
LW		 1813 if (!gv)
1814 goto say_undef;
64a1bc8e 1815
748a9306 1816 bufsv = *++MARK;
64a1bc8e
NC		 1817
1818 if (op_type == OP_SYSWRITE) {
1819 if (MARK >= SP) {
1820 length = (Size_t) sv_len(bufsv);
1821 } else {
8c99d73e 1822#if Size_t_size > IVSIZE
64a1bc8e 1823 length = (Size_t)SvNVx(*++MARK);
146174a9 1824#else
64a1bc8e 1825 length = (Size_t)SvIVx(*++MARK);
146174a9 1826#endif
64a1bc8e
NC		 1827 if ((SSize_t)length < 0)
1828 DIE(aTHX_ "Negative length");
1829 }
1830 }
748a9306 1831 SETERRNO(0,0);
a0d0e21e
LW		 1832 io = GvIO(gv);
1833 if (!io || !IoIFP(io)) {
8c99d73e 1834 retval = -1;
bc37a18f
RG		 1835 if (ckWARN(WARN_CLOSED))
1836 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 1837 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1838 goto say_undef;
1839 }
1840
1841 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7
NC		 1842 if (!SvUTF8(bufsv)) {
1843 bufsv = sv_2mortal(newSVsv(bufsv));
1844 buffer = sv_2pvutf8(bufsv, &blen);
1845 } else
83003860 1846 buffer = SvPV_const(bufsv, blen);
a0d0e21e 1847 }
7d59b7e4 1848 else {
4de5f5ca
JH		 1849 if (DO_UTF8(bufsv)) {
1850 /* Not modifying source SV, so making a temporary copy. */
1851 bufsv = sv_2mortal(newSVsv(bufsv));
1852 sv_utf8_downgrade(bufsv, FALSE);
1853 }
83003860 1854 buffer = SvPV_const(bufsv, blen);
7d59b7e4
NIS		 1855 }
1856
64a1bc8e 1857 if (op_type == OP_SYSWRITE) {
7d59b7e4
NIS		 1858 IV offset;
1859 if (DO_UTF8(bufsv)) {
1860 /* length and offset are in chars */
1861 blen = sv_len_utf8(bufsv);
1862 }
bbce6d69 1863 if (MARK < SP) {
a0d0e21e 1864 offset = SvIVx(*++MARK);
bbce6d69 1865 if (offset < 0) {
eb160463 1866 if (-offset > (IV)blen)
cea2e8a9 1867 DIE(aTHX_ "Offset outside string");
bbce6d69 1868 offset += blen;
eb160463 1869 } else if (offset >= (IV)blen && blen > 0)
cea2e8a9 1870 DIE(aTHX_ "Offset outside string");
bbce6d69 1871 } else
a0d0e21e
LW		 1872 offset = 0;
1873 if (length > blen - offset)
1874 length = blen - offset;
7d59b7e4 1875 if (DO_UTF8(bufsv)) {
83003860 1876 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
7d59b7e4
NIS		 1877 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1878 }
1879 else {
1880 buffer = buffer+offset;
1881 }
a7092146 1882#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1883 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1884 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1885 buffer, length, 0);
a7092146
GS		 1886 }
1887 else
1888#endif
1889 {
94e4c244 1890 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1891 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1892 buffer, length);
a7092146 1893 }
a0d0e21e
LW		 1894 }
1895#ifdef HAS_SOCKET
64a1bc8e
NC		 1896 else {
1897 const int flags = SvIVx(*++MARK);
1898 if (SP > MARK) {
1899 STRLEN mlen;
1900 char * const sockbuf = SvPVx(*++MARK, mlen);
1901 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1902 flags, (struct sockaddr *)sockbuf, mlen);
1903 }
1904 else {
1905 retval
1906 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1907 }
a0d0e21e 1908 }
a0d0e21e
LW		 1909#else
1910 else
cea2e8a9 1911 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1912#endif
8c99d73e 1913 if (retval < 0)
a0d0e21e
LW		 1914 goto say_undef;
1915 SP = ORIGMARK;
f36eea10
JH		 1916 if (DO_UTF8(bufsv))
1917 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
8c99d73e
GS		 1918#if Size_t_size > IVSIZE
1919 PUSHn(retval);
1920#else
1921 PUSHi(retval);
1922#endif
a0d0e21e
LW		 1923 RETURN;
1924
1925 say_undef:
1926 SP = ORIGMARK;
1927 RETPUSHUNDEF;
1928}
1929
a0d0e21e
LW		 1930PP(pp_eof)
1931{
27da23d5 1932 dVAR; dSP;
a0d0e21e
LW		 1933 GV *gv;
1934
32da55ab 1935 if (MAXARG == 0) {
146174a9
CB		 1936 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1937 IO *io;
ed2c6b9b 1938 gv = PL_last_in_gv = GvEGV(PL_argvgv);
146174a9
CB		 1939 io = GvIO(gv);
1940 if (io && !IoIFP(io)) {
1941 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1942 IoLINES(io) = 0;
1943 IoFLAGS(io) &= ~IOf_START;
4608196e 1944 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
146174a9
CB		 1945 sv_setpvn(GvSV(gv), "-", 1);
1946 SvSETMAGIC(GvSV(gv));
1947 }
1948 else if (!nextargv(gv))
1949 RETPUSHYES;
1950 }
1951 }
1952 else
1953 gv = PL_last_in_gv; /* eof */
1954 }
a0d0e21e 1955 else
146174a9 1956 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 1957
6136c704
AL		 1958 if (gv) {
1959 IO * const io = GvIO(gv);
1960 MAGIC * mg;
1961 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
1962 PUSHMARK(SP);
1963 XPUSHs(SvTIED_obj((SV*)io, mg));
1964 PUTBACK;
1965 ENTER;
1966 call_method("EOF", G_SCALAR);
1967 LEAVE;
1968 SPAGAIN;
1969 RETURN;
1970 }
4592e6ca
NIS		 1971 }
1972
54310121 1973 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 1974 RETURN;
1975}
1976
1977PP(pp_tell)
1978{
27da23d5 1979 dVAR; dSP; dTARGET;
301e8125 1980 GV *gv;
5b468f54 1981 IO *io;
4592e6ca 1982 MAGIC *mg;
a0d0e21e 1983
c4420975
AL		 1984 if (MAXARG != 0)
1985 PL_last_in_gv = (GV*)POPs;
1986 gv = PL_last_in_gv;
4592e6ca 1987
5b468f54
AMS		 1988 if (gv && (io = GvIO(gv))
1989 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1990 {
4592e6ca 1991 PUSHMARK(SP);
5b468f54 1992 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 1993 PUTBACK;
1994 ENTER;
864dbfa3 1995 call_method("TELL", G_SCALAR);
4592e6ca
NIS		 1996 LEAVE;
1997 SPAGAIN;
1998 RETURN;
1999 }
2000
146174a9
CB		 2001#if LSEEKSIZE > IVSIZE
2002 PUSHn( do_tell(gv) );
2003#else
a0d0e21e 2004 PUSHi( do_tell(gv) );
146174a9 2005#endif
a0d0e21e
LW		 2006 RETURN;
2007}
2008
137443ea 2009PP(pp_sysseek)
2010{
27da23d5 2011 dVAR; dSP;
5b468f54 2012 IO *io;
1df70142 2013 const int whence = POPi;
146174a9 2014#if LSEEKSIZE > IVSIZE
7452cf6a 2015 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2016#else
7452cf6a 2017 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2018#endif
4592e6ca 2019 MAGIC *mg;
a0d0e21e 2020
7452cf6a 2021 GV * const gv = PL_last_in_gv = (GV*)POPs;
4592e6ca 2022
5b468f54
AMS		 2023 if (gv && (io = GvIO(gv))
2024 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
2025 {
4592e6ca 2026 PUSHMARK(SP);
5b468f54 2027 XPUSHs(SvTIED_obj((SV*)io, mg));
cb50131a
CB		 2028#if LSEEKSIZE > IVSIZE
2029 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
2030#else
b448e4fe 2031 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 2032#endif
b448e4fe 2033 XPUSHs(sv_2mortal(newSViv(whence)));
4592e6ca
NIS		 2034 PUTBACK;
2035 ENTER;
864dbfa3 2036 call_method("SEEK", G_SCALAR);
4592e6ca
NIS		 2037 LEAVE;
2038 SPAGAIN;
2039 RETURN;
2040 }
2041
533c011a 2042 if (PL_op->op_type == OP_SEEK)
8903cb82 2043 PUSHs(boolSV(do_seek(gv, offset, whence)));
2044 else {
0bcc34c2 2045 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2046 if (sought < 0)
146174a9
CB		 2047 PUSHs(&PL_sv_undef);
2048 else {
7452cf6a 2049 SV* const sv = sought ?
146174a9 2050#if LSEEKSIZE > IVSIZE
b448e4fe 2051 newSVnv((NV)sought)
146174a9 2052#else
b448e4fe 2053 newSViv(sought)
146174a9
CB		 2054#endif
2055 : newSVpvn(zero_but_true, ZBTLEN);
2056 PUSHs(sv_2mortal(sv));
2057 }
8903cb82 2058 }
a0d0e21e
LW		 2059 RETURN;
2060}
2061
2062PP(pp_truncate)
2063{
97aff369 2064 dVAR;
39644a26 2065 dSP;
8c99d73e
GS		 2066 /* There seems to be no consensus on the length type of truncate()
2067 * and ftruncate(), both off_t and size_t have supporters. In
2068 * general one would think that when using large files, off_t is
2069 * at least as wide as size_t, so using an off_t should be okay. */
2070 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2071 Off_t len;
a0d0e21e 2072
25342a55 2073#if Off_t_size > IVSIZE
0bcc34c2 2074 len = (Off_t)POPn;
8c99d73e 2075#else
0bcc34c2 2076 len = (Off_t)POPi;
8c99d73e
GS		 2077#endif
2078 /* Checking for length < 0 is problematic as the type might or
301e8125 2079 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2080 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2081 SETERRNO(0,0);
d05c1ba0 2082 {
d05c1ba0
JH		 2083 int result = 1;
2084 GV *tmpgv;
090bf15b
SR		 2085 IO *io;
2086
d05c1ba0 2087 if (PL_op->op_flags & OPf_SPECIAL) {
f776e3cd 2088 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
d05c1ba0 2089
090bf15b
SR		 2090 do_ftruncate_gv:
2091 if (!GvIO(tmpgv))
2092 result = 0;
d05c1ba0 2093 else {
090bf15b
SR		 2094 PerlIO *fp;
2095 io = GvIOp(tmpgv);
2096 do_ftruncate_io:
2097 TAINT_PROPER("truncate");
2098 if (!(fp = IoIFP(io))) {
2099 result = 0;
2100 }
2101 else {
2102 PerlIO_flush(fp);
cbdc8872 2103#ifdef HAS_TRUNCATE
090bf15b 2104 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2105#else
090bf15b 2106 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2107#endif
090bf15b
SR		 2108 result = 0;
2109 }
d05c1ba0 2110 }
cbdc8872 2111 }
d05c1ba0 2112 else {
7452cf6a 2113 SV * const sv = POPs;
83003860 2114 const char *name;
7a5fd60d 2115
d05c1ba0
JH		 2116 if (SvTYPE(sv) == SVt_PVGV) {
2117 tmpgv = (GV*)sv; /* *main::FRED for example */
090bf15b 2118 goto do_ftruncate_gv;
d05c1ba0
JH		 2119 }
2120 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2121 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
090bf15b
SR		 2122 goto do_ftruncate_gv;
2123 }
2124 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2125 io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
2126 goto do_ftruncate_io;
d05c1ba0 2127 }
1e422769 2128
83003860 2129 name = SvPV_nolen_const(sv);
d05c1ba0 2130 TAINT_PROPER("truncate");
cbdc8872 2131#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2132 if (truncate(name, len) < 0)
2133 result = 0;
cbdc8872 2134#else
d05c1ba0 2135 {
7452cf6a 2136 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2137
7452cf6a 2138 if (tmpfd < 0)
cbdc8872 2139 result = 0;
d05c1ba0
JH		 2140 else {
2141 if (my_chsize(tmpfd, len) < 0)
2142 result = 0;
2143 PerlLIO_close(tmpfd);
2144 }
cbdc8872 2145 }
a0d0e21e 2146#endif
d05c1ba0 2147 }
a0d0e21e 2148
d05c1ba0
JH		 2149 if (result)
2150 RETPUSHYES;
2151 if (!errno)
93189314 2152 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2153 RETPUSHUNDEF;
2154 }
a0d0e21e
LW		 2155}
2156
a0d0e21e
LW		 2157PP(pp_ioctl)
2158{
97aff369 2159 dVAR; dSP; dTARGET;
7452cf6a 2160 SV * const argsv = POPs;
1df70142 2161 const unsigned int func = POPu;
e1ec3a88 2162 const int optype = PL_op->op_type;
7452cf6a 2163 GV * const gv = (GV*)POPs;
4608196e 2164 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2165 char *s;
324aa91a 2166 IV retval;
a0d0e21e 2167
748a9306 2168 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2169 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2170 report_evil_fh(gv, io, PL_op->op_type);
93189314 2171 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2172 RETPUSHUNDEF;
2173 }
2174
748a9306 2175 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2176 STRLEN len;
324aa91a 2177 STRLEN need;
748a9306 2178 s = SvPV_force(argsv, len);
324aa91a
HF		 2179 need = IOCPARM_LEN(func);
2180 if (len < need) {
2181 s = Sv_Grow(argsv, need + 1);
2182 SvCUR_set(argsv, need);
a0d0e21e
LW		 2183 }
2184
748a9306 2185 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2186 }
2187 else {
748a9306 2188 retval = SvIV(argsv);
c529f79d 2189 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2190 }
2191
ed4b2e6b 2192 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2193
2194 if (optype == OP_IOCTL)
2195#ifdef HAS_IOCTL
76e3520e 2196 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2197#else
cea2e8a9 2198 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2199#endif
2200 else
c214f4ad
WB		 2201#ifndef HAS_FCNTL
2202 DIE(aTHX_ "fcntl is not implemented");
2203#else
55497cff 2204#if defined(OS2) && defined(__EMX__)
760ac839 2205 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2206#else
760ac839 2207 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2208#endif
6652bd42 2209#endif
a0d0e21e 2210
6652bd42 2211#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2212 if (SvPOK(argsv)) {
2213 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2214 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2215 OP_NAME(PL_op));
748a9306
LW		 2216 s[SvCUR(argsv)] = 0; /* put our null back */
2217 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2218 }
2219
2220 if (retval == -1)
2221 RETPUSHUNDEF;
2222 if (retval != 0) {
2223 PUSHi(retval);
2224 }
2225 else {
8903cb82 2226 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2227 }
4808266b 2228#endif
c214f4ad 2229 RETURN;
a0d0e21e
LW		 2230}
2231
2232PP(pp_flock)
2233{
9cad6237 2234#ifdef FLOCK
97aff369 2235 dVAR; dSP; dTARGET;
a0d0e21e 2236 I32 value;
bc37a18f 2237 IO *io = NULL;
760ac839 2238 PerlIO *fp;
7452cf6a
AL		 2239 const int argtype = POPi;
2240 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
16d20bd9 2241
bc37a18f
RG		 2242 if (gv && (io = GvIO(gv)))
2243 fp = IoIFP(io);
2244 else {
4608196e 2245 fp = NULL;
bc37a18f
RG		 2246 io = NULL;
2247 }
0bcc34c2 2248 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2249 if (fp) {
68dc0745 2250 (void)PerlIO_flush(fp);
76e3520e 2251 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2252 }
cb50131a 2253 else {
bc37a18f
RG		 2254 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2255 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2256 value = 0;
93189314 2257 SETERRNO(EBADF,RMS_IFI);
cb50131a 2258 }
a0d0e21e
LW		 2259 PUSHi(value);
2260 RETURN;
2261#else
cea2e8a9 2262 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2263#endif
2264}
2265
2266/* Sockets. */
2267
2268PP(pp_socket)
2269{
a0d0e21e 2270#ifdef HAS_SOCKET
97aff369 2271 dVAR; dSP;
7452cf6a
AL		 2272 const int protocol = POPi;
2273 const int type = POPi;
2274 const int domain = POPi;
2275 GV * const gv = (GV*)POPs;
2276 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e
LW		 2277 int fd;
2278
c289d2f7
JH		 2279 if (!gv || !io) {
2280 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2281 report_evil_fh(gv, io, PL_op->op_type);
2282 if (IoIFP(io))
2283 do_close(gv, FALSE);
93189314 2284 SETERRNO(EBADF,LIB_INVARG);
a0d0e21e
LW		 2285 RETPUSHUNDEF;
2286 }
2287
57171420
BS		 2288 if (IoIFP(io))
2289 do_close(gv, FALSE);
2290
a0d0e21e 2291 TAINT_PROPER("socket");
6ad3d225 2292 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2293 if (fd < 0)
2294 RETPUSHUNDEF;
460c8493
IZ		 2295 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2296 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2297 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2298 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2299 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2300 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2301 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2302 RETPUSHUNDEF;
2303 }
8d2a6795
GS		 2304#if defined(HAS_FCNTL) && defined(F_SETFD)
2305 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2306#endif
a0d0e21e 2307
d5ff79b3
OF		 2308#ifdef EPOC
2309 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2310#endif
2311
a0d0e21e
LW		 2312 RETPUSHYES;
2313#else
cea2e8a9 2314 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2315#endif
2316}
2317
2318PP(pp_sockpair)
2319{
c95c94b1 2320#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2321 dVAR; dSP;
7452cf6a
AL		 2322 const int protocol = POPi;
2323 const int type = POPi;
2324 const int domain = POPi;
2325 GV * const gv2 = (GV*)POPs;
2326 GV * const gv1 = (GV*)POPs;
2327 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2328 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
a0d0e21e
LW		 2329 int fd[2];
2330
c289d2f7
JH		 2331 if (!gv1 || !gv2 || !io1 || !io2) {
2332 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2333 if (!gv1 || !io1)
2334 report_evil_fh(gv1, io1, PL_op->op_type);
2335 if (!gv2 || !io2)
2336 report_evil_fh(gv1, io2, PL_op->op_type);
2337 }
2338 if (IoIFP(io1))
2339 do_close(gv1, FALSE);
2340 if (IoIFP(io2))
2341 do_close(gv2, FALSE);
a0d0e21e 2342 RETPUSHUNDEF;
c289d2f7 2343 }
a0d0e21e 2344
dc0d0a5f
JH		 2345 if (IoIFP(io1))
2346 do_close(gv1, FALSE);
2347 if (IoIFP(io2))
2348 do_close(gv2, FALSE);
57171420 2349
a0d0e21e 2350 TAINT_PROPER("socketpair");
6ad3d225 2351 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2352 RETPUSHUNDEF;
460c8493
IZ		 2353 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2354 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2355 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ		 2356 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2357 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2358 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2359 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2360 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2361 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2362 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2363 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2364 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2365 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2366 RETPUSHUNDEF;
2367 }
8d2a6795
GS		 2368#if defined(HAS_FCNTL) && defined(F_SETFD)
2369 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2370 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2371#endif
a0d0e21e
LW		 2372
2373 RETPUSHYES;
2374#else
cea2e8a9 2375 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2376#endif
2377}
2378
2379PP(pp_bind)
2380{
a0d0e21e 2381#ifdef HAS_SOCKET
97aff369 2382 dVAR; dSP;
7452cf6a 2383 SV * const addrsv = POPs;
349d4f2f
NC		 2384 /* OK, so on what platform does bind modify addr? */
2385 const char *addr;
7452cf6a
AL		 2386 GV * const gv = (GV*)POPs;
2387 register IO * const io = GvIOn(gv);
a0d0e21e 2388 STRLEN len;
eec2d3df 2389 int bind_ok = 0;
a0d0e21e
LW		 2390
2391 if (!io || !IoIFP(io))
2392 goto nuts;
2393
349d4f2f 2394 addr = SvPV_const(addrsv, len);
a0d0e21e 2395 TAINT_PROPER("bind");
eec2d3df
GS		 2396 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2397 (struct sockaddr *)addr, len) >= 0)
2398 bind_ok = 1;
2399
eec2d3df
GS		 2400
2401 if (bind_ok)
a0d0e21e
LW		 2402 RETPUSHYES;
2403 else
2404 RETPUSHUNDEF;
2405
2406nuts:
599cee73 2407 if (ckWARN(WARN_CLOSED))
bc37a18f 2408 report_evil_fh(gv, io, PL_op->op_type);
93189314 2409 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2410 RETPUSHUNDEF;
2411#else
cea2e8a9 2412 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2413#endif
2414}
2415
2416PP(pp_connect)
2417{
a0d0e21e 2418#ifdef HAS_SOCKET
97aff369 2419 dVAR; dSP;
7452cf6a
AL		 2420 SV * const addrsv = POPs;
2421 GV * const gv = (GV*)POPs;
2422 register IO * const io = GvIOn(gv);
349d4f2f 2423 const char *addr;
a0d0e21e
LW		 2424 STRLEN len;
2425
2426 if (!io || !IoIFP(io))
2427 goto nuts;
2428
349d4f2f 2429 addr = SvPV_const(addrsv, len);
a0d0e21e 2430 TAINT_PROPER("connect");
6ad3d225 2431 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2432 RETPUSHYES;
2433 else
2434 RETPUSHUNDEF;
2435
2436nuts:
599cee73 2437 if (ckWARN(WARN_CLOSED))
bc37a18f 2438 report_evil_fh(gv, io, PL_op->op_type);
93189314 2439 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2440 RETPUSHUNDEF;
2441#else
cea2e8a9 2442 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2443#endif
2444}
2445
2446PP(pp_listen)
2447{
a0d0e21e 2448#ifdef HAS_SOCKET
97aff369 2449 dVAR; dSP;
7452cf6a
AL		 2450 const int backlog = POPi;
2451 GV * const gv = (GV*)POPs;
2452 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2453
c289d2f7 2454 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2455 goto nuts;
2456
6ad3d225 2457 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2458 RETPUSHYES;
2459 else
2460 RETPUSHUNDEF;
2461
2462nuts:
599cee73 2463 if (ckWARN(WARN_CLOSED))
bc37a18f 2464 report_evil_fh(gv, io, PL_op->op_type);
93189314 2465 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2466 RETPUSHUNDEF;
2467#else
cea2e8a9 2468 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2469#endif
2470}
2471
2472PP(pp_accept)
2473{
a0d0e21e 2474#ifdef HAS_SOCKET
97aff369 2475 dVAR; dSP; dTARGET;
a0d0e21e
LW		 2476 register IO *nstio;
2477 register IO *gstio;
93d47a36
JH		 2478 char namebuf[MAXPATHLEN];
2479#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2480 Sock_size_t len = sizeof (struct sockaddr_in);
2481#else
2482 Sock_size_t len = sizeof namebuf;
2483#endif
7452cf6a
AL		 2484 GV * const ggv = (GV*)POPs;
2485 GV * const ngv = (GV*)POPs;
a0d0e21e
LW		 2486 int fd;
2487
a0d0e21e
LW		 2488 if (!ngv)
2489 goto badexit;
2490 if (!ggv)
2491 goto nuts;
2492
2493 gstio = GvIO(ggv);
2494 if (!gstio || !IoIFP(gstio))
2495 goto nuts;
2496
2497 nstio = GvIOn(ngv);
93d47a36 2498 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
a0d0e21e
LW		 2499 if (fd < 0)
2500 goto badexit;
a70048fb
AB		 2501 if (IoIFP(nstio))
2502 do_close(ngv, FALSE);
460c8493
IZ		 2503 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2504 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2505 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2506 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2507 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2508 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2509 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2510 goto badexit;
2511 }
8d2a6795
GS		 2512#if defined(HAS_FCNTL) && defined(F_SETFD)
2513 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2514#endif
a0d0e21e 2515
ed79a026 2516#ifdef EPOC
93d47a36 2517 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
a9f1f6b0 2518 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026 2519#endif
381c1bae 2520#ifdef __SCO_VERSION__
93d47a36 2521 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2522#endif
ed79a026 2523
93d47a36 2524 PUSHp(namebuf, len);
a0d0e21e
LW		 2525 RETURN;
2526
2527nuts:
599cee73 2528 if (ckWARN(WARN_CLOSED))
bc37a18f 2529 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
93189314 2530 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2531
2532badexit:
2533 RETPUSHUNDEF;
2534
2535#else
cea2e8a9 2536 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2537#endif
2538}
2539
2540PP(pp_shutdown)
2541{
a0d0e21e 2542#ifdef HAS_SOCKET
97aff369 2543 dVAR; dSP; dTARGET;
7452cf6a
AL		 2544 const int how = POPi;
2545 GV * const gv = (GV*)POPs;
2546 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 2547
2548 if (!io || !IoIFP(io))
2549 goto nuts;
2550
6ad3d225 2551 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2552 RETURN;
2553
2554nuts:
599cee73 2555 if (ckWARN(WARN_CLOSED))
bc37a18f 2556 report_evil_fh(gv, io, PL_op->op_type);
93189314 2557 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2558 RETPUSHUNDEF;
2559#else
cea2e8a9 2560 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2561#endif
2562}
2563
a0d0e21e
LW		 2564PP(pp_ssockopt)
2565{
a0d0e21e 2566#ifdef HAS_SOCKET
97aff369 2567 dVAR; dSP;
7452cf6a 2568 const int optype = PL_op->op_type;
561b68a9 2569 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2570 const unsigned int optname = (unsigned int) POPi;
2571 const unsigned int lvl = (unsigned int) POPi;
2572 GV * const gv = (GV*)POPs;
2573 register IO * const io = GvIOn(gv);
a0d0e21e 2574 int fd;
1e422769 2575 Sock_size_t len;
a0d0e21e 2576
a0d0e21e
LW		 2577 if (!io || !IoIFP(io))
2578 goto nuts;
2579
760ac839 2580 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2581 switch (optype) {
2582 case OP_GSOCKOPT:
748a9306 2583 SvGROW(sv, 257);
a0d0e21e 2584 (void)SvPOK_only(sv);
748a9306
LW		 2585 SvCUR_set(sv,256);
2586 *SvEND(sv) ='\0';
1e422769 2587 len = SvCUR(sv);
6ad3d225 2588 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2589 goto nuts2;
1e422769 2590 SvCUR_set(sv, len);
748a9306 2591 *SvEND(sv) ='\0';
a0d0e21e
LW		 2592 PUSHs(sv);
2593 break;
2594 case OP_SSOCKOPT: {
1215b447
JH		 2595#if defined(__SYMBIAN32__)
2596# define SETSOCKOPT_OPTION_VALUE_T void *
2597#else
2598# define SETSOCKOPT_OPTION_VALUE_T const char *
2599#endif
2600 /* XXX TODO: We need to have a proper type (a Configure probe,
2601 * etc.) for what the C headers think of the third argument of
2602 * setsockopt(), the option_value read-only buffer: is it
2603 * a "char *", or a "void *", const or not. Some compilers
2604 * don't take kindly to e.g. assuming that "char *" implicitly
2605 * promotes to a "void *", or to explicitly promoting/demoting
2606 * consts to non/vice versa. The "const void *" is the SUS
2607 * definition, but that does not fly everywhere for the above
2608 * reasons. */
2609 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769 2610 int aint;
2611 if (SvPOKp(sv)) {
2d8e6c8d 2612 STRLEN l;
1215b447 2613 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2614 len = l;
1e422769 2615 }
56ee1660 2616 else {
a0d0e21e 2617 aint = (int)SvIV(sv);
1215b447 2618 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2619 len = sizeof(int);
2620 }
6ad3d225 2621 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2622 goto nuts2;
3280af22 2623 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2624 }
2625 break;
2626 }
2627 RETURN;
2628
2629nuts:
599cee73 2630 if (ckWARN(WARN_CLOSED))
bc37a18f 2631 report_evil_fh(gv, io, optype);
93189314 2632 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2633nuts2:
2634 RETPUSHUNDEF;
2635
2636#else
af51a00e 2637 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2638#endif
2639}
2640
a0d0e21e
LW		 2641PP(pp_getpeername)
2642{
a0d0e21e 2643#ifdef HAS_SOCKET
97aff369 2644 dVAR; dSP;
7452cf6a
AL		 2645 const int optype = PL_op->op_type;
2646 GV * const gv = (GV*)POPs;
2647 register IO * const io = GvIOn(gv);
2648 Sock_size_t len;
a0d0e21e
LW		 2649 SV *sv;
2650 int fd;
a0d0e21e
LW		 2651
2652 if (!io || !IoIFP(io))
2653 goto nuts;
2654
561b68a9 2655 sv = sv_2mortal(newSV(257));
748a9306 2656 (void)SvPOK_only(sv);
1e422769 2657 len = 256;
2658 SvCUR_set(sv, len);
748a9306 2659 *SvEND(sv) ='\0';
760ac839 2660 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2661 switch (optype) {
2662 case OP_GETSOCKNAME:
6ad3d225 2663 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2664 goto nuts2;
2665 break;
2666 case OP_GETPEERNAME:
6ad3d225 2667 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2668 goto nuts2;
490ab354
JH		 2669#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2670 {
2671 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";
2672 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2673 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2674 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2675 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2676 goto nuts2;
490ab354
JH		 2677 }
2678 }
2679#endif
a0d0e21e
LW		 2680 break;
2681 }
13826f2c
CS		 2682#ifdef BOGUS_GETNAME_RETURN
2683 /* Interactive Unix, getpeername() and getsockname()
2684 does not return valid namelen */
1e422769 2685 if (len == BOGUS_GETNAME_RETURN)
2686 len = sizeof(struct sockaddr);
13826f2c 2687#endif
1e422769 2688 SvCUR_set(sv, len);
748a9306 2689 *SvEND(sv) ='\0';
a0d0e21e
LW		 2690 PUSHs(sv);
2691 RETURN;
2692
2693nuts:
599cee73 2694 if (ckWARN(WARN_CLOSED))
bc37a18f 2695 report_evil_fh(gv, io, optype);
93189314 2696 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2697nuts2:
2698 RETPUSHUNDEF;
2699
2700#else
af51a00e 2701 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2702#endif
2703}
2704
2705/* Stat calls. */
2706
a0d0e21e
LW		 2707PP(pp_stat)
2708{
97aff369 2709 dVAR;
39644a26 2710 dSP;
2dd78f96 2711 GV *gv;
54310121 2712 I32 gimme;
a0d0e21e
LW		 2713 I32 max = 13;
2714
533c011a 2715 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2716 gv = cGVOP_gv;
8a4e5b40 2717 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2718 if (gv != PL_defgv) {
5d329e6e 2719 do_fstat_warning_check:
5d3e98de 2720 if (ckWARN(WARN_IO))
9014280d 2721 Perl_warner(aTHX_ packWARN(WARN_IO),
5d3e98de
RGS		 2722 "lstat() on filehandle %s", GvENAME(gv));
2723 } else if (PL_laststype != OP_LSTAT)
8a4e5b40 2724 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2725 }
2726
748a9306 2727 do_fstat:
2dd78f96 2728 if (gv != PL_defgv) {
3280af22 2729 PL_laststype = OP_STAT;
2dd78f96 2730 PL_statgv = gv;
c69006e4 2731 sv_setpvn(PL_statname, "", 0);
2dd78f96
JH		 2732 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2733 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
a0d0e21e 2734 }
9ddeeac9 2735 if (PL_laststatval < 0) {
2dd78f96
JH		 2736 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2737 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2738 max = 0;
9ddeeac9 2739 }
a0d0e21e
LW		 2740 }
2741 else {
7452cf6a 2742 SV* const sv = POPs;
748a9306 2743 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2744 gv = (GV*)sv;
748a9306
LW		 2745 goto do_fstat;
2746 }
2747 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 2748 gv = (GV*)SvRV(sv);
5d329e6e
NC		 2749 if (PL_op->op_type == OP_LSTAT)
2750 goto do_fstat_warning_check;
748a9306
LW		 2751 goto do_fstat;
2752 }
0510663f 2753 sv_setpv(PL_statname, SvPV_nolen_const(sv));
a0714e2c 2754 PL_statgv = NULL;
533c011a
NIS		 2755 PL_laststype = PL_op->op_type;
2756 if (PL_op->op_type == OP_LSTAT)
0510663f 2757 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2758 else
0510663f 2759 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2760 if (PL_laststatval < 0) {
0510663f 2761 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
9014280d 2762 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW		 2763 max = 0;
2764 }
2765 }
2766
54310121 2767 gimme = GIMME_V;
2768 if (gimme != G_ARRAY) {
2769 if (gimme != G_VOID)
2770 XPUSHs(boolSV(max));
2771 RETURN;
a0d0e21e
LW		 2772 }
2773 if (max) {
36477c24 2774 EXTEND(SP, max);
2775 EXTEND_MORTAL(max);
1ff81528
PL		 2776 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2777 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2778 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2779 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2780#if Uid_t_size > IVSIZE
2781 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2782#else
23dcd6c8 2783# if Uid_t_sign <= 0
1ff81528 2784 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2785# else
2786 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2787# endif
146174a9 2788#endif
301e8125 2789#if Gid_t_size > IVSIZE
146174a9
CB		 2790 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2791#else
23dcd6c8 2792# if Gid_t_sign <= 0
1ff81528 2793 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2794# else
2795 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2796# endif
146174a9 2797#endif
cbdc8872 2798#ifdef USE_STAT_RDEV
1ff81528 2799 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2800#else
396482e1 2801 PUSHs(sv_2mortal(newSVpvs("")));
cbdc8872 2802#endif
146174a9 2803#if Off_t_size > IVSIZE
4a9d6100 2804 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
146174a9 2805#else
1ff81528 2806 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2807#endif
cbdc8872 2808#ifdef BIG_TIME
172ae379
JH		 2809 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2810 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2811 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2812#else
1ff81528
PL		 2813 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2814 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2815 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
cbdc8872 2816#endif
a0d0e21e 2817#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2818 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2819 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2820#else
396482e1
GA		 2821 PUSHs(sv_2mortal(newSVpvs("")));
2822 PUSHs(sv_2mortal(newSVpvs("")));
a0d0e21e
LW		 2823#endif
2824 }
2825 RETURN;
2826}
2827
fbb0b3b3
RGS		 2828/* This macro is used by the stacked filetest operators :
2829 * if the previous filetest failed, short-circuit and pass its value.
2830 * Else, discard it from the stack and continue. --rgs
2831 */
2832#define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2833 if (TOPs == &PL_sv_no || TOPs == &PL_sv_undef) { RETURN; } \
2834 else { (void)POPs; PUTBACK; } \
2835 }
2836
a0d0e21e
LW		 2837PP(pp_ftrread)
2838{
97aff369 2839 dVAR;
9cad6237 2840 I32 result;
af9e49b4
NC		 2841 /* Not const, because things tweak this below. Not bool, because there's
2842 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2843#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2844 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2845 /* Giving some sort of initial value silences compilers. */
2846# ifdef R_OK
2847 int access_mode = R_OK;
2848# else
2849 int access_mode = 0;
2850# endif
5ff3f7a4 2851#else
af9e49b4
NC		 2852 /* access_mode is never used, but leaving use_access in makes the
2853 conditional compiling below much clearer. */
2854 I32 use_access = 0;
5ff3f7a4 2855#endif
af9e49b4 2856 int stat_mode = S_IRUSR;
a0d0e21e 2857
af9e49b4 2858 bool effective = FALSE;
2a3ff820 2859 dSP;
af9e49b4 2860
fbb0b3b3 2861 STACKED_FTEST_CHECK;
af9e49b4
NC		 2862
2863 switch (PL_op->op_type) {
2864 case OP_FTRREAD:
2865#if !(defined(HAS_ACCESS) && defined(R_OK))
2866 use_access = 0;
2867#endif
2868 break;
2869
2870 case OP_FTRWRITE:
5ff3f7a4 2871#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 2872 access_mode = W_OK;
5ff3f7a4 2873#else
af9e49b4 2874 use_access = 0;
5ff3f7a4 2875#endif
af9e49b4
NC		 2876 stat_mode = S_IWUSR;
2877 break;
a0d0e21e 2878
af9e49b4 2879 case OP_FTREXEC:
5ff3f7a4 2880#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 2881 access_mode = X_OK;
5ff3f7a4 2882#else
af9e49b4 2883 use_access = 0;
5ff3f7a4 2884#endif
af9e49b4
NC		 2885 stat_mode = S_IXUSR;
2886 break;
a0d0e21e 2887
af9e49b4 2888 case OP_FTEWRITE:
faee0e31 2889#ifdef PERL_EFF_ACCESS
af9e49b4 2890 access_mode = W_OK;
5ff3f7a4 2891#endif
af9e49b4
NC		 2892 stat_mode = S_IWUSR;
2893 /* Fall through */
a0d0e21e 2894
af9e49b4
NC		 2895 case OP_FTEREAD:
2896#ifndef PERL_EFF_ACCESS
2897 use_access = 0;
2898#endif
2899 effective = TRUE;
2900 break;
2901
2902
2903 case OP_FTEEXEC:
faee0e31 2904#ifdef PERL_EFF_ACCESS
af9e49b4 2905 access_mode = W_OK;
5ff3f7a4 2906#else
af9e49b4 2907 use_access = 0;
5ff3f7a4 2908#endif
af9e49b4
NC		 2909 stat_mode = S_IXUSR;
2910 effective = TRUE;
2911 break;
2912 }
a0d0e21e 2913
af9e49b4
NC		 2914 if (use_access) {
2915#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2916 const char *const name = POPpx;
2917 if (effective) {
2918# ifdef PERL_EFF_ACCESS
2919 result = PERL_EFF_ACCESS(name, access_mode);
2920# else
2921 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
2922 OP_NAME(PL_op));
2923# endif
2924 }
2925 else {
2926# ifdef HAS_ACCESS
2927 result = access(name, access_mode);
2928# else
2929 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
2930# endif
2931 }
5ff3f7a4
GS		 2932 if (result == 0)
2933 RETPUSHYES;
2934 if (result < 0)
2935 RETPUSHUNDEF;
2936 RETPUSHNO;
af9e49b4 2937#endif
22865c03 2938 }
af9e49b4 2939
cea2e8a9 2940 result = my_stat();
22865c03 2941 SPAGAIN;
a0d0e21e
LW		 2942 if (result < 0)
2943 RETPUSHUNDEF;
af9e49b4 2944 if (cando(stat_mode, effective, &PL_statcache))
a0d0e21e
LW		 2945 RETPUSHYES;
2946 RETPUSHNO;
2947}
2948
2949PP(pp_ftis)
2950{
97aff369 2951 dVAR;
fbb0b3b3 2952 I32 result;
d7f0a2f4 2953 const int op_type = PL_op->op_type;
2a3ff820 2954 dSP;
fbb0b3b3
RGS		 2955 STACKED_FTEST_CHECK;
2956 result = my_stat();
2957 SPAGAIN;
a0d0e21e
LW		 2958 if (result < 0)
2959 RETPUSHUNDEF;
d7f0a2f4
NC		 2960 if (op_type == OP_FTIS)
2961 RETPUSHYES;
957b0e1d 2962 {
d7f0a2f4
NC		 2963 /* You can't dTARGET inside OP_FTIS, because you'll get
2964 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 2965 dTARGET;
d7f0a2f4 2966 switch (op_type) {
957b0e1d
NC		 2967 case OP_FTSIZE:
2968#if Off_t_size > IVSIZE
2969 PUSHn(PL_statcache.st_size);
2970#else
2971 PUSHi(PL_statcache.st_size);
2972#endif
2973 break;
2974 case OP_FTMTIME:
2975 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
2976 break;
2977 case OP_FTATIME:
2978 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
2979 break;
2980 case OP_FTCTIME:
2981 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
2982 break;
2983 }
2984 }
2985 RETURN;
a0d0e21e
LW		 2986}
2987
a0d0e21e
LW		 2988PP(pp_ftrowned)
2989{
97aff369 2990 dVAR;
fbb0b3b3 2991 I32 result;
2a3ff820 2992 dSP;
17ad201a
NC		 2993
2994 /* I believe that all these three are likely to be defined on most every
2995 system these days. */
2996#ifndef S_ISUID
2997 if(PL_op->op_type == OP_FTSUID)
2998 RETPUSHNO;
2999#endif
3000#ifndef S_ISGID
3001 if(PL_op->op_type == OP_FTSGID)
3002 RETPUSHNO;
3003#endif
3004#ifndef S_ISVTX
3005 if(PL_op->op_type == OP_FTSVTX)
3006 RETPUSHNO;
3007#endif
3008
fbb0b3b3
RGS		 3009 STACKED_FTEST_CHECK;
3010 result = my_stat();
3011 SPAGAIN;
a0d0e21e
LW		 3012 if (result < 0)
3013 RETPUSHUNDEF;
f1cb2d48
NC		 3014 switch (PL_op->op_type) {
3015 case OP_FTROWNED:
9ab9fa88 3016 if (PL_statcache.st_uid == PL_uid)
f1cb2d48
NC		 3017 RETPUSHYES;
3018 break;
3019 case OP_FTEOWNED:
3020 if (PL_statcache.st_uid == PL_euid)
3021 RETPUSHYES;
3022 break;
3023 case OP_FTZERO:
3024 if (PL_statcache.st_size == 0)
3025 RETPUSHYES;
3026 break;
3027 case OP_FTSOCK:
3028 if (S_ISSOCK(PL_statcache.st_mode))
3029 RETPUSHYES;
3030 break;
3031 case OP_FTCHR:
3032 if (S_ISCHR(PL_statcache.st_mode))
3033 RETPUSHYES;
3034 break;
3035 case OP_FTBLK:
3036 if (S_ISBLK(PL_statcache.st_mode))
3037 RETPUSHYES;
3038 break;
3039 case OP_FTFILE:
3040 if (S_ISREG(PL_statcache.st_mode))
3041 RETPUSHYES;
3042 break;
3043 case OP_FTDIR:
3044 if (S_ISDIR(PL_statcache.st_mode))
3045 RETPUSHYES;
3046 break;
3047 case OP_FTPIPE:
3048 if (S_ISFIFO(PL_statcache.st_mode))
3049 RETPUSHYES;
3050 break;
a0d0e21e 3051#ifdef S_ISUID
17ad201a
NC		 3052 case OP_FTSUID:
3053 if (PL_statcache.st_mode & S_ISUID)
3054 RETPUSHYES;
3055 break;
a0d0e21e 3056#endif
a0d0e21e 3057#ifdef S_ISGID
17ad201a
NC		 3058 case OP_FTSGID:
3059 if (PL_statcache.st_mode & S_ISGID)
3060 RETPUSHYES;
3061 break;
3062#endif
3063#ifdef S_ISVTX
3064 case OP_FTSVTX:
3065 if (PL_statcache.st_mode & S_ISVTX)
3066 RETPUSHYES;
3067 break;
a0d0e21e 3068#endif
17ad201a 3069 }
a0d0e21e
LW		 3070 RETPUSHNO;
3071}
3072
17ad201a 3073PP(pp_ftlink)
a0d0e21e 3074{
97aff369 3075 dVAR;
17ad201a 3076 I32 result = my_lstat();
39644a26 3077 dSP;
a0d0e21e
LW		 3078 if (result < 0)
3079 RETPUSHUNDEF;
17ad201a 3080 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e 3081 RETPUSHYES;
a0d0e21e
LW		 3082 RETPUSHNO;
3083}
3084
3085PP(pp_fttty)
3086{
97aff369 3087 dVAR;
39644a26 3088 dSP;
a0d0e21e
LW		 3089 int fd;
3090 GV *gv;
a0714e2c 3091 SV *tmpsv = NULL;
fb73857a 3092
fbb0b3b3
RGS		 3093 STACKED_FTEST_CHECK;
3094
533c011a 3095 if (PL_op->op_flags & OPf_REF)
146174a9 3096 gv = cGVOP_gv;
fb73857a 3097 else if (isGV(TOPs))
3098 gv = (GV*)POPs;
3099 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3100 gv = (GV*)SvRV(POPs);
a0d0e21e 3101 else
f776e3cd 3102 gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
fb73857a 3103
a0d0e21e 3104 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3105 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
7a5fd60d 3106 else if (tmpsv && SvOK(tmpsv)) {
349d4f2f 3107 const char *tmps = SvPV_nolen_const(tmpsv);
7a5fd60d
NC		 3108 if (isDIGIT(*tmps))
3109 fd = atoi(tmps);
3110 else
3111 RETPUSHUNDEF;
3112 }
a0d0e21e
LW		 3113 else
3114 RETPUSHUNDEF;
6ad3d225 3115 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3116 RETPUSHYES;
3117 RETPUSHNO;
3118}
3119
16d20bd9
AD		 3120#if defined(atarist) /* this will work with atariST. Configure will
3121 make guesses for other systems. */
3122# define FILE_base(f) ((f)->_base)
3123# define FILE_ptr(f) ((f)->_ptr)
3124# define FILE_cnt(f) ((f)->_cnt)
3125# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3126#endif
3127
3128PP(pp_fttext)
3129{
97aff369 3130 dVAR;
39644a26 3131 dSP;
a0d0e21e
LW		 3132 I32 i;
3133 I32 len;
3134 I32 odd = 0;
3135 STDCHAR tbuf[512];
3136 register STDCHAR *s;
3137 register IO *io;
5f05dabc 3138 register SV *sv;
3139 GV *gv;
146174a9 3140 PerlIO *fp;
a0d0e21e 3141
fbb0b3b3
RGS		 3142 STACKED_FTEST_CHECK;
3143
533c011a 3144 if (PL_op->op_flags & OPf_REF)
146174a9 3145 gv = cGVOP_gv;
5f05dabc 3146 else if (isGV(TOPs))
3147 gv = (GV*)POPs;
3148 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3149 gv = (GV*)SvRV(POPs);
3150 else
a0714e2c 3151 gv = NULL;
5f05dabc 3152
3153 if (gv) {
a0d0e21e 3154 EXTEND(SP, 1);
3280af22
NIS		 3155 if (gv == PL_defgv) {
3156 if (PL_statgv)
3157 io = GvIO(PL_statgv);
a0d0e21e 3158 else {
3280af22 3159 sv = PL_statname;
a0d0e21e
LW		 3160 goto really_filename;
3161 }
3162 }
3163 else {
3280af22
NIS		 3164 PL_statgv = gv;
3165 PL_laststatval = -1;
c69006e4 3166 sv_setpvn(PL_statname, "", 0);
3280af22 3167 io = GvIO(PL_statgv);
a0d0e21e
LW		 3168 }
3169 if (io && IoIFP(io)) {
5f05dabc 3170 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3171 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3172 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3173 if (PL_laststatval < 0)
5f05dabc 3174 RETPUSHUNDEF;
9cbac4c7 3175 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3176 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3177 RETPUSHNO;
3178 else
3179 RETPUSHYES;
9cbac4c7 3180 }
a20bf0c3 3181 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3182 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3183 if (i != EOF)
760ac839 3184 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3185 }
a20bf0c3 3186 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3187 RETPUSHYES;
a20bf0c3
JH		 3188 len = PerlIO_get_bufsiz(IoIFP(io));
3189 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3190 /* sfio can have large buffers - limit to 512 */
3191 if (len > 512)
3192 len = 512;
a0d0e21e
LW		 3193 }
3194 else {
2dd78f96 3195 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3196 gv = cGVOP_gv;
2dd78f96 3197 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3198 }
93189314 3199 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 3200 RETPUSHUNDEF;
3201 }
3202 }
3203 else {
3204 sv = POPs;
5f05dabc 3205 really_filename:
a0714e2c 3206 PL_statgv = NULL;
5c9aa243 3207 PL_laststype = OP_STAT;
d5263905 3208 sv_setpv(PL_statname, SvPV_nolen_const(sv));
aa07b2f6 3209 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
349d4f2f
NC		 3210 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3211 '\n'))
9014280d 3212 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
a0d0e21e
LW		 3213 RETPUSHUNDEF;
3214 }
146174a9
CB		 3215 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3216 if (PL_laststatval < 0) {
3217 (void)PerlIO_close(fp);
5f05dabc 3218 RETPUSHUNDEF;
146174a9 3219 }
bd61b366 3220 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
146174a9
CB		 3221 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3222 (void)PerlIO_close(fp);
a0d0e21e 3223 if (len <= 0) {
533c011a 3224 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3225 RETPUSHNO; /* special case NFS directories */
3226 RETPUSHYES; /* null file is anything */
3227 }
3228 s = tbuf;
3229 }
3230
3231 /* now scan s to look for textiness */
4633a7c4 3232 /* XXX ASCII dependent code */
a0d0e21e 3233
146174a9
CB		 3234#if defined(DOSISH) || defined(USEMYBINMODE)
3235 /* ignore trailing ^Z on short files */
3236 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3237 --len;
3238#endif
3239
a0d0e21e
LW		 3240 for (i = 0; i < len; i++, s++) {
3241 if (!*s) { /* null never allowed in text */
3242 odd += len;
3243 break;
3244 }
9d116dd7 3245#ifdef EBCDIC
301e8125 3246 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3247 odd++;
3248#else
146174a9
CB		 3249 else if (*s & 128) {
3250#ifdef USE_LOCALE
2de3dbcc 3251 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3252 continue;
3253#endif
3254 /* utf8 characters don't count as odd */
fd400ab9 3255 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3256 int ulen = UTF8SKIP(s);
3257 if (ulen < len - i) {
3258 int j;
3259 for (j = 1; j < ulen; j++) {
fd400ab9 3260 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3261 goto not_utf8;
3262 }
3263 --ulen; /* loop does extra increment */
3264 s += ulen;
3265 i += ulen;
3266 continue;
3267 }
3268 }
3269 not_utf8:
3270 odd++;
146174a9 3271 }
a0d0e21e
LW		 3272 else if (*s < 32 &&
3273 *s != '\n' && *s != '\r' && *s != '\b' &&
3274 *s != '\t' && *s != '\f' && *s != 27)
3275 odd++;
9d116dd7 3276#endif
a0d0e21e
LW		 3277 }
3278
533c011a 3279 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3280 RETPUSHNO;
3281 else
3282 RETPUSHYES;
3283}
3284
a0d0e21e
LW		 3285/* File calls. */
3286
3287PP(pp_chdir)
3288{
97aff369 3289 dVAR; dSP; dTARGET;
c445ea15 3290 const char *tmps = NULL;
9a957fbc 3291 GV *gv = NULL;
a0d0e21e 3292
c4aca7d0 3293 if( MAXARG == 1 ) {
9a957fbc 3294 SV * const sv = POPs;
d4ac975e
GA		 3295 if (PL_op->op_flags & OPf_SPECIAL) {
3296 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3297 }
3298 else if (SvTYPE(sv) == SVt_PVGV) {
c4aca7d0
GA		 3299 gv = (GV*)sv;
3300 }
3301 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
3302 gv = (GV*)SvRV(sv);
3303 }
3304 else {
3305 tmps = SvPVx_nolen_const(sv);
3306 }
3307 }
35ae6b54 3308
c4aca7d0 3309 if( !gv && (!tmps || !*tmps) ) {
9a957fbc
AL		 3310 HV * const table = GvHVn(PL_envgv);
3311 SV **svp;
3312
a4fc7abc
AL		 3313 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3314 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
491527d0 3315#ifdef VMS
a4fc7abc 3316 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
491527d0 3317#endif
35ae6b54
MS		 3318 )
3319 {
3320 if( MAXARG == 1 )
9014280d 3321 deprecate("chdir('') or chdir(undef) as chdir()");
8c074e2a 3322 tmps = SvPV_nolen_const(*svp);
35ae6b54 3323 }
72f496dc 3324 else {
389ec635 3325 PUSHi(0);
b7ab37f8 3326 TAINT_PROPER("chdir");
389ec635
MS		 3327 RETURN;
3328 }
8ea155d1 3329 }
8ea155d1 3330
a0d0e21e 3331 TAINT_PROPER("chdir");
c4aca7d0
GA		 3332 if (gv) {
3333#ifdef HAS_FCHDIR
9a957fbc 3334 IO* const io = GvIO(gv);
c4aca7d0
GA		 3335 if (io) {
3336 if (IoIFP(io)) {
3337 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
3338 }
3339 else if (IoDIRP(io)) {
3340#ifdef HAS_DIRFD
3341 PUSHi(fchdir(dirfd(IoDIRP(io))) >= 0);
3342#else
0f1f2428 3343 DIE(aTHX_ PL_no_func, "dirfd");
c4aca7d0
GA		 3344#endif
3345 }
3346 else {
4dc171f0
PD		 3347 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3348 report_evil_fh(gv, io, PL_op->op_type);
3349 SETERRNO(EBADF, RMS_IFI);
c4aca7d0
GA		 3350 PUSHi(0);
3351 }
3352 }
3353 else {
4dc171f0
PD		 3354 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3355 report_evil_fh(gv, io, PL_op->op_type);
3356 SETERRNO(EBADF,RMS_IFI);
c4aca7d0
GA		 3357 PUSHi(0);
3358 }
3359#else
3360 DIE(aTHX_ PL_no_func, "fchdir");
3361#endif
3362 }
3363 else
b8ffc8df 3364 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3365#ifdef VMS
3366 /* Clear the DEFAULT element of ENV so we'll get the new value
3367 * in the future. */
6b88bc9c 3368 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3369#endif
a0d0e21e
LW		 3370 RETURN;
3371}
3372
3373PP(pp_chown)
3374{
97aff369 3375 dVAR; dSP; dMARK; dTARGET;
605b9385 3376 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
76ffd3b9 3377
a0d0e21e 3378 SP = MARK;
b59aed67 3379 XPUSHi(value);
a0d0e21e 3380 RETURN;
a0d0e21e
LW		 3381}
3382
3383PP(pp_chroot)
3384{
a0d0e21e 3385#ifdef HAS_CHROOT
97aff369 3386 dVAR; dSP; dTARGET;
7452cf6a 3387 char * const tmps = POPpx;
a0d0e21e
LW		 3388 TAINT_PROPER("chroot");
3389 PUSHi( chroot(tmps) >= 0 );
3390 RETURN;
3391#else
cea2e8a9 3392 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3393#endif
3394}
3395
a0d0e21e
LW		 3396PP(pp_rename)
3397{
97aff369 3398 dVAR; dSP; dTARGET;
a0d0e21e 3399 int anum;
7452cf6a
AL		 3400 const char * const tmps2 = POPpconstx;
3401 const char * const tmps = SvPV_nolen_const(TOPs);
a0d0e21e
LW		 3402 TAINT_PROPER("rename");
3403#ifdef HAS_RENAME
baed7233 3404 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3405#else
6b88bc9c 3406 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
ed969818
W		 3407 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3408 anum = 1;
3409 else {
3654eb6c 3410 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
ed969818
W		 3411 (void)UNLINK(tmps2);
3412 if (!(anum = link(tmps, tmps2)))
3413 anum = UNLINK(tmps);
3414 }
a0d0e21e
LW		 3415 }
3416#endif
3417 SETi( anum >= 0 );
3418 RETURN;
3419}
3420
ce6987d0 3421#if defined(HAS_LINK) || defined(HAS_SYMLINK)
a0d0e21e
LW		 3422PP(pp_link)
3423{
97aff369 3424 dVAR; dSP; dTARGET;
ce6987d0
NC		 3425 const int op_type = PL_op->op_type;
3426 int result;
a0d0e21e 3427
ce6987d0
NC		 3428# ifndef HAS_LINK
3429 if (op_type == OP_LINK)
3430 DIE(aTHX_ PL_no_func, "link");
3431# endif
3432# ifndef HAS_SYMLINK
3433 if (op_type == OP_SYMLINK)
3434 DIE(aTHX_ PL_no_func, "symlink");
3435# endif
3436
3437 {
7452cf6a
AL		 3438 const char * const tmps2 = POPpconstx;
3439 const char * const tmps = SvPV_nolen_const(TOPs);
ce6987d0
NC		 3440 TAINT_PROPER(PL_op_desc[op_type]);
3441 result =
3442# if defined(HAS_LINK)
3443# if defined(HAS_SYMLINK)
3444 /* Both present - need to choose which. */
3445 (op_type == OP_LINK) ?
3446 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3447# else
4a8ebb7f
SH		 3448 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3449 PerlLIO_link(tmps, tmps2);
ce6987d0
NC		 3450# endif
3451# else
3452# if defined(HAS_SYMLINK)
4a8ebb7f
SH		 3453 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3454 symlink(tmps, tmps2);
ce6987d0
NC		 3455# endif
3456# endif
3457 }
3458
3459 SETi( result >= 0 );
a0d0e21e 3460 RETURN;
ce6987d0 3461}
a0d0e21e 3462#else
ce6987d0
NC		 3463PP(pp_link)
3464{
3465 /* Have neither. */
3466 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 3467}
ce6987d0 3468#endif
a0d0e21e
LW		 3469
3470PP(pp_readlink)
3471{
97aff369 3472 dVAR;
76ffd3b9 3473 dSP;
a0d0e21e 3474#ifdef HAS_SYMLINK
76ffd3b9 3475 dTARGET;
10516c54 3476 const char *tmps;
46fc3d4c 3477 char buf[MAXPATHLEN];
a0d0e21e 3478 int len;
46fc3d4c 3479
fb73857a 3480#ifndef INCOMPLETE_TAINTS
3481 TAINT;
3482#endif
10516c54 3483 tmps = POPpconstx;
97dcea33 3484 len = readlink(tmps, buf, sizeof(buf) - 1);
a0d0e21e
LW		 3485 EXTEND(SP, 1);
3486 if (len < 0)
3487 RETPUSHUNDEF;
3488 PUSHp(buf, len);
3489 RETURN;
3490#else
3491 EXTEND(SP, 1);
3492 RETSETUNDEF; /* just pretend it's a normal file */
3493#endif
3494}
3495
3496#if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
ba106d47 3497STATIC int
b464bac0 3498S_dooneliner(pTHX_ const char *cmd, const char *filename)
a0d0e21e 3499{
b464bac0 3500 char * const save_filename = filename;
1e422769 3501 char *cmdline;
3502 char *s;
760ac839 3503 PerlIO *myfp;
1e422769 3504 int anum = 1;
a0d0e21e 3505
a02a5408 3506 Newx(cmdline, strlen(cmd) + (strlen(filename) * 2) + 10, char);
1e422769 3507 strcpy(cmdline, cmd);
3508 strcat(cmdline, " ");
3509 for (s = cmdline + strlen(cmdline); *filename; ) {
a0d0e21e
LW		 3510 *s++ = '\\';
3511 *s++ = *filename++;
3512 }
3513 strcpy(s, " 2>&1");
6ad3d225 3514 myfp = PerlProc_popen(cmdline, "r");
1e422769 3515 Safefree(cmdline);
3516
a0d0e21e 3517 if (myfp) {
0bcc34c2 3518 SV * const tmpsv = sv_newmortal();
6b88bc9c 3519 /* Need to save/restore 'PL_rs' ?? */
760ac839 3520 s = sv_gets(tmpsv, myfp, 0);
6ad3d225 3521 (void)PerlProc_pclose(myfp);
bd61b366 3522 if (s != NULL) {
1e422769 3523 int e;
3524 for (e = 1;
a0d0e21e 3525#ifdef HAS_SYS_ERRLIST
1e422769 3526 e <= sys_nerr
3527#endif
3528 ; e++)
3529 {
3530 /* you don't see this */
6136c704 3531 const char * const errmsg =
1e422769 3532#ifdef HAS_SYS_ERRLIST
3533 sys_errlist[e]
a0d0e21e 3534#else
1e422769 3535 strerror(e)
a0d0e21e 3536#endif
1e422769 3537 ;
3538 if (!errmsg)
3539 break;
3540 if (instr(s, errmsg)) {
3541 SETERRNO(e,0);
3542 return 0;
3543 }
a0d0e21e 3544 }
748a9306 3545 SETERRNO(0,0);
a0d0e21e
LW		 3546#ifndef EACCES
3547#define EACCES EPERM
3548#endif
1e422769 3549 if (instr(s, "cannot make"))
93189314 3550 SETERRNO(EEXIST,RMS_FEX);
1e422769 3551 else if (instr(s, "existing file"))
93189314 3552 SETERRNO(EEXIST,RMS_FEX);
1e422769 3553 else if (instr(s, "ile exists"))
93189314 3554 SETERRNO(EEXIST,RMS_FEX);
1e422769 3555 else if (instr(s, "non-exist"))
93189314 3556 SETERRNO(ENOENT,RMS_FNF);
1e422769 3557 else if (instr(s, "does not exist"))
93189314 3558 SETERRNO(ENOENT,RMS_FNF);
1e422769 3559 else if (instr(s, "not empty"))
93189314 3560 SETERRNO(EBUSY,SS_DEVOFFLINE);
1e422769 3561 else if (instr(s, "cannot access"))
93189314 3562 SETERRNO(EACCES,RMS_PRV);
a0d0e21e 3563 else
93189314 3564 SETERRNO(EPERM,RMS_PRV);
a0d0e21e
LW		 3565 return 0;
3566 }
3567 else { /* some mkdirs return no failure indication */
6b88bc9c 3568 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
911d147d 3569 if (PL_op->op_type == OP_RMDIR)
a0d0e21e
LW		 3570 anum = !anum;
3571 if (anum)
748a9306 3572 SETERRNO(0,0);
a0d0e21e 3573 else
93189314 3574 SETERRNO(EACCES,RMS_PRV); /* a guess */
a0d0e21e
LW		 3575 }
3576 return anum;
3577 }
3578 else
3579 return 0;
3580}
3581#endif
3582
0c54f65b
RGS		 3583/* This macro removes trailing slashes from a directory name.
3584 * Different operating and file systems take differently to
3585 * trailing slashes. According to POSIX 1003.1 1996 Edition
3586 * any number of trailing slashes should be allowed.
3587 * Thusly we snip them away so that even non-conforming
3588 * systems are happy.
3589 * We should probably do this "filtering" for all
3590 * the functions that expect (potentially) directory names:
3591 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3592 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3593
5c144d81 3594#define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
0c54f65b
RGS		 3595 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3596 do { \
3597 (len)--; \
3598 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3599 (tmps) = savepvn((tmps), (len)); \
3600 (copy) = TRUE; \
3601 }
3602
a0d0e21e
LW		 3603PP(pp_mkdir)
3604{
97aff369 3605 dVAR; dSP; dTARGET;
df25ddba 3606 STRLEN len;
5c144d81 3607 const char *tmps;
df25ddba 3608 bool copy = FALSE;
7452cf6a 3609 const int mode = (MAXARG > 1) ? POPi : 0777;
5a211162 3610
0c54f65b 3611 TRIMSLASHES(tmps,len,copy);
a0d0e21e
LW		 3612
3613 TAINT_PROPER("mkdir");
3614#ifdef HAS_MKDIR
b8ffc8df 3615 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
a0d0e21e 3616#else
0bcc34c2
AL		 3617 {
3618 int oldumask;
a0d0e21e 3619 SETi( dooneliner("mkdir", tmps) );
6ad3d225
GS		 3620 oldumask = PerlLIO_umask(0);
3621 PerlLIO_umask(oldumask);
3622 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
0bcc34c2 3623 }
a0d0e21e 3624#endif
df25ddba
JH		 3625 if (copy)
3626 Safefree(tmps);
a0d0e21e
LW		 3627 RETURN;
3628}
3629
3630PP(pp_rmdir)
3631{
97aff369 3632 dVAR; dSP; dTARGET;
0c54f65b 3633 STRLEN len;
5c144d81 3634 const char *tmps;
0c54f65b 3635 bool copy = FALSE;
a0d0e21e 3636
0c54f65b 3637 TRIMSLASHES(tmps,len,copy);
a0d0e21e
LW		 3638 TAINT_PROPER("rmdir");
3639#ifdef HAS_RMDIR
b8ffc8df 3640 SETi( PerlDir_rmdir(tmps) >= 0 );
a0d0e21e 3641#else
0c54f65b 3642 SETi( dooneliner("rmdir", tmps) );
a0d0e21e 3643#endif
0c54f65b
RGS		 3644 if (copy)
3645 Safefree(tmps);
a0d0e21e
LW		 3646 RETURN;
3647}
3648
3649/* Directory calls. */
3650
3651PP(pp_open_dir)
3652{
a0d0e21e 3653#if defined(Direntry_t) && defined(HAS_READDIR)
97aff369 3654 dVAR; dSP;
7452cf6a
AL		 3655 const char * const dirname = POPpconstx;
3656 GV * const gv = (GV*)POPs;
3657 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 3658
3659 if (!io)
3660 goto nope;
3661
3662 if (IoDIRP(io))
6ad3d225 3663 PerlDir_close(IoDIRP(io));
b8ffc8df 3664 if (!(IoDIRP(io) = PerlDir_open(dirname)))
a0d0e21e
LW		 3665 goto nope;
3666
3667 RETPUSHYES;
3668nope:
3669 if (!errno)
93189314 3670 SETERRNO(EBADF,RMS_DIR);
a0d0e21e
LW		 3671 RETPUSHUNDEF;
3672#else
cea2e8a9 3673 DIE(aTHX_ PL_no_dir_func, "opendir");
a0d0e21e
LW		 3674#endif
3675}
3676
3677PP(pp_readdir)
3678{
34b7f128
AMS		 3679#if !defined(Direntry_t) || !defined(HAS_READDIR)
3680 DIE(aTHX_ PL_no_dir_func, "readdir");
3681#else
fd8cd3a3 3682#if !defined(I_DIRENT) && !defined(VMS)
20ce7b12 3683 Direntry_t *readdir (DIR *);
a0d0e21e 3684#endif
97aff369 3685 dVAR;
34b7f128
AMS		 3686 dSP;
3687
3688 SV *sv;
f54cb97a 3689 const I32 gimme = GIMME;
7452cf6a
AL		 3690 GV * const gv = (GV *)POPs;
3691 register const Direntry_t *dp;
3692 register IO * const io = GvIOn(gv);
a0d0e21e 3693
3b7fbd4a
SP		 3694 if (!io || !IoDIRP(io)) {
3695 if(ckWARN(WARN_IO)) {
3696 Perl_warner(aTHX_ packWARN(WARN_IO),
3697 "readdir() attempted on invalid dirhandle %s", GvENAME(gv));
3698 }
3699 goto nope;
3700 }
a0d0e21e 3701
34b7f128
AMS		 3702 do {
3703 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
3704 if (!dp)
3705 break;
a0d0e21e 3706#ifdef DIRNAMLEN
34b7f128 3707 sv = newSVpvn(dp->d_name, dp->d_namlen);
a0d0e21e 3708#else
34b7f128 3709 sv = newSVpv(dp->d_name, 0);
fb73857a 3710#endif
3711#ifndef INCOMPLETE_TAINTS
34b7f128
AMS		 3712 if (!(IoFLAGS(io) & IOf_UNTAINT))
3713 SvTAINTED_on(sv);
a0d0e21e 3714#endif
34b7f128 3715 XPUSHs(sv_2mortal(sv));
a0d0e21e 3716 }
34b7f128
AMS		 3717 while (gimme == G_ARRAY);
3718
3719 if (!dp && gimme != G_ARRAY)
3720 goto nope;
3721
a0d0e21e
LW		 3722 RETURN;
3723
3724nope:
3725 if (!errno)
93189314 3726 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 3727 if (GIMME == G_ARRAY)
3728 RETURN;
3729 else
3730 RETPUSHUNDEF;
a0d0e21e
LW		 3731#endif
3732}
3733
3734PP(pp_telldir)
3735{
a0d0e21e 3736#if defined(HAS_TELLDIR) || defined(telldir)
27da23d5 3737 dVAR; dSP; dTARGET;
968dcd91
JH		 3738 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3739 /* XXX netbsd still seemed to.
3740 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3741 --JHI 1999-Feb-02 */
3742# if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
20ce7b12 3743 long telldir (DIR *);
dfe9444c 3744# endif
7452cf6a
AL		 3745 GV * const gv = (GV*)POPs;
3746 register IO * const io = GvIOn(gv);
a0d0e21e 3747
abc7ecad
SP		 3748 if (!io || !IoDIRP(io)) {
3749 if(ckWARN(WARN_IO)) {
3750 Perl_warner(aTHX_ packWARN(WARN_IO),
3751 "telldir() attempted on invalid dirhandle %s", GvENAME(gv));
3752 }
3753 goto nope;
3754 }
a0d0e21e 3755
6ad3d225 3756 PUSHi( PerlDir_tell(IoDIRP(io)) );
a0d0e21e
LW		 3757 RETURN;
3758nope:
3759 if (!errno)
93189314 3760 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 3761 RETPUSHUNDEF;
3762#else
cea2e8a9 3763 DIE(aTHX_ PL_no_dir_func, "telldir");
a0d0e21e
LW		 3764#endif
3765}
3766
3767PP(pp_seekdir)
3768{
a0d0e21e 3769#if defined(HAS_SEEKDIR) || defined(seekdir)
97aff369 3770 dVAR; dSP;
7452cf6a
AL		 3771 const long along = POPl;
3772 GV * const gv = (GV*)POPs;
3773 register IO * const io = GvIOn(gv);
a0d0e21e 3774
abc7ecad
SP		 3775 if (!io || !IoDIRP(io)) {
3776 if(ckWARN(WARN_IO)) {
3777 Perl_warner(aTHX_ packWARN(WARN_IO),
3778 "seekdir() attempted on invalid dirhandle %s", GvENAME(gv));
3779 }
3780 goto nope;
3781 }
6ad3d225 3782 (void)PerlDir_seek(IoDIRP(io), along);
a0d0e21e
LW		 3783
3784 RETPUSHYES;
3785nope:
3786 if (!errno)
93189314 3787 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 3788 RETPUSHUNDEF;
3789#else
cea2e8a9 3790 DIE(aTHX_ PL_no_dir_func, "seekdir");
a0d0e21e
LW		 3791#endif
3792}
3793
3794PP(pp_rewinddir)
3795{
a0d0e21e 3796#if defined(HAS_REWINDDIR) || defined(rewinddir)
97aff369 3797 dVAR; dSP;
7452cf6a
AL		 3798 GV * const gv = (GV*)POPs;
3799 register IO * const io = GvIOn(gv);
a0d0e21e 3800
abc7ecad
SP		 3801 if (!io || !IoDIRP(io)) {
3802 if(ckWARN(WARN_IO)) {
3803 Perl_warner(aTHX_ packWARN(WARN_IO),
3804 "rewinddir() attempted on invalid dirhandle %s", GvENAME(gv));
3805 }
a0d0e21e 3806 goto nope;
abc7ecad 3807 }
6ad3d225 3808 (void)PerlDir_rewind(IoDIRP(io));
a0d0e21e
LW		 3809 RETPUSHYES;
3810nope:
3811 if (!errno)
93189314 3812 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 3813 RETPUSHUNDEF;
3814#else
cea2e8a9 3815 DIE(aTHX_ PL_no_dir_func, "rewinddir");
a0d0e21e
LW		 3816#endif
3817}
3818
3819PP(pp_closedir)
3820{
a0d0e21e 3821#if defined(Direntry_t) && defined(HAS_READDIR)
97aff369 3822 dVAR; dSP;
7452cf6a
AL		 3823 GV * const gv = (GV*)POPs;
3824 register IO * const io = GvIOn(gv);
a0d0e21e 3825
abc7ecad
SP		 3826 if (!io || !IoDIRP(io)) {
3827 if(ckWARN(WARN_IO)) {
3828 Perl_warner(aTHX_ packWARN(WARN_IO),
3829 "closedir() attempted on invalid dirhandle %s", GvENAME(gv));
3830 }
3831 goto nope;
3832 }
a0d0e21e 3833#ifdef VOID_CLOSEDIR
6ad3d225 3834 PerlDir_close(IoDIRP(io));
a0d0e21e 3835#else
6ad3d225 3836 if (PerlDir_close(IoDIRP(io)) < 0) {
748a9306 3837 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
a0d0e21e 3838 goto nope;
748a9306 3839 }
a0d0e21e
LW		 3840#endif
3841 IoDIRP(io) = 0;
3842
3843 RETPUSHYES;
3844nope:
3845 if (!errno)
93189314 3846 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 3847 RETPUSHUNDEF;
3848#else
cea2e8a9 3849 DIE(aTHX_ PL_no_dir_func, "closedir");
a0d0e21e
LW		 3850#endif
3851}
3852
3853/* Process control. */
3854
3855PP(pp_fork)
3856{
44a8e56a 3857#ifdef HAS_FORK
97aff369 3858 dVAR; dSP; dTARGET;
761237fe 3859 Pid_t childpid;
a0d0e21e
LW		 3860
3861 EXTEND(SP, 1);
45bc9206 3862 PERL_FLUSHALL_FOR_CHILD;
52e18b1f 3863 childpid = PerlProc_fork();
a0d0e21e
LW		 3864 if (childpid < 0)
3865 RETSETUNDEF;
3866 if (!childpid) {
fafc274c 3867 GV * const tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV);
7452cf6a 3868 if (tmpgv) {
306196c3 3869 SvREADONLY_off(GvSV(tmpgv));
146174a9 3870 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
306196c3
MS		 3871 SvREADONLY_on(GvSV(tmpgv));
3872 }
4d76a344
RGS		 3873#ifdef THREADS_HAVE_PIDS
3874 PL_ppid = (IV)getppid();
3875#endif
ca0c25f6 3876#ifdef PERL_USES_PL_PIDSTATUS
3280af22 3877 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
ca0c25f6 3878#endif
a0d0e21e
LW		 3879 }
3880 PUSHi(childpid);
3881 RETURN;
3882#else
146174a9 3883# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
39644a26 3884 dSP; dTARGET;
146174a9
CB		 3885 Pid_t childpid;
3886
3887 EXTEND(SP, 1);
3888 PERL_FLUSHALL_FOR_CHILD;
3889 childpid = PerlProc_fork();
60fa28ff
GS		 3890 if (childpid == -1)
3891 RETSETUNDEF;
146174a9
CB		 3892 PUSHi(childpid);
3893 RETURN;
3894# else
0322a713 3895 DIE(aTHX_ PL_no_func, "fork");
146174a9 3896# endif
a0d0e21e
LW		 3897#endif
3898}
3899
3900PP(pp_wait)
3901{
301e8125 3902#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
97aff369 3903 dVAR; dSP; dTARGET;
761237fe 3904 Pid_t childpid;
a0d0e21e 3905 int argflags;
a0d0e21e 3906
4ffa73a3
JH		 3907 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
3908 childpid = wait4pid(-1, &argflags, 0);
3909 else {
3910 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
3911 errno == EINTR) {
3912 PERL_ASYNC_CHECK();
3913 }
0a0ada86 3914 }
68a29c53
GS		 3915# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3916 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
2fbb330f 3917 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
68a29c53 3918# else
2fbb330f 3919 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
68a29c53 3920# endif
44a8e56a 3921 XPUSHi(childpid);
a0d0e21e
LW		 3922 RETURN;
3923#else
0322a713 3924 DIE(aTHX_ PL_no_func, "wait");
a0d0e21e
LW		 3925#endif
3926}
3927
3928PP(pp_waitpid)
3929{
301e8125 3930#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
97aff369 3931 dVAR; dSP; dTARGET;
0bcc34c2
AL		 3932 const int optype = POPi;
3933 const Pid_t pid = TOPi;
2ec0bfb3 3934 Pid_t result;
a0d0e21e 3935 int argflags;
a0d0e21e 3936
4ffa73a3 3937 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
2ec0bfb3 3938 result = wait4pid(pid, &argflags, optype);
4ffa73a3 3939 else {
2ec0bfb3 3940 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4ffa73a3
JH		 3941 errno == EINTR) {
3942 PERL_ASYNC_CHECK();
3943 }
0a0ada86 3944 }
68a29c53
GS		 3945# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3946 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
2fbb330f 3947 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
68a29c53 3948# else
2fbb330f 3949 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
68a29c53 3950# endif
2ec0bfb3 3951 SETi(result);
a0d0e21e
LW		 3952 RETURN;
3953#else
0322a713 3954 DIE(aTHX_ PL_no_func, "waitpid");
a0d0e21e
LW		 3955#endif
3956}
3957
3958PP(pp_system)
3959{
97aff369 3960 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 3961 I32 value;
76ffd3b9 3962 int result;
a0d0e21e 3963
bbd7eb8a
RD		 3964 if (PL_tainting) {
3965 TAINT_ENV();
3966 while (++MARK <= SP) {
10516c54 3967 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
5a445156 3968 if (PL_tainted)
bbd7eb8a
RD		 3969 break;
3970 }
3971 MARK = ORIGMARK;
5a445156 3972 TAINT_PROPER("system");
a0d0e21e 3973 }
45bc9206 3974 PERL_FLUSHALL_FOR_CHILD;
273b0206 3975#if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
d7e492a4 3976 {
eb160463
GS		 3977 Pid_t childpid;
3978 int pp[2];
27da23d5 3979 I32 did_pipes = 0;
eb160463
GS		 3980
3981 if (PerlProc_pipe(pp) >= 0)
3982 did_pipes = 1;
3983 while ((childpid = PerlProc_fork()) == -1) {
3984 if (errno != EAGAIN) {
3985 value = -1;
3986 SP = ORIGMARK;
b59aed67 3987 XPUSHi(value);
eb160463
GS		 3988 if (did_pipes) {
3989 PerlLIO_close(pp[0]);
3990 PerlLIO_close(pp[1]);
3991 }
3992 RETURN;
3993 }
3994 sleep(5);
3995 }
3996 if (childpid > 0) {
3997 Sigsave_t ihand,qhand; /* place to save signals during system() */
3998 int status;
3999
4000 if (did_pipes)
4001 PerlLIO_close(pp[1]);
64ca3a65 4002#ifndef PERL_MICRO
8aad04aa
JH		 4003 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4004 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
64ca3a65 4005#endif
eb160463
GS		 4006 do {
4007 result = wait4pid(childpid, &status, 0);
4008 } while (result == -1 && errno == EINTR);
64ca3a65 4009#ifndef PERL_MICRO
eb160463
GS		 4010 (void)rsignal_restore(SIGINT, &ihand);
4011 (void)rsignal_restore(SIGQUIT, &qhand);
4012#endif
37038d91 4013 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
eb160463
GS		 4014 do_execfree(); /* free any memory child malloced on fork */
4015 SP = ORIGMARK;
4016 if (did_pipes) {
4017 int errkid;
4018 int n = 0, n1;
4019
4020 while (n < sizeof(int)) {
4021 n1 = PerlLIO_read(pp[0],
4022 (void*)(((char*)&errkid)+n),
4023 (sizeof(int)) - n);
4024 if (n1 <= 0)
4025 break;
4026 n += n1;
4027 }
4028 PerlLIO_close(pp[0]);
4029 if (n) { /* Error */
4030 if (n != sizeof(int))
4031 DIE(aTHX_ "panic: kid popen errno read");
4032 errno = errkid; /* Propagate errno from kid */
37038d91 4033 STATUS_NATIVE_CHILD_SET(-1);
eb160463
GS		 4034 }
4035 }
b59aed67 4036 XPUSHi(STATUS_CURRENT);
eb160463
GS		 4037 RETURN;
4038 }
4039 if (did_pipes) {
4040 PerlLIO_close(pp[0]);
d5a9bfb0 4041#if defined(HAS_FCNTL) && defined(F_SETFD)
eb160463 4042 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
d5a9bfb0 4043#endif
eb160463 4044 }
e0a1f643 4045 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4046 SV * const really = *++MARK;
e0a1f643
JH		 4047 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4048 }
4049 else if (SP - MARK != 1)
a0714e2c 4050 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
e0a1f643 4051 else {
8c074e2a 4052 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
e0a1f643
JH		 4053 }
4054 PerlProc__exit(-1);
d5a9bfb0 4055 }
c3293030 4056#else /* ! FORK or VMS or OS/2 */
922b1888
GS		 4057 PL_statusvalue = 0;
4058 result = 0;
911d147d 4059 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4060 SV * const really = *++MARK;
a0fd4948 4061# if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
54725af6
GS		 4062 value = (I32)do_aspawn(really, MARK, SP);
4063# else
c5be433b 4064 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
54725af6 4065# endif
a0d0e21e 4066 }
54725af6 4067 else if (SP - MARK != 1) {
a0fd4948 4068# if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
a0714e2c 4069 value = (I32)do_aspawn(NULL, MARK, SP);
54725af6 4070# else
a0714e2c 4071 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
54725af6
GS		 4072# endif
4073 }
a0d0e21e 4074 else {
8c074e2a 4075 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e 4076 }
922b1888
GS		 4077 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4078 result = 1;
2fbb330f 4079 STATUS_NATIVE_CHILD_SET(value);
a0d0e21e
LW		 4080 do_execfree();
4081 SP = ORIGMARK;
b59aed67 4082 XPUSHi(result ? value : STATUS_CURRENT);
a0d0e21e
LW		 4083#endif /* !FORK or VMS */
4084 RETURN;
4085}
4086
4087PP(pp_exec)
4088{
97aff369 4089 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 4090 I32 value;
4091
bbd7eb8a
RD		 4092 if (PL_tainting) {
4093 TAINT_ENV();
4094 while (++MARK <= SP) {
10516c54 4095 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
5a445156 4096 if (PL_tainted)
bbd7eb8a
RD		 4097 break;
4098 }
4099 MARK = ORIGMARK;
5a445156 4100 TAINT_PROPER("exec");
bbd7eb8a 4101 }
45bc9206 4102 PERL_FLUSHALL_FOR_CHILD;
533c011a 4103 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4104 SV * const really = *++MARK;
a0d0e21e
LW		 4105 value = (I32)do_aexec(really, MARK, SP);
4106 }
4107 else if (SP - MARK != 1)
4108#ifdef VMS
a0714e2c 4109 value = (I32)vms_do_aexec(NULL, MARK, SP);
a0d0e21e 4110#else
092bebab
JH		 4111# ifdef __OPEN_VM
4112 {
a0714e2c 4113 (void ) do_aspawn(NULL, MARK, SP);
092bebab
JH		 4114 value = 0;
4115 }
4116# else
a0714e2c 4117 value = (I32)do_aexec(NULL, MARK, SP);
092bebab 4118# endif
a0d0e21e
LW		 4119#endif
4120 else {
a0d0e21e 4121#ifdef VMS
8c074e2a 4122 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e 4123#else
092bebab 4124# ifdef __OPEN_VM
8c074e2a 4125 (void) do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
092bebab
JH		 4126 value = 0;
4127# else
8c074e2a 4128 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
092bebab 4129# endif
a0d0e21e
LW		 4130#endif
4131 }
146174a9 4132
a0d0e21e 4133 SP = ORIGMARK;
b59aed67 4134 XPUSHi(value);
a0d0e21e
LW		 4135 RETURN;
4136}
4137
a0d0e21e
LW		 4138PP(pp_getppid)
4139{
4140#ifdef HAS_GETPPID
97aff369 4141 dVAR; dSP; dTARGET;
4d76a344 4142# ifdef THREADS_HAVE_PIDS
e39f92a7
RGS		 4143 if (PL_ppid != 1 && getppid() == 1)
4144 /* maybe the parent process has died. Refresh ppid cache */
4145 PL_ppid = 1;
4d76a344
RGS		 4146 XPUSHi( PL_ppid );
4147# else
a0d0e21e 4148 XPUSHi( getppid() );
4d76a344 4149# endif
a0d0e21e
LW		 4150 RETURN;
4151#else
cea2e8a9 4152 DIE(aTHX_ PL_no_func, "getppid");
a0d0e21e
LW		 4153#endif
4154}
4155
4156PP(pp_getpgrp)
4157{
4158#ifdef HAS_GETPGRP
97aff369 4159 dVAR; dSP; dTARGET;
9853a804 4160 Pid_t pgrp;
0bcc34c2 4161 const Pid_t pid = (MAXARG < 1) ? 0 : SvIVx(POPs);
a0d0e21e 4162
c3293030 4163#ifdef BSD_GETPGRP
9853a804 4164 pgrp = (I32)BSD_GETPGRP(pid);
a0d0e21e 4165#else
146174a9 4166 if (pid != 0 && pid != PerlProc_getpid())
cea2e8a9 4167 DIE(aTHX_ "POSIX getpgrp can't take an argument");
9853a804 4168 pgrp = getpgrp();
a0d0e21e 4169#endif
9853a804 4170 XPUSHi(pgrp);
a0d0e21e
LW		 4171 RETURN;
4172#else
cea2e8a9 4173 DIE(aTHX_ PL_no_func, "getpgrp()");
a0d0e21e
LW		 4174#endif
4175}
4176
4177PP(pp_setpgrp)
4178{
4179#ifdef HAS_SETPGRP
97aff369 4180 dVAR; dSP; dTARGET;
d8a83dd3
JH		 4181 Pid_t pgrp;
4182 Pid_t pid;
a0d0e21e
LW		 4183 if (MAXARG < 2) {
4184 pgrp = 0;
4185 pid = 0;
4186 }
4187 else {
4188 pgrp = POPi;
4189 pid = TOPi;
4190 }
4191
4192 TAINT_PROPER("setpgrp");
c3293030
IZ		 4193#ifdef BSD_SETPGRP
4194 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
a0d0e21e 4195#else
146174a9
CB		 4196 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4197 || (pid != 0 && pid != PerlProc_getpid()))
4198 {
4199 DIE(aTHX_ "setpgrp can't take arguments");
4200 }
a0d0e21e
LW		 4201 SETi( setpgrp() >= 0 );
4202#endif /* USE_BSDPGRP */
4203 RETURN;
4204#else
cea2e8a9 4205 DIE(aTHX_ PL_no_func, "setpgrp()");
a0d0e21e
LW		 4206#endif
4207}
4208
4209PP(pp_getpriority)
4210{
a0d0e21e 4211#ifdef HAS_GETPRIORITY
97aff369 4212 dVAR; dSP; dTARGET;
0bcc34c2
AL		 4213 const int who = POPi;
4214 const int which = TOPi;
a0d0e21e
LW		 4215 SETi( getpriority(which, who) );
4216 RETURN;
4217#else
cea2e8a9 4218 DIE(aTHX_ PL_no_func, "getpriority()");
a0d0e21e
LW		 4219#endif
4220}
4221
4222PP(pp_setpriority)
4223{
a0d0e21e 4224#ifdef HAS_SETPRIORITY
97aff369 4225 dVAR; dSP; dTARGET;
0bcc34c2
AL		 4226 const int niceval = POPi;
4227 const int who = POPi;
4228 const int which = TOPi;
a0d0e21e
LW		 4229 TAINT_PROPER("setpriority");
4230 SETi( setpriority(which, who, niceval) >= 0 );
4231 RETURN;
4232#else
cea2e8a9 4233 DIE(aTHX_ PL_no_func, "setpriority()");
a0d0e21e
LW		 4234#endif
4235}
4236
4237/* Time calls. */
4238
4239PP(pp_time)
4240{
97aff369 4241 dVAR; dSP; dTARGET;
cbdc8872 4242#ifdef BIG_TIME
4608196e 4243 XPUSHn( time(NULL) );
cbdc8872 4244#else
4608196e 4245 XPUSHi( time(NULL) );
cbdc8872 4246#endif
a0d0e21e
LW		 4247 RETURN;
4248}
4249
a0d0e21e
LW		 4250PP(pp_tms)
4251{
9cad6237 4252#ifdef HAS_TIMES
97aff369 4253 dVAR;
39644a26 4254 dSP;
a0d0e21e 4255 EXTEND(SP, 4);
a0d0e21e 4256#ifndef VMS
3280af22 4257 (void)PerlProc_times(&PL_timesbuf);
a0d0e21e 4258#else
6b88bc9c 4259 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
76e3520e
GS		 4260 /* struct tms, though same data */
4261 /* is returned. */
a0d0e21e
LW		 4262#endif
4263
5311654c 4264 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick)));
a0d0e21e 4265 if (GIMME == G_ARRAY) {
5311654c
JH		 4266 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick)));
4267 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick)));
4268 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick)));
a0d0e21e
LW		 4269 }
4270 RETURN;
9cad6237 4271#else
2f42fcb0
JH		 4272# ifdef PERL_MICRO
4273 dSP;
4274 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4275 EXTEND(SP, 4);
4276 if (GIMME == G_ARRAY) {
4277 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4278 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4279 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4280 }
4281 RETURN;
4282# else
9cad6237 4283 DIE(aTHX_ "times not implemented");
2f42fcb0 4284# endif
55497cff 4285#endif /* HAS_TIMES */
a0d0e21e
LW		 4286}
4287
a4323dee 4288#ifdef LOCALTIME_EDGECASE_BROKEN
89261a6c 4289static struct tm *S_my_localtime (pTHX_ Time_t *tp)
a4323dee
MB		 4290{
4291 auto time_t T;
4292 auto struct tm *P;
4293
4294 /* No workarounds in the valid range */
4295 if (!tp || *tp < 0x7fff573f || *tp >= 0x80000000)
4296 return (localtime (tp));
4297
4298 /* This edge case is to workaround the undefined behaviour, where the
4299 * TIMEZONE makes the time go beyond the defined range.
4300 * gmtime (0x7fffffff) => 2038-01-19 03:14:07
4301 * If there is a negative offset in TZ, like MET-1METDST, some broken
4302 * implementations of localtime () (like AIX 5.2) barf with bogus
4303 * return values:
4304 * 0x7fffffff gmtime 2038-01-19 03:14:07
4305 * 0x7fffffff localtime 1901-12-13 21:45:51
4306 * 0x7fffffff mylocaltime 2038-01-19 04:14:07
4307 * 0x3c19137f gmtime 2001-12-13 20:45:51
4308 * 0x3c19137f localtime 2001-12-13 21:45:51
4309 * 0x3c19137f mylocaltime 2001-12-13 21:45:51
4310 * Given that legal timezones are typically between GMT-12 and GMT+12
4311 * we turn back the clock 23 hours before calling the localtime
4312 * function, and add those to the return value. This will never cause
3574fba9 4313 * day wrapping problems, since the edge case is Tue Jan *19*
a4323dee
MB		 4314 */
4315 T = *tp - 82800; /* 23 hour. allows up to GMT-23 */
4316 P = localtime (&T);
4317 P->tm_hour += 23;
4318 if (P->tm_hour >= 24) {
4319 P->tm_hour -= 24;
3574fba9
CW		 4320 P->tm_mday++; /* 18 -> 19 */
4321 P->tm_wday++; /* Mon -> Tue */
4322 P->tm_yday++; /* 18 -> 19 */
a4323dee
MB		 4323 }
4324 return (P);
4325} /* S_my_localtime */
4326#endif
4327
a0d0e21e
LW		 4328PP(pp_gmtime)
4329{
97aff369 4330 dVAR;
39644a26 4331 dSP;
a0d0e21e 4332 Time_t when;
bfed75c6 4333 const struct tm *tmbuf;
27da23d5
JH		 4334 static const char * const dayname[] =
4335 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4336 static const char * const monname[] =
4337 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4338 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
a0d0e21e
LW		 4339
4340 if (MAXARG < 1)
4341 (void)time(&when);
4342 else
cbdc8872 4343#ifdef BIG_TIME
4344 when = (Time_t)SvNVx(POPs);
4345#else
a0d0e21e 4346 when = (Time_t)SvIVx(POPs);
cbdc8872 4347#endif
a0d0e21e 4348
533c011a 4349 if (PL_op->op_type == OP_LOCALTIME)
a4323dee 4350#ifdef LOCALTIME_EDGECASE_BROKEN
89261a6c 4351 tmbuf = S_my_localtime(aTHX_ &when);
a4323dee 4352#else
a0d0e21e 4353 tmbuf = localtime(&when);
a4323dee 4354#endif
a0d0e21e
LW		 4355 else
4356 tmbuf = gmtime(&when);
4357
a0d0e21e 4358 if (GIMME != G_ARRAY) {
46fc3d4c 4359 SV *tsv;
9a5ff6d9
AB		 4360 EXTEND(SP, 1);
4361 EXTEND_MORTAL(1);
a0d0e21e
LW		 4362 if (!tmbuf)
4363 RETPUSHUNDEF;
be28567c 4364 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d",
f5a29b03
RB		 4365 dayname[tmbuf->tm_wday],
4366 monname[tmbuf->tm_mon],
be28567c
GS		 4367 tmbuf->tm_mday,
4368 tmbuf->tm_hour,
4369 tmbuf->tm_min,
4370 tmbuf->tm_sec,
4371 tmbuf->tm_year + 1900);
46fc3d4c 4372 PUSHs(sv_2mortal(tsv));
a0d0e21e
LW		 4373 }
4374 else if (tmbuf) {
9a5ff6d9
AB		 4375 EXTEND(SP, 9);
4376 EXTEND_MORTAL(9);
4377 PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec)));
c6419e06
JH		 4378 PUSHs(sv_2mortal(newSViv(tmbuf->tm_min)));
4379 PUSHs(sv_2mortal(newSViv(tmbuf->tm_hour)));
4380 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mday)));
4381 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mon)));
4382 PUSHs(sv_2mortal(newSViv(tmbuf->tm_year)));
4383 PUSHs(sv_2mortal(newSViv(tmbuf->tm_wday)));
4384 PUSHs(sv_2mortal(newSViv(tmbuf->tm_yday)));
4385 PUSHs(sv_2mortal(newSViv(tmbuf->tm_isdst)));
a0d0e21e
LW		 4386 }
4387 RETURN;
4388}
4389
4390PP(pp_alarm)
4391{
9cad6237 4392#ifdef HAS_ALARM
97aff369 4393 dVAR; dSP; dTARGET;
a0d0e21e 4394 int anum;
a0d0e21e
LW		 4395 anum = POPi;
4396 anum = alarm((unsigned int)anum);
4397 EXTEND(SP, 1);
4398 if (anum < 0)
4399 RETPUSHUNDEF;
c6419e06 4400 PUSHi(anum);
a0d0e21e
LW		 4401 RETURN;
4402#else
0322a713 4403 DIE(aTHX_ PL_no_func, "alarm");
a0d0e21e
LW		 4404#endif
4405}
4406
4407PP(pp_sleep)
4408{
97aff369 4409 dVAR; dSP; dTARGET;
a0d0e21e
LW		 4410 I32 duration;
4411 Time_t lasttime;
4412 Time_t when;
4413
4414 (void)time(&lasttime);
4415 if (MAXARG < 1)
76e3520e 4416 PerlProc_pause();
a0d0e21e
LW		 4417 else {
4418 duration = POPi;
76e3520e 4419 PerlProc_sleep((unsigned int)duration);
a0d0e21e
LW		 4420 }
4421 (void)time(&when);
4422 XPUSHi(when - lasttime);
4423 RETURN;
4424}
4425
4426/* Shared memory. */
c9f7ac20 4427/* Merged with some message passing. */
a0d0e21e 4428
a0d0e21e
LW		 4429PP(pp_shmwrite)
4430{
4431#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
97aff369 4432 dVAR; dSP; dMARK; dTARGET;
c9f7ac20
NC		 4433 const int op_type = PL_op->op_type;
4434 I32 value;
a0d0e21e 4435
c9f7ac20
NC		 4436 switch (op_type) {
4437 case OP_MSGSND:
4438 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4439 break;
4440 case OP_MSGRCV:
4441 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4442 break;
ca563b4e
NC		 4443 case OP_SEMOP:
4444 value = (I32)(do_semop(MARK, SP) >= 0);
4445 break;
c9f7ac20
NC		 4446 default:
4447 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4448 break;
4449 }
a0d0e21e 4450
a0d0e21e
LW		 4451 SP = MARK;
4452 PUSHi(value);
4453 RETURN;
4454#else
cea2e8a9 4455 return pp_semget();
a0d0e21e
LW		 4456#endif
4457}
4458
4459/* Semaphores. */
4460
4461PP(pp_semget)
4462{
4463#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
97aff369 4464 dVAR; dSP; dMARK; dTARGET;
0bcc34c2 4465 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 4466 SP = MARK;
4467 if (anum == -1)
4468 RETPUSHUNDEF;
4469 PUSHi(anum);
4470 RETURN;
4471#else
cea2e8a9 4472 DIE(aTHX_ "System V IPC is not implemented on this machine");
a0d0e21e
LW		 4473#endif
4474}
4475
4476PP(pp_semctl)
4477{
4478#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
97aff369 4479 dVAR; dSP; dMARK; dTARGET;
0bcc34c2 4480 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 4481 SP = MARK;
4482 if (anum == -1)
4483 RETSETUNDEF;
4484 if (anum != 0) {
4485 PUSHi(anum);
4486 }
4487 else {
8903cb82 4488 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e
LW		 4489 }
4490 RETURN;
4491#else
cea2e8a9 4492 return pp_semget();
a0d0e21e
LW		 4493#endif
4494}
4495
a0d0e21e
LW		 4496/* Get system info. */
4497
a0d0e21e
LW		 4498PP(pp_ghostent)
4499{
693762b4 4500#if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
97aff369 4501 dVAR; dSP;
533c011a 4502 I32 which = PL_op->op_type;
a0d0e21e
LW		 4503 register char **elem;
4504 register SV *sv;
dc45a647 4505#ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4506 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4507 struct hostent *gethostbyname(Netdb_name_t);
4508 struct hostent *gethostent(void);
a0d0e21e
LW		 4509#endif
4510 struct hostent *hent;
4511 unsigned long len;
4512
4513 EXTEND(SP, 10);
edd309b7 4514 if (which == OP_GHBYNAME) {
dc45a647 4515#ifdef HAS_GETHOSTBYNAME
0bcc34c2 4516 const char* const name = POPpbytex;
edd309b7 4517 hent = PerlSock_gethostbyname(name);
dc45a647 4518#else
cea2e8a9 4519 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
dc45a647 4520#endif
edd309b7 4521 }
a0d0e21e 4522 else if (which == OP_GHBYADDR) {
dc45a647 4523#ifdef HAS_GETHOSTBYADDR
0bcc34c2
AL		 4524 const int addrtype = POPi;
4525 SV * const addrsv = POPs;
a0d0e21e 4526 STRLEN addrlen;
5bf7026a 4527 Netdb_host_t addr = (Netdb_host_t) SvPVbyte(addrsv, addrlen);
a0d0e21e 4528
4599a1de 4529 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
dc45a647 4530#else
cea2e8a9 4531 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
dc45a647 4532#endif
a0d0e21e
LW		 4533 }
4534 else
4535#ifdef HAS_GETHOSTENT
6ad3d225 4536 hent = PerlSock_gethostent();
a0d0e21e 4537#else
cea2e8a9 4538 DIE(aTHX_ PL_no_sock_func, "gethostent");
a0d0e21e
LW		 4539#endif
4540
4541#ifdef HOST_NOT_FOUND
10bc17b6
JH		 4542 if (!hent) {
4543#ifdef USE_REENTRANT_API
4544# ifdef USE_GETHOSTENT_ERRNO
4545 h_errno = PL_reentrant_buffer->_gethostent_errno;
4546# endif
4547#endif
37038d91 4548 STATUS_UNIX_SET(h_errno);
10bc17b6 4549 }
a0d0e21e
LW		 4550#endif
4551
4552 if (GIMME != G_ARRAY) {
4553 PUSHs(sv = sv_newmortal());
4554 if (hent) {
4555 if (which == OP_GHBYNAME) {
fd0af264 4556 if (hent->h_addr)
4557 sv_setpvn(sv, hent->h_addr, hent->h_length);
a0d0e21e
LW		 4558 }
4559 else
4560 sv_setpv(sv, (char*)hent->h_name);
4561 }
4562 RETURN;
4563 }
4564
4565 if (hent) {
3280af22 4566 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e 4567 sv_setpv(sv, (char*)hent->h_name);
3280af22 4568 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 4569 for (elem = hent->h_aliases; elem && *elem; elem++) {
4570 sv_catpv(sv, *elem);
4571 if (elem[1])
396482e1 4572 sv_catpvs(sv, " ");
a0d0e21e 4573 }
3280af22 4574 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1e422769 4575 sv_setiv(sv, (IV)hent->h_addrtype);
3280af22 4576 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e 4577 len = hent->h_length;
1e422769 4578 sv_setiv(sv, (IV)len);
a0d0e21e
LW		 4579#ifdef h_addr
4580 for (elem = hent->h_addr_list; elem && *elem; elem++) {
3280af22 4581 XPUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 4582 sv_setpvn(sv, *elem, len);
4583 }
4584#else
6b88bc9c 4585 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
fd0af264 4586 if (hent->h_addr)
4587 sv_setpvn(sv, hent->h_addr, len);
a0d0e21e
LW		 4588#endif /* h_addr */
4589 }
4590 RETURN;
4591#else
cea2e8a9 4592 DIE(aTHX_ PL_no_sock_func, "gethostent");
a0d0e21e
LW		 4593#endif
4594}
4595
a0d0e21e
LW		 4596PP(pp_gnetent)
4597{
693762b4 4598#if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
97aff369 4599 dVAR; dSP;
533c011a 4600 I32 which = PL_op->op_type;
a0d0e21e
LW		 4601 register char **elem;
4602 register SV *sv;
dc45a647 4603#ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4604 struct netent *getnetbyaddr(Netdb_net_t, int);
4605 struct netent *getnetbyname(Netdb_name_t);
4606 struct netent *getnetent(void);
8ac85365 4607#endif
a0d0e21e
LW		 4608 struct netent *nent;
4609
edd309b7 4610 if (which == OP_GNBYNAME){
dc45a647 4611#ifdef HAS_GETNETBYNAME
0bcc34c2 4612 const char * const name = POPpbytex;
edd309b7 4613 nent = PerlSock_getnetbyname(name);
dc45a647 4614#else
cea2e8a9 4615 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
dc45a647 4616#endif
edd309b7 4617 }
a0d0e21e 4618 else if (which == OP_GNBYADDR) {
dc45a647 4619#ifdef HAS_GETNETBYADDR
0bcc34c2
AL		 4620 const int addrtype = POPi;
4621 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
76e3520e 4622 nent = PerlSock_getnetbyaddr(addr, addrtype);
dc45a647 4623#else
cea2e8a9 4624 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
dc45a647 4625#endif
a0d0e21e
LW		 4626 }
4627 else
dc45a647 4628#ifdef HAS_GETNETENT
76e3520e 4629 nent = PerlSock_getnetent();
dc45a647 4630#else
cea2e8a9 4631 DIE(aTHX_ PL_no_sock_func, "getnetent");
dc45a647 4632#endif
a0d0e21e 4633
10bc17b6
JH		 4634#ifdef HOST_NOT_FOUND
4635 if (!nent) {
4636#ifdef USE_REENTRANT_API
4637# ifdef USE_GETNETENT_ERRNO
4638 h_errno = PL_reentrant_buffer->_getnetent_errno;
4639# endif
4640#endif
37038d91 4641 STATUS_UNIX_SET(h_errno);
10bc17b6
JH		 4642 }
4643#endif
4644
a0d0e21e
LW		 4645 EXTEND(SP, 4);
4646 if (GIMME != G_ARRAY) {
4647 PUSHs(sv = sv_newmortal());
4648 if (nent) {
4649 if (which == OP_GNBYNAME)
1e422769 4650 sv_setiv(sv, (IV)nent->n_net);
a0d0e21e
LW		 4651 else
4652 sv_setpv(sv, nent->n_name);
4653 }
4654 RETURN;
4655 }
4656
4657 if (nent) {
3280af22 4658 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e 4659 sv_setpv(sv, nent->n_name);
3280af22 4660 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
c90c0ff4 4661 for (elem = nent->n_aliases; elem && *elem; elem++) {
a0d0e21e
LW		 4662 sv_catpv(sv, *elem);
4663 if (elem[1])
396482e1 4664 sv_catpvs(sv, " ");
a0d0e21e 4665 }
3280af22 4666 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1e422769 4667 sv_setiv(sv, (IV)nent->n_addrtype);
3280af22 4668 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1e422769 4669 sv_setiv(sv, (IV)nent->n_net);
a0d0e21e
LW		 4670 }
4671
4672 RETURN;
4673#else
cea2e8a9 4674 DIE(aTHX_ PL_no_sock_func, "getnetent");
a0d0e21e
LW		 4675#endif
4676}
4677
a0d0e21e
LW		 4678PP(pp_gprotoent)
4679{
693762b4 4680#if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
97aff369 4681 dVAR; dSP;
533c011a 4682 I32 which = PL_op->op_type;
a0d0e21e 4683 register char **elem;
301e8125 4684 register SV *sv;
dc45a647 4685#ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4686 struct protoent *getprotobyname(Netdb_name_t);
4687 struct protoent *getprotobynumber(int);
4688 struct protoent *getprotoent(void);
8ac85365 4689#endif
a0d0e21e
LW		 4690 struct protoent *pent;
4691
edd309b7 4692 if (which == OP_GPBYNAME) {
e5c9fcd0 4693#ifdef HAS_GETPROTOBYNAME
0bcc34c2 4694 const char* const name = POPpbytex;
edd309b7 4695 pent = PerlSock_getprotobyname(name);
e5c9fcd0 4696#else
cea2e8a9 4697 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
e5c9fcd0 4698#endif
edd309b7
JH		 4699 }
4700 else if (which == OP_GPBYNUMBER) {
e5c9fcd0 4701#ifdef HAS_GETPROTOBYNUMBER
0bcc34c2 4702 const int number = POPi;
edd309b7 4703 pent = PerlSock_getprotobynumber(number);
e5c9fcd0 4704#else
edd309b7 4705 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
e5c9fcd0 4706#endif
edd309b7 4707 }
a0d0e21e 4708 else
e5c9fcd0 4709#ifdef HAS_GETPROTOENT
6ad3d225 4710 pent = PerlSock_getprotoent();
e5c9fcd0 4711#else
cea2e8a9 4712 DIE(aTHX_ PL_no_sock_func, "getprotoent");
e5c9fcd0 4713#endif
a0d0e21e
LW		 4714
4715 EXTEND(SP, 3);
4716 if (GIMME != G_ARRAY) {
4717 PUSHs(sv = sv_newmortal());
4718 if (pent) {
4719 if (which == OP_GPBYNAME)
1e422769 4720 sv_setiv(sv, (IV)pent->p_proto);
a0d0e21e
LW		 4721 else
4722 sv_setpv(sv, pent->p_name);
4723 }
4724 RETURN;
4725 }
4726
4727 if (pent) {
3280af22 4728 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e 4729 sv_setpv(sv, pent->p_name);
3280af22 4730 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
c90c0ff4 4731 for (elem = pent->p_aliases; elem && *elem; elem++) {
a0d0e21e
LW		 4732 sv_catpv(sv, *elem);
4733 if (elem[1])
396482e1 4734 sv_catpvs(sv, " ");
a0d0e21e 4735 }
3280af22 4736 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1e422769 4737 sv_setiv(sv, (IV)pent->p_proto);
a0d0e21e
LW		 4738 }
4739
4740 RETURN;
4741#else
cea2e8a9 4742 DIE(aTHX_ PL_no_sock_func, "getprotoent");
a0d0e21e
LW		 4743#endif
4744}
4745
a0d0e21e
LW		 4746PP(pp_gservent)
4747{
693762b4 4748#if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
97aff369 4749 dVAR; dSP;
533c011a 4750 I32 which = PL_op->op_type;
a0d0e21e
LW		 4751 register char **elem;
4752 register SV *sv;
dc45a647 4753#ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4754 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
4755 struct servent *getservbyport(int, Netdb_name_t);
4756 struct servent *getservent(void);
8ac85365 4757#endif
a0d0e21e
LW		 4758 struct servent *sent;
4759
4760 if (which == OP_GSBYNAME) {
dc45a647 4761#ifdef HAS_GETSERVBYNAME
0bcc34c2
AL		 4762 const char * const proto = POPpbytex;
4763 const char * const name = POPpbytex;
bd61b366 4764 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
dc45a647 4765#else
cea2e8a9 4766 DIE(aTHX_ PL_no_sock_func, "getservbyname");
dc45a647 4767#endif
a0d0e21e
LW		 4768 }
4769 else if (which == OP_GSBYPORT) {
dc45a647 4770#ifdef HAS_GETSERVBYPORT
0bcc34c2 4771 const char * const proto = POPpbytex;
eb160463 4772 unsigned short port = (unsigned short)POPu;
36477c24 4773#ifdef HAS_HTONS
6ad3d225 4774 port = PerlSock_htons(port);
36477c24 4775#endif
bd61b366 4776 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
dc45a647 4777#else
cea2e8a9 4778 DIE(aTHX_ PL_no_sock_func, "getservbyport");
dc45a647 4779#endif
a0d0e21e
LW		 4780 }
4781 else
e5c9fcd0 4782#ifdef HAS_GETSERVENT
6ad3d225 4783 sent = PerlSock_getservent();
e5c9fcd0 4784#else
cea2e8a9 4785 DIE(aTHX_ PL_no_sock_func, "getservent");
e5c9fcd0 4786#endif
a0d0e21e
LW		 4787
4788 EXTEND(SP, 4);
4789 if (GIMME != G_ARRAY) {
4790 PUSHs(sv = sv_newmortal());
4791 if (sent) {
4792 if (which == OP_GSBYNAME) {
4793#ifdef HAS_NTOHS
6ad3d225 4794 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
a0d0e21e 4795#else
1e422769 4796 sv_setiv(sv, (IV)(sent->s_port));
a0d0e21e
LW		 4797#endif
4798 }
4799 else
4800 sv_setpv(sv, sent->s_name);
4801 }
4802 RETURN;
4803 }
4804
4805 if (sent) {
3280af22 4806 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e 4807 sv_setpv(sv, sent->s_name);
3280af22 4808 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
c90c0ff4 4809 for (elem = sent->s_aliases; elem && *elem; elem++) {
a0d0e21e
LW		 4810 sv_catpv(sv, *elem);
4811 if (elem[1])
396482e1 4812 sv_catpvs(sv, " ");
a0d0e21e 4813 }
3280af22 4814 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e 4815#ifdef HAS_NTOHS
76e3520e 4816 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
a0d0e21e 4817#else
1e422769 4818 sv_setiv(sv, (IV)(sent->s_port));
a0d0e21e 4819#endif
3280af22 4820 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 4821 sv_setpv(sv, sent->s_proto);
4822 }
4823
4824 RETURN;
4825#else
cea2e8a9 4826 DIE(aTHX_ PL_no_sock_func, "getservent");
a0d0e21e
LW		 4827#endif
4828}
4829
4830PP(pp_shostent)
4831{
693762b4 4832#ifdef HAS_SETHOSTENT
97aff369 4833 dVAR; dSP;
76e3520e 4834 PerlSock_sethostent(TOPi);
a0d0e21e
LW		 4835 RETSETYES;
4836#else
cea2e8a9 4837 DIE(aTHX_ PL_no_sock_func, "sethostent");
a0d0e21e
LW		 4838#endif
4839}
4840
4841PP(pp_snetent)
4842{
693762b4 4843#ifdef HAS_SETNETENT
97aff369 4844 dVAR; dSP;
76e3520e 4845 PerlSock_setnetent(TOPi);
a0d0e21e
LW		 4846 RETSETYES;
4847#else
cea2e8a9 4848 DIE(aTHX_ PL_no_sock_func, "setnetent");
a0d0e21e
LW		 4849#endif
4850}
4851
4852PP(pp_sprotoent)
4853{
693762b4 4854#ifdef HAS_SETPROTOENT
97aff369 4855 dVAR; dSP;
76e3520e 4856 PerlSock_setprotoent(TOPi);
a0d0e21e
LW		 4857 RETSETYES;
4858#else
cea2e8a9 4859 DIE(aTHX_ PL_no_sock_func, "setprotoent");
a0d0e21e
LW		 4860#endif
4861}
4862
4863PP(pp_sservent)
4864{
693762b4 4865#ifdef HAS_SETSERVENT
97aff369 4866 dVAR; dSP;
76e3520e 4867 PerlSock_setservent(TOPi);
a0d0e21e
LW		 4868 RETSETYES;
4869#else
cea2e8a9 4870 DIE(aTHX_ PL_no_sock_func, "setservent");
a0d0e21e
LW		 4871#endif
4872}
4873
4874PP(pp_ehostent)
4875{
693762b4 4876#ifdef HAS_ENDHOSTENT
97aff369 4877 dVAR; dSP;
76e3520e 4878 PerlSock_endhostent();
924508f0 4879 EXTEND(SP,1);
a0d0e21e
LW		 4880 RETPUSHYES;
4881#else
cea2e8a9 4882 DIE(aTHX_ PL_no_sock_func, "endhostent");
a0d0e21e
LW		 4883#endif
4884}
4885
4886PP(pp_enetent)
4887{
693762b4 4888#ifdef HAS_ENDNETENT
97aff369 4889 dVAR; dSP;
76e3520e 4890 PerlSock_endnetent();
924508f0 4891 EXTEND(SP,1);
a0d0e21e
LW		 4892 RETPUSHYES;
4893#else
cea2e8a9 4894 DIE(aTHX_ PL_no_sock_func, "endnetent");
a0d0e21e
LW		 4895#endif
4896}
4897
4898PP(pp_eprotoent)
4899{
693762b4 4900#ifdef HAS_ENDPROTOENT
97aff369 4901 dVAR; dSP;
76e3520e 4902 PerlSock_endprotoent();
924508f0 4903 EXTEND(SP,1);
a0d0e21e
LW		 4904 RETPUSHYES;
4905#else
cea2e8a9 4906 DIE(aTHX_ PL_no_sock_func, "endprotoent");
a0d0e21e
LW		 4907#endif
4908}
4909
4910PP(pp_eservent)
4911{
693762b4 4912#ifdef HAS_ENDSERVENT
97aff369 4913 dVAR; dSP;
76e3520e 4914 PerlSock_endservent();
924508f0 4915 EXTEND(SP,1);
a0d0e21e
LW		 4916 RETPUSHYES;
4917#else
cea2e8a9 4918 DIE(aTHX_ PL_no_sock_func, "endservent");
a0d0e21e
LW		 4919#endif
4920}
4921
a0d0e21e
LW		 4922PP(pp_gpwent)
4923{
0994c4d0 4924#ifdef HAS_PASSWD
97aff369 4925 dVAR; dSP;
533c011a 4926 I32 which = PL_op->op_type;
a0d0e21e 4927 register SV *sv;
e3aefe8d 4928 struct passwd *pwent = NULL;
301e8125 4929 /*
bcf53261
JH		 4930 * We currently support only the SysV getsp* shadow password interface.
4931 * The interface is declared in <shadow.h> and often one needs to link
4932 * with -lsecurity or some such.
4933 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
4934 * (and SCO?)
4935 *
4936 * AIX getpwnam() is clever enough to return the encrypted password
4937 * only if the caller (euid?) is root.
4938 *
e549f1c5 4939 * There are at least three other shadow password APIs. Many platforms
bcf53261
JH		 4940 * seem to contain more than one interface for accessing the shadow
4941 * password databases, possibly for compatibility reasons.
3813c136 4942 * The getsp*() is by far he simplest one, the other two interfaces
bcf53261
JH		 4943 * are much more complicated, but also very similar to each other.
4944 *
4945 * <sys/types.h>
4946 * <sys/security.h>
4947 * <prot.h>
4948 * struct pr_passwd *getprpw*();
4949 * The password is in
3813c136
JH		 4950 * char getprpw*(...).ufld.fd_encrypt[]
4951 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
bcf53261
JH		 4952 *
4953 * <sys/types.h>
4954 * <sys/security.h>
4955 * <prot.h>
4956 * struct es_passwd *getespw*();
4957 * The password is in
4958 * char *(getespw*(...).ufld.fd_encrypt)
3813c136 4959 * Mention HAS_GETESPWNAM here so that Configure probes for it.
bcf53261 4960 *
e1920a95 4961 * <userpw.h> (AIX)
e549f1c5
JH		 4962 * struct userpw *getuserpw();
4963 * The password is in
4964 * char *(getuserpw(...)).spw_upw_passwd
4965 * (but the de facto standard getpwnam() should work okay)
4966 *
3813c136 4967 * Mention I_PROT here so that Configure probes for it.
bcf53261
JH		 4968 *
4969 * In HP-UX for getprpw*() the manual page claims that one should include
4970 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
4971 * if one includes <shadow.h> as that includes <hpsecurity.h>,
4972 * and pp_sys.c already includes <shadow.h> if there is such.
3813c136
JH		 4973 *
4974 * Note that <sys/security.h> is already probed for, but currently
4975 * it is only included in special cases.
301e8125 4976 *
bcf53261
JH		 4977 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
4978 * be preferred interface, even though also the getprpw*() interface
4979 * is available) one needs to link with -lsecurity -ldb -laud -lm.
3813c136
JH		 4980 * One also needs to call set_auth_parameters() in main() before
4981 * doing anything else, whether one is using getespw*() or getprpw*().
4982 *
4983 * Note that accessing the shadow databases can be magnitudes
4984 * slower than accessing the standard databases.
bcf53261
JH		 4985 *
4986 * --jhi
4987 */
a0d0e21e 4988
9e5f0c48
JH		 4989# if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
4990 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
4991 * the pw_comment is left uninitialized. */
4992 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
4993# endif
4994
e3aefe8d
JH		 4995 switch (which) {
4996 case OP_GPWNAM:
edd309b7 4997 {
0bcc34c2 4998 const char* const name = POPpbytex;
edd309b7
JH		 4999 pwent = getpwnam(name);
5000 }
5001 break;
e3aefe8d 5002 case OP_GPWUID:
edd309b7
JH		 5003 {
5004 Uid_t uid = POPi;
5005 pwent = getpwuid(uid);
5006 }
e3aefe8d
JH		 5007 break;
5008 case OP_GPWENT:
1883634f 5009# ifdef HAS_GETPWENT
e3aefe8d 5010 pwent = getpwent();
faea9016
IRC		 5011#ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5012 if (pwent) pwent = getpwnam(pwent->pw_name);
5013#endif
1883634f 5014# else
a45d1c96 5015 DIE(aTHX_ PL_no_func, "getpwent");
1883634f 5016# endif
e3aefe8d
JH		 5017 break;
5018 }
8c0bfa08 5019
a0d0e21e
LW		 5020 EXTEND(SP, 10);
5021 if (GIMME != G_ARRAY) {
5022 PUSHs(sv = sv_newmortal());
5023 if (pwent) {
5024 if (which == OP_GPWNAM)
1883634f 5025# if Uid_t_sign <= 0
1e422769 5026 sv_setiv(sv, (IV)pwent->pw_uid);
1883634f 5027# else
23dcd6c8 5028 sv_setuv(sv, (UV)pwent->pw_uid);
1883634f 5029# endif
a0d0e21e
LW		 5030 else
5031 sv_setpv(sv, pwent->pw_name);
5032 }
5033 RETURN;
5034 }
5035
5036 if (pwent) {
3280af22 5037 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e 5038 sv_setpv(sv, pwent->pw_name);
6ee623d5 5039
3280af22 5040 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
3813c136
JH		 5041 SvPOK_off(sv);
5042 /* If we have getspnam(), we try to dig up the shadow
5043 * password. If we are underprivileged, the shadow
5044 * interface will set the errno to EACCES or similar,
5045 * and return a null pointer. If this happens, we will
5046 * use the dummy password (usually "*" or "x") from the
5047 * standard password database.
5048 *
5049 * In theory we could skip the shadow call completely
5050 * if euid != 0 but in practice we cannot know which
5051 * security measures are guarding the shadow databases
5052 * on a random platform.
5053 *
5054 * Resist the urge to use additional shadow interfaces.
5055 * Divert the urge to writing an extension instead.
5056 *
5057 * --jhi */
e549f1c5
JH		 5058 /* Some AIX setups falsely(?) detect some getspnam(), which
5059 * has a different API than the Solaris/IRIX one. */
5060# if defined(HAS_GETSPNAM) && !defined(_AIX)
3813c136 5061 {
0bcc34c2
AL		 5062 const int saverrno = errno;
5063 const struct spwd * const spwent = getspnam(pwent->pw_name);
5064 /* Save and restore errno so that
3813c136
JH		 5065 * underprivileged attempts seem
5066 * to have never made the unsccessful
5067 * attempt to retrieve the shadow password. */
3813c136
JH		 5068 errno = saverrno;
5069 if (spwent && spwent->sp_pwdp)
5070 sv_setpv(sv, spwent->sp_pwdp);
5071 }
f1066039 5072# endif
e020c87d 5073# ifdef PWPASSWD
3813c136
JH		 5074 if (!SvPOK(sv)) /* Use the standard password, then. */
5075 sv_setpv(sv, pwent->pw_passwd);
e020c87d 5076# endif
3813c136 5077
1883634f 5078# ifndef INCOMPLETE_TAINTS
3813c136
JH		 5079 /* passwd is tainted because user himself can diddle with it.
5080 * admittedly not much and in a very limited way, but nevertheless. */
2959b6e3 5081 SvTAINTED_on(sv);
1883634f 5082# endif
6ee623d5 5083
3280af22 5084 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1883634f 5085# if Uid_t_sign <= 0
1e422769 5086 sv_setiv(sv, (IV)pwent->pw_uid);
1883634f 5087# else
23dcd6c8 5088 sv_setuv(sv, (UV)pwent->pw_uid);
1883634f 5089# endif
6ee623d5 5090
3280af22 5091 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1883634f 5092# if Uid_t_sign <= 0
1e422769 5093 sv_setiv(sv, (IV)pwent->pw_gid);
1883634f 5094# else
23dcd6c8 5095 sv_setuv(sv, (UV)pwent->pw_gid);
1883634f 5096# endif
3813c136
JH		 5097 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5098 * because of the poor interface of the Perl getpw*(),
5099 * not because there's some standard/convention saying so.
5100 * A better interface would have been to return a hash,
5101 * but we are accursed by our history, alas. --jhi. */
3280af22 5102 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1883634f 5103# ifdef PWCHANGE
1e422769 5104 sv_setiv(sv, (IV)pwent->pw_change);
6ee623d5 5105# else
1883634f
JH		 5106# ifdef PWQUOTA
5107 sv_setiv(sv, (IV)pwent->pw_quota);
5108# else
a1757be1 5109# ifdef PWAGE
a0d0e21e 5110 sv_setpv(sv, pwent->pw_age);
a1757be1 5111# endif
6ee623d5
GS		 5112# endif
5113# endif
6ee623d5 5114
3813c136
JH		 5115 /* pw_class and pw_comment are mutually exclusive--.
5116 * see the above note for pw_change, pw_quota, and pw_age. */
3280af22 5117 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1883634f 5118# ifdef PWCLASS
a0d0e21e 5119 sv_setpv(sv, pwent->pw_class);
1883634f
JH		 5120# else
5121# ifdef PWCOMMENT
a0d0e21e 5122 sv_setpv(sv, pwent->pw_comment);
1883634f 5123# endif
6ee623d5 5124# endif
6ee623d5 5125
3280af22 5126 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1883634f 5127# ifdef PWGECOS
a0d0e21e 5128 sv_setpv(sv, pwent->pw_gecos);
1883634f
JH		 5129# endif
5130# ifndef INCOMPLETE_TAINTS
d2719217 5131 /* pw_gecos is tainted because user himself can diddle with it. */
fb73857a 5132 SvTAINTED_on(sv);
1883634f 5133# endif
6ee623d5 5134
3280af22 5135 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e 5136 sv_setpv(sv, pwent->pw_dir);
6ee623d5 5137
3280af22 5138 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e 5139 sv_setpv(sv, pwent->pw_shell);
1883634f 5140# ifndef INCOMPLETE_TAINTS
4602f195
JH		 5141 /* pw_shell is tainted because user himself can diddle with it. */
5142 SvTAINTED_on(sv);
1883634f 5143# endif
6ee623d5 5144
1883634f 5145# ifdef PWEXPIRE
6b88bc9c 5146 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1e422769 5147 sv_setiv(sv, (IV)pwent->pw_expire);
1883634f 5148# endif
a0d0e21e
LW		 5149 }
5150 RETURN;
5151#else
af51a00e 5152 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5153#endif
5154}
5155
5156PP(pp_spwent)
5157{
d493b042 5158#if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
97aff369 5159 dVAR; dSP;
a0d0e21e
LW		 5160 setpwent();
5161 RETPUSHYES;
5162#else
cea2e8a9 5163 DIE(aTHX_ PL_no_func, "setpwent");
a0d0e21e
LW		 5164#endif
5165}
5166
5167PP(pp_epwent)
5168{
28e8609d 5169#if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
97aff369 5170 dVAR; dSP;
a0d0e21e
LW		 5171 endpwent();
5172 RETPUSHYES;
5173#else
cea2e8a9 5174 DIE(aTHX_ PL_no_func, "endpwent");
a0d0e21e
LW		 5175#endif
5176}
5177
a0d0e21e
LW		 5178PP(pp_ggrent)
5179{
0994c4d0 5180#ifdef HAS_GROUP
97aff369 5181 dVAR; dSP;
6136c704
AL		 5182 const I32 which = PL_op->op_type;
5183 const struct group *grent;
a0d0e21e 5184
edd309b7 5185 if (which == OP_GGRNAM) {
0bcc34c2 5186 const char* const name = POPpbytex;
6136c704 5187 grent = (const struct group *)getgrnam(name);
edd309b7
JH		 5188 }
5189 else if (which == OP_GGRGID) {
0bcc34c2 5190 const Gid_t gid = POPi;
6136c704 5191 grent = (const struct group *)getgrgid(gid);
edd309b7 5192 }
a0d0e21e 5193 else
0994c4d0 5194#ifdef HAS_GETGRENT
a0d0e21e 5195 grent = (struct group *)getgrent();
0994c4d0
JH		 5196#else
5197 DIE(aTHX_ PL_no_func, "getgrent");
5198#endif
a0d0e21e
LW		 5199
5200 EXTEND(SP, 4);
5201 if (GIMME != G_ARRAY) {
6136c704
AL		 5202 SV * const sv = sv_newmortal();
5203
5204 PUSHs(sv);
a0d0e21e
LW		 5205 if (grent) {
5206 if (which == OP_GGRNAM)
1e422769 5207 sv_setiv(sv, (IV)grent->gr_gid);
a0d0e21e
LW		 5208 else
5209 sv_setpv(sv, grent->gr_name);
5210 }
5211 RETURN;
5212 }
5213
5214 if (grent) {
6136c704
AL		 5215 SV *sv;
5216 char **elem;
3280af22 5217 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
a0d0e21e 5218 sv_setpv(sv, grent->gr_name);
28e8609d 5219
3280af22 5220 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
28e8609d 5221#ifdef GRPASSWD
a0d0e21e 5222 sv_setpv(sv, grent->gr_passwd);
28e8609d
JH		 5223#endif
5224
3280af22 5225 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1e422769 5226 sv_setiv(sv, (IV)grent->gr_gid);
28e8609d 5227
5b56e7c5 5228#if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
3280af22 5229 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
3d7e8424
JH		 5230 /* In UNICOS/mk (_CRAYMPP) the multithreading
5231 * versions (getgrnam_r, getgrgid_r)
5232 * seem to return an illegal pointer
5233 * as the group members list, gr_mem.
5234 * getgrent() doesn't even have a _r version
5235 * but the gr_mem is poisonous anyway.
5236 * So yes, you cannot get the list of group
5237 * members if building multithreaded in UNICOS/mk. */
c90c0ff4 5238 for (elem = grent->gr_mem; elem && *elem; elem++) {
a0d0e21e
LW		 5239 sv_catpv(sv, *elem);
5240 if (elem[1])
396482e1 5241 sv_catpvs(sv, " ");
a0d0e21e 5242 }
3d7e8424 5243#endif
a0d0e21e
LW		 5244 }
5245
5246 RETURN;
5247#else
af51a00e 5248 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5249#endif
5250}
5251
5252PP(pp_sgrent)
5253{
28e8609d 5254#if defined(HAS_GROUP) && defined(HAS_SETGRENT)
97aff369 5255 dVAR; dSP;
a0d0e21e
LW		 5256 setgrent();
5257 RETPUSHYES;
5258#else
cea2e8a9 5259 DIE(aTHX_ PL_no_func, "setgrent");
a0d0e21e
LW		 5260#endif
5261}
5262
5263PP(pp_egrent)
5264{
28e8609d 5265#if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
97aff369 5266 dVAR; dSP;
a0d0e21e
LW		 5267 endgrent();
5268 RETPUSHYES;
5269#else
cea2e8a9 5270 DIE(aTHX_ PL_no_func, "endgrent");
a0d0e21e
LW		 5271#endif
5272}
5273
5274PP(pp_getlogin)
5275{
a0d0e21e 5276#ifdef HAS_GETLOGIN
97aff369 5277 dVAR; dSP; dTARGET;
a0d0e21e
LW		 5278 char *tmps;
5279 EXTEND(SP, 1);
76e3520e 5280 if (!(tmps = PerlProc_getlogin()))
a0d0e21e
LW		 5281 RETPUSHUNDEF;
5282 PUSHp(tmps, strlen(tmps));
5283 RETURN;
5284#else
cea2e8a9 5285 DIE(aTHX_ PL_no_func, "getlogin");
a0d0e21e
LW		 5286#endif
5287}
5288
5289/* Miscellaneous. */
5290
5291PP(pp_syscall)
5292{
d2719217 5293#ifdef HAS_SYSCALL
97aff369 5294 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 5295 register I32 items = SP - MARK;
5296 unsigned long a[20];
5297 register I32 i = 0;
5298 I32 retval = -1;
5299
3280af22 5300 if (PL_tainting) {
a0d0e21e 5301 while (++MARK <= SP) {
bbce6d69 5302 if (SvTAINTED(*MARK)) {
5303 TAINT;
5304 break;
5305 }
a0d0e21e
LW		 5306 }
5307 MARK = ORIGMARK;
5308 TAINT_PROPER("syscall");
5309 }
5310
5311 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5312 * or where sizeof(long) != sizeof(char*). But such machines will
5313 * not likely have syscall implemented either, so who cares?
5314 */
5315 while (++MARK <= SP) {
5316 if (SvNIOK(*MARK) || !i)
5317 a[i++] = SvIV(*MARK);
3280af22 5318 else if (*MARK == &PL_sv_undef)
748a9306 5319 a[i++] = 0;
301e8125 5320 else
8b6b16e7 5321 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
a0d0e21e
LW		 5322 if (i > 15)
5323 break;
5324 }
5325 switch (items) {
5326 default:
cea2e8a9 5327 DIE(aTHX_ "Too many args to syscall");
a0d0e21e 5328 case 0:
cea2e8a9 5329 DIE(aTHX_ "Too few args to syscall");
a0d0e21e
LW		 5330 case 1:
5331 retval = syscall(a[0]);
5332 break;
5333 case 2:
5334 retval = syscall(a[0],a[1]);
5335 break;
5336 case 3:
5337 retval = syscall(a[0],a[1],a[2]);
5338 break;
5339 case 4:
5340 retval = syscall(a[0],a[1],a[2],a[3]);
5341 break;
5342 case 5:
5343 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5344 break;
5345 case 6:
5346 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5347 break;
5348 case 7:
5349 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5350 break;
5351 case 8:
5352 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5353 break;
5354#ifdef atarist
5355 case 9:
5356 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
5357 break;
5358 case 10:
5359 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
5360 break;
5361 case 11:
5362 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5363 a[10]);
5364 break;
5365 case 12:
5366 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5367 a[10],a[11]);
5368 break;
5369 case 13:
5370 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5371 a[10],a[11],a[12]);
5372 break;
5373 case 14:
5374 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5375 a[10],a[11],a[12],a[13]);
5376 break;
5377#endif /* atarist */
5378 }
5379 SP = ORIGMARK;
5380 PUSHi(retval);
5381 RETURN;
5382#else
cea2e8a9 5383 DIE(aTHX_ PL_no_func, "syscall");
a0d0e21e
LW		 5384#endif
5385}
5386
ff68c719 5387#ifdef FCNTL_EMULATE_FLOCK
301e8125 5388
ff68c719 5389/* XXX Emulate flock() with fcntl().
5390 What's really needed is a good file locking module.
5391*/
5392
cea2e8a9
GS		 5393static int
5394fcntl_emulate_flock(int fd, int operation)
ff68c719 5395{
5396 struct flock flock;
301e8125 5397
ff68c719 5398 switch (operation & ~LOCK_NB) {
5399 case LOCK_SH:
5400 flock.l_type = F_RDLCK;
5401 break;
5402 case LOCK_EX:
5403 flock.l_type = F_WRLCK;
5404 break;
5405 case LOCK_UN:
5406 flock.l_type = F_UNLCK;
5407 break;
5408 default:
5409 errno = EINVAL;
5410 return -1;
5411 }
5412 flock.l_whence = SEEK_SET;
d9b3e12d 5413 flock.l_start = flock.l_len = (Off_t)0;
301e8125 5414
ff68c719 5415 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5416}
5417
5418#endif /* FCNTL_EMULATE_FLOCK */
5419
5420#ifdef LOCKF_EMULATE_FLOCK
16d20bd9
AD		 5421
5422/* XXX Emulate flock() with lockf(). This is just to increase
5423 portability of scripts. The calls are not completely
5424 interchangeable. What's really needed is a good file
5425 locking module.
5426*/
5427
76c32331 5428/* The lockf() constants might have been defined in <unistd.h>.
5429 Unfortunately, <unistd.h> causes troubles on some mixed
5430 (BSD/POSIX) systems, such as SunOS 4.1.3.
16d20bd9
AD		 5431
5432 Further, the lockf() constants aren't POSIX, so they might not be
5433 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5434 just stick in the SVID values and be done with it. Sigh.
5435*/
5436
5437# ifndef F_ULOCK
5438# define F_ULOCK 0 /* Unlock a previously locked region */
5439# endif
5440# ifndef F_LOCK
5441# define F_LOCK 1 /* Lock a region for exclusive use */
5442# endif
5443# ifndef F_TLOCK
5444# define F_TLOCK 2 /* Test and lock a region for exclusive use */
5445# endif
5446# ifndef F_TEST
5447# define F_TEST 3 /* Test a region for other processes locks */
5448# endif
5449
cea2e8a9
GS		 5450static int
5451lockf_emulate_flock(int fd, int operation)
16d20bd9
AD		 5452{
5453 int i;
0bcc34c2 5454 const int save_errno = errno;
84902520
TB		 5455 Off_t pos;
5456
5457 /* flock locks entire file so for lockf we need to do the same */
6ad3d225 5458 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
84902520 5459 if (pos > 0) /* is seekable and needs to be repositioned */
6ad3d225 5460 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
08b714dd 5461 pos = -1; /* seek failed, so don't seek back afterwards */
84902520
TB		 5462 errno = save_errno;
5463
16d20bd9
AD		 5464 switch (operation) {
5465
5466 /* LOCK_SH - get a shared lock */
5467 case LOCK_SH:
5468 /* LOCK_EX - get an exclusive lock */
5469 case LOCK_EX:
5470 i = lockf (fd, F_LOCK, 0);
5471 break;
5472
5473 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5474 case LOCK_SH|LOCK_NB:
5475 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5476 case LOCK_EX|LOCK_NB:
5477 i = lockf (fd, F_TLOCK, 0);
5478 if (i == -1)
5479 if ((errno == EAGAIN) || (errno == EACCES))
5480 errno = EWOULDBLOCK;
5481 break;
5482
ff68c719 5483 /* LOCK_UN - unlock (non-blocking is a no-op) */
16d20bd9 5484 case LOCK_UN:
ff68c719 5485 case LOCK_UN|LOCK_NB:
16d20bd9
AD		 5486 i = lockf (fd, F_ULOCK, 0);
5487 break;
5488
5489 /* Default - can't decipher operation */
5490 default:
5491 i = -1;
5492 errno = EINVAL;
5493 break;
5494 }
84902520
TB		 5495
5496 if (pos > 0) /* need to restore position of the handle */
6ad3d225 5497 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
84902520 5498
16d20bd9
AD		 5499 return (i);
5500}
ff68c719 5501
5502#endif /* LOCKF_EMULATE_FLOCK */
241d1a3b
NC		 5503
5504/*
5505 * Local variables:
5506 * c-indentation-style: bsd
5507 * c-basic-offset: 4
5508 * indent-tabs-mode: t
5509 * End:
5510 *
37442d52
RGS		 5511 * ex: set ts=8 sts=4 sw=4 noet:
5512 */
Unnamed repository; edit this file 'description' to name the repository.