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Avoid accessing free()d memory when calling reset in one thread, after
[perl5.git] / pp_sys.c
CommitLineData
a0d0e21e
LW		 1/* pp_sys.c
2 *
fdf8c088
RGS		 3 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 * 2004, 2005, 2006, 2007 by Larry Wall and others
a0d0e21e
LW		 5 *
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8 *
9 */
10
11/*
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
16 */
17
166f8a29
DM		 18/* This file contains system pp ("push/pop") functions that
19 * execute the opcodes that make up a perl program. A typical pp function
20 * expects to find its arguments on the stack, and usually pushes its
21 * results onto the stack, hence the 'pp' terminology. Each OP structure
22 * contains a pointer to the relevant pp_foo() function.
23 *
24 * By 'system', we mean ops which interact with the OS, such as pp_open().
25 */
26
a0d0e21e 27#include "EXTERN.h"
864dbfa3 28#define PERL_IN_PP_SYS_C
a0d0e21e
LW		 29#include "perl.h"
30
f1066039
JH		 31#ifdef I_SHADOW
32/* Shadow password support for solaris - pdo@cs.umd.edu
33 * Not just Solaris: at least HP-UX, IRIX, Linux.
3813c136
JH		 34 * The API is from SysV.
35 *
36 * There are at least two more shadow interfaces,
37 * see the comments in pp_gpwent().
38 *
39 * --jhi */
40# ifdef __hpux__
c529f79d 41/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
301e8125 42 * and another MAXINT from "perl.h" <- <sys/param.h>. */
3813c136
JH		 43# undef MAXINT
44# endif
45# include <shadow.h>
8c0bfa08
PB		 46#endif
47
76c32331 48#ifdef I_SYS_WAIT
49# include <sys/wait.h>
50#endif
51
52#ifdef I_SYS_RESOURCE
53# include <sys/resource.h>
16d20bd9 54#endif
a0d0e21e 55
2986a63f
JH		 56#ifdef NETWARE
57NETDB_DEFINE_CONTEXT
58#endif
59
a0d0e21e 60#ifdef HAS_SELECT
1e743fda
JH		 61# ifdef I_SYS_SELECT
62# include <sys/select.h>
63# endif
a0d0e21e 64#endif
a0d0e21e 65
dc45a647
MB		 66/* XXX Configure test needed.
67 h_errno might not be a simple 'int', especially for multi-threaded
5ff3f7a4
GS		 68 applications, see "extern int errno in perl.h". Creating such
69 a test requires taking into account the differences between
70 compiling multithreaded and singlethreaded ($ccflags et al).
71 HOST_NOT_FOUND is typically defined in <netdb.h>.
dc45a647 72*/
cb50131a 73#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
a0d0e21e
LW		 74extern int h_errno;
75#endif
76
77#ifdef HAS_PASSWD
78# ifdef I_PWD
79# include <pwd.h>
80# else
fd8cd3a3 81# if !defined(VMS)
20ce7b12
GS		 82 struct passwd *getpwnam (char *);
83 struct passwd *getpwuid (Uid_t);
fd8cd3a3 84# endif
a0d0e21e 85# endif
28e8609d 86# ifdef HAS_GETPWENT
10bc17b6 87#ifndef getpwent
20ce7b12 88 struct passwd *getpwent (void);
c2a8f790 89#elif defined (VMS) && defined (my_getpwent)
9fa802f3 90 struct passwd *Perl_my_getpwent (pTHX);
10bc17b6 91#endif
28e8609d 92# endif
a0d0e21e
LW		 93#endif
94
95#ifdef HAS_GROUP
96# ifdef I_GRP
97# include <grp.h>
98# else
20ce7b12
GS		 99 struct group *getgrnam (char *);
100 struct group *getgrgid (Gid_t);
a0d0e21e 101# endif
28e8609d 102# ifdef HAS_GETGRENT
10bc17b6 103#ifndef getgrent
20ce7b12 104 struct group *getgrent (void);
10bc17b6 105#endif
28e8609d 106# endif
a0d0e21e
LW		 107#endif
108
109#ifdef I_UTIME
3730b96e 110# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 111# include <sys/utime.h>
112# else
113# include <utime.h>
114# endif
a0d0e21e 115#endif
a0d0e21e 116
cbdc8872 117#ifdef HAS_CHSIZE
cd52b7b2 118# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
119# undef my_chsize
120# endif
72cc7e2a 121# define my_chsize PerlLIO_chsize
27da23d5
JH		 122#else
123# ifdef HAS_TRUNCATE
124# define my_chsize PerlLIO_chsize
125# else
126I32 my_chsize(int fd, Off_t length);
127# endif
cbdc8872 128#endif
129
ff68c719 130#ifdef HAS_FLOCK
131# define FLOCK flock
132#else /* no flock() */
133
36477c24 134 /* fcntl.h might not have been included, even if it exists, because
135 the current Configure only sets I_FCNTL if it's needed to pick up
136 the *_OK constants. Make sure it has been included before testing
137 the fcntl() locking constants. */
138# if defined(HAS_FCNTL) && !defined(I_FCNTL)
139# include <fcntl.h>
140# endif
141
9d9004a9 142# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
ff68c719 143# define FLOCK fcntl_emulate_flock
144# define FCNTL_EMULATE_FLOCK
145# else /* no flock() or fcntl(F_SETLK,...) */
146# ifdef HAS_LOCKF
147# define FLOCK lockf_emulate_flock
148# define LOCKF_EMULATE_FLOCK
149# endif /* lockf */
150# endif /* no flock() or fcntl(F_SETLK,...) */
151
152# ifdef FLOCK
20ce7b12 153 static int FLOCK (int, int);
ff68c719 154
155 /*
156 * These are the flock() constants. Since this sytems doesn't have
157 * flock(), the values of the constants are probably not available.
158 */
159# ifndef LOCK_SH
160# define LOCK_SH 1
161# endif
162# ifndef LOCK_EX
163# define LOCK_EX 2
164# endif
165# ifndef LOCK_NB
166# define LOCK_NB 4
167# endif
168# ifndef LOCK_UN
169# define LOCK_UN 8
170# endif
171# endif /* emulating flock() */
172
173#endif /* no flock() */
55497cff 174
85ab1d1d 175#define ZBTLEN 10
27da23d5 176static const char zero_but_true[ZBTLEN + 1] = "0 but true";
85ab1d1d 177
5ff3f7a4
GS		 178#if defined(I_SYS_ACCESS) && !defined(R_OK)
179# include <sys/access.h>
180#endif
181
c529f79d
CB		 182#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
183# define FD_CLOEXEC 1 /* NeXT needs this */
184#endif
185
a4af207c
JH		 186#include "reentr.h"
187
9cffb111
OS		 188#ifdef __Lynx__
189/* Missing protos on LynxOS */
190void sethostent(int);
191void endhostent(void);
192void setnetent(int);
193void endnetent(void);
194void setprotoent(int);
195void endprotoent(void);
196void setservent(int);
197void endservent(void);
198#endif
199
faee0e31 200#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
5ff3f7a4 201
a4323dee
MB		 202/* AIX 5.2 and below use mktime for localtime, and defines the edge case
203 * for time 0x7fffffff to be valid only in UTC. AIX 5.3 provides localtime64
204 * available in the 32bit environment, which could warrant Configure
205 * checks in the future.
206 */
207#ifdef _AIX
208#define LOCALTIME_EDGECASE_BROKEN
209#endif
210
5ff3f7a4
GS		 211/* F_OK unused: if stat() cannot find it... */
212
d7558cad 213#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
c955f117 214 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
d7558cad 215# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
5ff3f7a4
GS		 216#endif
217
d7558cad 218#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
3813c136 219# ifdef I_SYS_SECURITY
5ff3f7a4
GS		 220# include <sys/security.h>
221# endif
c955f117
JH		 222# ifdef ACC_SELF
223 /* HP SecureWare */
d7558cad 224# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
c955f117
JH		 225# else
226 /* SCO */
d7558cad 227# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
c955f117 228# endif
5ff3f7a4
GS		 229#endif
230
d7558cad 231#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
c955f117 232 /* AIX */
d7558cad 233# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
5ff3f7a4
GS		 234#endif
235
d7558cad
NC		 236
237#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
327c3667
GS		 238 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
239 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
5ff3f7a4 240/* The Hard Way. */
327c3667 241STATIC int
7f4774ae 242S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 243{
c4420975
AL		 244 const Uid_t ruid = getuid();
245 const Uid_t euid = geteuid();
246 const Gid_t rgid = getgid();
247 const Gid_t egid = getegid();
5ff3f7a4
GS		 248 int res;
249
146174a9 250 LOCK_CRED_MUTEX;
5ff3f7a4 251#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
cea2e8a9 252 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 253#else
254#ifdef HAS_SETREUID
255 if (setreuid(euid, ruid))
256#else
257#ifdef HAS_SETRESUID
258 if (setresuid(euid, ruid, (Uid_t)-1))
259#endif
260#endif
cea2e8a9 261 Perl_croak(aTHX_ "entering effective uid failed");
5ff3f7a4
GS		 262#endif
263
264#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
cea2e8a9 265 Perl_croak(aTHX_ "switching effective gid is not implemented");
5ff3f7a4
GS		 266#else
267#ifdef HAS_SETREGID
268 if (setregid(egid, rgid))
269#else
270#ifdef HAS_SETRESGID
271 if (setresgid(egid, rgid, (Gid_t)-1))
272#endif
273#endif
cea2e8a9 274 Perl_croak(aTHX_ "entering effective gid failed");
5ff3f7a4
GS		 275#endif
276
277 res = access(path, mode);
278
279#ifdef HAS_SETREUID
280 if (setreuid(ruid, euid))
281#else
282#ifdef HAS_SETRESUID
283 if (setresuid(ruid, euid, (Uid_t)-1))
284#endif
285#endif
cea2e8a9 286 Perl_croak(aTHX_ "leaving effective uid failed");
5ff3f7a4
GS		 287
288#ifdef HAS_SETREGID
289 if (setregid(rgid, egid))
290#else
291#ifdef HAS_SETRESGID
292 if (setresgid(rgid, egid, (Gid_t)-1))
293#endif
294#endif
cea2e8a9 295 Perl_croak(aTHX_ "leaving effective gid failed");
146174a9 296 UNLOCK_CRED_MUTEX;
5ff3f7a4
GS		 297
298 return res;
299}
d7558cad 300# define PERL_EFF_ACCESS(p,f) (emulate_eaccess((p), (f)))
5ff3f7a4
GS		 301#endif
302
faee0e31 303#if !defined(PERL_EFF_ACCESS)
76ffd3b9
IZ		 304/* With it or without it: anyway you get a warning: either that
305 it is unused, or it is declared static and never defined.
306 */
327c3667 307STATIC int
7f4774ae 308S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
ba106d47 309{
294a48e9
AL		 310 PERL_UNUSED_ARG(path);
311 PERL_UNUSED_ARG(mode);
cea2e8a9 312 Perl_croak(aTHX_ "switching effective uid is not implemented");
5ff3f7a4
GS		 313 /*NOTREACHED*/
314 return -1;
315}
316#endif
317
a0d0e21e
LW		 318PP(pp_backtick)
319{
97aff369 320 dVAR; dSP; dTARGET;
760ac839 321 PerlIO *fp;
1b6737cc 322 const char * const tmps = POPpconstx;
f54cb97a 323 const I32 gimme = GIMME_V;
e1ec3a88 324 const char *mode = "r";
54310121 325
a0d0e21e 326 TAINT_PROPER("``");
16fe6d59
GS		 327 if (PL_op->op_private & OPpOPEN_IN_RAW)
328 mode = "rb";
329 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
330 mode = "rt";
2fbb330f 331 fp = PerlProc_popen(tmps, mode);
a0d0e21e 332 if (fp) {
11bcd5da 333 const char * const type = Perl_PerlIO_context_layers(aTHX_ NULL);
ac27b0f5
NIS		 334 if (type && *type)
335 PerlIO_apply_layers(aTHX_ fp,mode,type);
336
54310121 337 if (gimme == G_VOID) {
96827780
MB		 338 char tmpbuf[256];
339 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
a79db61d 340 NOOP;
54310121 341 }
342 else if (gimme == G_SCALAR) {
75af1a9c
DM		 343 ENTER;
344 SAVESPTR(PL_rs);
fa326138 345 PL_rs = &PL_sv_undef;
c69006e4 346 sv_setpvn(TARG, "", 0); /* note that this preserves previous buffer */
bd61b366 347 while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
a79db61d 348 NOOP;
75af1a9c 349 LEAVE;
a0d0e21e 350 XPUSHs(TARG);
aa689395 351 SvTAINTED_on(TARG);
a0d0e21e
LW		 352 }
353 else {
a0d0e21e 354 for (;;) {
561b68a9 355 SV * const sv = newSV(79);
bd61b366 356 if (sv_gets(sv, fp, 0) == NULL) {
a0d0e21e
LW		 357 SvREFCNT_dec(sv);
358 break;
359 }
360 XPUSHs(sv_2mortal(sv));
361 if (SvLEN(sv) - SvCUR(sv) > 20) {
1da4ca5f 362 SvPV_shrink_to_cur(sv);
a0d0e21e 363 }
aa689395 364 SvTAINTED_on(sv);
a0d0e21e
LW		 365 }
366 }
2fbb330f 367 STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
aa689395 368 TAINT; /* "I believe that this is not gratuitous!" */
a0d0e21e
LW		 369 }
370 else {
37038d91 371 STATUS_NATIVE_CHILD_SET(-1);
54310121 372 if (gimme == G_SCALAR)
a0d0e21e
LW		 373 RETPUSHUNDEF;
374 }
375
376 RETURN;
377}
378
379PP(pp_glob)
380{
27da23d5 381 dVAR;
a0d0e21e 382 OP *result;
f5284f61
IZ		 383 tryAMAGICunTARGET(iter, -1);
384
71686f12
GS		 385 /* Note that we only ever get here if File::Glob fails to load
386 * without at the same time croaking, for some reason, or if
387 * perl was built with PERL_EXTERNAL_GLOB */
388
a0d0e21e 389 ENTER;
a0d0e21e 390
c90c0ff4 391#ifndef VMS
3280af22 392 if (PL_tainting) {
7bac28a0 393 /*
394 * The external globbing program may use things we can't control,
395 * so for security reasons we must assume the worst.
396 */
397 TAINT;
22c35a8c 398 taint_proper(PL_no_security, "glob");
7bac28a0 399 }
c90c0ff4 400#endif /* !VMS */
7bac28a0 401
3280af22
NIS		 402 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
403 PL_last_in_gv = (GV*)*PL_stack_sp--;
a0d0e21e 404
3280af22 405 SAVESPTR(PL_rs); /* This is not permanent, either. */
396482e1 406 PL_rs = sv_2mortal(newSVpvs("\000"));
c07a80fd 407#ifndef DOSISH
408#ifndef CSH
6b88bc9c 409 *SvPVX(PL_rs) = '\n';
a0d0e21e 410#endif /* !CSH */
55497cff 411#endif /* !DOSISH */
c07a80fd 412
a0d0e21e
LW		 413 result = do_readline();
414 LEAVE;
415 return result;
416}
417
a0d0e21e
LW		 418PP(pp_rcatline)
419{
97aff369 420 dVAR;
146174a9 421 PL_last_in_gv = cGVOP_gv;
a0d0e21e
LW		 422 return do_readline();
423}
424
425PP(pp_warn)
426{
97aff369 427 dVAR; dSP; dMARK;
06bf62c7 428 SV *tmpsv;
e1ec3a88 429 const char *tmps;
06bf62c7 430 STRLEN len;
b59aed67 431 if (SP - MARK > 1) {
a0d0e21e 432 dTARGET;
3280af22 433 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 434 tmpsv = TARG;
a0d0e21e
LW		 435 SP = MARK + 1;
436 }
b59aed67
TS		 437 else if (SP == MARK) {
438 tmpsv = &PL_sv_no;
439 EXTEND(SP, 1);
83f957ec 440 SP = MARK + 1;
b59aed67 441 }
a0d0e21e 442 else {
06bf62c7 443 tmpsv = TOPs;
a0d0e21e 444 }
e62f0680 445 tmps = SvPV_const(tmpsv, len);
7b102d90 446 if ((!tmps || !len) && PL_errgv) {
1b6737cc 447 SV * const error = ERRSV;
862a34c6 448 SvUPGRADE(error, SVt_PV);
4e6ea2c3 449 if (SvPOK(error) && SvCUR(error))
396482e1 450 sv_catpvs(error, "\t...caught");
06bf62c7 451 tmpsv = error;
e62f0680 452 tmps = SvPV_const(tmpsv, len);
a0d0e21e 453 }
06bf62c7 454 if (!tmps || !len)
396482e1 455 tmpsv = sv_2mortal(newSVpvs("Warning: something's wrong"));
06bf62c7 456
be2597df 457 Perl_warn(aTHX_ "%"SVf, SVfARG(tmpsv));
a0d0e21e
LW		 458 RETSETYES;
459}
460
461PP(pp_die)
462{
97aff369 463 dVAR; dSP; dMARK;
e1ec3a88 464 const char *tmps;
06bf62c7
GS		 465 SV *tmpsv;
466 STRLEN len;
467 bool multiarg = 0;
96e176bf
CL		 468#ifdef VMS
469 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
470#endif
a0d0e21e
LW		 471 if (SP - MARK != 1) {
472 dTARGET;
3280af22 473 do_join(TARG, &PL_sv_no, MARK, SP);
06bf62c7 474 tmpsv = TARG;
5c144d81 475 tmps = SvPV_const(tmpsv, len);
06bf62c7 476 multiarg = 1;
a0d0e21e
LW		 477 SP = MARK + 1;
478 }
479 else {
4e6ea2c3 480 tmpsv = TOPs;
bd61b366 481 tmps = SvROK(tmpsv) ? NULL : SvPV_const(tmpsv, len);
a0d0e21e 482 }
06bf62c7 483 if (!tmps || !len) {
0bcc34c2 484 SV * const error = ERRSV;
862a34c6 485 SvUPGRADE(error, SVt_PV);
06bf62c7
GS		 486 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
487 if (!multiarg)
4e6ea2c3 488 SvSetSV(error,tmpsv);
06bf62c7 489 else if (sv_isobject(error)) {
7452cf6a
AL		 490 HV * const stash = SvSTASH(SvRV(error));
491 GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
05423cc9 492 if (gv) {
7452cf6a
AL		 493 SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
494 SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
05423cc9
GS		 495 EXTEND(SP, 3);
496 PUSHMARK(SP);
497 PUSHs(error);
498 PUSHs(file);
499 PUSHs(line);
500 PUTBACK;
864dbfa3
GS		 501 call_sv((SV*)GvCV(gv),
502 G_SCALAR|G_EVAL|G_KEEPERR);
3280af22 503 sv_setsv(error,*PL_stack_sp--);
05423cc9
GS		 504 }
505 }
bd61b366 506 DIE(aTHX_ NULL);
4e6ea2c3
GS		 507 }
508 else {
509 if (SvPOK(error) && SvCUR(error))
396482e1 510 sv_catpvs(error, "\t...propagated");
06bf62c7 511 tmpsv = error;
dc8d642c
DM		 512 if (SvOK(tmpsv))
513 tmps = SvPV_const(tmpsv, len);
514 else
bd61b366 515 tmps = NULL;
4e6ea2c3 516 }
a0d0e21e 517 }
06bf62c7 518 if (!tmps || !len)
396482e1 519 tmpsv = sv_2mortal(newSVpvs("Died"));
06bf62c7 520
be2597df 521 DIE(aTHX_ "%"SVf, SVfARG(tmpsv));
a0d0e21e
LW		 522}
523
524/* I/O. */
525
526PP(pp_open)
527{
27da23d5 528 dVAR; dSP;
a567e93b
NIS		 529 dMARK; dORIGMARK;
530 dTARGET;
a0d0e21e 531 SV *sv;
5b468f54 532 IO *io;
5c144d81 533 const char *tmps;
a0d0e21e 534 STRLEN len;
a567e93b 535 bool ok;
a0d0e21e 536
c4420975
AL		 537 GV * const gv = (GV *)*++MARK;
538
5f05dabc 539 if (!isGV(gv))
cea2e8a9 540 DIE(aTHX_ PL_no_usym, "filehandle");
abc718f2 541
a79db61d
AL		 542 if ((io = GvIOp(gv))) {
543 MAGIC *mg;
36477c24 544 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
853846ea 545
abc718f2
RGS		 546 if (IoDIRP(io) && ckWARN2(WARN_IO, WARN_DEPRECATED))
547 Perl_warner(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
548 "Opening dirhandle %s also as a file", GvENAME(gv));
549
a79db61d 550 mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
c4420975
AL		 551 if (mg) {
552 /* Method's args are same as ours ... */
553 /* ... except handle is replaced by the object */
554 *MARK-- = SvTIED_obj((SV*)io, mg);
555 PUSHMARK(MARK);
556 PUTBACK;
557 ENTER;
558 call_method("OPEN", G_SCALAR);
559 LEAVE;
560 SPAGAIN;
561 RETURN;
562 }
4592e6ca
NIS		 563 }
564
a567e93b
NIS		 565 if (MARK < SP) {
566 sv = *++MARK;
567 }
568 else {
35a08ec7 569 sv = GvSVn(gv);
a567e93b
NIS		 570 }
571
5c144d81 572 tmps = SvPV_const(sv, len);
4608196e 573 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, MARK+1, (SP-MARK));
a567e93b
NIS		 574 SP = ORIGMARK;
575 if (ok)
3280af22
NIS		 576 PUSHi( (I32)PL_forkprocess );
577 else if (PL_forkprocess == 0) /* we are a new child */
a0d0e21e
LW		 578 PUSHi(0);
579 else
580 RETPUSHUNDEF;
581 RETURN;
582}
583
584PP(pp_close)
585{
27da23d5 586 dVAR; dSP;
c4420975 587 GV * const gv = (MAXARG == 0) ? PL_defoutgv : (GV*)POPs;
1d603a67 588
a79db61d
AL		 589 if (gv) {
590 IO * const io = GvIO(gv);
591 if (io) {
592 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
593 if (mg) {
594 PUSHMARK(SP);
595 XPUSHs(SvTIED_obj((SV*)io, mg));
596 PUTBACK;
597 ENTER;
598 call_method("CLOSE", G_SCALAR);
599 LEAVE;
600 SPAGAIN;
601 RETURN;
602 }
603 }
1d603a67 604 }
a0d0e21e 605 EXTEND(SP, 1);
54310121 606 PUSHs(boolSV(do_close(gv, TRUE)));
a0d0e21e
LW		 607 RETURN;
608}
609
610PP(pp_pipe_op)
611{
a0d0e21e 612#ifdef HAS_PIPE
97aff369 613 dVAR;
9cad6237 614 dSP;
a0d0e21e
LW		 615 register IO *rstio;
616 register IO *wstio;
617 int fd[2];
618
c4420975
AL		 619 GV * const wgv = (GV*)POPs;
620 GV * const rgv = (GV*)POPs;
a0d0e21e
LW		 621
622 if (!rgv || !wgv)
623 goto badexit;
624
4633a7c4 625 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
cea2e8a9 626 DIE(aTHX_ PL_no_usym, "filehandle");
a0d0e21e
LW		 627 rstio = GvIOn(rgv);
628 wstio = GvIOn(wgv);
629
630 if (IoIFP(rstio))
631 do_close(rgv, FALSE);
632 if (IoIFP(wstio))
633 do_close(wgv, FALSE);
634
6ad3d225 635 if (PerlProc_pipe(fd) < 0)
a0d0e21e
LW		 636 goto badexit;
637
460c8493
IZ		 638 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
639 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 640 IoOFP(rstio) = IoIFP(rstio);
a0d0e21e 641 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 642 IoTYPE(rstio) = IoTYPE_RDONLY;
643 IoTYPE(wstio) = IoTYPE_WRONLY;
a0d0e21e
LW		 644
645 if (!IoIFP(rstio) || !IoOFP(wstio)) {
a79db61d
AL		 646 if (IoIFP(rstio))
647 PerlIO_close(IoIFP(rstio));
648 else
649 PerlLIO_close(fd[0]);
650 if (IoOFP(wstio))
651 PerlIO_close(IoOFP(wstio));
652 else
653 PerlLIO_close(fd[1]);
a0d0e21e
LW		 654 goto badexit;
655 }
4771b018
GS		 656#if defined(HAS_FCNTL) && defined(F_SETFD)
657 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
658 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
659#endif
a0d0e21e
LW		 660 RETPUSHYES;
661
662badexit:
663 RETPUSHUNDEF;
664#else
cea2e8a9 665 DIE(aTHX_ PL_no_func, "pipe");
a0d0e21e
LW		 666#endif
667}
668
669PP(pp_fileno)
670{
27da23d5 671 dVAR; dSP; dTARGET;
a0d0e21e
LW		 672 GV *gv;
673 IO *io;
760ac839 674 PerlIO *fp;
4592e6ca
NIS		 675 MAGIC *mg;
676
a0d0e21e
LW		 677 if (MAXARG < 1)
678 RETPUSHUNDEF;
679 gv = (GV*)POPs;
4592e6ca 680
5b468f54
AMS		 681 if (gv && (io = GvIO(gv))
682 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
683 {
4592e6ca 684 PUSHMARK(SP);
5b468f54 685 XPUSHs(SvTIED_obj((SV*)io, mg));
4592e6ca
NIS		 686 PUTBACK;
687 ENTER;
864dbfa3 688 call_method("FILENO", G_SCALAR);
4592e6ca
NIS		 689 LEAVE;
690 SPAGAIN;
691 RETURN;
692 }
693
c289d2f7
JH		 694 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
695 /* Can't do this because people seem to do things like
696 defined(fileno($foo)) to check whether $foo is a valid fh.
697 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
698 report_evil_fh(gv, io, PL_op->op_type);
699 */
a0d0e21e 700 RETPUSHUNDEF;
c289d2f7
JH		 701 }
702
760ac839 703 PUSHi(PerlIO_fileno(fp));
a0d0e21e
LW		 704 RETURN;
705}
706
707PP(pp_umask)
708{
97aff369 709 dVAR;
27da23d5 710 dSP;
d7e492a4 711#ifdef HAS_UMASK
27da23d5 712 dTARGET;
761237fe 713 Mode_t anum;
a0d0e21e 714
a0d0e21e 715 if (MAXARG < 1) {
b0b546b3
GA		 716 anum = PerlLIO_umask(022);
717 /* setting it to 022 between the two calls to umask avoids
718 * to have a window where the umask is set to 0 -- meaning
719 * that another thread could create world-writeable files. */
720 if (anum != 022)
721 (void)PerlLIO_umask(anum);
a0d0e21e
LW		 722 }
723 else
6ad3d225 724 anum = PerlLIO_umask(POPi);
a0d0e21e
LW		 725 TAINT_PROPER("umask");
726 XPUSHi(anum);
727#else
a0288114 728 /* Only DIE if trying to restrict permissions on "user" (self).
eec2d3df
GS		 729 * Otherwise it's harmless and more useful to just return undef
730 * since 'group' and 'other' concepts probably don't exist here. */
731 if (MAXARG >= 1 && (POPi & 0700))
cea2e8a9 732 DIE(aTHX_ "umask not implemented");
6b88bc9c 733 XPUSHs(&PL_sv_undef);
a0d0e21e
LW		 734#endif
735 RETURN;
736}
737
738PP(pp_binmode)
739{
27da23d5 740 dVAR; dSP;
a0d0e21e
LW		 741 GV *gv;
742 IO *io;
760ac839 743 PerlIO *fp;
a0714e2c 744 SV *discp = NULL;
a0d0e21e
LW		 745
746 if (MAXARG < 1)
747 RETPUSHUNDEF;
60382766 748 if (MAXARG > 1) {
16fe6d59 749 discp = POPs;
60382766 750 }
a0d0e21e 751
301e8125 752 gv = (GV*)POPs;
4592e6ca 753
a79db61d
AL		 754 if (gv && (io = GvIO(gv))) {
755 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
756 if (mg) {
757 PUSHMARK(SP);
758 XPUSHs(SvTIED_obj((SV*)io, mg));
759 if (discp)
760 XPUSHs(discp);
761 PUTBACK;
762 ENTER;
763 call_method("BINMODE", G_SCALAR);
764 LEAVE;
765 SPAGAIN;
766 RETURN;
767 }
4592e6ca 768 }
a0d0e21e
LW		 769
770 EXTEND(SP, 1);
50f846a7 771 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
c289d2f7
JH		 772 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
773 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 774 SETERRNO(EBADF,RMS_IFI);
50f846a7
SC		 775 RETPUSHUNDEF;
776 }
a0d0e21e 777
40d98b49 778 PUTBACK;
f0a78170
NC		 779 {
780 const int mode = mode_from_discipline(discp);
781 const char *const d = (discp ? SvPV_nolen_const(discp) : NULL);
782 if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
783 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
784 if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
785 SPAGAIN;
786 RETPUSHUNDEF;
787 }
788 }
789 SPAGAIN;
790 RETPUSHYES;
791 }
792 else {
793 SPAGAIN;
794 RETPUSHUNDEF;
38af81ff 795 }
40d98b49 796 }
a0d0e21e
LW		 797}
798
799PP(pp_tie)
800{
27da23d5 801 dVAR; dSP; dMARK;
a0d0e21e
LW		 802 HV* stash;
803 GV *gv;
a0d0e21e 804 SV *sv;
1df70142 805 const I32 markoff = MARK - PL_stack_base;
e1ec3a88 806 const char *methname;
14befaf4 807 int how = PERL_MAGIC_tied;
e336de0d 808 U32 items;
c4420975 809 SV *varsv = *++MARK;
a0d0e21e 810
6b05c17a
NIS		 811 switch(SvTYPE(varsv)) {
812 case SVt_PVHV:
813 methname = "TIEHASH";
bfcb3514 814 HvEITER_set((HV *)varsv, 0);
6b05c17a
NIS		 815 break;
816 case SVt_PVAV:
817 methname = "TIEARRAY";
818 break;
819 case SVt_PVGV:
7fb37951
AMS		 820#ifdef GV_UNIQUE_CHECK
821 if (GvUNIQUE((GV*)varsv)) {
822 Perl_croak(aTHX_ "Attempt to tie unique GV");
5bd07a3d
DM		 823 }
824#endif
6b05c17a 825 methname = "TIEHANDLE";
14befaf4 826 how = PERL_MAGIC_tiedscalar;
5b468f54
AMS		 827 /* For tied filehandles, we apply tiedscalar magic to the IO
828 slot of the GP rather than the GV itself. AMS 20010812 */
829 if (!GvIOp(varsv))
830 GvIOp(varsv) = newIO();
831 varsv = (SV *)GvIOp(varsv);
6b05c17a
NIS		 832 break;
833 default:
834 methname = "TIESCALAR";
14befaf4 835 how = PERL_MAGIC_tiedscalar;
6b05c17a
NIS		 836 break;
837 }
e336de0d
GS		 838 items = SP - MARK++;
839 if (sv_isobject(*MARK)) {
6b05c17a 840 ENTER;
e788e7d3 841 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 842 PUSHMARK(SP);
eb160463 843 EXTEND(SP,(I32)items);
e336de0d
GS		 844 while (items--)
845 PUSHs(*MARK++);
846 PUTBACK;
864dbfa3 847 call_method(methname, G_SCALAR);
301e8125 848 }
6b05c17a 849 else {
864dbfa3 850 /* Not clear why we don't call call_method here too.
6b05c17a
NIS		 851 * perhaps to get different error message ?
852 */
da51bb9b 853 stash = gv_stashsv(*MARK, 0);
6b05c17a 854 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
35c1215d 855 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
be2597df 856 methname, SVfARG(*MARK));
6b05c17a
NIS		 857 }
858 ENTER;
e788e7d3 859 PUSHSTACKi(PERLSI_MAGIC);
e336de0d 860 PUSHMARK(SP);
eb160463 861 EXTEND(SP,(I32)items);
e336de0d
GS		 862 while (items--)
863 PUSHs(*MARK++);
864 PUTBACK;
864dbfa3 865 call_sv((SV*)GvCV(gv), G_SCALAR);
6b05c17a 866 }
a0d0e21e
LW		 867 SPAGAIN;
868
869 sv = TOPs;
d3acc0f7 870 POPSTACK;
a0d0e21e 871 if (sv_isobject(sv)) {
33c27489 872 sv_unmagic(varsv, how);
ae21d580 873 /* Croak if a self-tie on an aggregate is attempted. */
b881518d 874 if (varsv == SvRV(sv) &&
d87ebaca
YST		 875 (SvTYPE(varsv) == SVt_PVAV ||
876 SvTYPE(varsv) == SVt_PVHV))
ae21d580
JH		 877 Perl_croak(aTHX_
878 "Self-ties of arrays and hashes are not supported");
a0714e2c 879 sv_magic(varsv, (SvRV(sv) == varsv ? NULL : sv), how, NULL, 0);
a0d0e21e
LW		 880 }
881 LEAVE;
3280af22 882 SP = PL_stack_base + markoff;
a0d0e21e
LW		 883 PUSHs(sv);
884 RETURN;
885}
886
887PP(pp_untie)
888{
27da23d5 889 dVAR; dSP;
5b468f54 890 MAGIC *mg;
33c27489 891 SV *sv = POPs;
1df70142 892 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 893 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
55497cff 894
5b468f54
AMS		 895 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
896 RETPUSHYES;
897
65eba18f 898 if ((mg = SvTIED_mg(sv, how))) {
1b6737cc 899 SV * const obj = SvRV(SvTIED_obj(sv, mg));
fa2b88e0 900 if (obj) {
c4420975 901 GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
0bd48802 902 CV *cv;
c4420975 903 if (gv && isGV(gv) && (cv = GvCV(gv))) {
fa2b88e0
JS		 904 PUSHMARK(SP);
905 XPUSHs(SvTIED_obj((SV*)gv, mg));
906 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
907 PUTBACK;
908 ENTER;
909 call_sv((SV *)cv, G_VOID);
910 LEAVE;
911 SPAGAIN;
912 }
041457d9 913 else if (mg && SvREFCNT(obj) > 1 && ckWARN(WARN_UNTIE)) {
9014280d 914 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
fa2b88e0
JS		 915 "untie attempted while %"UVuf" inner references still exist",
916 (UV)SvREFCNT(obj) - 1 ) ;
c4420975 917 }
cbdc8872 918 }
919 }
38193a09 920 sv_unmagic(sv, how) ;
55497cff 921 RETPUSHYES;
a0d0e21e
LW		 922}
923
c07a80fd 924PP(pp_tied)
925{
97aff369 926 dVAR;
39644a26 927 dSP;
1b6737cc 928 const MAGIC *mg;
33c27489 929 SV *sv = POPs;
1df70142 930 const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
14befaf4 931 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
5b468f54
AMS		 932
933 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
934 RETPUSHUNDEF;
c07a80fd 935
155aba94 936 if ((mg = SvTIED_mg(sv, how))) {
33c27489
GS		 937 SV *osv = SvTIED_obj(sv, mg);
938 if (osv == mg->mg_obj)
939 osv = sv_mortalcopy(osv);
940 PUSHs(osv);
941 RETURN;
c07a80fd 942 }
c07a80fd 943 RETPUSHUNDEF;
944}
945
a0d0e21e
LW		 946PP(pp_dbmopen)
947{
27da23d5 948 dVAR; dSP;
a0d0e21e
LW		 949 dPOPPOPssrl;
950 HV* stash;
951 GV *gv;
a0d0e21e 952
1b6737cc 953 HV * const hv = (HV*)POPs;
7c58897d 954 SV * const sv = sv_2mortal(newSVpvs("AnyDBM_File"));
da51bb9b 955 stash = gv_stashsv(sv, 0);
8ebc5c01 956 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
a0d0e21e 957 PUTBACK;
864dbfa3 958 require_pv("AnyDBM_File.pm");
a0d0e21e 959 SPAGAIN;
8ebc5c01 960 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
cea2e8a9 961 DIE(aTHX_ "No dbm on this machine");
a0d0e21e
LW		 962 }
963
57d3b86d 964 ENTER;
924508f0 965 PUSHMARK(SP);
6b05c17a 966
924508f0 967 EXTEND(SP, 5);
a0d0e21e
LW		 968 PUSHs(sv);
969 PUSHs(left);
970 if (SvIV(right))
b448e4fe 971 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
a0d0e21e 972 else
b448e4fe 973 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
a0d0e21e 974 PUSHs(right);
57d3b86d 975 PUTBACK;
864dbfa3 976 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 977 SPAGAIN;
978
979 if (!sv_isobject(TOPs)) {
924508f0
GS		 980 SP--;
981 PUSHMARK(SP);
a0d0e21e
LW		 982 PUSHs(sv);
983 PUSHs(left);
b448e4fe 984 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
a0d0e21e 985 PUSHs(right);
a0d0e21e 986 PUTBACK;
864dbfa3 987 call_sv((SV*)GvCV(gv), G_SCALAR);
a0d0e21e
LW		 988 SPAGAIN;
989 }
990
6b05c17a 991 if (sv_isobject(TOPs)) {
14befaf4 992 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
bd61b366 993 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, NULL, 0);
6b05c17a 994 }
a0d0e21e
LW		 995 LEAVE;
996 RETURN;
997}
998
a0d0e21e
LW		 999PP(pp_sselect)
1000{
a0d0e21e 1001#ifdef HAS_SELECT
97aff369 1002 dVAR; dSP; dTARGET;
a0d0e21e
LW		 1003 register I32 i;
1004 register I32 j;
1005 register char *s;
1006 register SV *sv;
65202027 1007 NV value;
a0d0e21e
LW		 1008 I32 maxlen = 0;
1009 I32 nfound;
1010 struct timeval timebuf;
1011 struct timeval *tbuf = &timebuf;
1012 I32 growsize;
1013 char *fd_sets[4];
1014#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1015 I32 masksize;
1016 I32 offset;
1017 I32 k;
1018
1019# if BYTEORDER & 0xf0000
1020# define ORDERBYTE (0x88888888 - BYTEORDER)
1021# else
1022# define ORDERBYTE (0x4444 - BYTEORDER)
1023# endif
1024
1025#endif
1026
1027 SP -= 4;
1028 for (i = 1; i <= 3; i++) {
c4420975 1029 SV * const sv = SP[i];
15547071
GA		 1030 if (!SvOK(sv))
1031 continue;
1032 if (SvREADONLY(sv)) {
729c079f
NC		 1033 if (SvIsCOW(sv))
1034 sv_force_normal_flags(sv, 0);
15547071 1035 if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
729c079f
NC		 1036 DIE(aTHX_ PL_no_modify);
1037 }
4ef2275c
GA		 1038 if (!SvPOK(sv)) {
1039 if (ckWARN(WARN_MISC))
1040 Perl_warner(aTHX_ packWARN(WARN_MISC), "Non-string passed as bitmask");
1041 SvPV_force_nolen(sv); /* force string conversion */
1042 }
729c079f 1043 j = SvCUR(sv);
a0d0e21e
LW		 1044 if (maxlen < j)
1045 maxlen = j;
1046 }
1047
5ff3f7a4 1048/* little endians can use vecs directly */
e366b469 1049#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
5ff3f7a4 1050# ifdef NFDBITS
a0d0e21e 1051
5ff3f7a4
GS		 1052# ifndef NBBY
1053# define NBBY 8
1054# endif
a0d0e21e
LW		 1055
1056 masksize = NFDBITS / NBBY;
5ff3f7a4 1057# else
a0d0e21e 1058 masksize = sizeof(long); /* documented int, everyone seems to use long */
5ff3f7a4 1059# endif
a0d0e21e
LW		 1060 Zero(&fd_sets[0], 4, char*);
1061#endif
1062
ad517f75
MHM		 1063# if SELECT_MIN_BITS == 1
1064 growsize = sizeof(fd_set);
1065# else
1066# if defined(__GLIBC__) && defined(__FD_SETSIZE)
1067# undef SELECT_MIN_BITS
1068# define SELECT_MIN_BITS __FD_SETSIZE
1069# endif
e366b469
PG		 1070 /* If SELECT_MIN_BITS is greater than one we most probably will want
1071 * to align the sizes with SELECT_MIN_BITS/8 because for example
1072 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1073 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1074 * on (sets/tests/clears bits) is 32 bits. */
1075 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
e366b469
PG		 1076# endif
1077
a0d0e21e
LW		 1078 sv = SP[4];
1079 if (SvOK(sv)) {
1080 value = SvNV(sv);
1081 if (value < 0.0)
1082 value = 0.0;
1083 timebuf.tv_sec = (long)value;
65202027 1084 value -= (NV)timebuf.tv_sec;
a0d0e21e
LW		 1085 timebuf.tv_usec = (long)(value * 1000000.0);
1086 }
1087 else
4608196e 1088 tbuf = NULL;
a0d0e21e
LW		 1089
1090 for (i = 1; i <= 3; i++) {
1091 sv = SP[i];
15547071 1092 if (!SvOK(sv) || SvCUR(sv) == 0) {
a0d0e21e
LW		 1093 fd_sets[i] = 0;
1094 continue;
1095 }
4ef2275c 1096 assert(SvPOK(sv));
a0d0e21e
LW		 1097 j = SvLEN(sv);
1098 if (j < growsize) {
1099 Sv_Grow(sv, growsize);
a0d0e21e 1100 }
c07a80fd 1101 j = SvCUR(sv);
1102 s = SvPVX(sv) + j;
1103 while (++j <= growsize) {
1104 *s++ = '\0';
1105 }
1106
a0d0e21e
LW		 1107#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1108 s = SvPVX(sv);
a02a5408 1109 Newx(fd_sets[i], growsize, char);
a0d0e21e
LW		 1110 for (offset = 0; offset < growsize; offset += masksize) {
1111 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1112 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1113 }
1114#else
1115 fd_sets[i] = SvPVX(sv);
1116#endif
1117 }
1118
dc4c69d9
JH		 1119#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1120 /* Can't make just the (void*) conditional because that would be
1121 * cpp #if within cpp macro, and not all compilers like that. */
1122 nfound = PerlSock_select(
1123 maxlen * 8,
1124 (Select_fd_set_t) fd_sets[1],
1125 (Select_fd_set_t) fd_sets[2],
1126 (Select_fd_set_t) fd_sets[3],
1127 (void*) tbuf); /* Workaround for compiler bug. */
1128#else
6ad3d225 1129 nfound = PerlSock_select(
a0d0e21e
LW		 1130 maxlen * 8,
1131 (Select_fd_set_t) fd_sets[1],
1132 (Select_fd_set_t) fd_sets[2],
1133 (Select_fd_set_t) fd_sets[3],
1134 tbuf);
dc4c69d9 1135#endif
a0d0e21e
LW		 1136 for (i = 1; i <= 3; i++) {
1137 if (fd_sets[i]) {
1138 sv = SP[i];
1139#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1140 s = SvPVX(sv);
1141 for (offset = 0; offset < growsize; offset += masksize) {
1142 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1143 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1144 }
1145 Safefree(fd_sets[i]);
1146#endif
1147 SvSETMAGIC(sv);
1148 }
1149 }
1150
4189264e 1151 PUSHi(nfound);
a0d0e21e 1152 if (GIMME == G_ARRAY && tbuf) {
65202027
DS		 1153 value = (NV)(timebuf.tv_sec) +
1154 (NV)(timebuf.tv_usec) / 1000000.0;
7c58897d 1155 PUSHs(sv_2mortal(newSVnv(value)));
a0d0e21e
LW		 1156 }
1157 RETURN;
1158#else
cea2e8a9 1159 DIE(aTHX_ "select not implemented");
a0d0e21e
LW		 1160#endif
1161}
1162
4633a7c4 1163void
864dbfa3 1164Perl_setdefout(pTHX_ GV *gv)
4633a7c4 1165{
97aff369 1166 dVAR;
b37c2d43 1167 SvREFCNT_inc_simple_void(gv);
3280af22
NIS		 1168 if (PL_defoutgv)
1169 SvREFCNT_dec(PL_defoutgv);
1170 PL_defoutgv = gv;
4633a7c4
LW		 1171}
1172
a0d0e21e
LW		 1173PP(pp_select)
1174{
97aff369 1175 dVAR; dSP; dTARGET;
4633a7c4 1176 HV *hv;
a79db61d 1177 GV * const newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : NULL;
7452cf6a 1178 GV * egv = GvEGV(PL_defoutgv);
4633a7c4 1179
4633a7c4 1180 if (!egv)
3280af22 1181 egv = PL_defoutgv;
4633a7c4
LW		 1182 hv = GvSTASH(egv);
1183 if (! hv)
3280af22 1184 XPUSHs(&PL_sv_undef);
4633a7c4 1185 else {
c4420975 1186 GV * const * const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
f86702cc 1187 if (gvp && *gvp == egv) {
bd61b366 1188 gv_efullname4(TARG, PL_defoutgv, NULL, TRUE);
f86702cc 1189 XPUSHTARG;
1190 }
1191 else {
1192 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1193 }
4633a7c4
LW		 1194 }
1195
1196 if (newdefout) {
ded8aa31
GS		 1197 if (!GvIO(newdefout))
1198 gv_IOadd(newdefout);
4633a7c4
LW		 1199 setdefout(newdefout);
1200 }
1201
a0d0e21e
LW		 1202 RETURN;
1203}
1204
1205PP(pp_getc)
1206{
27da23d5 1207 dVAR; dSP; dTARGET;
90133b69 1208 IO *io = NULL;
1b6737cc 1209 GV * const gv = (MAXARG==0) ? PL_stdingv : (GV*)POPs;
2ae324a7 1210
a79db61d
AL		 1211 if (gv && (io = GvIO(gv))) {
1212 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1213 if (mg) {
1214 const I32 gimme = GIMME_V;
1215 PUSHMARK(SP);
1216 XPUSHs(SvTIED_obj((SV*)io, mg));
1217 PUTBACK;
1218 ENTER;
1219 call_method("GETC", gimme);
1220 LEAVE;
1221 SPAGAIN;
1222 if (gimme == G_SCALAR)
1223 SvSetMagicSV_nosteal(TARG, TOPs);
1224 RETURN;
1225 }
2ae324a7 1226 }
90133b69 1227 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
041457d9
DM		 1228 if ((!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
1229 && ckWARN2(WARN_UNOPENED,WARN_CLOSED))
90133b69 1230 report_evil_fh(gv, io, PL_op->op_type);
b5fe5ca2 1231 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1232 RETPUSHUNDEF;
90133b69 1233 }
bbce6d69 1234 TAINT;
c69006e4 1235 sv_setpvn(TARG, " ", 1);
9bc64814 1236 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
7d59b7e4
NIS		 1237 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1238 /* Find out how many bytes the char needs */
aa07b2f6 1239 Size_t len = UTF8SKIP(SvPVX_const(TARG));
7d59b7e4
NIS		 1240 if (len > 1) {
1241 SvGROW(TARG,len+1);
1242 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1243 SvCUR_set(TARG,1+len);
1244 }
1245 SvUTF8_on(TARG);
1246 }
a0d0e21e
LW		 1247 PUSHTARG;
1248 RETURN;
1249}
1250
76e3520e 1251STATIC OP *
cea2e8a9 1252S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
a0d0e21e 1253{
27da23d5 1254 dVAR;
c09156bb 1255 register PERL_CONTEXT *cx;
f54cb97a 1256 const I32 gimme = GIMME_V;
a0d0e21e
LW		 1257
1258 ENTER;
1259 SAVETMPS;
1260
146174a9 1261 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
a0d0e21e 1262 PUSHFORMAT(cx);
f39bc417 1263 cx->blk_sub.retop = retop;
fd617465
DM		 1264 SAVECOMPPAD();
1265 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
a0d0e21e 1266
4633a7c4 1267 setdefout(gv); /* locally select filehandle so $% et al work */
a0d0e21e
LW		 1268 return CvSTART(cv);
1269}
1270
1271PP(pp_enterwrite)
1272{
97aff369 1273 dVAR;
39644a26 1274 dSP;
a0d0e21e
LW		 1275 register GV *gv;
1276 register IO *io;
1277 GV *fgv;
1278 CV *cv;
10edeb5d 1279 SV * tmpsv = NULL;
a0d0e21e
LW		 1280
1281 if (MAXARG == 0)
3280af22 1282 gv = PL_defoutgv;
a0d0e21e
LW		 1283 else {
1284 gv = (GV*)POPs;
1285 if (!gv)
3280af22 1286 gv = PL_defoutgv;
a0d0e21e
LW		 1287 }
1288 EXTEND(SP, 1);
1289 io = GvIO(gv);
1290 if (!io) {
1291 RETPUSHNO;
1292 }
1293 if (IoFMT_GV(io))
1294 fgv = IoFMT_GV(io);
1295 else
1296 fgv = gv;
1297
a79db61d
AL		 1298 if (!fgv)
1299 goto not_a_format_reference;
1300
a0d0e21e 1301 cv = GvFORM(fgv);
a0d0e21e 1302 if (!cv) {
f4a7049d 1303 const char *name;
10edeb5d 1304 tmpsv = sv_newmortal();
f4a7049d
NC		 1305 gv_efullname4(tmpsv, fgv, NULL, FALSE);
1306 name = SvPV_nolen_const(tmpsv);
1307 if (name && *name)
1308 DIE(aTHX_ "Undefined format \"%s\" called", name);
a79db61d
AL		 1309
1310 not_a_format_reference:
cea2e8a9 1311 DIE(aTHX_ "Not a format reference");
a0d0e21e 1312 }
44a8e56a 1313 if (CvCLONE(cv))
1314 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
a0d0e21e 1315
44a8e56a 1316 IoFLAGS(io) &= ~IOf_DIDTOP;
533c011a 1317 return doform(cv,gv,PL_op->op_next);
a0d0e21e
LW		 1318}
1319
1320PP(pp_leavewrite)
1321{
27da23d5 1322 dVAR; dSP;
1b6737cc
AL		 1323 GV * const gv = cxstack[cxstack_ix].blk_sub.gv;
1324 register IO * const io = GvIOp(gv);
8b8cacda 1325 PerlIO *ofp;
760ac839 1326 PerlIO *fp;
8772537c
AL		 1327 SV **newsp;
1328 I32 gimme;
c09156bb 1329 register PERL_CONTEXT *cx;
a0d0e21e 1330
8b8cacda
B		 1331 if (!io || !(ofp = IoOFP(io)))
1332 goto forget_top;
1333
760ac839 1334 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
3280af22 1335 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
8b8cacda 1336
3280af22
NIS		 1337 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1338 PL_formtarget != PL_toptarget)
a0d0e21e 1339 {
4633a7c4
LW		 1340 GV *fgv;
1341 CV *cv;
a0d0e21e
LW		 1342 if (!IoTOP_GV(io)) {
1343 GV *topgv;
a0d0e21e
LW		 1344
1345 if (!IoTOP_NAME(io)) {
1b6737cc 1346 SV *topname;
a0d0e21e
LW		 1347 if (!IoFMT_NAME(io))
1348 IoFMT_NAME(io) = savepv(GvNAME(gv));
0bd0581c 1349 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
f776e3cd 1350 topgv = gv_fetchsv(topname, 0, SVt_PVFM);
748a9306 1351 if ((topgv && GvFORM(topgv)) ||
fafc274c 1352 !gv_fetchpvs("top", GV_NOTQUAL, SVt_PVFM))
2e0de35c 1353 IoTOP_NAME(io) = savesvpv(topname);
a0d0e21e 1354 else
89529cee 1355 IoTOP_NAME(io) = savepvs("top");
a0d0e21e 1356 }
f776e3cd 1357 topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
a0d0e21e 1358 if (!topgv || !GvFORM(topgv)) {
b929a54b 1359 IoLINES_LEFT(io) = IoPAGE_LEN(io);
a0d0e21e
LW		 1360 goto forget_top;
1361 }
1362 IoTOP_GV(io) = topgv;
1363 }
748a9306
LW		 1364 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1365 I32 lines = IoLINES_LEFT(io);
504618e9 1366 const char *s = SvPVX_const(PL_formtarget);
8e07c86e
AD		 1367 if (lines <= 0) /* Yow, header didn't even fit!!! */
1368 goto forget_top;
748a9306
LW		 1369 while (lines-- > 0) {
1370 s = strchr(s, '\n');
1371 if (!s)
1372 break;
1373 s++;
1374 }
1375 if (s) {
f54cb97a 1376 const STRLEN save = SvCUR(PL_formtarget);
aa07b2f6 1377 SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
d75029d0
NIS		 1378 do_print(PL_formtarget, ofp);
1379 SvCUR_set(PL_formtarget, save);
3280af22
NIS		 1380 sv_chop(PL_formtarget, s);
1381 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
748a9306
LW		 1382 }
1383 }
a0d0e21e 1384 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
d75029d0 1385 do_print(PL_formfeed, ofp);
a0d0e21e
LW		 1386 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1387 IoPAGE(io)++;
3280af22 1388 PL_formtarget = PL_toptarget;
748a9306 1389 IoFLAGS(io) |= IOf_DIDTOP;
4633a7c4
LW		 1390 fgv = IoTOP_GV(io);
1391 if (!fgv)
cea2e8a9 1392 DIE(aTHX_ "bad top format reference");
4633a7c4 1393 cv = GvFORM(fgv);
1df70142
AL		 1394 if (!cv) {
1395 SV * const sv = sv_newmortal();
b464bac0 1396 const char *name;
bd61b366 1397 gv_efullname4(sv, fgv, NULL, FALSE);
e62f0680 1398 name = SvPV_nolen_const(sv);
2dd78f96 1399 if (name && *name)
0e528f24
JH		 1400 DIE(aTHX_ "Undefined top format \"%s\" called", name);
1401 else
1402 DIE(aTHX_ "Undefined top format called");
4633a7c4 1403 }
0e528f24 1404 if (cv && CvCLONE(cv))
44a8e56a 1405 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
0e528f24 1406 return doform(cv, gv, PL_op);
a0d0e21e
LW		 1407 }
1408
1409 forget_top:
3280af22 1410 POPBLOCK(cx,PL_curpm);
a0d0e21e
LW		 1411 POPFORMAT(cx);
1412 LEAVE;
1413
1414 fp = IoOFP(io);
1415 if (!fp) {
599cee73 1416 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1417 if (IoIFP(io))
1418 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1419 else if (ckWARN(WARN_CLOSED))
bc37a18f 1420 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1421 }
3280af22 1422 PUSHs(&PL_sv_no);
a0d0e21e
LW		 1423 }
1424 else {
3280af22 1425 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
599cee73 1426 if (ckWARN(WARN_IO))
9014280d 1427 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
a0d0e21e 1428 }
d75029d0 1429 if (!do_print(PL_formtarget, fp))
3280af22 1430 PUSHs(&PL_sv_no);
a0d0e21e 1431 else {
3280af22
NIS		 1432 FmLINES(PL_formtarget) = 0;
1433 SvCUR_set(PL_formtarget, 0);
1434 *SvEND(PL_formtarget) = '\0';
a0d0e21e 1435 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1436 (void)PerlIO_flush(fp);
3280af22 1437 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1438 }
1439 }
9cbac4c7 1440 /* bad_ofp: */
3280af22 1441 PL_formtarget = PL_bodytarget;
a0d0e21e 1442 PUTBACK;
29033a8a
SH		 1443 PERL_UNUSED_VAR(newsp);
1444 PERL_UNUSED_VAR(gimme);
f39bc417 1445 return cx->blk_sub.retop;
a0d0e21e
LW		 1446}
1447
1448PP(pp_prtf)
1449{
27da23d5 1450 dVAR; dSP; dMARK; dORIGMARK;
a0d0e21e 1451 IO *io;
760ac839 1452 PerlIO *fp;
26db47c4 1453 SV *sv;
a0d0e21e 1454
c4420975 1455 GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv;
46fc3d4c 1456
a79db61d
AL		 1457 if (gv && (io = GvIO(gv))) {
1458 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1459 if (mg) {
1460 if (MARK == ORIGMARK) {
1461 MEXTEND(SP, 1);
1462 ++MARK;
1463 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1464 ++SP;
1465 }
1466 PUSHMARK(MARK - 1);
1467 *MARK = SvTIED_obj((SV*)io, mg);
1468 PUTBACK;
1469 ENTER;
1470 call_method("PRINTF", G_SCALAR);
1471 LEAVE;
1472 SPAGAIN;
1473 MARK = ORIGMARK + 1;
1474 *MARK = *SP;
1475 SP = MARK;
1476 RETURN;
1477 }
46fc3d4c 1478 }
1479
561b68a9 1480 sv = newSV(0);
a0d0e21e 1481 if (!(io = GvIO(gv))) {
2dd78f96
JH		 1482 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1483 report_evil_fh(gv, io, PL_op->op_type);
93189314 1484 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 1485 goto just_say_no;
1486 }
1487 else if (!(fp = IoOFP(io))) {
599cee73 1488 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
6e6ef6b2
NC		 1489 if (IoIFP(io))
1490 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
599cee73 1491 else if (ckWARN(WARN_CLOSED))
bc37a18f 1492 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 1493 }
93189314 1494 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
a0d0e21e
LW		 1495 goto just_say_no;
1496 }
1497 else {
20ee07fb
RGS		 1498 if (SvTAINTED(MARK[1]))
1499 TAINT_PROPER("printf");
a0d0e21e
LW		 1500 do_sprintf(sv, SP - MARK, MARK + 1);
1501 if (!do_print(sv, fp))
1502 goto just_say_no;
1503
1504 if (IoFLAGS(io) & IOf_FLUSH)
760ac839 1505 if (PerlIO_flush(fp) == EOF)
a0d0e21e
LW		 1506 goto just_say_no;
1507 }
1508 SvREFCNT_dec(sv);
1509 SP = ORIGMARK;
3280af22 1510 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 1511 RETURN;
1512
1513 just_say_no:
1514 SvREFCNT_dec(sv);
1515 SP = ORIGMARK;
3280af22 1516 PUSHs(&PL_sv_undef);
a0d0e21e
LW		 1517 RETURN;
1518}
1519
c07a80fd 1520PP(pp_sysopen)
1521{
97aff369 1522 dVAR;
39644a26 1523 dSP;
1df70142
AL		 1524 const int perm = (MAXARG > 3) ? POPi : 0666;
1525 const int mode = POPi;
1b6737cc
AL		 1526 SV * const sv = POPs;
1527 GV * const gv = (GV *)POPs;
1528 STRLEN len;
c07a80fd 1529
4592e6ca 1530 /* Need TIEHANDLE method ? */
1b6737cc 1531 const char * const tmps = SvPV_const(sv, len);
e62f0680 1532 /* FIXME? do_open should do const */
4608196e 1533 if (do_open(gv, tmps, len, TRUE, mode, perm, NULL)) {
c07a80fd 1534 IoLINES(GvIOp(gv)) = 0;
3280af22 1535 PUSHs(&PL_sv_yes);
c07a80fd 1536 }
1537 else {
3280af22 1538 PUSHs(&PL_sv_undef);
c07a80fd 1539 }
1540 RETURN;
1541}
1542
a0d0e21e
LW		 1543PP(pp_sysread)
1544{
27da23d5 1545 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1546 int offset;
a0d0e21e
LW		 1547 IO *io;
1548 char *buffer;
5b54f415 1549 SSize_t length;
eb5c063a 1550 SSize_t count;
1e422769 1551 Sock_size_t bufsize;
748a9306 1552 SV *bufsv;
a0d0e21e 1553 STRLEN blen;
eb5c063a 1554 int fp_utf8;
1dd30107
NC		 1555 int buffer_utf8;
1556 SV *read_target;
eb5c063a
NIS		 1557 Size_t got = 0;
1558 Size_t wanted;
1d636c13 1559 bool charstart = FALSE;
87330c3c
JH		 1560 STRLEN charskip = 0;
1561 STRLEN skip = 0;
a0d0e21e 1562
1b6737cc 1563 GV * const gv = (GV*)*++MARK;
5b468f54 1564 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1b6737cc 1565 && gv && (io = GvIO(gv)) )
137443ea 1566 {
1b6737cc
AL		 1567 const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1568 if (mg) {
1569 SV *sv;
1570 PUSHMARK(MARK-1);
1571 *MARK = SvTIED_obj((SV*)io, mg);
1572 ENTER;
1573 call_method("READ", G_SCALAR);
1574 LEAVE;
1575 SPAGAIN;
1576 sv = POPs;
1577 SP = ORIGMARK;
1578 PUSHs(sv);
1579 RETURN;
1580 }
2ae324a7 1581 }
1582
a0d0e21e
LW		 1583 if (!gv)
1584 goto say_undef;
748a9306 1585 bufsv = *++MARK;
ff68c719 1586 if (! SvOK(bufsv))
1587 sv_setpvn(bufsv, "", 0);
a0d0e21e 1588 length = SvIVx(*++MARK);
748a9306 1589 SETERRNO(0,0);
a0d0e21e
LW		 1590 if (MARK < SP)
1591 offset = SvIVx(*++MARK);
1592 else
1593 offset = 0;
1594 io = GvIO(gv);
b5fe5ca2
SR		 1595 if (!io || !IoIFP(io)) {
1596 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1597 report_evil_fh(gv, io, PL_op->op_type);
1598 SETERRNO(EBADF,RMS_IFI);
a0d0e21e 1599 goto say_undef;
b5fe5ca2 1600 }
0064a8a9 1601 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
7d59b7e4 1602 buffer = SvPVutf8_force(bufsv, blen);
1e54db1a 1603 /* UTF-8 may not have been set if they are all low bytes */
eb5c063a 1604 SvUTF8_on(bufsv);
9b9d7ce8 1605 buffer_utf8 = 0;
7d59b7e4
NIS		 1606 }
1607 else {
1608 buffer = SvPV_force(bufsv, blen);
1dd30107 1609 buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
7d59b7e4
NIS		 1610 }
1611 if (length < 0)
1612 DIE(aTHX_ "Negative length");
eb5c063a 1613 wanted = length;
7d59b7e4 1614
d0965105
JH		 1615 charstart = TRUE;
1616 charskip = 0;
87330c3c 1617 skip = 0;
d0965105 1618
a0d0e21e 1619#ifdef HAS_SOCKET
533c011a 1620 if (PL_op->op_type == OP_RECV) {
46fc3d4c 1621 char namebuf[MAXPATHLEN];
17a8c7ba 1622#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
490ab354
JH		 1623 bufsize = sizeof (struct sockaddr_in);
1624#else
46fc3d4c 1625 bufsize = sizeof namebuf;
490ab354 1626#endif
abf95952
IZ		 1627#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1628 if (bufsize >= 256)
1629 bufsize = 255;
1630#endif
eb160463 1631 buffer = SvGROW(bufsv, (STRLEN)(length+1));
bbce6d69 1632 /* 'offset' means 'flags' here */
eb5c063a 1633 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
10edeb5d 1634 (struct sockaddr *)namebuf, &bufsize);
eb5c063a 1635 if (count < 0)
a0d0e21e 1636 RETPUSHUNDEF;
4107cc59
OF		 1637#ifdef EPOC
1638 /* Bogus return without padding */
1639 bufsize = sizeof (struct sockaddr_in);
1640#endif
eb5c063a 1641 SvCUR_set(bufsv, count);
748a9306
LW		 1642 *SvEND(bufsv) = '\0';
1643 (void)SvPOK_only(bufsv);
eb5c063a
NIS		 1644 if (fp_utf8)
1645 SvUTF8_on(bufsv);
748a9306 1646 SvSETMAGIC(bufsv);
aac0dd9a 1647 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1648 if (!(IoFLAGS(io) & IOf_UNTAINT))
1649 SvTAINTED_on(bufsv);
a0d0e21e 1650 SP = ORIGMARK;
46fc3d4c 1651 sv_setpvn(TARG, namebuf, bufsize);
a0d0e21e
LW		 1652 PUSHs(TARG);
1653 RETURN;
1654 }
1655#else
911d147d 1656 if (PL_op->op_type == OP_RECV)
cea2e8a9 1657 DIE(aTHX_ PL_no_sock_func, "recv");
a0d0e21e 1658#endif
eb5c063a
NIS		 1659 if (DO_UTF8(bufsv)) {
1660 /* offset adjust in characters not bytes */
1661 blen = sv_len_utf8(bufsv);
7d59b7e4 1662 }
bbce6d69 1663 if (offset < 0) {
eb160463 1664 if (-offset > (int)blen)
cea2e8a9 1665 DIE(aTHX_ "Offset outside string");
bbce6d69 1666 offset += blen;
1667 }
eb5c063a
NIS		 1668 if (DO_UTF8(bufsv)) {
1669 /* convert offset-as-chars to offset-as-bytes */
6960c29a
CH		 1670 if (offset >= (int)blen)
1671 offset += SvCUR(bufsv) - blen;
1672 else
1673 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
eb5c063a
NIS		 1674 }
1675 more_bytes:
cd52b7b2 1676 bufsize = SvCUR(bufsv);
1dd30107
NC		 1677 /* Allocating length + offset + 1 isn't perfect in the case of reading
1678 bytes from a byte file handle into a UTF8 buffer, but it won't harm us
1679 unduly.
1680 (should be 2 * length + offset + 1, or possibly something longer if
1681 PL_encoding is true) */
eb160463 1682 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
27da23d5 1683 if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
cd52b7b2 1684 Zero(buffer+bufsize, offset-bufsize, char);
1685 }
eb5c063a 1686 buffer = buffer + offset;
1dd30107
NC		 1687 if (!buffer_utf8) {
1688 read_target = bufsv;
1689 } else {
1690 /* Best to read the bytes into a new SV, upgrade that to UTF8, then
1691 concatenate it to the current buffer. */
1692
1693 /* Truncate the existing buffer to the start of where we will be
1694 reading to: */
1695 SvCUR_set(bufsv, offset);
1696
1697 read_target = sv_newmortal();
862a34c6 1698 SvUPGRADE(read_target, SVt_PV);
fe2774ed 1699 buffer = SvGROW(read_target, (STRLEN)(length + 1));
1dd30107 1700 }
eb5c063a 1701
533c011a 1702 if (PL_op->op_type == OP_SYSREAD) {
a7092146 1703#ifdef PERL_SOCK_SYSREAD_IS_RECV
50952442 1704 if (IoTYPE(io) == IoTYPE_SOCKET) {
eb5c063a
NIS		 1705 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1706 buffer, length, 0);
a7092146
GS		 1707 }
1708 else
1709#endif
1710 {
eb5c063a
NIS		 1711 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1712 buffer, length);
a7092146 1713 }
a0d0e21e
LW		 1714 }
1715 else
1716#ifdef HAS_SOCKET__bad_code_maybe
50952442 1717 if (IoTYPE(io) == IoTYPE_SOCKET) {
46fc3d4c 1718 char namebuf[MAXPATHLEN];
490ab354
JH		 1719#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1720 bufsize = sizeof (struct sockaddr_in);
1721#else
46fc3d4c 1722 bufsize = sizeof namebuf;
490ab354 1723#endif
eb5c063a 1724 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
46fc3d4c 1725 (struct sockaddr *)namebuf, &bufsize);
a0d0e21e
LW		 1726 }
1727 else
1728#endif
3b02c43c 1729 {
eb5c063a
NIS		 1730 count = PerlIO_read(IoIFP(io), buffer, length);
1731 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1732 if (count == 0 && PerlIO_error(IoIFP(io)))
1733 count = -1;
3b02c43c 1734 }
eb5c063a 1735 if (count < 0) {
a00b5bd3 1736 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
6e6ef6b2 1737 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
a0d0e21e 1738 goto say_undef;
af8c498a 1739 }
aa07b2f6 1740 SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
1dd30107
NC		 1741 *SvEND(read_target) = '\0';
1742 (void)SvPOK_only(read_target);
0064a8a9 1743 if (fp_utf8 && !IN_BYTES) {
eb5c063a 1744 /* Look at utf8 we got back and count the characters */
1df70142 1745 const char *bend = buffer + count;
eb5c063a 1746 while (buffer < bend) {
d0965105
JH		 1747 if (charstart) {
1748 skip = UTF8SKIP(buffer);
1749 charskip = 0;
1750 }
1751 if (buffer - charskip + skip > bend) {
eb5c063a
NIS		 1752 /* partial character - try for rest of it */
1753 length = skip - (bend-buffer);
aa07b2f6 1754 offset = bend - SvPVX_const(bufsv);
d0965105
JH		 1755 charstart = FALSE;
1756 charskip += count;
eb5c063a
NIS		 1757 goto more_bytes;
1758 }
1759 else {
1760 got++;
1761 buffer += skip;
d0965105
JH		 1762 charstart = TRUE;
1763 charskip = 0;
eb5c063a
NIS		 1764 }
1765 }
1766 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1767 provided amount read (count) was what was requested (length)
1768 */
1769 if (got < wanted && count == length) {
d0965105 1770 length = wanted - got;
aa07b2f6 1771 offset = bend - SvPVX_const(bufsv);
eb5c063a
NIS		 1772 goto more_bytes;
1773 }
1774 /* return value is character count */
1775 count = got;
1776 SvUTF8_on(bufsv);
1777 }
1dd30107
NC		 1778 else if (buffer_utf8) {
1779 /* Let svcatsv upgrade the bytes we read in to utf8.
1780 The buffer is a mortal so will be freed soon. */
1781 sv_catsv_nomg(bufsv, read_target);
1782 }
748a9306 1783 SvSETMAGIC(bufsv);
aac0dd9a 1784 /* This should not be marked tainted if the fp is marked clean */
bbce6d69 1785 if (!(IoFLAGS(io) & IOf_UNTAINT))
1786 SvTAINTED_on(bufsv);
a0d0e21e 1787 SP = ORIGMARK;
eb5c063a 1788 PUSHi(count);
a0d0e21e
LW		 1789 RETURN;
1790
1791 say_undef:
1792 SP = ORIGMARK;
1793 RETPUSHUNDEF;
1794}
1795
a0d0e21e
LW		 1796PP(pp_send)
1797{
27da23d5 1798 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 1799 IO *io;
748a9306 1800 SV *bufsv;
83003860 1801 const char *buffer;
8c99d73e 1802 SSize_t retval;
a0d0e21e 1803 STRLEN blen;
c9cb0f41 1804 STRLEN orig_blen_bytes;
64a1bc8e 1805 const int op_type = PL_op->op_type;
c9cb0f41
NC		 1806 bool doing_utf8;
1807 U8 *tmpbuf = NULL;
64a1bc8e 1808
7452cf6a 1809 GV *const gv = (GV*)*++MARK;
14befaf4 1810 if (PL_op->op_type == OP_SYSWRITE
a79db61d
AL		 1811 && gv && (io = GvIO(gv))) {
1812 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
1813 if (mg) {
1814 SV *sv;
64a1bc8e 1815
a79db61d
AL		 1816 if (MARK == SP - 1) {
1817 EXTEND(SP, 1000);
1818 sv = sv_2mortal(newSViv(sv_len(*SP)));
1819 PUSHs(sv);
1820 PUTBACK;
1821 }
1822
1823 PUSHMARK(ORIGMARK);
1824 *(ORIGMARK+1) = SvTIED_obj((SV*)io, mg);
1825 ENTER;
1826 call_method("WRITE", G_SCALAR);
1827 LEAVE;
1828 SPAGAIN;
1829 sv = POPs;
1830 SP = ORIGMARK;
64a1bc8e 1831 PUSHs(sv);
a79db61d 1832 RETURN;
64a1bc8e 1833 }
1d603a67 1834 }
a0d0e21e
LW		 1835 if (!gv)
1836 goto say_undef;
64a1bc8e 1837
748a9306 1838 bufsv = *++MARK;
64a1bc8e 1839
748a9306 1840 SETERRNO(0,0);
a0d0e21e 1841 io = GvIO(gv);
cf167416 1842 if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
8c99d73e 1843 retval = -1;
cf167416
RGS		 1844 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
1845 if (io && IoIFP(io))
1846 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1847 else
1848 report_evil_fh(gv, io, PL_op->op_type);
1849 }
b5fe5ca2 1850 SETERRNO(EBADF,RMS_IFI);
7d59b7e4
NIS		 1851 goto say_undef;
1852 }
1853
c9cb0f41
NC		 1854 /* Do this first to trigger any overloading. */
1855 buffer = SvPV_const(bufsv, blen);
1856 orig_blen_bytes = blen;
1857 doing_utf8 = DO_UTF8(bufsv);
1858
7d59b7e4 1859 if (PerlIO_isutf8(IoIFP(io))) {
6aa2f6a7 1860 if (!SvUTF8(bufsv)) {
c9cb0f41
NC		 1861 /* We don't modify the original scalar. */
1862 tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
1863 buffer = (char *) tmpbuf;
1864 doing_utf8 = TRUE;
1865 }
a0d0e21e 1866 }
c9cb0f41
NC		 1867 else if (doing_utf8) {
1868 STRLEN tmplen = blen;
a79db61d 1869 U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
c9cb0f41
NC		 1870 if (!doing_utf8) {
1871 tmpbuf = result;
1872 buffer = (char *) tmpbuf;
1873 blen = tmplen;
1874 }
1875 else {
1876 assert((char *)result == buffer);
1877 Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
1878 }
7d59b7e4
NIS		 1879 }
1880
64a1bc8e 1881 if (op_type == OP_SYSWRITE) {
c9cb0f41
NC		 1882 Size_t length = 0; /* This length is in characters. */
1883 STRLEN blen_chars;
7d59b7e4 1884 IV offset;
c9cb0f41
NC		 1885
1886 if (doing_utf8) {
1887 if (tmpbuf) {
1888 /* The SV is bytes, and we've had to upgrade it. */
1889 blen_chars = orig_blen_bytes;
1890 } else {
1891 /* The SV really is UTF-8. */
1892 if (SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1893 /* Don't call sv_len_utf8 again because it will call magic
1894 or overloading a second time, and we might get back a
1895 different result. */
9a206dfd 1896 blen_chars = utf8_length((U8*)buffer, (U8*)buffer + blen);
c9cb0f41
NC		 1897 } else {
1898 /* It's safe, and it may well be cached. */
1899 blen_chars = sv_len_utf8(bufsv);
1900 }
1901 }
1902 } else {
1903 blen_chars = blen;
1904 }
1905
1906 if (MARK >= SP) {
1907 length = blen_chars;
1908 } else {
1909#if Size_t_size > IVSIZE
1910 length = (Size_t)SvNVx(*++MARK);
1911#else
1912 length = (Size_t)SvIVx(*++MARK);
1913#endif
4b0c4b6f
NC		 1914 if ((SSize_t)length < 0) {
1915 Safefree(tmpbuf);
c9cb0f41 1916 DIE(aTHX_ "Negative length");
4b0c4b6f 1917 }
7d59b7e4 1918 }
c9cb0f41 1919
bbce6d69 1920 if (MARK < SP) {
a0d0e21e 1921 offset = SvIVx(*++MARK);
bbce6d69 1922 if (offset < 0) {
4b0c4b6f
NC		 1923 if (-offset > (IV)blen_chars) {
1924 Safefree(tmpbuf);
cea2e8a9 1925 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1926 }
c9cb0f41 1927 offset += blen_chars;
4b0c4b6f
NC		 1928 } else if (offset >= (IV)blen_chars && blen_chars > 0) {
1929 Safefree(tmpbuf);
cea2e8a9 1930 DIE(aTHX_ "Offset outside string");
4b0c4b6f 1931 }
bbce6d69 1932 } else
a0d0e21e 1933 offset = 0;
c9cb0f41
NC		 1934 if (length > blen_chars - offset)
1935 length = blen_chars - offset;
1936 if (doing_utf8) {
1937 /* Here we convert length from characters to bytes. */
1938 if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
1939 /* Either we had to convert the SV, or the SV is magical, or
1940 the SV has overloading, in which case we can't or mustn't
1941 or mustn't call it again. */
1942
1943 buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
1944 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1945 } else {
1946 /* It's a real UTF-8 SV, and it's not going to change under
1947 us. Take advantage of any cache. */
1948 I32 start = offset;
1949 I32 len_I32 = length;
1950
1951 /* Convert the start and end character positions to bytes.
1952 Remember that the second argument to sv_pos_u2b is relative
1953 to the first. */
1954 sv_pos_u2b(bufsv, &start, &len_I32);
1955
1956 buffer += start;
1957 length = len_I32;
1958 }
7d59b7e4
NIS		 1959 }
1960 else {
1961 buffer = buffer+offset;
1962 }
a7092146 1963#ifdef PERL_SOCK_SYSWRITE_IS_SEND
50952442 1964 if (IoTYPE(io) == IoTYPE_SOCKET) {
8c99d73e 1965 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1966 buffer, length, 0);
a7092146
GS		 1967 }
1968 else
1969#endif
1970 {
94e4c244 1971 /* See the note at doio.c:do_print about filesize limits. --jhi */
8c99d73e 1972 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
7d59b7e4 1973 buffer, length);
a7092146 1974 }
a0d0e21e
LW		 1975 }
1976#ifdef HAS_SOCKET
64a1bc8e
NC		 1977 else {
1978 const int flags = SvIVx(*++MARK);
1979 if (SP > MARK) {
1980 STRLEN mlen;
1981 char * const sockbuf = SvPVx(*++MARK, mlen);
1982 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1983 flags, (struct sockaddr *)sockbuf, mlen);
1984 }
1985 else {
1986 retval
1987 = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
1988 }
a0d0e21e 1989 }
a0d0e21e
LW		 1990#else
1991 else
cea2e8a9 1992 DIE(aTHX_ PL_no_sock_func, "send");
a0d0e21e 1993#endif
c9cb0f41 1994
8c99d73e 1995 if (retval < 0)
a0d0e21e
LW		 1996 goto say_undef;
1997 SP = ORIGMARK;
c9cb0f41 1998 if (doing_utf8)
f36eea10 1999 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
4b0c4b6f 2000
a79db61d 2001 Safefree(tmpbuf);
8c99d73e
GS		 2002#if Size_t_size > IVSIZE
2003 PUSHn(retval);
2004#else
2005 PUSHi(retval);
2006#endif
a0d0e21e
LW		 2007 RETURN;
2008
2009 say_undef:
a79db61d 2010 Safefree(tmpbuf);
a0d0e21e
LW		 2011 SP = ORIGMARK;
2012 RETPUSHUNDEF;
2013}
2014
a0d0e21e
LW		 2015PP(pp_eof)
2016{
27da23d5 2017 dVAR; dSP;
a0d0e21e
LW		 2018 GV *gv;
2019
32da55ab 2020 if (MAXARG == 0) {
146174a9
CB		 2021 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
2022 IO *io;
ed2c6b9b 2023 gv = PL_last_in_gv = GvEGV(PL_argvgv);
146174a9
CB		 2024 io = GvIO(gv);
2025 if (io && !IoIFP(io)) {
2026 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
2027 IoLINES(io) = 0;
2028 IoFLAGS(io) &= ~IOf_START;
4608196e 2029 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL);
146174a9
CB		 2030 sv_setpvn(GvSV(gv), "-", 1);
2031 SvSETMAGIC(GvSV(gv));
2032 }
2033 else if (!nextargv(gv))
2034 RETPUSHYES;
2035 }
2036 }
2037 else
2038 gv = PL_last_in_gv; /* eof */
2039 }
a0d0e21e 2040 else
146174a9 2041 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
4592e6ca 2042
6136c704
AL		 2043 if (gv) {
2044 IO * const io = GvIO(gv);
2045 MAGIC * mg;
2046 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
2047 PUSHMARK(SP);
2048 XPUSHs(SvTIED_obj((SV*)io, mg));
2049 PUTBACK;
2050 ENTER;
2051 call_method("EOF", G_SCALAR);
2052 LEAVE;
2053 SPAGAIN;
2054 RETURN;
2055 }
4592e6ca
NIS		 2056 }
2057
54310121 2058 PUSHs(boolSV(!gv || do_eof(gv)));
a0d0e21e
LW		 2059 RETURN;
2060}
2061
2062PP(pp_tell)
2063{
27da23d5 2064 dVAR; dSP; dTARGET;
301e8125 2065 GV *gv;
5b468f54 2066 IO *io;
a0d0e21e 2067
c4420975
AL		 2068 if (MAXARG != 0)
2069 PL_last_in_gv = (GV*)POPs;
2070 gv = PL_last_in_gv;
4592e6ca 2071
a79db61d
AL		 2072 if (gv && (io = GvIO(gv))) {
2073 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
2074 if (mg) {
2075 PUSHMARK(SP);
2076 XPUSHs(SvTIED_obj((SV*)io, mg));
2077 PUTBACK;
2078 ENTER;
2079 call_method("TELL", G_SCALAR);
2080 LEAVE;
2081 SPAGAIN;
2082 RETURN;
2083 }
4592e6ca
NIS		 2084 }
2085
146174a9
CB		 2086#if LSEEKSIZE > IVSIZE
2087 PUSHn( do_tell(gv) );
2088#else
a0d0e21e 2089 PUSHi( do_tell(gv) );
146174a9 2090#endif
a0d0e21e
LW		 2091 RETURN;
2092}
2093
137443ea 2094PP(pp_sysseek)
2095{
27da23d5 2096 dVAR; dSP;
1df70142 2097 const int whence = POPi;
146174a9 2098#if LSEEKSIZE > IVSIZE
7452cf6a 2099 const Off_t offset = (Off_t)SvNVx(POPs);
146174a9 2100#else
7452cf6a 2101 const Off_t offset = (Off_t)SvIVx(POPs);
146174a9 2102#endif
a0d0e21e 2103
7452cf6a 2104 GV * const gv = PL_last_in_gv = (GV*)POPs;
a79db61d 2105 IO *io;
4592e6ca 2106
a79db61d
AL		 2107 if (gv && (io = GvIO(gv))) {
2108 MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
2109 if (mg) {
2110 PUSHMARK(SP);
2111 XPUSHs(SvTIED_obj((SV*)io, mg));
cb50131a 2112#if LSEEKSIZE > IVSIZE
a79db61d 2113 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
cb50131a 2114#else
a79db61d 2115 XPUSHs(sv_2mortal(newSViv(offset)));
cb50131a 2116#endif
a79db61d
AL		 2117 XPUSHs(sv_2mortal(newSViv(whence)));
2118 PUTBACK;
2119 ENTER;
2120 call_method("SEEK", G_SCALAR);
2121 LEAVE;
2122 SPAGAIN;
2123 RETURN;
2124 }
4592e6ca
NIS		 2125 }
2126
533c011a 2127 if (PL_op->op_type == OP_SEEK)
8903cb82 2128 PUSHs(boolSV(do_seek(gv, offset, whence)));
2129 else {
0bcc34c2 2130 const Off_t sought = do_sysseek(gv, offset, whence);
b448e4fe 2131 if (sought < 0)
146174a9
CB		 2132 PUSHs(&PL_sv_undef);
2133 else {
7452cf6a 2134 SV* const sv = sought ?
146174a9 2135#if LSEEKSIZE > IVSIZE
b448e4fe 2136 newSVnv((NV)sought)
146174a9 2137#else
b448e4fe 2138 newSViv(sought)
146174a9
CB		 2139#endif
2140 : newSVpvn(zero_but_true, ZBTLEN);
2141 PUSHs(sv_2mortal(sv));
2142 }
8903cb82 2143 }
a0d0e21e
LW		 2144 RETURN;
2145}
2146
2147PP(pp_truncate)
2148{
97aff369 2149 dVAR;
39644a26 2150 dSP;
8c99d73e
GS		 2151 /* There seems to be no consensus on the length type of truncate()
2152 * and ftruncate(), both off_t and size_t have supporters. In
2153 * general one would think that when using large files, off_t is
2154 * at least as wide as size_t, so using an off_t should be okay. */
2155 /* XXX Configure probe for the length type of *truncate() needed XXX */
0bcc34c2 2156 Off_t len;
a0d0e21e 2157
25342a55 2158#if Off_t_size > IVSIZE
0bcc34c2 2159 len = (Off_t)POPn;
8c99d73e 2160#else
0bcc34c2 2161 len = (Off_t)POPi;
8c99d73e
GS		 2162#endif
2163 /* Checking for length < 0 is problematic as the type might or
301e8125 2164 * might not be signed: if it is not, clever compilers will moan. */
8c99d73e 2165 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
748a9306 2166 SETERRNO(0,0);
d05c1ba0 2167 {
d05c1ba0
JH		 2168 int result = 1;
2169 GV *tmpgv;
090bf15b
SR		 2170 IO *io;
2171
d05c1ba0 2172 if (PL_op->op_flags & OPf_SPECIAL) {
f776e3cd 2173 tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
d05c1ba0 2174
090bf15b
SR		 2175 do_ftruncate_gv:
2176 if (!GvIO(tmpgv))
2177 result = 0;
d05c1ba0 2178 else {
090bf15b
SR		 2179 PerlIO *fp;
2180 io = GvIOp(tmpgv);
2181 do_ftruncate_io:
2182 TAINT_PROPER("truncate");
2183 if (!(fp = IoIFP(io))) {
2184 result = 0;
2185 }
2186 else {
2187 PerlIO_flush(fp);
cbdc8872 2188#ifdef HAS_TRUNCATE
090bf15b 2189 if (ftruncate(PerlIO_fileno(fp), len) < 0)
301e8125 2190#else
090bf15b 2191 if (my_chsize(PerlIO_fileno(fp), len) < 0)
cbdc8872 2192#endif
090bf15b
SR		 2193 result = 0;
2194 }
d05c1ba0 2195 }
cbdc8872 2196 }
d05c1ba0 2197 else {
7452cf6a 2198 SV * const sv = POPs;
83003860 2199 const char *name;
7a5fd60d 2200
d05c1ba0
JH		 2201 if (SvTYPE(sv) == SVt_PVGV) {
2202 tmpgv = (GV*)sv; /* *main::FRED for example */
090bf15b 2203 goto do_ftruncate_gv;
d05c1ba0
JH		 2204 }
2205 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2206 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
090bf15b
SR		 2207 goto do_ftruncate_gv;
2208 }
2209 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2210 io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
2211 goto do_ftruncate_io;
d05c1ba0 2212 }
1e422769 2213
83003860 2214 name = SvPV_nolen_const(sv);
d05c1ba0 2215 TAINT_PROPER("truncate");
cbdc8872 2216#ifdef HAS_TRUNCATE
d05c1ba0
JH		 2217 if (truncate(name, len) < 0)
2218 result = 0;
cbdc8872 2219#else
d05c1ba0 2220 {
7452cf6a 2221 const int tmpfd = PerlLIO_open(name, O_RDWR);
d05c1ba0 2222
7452cf6a 2223 if (tmpfd < 0)
cbdc8872 2224 result = 0;
d05c1ba0
JH		 2225 else {
2226 if (my_chsize(tmpfd, len) < 0)
2227 result = 0;
2228 PerlLIO_close(tmpfd);
2229 }
cbdc8872 2230 }
a0d0e21e 2231#endif
d05c1ba0 2232 }
a0d0e21e 2233
d05c1ba0
JH		 2234 if (result)
2235 RETPUSHYES;
2236 if (!errno)
93189314 2237 SETERRNO(EBADF,RMS_IFI);
d05c1ba0
JH		 2238 RETPUSHUNDEF;
2239 }
a0d0e21e
LW		 2240}
2241
a0d0e21e
LW		 2242PP(pp_ioctl)
2243{
97aff369 2244 dVAR; dSP; dTARGET;
7452cf6a 2245 SV * const argsv = POPs;
1df70142 2246 const unsigned int func = POPu;
e1ec3a88 2247 const int optype = PL_op->op_type;
7452cf6a 2248 GV * const gv = (GV*)POPs;
4608196e 2249 IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2250 char *s;
324aa91a 2251 IV retval;
a0d0e21e 2252
748a9306 2253 if (!io || !argsv || !IoIFP(io)) {
c289d2f7
JH		 2254 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2255 report_evil_fh(gv, io, PL_op->op_type);
93189314 2256 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
a0d0e21e
LW		 2257 RETPUSHUNDEF;
2258 }
2259
748a9306 2260 if (SvPOK(argsv) || !SvNIOK(argsv)) {
a0d0e21e 2261 STRLEN len;
324aa91a 2262 STRLEN need;
748a9306 2263 s = SvPV_force(argsv, len);
324aa91a
HF		 2264 need = IOCPARM_LEN(func);
2265 if (len < need) {
2266 s = Sv_Grow(argsv, need + 1);
2267 SvCUR_set(argsv, need);
a0d0e21e
LW		 2268 }
2269
748a9306 2270 s[SvCUR(argsv)] = 17; /* a little sanity check here */
a0d0e21e
LW		 2271 }
2272 else {
748a9306 2273 retval = SvIV(argsv);
c529f79d 2274 s = INT2PTR(char*,retval); /* ouch */
a0d0e21e
LW		 2275 }
2276
ed4b2e6b 2277 TAINT_PROPER(PL_op_desc[optype]);
a0d0e21e
LW		 2278
2279 if (optype == OP_IOCTL)
2280#ifdef HAS_IOCTL
76e3520e 2281 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
a0d0e21e 2282#else
cea2e8a9 2283 DIE(aTHX_ "ioctl is not implemented");
a0d0e21e
LW		 2284#endif
2285 else
c214f4ad
WB		 2286#ifndef HAS_FCNTL
2287 DIE(aTHX_ "fcntl is not implemented");
2288#else
55497cff 2289#if defined(OS2) && defined(__EMX__)
760ac839 2290 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
55497cff 2291#else
760ac839 2292 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
301e8125 2293#endif
6652bd42 2294#endif
a0d0e21e 2295
6652bd42 2296#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
748a9306
LW		 2297 if (SvPOK(argsv)) {
2298 if (s[SvCUR(argsv)] != 17)
cea2e8a9 2299 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
53e06cf0 2300 OP_NAME(PL_op));
748a9306
LW		 2301 s[SvCUR(argsv)] = 0; /* put our null back */
2302 SvSETMAGIC(argsv); /* Assume it has changed */
a0d0e21e
LW		 2303 }
2304
2305 if (retval == -1)
2306 RETPUSHUNDEF;
2307 if (retval != 0) {
2308 PUSHi(retval);
2309 }
2310 else {
8903cb82 2311 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e 2312 }
4808266b 2313#endif
c214f4ad 2314 RETURN;
a0d0e21e
LW		 2315}
2316
2317PP(pp_flock)
2318{
9cad6237 2319#ifdef FLOCK
97aff369 2320 dVAR; dSP; dTARGET;
a0d0e21e 2321 I32 value;
bc37a18f 2322 IO *io = NULL;
760ac839 2323 PerlIO *fp;
7452cf6a
AL		 2324 const int argtype = POPi;
2325 GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
16d20bd9 2326
bc37a18f
RG		 2327 if (gv && (io = GvIO(gv)))
2328 fp = IoIFP(io);
2329 else {
4608196e 2330 fp = NULL;
bc37a18f
RG		 2331 io = NULL;
2332 }
0bcc34c2 2333 /* XXX Looks to me like io is always NULL at this point */
a0d0e21e 2334 if (fp) {
68dc0745 2335 (void)PerlIO_flush(fp);
76e3520e 2336 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
a0d0e21e 2337 }
cb50131a 2338 else {
bc37a18f
RG		 2339 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2340 report_evil_fh(gv, io, PL_op->op_type);
a0d0e21e 2341 value = 0;
93189314 2342 SETERRNO(EBADF,RMS_IFI);
cb50131a 2343 }
a0d0e21e
LW		 2344 PUSHi(value);
2345 RETURN;
2346#else
cea2e8a9 2347 DIE(aTHX_ PL_no_func, "flock()");
a0d0e21e
LW		 2348#endif
2349}
2350
2351/* Sockets. */
2352
2353PP(pp_socket)
2354{
a0d0e21e 2355#ifdef HAS_SOCKET
97aff369 2356 dVAR; dSP;
7452cf6a
AL		 2357 const int protocol = POPi;
2358 const int type = POPi;
2359 const int domain = POPi;
2360 GV * const gv = (GV*)POPs;
2361 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e
LW		 2362 int fd;
2363
c289d2f7
JH		 2364 if (!gv || !io) {
2365 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2366 report_evil_fh(gv, io, PL_op->op_type);
5ee74a84 2367 if (io && IoIFP(io))
c289d2f7 2368 do_close(gv, FALSE);
93189314 2369 SETERRNO(EBADF,LIB_INVARG);
a0d0e21e
LW		 2370 RETPUSHUNDEF;
2371 }
2372
57171420
BS		 2373 if (IoIFP(io))
2374 do_close(gv, FALSE);
2375
a0d0e21e 2376 TAINT_PROPER("socket");
6ad3d225 2377 fd = PerlSock_socket(domain, type, protocol);
a0d0e21e
LW		 2378 if (fd < 0)
2379 RETPUSHUNDEF;
460c8493
IZ		 2380 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2381 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2382 IoTYPE(io) = IoTYPE_SOCKET;
a0d0e21e 2383 if (!IoIFP(io) || !IoOFP(io)) {
760ac839
LW		 2384 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2385 if (IoOFP(io)) PerlIO_close(IoOFP(io));
6ad3d225 2386 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
a0d0e21e
LW		 2387 RETPUSHUNDEF;
2388 }
8d2a6795
GS		 2389#if defined(HAS_FCNTL) && defined(F_SETFD)
2390 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2391#endif
a0d0e21e 2392
d5ff79b3
OF		 2393#ifdef EPOC
2394 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2395#endif
2396
a0d0e21e
LW		 2397 RETPUSHYES;
2398#else
cea2e8a9 2399 DIE(aTHX_ PL_no_sock_func, "socket");
a0d0e21e
LW		 2400#endif
2401}
2402
2403PP(pp_sockpair)
2404{
c95c94b1 2405#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
97aff369 2406 dVAR; dSP;
7452cf6a
AL		 2407 const int protocol = POPi;
2408 const int type = POPi;
2409 const int domain = POPi;
2410 GV * const gv2 = (GV*)POPs;
2411 GV * const gv1 = (GV*)POPs;
2412 register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
2413 register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
a0d0e21e
LW		 2414 int fd[2];
2415
c289d2f7
JH		 2416 if (!gv1 || !gv2 || !io1 || !io2) {
2417 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2418 if (!gv1 || !io1)
2419 report_evil_fh(gv1, io1, PL_op->op_type);
2420 if (!gv2 || !io2)
2421 report_evil_fh(gv1, io2, PL_op->op_type);
2422 }
5ee74a84 2423 if (io1 && IoIFP(io1))
c289d2f7 2424 do_close(gv1, FALSE);
5ee74a84 2425 if (io2 && IoIFP(io2))
c289d2f7 2426 do_close(gv2, FALSE);
a0d0e21e 2427 RETPUSHUNDEF;
c289d2f7 2428 }
a0d0e21e 2429
dc0d0a5f
JH		 2430 if (IoIFP(io1))
2431 do_close(gv1, FALSE);
2432 if (IoIFP(io2))
2433 do_close(gv2, FALSE);
57171420 2434
a0d0e21e 2435 TAINT_PROPER("socketpair");
6ad3d225 2436 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
a0d0e21e 2437 RETPUSHUNDEF;
460c8493
IZ		 2438 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2439 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
50952442 2440 IoTYPE(io1) = IoTYPE_SOCKET;
460c8493
IZ		 2441 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2442 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
50952442 2443 IoTYPE(io2) = IoTYPE_SOCKET;
a0d0e21e 2444 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
760ac839
LW		 2445 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2446 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
6ad3d225 2447 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
760ac839
LW		 2448 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2449 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
6ad3d225 2450 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
a0d0e21e
LW		 2451 RETPUSHUNDEF;
2452 }
8d2a6795
GS		 2453#if defined(HAS_FCNTL) && defined(F_SETFD)
2454 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2455 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2456#endif
a0d0e21e
LW		 2457
2458 RETPUSHYES;
2459#else
cea2e8a9 2460 DIE(aTHX_ PL_no_sock_func, "socketpair");
a0d0e21e
LW		 2461#endif
2462}
2463
2464PP(pp_bind)
2465{
a0d0e21e 2466#ifdef HAS_SOCKET
97aff369 2467 dVAR; dSP;
7452cf6a 2468 SV * const addrsv = POPs;
349d4f2f
NC		 2469 /* OK, so on what platform does bind modify addr? */
2470 const char *addr;
7452cf6a
AL		 2471 GV * const gv = (GV*)POPs;
2472 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 2473 STRLEN len;
2474
2475 if (!io || !IoIFP(io))
2476 goto nuts;
2477
349d4f2f 2478 addr = SvPV_const(addrsv, len);
a0d0e21e 2479 TAINT_PROPER("bind");
a79db61d 2480 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2481 RETPUSHYES;
2482 else
2483 RETPUSHUNDEF;
2484
2485nuts:
599cee73 2486 if (ckWARN(WARN_CLOSED))
bc37a18f 2487 report_evil_fh(gv, io, PL_op->op_type);
93189314 2488 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2489 RETPUSHUNDEF;
2490#else
cea2e8a9 2491 DIE(aTHX_ PL_no_sock_func, "bind");
a0d0e21e
LW		 2492#endif
2493}
2494
2495PP(pp_connect)
2496{
a0d0e21e 2497#ifdef HAS_SOCKET
97aff369 2498 dVAR; dSP;
7452cf6a
AL		 2499 SV * const addrsv = POPs;
2500 GV * const gv = (GV*)POPs;
2501 register IO * const io = GvIOn(gv);
349d4f2f 2502 const char *addr;
a0d0e21e
LW		 2503 STRLEN len;
2504
2505 if (!io || !IoIFP(io))
2506 goto nuts;
2507
349d4f2f 2508 addr = SvPV_const(addrsv, len);
a0d0e21e 2509 TAINT_PROPER("connect");
6ad3d225 2510 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
a0d0e21e
LW		 2511 RETPUSHYES;
2512 else
2513 RETPUSHUNDEF;
2514
2515nuts:
599cee73 2516 if (ckWARN(WARN_CLOSED))
bc37a18f 2517 report_evil_fh(gv, io, PL_op->op_type);
93189314 2518 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2519 RETPUSHUNDEF;
2520#else
cea2e8a9 2521 DIE(aTHX_ PL_no_sock_func, "connect");
a0d0e21e
LW		 2522#endif
2523}
2524
2525PP(pp_listen)
2526{
a0d0e21e 2527#ifdef HAS_SOCKET
97aff369 2528 dVAR; dSP;
7452cf6a
AL		 2529 const int backlog = POPi;
2530 GV * const gv = (GV*)POPs;
2531 register IO * const io = gv ? GvIOn(gv) : NULL;
a0d0e21e 2532
c289d2f7 2533 if (!gv || !io || !IoIFP(io))
a0d0e21e
LW		 2534 goto nuts;
2535
6ad3d225 2536 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
a0d0e21e
LW		 2537 RETPUSHYES;
2538 else
2539 RETPUSHUNDEF;
2540
2541nuts:
599cee73 2542 if (ckWARN(WARN_CLOSED))
bc37a18f 2543 report_evil_fh(gv, io, PL_op->op_type);
93189314 2544 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2545 RETPUSHUNDEF;
2546#else
cea2e8a9 2547 DIE(aTHX_ PL_no_sock_func, "listen");
a0d0e21e
LW		 2548#endif
2549}
2550
2551PP(pp_accept)
2552{
a0d0e21e 2553#ifdef HAS_SOCKET
97aff369 2554 dVAR; dSP; dTARGET;
a0d0e21e
LW		 2555 register IO *nstio;
2556 register IO *gstio;
93d47a36
JH		 2557 char namebuf[MAXPATHLEN];
2558#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2559 Sock_size_t len = sizeof (struct sockaddr_in);
2560#else
2561 Sock_size_t len = sizeof namebuf;
2562#endif
7452cf6a
AL		 2563 GV * const ggv = (GV*)POPs;
2564 GV * const ngv = (GV*)POPs;
a0d0e21e
LW		 2565 int fd;
2566
a0d0e21e
LW		 2567 if (!ngv)
2568 goto badexit;
2569 if (!ggv)
2570 goto nuts;
2571
2572 gstio = GvIO(ggv);
2573 if (!gstio || !IoIFP(gstio))
2574 goto nuts;
2575
2576 nstio = GvIOn(ngv);
93d47a36 2577 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
e294cc5d
JH		 2578#if defined(OEMVS)
2579 if (len == 0) {
2580 /* Some platforms indicate zero length when an AF_UNIX client is
2581 * not bound. Simulate a non-zero-length sockaddr structure in
2582 * this case. */
2583 namebuf[0] = 0; /* sun_len */
2584 namebuf[1] = AF_UNIX; /* sun_family */
2585 len = 2;
2586 }
2587#endif
2588
a0d0e21e
LW		 2589 if (fd < 0)
2590 goto badexit;
a70048fb
AB		 2591 if (IoIFP(nstio))
2592 do_close(ngv, FALSE);
460c8493
IZ		 2593 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2594 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
50952442 2595 IoTYPE(nstio) = IoTYPE_SOCKET;
a0d0e21e 2596 if (!IoIFP(nstio) || !IoOFP(nstio)) {
760ac839
LW		 2597 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2598 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
6ad3d225 2599 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
a0d0e21e
LW		 2600 goto badexit;
2601 }
8d2a6795
GS		 2602#if defined(HAS_FCNTL) && defined(F_SETFD)
2603 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2604#endif
a0d0e21e 2605
ed79a026 2606#ifdef EPOC
93d47a36 2607 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
a9f1f6b0 2608 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
ed79a026 2609#endif
381c1bae 2610#ifdef __SCO_VERSION__
93d47a36 2611 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
381c1bae 2612#endif
ed79a026 2613
93d47a36 2614 PUSHp(namebuf, len);
a0d0e21e
LW		 2615 RETURN;
2616
2617nuts:
599cee73 2618 if (ckWARN(WARN_CLOSED))
bc37a18f 2619 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
93189314 2620 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2621
2622badexit:
2623 RETPUSHUNDEF;
2624
2625#else
cea2e8a9 2626 DIE(aTHX_ PL_no_sock_func, "accept");
a0d0e21e
LW		 2627#endif
2628}
2629
2630PP(pp_shutdown)
2631{
a0d0e21e 2632#ifdef HAS_SOCKET
97aff369 2633 dVAR; dSP; dTARGET;
7452cf6a
AL		 2634 const int how = POPi;
2635 GV * const gv = (GV*)POPs;
2636 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 2637
2638 if (!io || !IoIFP(io))
2639 goto nuts;
2640
6ad3d225 2641 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
a0d0e21e
LW		 2642 RETURN;
2643
2644nuts:
599cee73 2645 if (ckWARN(WARN_CLOSED))
bc37a18f 2646 report_evil_fh(gv, io, PL_op->op_type);
93189314 2647 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2648 RETPUSHUNDEF;
2649#else
cea2e8a9 2650 DIE(aTHX_ PL_no_sock_func, "shutdown");
a0d0e21e
LW		 2651#endif
2652}
2653
a0d0e21e
LW		 2654PP(pp_ssockopt)
2655{
a0d0e21e 2656#ifdef HAS_SOCKET
97aff369 2657 dVAR; dSP;
7452cf6a 2658 const int optype = PL_op->op_type;
561b68a9 2659 SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
7452cf6a
AL		 2660 const unsigned int optname = (unsigned int) POPi;
2661 const unsigned int lvl = (unsigned int) POPi;
2662 GV * const gv = (GV*)POPs;
2663 register IO * const io = GvIOn(gv);
a0d0e21e 2664 int fd;
1e422769 2665 Sock_size_t len;
a0d0e21e 2666
a0d0e21e
LW		 2667 if (!io || !IoIFP(io))
2668 goto nuts;
2669
760ac839 2670 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2671 switch (optype) {
2672 case OP_GSOCKOPT:
748a9306 2673 SvGROW(sv, 257);
a0d0e21e 2674 (void)SvPOK_only(sv);
748a9306
LW		 2675 SvCUR_set(sv,256);
2676 *SvEND(sv) ='\0';
1e422769 2677 len = SvCUR(sv);
6ad3d225 2678 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
a0d0e21e 2679 goto nuts2;
1e422769 2680 SvCUR_set(sv, len);
748a9306 2681 *SvEND(sv) ='\0';
a0d0e21e
LW		 2682 PUSHs(sv);
2683 break;
2684 case OP_SSOCKOPT: {
1215b447
JH		 2685#if defined(__SYMBIAN32__)
2686# define SETSOCKOPT_OPTION_VALUE_T void *
2687#else
2688# define SETSOCKOPT_OPTION_VALUE_T const char *
2689#endif
2690 /* XXX TODO: We need to have a proper type (a Configure probe,
2691 * etc.) for what the C headers think of the third argument of
2692 * setsockopt(), the option_value read-only buffer: is it
2693 * a "char *", or a "void *", const or not. Some compilers
2694 * don't take kindly to e.g. assuming that "char *" implicitly
2695 * promotes to a "void *", or to explicitly promoting/demoting
2696 * consts to non/vice versa. The "const void *" is the SUS
2697 * definition, but that does not fly everywhere for the above
2698 * reasons. */
2699 SETSOCKOPT_OPTION_VALUE_T buf;
1e422769 2700 int aint;
2701 if (SvPOKp(sv)) {
2d8e6c8d 2702 STRLEN l;
1215b447 2703 buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
2d8e6c8d 2704 len = l;
1e422769 2705 }
56ee1660 2706 else {
a0d0e21e 2707 aint = (int)SvIV(sv);
1215b447 2708 buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
a0d0e21e
LW		 2709 len = sizeof(int);
2710 }
6ad3d225 2711 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
a0d0e21e 2712 goto nuts2;
3280af22 2713 PUSHs(&PL_sv_yes);
a0d0e21e
LW		 2714 }
2715 break;
2716 }
2717 RETURN;
2718
2719nuts:
599cee73 2720 if (ckWARN(WARN_CLOSED))
bc37a18f 2721 report_evil_fh(gv, io, optype);
93189314 2722 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2723nuts2:
2724 RETPUSHUNDEF;
2725
2726#else
af51a00e 2727 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2728#endif
2729}
2730
a0d0e21e
LW		 2731PP(pp_getpeername)
2732{
a0d0e21e 2733#ifdef HAS_SOCKET
97aff369 2734 dVAR; dSP;
7452cf6a
AL		 2735 const int optype = PL_op->op_type;
2736 GV * const gv = (GV*)POPs;
2737 register IO * const io = GvIOn(gv);
2738 Sock_size_t len;
a0d0e21e
LW		 2739 SV *sv;
2740 int fd;
a0d0e21e
LW		 2741
2742 if (!io || !IoIFP(io))
2743 goto nuts;
2744
561b68a9 2745 sv = sv_2mortal(newSV(257));
748a9306 2746 (void)SvPOK_only(sv);
1e422769 2747 len = 256;
2748 SvCUR_set(sv, len);
748a9306 2749 *SvEND(sv) ='\0';
760ac839 2750 fd = PerlIO_fileno(IoIFP(io));
a0d0e21e
LW		 2751 switch (optype) {
2752 case OP_GETSOCKNAME:
6ad3d225 2753 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e
LW		 2754 goto nuts2;
2755 break;
2756 case OP_GETPEERNAME:
6ad3d225 2757 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
a0d0e21e 2758 goto nuts2;
490ab354
JH		 2759#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2760 {
2761 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";
2762 /* If the call succeeded, make sure we don't have a zeroed port/addr */
349d4f2f 2763 if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
2fbb330f 2764 !memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
490ab354 2765 sizeof(u_short) + sizeof(struct in_addr))) {
301e8125 2766 goto nuts2;
490ab354
JH		 2767 }
2768 }
2769#endif
a0d0e21e
LW		 2770 break;
2771 }
13826f2c
CS		 2772#ifdef BOGUS_GETNAME_RETURN
2773 /* Interactive Unix, getpeername() and getsockname()
2774 does not return valid namelen */
1e422769 2775 if (len == BOGUS_GETNAME_RETURN)
2776 len = sizeof(struct sockaddr);
13826f2c 2777#endif
1e422769 2778 SvCUR_set(sv, len);
748a9306 2779 *SvEND(sv) ='\0';
a0d0e21e
LW		 2780 PUSHs(sv);
2781 RETURN;
2782
2783nuts:
599cee73 2784 if (ckWARN(WARN_CLOSED))
bc37a18f 2785 report_evil_fh(gv, io, optype);
93189314 2786 SETERRNO(EBADF,SS_IVCHAN);
a0d0e21e
LW		 2787nuts2:
2788 RETPUSHUNDEF;
2789
2790#else
af51a00e 2791 DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 2792#endif
2793}
2794
2795/* Stat calls. */
2796
a0d0e21e
LW		 2797PP(pp_stat)
2798{
97aff369 2799 dVAR;
39644a26 2800 dSP;
10edeb5d 2801 GV *gv = NULL;
ad02613c 2802 IO *io;
54310121 2803 I32 gimme;
a0d0e21e
LW		 2804 I32 max = 13;
2805
533c011a 2806 if (PL_op->op_flags & OPf_REF) {
2dd78f96 2807 gv = cGVOP_gv;
8a4e5b40 2808 if (PL_op->op_type == OP_LSTAT) {
5d3e98de 2809 if (gv != PL_defgv) {
5d329e6e 2810 do_fstat_warning_check:
5d3e98de 2811 if (ckWARN(WARN_IO))
9014280d 2812 Perl_warner(aTHX_ packWARN(WARN_IO),
38ddb0ef 2813 "lstat() on filehandle %s", gv ? GvENAME(gv) : "");
5d3e98de 2814 } else if (PL_laststype != OP_LSTAT)
8a4e5b40 2815 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
8a4e5b40
DD		 2816 }
2817
748a9306 2818 do_fstat:
2dd78f96 2819 if (gv != PL_defgv) {
3280af22 2820 PL_laststype = OP_STAT;
2dd78f96 2821 PL_statgv = gv;
c69006e4 2822 sv_setpvn(PL_statname, "", 0);
5228a96c 2823 if(gv) {
ad02613c
SP		 2824 io = GvIO(gv);
2825 do_fstat_have_io:
5228a96c
SP		 2826 if (io) {
2827 if (IoIFP(io)) {
2828 PL_laststatval =
2829 PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
2830 } else if (IoDIRP(io)) {
2831#ifdef HAS_DIRFD
2832 PL_laststatval =
2833 PerlLIO_fstat(dirfd(IoDIRP(io)), &PL_statcache);
2834#else
2835 DIE(aTHX_ PL_no_func, "dirfd");
2836#endif
2837 } else {
2838 PL_laststatval = -1;
2839 }
2840 }
2841 }
2842 }
2843
9ddeeac9 2844 if (PL_laststatval < 0) {
2dd78f96
JH		 2845 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2846 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
a0d0e21e 2847 max = 0;
9ddeeac9 2848 }
a0d0e21e
LW		 2849 }
2850 else {
7452cf6a 2851 SV* const sv = POPs;
748a9306 2852 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 2853 gv = (GV*)sv;
748a9306 2854 goto do_fstat;
ad02613c
SP		 2855 } else if(SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2856 gv = (GV*)SvRV(sv);
2857 if (PL_op->op_type == OP_LSTAT)
2858 goto do_fstat_warning_check;
2859 goto do_fstat;
2860 } else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2861 io = (IO*)SvRV(sv);
2862 if (PL_op->op_type == OP_LSTAT)
2863 goto do_fstat_warning_check;
2864 goto do_fstat_have_io;
2865 }
2866
0510663f 2867 sv_setpv(PL_statname, SvPV_nolen_const(sv));
a0714e2c 2868 PL_statgv = NULL;
533c011a
NIS		 2869 PL_laststype = PL_op->op_type;
2870 if (PL_op->op_type == OP_LSTAT)
0510663f 2871 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
a0d0e21e 2872 else
0510663f 2873 PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
3280af22 2874 if (PL_laststatval < 0) {
0510663f 2875 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
9014280d 2876 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
a0d0e21e
LW		 2877 max = 0;
2878 }
2879 }
2880
54310121 2881 gimme = GIMME_V;
2882 if (gimme != G_ARRAY) {
2883 if (gimme != G_VOID)
2884 XPUSHs(boolSV(max));
2885 RETURN;
a0d0e21e
LW		 2886 }
2887 if (max) {
36477c24 2888 EXTEND(SP, max);
2889 EXTEND_MORTAL(max);
1ff81528
PL		 2890 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2891 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
b448e4fe
JH		 2892 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2893 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
146174a9
CB		 2894#if Uid_t_size > IVSIZE
2895 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2896#else
23dcd6c8 2897# if Uid_t_sign <= 0
1ff81528 2898 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
23dcd6c8
JH		 2899# else
2900 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2901# endif
146174a9 2902#endif
301e8125 2903#if Gid_t_size > IVSIZE
146174a9
CB		 2904 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2905#else
23dcd6c8 2906# if Gid_t_sign <= 0
1ff81528 2907 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
23dcd6c8
JH		 2908# else
2909 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2910# endif
146174a9 2911#endif
cbdc8872 2912#ifdef USE_STAT_RDEV
1ff81528 2913 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
cbdc8872 2914#else
396482e1 2915 PUSHs(sv_2mortal(newSVpvs("")));
cbdc8872 2916#endif
146174a9 2917#if Off_t_size > IVSIZE
4a9d6100 2918 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
146174a9 2919#else
1ff81528 2920 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
146174a9 2921#endif
cbdc8872 2922#ifdef BIG_TIME
172ae379
JH		 2923 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2924 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2925 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
cbdc8872 2926#else
aebaba0b
SH		 2927 PUSHs(sv_2mortal(newSViv((IV)PL_statcache.st_atime)));
2928 PUSHs(sv_2mortal(newSViv((IV)PL_statcache.st_mtime)));
2929 PUSHs(sv_2mortal(newSViv((IV)PL_statcache.st_ctime)));
cbdc8872 2930#endif
a0d0e21e 2931#ifdef USE_STAT_BLOCKS
b448e4fe
JH		 2932 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2933 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
a0d0e21e 2934#else
396482e1
GA		 2935 PUSHs(sv_2mortal(newSVpvs("")));
2936 PUSHs(sv_2mortal(newSVpvs("")));
a0d0e21e
LW		 2937#endif
2938 }
2939 RETURN;
2940}
2941
fbb0b3b3
RGS		 2942/* This macro is used by the stacked filetest operators :
2943 * if the previous filetest failed, short-circuit and pass its value.
2944 * Else, discard it from the stack and continue. --rgs
2945 */
2946#define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
2947 if (TOPs == &PL_sv_no || TOPs == &PL_sv_undef) { RETURN; } \
2948 else { (void)POPs; PUTBACK; } \
2949 }
2950
a0d0e21e
LW		 2951PP(pp_ftrread)
2952{
97aff369 2953 dVAR;
9cad6237 2954 I32 result;
af9e49b4
NC		 2955 /* Not const, because things tweak this below. Not bool, because there's
2956 no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
2957#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2958 I32 use_access = PL_op->op_private & OPpFT_ACCESS;
2959 /* Giving some sort of initial value silences compilers. */
2960# ifdef R_OK
2961 int access_mode = R_OK;
2962# else
2963 int access_mode = 0;
2964# endif
5ff3f7a4 2965#else
af9e49b4
NC		 2966 /* access_mode is never used, but leaving use_access in makes the
2967 conditional compiling below much clearer. */
2968 I32 use_access = 0;
5ff3f7a4 2969#endif
af9e49b4 2970 int stat_mode = S_IRUSR;
a0d0e21e 2971
af9e49b4 2972 bool effective = FALSE;
2a3ff820 2973 dSP;
af9e49b4 2974
fbb0b3b3 2975 STACKED_FTEST_CHECK;
af9e49b4
NC		 2976
2977 switch (PL_op->op_type) {
2978 case OP_FTRREAD:
2979#if !(defined(HAS_ACCESS) && defined(R_OK))
2980 use_access = 0;
2981#endif
2982 break;
2983
2984 case OP_FTRWRITE:
5ff3f7a4 2985#if defined(HAS_ACCESS) && defined(W_OK)
af9e49b4 2986 access_mode = W_OK;
5ff3f7a4 2987#else
af9e49b4 2988 use_access = 0;
5ff3f7a4 2989#endif
af9e49b4
NC		 2990 stat_mode = S_IWUSR;
2991 break;
a0d0e21e 2992
af9e49b4 2993 case OP_FTREXEC:
5ff3f7a4 2994#if defined(HAS_ACCESS) && defined(X_OK)
af9e49b4 2995 access_mode = X_OK;
5ff3f7a4 2996#else
af9e49b4 2997 use_access = 0;
5ff3f7a4 2998#endif
af9e49b4
NC		 2999 stat_mode = S_IXUSR;
3000 break;
a0d0e21e 3001
af9e49b4 3002 case OP_FTEWRITE:
faee0e31 3003#ifdef PERL_EFF_ACCESS
af9e49b4 3004 access_mode = W_OK;
5ff3f7a4 3005#endif
af9e49b4
NC		 3006 stat_mode = S_IWUSR;
3007 /* Fall through */
a0d0e21e 3008
af9e49b4
NC		 3009 case OP_FTEREAD:
3010#ifndef PERL_EFF_ACCESS
3011 use_access = 0;
3012#endif
3013 effective = TRUE;
3014 break;
3015
3016
3017 case OP_FTEEXEC:
faee0e31 3018#ifdef PERL_EFF_ACCESS
af9e49b4 3019 access_mode = W_OK;
5ff3f7a4 3020#else
af9e49b4 3021 use_access = 0;
5ff3f7a4 3022#endif
af9e49b4
NC		 3023 stat_mode = S_IXUSR;
3024 effective = TRUE;
3025 break;
3026 }
a0d0e21e 3027
af9e49b4
NC		 3028 if (use_access) {
3029#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
2c2f35ab 3030 const char *name = POPpx;
af9e49b4
NC		 3031 if (effective) {
3032# ifdef PERL_EFF_ACCESS
3033 result = PERL_EFF_ACCESS(name, access_mode);
3034# else
3035 DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
3036 OP_NAME(PL_op));
3037# endif
3038 }
3039 else {
3040# ifdef HAS_ACCESS
3041 result = access(name, access_mode);
3042# else
3043 DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
3044# endif
3045 }
5ff3f7a4
GS		 3046 if (result == 0)
3047 RETPUSHYES;
3048 if (result < 0)
3049 RETPUSHUNDEF;
3050 RETPUSHNO;
af9e49b4 3051#endif
22865c03 3052 }
af9e49b4 3053
cea2e8a9 3054 result = my_stat();
22865c03 3055 SPAGAIN;
a0d0e21e
LW		 3056 if (result < 0)
3057 RETPUSHUNDEF;
af9e49b4 3058 if (cando(stat_mode, effective, &PL_statcache))
a0d0e21e
LW		 3059 RETPUSHYES;
3060 RETPUSHNO;
3061}
3062
3063PP(pp_ftis)
3064{
97aff369 3065 dVAR;
fbb0b3b3 3066 I32 result;
d7f0a2f4 3067 const int op_type = PL_op->op_type;
2a3ff820 3068 dSP;
fbb0b3b3
RGS		 3069 STACKED_FTEST_CHECK;
3070 result = my_stat();
3071 SPAGAIN;
a0d0e21e
LW		 3072 if (result < 0)
3073 RETPUSHUNDEF;
d7f0a2f4
NC		 3074 if (op_type == OP_FTIS)
3075 RETPUSHYES;
957b0e1d 3076 {
d7f0a2f4
NC		 3077 /* You can't dTARGET inside OP_FTIS, because you'll get
3078 "panic: pad_sv po" - the op is not flagged to have a target. */
957b0e1d 3079 dTARGET;
d7f0a2f4 3080 switch (op_type) {
957b0e1d
NC		 3081 case OP_FTSIZE:
3082#if Off_t_size > IVSIZE
3083 PUSHn(PL_statcache.st_size);
3084#else
3085 PUSHi(PL_statcache.st_size);
3086#endif
3087 break;
3088 case OP_FTMTIME:
3089 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
3090 break;
3091 case OP_FTATIME:
3092 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
3093 break;
3094 case OP_FTCTIME:
3095 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
3096 break;
3097 }
3098 }
3099 RETURN;
a0d0e21e
LW		 3100}
3101
a0d0e21e
LW		 3102PP(pp_ftrowned)
3103{
97aff369 3104 dVAR;
fbb0b3b3 3105 I32 result;
2a3ff820 3106 dSP;
17ad201a
NC		 3107
3108 /* I believe that all these three are likely to be defined on most every
3109 system these days. */
3110#ifndef S_ISUID
3111 if(PL_op->op_type == OP_FTSUID)
3112 RETPUSHNO;
3113#endif
3114#ifndef S_ISGID
3115 if(PL_op->op_type == OP_FTSGID)
3116 RETPUSHNO;
3117#endif
3118#ifndef S_ISVTX
3119 if(PL_op->op_type == OP_FTSVTX)
3120 RETPUSHNO;
3121#endif
3122
fbb0b3b3
RGS		 3123 STACKED_FTEST_CHECK;
3124 result = my_stat();
3125 SPAGAIN;
a0d0e21e
LW		 3126 if (result < 0)
3127 RETPUSHUNDEF;
f1cb2d48
NC		 3128 switch (PL_op->op_type) {
3129 case OP_FTROWNED:
9ab9fa88 3130 if (PL_statcache.st_uid == PL_uid)
f1cb2d48
NC		 3131 RETPUSHYES;
3132 break;
3133 case OP_FTEOWNED:
3134 if (PL_statcache.st_uid == PL_euid)
3135 RETPUSHYES;
3136 break;
3137 case OP_FTZERO:
3138 if (PL_statcache.st_size == 0)
3139 RETPUSHYES;
3140 break;
3141 case OP_FTSOCK:
3142 if (S_ISSOCK(PL_statcache.st_mode))
3143 RETPUSHYES;
3144 break;
3145 case OP_FTCHR:
3146 if (S_ISCHR(PL_statcache.st_mode))
3147 RETPUSHYES;
3148 break;
3149 case OP_FTBLK:
3150 if (S_ISBLK(PL_statcache.st_mode))
3151 RETPUSHYES;
3152 break;
3153 case OP_FTFILE:
3154 if (S_ISREG(PL_statcache.st_mode))
3155 RETPUSHYES;
3156 break;
3157 case OP_FTDIR:
3158 if (S_ISDIR(PL_statcache.st_mode))
3159 RETPUSHYES;
3160 break;
3161 case OP_FTPIPE:
3162 if (S_ISFIFO(PL_statcache.st_mode))
3163 RETPUSHYES;
3164 break;
a0d0e21e 3165#ifdef S_ISUID
17ad201a
NC		 3166 case OP_FTSUID:
3167 if (PL_statcache.st_mode & S_ISUID)
3168 RETPUSHYES;
3169 break;
a0d0e21e 3170#endif
a0d0e21e 3171#ifdef S_ISGID
17ad201a
NC		 3172 case OP_FTSGID:
3173 if (PL_statcache.st_mode & S_ISGID)
3174 RETPUSHYES;
3175 break;
3176#endif
3177#ifdef S_ISVTX
3178 case OP_FTSVTX:
3179 if (PL_statcache.st_mode & S_ISVTX)
3180 RETPUSHYES;
3181 break;
a0d0e21e 3182#endif
17ad201a 3183 }
a0d0e21e
LW		 3184 RETPUSHNO;
3185}
3186
17ad201a 3187PP(pp_ftlink)
a0d0e21e 3188{
97aff369 3189 dVAR;
17ad201a 3190 I32 result = my_lstat();
39644a26 3191 dSP;
a0d0e21e
LW		 3192 if (result < 0)
3193 RETPUSHUNDEF;
17ad201a 3194 if (S_ISLNK(PL_statcache.st_mode))
a0d0e21e 3195 RETPUSHYES;
a0d0e21e
LW		 3196 RETPUSHNO;
3197}
3198
3199PP(pp_fttty)
3200{
97aff369 3201 dVAR;
39644a26 3202 dSP;
a0d0e21e
LW		 3203 int fd;
3204 GV *gv;
a0714e2c 3205 SV *tmpsv = NULL;
fb73857a 3206
fbb0b3b3
RGS		 3207 STACKED_FTEST_CHECK;
3208
533c011a 3209 if (PL_op->op_flags & OPf_REF)
146174a9 3210 gv = cGVOP_gv;
fb73857a 3211 else if (isGV(TOPs))
3212 gv = (GV*)POPs;
3213 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3214 gv = (GV*)SvRV(POPs);
a0d0e21e 3215 else
f776e3cd 3216 gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
fb73857a 3217
a0d0e21e 3218 if (GvIO(gv) && IoIFP(GvIOp(gv)))
760ac839 3219 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
7a5fd60d 3220 else if (tmpsv && SvOK(tmpsv)) {
349d4f2f 3221 const char *tmps = SvPV_nolen_const(tmpsv);
7a5fd60d
NC		 3222 if (isDIGIT(*tmps))
3223 fd = atoi(tmps);
3224 else
3225 RETPUSHUNDEF;
3226 }
a0d0e21e
LW		 3227 else
3228 RETPUSHUNDEF;
6ad3d225 3229 if (PerlLIO_isatty(fd))
a0d0e21e
LW		 3230 RETPUSHYES;
3231 RETPUSHNO;
3232}
3233
16d20bd9
AD		 3234#if defined(atarist) /* this will work with atariST. Configure will
3235 make guesses for other systems. */
3236# define FILE_base(f) ((f)->_base)
3237# define FILE_ptr(f) ((f)->_ptr)
3238# define FILE_cnt(f) ((f)->_cnt)
3239# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
a0d0e21e
LW		 3240#endif
3241
3242PP(pp_fttext)
3243{
97aff369 3244 dVAR;
39644a26 3245 dSP;
a0d0e21e
LW		 3246 I32 i;
3247 I32 len;
3248 I32 odd = 0;
3249 STDCHAR tbuf[512];
3250 register STDCHAR *s;
3251 register IO *io;
5f05dabc 3252 register SV *sv;
3253 GV *gv;
146174a9 3254 PerlIO *fp;
a0d0e21e 3255
fbb0b3b3
RGS		 3256 STACKED_FTEST_CHECK;
3257
533c011a 3258 if (PL_op->op_flags & OPf_REF)
146174a9 3259 gv = cGVOP_gv;
5f05dabc 3260 else if (isGV(TOPs))
3261 gv = (GV*)POPs;
3262 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3263 gv = (GV*)SvRV(POPs);
3264 else
a0714e2c 3265 gv = NULL;
5f05dabc 3266
3267 if (gv) {
a0d0e21e 3268 EXTEND(SP, 1);
3280af22
NIS		 3269 if (gv == PL_defgv) {
3270 if (PL_statgv)
3271 io = GvIO(PL_statgv);
a0d0e21e 3272 else {
3280af22 3273 sv = PL_statname;
a0d0e21e
LW		 3274 goto really_filename;
3275 }
3276 }
3277 else {
3280af22
NIS		 3278 PL_statgv = gv;
3279 PL_laststatval = -1;
c69006e4 3280 sv_setpvn(PL_statname, "", 0);
3280af22 3281 io = GvIO(PL_statgv);
a0d0e21e
LW		 3282 }
3283 if (io && IoIFP(io)) {
5f05dabc 3284 if (! PerlIO_has_base(IoIFP(io)))
cea2e8a9 3285 DIE(aTHX_ "-T and -B not implemented on filehandles");
3280af22
NIS		 3286 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3287 if (PL_laststatval < 0)
5f05dabc 3288 RETPUSHUNDEF;
9cbac4c7 3289 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
533c011a 3290 if (PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3291 RETPUSHNO;
3292 else
3293 RETPUSHYES;
9cbac4c7 3294 }
a20bf0c3 3295 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
760ac839 3296 i = PerlIO_getc(IoIFP(io));
a0d0e21e 3297 if (i != EOF)
760ac839 3298 (void)PerlIO_ungetc(IoIFP(io),i);
a0d0e21e 3299 }
a20bf0c3 3300 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
a0d0e21e 3301 RETPUSHYES;
a20bf0c3
JH		 3302 len = PerlIO_get_bufsiz(IoIFP(io));
3303 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
760ac839
LW		 3304 /* sfio can have large buffers - limit to 512 */
3305 if (len > 512)
3306 len = 512;
a0d0e21e
LW		 3307 }
3308 else {
2dd78f96 3309 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
146174a9 3310 gv = cGVOP_gv;
2dd78f96 3311 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
146174a9 3312 }
93189314 3313 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 3314 RETPUSHUNDEF;
3315 }
3316 }
3317 else {
3318 sv = POPs;
5f05dabc 3319 really_filename:
a0714e2c 3320 PL_statgv = NULL;
5c9aa243 3321 PL_laststype = OP_STAT;
d5263905 3322 sv_setpv(PL_statname, SvPV_nolen_const(sv));
aa07b2f6 3323 if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
349d4f2f
NC		 3324 if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
3325 '\n'))
9014280d 3326 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
a0d0e21e
LW		 3327 RETPUSHUNDEF;
3328 }
146174a9
CB		 3329 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3330 if (PL_laststatval < 0) {
3331 (void)PerlIO_close(fp);
5f05dabc 3332 RETPUSHUNDEF;
146174a9 3333 }
bd61b366 3334 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, NULL);
146174a9
CB		 3335 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3336 (void)PerlIO_close(fp);
a0d0e21e 3337 if (len <= 0) {
533c011a 3338 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
a0d0e21e
LW		 3339 RETPUSHNO; /* special case NFS directories */
3340 RETPUSHYES; /* null file is anything */
3341 }
3342 s = tbuf;
3343 }
3344
3345 /* now scan s to look for textiness */
4633a7c4 3346 /* XXX ASCII dependent code */
a0d0e21e 3347
146174a9
CB		 3348#if defined(DOSISH) || defined(USEMYBINMODE)
3349 /* ignore trailing ^Z on short files */
58c0efa5 3350 if (len && len < (I32)sizeof(tbuf) && tbuf[len-1] == 26)
146174a9
CB		 3351 --len;
3352#endif
3353
a0d0e21e
LW		 3354 for (i = 0; i < len; i++, s++) {
3355 if (!*s) { /* null never allowed in text */
3356 odd += len;
3357 break;
3358 }
9d116dd7 3359#ifdef EBCDIC
301e8125 3360 else if (!(isPRINT(*s) || isSPACE(*s)))
9d116dd7
JH		 3361 odd++;
3362#else
146174a9
CB		 3363 else if (*s & 128) {
3364#ifdef USE_LOCALE
2de3dbcc 3365 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
b3f66c68
GS		 3366 continue;
3367#endif
3368 /* utf8 characters don't count as odd */
fd400ab9 3369 if (UTF8_IS_START(*s)) {
b3f66c68
GS		 3370 int ulen = UTF8SKIP(s);
3371 if (ulen < len - i) {
3372 int j;
3373 for (j = 1; j < ulen; j++) {
fd400ab9 3374 if (!UTF8_IS_CONTINUATION(s[j]))
b3f66c68
GS		 3375 goto not_utf8;
3376 }
3377 --ulen; /* loop does extra increment */
3378 s += ulen;
3379 i += ulen;
3380 continue;
3381 }
3382 }
3383 not_utf8:
3384 odd++;
146174a9 3385 }
a0d0e21e
LW		 3386 else if (*s < 32 &&
3387 *s != '\n' && *s != '\r' && *s != '\b' &&
3388 *s != '\t' && *s != '\f' && *s != 27)
3389 odd++;
9d116dd7 3390#endif
a0d0e21e
LW		 3391 }
3392
533c011a 3393 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
a0d0e21e
LW		 3394 RETPUSHNO;
3395 else
3396 RETPUSHYES;
3397}
3398
a0d0e21e
LW		 3399/* File calls. */
3400
3401PP(pp_chdir)
3402{
97aff369 3403 dVAR; dSP; dTARGET;
c445ea15 3404 const char *tmps = NULL;
9a957fbc 3405 GV *gv = NULL;
a0d0e21e 3406
c4aca7d0 3407 if( MAXARG == 1 ) {
9a957fbc 3408 SV * const sv = POPs;
d4ac975e
GA		 3409 if (PL_op->op_flags & OPf_SPECIAL) {
3410 gv = gv_fetchsv(sv, 0, SVt_PVIO);
3411 }
3412 else if (SvTYPE(sv) == SVt_PVGV) {
c4aca7d0
GA		 3413 gv = (GV*)sv;
3414 }
3415 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
3416 gv = (GV*)SvRV(sv);
3417 }
3418 else {
3419 tmps = SvPVx_nolen_const(sv);
3420 }
3421 }
35ae6b54 3422
c4aca7d0 3423 if( !gv && (!tmps || !*tmps) ) {
9a957fbc
AL		 3424 HV * const table = GvHVn(PL_envgv);
3425 SV **svp;
3426
a4fc7abc
AL		 3427 if ( (svp = hv_fetchs(table, "HOME", FALSE))
3428 || (svp = hv_fetchs(table, "LOGDIR", FALSE))
491527d0 3429#ifdef VMS
a4fc7abc 3430 || (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
491527d0 3431#endif
35ae6b54
MS		 3432 )
3433 {
3434 if( MAXARG == 1 )
9014280d 3435 deprecate("chdir('') or chdir(undef) as chdir()");
8c074e2a 3436 tmps = SvPV_nolen_const(*svp);
35ae6b54 3437 }
72f496dc 3438 else {
389ec635 3439 PUSHi(0);
b7ab37f8 3440 TAINT_PROPER("chdir");
389ec635
MS		 3441 RETURN;
3442 }
8ea155d1 3443 }
8ea155d1 3444
a0d0e21e 3445 TAINT_PROPER("chdir");
c4aca7d0
GA		 3446 if (gv) {
3447#ifdef HAS_FCHDIR
9a957fbc 3448 IO* const io = GvIO(gv);
c4aca7d0 3449 if (io) {
c08d6937 3450 if (IoDIRP(io)) {
c4aca7d0
GA		 3451#ifdef HAS_DIRFD
3452 PUSHi(fchdir(dirfd(IoDIRP(io))) >= 0);
3453#else
0f1f2428 3454 DIE(aTHX_ PL_no_func, "dirfd");
c4aca7d0 3455#endif
c08d6937
SP		 3456 } else if (IoIFP(io)) {
3457 PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
c4aca7d0
GA		 3458 }
3459 else {
4dc171f0
PD		 3460 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3461 report_evil_fh(gv, io, PL_op->op_type);
3462 SETERRNO(EBADF, RMS_IFI);
c4aca7d0
GA		 3463 PUSHi(0);
3464 }
3465 }
3466 else {
4dc171f0
PD		 3467 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
3468 report_evil_fh(gv, io, PL_op->op_type);
3469 SETERRNO(EBADF,RMS_IFI);
c4aca7d0
GA		 3470 PUSHi(0);
3471 }
3472#else
3473 DIE(aTHX_ PL_no_func, "fchdir");
3474#endif
3475 }
3476 else
b8ffc8df 3477 PUSHi( PerlDir_chdir(tmps) >= 0 );
748a9306
LW		 3478#ifdef VMS
3479 /* Clear the DEFAULT element of ENV so we'll get the new value
3480 * in the future. */
6b88bc9c 3481 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
748a9306 3482#endif
a0d0e21e
LW		 3483 RETURN;
3484}
3485
3486PP(pp_chown)
3487{
97aff369 3488 dVAR; dSP; dMARK; dTARGET;
605b9385 3489 const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
76ffd3b9 3490
a0d0e21e 3491 SP = MARK;
b59aed67 3492 XPUSHi(value);
a0d0e21e 3493 RETURN;
a0d0e21e
LW		 3494}
3495
3496PP(pp_chroot)
3497{
a0d0e21e 3498#ifdef HAS_CHROOT
97aff369 3499 dVAR; dSP; dTARGET;
7452cf6a 3500 char * const tmps = POPpx;
a0d0e21e
LW		 3501 TAINT_PROPER("chroot");
3502 PUSHi( chroot(tmps) >= 0 );
3503 RETURN;
3504#else
cea2e8a9 3505 DIE(aTHX_ PL_no_func, "chroot");
a0d0e21e
LW		 3506#endif
3507}
3508
a0d0e21e
LW		 3509PP(pp_rename)
3510{
97aff369 3511 dVAR; dSP; dTARGET;
a0d0e21e 3512 int anum;
7452cf6a
AL		 3513 const char * const tmps2 = POPpconstx;
3514 const char * const tmps = SvPV_nolen_const(TOPs);
a0d0e21e
LW		 3515 TAINT_PROPER("rename");
3516#ifdef HAS_RENAME
baed7233 3517 anum = PerlLIO_rename(tmps, tmps2);
a0d0e21e 3518#else
6b88bc9c 3519 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
ed969818
W		 3520 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3521 anum = 1;
3522 else {
3654eb6c 3523 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
ed969818
W		 3524 (void)UNLINK(tmps2);
3525 if (!(anum = link(tmps, tmps2)))
3526 anum = UNLINK(tmps);
3527 }
a0d0e21e
LW		 3528 }
3529#endif
3530 SETi( anum >= 0 );
3531 RETURN;
3532}
3533
ce6987d0 3534#if defined(HAS_LINK) || defined(HAS_SYMLINK)
a0d0e21e
LW		 3535PP(pp_link)
3536{
97aff369 3537 dVAR; dSP; dTARGET;
ce6987d0
NC		 3538 const int op_type = PL_op->op_type;
3539 int result;
a0d0e21e 3540
ce6987d0
NC		 3541# ifndef HAS_LINK
3542 if (op_type == OP_LINK)
3543 DIE(aTHX_ PL_no_func, "link");
3544# endif
3545# ifndef HAS_SYMLINK
3546 if (op_type == OP_SYMLINK)
3547 DIE(aTHX_ PL_no_func, "symlink");
3548# endif
3549
3550 {
7452cf6a
AL		 3551 const char * const tmps2 = POPpconstx;
3552 const char * const tmps = SvPV_nolen_const(TOPs);
ce6987d0
NC		 3553 TAINT_PROPER(PL_op_desc[op_type]);
3554 result =
3555# if defined(HAS_LINK)
3556# if defined(HAS_SYMLINK)
3557 /* Both present - need to choose which. */
3558 (op_type == OP_LINK) ?
3559 PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
3560# else
4a8ebb7f
SH		 3561 /* Only have link, so calls to pp_symlink will have DIE()d above. */
3562 PerlLIO_link(tmps, tmps2);
ce6987d0
NC		 3563# endif
3564# else
3565# if defined(HAS_SYMLINK)
4a8ebb7f
SH		 3566 /* Only have symlink, so calls to pp_link will have DIE()d above. */
3567 symlink(tmps, tmps2);
ce6987d0
NC		 3568# endif
3569# endif
3570 }
3571
3572 SETi( result >= 0 );
a0d0e21e 3573 RETURN;
ce6987d0 3574}
a0d0e21e 3575#else
ce6987d0
NC		 3576PP(pp_link)
3577{
3578 /* Have neither. */
3579 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e 3580}
ce6987d0 3581#endif
a0d0e21e
LW		 3582
3583PP(pp_readlink)
3584{
97aff369 3585 dVAR;
76ffd3b9 3586 dSP;
a0d0e21e 3587#ifdef HAS_SYMLINK
76ffd3b9 3588 dTARGET;
10516c54 3589 const char *tmps;
46fc3d4c 3590 char buf[MAXPATHLEN];
a0d0e21e 3591 int len;
46fc3d4c 3592
fb73857a 3593#ifndef INCOMPLETE_TAINTS
3594 TAINT;
3595#endif
10516c54 3596 tmps = POPpconstx;
97dcea33 3597 len = readlink(tmps, buf, sizeof(buf) - 1);
a0d0e21e
LW		 3598 EXTEND(SP, 1);
3599 if (len < 0)
3600 RETPUSHUNDEF;
3601 PUSHp(buf, len);
3602 RETURN;
3603#else
3604 EXTEND(SP, 1);
3605 RETSETUNDEF; /* just pretend it's a normal file */
3606#endif
3607}
3608
3609#if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
ba106d47 3610STATIC int
b464bac0 3611S_dooneliner(pTHX_ const char *cmd, const char *filename)
a0d0e21e 3612{
b464bac0 3613 char * const save_filename = filename;
1e422769 3614 char *cmdline;
3615 char *s;
760ac839 3616 PerlIO *myfp;
1e422769 3617 int anum = 1;
6fca0082 3618 Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
a0d0e21e 3619
6fca0082
SP		 3620 Newx(cmdline, size, char);
3621 my_strlcpy(cmdline, cmd, size);
3622 my_strlcat(cmdline, " ", size);
1e422769 3623 for (s = cmdline + strlen(cmdline); *filename; ) {
a0d0e21e
LW		 3624 *s++ = '\\';
3625 *s++ = *filename++;
3626 }
d1307786
JH		 3627 if (s - cmdline < size)
3628 my_strlcpy(s, " 2>&1", size - (s - cmdline));
6ad3d225 3629 myfp = PerlProc_popen(cmdline, "r");
1e422769 3630 Safefree(cmdline);
3631
a0d0e21e 3632 if (myfp) {
0bcc34c2 3633 SV * const tmpsv = sv_newmortal();
6b88bc9c 3634 /* Need to save/restore 'PL_rs' ?? */
760ac839 3635 s = sv_gets(tmpsv, myfp, 0);
6ad3d225 3636 (void)PerlProc_pclose(myfp);
bd61b366 3637 if (s != NULL) {
1e422769 3638 int e;
3639 for (e = 1;
a0d0e21e 3640#ifdef HAS_SYS_ERRLIST
1e422769 3641 e <= sys_nerr
3642#endif
3643 ; e++)
3644 {
3645 /* you don't see this */
6136c704 3646 const char * const errmsg =
1e422769 3647#ifdef HAS_SYS_ERRLIST
3648 sys_errlist[e]
a0d0e21e 3649#else
1e422769 3650 strerror(e)
a0d0e21e 3651#endif
1e422769 3652 ;
3653 if (!errmsg)
3654 break;
3655 if (instr(s, errmsg)) {
3656 SETERRNO(e,0);
3657 return 0;
3658 }
a0d0e21e 3659 }
748a9306 3660 SETERRNO(0,0);
a0d0e21e
LW		 3661#ifndef EACCES
3662#define EACCES EPERM
3663#endif
1e422769 3664 if (instr(s, "cannot make"))
93189314 3665 SETERRNO(EEXIST,RMS_FEX);
1e422769 3666 else if (instr(s, "existing file"))
93189314 3667 SETERRNO(EEXIST,RMS_FEX);
1e422769 3668 else if (instr(s, "ile exists"))
93189314 3669 SETERRNO(EEXIST,RMS_FEX);
1e422769 3670 else if (instr(s, "non-exist"))
93189314 3671 SETERRNO(ENOENT,RMS_FNF);
1e422769 3672 else if (instr(s, "does not exist"))
93189314 3673 SETERRNO(ENOENT,RMS_FNF);
1e422769 3674 else if (instr(s, "not empty"))
93189314 3675 SETERRNO(EBUSY,SS_DEVOFFLINE);
1e422769 3676 else if (instr(s, "cannot access"))
93189314 3677 SETERRNO(EACCES,RMS_PRV);
a0d0e21e 3678 else
93189314 3679 SETERRNO(EPERM,RMS_PRV);
a0d0e21e
LW		 3680 return 0;
3681 }
3682 else { /* some mkdirs return no failure indication */
6b88bc9c 3683 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
911d147d 3684 if (PL_op->op_type == OP_RMDIR)
a0d0e21e
LW		 3685 anum = !anum;
3686 if (anum)
748a9306 3687 SETERRNO(0,0);
a0d0e21e 3688 else
93189314 3689 SETERRNO(EACCES,RMS_PRV); /* a guess */
a0d0e21e
LW		 3690 }
3691 return anum;
3692 }
3693 else
3694 return 0;
3695}
3696#endif
3697
0c54f65b
RGS		 3698/* This macro removes trailing slashes from a directory name.
3699 * Different operating and file systems take differently to
3700 * trailing slashes. According to POSIX 1003.1 1996 Edition
3701 * any number of trailing slashes should be allowed.
3702 * Thusly we snip them away so that even non-conforming
3703 * systems are happy.
3704 * We should probably do this "filtering" for all
3705 * the functions that expect (potentially) directory names:
3706 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3707 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3708
5c144d81 3709#define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
0c54f65b
RGS		 3710 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3711 do { \
3712 (len)--; \
3713 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3714 (tmps) = savepvn((tmps), (len)); \
3715 (copy) = TRUE; \
3716 }
3717
a0d0e21e
LW		 3718PP(pp_mkdir)
3719{
97aff369 3720 dVAR; dSP; dTARGET;
df25ddba 3721 STRLEN len;
5c144d81 3722 const char *tmps;
df25ddba 3723 bool copy = FALSE;
7452cf6a 3724 const int mode = (MAXARG > 1) ? POPi : 0777;
5a211162 3725
0c54f65b 3726 TRIMSLASHES(tmps,len,copy);
a0d0e21e
LW		 3727
3728 TAINT_PROPER("mkdir");
3729#ifdef HAS_MKDIR
b8ffc8df 3730 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
a0d0e21e 3731#else
0bcc34c2
AL		 3732 {
3733 int oldumask;
a0d0e21e 3734 SETi( dooneliner("mkdir", tmps) );
6ad3d225
GS		 3735 oldumask = PerlLIO_umask(0);
3736 PerlLIO_umask(oldumask);
3737 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
0bcc34c2 3738 }
a0d0e21e 3739#endif
df25ddba
JH		 3740 if (copy)
3741 Safefree(tmps);
a0d0e21e
LW		 3742 RETURN;
3743}
3744
3745PP(pp_rmdir)
3746{
97aff369 3747 dVAR; dSP; dTARGET;
0c54f65b 3748 STRLEN len;
5c144d81 3749 const char *tmps;
0c54f65b 3750 bool copy = FALSE;
a0d0e21e 3751
0c54f65b 3752 TRIMSLASHES(tmps,len,copy);
a0d0e21e
LW		 3753 TAINT_PROPER("rmdir");
3754#ifdef HAS_RMDIR
b8ffc8df 3755 SETi( PerlDir_rmdir(tmps) >= 0 );
a0d0e21e 3756#else
0c54f65b 3757 SETi( dooneliner("rmdir", tmps) );
a0d0e21e 3758#endif
0c54f65b
RGS		 3759 if (copy)
3760 Safefree(tmps);
a0d0e21e
LW		 3761 RETURN;
3762}
3763
3764/* Directory calls. */
3765
3766PP(pp_open_dir)
3767{
a0d0e21e 3768#if defined(Direntry_t) && defined(HAS_READDIR)
97aff369 3769 dVAR; dSP;
7452cf6a
AL		 3770 const char * const dirname = POPpconstx;
3771 GV * const gv = (GV*)POPs;
3772 register IO * const io = GvIOn(gv);
a0d0e21e
LW		 3773
3774 if (!io)
3775 goto nope;
3776
abc718f2
RGS		 3777 if ((IoIFP(io) || IoOFP(io)) && ckWARN2(WARN_IO, WARN_DEPRECATED))
3778 Perl_warner(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
3779 "Opening filehandle %s also as a directory", GvENAME(gv));
a0d0e21e 3780 if (IoDIRP(io))
6ad3d225 3781 PerlDir_close(IoDIRP(io));
b8ffc8df 3782 if (!(IoDIRP(io) = PerlDir_open(dirname)))
a0d0e21e
LW		 3783 goto nope;
3784
3785 RETPUSHYES;
3786nope:
3787 if (!errno)
93189314 3788 SETERRNO(EBADF,RMS_DIR);
a0d0e21e
LW		 3789 RETPUSHUNDEF;
3790#else
cea2e8a9 3791 DIE(aTHX_ PL_no_dir_func, "opendir");
a0d0e21e
LW		 3792#endif
3793}
3794
3795PP(pp_readdir)
3796{
34b7f128
AMS		 3797#if !defined(Direntry_t) || !defined(HAS_READDIR)
3798 DIE(aTHX_ PL_no_dir_func, "readdir");
3799#else
fd8cd3a3 3800#if !defined(I_DIRENT) && !defined(VMS)
20ce7b12 3801 Direntry_t *readdir (DIR *);
a0d0e21e 3802#endif
97aff369 3803 dVAR;
34b7f128
AMS		 3804 dSP;
3805
3806 SV *sv;
f54cb97a 3807 const I32 gimme = GIMME;
7452cf6a
AL		 3808 GV * const gv = (GV *)POPs;
3809 register const Direntry_t *dp;
3810 register IO * const io = GvIOn(gv);
a0d0e21e 3811
3b7fbd4a
SP		 3812 if (!io || !IoDIRP(io)) {
3813 if(ckWARN(WARN_IO)) {
3814 Perl_warner(aTHX_ packWARN(WARN_IO),
3815 "readdir() attempted on invalid dirhandle %s", GvENAME(gv));
3816 }
3817 goto nope;
3818 }
a0d0e21e 3819
34b7f128
AMS		 3820 do {
3821 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
3822 if (!dp)
3823 break;
a0d0e21e 3824#ifdef DIRNAMLEN
34b7f128 3825 sv = newSVpvn(dp->d_name, dp->d_namlen);
a0d0e21e 3826#else
34b7f128 3827 sv = newSVpv(dp->d_name, 0);
fb73857a 3828#endif
3829#ifndef INCOMPLETE_TAINTS
34b7f128
AMS		 3830 if (!(IoFLAGS(io) & IOf_UNTAINT))
3831 SvTAINTED_on(sv);
a0d0e21e 3832#endif
34b7f128 3833 XPUSHs(sv_2mortal(sv));
a79db61d 3834 } while (gimme == G_ARRAY);
34b7f128
AMS		 3835
3836 if (!dp && gimme != G_ARRAY)
3837 goto nope;
3838
a0d0e21e
LW		 3839 RETURN;
3840
3841nope:
3842 if (!errno)
93189314 3843 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 3844 if (GIMME == G_ARRAY)
3845 RETURN;
3846 else
3847 RETPUSHUNDEF;
a0d0e21e
LW		 3848#endif
3849}
3850
3851PP(pp_telldir)
3852{
a0d0e21e 3853#if defined(HAS_TELLDIR) || defined(telldir)
27da23d5 3854 dVAR; dSP; dTARGET;
968dcd91
JH		 3855 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3856 /* XXX netbsd still seemed to.
3857 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3858 --JHI 1999-Feb-02 */
3859# if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
20ce7b12 3860 long telldir (DIR *);
dfe9444c 3861# endif
7452cf6a
AL		 3862 GV * const gv = (GV*)POPs;
3863 register IO * const io = GvIOn(gv);
a0d0e21e 3864
abc7ecad
SP		 3865 if (!io || !IoDIRP(io)) {
3866 if(ckWARN(WARN_IO)) {
3867 Perl_warner(aTHX_ packWARN(WARN_IO),
3868 "telldir() attempted on invalid dirhandle %s", GvENAME(gv));
3869 }
3870 goto nope;
3871 }
a0d0e21e 3872
6ad3d225 3873 PUSHi( PerlDir_tell(IoDIRP(io)) );
a0d0e21e
LW		 3874 RETURN;
3875nope:
3876 if (!errno)
93189314 3877 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 3878 RETPUSHUNDEF;
3879#else
cea2e8a9 3880 DIE(aTHX_ PL_no_dir_func, "telldir");
a0d0e21e
LW		 3881#endif
3882}
3883
3884PP(pp_seekdir)
3885{
a0d0e21e 3886#if defined(HAS_SEEKDIR) || defined(seekdir)
97aff369 3887 dVAR; dSP;
7452cf6a
AL		 3888 const long along = POPl;
3889 GV * const gv = (GV*)POPs;
3890 register IO * const io = GvIOn(gv);
a0d0e21e 3891
abc7ecad
SP		 3892 if (!io || !IoDIRP(io)) {
3893 if(ckWARN(WARN_IO)) {
3894 Perl_warner(aTHX_ packWARN(WARN_IO),
3895 "seekdir() attempted on invalid dirhandle %s", GvENAME(gv));
3896 }
3897 goto nope;
3898 }
6ad3d225 3899 (void)PerlDir_seek(IoDIRP(io), along);
a0d0e21e
LW		 3900
3901 RETPUSHYES;
3902nope:
3903 if (!errno)
93189314 3904 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 3905 RETPUSHUNDEF;
3906#else
cea2e8a9 3907 DIE(aTHX_ PL_no_dir_func, "seekdir");
a0d0e21e
LW		 3908#endif
3909}
3910
3911PP(pp_rewinddir)
3912{
a0d0e21e 3913#if defined(HAS_REWINDDIR) || defined(rewinddir)
97aff369 3914 dVAR; dSP;
7452cf6a
AL		 3915 GV * const gv = (GV*)POPs;
3916 register IO * const io = GvIOn(gv);
a0d0e21e 3917
abc7ecad
SP		 3918 if (!io || !IoDIRP(io)) {
3919 if(ckWARN(WARN_IO)) {
3920 Perl_warner(aTHX_ packWARN(WARN_IO),
3921 "rewinddir() attempted on invalid dirhandle %s", GvENAME(gv));
3922 }
a0d0e21e 3923 goto nope;
abc7ecad 3924 }
6ad3d225 3925 (void)PerlDir_rewind(IoDIRP(io));
a0d0e21e
LW		 3926 RETPUSHYES;
3927nope:
3928 if (!errno)
93189314 3929 SETERRNO(EBADF,RMS_ISI);
a0d0e21e
LW		 3930 RETPUSHUNDEF;
3931#else
cea2e8a9 3932 DIE(aTHX_ PL_no_dir_func, "rewinddir");
a0d0e21e
LW		 3933#endif
3934}
3935
3936PP(pp_closedir)
3937{
a0d0e21e 3938#if defined(Direntry_t) && defined(HAS_READDIR)
97aff369 3939 dVAR; dSP;
7452cf6a
AL		 3940 GV * const gv = (GV*)POPs;
3941 register IO * const io = GvIOn(gv);
a0d0e21e 3942
abc7ecad
SP		 3943 if (!io || !IoDIRP(io)) {
3944 if(ckWARN(WARN_IO)) {
3945 Perl_warner(aTHX_ packWARN(WARN_IO),
3946 "closedir() attempted on invalid dirhandle %s", GvENAME(gv));
3947 }
3948 goto nope;
3949 }
a0d0e21e 3950#ifdef VOID_CLOSEDIR
6ad3d225 3951 PerlDir_close(IoDIRP(io));
a0d0e21e 3952#else
6ad3d225 3953 if (PerlDir_close(IoDIRP(io)) < 0) {
748a9306 3954 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
a0d0e21e 3955 goto nope;
748a9306 3956 }
a0d0e21e
LW		 3957#endif
3958 IoDIRP(io) = 0;
3959
3960 RETPUSHYES;
3961nope:
3962 if (!errno)
93189314 3963 SETERRNO(EBADF,RMS_IFI);
a0d0e21e
LW		 3964 RETPUSHUNDEF;
3965#else
cea2e8a9 3966 DIE(aTHX_ PL_no_dir_func, "closedir");
a0d0e21e
LW		 3967#endif
3968}
3969
3970/* Process control. */
3971
3972PP(pp_fork)
3973{
44a8e56a 3974#ifdef HAS_FORK
97aff369 3975 dVAR; dSP; dTARGET;
761237fe 3976 Pid_t childpid;
a0d0e21e
LW		 3977
3978 EXTEND(SP, 1);
45bc9206 3979 PERL_FLUSHALL_FOR_CHILD;
52e18b1f 3980 childpid = PerlProc_fork();
a0d0e21e
LW		 3981 if (childpid < 0)
3982 RETSETUNDEF;
3983 if (!childpid) {
fafc274c 3984 GV * const tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV);
7452cf6a 3985 if (tmpgv) {
306196c3 3986 SvREADONLY_off(GvSV(tmpgv));
146174a9 3987 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
306196c3
MS		 3988 SvREADONLY_on(GvSV(tmpgv));
3989 }
4d76a344
RGS		 3990#ifdef THREADS_HAVE_PIDS
3991 PL_ppid = (IV)getppid();
3992#endif
ca0c25f6 3993#ifdef PERL_USES_PL_PIDSTATUS
3280af22 3994 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
ca0c25f6 3995#endif
a0d0e21e
LW		 3996 }
3997 PUSHi(childpid);
3998 RETURN;
3999#else
146174a9 4000# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
39644a26 4001 dSP; dTARGET;
146174a9
CB		 4002 Pid_t childpid;
4003
4004 EXTEND(SP, 1);
4005 PERL_FLUSHALL_FOR_CHILD;
4006 childpid = PerlProc_fork();
60fa28ff
GS		 4007 if (childpid == -1)
4008 RETSETUNDEF;
146174a9
CB		 4009 PUSHi(childpid);
4010 RETURN;
4011# else
0322a713 4012 DIE(aTHX_ PL_no_func, "fork");
146174a9 4013# endif
a0d0e21e
LW		 4014#endif
4015}
4016
4017PP(pp_wait)
4018{
301e8125 4019#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
97aff369 4020 dVAR; dSP; dTARGET;
761237fe 4021 Pid_t childpid;
a0d0e21e 4022 int argflags;
a0d0e21e 4023
4ffa73a3
JH		 4024 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4025 childpid = wait4pid(-1, &argflags, 0);
4026 else {
4027 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4028 errno == EINTR) {
4029 PERL_ASYNC_CHECK();
4030 }
0a0ada86 4031 }
68a29c53
GS		 4032# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4033 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
2fbb330f 4034 STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
68a29c53 4035# else
2fbb330f 4036 STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
68a29c53 4037# endif
44a8e56a 4038 XPUSHi(childpid);
a0d0e21e
LW		 4039 RETURN;
4040#else
0322a713 4041 DIE(aTHX_ PL_no_func, "wait");
a0d0e21e
LW		 4042#endif
4043}
4044
4045PP(pp_waitpid)
4046{
301e8125 4047#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
97aff369 4048 dVAR; dSP; dTARGET;
0bcc34c2
AL		 4049 const int optype = POPi;
4050 const Pid_t pid = TOPi;
2ec0bfb3 4051 Pid_t result;
a0d0e21e 4052 int argflags;
a0d0e21e 4053
4ffa73a3 4054 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
2ec0bfb3 4055 result = wait4pid(pid, &argflags, optype);
4ffa73a3 4056 else {
2ec0bfb3 4057 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4ffa73a3
JH		 4058 errno == EINTR) {
4059 PERL_ASYNC_CHECK();
4060 }
0a0ada86 4061 }
68a29c53
GS		 4062# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4063 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
2fbb330f 4064 STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
68a29c53 4065# else
2fbb330f 4066 STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
68a29c53 4067# endif
2ec0bfb3 4068 SETi(result);
a0d0e21e
LW		 4069 RETURN;
4070#else
0322a713 4071 DIE(aTHX_ PL_no_func, "waitpid");
a0d0e21e
LW		 4072#endif
4073}
4074
4075PP(pp_system)
4076{
97aff369 4077 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e 4078 I32 value;
76ffd3b9 4079 int result;
a0d0e21e 4080
bbd7eb8a
RD		 4081 if (PL_tainting) {
4082 TAINT_ENV();
4083 while (++MARK <= SP) {
10516c54 4084 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
5a445156 4085 if (PL_tainted)
bbd7eb8a
RD		 4086 break;
4087 }
4088 MARK = ORIGMARK;
5a445156 4089 TAINT_PROPER("system");
a0d0e21e 4090 }
45bc9206 4091 PERL_FLUSHALL_FOR_CHILD;
273b0206 4092#if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
d7e492a4 4093 {
eb160463
GS		 4094 Pid_t childpid;
4095 int pp[2];
27da23d5 4096 I32 did_pipes = 0;
eb160463
GS		 4097
4098 if (PerlProc_pipe(pp) >= 0)
4099 did_pipes = 1;
4100 while ((childpid = PerlProc_fork()) == -1) {
4101 if (errno != EAGAIN) {
4102 value = -1;
4103 SP = ORIGMARK;
b59aed67 4104 XPUSHi(value);
eb160463
GS		 4105 if (did_pipes) {
4106 PerlLIO_close(pp[0]);
4107 PerlLIO_close(pp[1]);
4108 }
4109 RETURN;
4110 }
4111 sleep(5);
4112 }
4113 if (childpid > 0) {
4114 Sigsave_t ihand,qhand; /* place to save signals during system() */
4115 int status;
4116
4117 if (did_pipes)
4118 PerlLIO_close(pp[1]);
64ca3a65 4119#ifndef PERL_MICRO
8aad04aa
JH		 4120 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
4121 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
64ca3a65 4122#endif
eb160463
GS		 4123 do {
4124 result = wait4pid(childpid, &status, 0);
4125 } while (result == -1 && errno == EINTR);
64ca3a65 4126#ifndef PERL_MICRO
eb160463
GS		 4127 (void)rsignal_restore(SIGINT, &ihand);
4128 (void)rsignal_restore(SIGQUIT, &qhand);
4129#endif
37038d91 4130 STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
eb160463
GS		 4131 do_execfree(); /* free any memory child malloced on fork */
4132 SP = ORIGMARK;
4133 if (did_pipes) {
4134 int errkid;
bb7a0f54
MHM		 4135 unsigned n = 0;
4136 SSize_t n1;
eb160463
GS		 4137
4138 while (n < sizeof(int)) {
4139 n1 = PerlLIO_read(pp[0],
4140 (void*)(((char*)&errkid)+n),
4141 (sizeof(int)) - n);
4142 if (n1 <= 0)
4143 break;
4144 n += n1;
4145 }
4146 PerlLIO_close(pp[0]);
4147 if (n) { /* Error */
4148 if (n != sizeof(int))
4149 DIE(aTHX_ "panic: kid popen errno read");
4150 errno = errkid; /* Propagate errno from kid */
37038d91 4151 STATUS_NATIVE_CHILD_SET(-1);
eb160463
GS		 4152 }
4153 }
b59aed67 4154 XPUSHi(STATUS_CURRENT);
eb160463
GS		 4155 RETURN;
4156 }
4157 if (did_pipes) {
4158 PerlLIO_close(pp[0]);
d5a9bfb0 4159#if defined(HAS_FCNTL) && defined(F_SETFD)
eb160463 4160 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
d5a9bfb0 4161#endif
eb160463 4162 }
e0a1f643 4163 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4164 SV * const really = *++MARK;
e0a1f643
JH		 4165 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4166 }
4167 else if (SP - MARK != 1)
a0714e2c 4168 value = (I32)do_aexec5(NULL, MARK, SP, pp[1], did_pipes);
e0a1f643 4169 else {
8c074e2a 4170 value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
e0a1f643
JH		 4171 }
4172 PerlProc__exit(-1);
d5a9bfb0 4173 }
c3293030 4174#else /* ! FORK or VMS or OS/2 */
922b1888
GS		 4175 PL_statusvalue = 0;
4176 result = 0;
911d147d 4177 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4178 SV * const really = *++MARK;
a0fd4948 4179# if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
54725af6
GS		 4180 value = (I32)do_aspawn(really, MARK, SP);
4181# else
c5be433b 4182 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
54725af6 4183# endif
a0d0e21e 4184 }
54725af6 4185 else if (SP - MARK != 1) {
a0fd4948 4186# if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
a0714e2c 4187 value = (I32)do_aspawn(NULL, MARK, SP);
54725af6 4188# else
a0714e2c 4189 value = (I32)do_aspawn(NULL, (void **)MARK, (void **)SP);
54725af6
GS		 4190# endif
4191 }
a0d0e21e 4192 else {
8c074e2a 4193 value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e 4194 }
922b1888
GS		 4195 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4196 result = 1;
2fbb330f 4197 STATUS_NATIVE_CHILD_SET(value);
a0d0e21e
LW		 4198 do_execfree();
4199 SP = ORIGMARK;
b59aed67 4200 XPUSHi(result ? value : STATUS_CURRENT);
a0d0e21e
LW		 4201#endif /* !FORK or VMS */
4202 RETURN;
4203}
4204
4205PP(pp_exec)
4206{
97aff369 4207 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 4208 I32 value;
4209
bbd7eb8a
RD		 4210 if (PL_tainting) {
4211 TAINT_ENV();
4212 while (++MARK <= SP) {
10516c54 4213 (void)SvPV_nolen_const(*MARK); /* stringify for taint check */
5a445156 4214 if (PL_tainted)
bbd7eb8a
RD		 4215 break;
4216 }
4217 MARK = ORIGMARK;
5a445156 4218 TAINT_PROPER("exec");
bbd7eb8a 4219 }
45bc9206 4220 PERL_FLUSHALL_FOR_CHILD;
533c011a 4221 if (PL_op->op_flags & OPf_STACKED) {
0bcc34c2 4222 SV * const really = *++MARK;
a0d0e21e
LW		 4223 value = (I32)do_aexec(really, MARK, SP);
4224 }
4225 else if (SP - MARK != 1)
4226#ifdef VMS
a0714e2c 4227 value = (I32)vms_do_aexec(NULL, MARK, SP);
a0d0e21e 4228#else
092bebab
JH		 4229# ifdef __OPEN_VM
4230 {
a0714e2c 4231 (void ) do_aspawn(NULL, MARK, SP);
092bebab
JH		 4232 value = 0;
4233 }
4234# else
a0714e2c 4235 value = (I32)do_aexec(NULL, MARK, SP);
092bebab 4236# endif
a0d0e21e
LW		 4237#endif
4238 else {
a0d0e21e 4239#ifdef VMS
8c074e2a 4240 value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
a0d0e21e 4241#else
092bebab 4242# ifdef __OPEN_VM
8c074e2a 4243 (void) do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
092bebab
JH		 4244 value = 0;
4245# else
8c074e2a 4246 value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
092bebab 4247# endif
a0d0e21e
LW		 4248#endif
4249 }
146174a9 4250
a0d0e21e 4251 SP = ORIGMARK;
b59aed67 4252 XPUSHi(value);
a0d0e21e
LW		 4253 RETURN;
4254}
4255
a0d0e21e
LW		 4256PP(pp_getppid)
4257{
4258#ifdef HAS_GETPPID
97aff369 4259 dVAR; dSP; dTARGET;
4d76a344 4260# ifdef THREADS_HAVE_PIDS
e39f92a7
RGS		 4261 if (PL_ppid != 1 && getppid() == 1)
4262 /* maybe the parent process has died. Refresh ppid cache */
4263 PL_ppid = 1;
4d76a344
RGS		 4264 XPUSHi( PL_ppid );
4265# else
a0d0e21e 4266 XPUSHi( getppid() );
4d76a344 4267# endif
a0d0e21e
LW		 4268 RETURN;
4269#else
cea2e8a9 4270 DIE(aTHX_ PL_no_func, "getppid");
a0d0e21e
LW		 4271#endif
4272}
4273
4274PP(pp_getpgrp)
4275{
4276#ifdef HAS_GETPGRP
97aff369 4277 dVAR; dSP; dTARGET;
9853a804 4278 Pid_t pgrp;
0bcc34c2 4279 const Pid_t pid = (MAXARG < 1) ? 0 : SvIVx(POPs);
a0d0e21e 4280
c3293030 4281#ifdef BSD_GETPGRP
9853a804 4282 pgrp = (I32)BSD_GETPGRP(pid);
a0d0e21e 4283#else
146174a9 4284 if (pid != 0 && pid != PerlProc_getpid())
cea2e8a9 4285 DIE(aTHX_ "POSIX getpgrp can't take an argument");
9853a804 4286 pgrp = getpgrp();
a0d0e21e 4287#endif
9853a804 4288 XPUSHi(pgrp);
a0d0e21e
LW		 4289 RETURN;
4290#else
cea2e8a9 4291 DIE(aTHX_ PL_no_func, "getpgrp()");
a0d0e21e
LW		 4292#endif
4293}
4294
4295PP(pp_setpgrp)
4296{
4297#ifdef HAS_SETPGRP
97aff369 4298 dVAR; dSP; dTARGET;
d8a83dd3
JH		 4299 Pid_t pgrp;
4300 Pid_t pid;
a0d0e21e
LW		 4301 if (MAXARG < 2) {
4302 pgrp = 0;
4303 pid = 0;
4304 }
4305 else {
4306 pgrp = POPi;
4307 pid = TOPi;
4308 }
4309
4310 TAINT_PROPER("setpgrp");
c3293030
IZ		 4311#ifdef BSD_SETPGRP
4312 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
a0d0e21e 4313#else
146174a9
CB		 4314 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4315 || (pid != 0 && pid != PerlProc_getpid()))
4316 {
4317 DIE(aTHX_ "setpgrp can't take arguments");
4318 }
a0d0e21e
LW		 4319 SETi( setpgrp() >= 0 );
4320#endif /* USE_BSDPGRP */
4321 RETURN;
4322#else
cea2e8a9 4323 DIE(aTHX_ PL_no_func, "setpgrp()");
a0d0e21e
LW		 4324#endif
4325}
4326
4327PP(pp_getpriority)
4328{
a0d0e21e 4329#ifdef HAS_GETPRIORITY
97aff369 4330 dVAR; dSP; dTARGET;
0bcc34c2
AL		 4331 const int who = POPi;
4332 const int which = TOPi;
a0d0e21e
LW		 4333 SETi( getpriority(which, who) );
4334 RETURN;
4335#else
cea2e8a9 4336 DIE(aTHX_ PL_no_func, "getpriority()");
a0d0e21e
LW		 4337#endif
4338}
4339
4340PP(pp_setpriority)
4341{
a0d0e21e 4342#ifdef HAS_SETPRIORITY
97aff369 4343 dVAR; dSP; dTARGET;
0bcc34c2
AL		 4344 const int niceval = POPi;
4345 const int who = POPi;
4346 const int which = TOPi;
a0d0e21e
LW		 4347 TAINT_PROPER("setpriority");
4348 SETi( setpriority(which, who, niceval) >= 0 );
4349 RETURN;
4350#else
cea2e8a9 4351 DIE(aTHX_ PL_no_func, "setpriority()");
a0d0e21e
LW		 4352#endif
4353}
4354
4355/* Time calls. */
4356
4357PP(pp_time)
4358{
97aff369 4359 dVAR; dSP; dTARGET;
cbdc8872 4360#ifdef BIG_TIME
4608196e 4361 XPUSHn( time(NULL) );
cbdc8872 4362#else
4608196e 4363 XPUSHi( time(NULL) );
cbdc8872 4364#endif
a0d0e21e
LW		 4365 RETURN;
4366}
4367
a0d0e21e
LW		 4368PP(pp_tms)
4369{
9cad6237 4370#ifdef HAS_TIMES
97aff369 4371 dVAR;
39644a26 4372 dSP;
a0d0e21e 4373 EXTEND(SP, 4);
a0d0e21e 4374#ifndef VMS
3280af22 4375 (void)PerlProc_times(&PL_timesbuf);
a0d0e21e 4376#else
6b88bc9c 4377 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
76e3520e
GS		 4378 /* struct tms, though same data */
4379 /* is returned. */
a0d0e21e
LW		 4380#endif
4381
5311654c 4382 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick)));
a0d0e21e 4383 if (GIMME == G_ARRAY) {
5311654c
JH		 4384 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick)));
4385 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick)));
4386 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick)));
a0d0e21e
LW		 4387 }
4388 RETURN;
9cad6237 4389#else
2f42fcb0
JH		 4390# ifdef PERL_MICRO
4391 dSP;
4392 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4393 EXTEND(SP, 4);
4394 if (GIMME == G_ARRAY) {
4395 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4396 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4397 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4398 }
4399 RETURN;
4400# else
9cad6237 4401 DIE(aTHX_ "times not implemented");
2f42fcb0 4402# endif
55497cff 4403#endif /* HAS_TIMES */
a0d0e21e
LW		 4404}
4405
a4323dee 4406#ifdef LOCALTIME_EDGECASE_BROKEN
89261a6c 4407static struct tm *S_my_localtime (pTHX_ Time_t *tp)
a4323dee
MB		 4408{
4409 auto time_t T;
4410 auto struct tm *P;
4411
4412 /* No workarounds in the valid range */
4413 if (!tp || *tp < 0x7fff573f || *tp >= 0x80000000)
4414 return (localtime (tp));
4415
4416 /* This edge case is to workaround the undefined behaviour, where the
4417 * TIMEZONE makes the time go beyond the defined range.
4418 * gmtime (0x7fffffff) => 2038-01-19 03:14:07
4419 * If there is a negative offset in TZ, like MET-1METDST, some broken
4420 * implementations of localtime () (like AIX 5.2) barf with bogus
4421 * return values:
4422 * 0x7fffffff gmtime 2038-01-19 03:14:07
4423 * 0x7fffffff localtime 1901-12-13 21:45:51
4424 * 0x7fffffff mylocaltime 2038-01-19 04:14:07
4425 * 0x3c19137f gmtime 2001-12-13 20:45:51
4426 * 0x3c19137f localtime 2001-12-13 21:45:51
4427 * 0x3c19137f mylocaltime 2001-12-13 21:45:51
4428 * Given that legal timezones are typically between GMT-12 and GMT+12
4429 * we turn back the clock 23 hours before calling the localtime
4430 * function, and add those to the return value. This will never cause
3574fba9 4431 * day wrapping problems, since the edge case is Tue Jan *19*
a4323dee
MB		 4432 */
4433 T = *tp - 82800; /* 23 hour. allows up to GMT-23 */
4434 P = localtime (&T);
4435 P->tm_hour += 23;
4436 if (P->tm_hour >= 24) {
4437 P->tm_hour -= 24;
3574fba9
CW		 4438 P->tm_mday++; /* 18 -> 19 */
4439 P->tm_wday++; /* Mon -> Tue */
4440 P->tm_yday++; /* 18 -> 19 */
a4323dee
MB		 4441 }
4442 return (P);
4443} /* S_my_localtime */
4444#endif
4445
a0d0e21e
LW		 4446PP(pp_gmtime)
4447{
97aff369 4448 dVAR;
39644a26 4449 dSP;
a0d0e21e 4450 Time_t when;
bfed75c6 4451 const struct tm *tmbuf;
27da23d5
JH		 4452 static const char * const dayname[] =
4453 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4454 static const char * const monname[] =
4455 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4456 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
a0d0e21e
LW		 4457
4458 if (MAXARG < 1)
4459 (void)time(&when);
4460 else
cbdc8872 4461#ifdef BIG_TIME
4462 when = (Time_t)SvNVx(POPs);
4463#else
a0d0e21e 4464 when = (Time_t)SvIVx(POPs);
cbdc8872 4465#endif
a0d0e21e 4466
533c011a 4467 if (PL_op->op_type == OP_LOCALTIME)
a4323dee 4468#ifdef LOCALTIME_EDGECASE_BROKEN
89261a6c 4469 tmbuf = S_my_localtime(aTHX_ &when);
a4323dee 4470#else
a0d0e21e 4471 tmbuf = localtime(&when);
a4323dee 4472#endif
a0d0e21e
LW		 4473 else
4474 tmbuf = gmtime(&when);
4475
a0d0e21e 4476 if (GIMME != G_ARRAY) {
46fc3d4c 4477 SV *tsv;
9a5ff6d9
AB		 4478 EXTEND(SP, 1);
4479 EXTEND_MORTAL(1);
a0d0e21e
LW		 4480 if (!tmbuf)
4481 RETPUSHUNDEF;
be28567c 4482 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d",
f5a29b03
RB		 4483 dayname[tmbuf->tm_wday],
4484 monname[tmbuf->tm_mon],
be28567c
GS		 4485 tmbuf->tm_mday,
4486 tmbuf->tm_hour,
4487 tmbuf->tm_min,
4488 tmbuf->tm_sec,
4489 tmbuf->tm_year + 1900);
46fc3d4c 4490 PUSHs(sv_2mortal(tsv));
a0d0e21e
LW		 4491 }
4492 else if (tmbuf) {
9a5ff6d9
AB		 4493 EXTEND(SP, 9);
4494 EXTEND_MORTAL(9);
4495 PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec)));
c6419e06
JH		 4496 PUSHs(sv_2mortal(newSViv(tmbuf->tm_min)));
4497 PUSHs(sv_2mortal(newSViv(tmbuf->tm_hour)));
4498 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mday)));
4499 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mon)));
4500 PUSHs(sv_2mortal(newSViv(tmbuf->tm_year)));
4501 PUSHs(sv_2mortal(newSViv(tmbuf->tm_wday)));
4502 PUSHs(sv_2mortal(newSViv(tmbuf->tm_yday)));
4503 PUSHs(sv_2mortal(newSViv(tmbuf->tm_isdst)));
a0d0e21e
LW		 4504 }
4505 RETURN;
4506}
4507
4508PP(pp_alarm)
4509{
9cad6237 4510#ifdef HAS_ALARM
97aff369 4511 dVAR; dSP; dTARGET;
a0d0e21e 4512 int anum;
a0d0e21e
LW		 4513 anum = POPi;
4514 anum = alarm((unsigned int)anum);
4515 EXTEND(SP, 1);
4516 if (anum < 0)
4517 RETPUSHUNDEF;
c6419e06 4518 PUSHi(anum);
a0d0e21e
LW		 4519 RETURN;
4520#else
0322a713 4521 DIE(aTHX_ PL_no_func, "alarm");
a0d0e21e
LW		 4522#endif
4523}
4524
4525PP(pp_sleep)
4526{
97aff369 4527 dVAR; dSP; dTARGET;
a0d0e21e
LW		 4528 I32 duration;
4529 Time_t lasttime;
4530 Time_t when;
4531
4532 (void)time(&lasttime);
4533 if (MAXARG < 1)
76e3520e 4534 PerlProc_pause();
a0d0e21e
LW		 4535 else {
4536 duration = POPi;
76e3520e 4537 PerlProc_sleep((unsigned int)duration);
a0d0e21e
LW		 4538 }
4539 (void)time(&when);
4540 XPUSHi(when - lasttime);
4541 RETURN;
4542}
4543
4544/* Shared memory. */
c9f7ac20 4545/* Merged with some message passing. */
a0d0e21e 4546
a0d0e21e
LW		 4547PP(pp_shmwrite)
4548{
4549#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
97aff369 4550 dVAR; dSP; dMARK; dTARGET;
c9f7ac20
NC		 4551 const int op_type = PL_op->op_type;
4552 I32 value;
a0d0e21e 4553
c9f7ac20
NC		 4554 switch (op_type) {
4555 case OP_MSGSND:
4556 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4557 break;
4558 case OP_MSGRCV:
4559 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4560 break;
ca563b4e
NC		 4561 case OP_SEMOP:
4562 value = (I32)(do_semop(MARK, SP) >= 0);
4563 break;
c9f7ac20
NC		 4564 default:
4565 value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
4566 break;
4567 }
a0d0e21e 4568
a0d0e21e
LW		 4569 SP = MARK;
4570 PUSHi(value);
4571 RETURN;
4572#else
cea2e8a9 4573 return pp_semget();
a0d0e21e
LW		 4574#endif
4575}
4576
4577/* Semaphores. */
4578
4579PP(pp_semget)
4580{
4581#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
97aff369 4582 dVAR; dSP; dMARK; dTARGET;
0bcc34c2 4583 const int anum = do_ipcget(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 4584 SP = MARK;
4585 if (anum == -1)
4586 RETPUSHUNDEF;
4587 PUSHi(anum);
4588 RETURN;
4589#else
cea2e8a9 4590 DIE(aTHX_ "System V IPC is not implemented on this machine");
a0d0e21e
LW		 4591#endif
4592}
4593
4594PP(pp_semctl)
4595{
4596#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
97aff369 4597 dVAR; dSP; dMARK; dTARGET;
0bcc34c2 4598 const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
a0d0e21e
LW		 4599 SP = MARK;
4600 if (anum == -1)
4601 RETSETUNDEF;
4602 if (anum != 0) {
4603 PUSHi(anum);
4604 }
4605 else {
8903cb82 4606 PUSHp(zero_but_true, ZBTLEN);
a0d0e21e
LW		 4607 }
4608 RETURN;
4609#else
cea2e8a9 4610 return pp_semget();
a0d0e21e
LW		 4611#endif
4612}
4613
5cdc4e88
NC		 4614/* I can't const this further without getting warnings about the types of
4615 various arrays passed in from structures. */
4616static SV *
4617S_space_join_names_mortal(pTHX_ char *const *array)
4618{
7c58897d 4619 SV *target;
5cdc4e88
NC		 4620
4621 if (array && *array) {
7c58897d 4622 target = sv_2mortal(newSVpvs(""));
5cdc4e88
NC		 4623 while (1) {
4624 sv_catpv(target, *array);
4625 if (!*++array)
4626 break;
4627 sv_catpvs(target, " ");
4628 }
7c58897d
NC		 4629 } else {
4630 target = sv_mortalcopy(&PL_sv_no);
5cdc4e88
NC		 4631 }
4632 return target;
4633}
4634
a0d0e21e
LW		 4635/* Get system info. */
4636
a0d0e21e
LW		 4637PP(pp_ghostent)
4638{
693762b4 4639#if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
97aff369 4640 dVAR; dSP;
533c011a 4641 I32 which = PL_op->op_type;
a0d0e21e
LW		 4642 register char **elem;
4643 register SV *sv;
dc45a647 4644#ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4645 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4646 struct hostent *gethostbyname(Netdb_name_t);
4647 struct hostent *gethostent(void);
a0d0e21e
LW		 4648#endif
4649 struct hostent *hent;
4650 unsigned long len;
4651
4652 EXTEND(SP, 10);
edd309b7 4653 if (which == OP_GHBYNAME) {
dc45a647 4654#ifdef HAS_GETHOSTBYNAME
0bcc34c2 4655 const char* const name = POPpbytex;
edd309b7 4656 hent = PerlSock_gethostbyname(name);
dc45a647 4657#else
cea2e8a9 4658 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
dc45a647 4659#endif
edd309b7 4660 }
a0d0e21e 4661 else if (which == OP_GHBYADDR) {
dc45a647 4662#ifdef HAS_GETHOSTBYADDR
0bcc34c2
AL		 4663 const int addrtype = POPi;
4664 SV * const addrsv = POPs;
a0d0e21e 4665 STRLEN addrlen;
5bf7026a 4666 Netdb_host_t addr = (Netdb_host_t) SvPVbyte(addrsv, addrlen);
a0d0e21e 4667
1d0eb99a 4668 hent = PerlSock_gethostbyaddr((const char*)addr, (Netdb_hlen_t) addrlen, addrtype);
dc45a647 4669#else
cea2e8a9 4670 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
dc45a647 4671#endif
a0d0e21e
LW		 4672 }
4673 else
4674#ifdef HAS_GETHOSTENT
6ad3d225 4675 hent = PerlSock_gethostent();
a0d0e21e 4676#else
cea2e8a9 4677 DIE(aTHX_ PL_no_sock_func, "gethostent");
a0d0e21e
LW		 4678#endif
4679
4680#ifdef HOST_NOT_FOUND
10bc17b6
JH		 4681 if (!hent) {
4682#ifdef USE_REENTRANT_API
4683# ifdef USE_GETHOSTENT_ERRNO
4684 h_errno = PL_reentrant_buffer->_gethostent_errno;
4685# endif
4686#endif
37038d91 4687 STATUS_UNIX_SET(h_errno);
10bc17b6 4688 }
a0d0e21e
LW		 4689#endif
4690
4691 if (GIMME != G_ARRAY) {
4692 PUSHs(sv = sv_newmortal());
4693 if (hent) {
4694 if (which == OP_GHBYNAME) {
fd0af264 4695 if (hent->h_addr)
4696 sv_setpvn(sv, hent->h_addr, hent->h_length);
a0d0e21e
LW		 4697 }
4698 else
4699 sv_setpv(sv, (char*)hent->h_name);
4700 }
4701 RETURN;
4702 }
4703
4704 if (hent) {
7c58897d 4705 PUSHs(sv_2mortal(newSVpv((char*)hent->h_name, 0)));
931e0695 4706 PUSHs(space_join_names_mortal(hent->h_aliases));
7c58897d 4707 PUSHs(sv_2mortal(newSViv((IV)hent->h_addrtype)));
a0d0e21e 4708 len = hent->h_length;
7c58897d 4709 PUSHs(sv_2mortal(newSViv((IV)len)));
a0d0e21e
LW		 4710#ifdef h_addr
4711 for (elem = hent->h_addr_list; elem && *elem; elem++) {
7c58897d 4712 XPUSHs(sv_2mortal(newSVpvn(*elem, len)));
a0d0e21e
LW		 4713 }
4714#else
fd0af264 4715 if (hent->h_addr)
7c58897d
NC		 4716 PUSHs(newSVpvn(hent->h_addr, len));
4717 else
4718 PUSHs(sv_mortalcopy(&PL_sv_no));
a0d0e21e
LW		 4719#endif /* h_addr */
4720 }
4721 RETURN;
4722#else
cea2e8a9 4723 DIE(aTHX_ PL_no_sock_func, "gethostent");
a0d0e21e
LW		 4724#endif
4725}
4726
a0d0e21e
LW		 4727PP(pp_gnetent)
4728{
693762b4 4729#if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
97aff369 4730 dVAR; dSP;
533c011a 4731 I32 which = PL_op->op_type;
a0d0e21e 4732 register SV *sv;
dc45a647 4733#ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4734 struct netent *getnetbyaddr(Netdb_net_t, int);
4735 struct netent *getnetbyname(Netdb_name_t);
4736 struct netent *getnetent(void);
8ac85365 4737#endif
a0d0e21e
LW		 4738 struct netent *nent;
4739
edd309b7 4740 if (which == OP_GNBYNAME){
dc45a647 4741#ifdef HAS_GETNETBYNAME
0bcc34c2 4742 const char * const name = POPpbytex;
edd309b7 4743 nent = PerlSock_getnetbyname(name);
dc45a647 4744#else
cea2e8a9 4745 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
dc45a647 4746#endif
edd309b7 4747 }
a0d0e21e 4748 else if (which == OP_GNBYADDR) {
dc45a647 4749#ifdef HAS_GETNETBYADDR
0bcc34c2
AL		 4750 const int addrtype = POPi;
4751 const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
76e3520e 4752 nent = PerlSock_getnetbyaddr(addr, addrtype);
dc45a647 4753#else
cea2e8a9 4754 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
dc45a647 4755#endif
a0d0e21e
LW		 4756 }
4757 else
dc45a647 4758#ifdef HAS_GETNETENT
76e3520e 4759 nent = PerlSock_getnetent();
dc45a647 4760#else
cea2e8a9 4761 DIE(aTHX_ PL_no_sock_func, "getnetent");
dc45a647 4762#endif
a0d0e21e 4763
10bc17b6
JH		 4764#ifdef HOST_NOT_FOUND
4765 if (!nent) {
4766#ifdef USE_REENTRANT_API
4767# ifdef USE_GETNETENT_ERRNO
4768 h_errno = PL_reentrant_buffer->_getnetent_errno;
4769# endif
4770#endif
37038d91 4771 STATUS_UNIX_SET(h_errno);
10bc17b6
JH		 4772 }
4773#endif
4774
a0d0e21e
LW		 4775 EXTEND(SP, 4);
4776 if (GIMME != G_ARRAY) {
4777 PUSHs(sv = sv_newmortal());
4778 if (nent) {
4779 if (which == OP_GNBYNAME)
1e422769 4780 sv_setiv(sv, (IV)nent->n_net);
a0d0e21e
LW		 4781 else
4782 sv_setpv(sv, nent->n_name);
4783 }
4784 RETURN;
4785 }
4786
4787 if (nent) {
7c58897d 4788 PUSHs(sv_2mortal(newSVpv(nent->n_name, 0)));
931e0695 4789 PUSHs(space_join_names_mortal(nent->n_aliases));
7c58897d
NC		 4790 PUSHs(sv_2mortal(newSViv((IV)nent->n_addrtype)));
4791 PUSHs(sv_2mortal(newSViv((IV)nent->n_net)));
a0d0e21e
LW		 4792 }
4793
4794 RETURN;
4795#else
cea2e8a9 4796 DIE(aTHX_ PL_no_sock_func, "getnetent");
a0d0e21e
LW		 4797#endif
4798}
4799
a0d0e21e
LW		 4800PP(pp_gprotoent)
4801{
693762b4 4802#if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
97aff369 4803 dVAR; dSP;
533c011a 4804 I32 which = PL_op->op_type;
301e8125 4805 register SV *sv;
dc45a647 4806#ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4807 struct protoent *getprotobyname(Netdb_name_t);
4808 struct protoent *getprotobynumber(int);
4809 struct protoent *getprotoent(void);
8ac85365 4810#endif
a0d0e21e
LW		 4811 struct protoent *pent;
4812
edd309b7 4813 if (which == OP_GPBYNAME) {
e5c9fcd0 4814#ifdef HAS_GETPROTOBYNAME
0bcc34c2 4815 const char* const name = POPpbytex;
edd309b7 4816 pent = PerlSock_getprotobyname(name);
e5c9fcd0 4817#else
cea2e8a9 4818 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
e5c9fcd0 4819#endif
edd309b7
JH		 4820 }
4821 else if (which == OP_GPBYNUMBER) {
e5c9fcd0 4822#ifdef HAS_GETPROTOBYNUMBER
0bcc34c2 4823 const int number = POPi;
edd309b7 4824 pent = PerlSock_getprotobynumber(number);
e5c9fcd0 4825#else
edd309b7 4826 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
e5c9fcd0 4827#endif
edd309b7 4828 }
a0d0e21e 4829 else
e5c9fcd0 4830#ifdef HAS_GETPROTOENT
6ad3d225 4831 pent = PerlSock_getprotoent();
e5c9fcd0 4832#else
cea2e8a9 4833 DIE(aTHX_ PL_no_sock_func, "getprotoent");
e5c9fcd0 4834#endif
a0d0e21e
LW		 4835
4836 EXTEND(SP, 3);
4837 if (GIMME != G_ARRAY) {
4838 PUSHs(sv = sv_newmortal());
4839 if (pent) {
4840 if (which == OP_GPBYNAME)
1e422769 4841 sv_setiv(sv, (IV)pent->p_proto);
a0d0e21e
LW		 4842 else
4843 sv_setpv(sv, pent->p_name);
4844 }
4845 RETURN;
4846 }
4847
4848 if (pent) {
7c58897d 4849 PUSHs(sv_2mortal(newSVpv(pent->p_name, 0)));
931e0695 4850 PUSHs(space_join_names_mortal(pent->p_aliases));
7c58897d 4851 PUSHs(sv_2mortal(newSViv((IV)pent->p_proto)));
a0d0e21e
LW		 4852 }
4853
4854 RETURN;
4855#else
cea2e8a9 4856 DIE(aTHX_ PL_no_sock_func, "getprotoent");
a0d0e21e
LW		 4857#endif
4858}
4859
a0d0e21e
LW		 4860PP(pp_gservent)
4861{
693762b4 4862#if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
97aff369 4863 dVAR; dSP;
533c011a 4864 I32 which = PL_op->op_type;
a0d0e21e 4865 register SV *sv;
dc45a647 4866#ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
1d88b533
JH		 4867 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
4868 struct servent *getservbyport(int, Netdb_name_t);
4869 struct servent *getservent(void);
8ac85365 4870#endif
a0d0e21e
LW		 4871 struct servent *sent;
4872
4873 if (which == OP_GSBYNAME) {
dc45a647 4874#ifdef HAS_GETSERVBYNAME
0bcc34c2
AL		 4875 const char * const proto = POPpbytex;
4876 const char * const name = POPpbytex;
bd61b366 4877 sent = PerlSock_getservbyname(name, (proto && !*proto) ? NULL : proto);
dc45a647 4878#else
cea2e8a9 4879 DIE(aTHX_ PL_no_sock_func, "getservbyname");
dc45a647 4880#endif
a0d0e21e
LW		 4881 }
4882 else if (which == OP_GSBYPORT) {
dc45a647 4883#ifdef HAS_GETSERVBYPORT
0bcc34c2 4884 const char * const proto = POPpbytex;
eb160463 4885 unsigned short port = (unsigned short)POPu;
36477c24 4886#ifdef HAS_HTONS
6ad3d225 4887 port = PerlSock_htons(port);
36477c24 4888#endif
bd61b366 4889 sent = PerlSock_getservbyport(port, (proto && !*proto) ? NULL : proto);
dc45a647 4890#else
cea2e8a9 4891 DIE(aTHX_ PL_no_sock_func, "getservbyport");
dc45a647 4892#endif
a0d0e21e
LW		 4893 }
4894 else
e5c9fcd0 4895#ifdef HAS_GETSERVENT
6ad3d225 4896 sent = PerlSock_getservent();
e5c9fcd0 4897#else
cea2e8a9 4898 DIE(aTHX_ PL_no_sock_func, "getservent");
e5c9fcd0 4899#endif
a0d0e21e
LW		 4900
4901 EXTEND(SP, 4);
4902 if (GIMME != G_ARRAY) {
4903 PUSHs(sv = sv_newmortal());
4904 if (sent) {
4905 if (which == OP_GSBYNAME) {
4906#ifdef HAS_NTOHS
6ad3d225 4907 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
a0d0e21e 4908#else
1e422769 4909 sv_setiv(sv, (IV)(sent->s_port));
a0d0e21e
LW		 4910#endif
4911 }
4912 else
4913 sv_setpv(sv, sent->s_name);
4914 }
4915 RETURN;
4916 }
4917
4918 if (sent) {
7c58897d 4919 PUSHs(sv_2mortal(newSVpv(sent->s_name, 0)));
931e0695 4920 PUSHs(space_join_names_mortal(sent->s_aliases));
a0d0e21e 4921#ifdef HAS_NTOHS
7c58897d 4922 PUSHs(sv_2mortal(newSViv((IV)PerlSock_ntohs(sent->s_port))));
a0d0e21e 4923#else
7c58897d 4924 PUSHs(sv_2mortal(newSViv((IV)(sent->s_port))));
a0d0e21e 4925#endif
7c58897d 4926 PUSHs(sv_2mortal(newSVpv(sent->s_proto, 0)));
a0d0e21e
LW		 4927 }
4928
4929 RETURN;
4930#else
cea2e8a9 4931 DIE(aTHX_ PL_no_sock_func, "getservent");
a0d0e21e
LW		 4932#endif
4933}
4934
4935PP(pp_shostent)
4936{
693762b4 4937#ifdef HAS_SETHOSTENT
97aff369 4938 dVAR; dSP;
76e3520e 4939 PerlSock_sethostent(TOPi);
a0d0e21e
LW		 4940 RETSETYES;
4941#else
cea2e8a9 4942 DIE(aTHX_ PL_no_sock_func, "sethostent");
a0d0e21e
LW		 4943#endif
4944}
4945
4946PP(pp_snetent)
4947{
693762b4 4948#ifdef HAS_SETNETENT
97aff369 4949 dVAR; dSP;
76e3520e 4950 PerlSock_setnetent(TOPi);
a0d0e21e
LW		 4951 RETSETYES;
4952#else
cea2e8a9 4953 DIE(aTHX_ PL_no_sock_func, "setnetent");
a0d0e21e
LW		 4954#endif
4955}
4956
4957PP(pp_sprotoent)
4958{
693762b4 4959#ifdef HAS_SETPROTOENT
97aff369 4960 dVAR; dSP;
76e3520e 4961 PerlSock_setprotoent(TOPi);
a0d0e21e
LW		 4962 RETSETYES;
4963#else
cea2e8a9 4964 DIE(aTHX_ PL_no_sock_func, "setprotoent");
a0d0e21e
LW		 4965#endif
4966}
4967
4968PP(pp_sservent)
4969{
693762b4 4970#ifdef HAS_SETSERVENT
97aff369 4971 dVAR; dSP;
76e3520e 4972 PerlSock_setservent(TOPi);
a0d0e21e
LW		 4973 RETSETYES;
4974#else
cea2e8a9 4975 DIE(aTHX_ PL_no_sock_func, "setservent");
a0d0e21e
LW		 4976#endif
4977}
4978
4979PP(pp_ehostent)
4980{
693762b4 4981#ifdef HAS_ENDHOSTENT
97aff369 4982 dVAR; dSP;
76e3520e 4983 PerlSock_endhostent();
924508f0 4984 EXTEND(SP,1);
a0d0e21e
LW		 4985 RETPUSHYES;
4986#else
cea2e8a9 4987 DIE(aTHX_ PL_no_sock_func, "endhostent");
a0d0e21e
LW		 4988#endif
4989}
4990
4991PP(pp_enetent)
4992{
693762b4 4993#ifdef HAS_ENDNETENT
97aff369 4994 dVAR; dSP;
76e3520e 4995 PerlSock_endnetent();
924508f0 4996 EXTEND(SP,1);
a0d0e21e
LW		 4997 RETPUSHYES;
4998#else
cea2e8a9 4999 DIE(aTHX_ PL_no_sock_func, "endnetent");
a0d0e21e
LW		 5000#endif
5001}
5002
5003PP(pp_eprotoent)
5004{
693762b4 5005#ifdef HAS_ENDPROTOENT
97aff369 5006 dVAR; dSP;
76e3520e 5007 PerlSock_endprotoent();
924508f0 5008 EXTEND(SP,1);
a0d0e21e
LW		 5009 RETPUSHYES;
5010#else
cea2e8a9 5011 DIE(aTHX_ PL_no_sock_func, "endprotoent");
a0d0e21e
LW		 5012#endif
5013}
5014
5015PP(pp_eservent)
5016{
693762b4 5017#ifdef HAS_ENDSERVENT
97aff369 5018 dVAR; dSP;
76e3520e 5019 PerlSock_endservent();
924508f0 5020 EXTEND(SP,1);
a0d0e21e
LW		 5021 RETPUSHYES;
5022#else
cea2e8a9 5023 DIE(aTHX_ PL_no_sock_func, "endservent");
a0d0e21e
LW		 5024#endif
5025}
5026
a0d0e21e
LW		 5027PP(pp_gpwent)
5028{
0994c4d0 5029#ifdef HAS_PASSWD
97aff369 5030 dVAR; dSP;
533c011a 5031 I32 which = PL_op->op_type;
a0d0e21e 5032 register SV *sv;
e3aefe8d 5033 struct passwd *pwent = NULL;
301e8125 5034 /*
bcf53261
JH		 5035 * We currently support only the SysV getsp* shadow password interface.
5036 * The interface is declared in <shadow.h> and often one needs to link
5037 * with -lsecurity or some such.
5038 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5039 * (and SCO?)
5040 *
5041 * AIX getpwnam() is clever enough to return the encrypted password
5042 * only if the caller (euid?) is root.
5043 *
e549f1c5 5044 * There are at least three other shadow password APIs. Many platforms
bcf53261
JH		 5045 * seem to contain more than one interface for accessing the shadow
5046 * password databases, possibly for compatibility reasons.
3813c136 5047 * The getsp*() is by far he simplest one, the other two interfaces
bcf53261
JH		 5048 * are much more complicated, but also very similar to each other.
5049 *
5050 * <sys/types.h>
5051 * <sys/security.h>
5052 * <prot.h>
5053 * struct pr_passwd *getprpw*();
5054 * The password is in
3813c136
JH		 5055 * char getprpw*(...).ufld.fd_encrypt[]
5056 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
bcf53261
JH		 5057 *
5058 * <sys/types.h>
5059 * <sys/security.h>
5060 * <prot.h>
5061 * struct es_passwd *getespw*();
5062 * The password is in
5063 * char *(getespw*(...).ufld.fd_encrypt)
3813c136 5064 * Mention HAS_GETESPWNAM here so that Configure probes for it.
bcf53261 5065 *
e1920a95 5066 * <userpw.h> (AIX)
e549f1c5
JH		 5067 * struct userpw *getuserpw();
5068 * The password is in
5069 * char *(getuserpw(...)).spw_upw_passwd
5070 * (but the de facto standard getpwnam() should work okay)
5071 *
3813c136 5072 * Mention I_PROT here so that Configure probes for it.
bcf53261
JH		 5073 *
5074 * In HP-UX for getprpw*() the manual page claims that one should include
5075 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5076 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5077 * and pp_sys.c already includes <shadow.h> if there is such.
3813c136
JH		 5078 *
5079 * Note that <sys/security.h> is already probed for, but currently
5080 * it is only included in special cases.
301e8125 5081 *
bcf53261
JH		 5082 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5083 * be preferred interface, even though also the getprpw*() interface
5084 * is available) one needs to link with -lsecurity -ldb -laud -lm.
3813c136
JH		 5085 * One also needs to call set_auth_parameters() in main() before
5086 * doing anything else, whether one is using getespw*() or getprpw*().
5087 *
5088 * Note that accessing the shadow databases can be magnitudes
5089 * slower than accessing the standard databases.
bcf53261
JH		 5090 *
5091 * --jhi
5092 */
a0d0e21e 5093
9e5f0c48
JH		 5094# if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5095 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5096 * the pw_comment is left uninitialized. */
5097 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5098# endif
5099
e3aefe8d
JH		 5100 switch (which) {
5101 case OP_GPWNAM:
edd309b7 5102 {
0bcc34c2 5103 const char* const name = POPpbytex;
edd309b7
JH		 5104 pwent = getpwnam(name);
5105 }
5106 break;
e3aefe8d 5107 case OP_GPWUID:
edd309b7
JH		 5108 {
5109 Uid_t uid = POPi;
5110 pwent = getpwuid(uid);
5111 }
e3aefe8d
JH		 5112 break;
5113 case OP_GPWENT:
1883634f 5114# ifdef HAS_GETPWENT
e3aefe8d 5115 pwent = getpwent();
faea9016
IRC		 5116#ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5117 if (pwent) pwent = getpwnam(pwent->pw_name);
5118#endif
1883634f 5119# else
a45d1c96 5120 DIE(aTHX_ PL_no_func, "getpwent");
1883634f 5121# endif
e3aefe8d
JH		 5122 break;
5123 }
8c0bfa08 5124
a0d0e21e
LW		 5125 EXTEND(SP, 10);
5126 if (GIMME != G_ARRAY) {
5127 PUSHs(sv = sv_newmortal());
5128 if (pwent) {
5129 if (which == OP_GPWNAM)
1883634f 5130# if Uid_t_sign <= 0
1e422769 5131 sv_setiv(sv, (IV)pwent->pw_uid);
1883634f 5132# else
23dcd6c8 5133 sv_setuv(sv, (UV)pwent->pw_uid);
1883634f 5134# endif
a0d0e21e
LW		 5135 else
5136 sv_setpv(sv, pwent->pw_name);
5137 }
5138 RETURN;
5139 }
5140
5141 if (pwent) {
7c58897d 5142 PUSHs(sv_2mortal(newSVpv(pwent->pw_name, 0)));
6ee623d5 5143
7c58897d 5144 PUSHs(sv = sv_2mortal(newSViv(0)));
3813c136
JH		 5145 /* If we have getspnam(), we try to dig up the shadow
5146 * password. If we are underprivileged, the shadow
5147 * interface will set the errno to EACCES or similar,
5148 * and return a null pointer. If this happens, we will
5149 * use the dummy password (usually "*" or "x") from the
5150 * standard password database.
5151 *
5152 * In theory we could skip the shadow call completely
5153 * if euid != 0 but in practice we cannot know which
5154 * security measures are guarding the shadow databases
5155 * on a random platform.
5156 *
5157 * Resist the urge to use additional shadow interfaces.
5158 * Divert the urge to writing an extension instead.
5159 *
5160 * --jhi */
e549f1c5
JH		 5161 /* Some AIX setups falsely(?) detect some getspnam(), which
5162 * has a different API than the Solaris/IRIX one. */
5163# if defined(HAS_GETSPNAM) && !defined(_AIX)
3813c136 5164 {
0bcc34c2
AL		 5165 const int saverrno = errno;
5166 const struct spwd * const spwent = getspnam(pwent->pw_name);
5167 /* Save and restore errno so that
3813c136
JH		 5168 * underprivileged attempts seem
5169 * to have never made the unsccessful
5170 * attempt to retrieve the shadow password. */
3813c136
JH		 5171 errno = saverrno;
5172 if (spwent && spwent->sp_pwdp)
5173 sv_setpv(sv, spwent->sp_pwdp);
5174 }
f1066039 5175# endif
e020c87d 5176# ifdef PWPASSWD
3813c136
JH		 5177 if (!SvPOK(sv)) /* Use the standard password, then. */
5178 sv_setpv(sv, pwent->pw_passwd);
e020c87d 5179# endif
3813c136 5180
1883634f 5181# ifndef INCOMPLETE_TAINTS
3813c136
JH		 5182 /* passwd is tainted because user himself can diddle with it.
5183 * admittedly not much and in a very limited way, but nevertheless. */
2959b6e3 5184 SvTAINTED_on(sv);
1883634f 5185# endif
6ee623d5 5186
1883634f 5187# if Uid_t_sign <= 0
7c58897d 5188 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_uid)));
1883634f 5189# else
7c58897d 5190 PUSHs(sv_2mortal(newSVuv((UV)pwent->pw_uid)));
1883634f 5191# endif
6ee623d5 5192
1883634f 5193# if Uid_t_sign <= 0
7c58897d 5194 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_gid)));
1883634f 5195# else
7c58897d 5196 PUSHs(sv_2mortal(newSVuv((UV)pwent->pw_gid)));
1883634f 5197# endif
3813c136
JH		 5198 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5199 * because of the poor interface of the Perl getpw*(),
5200 * not because there's some standard/convention saying so.
5201 * A better interface would have been to return a hash,
5202 * but we are accursed by our history, alas. --jhi. */
1883634f 5203# ifdef PWCHANGE
7c58897d 5204 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_change)));
6ee623d5 5205# else
1883634f 5206# ifdef PWQUOTA
7c58897d 5207 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_quota)));
1883634f 5208# else
a1757be1 5209# ifdef PWAGE
7c58897d
NC		 5210 PUSHs(sv_2mortal(newSVpv(pwent->pw_age, 0)));
5211# else
5212 /* I think that you can never get this compiled, but just in case. */
5213 PUSHs(sv_mortalcopy(&PL_sv_no));
a1757be1 5214# endif
6ee623d5
GS		 5215# endif
5216# endif
6ee623d5 5217
3813c136
JH		 5218 /* pw_class and pw_comment are mutually exclusive--.
5219 * see the above note for pw_change, pw_quota, and pw_age. */
1883634f 5220# ifdef PWCLASS
7c58897d 5221 PUSHs(sv_2mortal(newSVpv(pwent->pw_class, 0)));
1883634f
JH		 5222# else
5223# ifdef PWCOMMENT
7c58897d
NC		 5224 PUSHs(sv_2mortal(newSVpv(pwent->pw_comment, 0)));
5225# else
5226 /* I think that you can never get this compiled, but just in case. */
5227 PUSHs(sv_mortalcopy(&PL_sv_no));
1883634f 5228# endif
6ee623d5 5229# endif
6ee623d5 5230
1883634f 5231# ifdef PWGECOS
7c58897d
NC		 5232 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_gecos, 0)));
5233# else
5234 PUSHs(sv_mortalcopy(&PL_sv_no));
1883634f
JH		 5235# endif
5236# ifndef INCOMPLETE_TAINTS
d2719217 5237 /* pw_gecos is tainted because user himself can diddle with it. */
fb73857a 5238 SvTAINTED_on(sv);
1883634f 5239# endif
6ee623d5 5240
7c58897d 5241 PUSHs(sv_2mortal(newSVpv(pwent->pw_dir, 0)));
6ee623d5 5242
7c58897d 5243 PUSHs(sv = sv_2mortal(newSVpv(pwent->pw_shell, 0)));
1883634f 5244# ifndef INCOMPLETE_TAINTS
4602f195
JH		 5245 /* pw_shell is tainted because user himself can diddle with it. */
5246 SvTAINTED_on(sv);
1883634f 5247# endif
6ee623d5 5248
1883634f 5249# ifdef PWEXPIRE
7c58897d 5250 PUSHs(sv_2mortal(newSViv((IV)pwent->pw_expire)));
1883634f 5251# endif
a0d0e21e
LW		 5252 }
5253 RETURN;
5254#else
af51a00e 5255 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5256#endif
5257}
5258
5259PP(pp_spwent)
5260{
d493b042 5261#if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
97aff369 5262 dVAR; dSP;
a0d0e21e
LW		 5263 setpwent();
5264 RETPUSHYES;
5265#else
cea2e8a9 5266 DIE(aTHX_ PL_no_func, "setpwent");
a0d0e21e
LW		 5267#endif
5268}
5269
5270PP(pp_epwent)
5271{
28e8609d 5272#if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
97aff369 5273 dVAR; dSP;
a0d0e21e
LW		 5274 endpwent();
5275 RETPUSHYES;
5276#else
cea2e8a9 5277 DIE(aTHX_ PL_no_func, "endpwent");
a0d0e21e
LW		 5278#endif
5279}
5280
a0d0e21e
LW		 5281PP(pp_ggrent)
5282{
0994c4d0 5283#ifdef HAS_GROUP
97aff369 5284 dVAR; dSP;
6136c704
AL		 5285 const I32 which = PL_op->op_type;
5286 const struct group *grent;
a0d0e21e 5287
edd309b7 5288 if (which == OP_GGRNAM) {
0bcc34c2 5289 const char* const name = POPpbytex;
6136c704 5290 grent = (const struct group *)getgrnam(name);
edd309b7
JH		 5291 }
5292 else if (which == OP_GGRGID) {
0bcc34c2 5293 const Gid_t gid = POPi;
6136c704 5294 grent = (const struct group *)getgrgid(gid);
edd309b7 5295 }
a0d0e21e 5296 else
0994c4d0 5297#ifdef HAS_GETGRENT
a0d0e21e 5298 grent = (struct group *)getgrent();
0994c4d0
JH		 5299#else
5300 DIE(aTHX_ PL_no_func, "getgrent");
5301#endif
a0d0e21e
LW		 5302
5303 EXTEND(SP, 4);
5304 if (GIMME != G_ARRAY) {
6136c704
AL		 5305 SV * const sv = sv_newmortal();
5306
5307 PUSHs(sv);
a0d0e21e
LW		 5308 if (grent) {
5309 if (which == OP_GGRNAM)
1e422769 5310 sv_setiv(sv, (IV)grent->gr_gid);
a0d0e21e
LW		 5311 else
5312 sv_setpv(sv, grent->gr_name);
5313 }
5314 RETURN;
5315 }
5316
5317 if (grent) {
7c58897d 5318 PUSHs(sv_2mortal(newSVpv(grent->gr_name, 0)));
28e8609d 5319
28e8609d 5320#ifdef GRPASSWD
7c58897d
NC		 5321 PUSHs(sv_2mortal(newSVpv(grent->gr_passwd, 0)));
5322#else
5323 PUSHs(sv_mortalcopy(&PL_sv_no));
28e8609d
JH		 5324#endif
5325
7c58897d 5326 PUSHs(sv_2mortal(newSViv((IV)grent->gr_gid)));
28e8609d 5327
5b56e7c5 5328#if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
3d7e8424
JH		 5329 /* In UNICOS/mk (_CRAYMPP) the multithreading
5330 * versions (getgrnam_r, getgrgid_r)
5331 * seem to return an illegal pointer
5332 * as the group members list, gr_mem.
5333 * getgrent() doesn't even have a _r version
5334 * but the gr_mem is poisonous anyway.
5335 * So yes, you cannot get the list of group
5336 * members if building multithreaded in UNICOS/mk. */
931e0695 5337 PUSHs(space_join_names_mortal(grent->gr_mem));
3d7e8424 5338#endif
a0d0e21e
LW		 5339 }
5340
5341 RETURN;
5342#else
af51a00e 5343 DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
a0d0e21e
LW		 5344#endif
5345}
5346
5347PP(pp_sgrent)
5348{
28e8609d 5349#if defined(HAS_GROUP) && defined(HAS_SETGRENT)
97aff369 5350 dVAR; dSP;
a0d0e21e
LW		 5351 setgrent();
5352 RETPUSHYES;
5353#else
cea2e8a9 5354 DIE(aTHX_ PL_no_func, "setgrent");
a0d0e21e
LW		 5355#endif
5356}
5357
5358PP(pp_egrent)
5359{
28e8609d 5360#if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
97aff369 5361 dVAR; dSP;
a0d0e21e
LW		 5362 endgrent();
5363 RETPUSHYES;
5364#else
cea2e8a9 5365 DIE(aTHX_ PL_no_func, "endgrent");
a0d0e21e
LW		 5366#endif
5367}
5368
5369PP(pp_getlogin)
5370{
a0d0e21e 5371#ifdef HAS_GETLOGIN
97aff369 5372 dVAR; dSP; dTARGET;
a0d0e21e
LW		 5373 char *tmps;
5374 EXTEND(SP, 1);
76e3520e 5375 if (!(tmps = PerlProc_getlogin()))
a0d0e21e
LW		 5376 RETPUSHUNDEF;
5377 PUSHp(tmps, strlen(tmps));
5378 RETURN;
5379#else
cea2e8a9 5380 DIE(aTHX_ PL_no_func, "getlogin");
a0d0e21e
LW		 5381#endif
5382}
5383
5384/* Miscellaneous. */
5385
5386PP(pp_syscall)
5387{
d2719217 5388#ifdef HAS_SYSCALL
97aff369 5389 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
a0d0e21e
LW		 5390 register I32 items = SP - MARK;
5391 unsigned long a[20];
5392 register I32 i = 0;
5393 I32 retval = -1;
5394
3280af22 5395 if (PL_tainting) {
a0d0e21e 5396 while (++MARK <= SP) {
bbce6d69 5397 if (SvTAINTED(*MARK)) {
5398 TAINT;
5399 break;
5400 }
a0d0e21e
LW		 5401 }
5402 MARK = ORIGMARK;
5403 TAINT_PROPER("syscall");
5404 }
5405
5406 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5407 * or where sizeof(long) != sizeof(char*). But such machines will
5408 * not likely have syscall implemented either, so who cares?
5409 */
5410 while (++MARK <= SP) {
5411 if (SvNIOK(*MARK) || !i)
5412 a[i++] = SvIV(*MARK);
3280af22 5413 else if (*MARK == &PL_sv_undef)
748a9306 5414 a[i++] = 0;
301e8125 5415 else
8b6b16e7 5416 a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
a0d0e21e
LW		 5417 if (i > 15)
5418 break;
5419 }
5420 switch (items) {
5421 default:
cea2e8a9 5422 DIE(aTHX_ "Too many args to syscall");
a0d0e21e 5423 case 0:
cea2e8a9 5424 DIE(aTHX_ "Too few args to syscall");
a0d0e21e
LW		 5425 case 1:
5426 retval = syscall(a[0]);
5427 break;
5428 case 2:
5429 retval = syscall(a[0],a[1]);
5430 break;
5431 case 3:
5432 retval = syscall(a[0],a[1],a[2]);
5433 break;
5434 case 4:
5435 retval = syscall(a[0],a[1],a[2],a[3]);
5436 break;
5437 case 5:
5438 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5439 break;
5440 case 6:
5441 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5442 break;
5443 case 7:
5444 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5445 break;
5446 case 8:
5447 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5448 break;
5449#ifdef atarist
5450 case 9:
5451 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
5452 break;
5453 case 10:
5454 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
5455 break;
5456 case 11:
5457 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5458 a[10]);
5459 break;
5460 case 12:
5461 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5462 a[10],a[11]);
5463 break;
5464 case 13:
5465 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5466 a[10],a[11],a[12]);
5467 break;
5468 case 14:
5469 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5470 a[10],a[11],a[12],a[13]);
5471 break;
5472#endif /* atarist */
5473 }
5474 SP = ORIGMARK;
5475 PUSHi(retval);
5476 RETURN;
5477#else
cea2e8a9 5478 DIE(aTHX_ PL_no_func, "syscall");
a0d0e21e
LW		 5479#endif
5480}
5481
ff68c719 5482#ifdef FCNTL_EMULATE_FLOCK
301e8125 5483
ff68c719 5484/* XXX Emulate flock() with fcntl().
5485 What's really needed is a good file locking module.
5486*/
5487
cea2e8a9
GS		 5488static int
5489fcntl_emulate_flock(int fd, int operation)
ff68c719 5490{
5491 struct flock flock;
301e8125 5492
ff68c719 5493 switch (operation & ~LOCK_NB) {
5494 case LOCK_SH:
5495 flock.l_type = F_RDLCK;
5496 break;
5497 case LOCK_EX:
5498 flock.l_type = F_WRLCK;
5499 break;
5500 case LOCK_UN:
5501 flock.l_type = F_UNLCK;
5502 break;
5503 default:
5504 errno = EINVAL;
5505 return -1;
5506 }
5507 flock.l_whence = SEEK_SET;
d9b3e12d 5508 flock.l_start = flock.l_len = (Off_t)0;
301e8125 5509
ff68c719 5510 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5511}
5512
5513#endif /* FCNTL_EMULATE_FLOCK */
5514
5515#ifdef LOCKF_EMULATE_FLOCK
16d20bd9
AD		 5516
5517/* XXX Emulate flock() with lockf(). This is just to increase
5518 portability of scripts. The calls are not completely
5519 interchangeable. What's really needed is a good file
5520 locking module.
5521*/
5522
76c32331 5523/* The lockf() constants might have been defined in <unistd.h>.
5524 Unfortunately, <unistd.h> causes troubles on some mixed
5525 (BSD/POSIX) systems, such as SunOS 4.1.3.
16d20bd9
AD		 5526
5527 Further, the lockf() constants aren't POSIX, so they might not be
5528 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5529 just stick in the SVID values and be done with it. Sigh.
5530*/
5531
5532# ifndef F_ULOCK
5533# define F_ULOCK 0 /* Unlock a previously locked region */
5534# endif
5535# ifndef F_LOCK
5536# define F_LOCK 1 /* Lock a region for exclusive use */
5537# endif
5538# ifndef F_TLOCK
5539# define F_TLOCK 2 /* Test and lock a region for exclusive use */
5540# endif
5541# ifndef F_TEST
5542# define F_TEST 3 /* Test a region for other processes locks */
5543# endif
5544
cea2e8a9
GS		 5545static int
5546lockf_emulate_flock(int fd, int operation)
16d20bd9
AD		 5547{
5548 int i;
0bcc34c2 5549 const int save_errno = errno;
84902520
TB		 5550 Off_t pos;
5551
5552 /* flock locks entire file so for lockf we need to do the same */
6ad3d225 5553 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
84902520 5554 if (pos > 0) /* is seekable and needs to be repositioned */
6ad3d225 5555 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
08b714dd 5556 pos = -1; /* seek failed, so don't seek back afterwards */
84902520
TB		 5557 errno = save_errno;
5558
16d20bd9
AD		 5559 switch (operation) {
5560
5561 /* LOCK_SH - get a shared lock */
5562 case LOCK_SH:
5563 /* LOCK_EX - get an exclusive lock */
5564 case LOCK_EX:
5565 i = lockf (fd, F_LOCK, 0);
5566 break;
5567
5568 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5569 case LOCK_SH|LOCK_NB:
5570 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5571 case LOCK_EX|LOCK_NB:
5572 i = lockf (fd, F_TLOCK, 0);
5573 if (i == -1)
5574 if ((errno == EAGAIN) || (errno == EACCES))
5575 errno = EWOULDBLOCK;
5576 break;
5577
ff68c719 5578 /* LOCK_UN - unlock (non-blocking is a no-op) */
16d20bd9 5579 case LOCK_UN:
ff68c719 5580 case LOCK_UN|LOCK_NB:
16d20bd9
AD		 5581 i = lockf (fd, F_ULOCK, 0);
5582 break;
5583
5584 /* Default - can't decipher operation */
5585 default:
5586 i = -1;
5587 errno = EINVAL;
5588 break;
5589 }
84902520
TB		 5590
5591 if (pos > 0) /* need to restore position of the handle */
6ad3d225 5592 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
84902520 5593
16d20bd9
AD		 5594 return (i);
5595}
ff68c719 5596
5597#endif /* LOCKF_EMULATE_FLOCK */
241d1a3b
NC		 5598
5599/*
5600 * Local variables:
5601 * c-indentation-style: bsd
5602 * c-basic-offset: 4
5603 * indent-tabs-mode: t
5604 * End:
5605 *
37442d52
RGS		 5606 * ex: set ts=8 sts=4 sw=4 noet:
5607 */
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