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[perl5.git] / doio.c
CommitLineData
a0d0e21e 1/* doio.c
a687059c 2 *
4bb101f2 3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
b5f8cc5c 4 * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others
a687059c 5 *
6e21c824
LW
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.
a687059c 8 *
a0d0e21e
LW
9 */
10
11/*
12 * "Far below them they saw the white waters pour into a foaming bowl, and
13 * then swirl darkly about a deep oval basin in the rocks, until they found
14 * their way out again through a narrow gate, and flowed away, fuming and
15 * chattering, into calmer and more level reaches."
a687059c
LW
16 */
17
18#include "EXTERN.h"
864dbfa3 19#define PERL_IN_DOIO_C
a687059c
LW
20#include "perl.h"
21
fe14fcc3 22#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
aec308ec 23#ifndef HAS_SEM
c2ab57d4 24#include <sys/ipc.h>
aec308ec 25#endif
fe14fcc3 26#ifdef HAS_MSG
c2ab57d4 27#include <sys/msg.h>
e5d73d77 28#endif
fe14fcc3 29#ifdef HAS_SHM
c2ab57d4 30#include <sys/shm.h>
a0d0e21e 31# ifndef HAS_SHMAT_PROTOTYPE
20ce7b12 32 extern Shmat_t shmat (int, char *, int);
a0d0e21e 33# endif
c2ab57d4 34#endif
e5d73d77 35#endif
c2ab57d4 36
663a0e37 37#ifdef I_UTIME
3730b96e 38# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 39# include <sys/utime.h>
40# else
41# include <utime.h>
42# endif
663a0e37 43#endif
85aff577 44
85aff577
CS
45#ifdef O_EXCL
46# define OPEN_EXCL O_EXCL
47#else
48# define OPEN_EXCL 0
49#endif
a687059c 50
76121258 51#include <signal.h>
76121258 52
a687059c 53bool
6170680b
IZ
54Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
55 int rawmode, int rawperm, PerlIO *supplied_fp)
56{
a567e93b
NIS
57 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
58 supplied_fp, (SV **) NULL, 0);
6170680b
IZ
59}
60
61bool
62Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
63 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
64 I32 num_svs)
a687059c 65{
a567e93b
NIS
66 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
67 supplied_fp, &svs, 1);
68}
69
70bool
71Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
72 int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
73 I32 num_svs)
74{
a0d0e21e 75 register IO *io = GvIOn(gv);
760ac839
LW
76 PerlIO *saveifp = Nullfp;
77 PerlIO *saveofp = Nullfp;
ee518936 78 int savefd = -1;
9f37169a 79 char savetype = IoTYPE_CLOSED;
c07a80fd 80 int writing = 0;
760ac839 81 PerlIO *fp;
c07a80fd 82 int fd;
83 int result;
3500f679 84 bool was_fdopen = FALSE;
16fe6d59 85 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
b931b1d9 86 char *type = NULL;
ee518936
NIS
87 char mode[8]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
88 SV *namesv;
a687059c 89
b931b1d9 90 Zero(mode,sizeof(mode),char);
3280af22 91 PL_forkprocess = 1; /* assume true if no fork */
c07a80fd 92
b931b1d9 93 /* Collect default raw/crlf info from the op */
16fe6d59 94 if (PL_op && PL_op->op_type == OP_OPEN) {
c2be40b1 95 /* set up IO layers */
16fe6d59
GS
96 U8 flags = PL_op->op_private;
97 in_raw = (flags & OPpOPEN_IN_RAW);
98 in_crlf = (flags & OPpOPEN_IN_CRLF);
99 out_raw = (flags & OPpOPEN_OUT_RAW);
100 out_crlf = (flags & OPpOPEN_OUT_CRLF);
101 }
102
b931b1d9 103 /* If currently open - close before we re-open */
a0d0e21e 104 if (IoIFP(io)) {
760ac839 105 fd = PerlIO_fileno(IoIFP(io));
ee518936
NIS
106 if (IoTYPE(io) == IoTYPE_STD) {
107 /* This is a clone of one of STD* handles */
c2ab57d4 108 result = 0;
ee518936
NIS
109 }
110 else if (fd >= 0 && fd <= PL_maxsysfd) {
111 /* This is one of the original STD* handles */
112 saveifp = IoIFP(io);
113 saveofp = IoOFP(io);
8990e307 114 savetype = IoTYPE(io);
ee518936
NIS
115 savefd = fd;
116 result = 0;
6e21c824 117 }
50952442 118 else if (IoTYPE(io) == IoTYPE_PIPE)
3028581b 119 result = PerlProc_pclose(IoIFP(io));
8990e307
LW
120 else if (IoIFP(io) != IoOFP(io)) {
121 if (IoOFP(io)) {
760ac839 122 result = PerlIO_close(IoOFP(io));
6170680b 123 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
c2ab57d4
LW
124 }
125 else
760ac839 126 result = PerlIO_close(IoIFP(io));
a687059c 127 }
a687059c 128 else
760ac839 129 result = PerlIO_close(IoIFP(io));
ee518936
NIS
130 if (result == EOF && fd > PL_maxsysfd) {
131 /* Why is this not Perl_warn*() call ? */
bf49b057 132 PerlIO_printf(Perl_error_log,
6170680b
IZ
133 "Warning: unable to close filehandle %s properly.\n",
134 GvENAME(gv));
ee518936 135 }
8990e307 136 IoOFP(io) = IoIFP(io) = Nullfp;
a687059c 137 }
c07a80fd 138
139 if (as_raw) {
b931b1d9 140 /* sysopen style args, i.e. integer mode and permissions */
ee518936 141 STRLEN ix = 0;
3dccc55c
JH
142 int appendtrunc =
143 0
d1da7611 144#ifdef O_APPEND /* Not fully portable. */
3dccc55c 145 |O_APPEND
d1da7611
JH
146#endif
147#ifdef O_TRUNC /* Not fully portable. */
3dccc55c 148 |O_TRUNC
d1da7611 149#endif
3dccc55c
JH
150 ;
151 int modifyingmode =
152 O_WRONLY|O_RDWR|O_CREAT|appendtrunc;
153 int ismodifying;
154
155 if (num_svs != 0) {
156 Perl_croak(aTHX_ "panic: sysopen with multiple args");
157 }
158 /* It's not always
159
160 O_RDONLY 0
161 O_WRONLY 1
162 O_RDWR 2
163
164 It might be (in OS/390 and Mac OS Classic it is)
165
166 O_WRONLY 1
167 O_RDONLY 2
168 O_RDWR 3
169
170 This means that simple & with O_RDWR would look
171 like O_RDONLY is present. Therefore we have to
172 be more careful.
173 */
174 if ((ismodifying = (rawmode & modifyingmode))) {
175 if ((ismodifying & O_WRONLY) == O_WRONLY ||
176 (ismodifying & O_RDWR) == O_RDWR ||
177 (ismodifying & (O_CREAT|appendtrunc)))
178 TAINT_PROPER("sysopen");
179 }
3b6c1aba 180 mode[ix++] = IoTYPE_NUMERIC; /* Marker to openn to use numeric "sysopen" */
b931b1d9 181
09458382 182#if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
b94c04ac 183 rawmode |= O_LARGEFILE; /* Transparently largefiley. */
5ff3f7a4
GS
184#endif
185
06c7082d 186 IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing);
ee518936
NIS
187
188 namesv = sv_2mortal(newSVpvn(name,strlen(name)));
189 num_svs = 1;
190 svp = &namesv;
1141d9f8 191 type = Nullch;
b94c04ac 192 fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp);
a687059c 193 }
c07a80fd 194 else {
b931b1d9 195 /* Regular (non-sys) open */
faecd977 196 char *oname = name;
faecd977 197 STRLEN olen = len;
b931b1d9
NIS
198 char *tend;
199 int dodup = 0;
ecdeb87c 200 PerlIO *that_fp = NULL;
c07a80fd 201
faecd977 202 type = savepvn(name, len);
b931b1d9 203 tend = type+len;
faecd977 204 SAVEFREEPV(type);
eb649f83
AMS
205
206 /* Lose leading and trailing white space */
207 /*SUPPRESS 530*/
208 for (; isSPACE(*type); type++) ;
209 while (tend > type && isSPACE(tend[-1]))
210 *--tend = '\0';
211
6170680b 212 if (num_svs) {
c2be40b1 213 /* New style explicit name, type is just mode and layer info */
fe9745bf 214 STRLEN l = 0;
9a869a14
RGS
215#ifdef USE_STDIO
216 if (SvROK(*svp) && !strchr(name,'&')) {
217 if (ckWARN(WARN_IO))
218 Perl_warner(aTHX_ packWARN(WARN_IO),
219 "Can't open a reference");
93189314 220 SETERRNO(EINVAL, LIB_INVARG);
9a869a14
RGS
221 goto say_false;
222 }
223#endif /* USE_STDIO */
f6c77cf1 224 name = SvOK(*svp) ? SvPV(*svp, l) : "";
faecd977
GS
225 len = (I32)l;
226 name = savepvn(name, len);
227 SAVEFREEPV(name);
6170680b 228 }
faecd977 229 else {
faecd977 230 name = type;
b931b1d9 231 len = tend-type;
faecd977 232 }
6170680b 233 IoTYPE(io) = *type;
516a5887 234 if ((*type == IoTYPE_RDWR) && /* scary */
01a8ea99 235 (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
516a5887 236 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
c2be40b1 237 TAINT_PROPER("open");
6170680b 238 mode[1] = *type++;
c07a80fd 239 writing = 1;
a687059c 240 }
c07a80fd 241
9f37169a 242 if (*type == IoTYPE_PIPE) {
b931b1d9
NIS
243 if (num_svs) {
244 if (type[1] != IoTYPE_STD) {
c2be40b1 245 unknown_open_mode:
b931b1d9
NIS
246 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
247 }
248 type++;
6170680b 249 }
c07a80fd 250 /*SUPPRESS 530*/
b931b1d9 251 for (type++; isSPACE(*type); type++) ;
faecd977 252 if (!num_svs) {
6170680b 253 name = type;
b931b1d9 254 len = tend-type;
faecd977 255 }
4a7d1889
NIS
256 if (*name == '\0') {
257 /* command is missing 19990114 */
06eaf0bc 258 if (ckWARN(WARN_PIPE))
9014280d 259 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
06eaf0bc
GS
260 errno = EPIPE;
261 goto say_false;
262 }
6170680b 263 if (strNE(name,"-") || num_svs)
c07a80fd 264 TAINT_ENV();
265 TAINT_PROPER("piped open");
b931b1d9 266 if (!num_svs && name[len-1] == '|') {
faecd977 267 name[--len] = '\0' ;
599cee73 268 if (ckWARN(WARN_PIPE))
9014280d 269 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe");
7b8d334a 270 }
a1d180c4 271 mode[0] = 'w';
c07a80fd 272 writing = 1;
a1d180c4
NIS
273 if (out_raw)
274 strcat(mode, "b");
275 else if (out_crlf)
276 strcat(mode, "t");
4a7d1889
NIS
277 if (num_svs > 1) {
278 fp = PerlProc_popen_list(mode, num_svs, svp);
279 }
280 else {
281 fp = PerlProc_popen(name,mode);
282 }
1771866f
NIS
283 if (num_svs) {
284 if (*type) {
285 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
286 goto say_false;
287 }
288 }
289 }
c2be40b1 290 } /* IoTYPE_PIPE */
9f37169a 291 else if (*type == IoTYPE_WRONLY) {
c07a80fd 292 TAINT_PROPER("open");
6170680b 293 type++;
9f37169a
JH
294 if (*type == IoTYPE_WRONLY) {
295 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
50952442 296 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
6170680b 297 type++;
a0d0e21e 298 }
ee518936 299 else {
c07a80fd 300 mode[0] = 'w';
ee518936 301 }
c07a80fd 302 writing = 1;
303
16fe6d59
GS
304 if (out_raw)
305 strcat(mode, "b");
306 else if (out_crlf)
307 strcat(mode, "t");
308
6170680b 309 if (*type == '&') {
c07a80fd 310 duplicity:
ecdeb87c 311 dodup = PERLIO_DUP_FD;
e620cd72
NIS
312 type++;
313 if (*type == '=') {
c07a80fd 314 dodup = 0;
e620cd72 315 type++;
4a7d1889 316 }
ee518936 317 if (!num_svs && !*type && supplied_fp) {
4a7d1889 318 /* "<+&" etc. is used by typemaps */
c07a80fd 319 fp = supplied_fp;
ee518936 320 }
a0d0e21e 321 else {
e620cd72
NIS
322 if (num_svs > 1) {
323 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
324 }
54edfe98
NIS
325 /*SUPPRESS 530*/
326 for (; isSPACE(*type); type++) ;
1771866f 327 if (num_svs && (SvIOK(*svp) || (SvPOK(*svp) && looks_like_number(*svp)))) {
e620cd72 328 fd = SvUV(*svp);
24a7a40d 329 num_svs = 0;
ee518936 330 }
e620cd72 331 else if (isDIGIT(*type)) {
e620cd72
NIS
332 fd = atoi(type);
333 }
c07a80fd 334 else {
335 IO* thatio;
e620cd72
NIS
336 if (num_svs) {
337 thatio = sv_2io(*svp);
338 }
339 else {
340 GV *thatgv;
e620cd72
NIS
341 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
342 thatio = GvIO(thatgv);
343 }
c07a80fd 344 if (!thatio) {
6e21c824 345#ifdef EINVAL
93189314 346 SETERRNO(EINVAL,SS_IVCHAN);
6e21c824 347#endif
c07a80fd 348 goto say_false;
349 }
f4e789af 350 if ((that_fp = IoIFP(thatio))) {
7211d486
JH
351 /* Flush stdio buffer before dup. --mjd
352 * Unfortunately SEEK_CURing 0 seems to
353 * be optimized away on most platforms;
354 * only Solaris and Linux seem to flush
355 * on that. --jhi */
2c534a3f
NC
356#ifdef USE_SFIO
357 /* sfio fails to clear error on next
358 sfwrite, contrary to documentation.
359 -- Nick Clark */
ecdeb87c
NIS
360 if (PerlIO_seek(that_fp, 0, SEEK_CUR) == -1)
361 PerlIO_clearerr(that_fp);
2c534a3f 362#endif
7211d486
JH
363 /* On the other hand, do all platforms
364 * take gracefully to flushing a read-only
365 * filehandle? Perhaps we should do
366 * fsetpos(src)+fgetpos(dst)? --nik */
ecdeb87c
NIS
367 PerlIO_flush(that_fp);
368 fd = PerlIO_fileno(that_fp);
0759c907
JH
369 /* When dup()ing STDIN, STDOUT or STDERR
370 * explicitly set appropriate access mode */
f4e789af
NC
371 if (that_fp == PerlIO_stdout()
372 || that_fp == PerlIO_stderr())
0759c907 373 IoTYPE(io) = IoTYPE_WRONLY;
f4e789af 374 else if (that_fp == PerlIO_stdin())
0759c907
JH
375 IoTYPE(io) = IoTYPE_RDONLY;
376 /* When dup()ing a socket, say result is
377 * one as well */
378 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
50952442 379 IoTYPE(io) = IoTYPE_SOCKET;
c07a80fd 380 }
381 else
382 fd = -1;
a0d0e21e 383 }
ee518936 384 if (!num_svs)
1141d9f8 385 type = Nullch;
ecdeb87c
NIS
386 if (that_fp) {
387 fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup);
388 }
389 else {
c07a80fd 390 if (dodup)
ecdeb87c
NIS
391 fd = PerlLIO_dup(fd);
392 else
393 was_fdopen = TRUE;
394 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
395 if (dodup)
396 PerlLIO_close(fd);
397 }
faecd977 398 }
c07a80fd 399 }
ee518936 400 } /* & */
c07a80fd 401 else {
402 /*SUPPRESS 530*/
6170680b 403 for (; isSPACE(*type); type++) ;
b931b1d9
NIS
404 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
405 /*SUPPRESS 530*/
406 type++;
760ac839 407 fp = PerlIO_stdout();
50952442 408 IoTYPE(io) = IoTYPE_STD;
7cf31beb
NIS
409 if (num_svs > 1) {
410 Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD);
411 }
c07a80fd 412 }
413 else {
ee518936
NIS
414 if (!num_svs) {
415 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
416 num_svs = 1;
417 svp = &namesv;
1141d9f8 418 type = Nullch;
ee518936 419 }
6e60e805 420 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
c07a80fd 421 }
ee518936 422 } /* !& */
7e72d509
JH
423 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
424 goto unknown_open_mode;
c2be40b1 425 } /* IoTYPE_WRONLY */
9f37169a 426 else if (*type == IoTYPE_RDONLY) {
c07a80fd 427 /*SUPPRESS 530*/
6170680b 428 for (type++; isSPACE(*type); type++) ;
bf38876a 429 mode[0] = 'r';
16fe6d59
GS
430 if (in_raw)
431 strcat(mode, "b");
432 else if (in_crlf)
433 strcat(mode, "t");
434
6170680b 435 if (*type == '&') {
bf38876a 436 goto duplicity;
6170680b 437 }
b931b1d9
NIS
438 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
439 /*SUPPRESS 530*/
440 type++;
760ac839 441 fp = PerlIO_stdin();
50952442 442 IoTYPE(io) = IoTYPE_STD;
7cf31beb
NIS
443 if (num_svs > 1) {
444 Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD);
445 }
a687059c 446 }
ee518936
NIS
447 else {
448 if (!num_svs) {
449 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
450 num_svs = 1;
451 svp = &namesv;
1141d9f8 452 type = Nullch;
ee518936 453 }
6e60e805 454 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
ee518936 455 }
7e72d509
JH
456 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
457 goto unknown_open_mode;
c2be40b1
JH
458 } /* IoTYPE_RDONLY */
459 else if ((num_svs && /* '-|...' or '...|' */
460 type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
b931b1d9 461 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
6170680b 462 if (num_svs) {
b931b1d9 463 type += 2; /* skip over '-|' */
6170680b
IZ
464 }
465 else {
b931b1d9
NIS
466 *--tend = '\0';
467 while (tend > type && isSPACE(tend[-1]))
468 *--tend = '\0';
6170680b
IZ
469 /*SUPPRESS 530*/
470 for (; isSPACE(*type); type++) ;
471 name = type;
b931b1d9 472 len = tend-type;
6170680b 473 }
4a7d1889
NIS
474 if (*name == '\0') {
475 /* command is missing 19990114 */
06eaf0bc 476 if (ckWARN(WARN_PIPE))
9014280d 477 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
06eaf0bc
GS
478 errno = EPIPE;
479 goto say_false;
480 }
6170680b 481 if (strNE(name,"-") || num_svs)
79072805
LW
482 TAINT_ENV();
483 TAINT_PROPER("piped open");
a1d180c4
NIS
484 mode[0] = 'r';
485 if (in_raw)
486 strcat(mode, "b");
487 else if (in_crlf)
488 strcat(mode, "t");
4a7d1889
NIS
489 if (num_svs > 1) {
490 fp = PerlProc_popen_list(mode,num_svs,svp);
491 }
e620cd72 492 else {
4a7d1889
NIS
493 fp = PerlProc_popen(name,mode);
494 }
50952442 495 IoTYPE(io) = IoTYPE_PIPE;
1771866f
NIS
496 if (num_svs) {
497 for (; isSPACE(*type); type++) ;
498 if (*type) {
499 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
500 goto say_false;
501 }
502 }
503 }
a687059c 504 }
c2be40b1 505 else { /* layer(Args) */
6170680b 506 if (num_svs)
c2be40b1 507 goto unknown_open_mode;
6170680b 508 name = type;
50952442 509 IoTYPE(io) = IoTYPE_RDONLY;
99b89507
LW
510 /*SUPPRESS 530*/
511 for (; isSPACE(*name); name++) ;
88b61e10
NIS
512 mode[0] = 'r';
513 if (in_raw)
514 strcat(mode, "b");
515 else if (in_crlf)
516 strcat(mode, "t");
a687059c 517 if (strEQ(name,"-")) {
760ac839 518 fp = PerlIO_stdin();
50952442 519 IoTYPE(io) = IoTYPE_STD;
a687059c 520 }
16fe6d59 521 else {
ee518936
NIS
522 if (!num_svs) {
523 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
524 num_svs = 1;
525 svp = &namesv;
1141d9f8 526 type = Nullch;
ee518936 527 }
6e60e805 528 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
16fe6d59 529 }
a687059c
LW
530 }
531 }
bee1dbe2 532 if (!fp) {
50952442 533 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
9014280d 534 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
6e21c824 535 goto say_false;
bee1dbe2 536 }
a00b5bd3
NIS
537
538 if (ckWARN(WARN_IO)) {
539 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
540 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
9014280d 541 Perl_warner(aTHX_ packWARN(WARN_IO),
97828cef
RGS
542 "Filehandle STD%s reopened as %s only for input",
543 ((fp == PerlIO_stdout()) ? "OUT" : "ERR"),
544 GvENAME(gv));
a00b5bd3 545 }
ee518936 546 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
9014280d 547 Perl_warner(aTHX_ packWARN(WARN_IO),
97828cef
RGS
548 "Filehandle STDIN reopened as %s only for output",
549 GvENAME(gv));
a00b5bd3
NIS
550 }
551 }
552
e99cca91 553 fd = PerlIO_fileno(fp);
e934609f
JH
554 /* If there is no fd (e.g. PerlIO::scalar) assume it isn't a
555 * socket - this covers PerlIO::scalar - otherwise unless we "know" the
e99cca91
NIS
556 * type probe for socket-ness.
557 */
558 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) {
559 if (PerlLIO_fstat(fd,&PL_statbuf) < 0) {
560 /* If PerlIO claims to have fd we had better be able to fstat() it. */
561 (void) PerlIO_close(fp);
6e21c824 562 goto say_false;
a687059c 563 }
7114a2d2 564#ifndef PERL_MICRO
3280af22 565 if (S_ISSOCK(PL_statbuf.st_mode))
50952442 566 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
99b89507
LW
567#ifdef HAS_SOCKET
568 else if (
c623bd54 569#ifdef S_IFMT
3280af22 570 !(PL_statbuf.st_mode & S_IFMT)
99b89507 571#else
b28d0864 572 !PL_statbuf.st_mode
99b89507 573#endif
0759c907
JH
574 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
575 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
576 ) { /* on OS's that return 0 on fstat()ed pipe */
e99cca91
NIS
577 char tmpbuf[256];
578 Sock_size_t buflen = sizeof tmpbuf;
579 if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0
580 || errno != ENOTSOCK)
581 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
582 /* but some return 0 for streams too, sigh */
99b89507 583 }
e99cca91 584#endif /* HAS_SOCKET */
7114a2d2 585#endif /* !PERL_MICRO */
a687059c 586 }
e99cca91
NIS
587
588 /* Eeek - FIXME !!!
589 * If this is a standard handle we discard all the layer stuff
590 * and just dup the fd into whatever was on the handle before !
591 */
592
6e21c824 593 if (saveifp) { /* must use old fp? */
f5b9d040 594 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
24c23ab4 595 then dup the new fileno down
f5b9d040 596 */
6e21c824 597 if (saveofp) {
f5b9d040 598 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
6e21c824 599 if (saveofp != saveifp) { /* was a socket? */
760ac839 600 PerlIO_close(saveofp);
6e21c824
LW
601 }
602 }
6e60e805 603 if (savefd != fd) {
e934609f 604 /* Still a small can-of-worms here if (say) PerlIO::scalar
ecdeb87c
NIS
605 is assigned to (say) STDOUT - for now let dup2() fail
606 and provide the error
607 */
bd4a5668
NIS
608 if (PerlLIO_dup2(fd, savefd) < 0) {
609 (void)PerlIO_close(fp);
610 goto say_false;
611 }
d082dcd6 612#ifdef VMS
6e60e805 613 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
d0e2cf63
AMS
614 char newname[FILENAME_MAX+1];
615 if (PerlIO_getname(fp, newname)) {
616 if (fd == PerlIO_fileno(PerlIO_stdout()))
617 Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
618 if (fd == PerlIO_fileno(PerlIO_stderr()))
619 Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
620 }
d082dcd6
JH
621 }
622#endif
d0e2cf63
AMS
623
624#if !defined(WIN32)
625 /* PL_fdpid isn't used on Windows, so avoid this useless work.
626 * XXX Probably the same for a lot of other places. */
627 {
628 Pid_t pid;
629 SV *sv;
630
631 LOCK_FDPID_MUTEX;
632 sv = *av_fetch(PL_fdpid,fd,TRUE);
633 (void)SvUPGRADE(sv, SVt_IV);
634 pid = SvIVX(sv);
635 SvIVX(sv) = 0;
636 sv = *av_fetch(PL_fdpid,savefd,TRUE);
637 (void)SvUPGRADE(sv, SVt_IV);
638 SvIVX(sv) = pid;
639 UNLOCK_FDPID_MUTEX;
640 }
641#endif
642
e212fc47
AMS
643 if (was_fdopen) {
644 /* need to close fp without closing underlying fd */
645 int ofd = PerlIO_fileno(fp);
646 int dupfd = PerlLIO_dup(ofd);
03e631df
JH
647#if defined(HAS_FCNTL) && defined(F_SETFD)
648 /* Assume if we have F_SETFD we have F_GETFD */
649 int coe = fcntl(ofd,F_GETFD);
650#endif
e212fc47
AMS
651 PerlIO_close(fp);
652 PerlLIO_dup2(dupfd,ofd);
03e631df
JH
653#if defined(HAS_FCNTL) && defined(F_SETFD)
654 /* The dup trick has lost close-on-exec on ofd */
655 fcntl(ofd,F_SETFD, coe);
656#endif
e212fc47 657 PerlLIO_close(dupfd);
ecdeb87c 658 }
e212fc47
AMS
659 else
660 PerlIO_close(fp);
6e21c824
LW
661 }
662 fp = saveifp;
760ac839 663 PerlIO_clearerr(fp);
e99cca91 664 fd = PerlIO_fileno(fp);
6e21c824 665 }
a0d0e21e 666#if defined(HAS_FCNTL) && defined(F_SETFD)
e99cca91 667 if (fd >= 0) {
a8710ca1 668 int save_errno = errno;
a8710ca1
GS
669 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
670 errno = save_errno;
671 }
1462b684 672#endif
8990e307 673 IoIFP(io) = fp;
b931b1d9 674
684bef36 675 IoFLAGS(io) &= ~IOf_NOLINE;
bf38876a 676 if (writing) {
50952442 677 if (IoTYPE(io) == IoTYPE_SOCKET
e99cca91 678 || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(PL_statbuf.st_mode)) ) {
a33cf58c 679 char *s = mode;
3b6c1aba
JH
680 if (*s == IoTYPE_IMPLICIT || *s == IoTYPE_NUMERIC)
681 s++;
a33cf58c 682 *s = 'w';
1feb1812 683 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,s,fd,0,0,NULL,0,svp))) {
760ac839 684 PerlIO_close(fp);
8990e307 685 IoIFP(io) = Nullfp;
6e21c824 686 goto say_false;
fe14fcc3 687 }
1462b684
LW
688 }
689 else
8990e307 690 IoOFP(io) = fp;
bf38876a 691 }
a687059c 692 return TRUE;
6e21c824
LW
693
694say_false:
8990e307
LW
695 IoIFP(io) = saveifp;
696 IoOFP(io) = saveofp;
697 IoTYPE(io) = savetype;
6e21c824 698 return FALSE;
a687059c
LW
699}
700
760ac839 701PerlIO *
864dbfa3 702Perl_nextargv(pTHX_ register GV *gv)
a687059c 703{
79072805 704 register SV *sv;
99b89507 705#ifndef FLEXFILENAMES
c623bd54
LW
706 int filedev;
707 int fileino;
99b89507 708#endif
761237fe
JB
709 Uid_t fileuid;
710 Gid_t filegid;
18708f5a 711 IO *io = GvIOp(gv);
fe14fcc3 712
3280af22
NIS
713 if (!PL_argvoutgv)
714 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
18708f5a
GS
715 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
716 IoFLAGS(io) &= ~IOf_START;
7a1c5554
GS
717 if (PL_inplace) {
718 if (!PL_argvout_stack)
719 PL_argvout_stack = newAV();
18708f5a 720 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
7a1c5554 721 }
18708f5a 722 }
3280af22
NIS
723 if (PL_filemode & (S_ISUID|S_ISGID)) {
724 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
fe14fcc3 725#ifdef HAS_FCHMOD
c797f2d8
DM
726 if (PL_lastfd != -1)
727 (void)fchmod(PL_lastfd,PL_filemode);
fe14fcc3 728#else
b28d0864 729 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
fe14fcc3
LW
730#endif
731 }
c797f2d8 732 PL_lastfd = -1;
3280af22 733 PL_filemode = 0;
5c501b37
JH
734 if (!GvAV(gv))
735 return Nullfp;
79072805 736 while (av_len(GvAV(gv)) >= 0) {
85aff577 737 STRLEN oldlen;
79072805 738 sv = av_shift(GvAV(gv));
8990e307 739 SAVEFREESV(sv);
79072805
LW
740 sv_setsv(GvSV(gv),sv);
741 SvSETMAGIC(GvSV(gv));
3280af22 742 PL_oldname = SvPVx(GvSV(gv), oldlen);
9d116dd7 743 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
3280af22 744 if (PL_inplace) {
79072805 745 TAINT_PROPER("inplace open");
3280af22 746 if (oldlen == 1 && *PL_oldname == '-') {
4633a7c4 747 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
a0d0e21e 748 return IoIFP(GvIOp(gv));
c623bd54 749 }
99b89507 750#ifndef FLEXFILENAMES
b28d0864
NIS
751 filedev = PL_statbuf.st_dev;
752 fileino = PL_statbuf.st_ino;
99b89507 753#endif
3280af22
NIS
754 PL_filemode = PL_statbuf.st_mode;
755 fileuid = PL_statbuf.st_uid;
756 filegid = PL_statbuf.st_gid;
757 if (!S_ISREG(PL_filemode)) {
0453d815 758 if (ckWARN_d(WARN_INPLACE))
9014280d 759 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
0453d815
PM
760 "Can't do inplace edit: %s is not a regular file",
761 PL_oldname );
79072805 762 do_close(gv,FALSE);
c623bd54
LW
763 continue;
764 }
3280af22
NIS
765 if (*PL_inplace) {
766 char *star = strchr(PL_inplace, '*');
2d259d92 767 if (star) {
3280af22 768 char *begin = PL_inplace;
2d259d92
CK
769 sv_setpvn(sv, "", 0);
770 do {
771 sv_catpvn(sv, begin, star - begin);
3280af22 772 sv_catpvn(sv, PL_oldname, oldlen);
2d259d92
CK
773 begin = ++star;
774 } while ((star = strchr(begin, '*')));
3d66d7bb
GS
775 if (*begin)
776 sv_catpv(sv,begin);
2d259d92
CK
777 }
778 else {
3280af22 779 sv_catpv(sv,PL_inplace);
2d259d92 780 }
c623bd54 781#ifndef FLEXFILENAMES
5f74f29c
JH
782 if ((PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
783 && PL_statbuf.st_dev == filedev
784 && PL_statbuf.st_ino == fileino)
39e571d4 785#ifdef DJGPP
5f74f29c 786 || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0)
39e571d4 787#endif
f248d071
GS
788 )
789 {
790 if (ckWARN_d(WARN_INPLACE))
9014280d 791 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
35c1215d
NC
792 "Can't do inplace edit: %"SVf" would not be unique",
793 sv);
79072805 794 do_close(gv,FALSE);
c623bd54
LW
795 continue;
796 }
797#endif
fe14fcc3 798#ifdef HAS_RENAME
2585f9a3 799#if !defined(DOSISH) && !defined(__CYGWIN__) && !defined(EPOC)
3280af22 800 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
0453d815 801 if (ckWARN_d(WARN_INPLACE))
9014280d 802 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
35c1215d
NC
803 "Can't rename %s to %"SVf": %s, skipping file",
804 PL_oldname, sv, Strerror(errno) );
79072805 805 do_close(gv,FALSE);
c623bd54
LW
806 continue;
807 }
a687059c 808#else
79072805 809 do_close(gv,FALSE);
3028581b 810 (void)PerlLIO_unlink(SvPVX(sv));
b28d0864 811 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
9d116dd7 812 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
55497cff 813#endif /* DOSISH */
ff8e2863 814#else
463ee0b2 815 (void)UNLINK(SvPVX(sv));
b28d0864 816 if (link(PL_oldname,SvPVX(sv)) < 0) {
0453d815 817 if (ckWARN_d(WARN_INPLACE))
9014280d 818 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
35c1215d
NC
819 "Can't rename %s to %"SVf": %s, skipping file",
820 PL_oldname, sv, Strerror(errno) );
79072805 821 do_close(gv,FALSE);
c623bd54
LW
822 continue;
823 }
b28d0864 824 (void)UNLINK(PL_oldname);
a687059c
LW
825#endif
826 }
827 else {
c030f24b 828#if !defined(DOSISH) && !defined(AMIGAOS)
edc7bc49 829# ifndef VMS /* Don't delete; use automatic file versioning */
3280af22 830 if (UNLINK(PL_oldname) < 0) {
0453d815 831 if (ckWARN_d(WARN_INPLACE))
9014280d 832 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
0453d815
PM
833 "Can't remove %s: %s, skipping file",
834 PL_oldname, Strerror(errno) );
79072805 835 do_close(gv,FALSE);
fe14fcc3
LW
836 continue;
837 }
edc7bc49 838# endif
ff8e2863 839#else
cea2e8a9 840 Perl_croak(aTHX_ "Can't do inplace edit without backup");
ff8e2863 841#endif
a687059c
LW
842 }
843
3280af22
NIS
844 sv_setpvn(sv,">",!PL_inplace);
845 sv_catpvn(sv,PL_oldname,oldlen);
748a9306 846 SETERRNO(0,0); /* in case sprintf set errno */
4119ab01
HM
847#ifdef VMS
848 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
18708f5a 849 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
4119ab01 850#else
3280af22 851 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
18708f5a 852 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
4119ab01 853#endif
18708f5a 854 {
0453d815 855 if (ckWARN_d(WARN_INPLACE))
9014280d 856 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: %s",
0453d815 857 PL_oldname, Strerror(errno) );
79072805 858 do_close(gv,FALSE);
fe14fcc3
LW
859 continue;
860 }
3280af22
NIS
861 setdefout(PL_argvoutgv);
862 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
863 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
fe14fcc3 864#ifdef HAS_FCHMOD
3280af22 865 (void)fchmod(PL_lastfd,PL_filemode);
a687059c 866#else
3e3baf6d
TB
867# if !(defined(WIN32) && defined(__BORLANDC__))
868 /* Borland runtime creates a readonly file! */
b28d0864 869 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
3e3baf6d 870# endif
a687059c 871#endif
3280af22 872 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
fe14fcc3 873#ifdef HAS_FCHOWN
3280af22 874 (void)fchown(PL_lastfd,fileuid,filegid);
a687059c 875#else
fe14fcc3 876#ifdef HAS_CHOWN
b28d0864 877 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
a687059c 878#endif
b1248f16 879#endif
fe14fcc3 880 }
a687059c 881 }
a0d0e21e 882 return IoIFP(GvIOp(gv));
a687059c 883 }
4d61ec05 884 else {
4d61ec05 885 if (ckWARN_d(WARN_INPLACE)) {
6af84f9f
GS
886 int eno = errno;
887 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
888 && !S_ISREG(PL_statbuf.st_mode))
889 {
9014280d 890 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
4d61ec05 891 "Can't do inplace edit: %s is not a regular file",
9a7dcd9c 892 PL_oldname);
6af84f9f 893 }
4d61ec05 894 else
9014280d 895 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s",
6af84f9f 896 PL_oldname, Strerror(eno));
4d61ec05
GS
897 }
898 }
a687059c 899 }
18708f5a
GS
900 if (io && (IoFLAGS(io) & IOf_ARGV))
901 IoFLAGS(io) |= IOf_START;
3280af22
NIS
902 if (PL_inplace) {
903 (void)do_close(PL_argvoutgv,FALSE);
7a1c5554
GS
904 if (io && (IoFLAGS(io) & IOf_ARGV)
905 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
906 {
18708f5a
GS
907 GV *oldout = (GV*)av_pop(PL_argvout_stack);
908 setdefout(oldout);
909 SvREFCNT_dec(oldout);
910 return Nullfp;
911 }
4633a7c4 912 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
a687059c
LW
913 }
914 return Nullfp;
915}
916
fe14fcc3 917#ifdef HAS_PIPE
afd9f252 918void
864dbfa3 919Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
afd9f252 920{
79072805
LW
921 register IO *rstio;
922 register IO *wstio;
afd9f252
LW
923 int fd[2];
924
79072805 925 if (!rgv)
afd9f252 926 goto badexit;
79072805 927 if (!wgv)
afd9f252
LW
928 goto badexit;
929
a0d0e21e
LW
930 rstio = GvIOn(rgv);
931 wstio = GvIOn(wgv);
afd9f252 932
a0d0e21e 933 if (IoIFP(rstio))
79072805 934 do_close(rgv,FALSE);
a0d0e21e 935 if (IoIFP(wstio))
79072805 936 do_close(wgv,FALSE);
afd9f252 937
3028581b 938 if (PerlProc_pipe(fd) < 0)
afd9f252 939 goto badexit;
460c8493
IZ
940 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
941 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 942 IoOFP(rstio) = IoIFP(rstio);
8990e307 943 IoIFP(wstio) = IoOFP(wstio);
50952442
JH
944 IoTYPE(rstio) = IoTYPE_RDONLY;
945 IoTYPE(wstio) = IoTYPE_WRONLY;
8990e307 946 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 947 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
3028581b 948 else PerlLIO_close(fd[0]);
760ac839 949 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
3028581b 950 else PerlLIO_close(fd[1]);
fe14fcc3
LW
951 goto badexit;
952 }
afd9f252 953
3280af22 954 sv_setsv(sv,&PL_sv_yes);
afd9f252
LW
955 return;
956
957badexit:
3280af22 958 sv_setsv(sv,&PL_sv_undef);
afd9f252
LW
959 return;
960}
b1248f16 961#endif
afd9f252 962
517844ec 963/* explicit renamed to avoid C++ conflict -- kja */
a687059c 964bool
864dbfa3 965Perl_do_close(pTHX_ GV *gv, bool not_implicit)
a687059c 966{
1193dd27
IZ
967 bool retval;
968 IO *io;
a687059c 969
79072805 970 if (!gv)
3280af22 971 gv = PL_argvgv;
a0d0e21e 972 if (!gv || SvTYPE(gv) != SVt_PVGV) {
1d2dff63 973 if (not_implicit)
93189314 974 SETERRNO(EBADF,SS_IVCHAN);
c2ab57d4 975 return FALSE;
99b89507 976 }
79072805
LW
977 io = GvIO(gv);
978 if (!io) { /* never opened */
1d2dff63 979 if (not_implicit) {
2dd78f96
JH
980 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
981 report_evil_fh(gv, io, PL_op->op_type);
93189314 982 SETERRNO(EBADF,SS_IVCHAN);
1d2dff63 983 }
a687059c
LW
984 return FALSE;
985 }
f2b5be74 986 retval = io_close(io, not_implicit);
517844ec 987 if (not_implicit) {
1193dd27
IZ
988 IoLINES(io) = 0;
989 IoPAGE(io) = 0;
990 IoLINES_LEFT(io) = IoPAGE_LEN(io);
991 }
50952442 992 IoTYPE(io) = IoTYPE_CLOSED;
1193dd27
IZ
993 return retval;
994}
995
996bool
f2b5be74 997Perl_io_close(pTHX_ IO *io, bool not_implicit)
1193dd27
IZ
998{
999 bool retval = FALSE;
1000 int status;
1001
8990e307 1002 if (IoIFP(io)) {
50952442 1003 if (IoTYPE(io) == IoTYPE_PIPE) {
3028581b 1004 status = PerlProc_pclose(IoIFP(io));
f2b5be74
GS
1005 if (not_implicit) {
1006 STATUS_NATIVE_SET(status);
1007 retval = (STATUS_POSIX == 0);
1008 }
1009 else {
1010 retval = (status != -1);
1011 }
a687059c 1012 }
50952442 1013 else if (IoTYPE(io) == IoTYPE_STD)
a687059c
LW
1014 retval = TRUE;
1015 else {
8990e307 1016 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
760ac839
LW
1017 retval = (PerlIO_close(IoOFP(io)) != EOF);
1018 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
c2ab57d4
LW
1019 }
1020 else
760ac839 1021 retval = (PerlIO_close(IoIFP(io)) != EOF);
a687059c 1022 }
8990e307 1023 IoOFP(io) = IoIFP(io) = Nullfp;
79072805 1024 }
f2b5be74 1025 else if (not_implicit) {
93189314 1026 SETERRNO(EBADF,SS_IVCHAN);
20408e3c 1027 }
1193dd27 1028
a687059c
LW
1029 return retval;
1030}
1031
1032bool
864dbfa3 1033Perl_do_eof(pTHX_ GV *gv)
a687059c 1034{
79072805 1035 register IO *io;
a687059c
LW
1036 int ch;
1037
79072805 1038 io = GvIO(gv);
a687059c 1039
79072805 1040 if (!io)
a687059c 1041 return TRUE;
a00b5bd3 1042 else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
06bcfee8 1043 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
a687059c 1044
8990e307 1045 while (IoIFP(io)) {
505fdf5d 1046 int saverrno;
a687059c 1047
760ac839 1048 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
a20bf0c3 1049 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
760ac839
LW
1050 return FALSE; /* this is the most usual case */
1051 }
a687059c 1052
505fdf5d 1053 saverrno = errno; /* getc and ungetc can stomp on errno */
760ac839 1054 ch = PerlIO_getc(IoIFP(io));
a687059c 1055 if (ch != EOF) {
760ac839 1056 (void)PerlIO_ungetc(IoIFP(io),ch);
505fdf5d 1057 errno = saverrno;
a687059c
LW
1058 return FALSE;
1059 }
505fdf5d 1060 errno = saverrno;
fab3f3a7 1061
760ac839 1062 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
a20bf0c3
JH
1063 if (PerlIO_get_cnt(IoIFP(io)) < -1)
1064 PerlIO_set_cnt(IoIFP(io),-1);
760ac839 1065 }
533c011a 1066 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
ed2c6b9b 1067 if (gv != PL_argvgv || !nextargv(gv)) /* get another fp handy */
a687059c
LW
1068 return TRUE;
1069 }
1070 else
1071 return TRUE; /* normal fp, definitely end of file */
1072 }
1073 return TRUE;
1074}
1075
5ff3f7a4 1076Off_t
864dbfa3 1077Perl_do_tell(pTHX_ GV *gv)
a687059c 1078{
9c5ffd7c 1079 register IO *io = 0;
96e4d5b1 1080 register PerlIO *fp;
a687059c 1081
96e4d5b1 1082 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
bee1dbe2 1083#ifdef ULTRIX_STDIO_BOTCH
96e4d5b1 1084 if (PerlIO_eof(fp))
1085 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
bee1dbe2 1086#endif
8903cb82 1087 return PerlIO_tell(fp);
96e4d5b1 1088 }
411caa50
JH
1089 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1090 report_evil_fh(gv, io, PL_op->op_type);
93189314 1091 SETERRNO(EBADF,RMS_IFI);
5ff3f7a4 1092 return (Off_t)-1;
a687059c
LW
1093}
1094
1095bool
864dbfa3 1096Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
a687059c 1097{
9c5ffd7c 1098 register IO *io = 0;
137443ea 1099 register PerlIO *fp;
a687059c 1100
137443ea 1101 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
bee1dbe2 1102#ifdef ULTRIX_STDIO_BOTCH
137443ea 1103 if (PerlIO_eof(fp))
1104 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
bee1dbe2 1105#endif
8903cb82 1106 return PerlIO_seek(fp, pos, whence) >= 0;
137443ea 1107 }
411caa50
JH
1108 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1109 report_evil_fh(gv, io, PL_op->op_type);
93189314 1110 SETERRNO(EBADF,RMS_IFI);
a687059c
LW
1111 return FALSE;
1112}
1113
97cc44eb 1114Off_t
864dbfa3 1115Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
8903cb82 1116{
9c5ffd7c 1117 register IO *io = 0;
8903cb82 1118 register PerlIO *fp;
1119
1120 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
3028581b 1121 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
411caa50
JH
1122 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1123 report_evil_fh(gv, io, PL_op->op_type);
93189314 1124 SETERRNO(EBADF,RMS_IFI);
d9b3e12d 1125 return (Off_t)-1;
8903cb82 1126}
1127
6ff81951 1128int
16fe6d59
GS
1129Perl_mode_from_discipline(pTHX_ SV *discp)
1130{
1131 int mode = O_BINARY;
1132 if (discp) {
1133 STRLEN len;
1134 char *s = SvPV(discp,len);
1135 while (*s) {
1136 if (*s == ':') {
1137 switch (s[1]) {
1138 case 'r':
1139 if (len > 3 && strnEQ(s+1, "raw", 3)
1140 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1141 {
1142 mode = O_BINARY;
1143 s += 4;
1144 len -= 4;
1145 break;
1146 }
1147 /* FALL THROUGH */
1148 case 'c':
1149 if (len > 4 && strnEQ(s+1, "crlf", 4)
1150 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1151 {
1152 mode = O_TEXT;
1153 s += 5;
1154 len -= 5;
1155 break;
1156 }
1157 /* FALL THROUGH */
1158 default:
1159 goto fail_discipline;
1160 }
1161 }
1162 else if (isSPACE(*s)) {
1163 ++s;
1164 --len;
1165 }
1166 else {
1167 char *end;
1168fail_discipline:
1169 end = strchr(s+1, ':');
1170 if (!end)
1171 end = s+len;
60382766 1172#ifndef PERLIO_LAYERS
363c40c4 1173 Perl_croak(aTHX_ "IO layers (like '%.*s') unavailable", end-s, s);
60382766 1174#else
18a33fb5 1175 len -= end-s;
60382766
NIS
1176 s = end;
1177#endif
16fe6d59
GS
1178 }
1179 }
1180 }
1181 return mode;
1182}
1183
1184int
1185Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
6ff81951 1186{
60382766
NIS
1187 /* The old body of this is now in non-LAYER part of perlio.c
1188 * This is a stub for any XS code which might have been calling it.
1189 */
6ce75a77 1190 char *name = ":raw";
35990314 1191#ifdef PERLIO_USING_CRLF
8b24e160 1192 if (!(mode & O_BINARY))
6ce75a77
JH
1193 name = ":crlf";
1194#endif
60382766 1195 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
6ff81951
GS
1196}
1197
a0d0e21e 1198#if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
c2ab57d4 1199 /* code courtesy of William Kucharski */
fe14fcc3 1200#define HAS_CHSIZE
6eb13c3b 1201
517844ec 1202I32 my_chsize(fd, length)
79072805 1203I32 fd; /* file descriptor */
85e6fe83 1204Off_t length; /* length to set file to */
6eb13c3b 1205{
6eb13c3b 1206 struct flock fl;
c623ac67 1207 Stat_t filebuf;
6eb13c3b 1208
3028581b 1209 if (PerlLIO_fstat(fd, &filebuf) < 0)
6eb13c3b
LW
1210 return -1;
1211
1212 if (filebuf.st_size < length) {
1213
1214 /* extend file length */
1215
3028581b 1216 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
6eb13c3b
LW
1217 return -1;
1218
1219 /* write a "0" byte */
1220
3028581b 1221 if ((PerlLIO_write(fd, "", 1)) != 1)
6eb13c3b
LW
1222 return -1;
1223 }
1224 else {
1225 /* truncate length */
1226
1227 fl.l_whence = 0;
1228 fl.l_len = 0;
1229 fl.l_start = length;
a0d0e21e 1230 fl.l_type = F_WRLCK; /* write lock on file space */
6eb13c3b
LW
1231
1232 /*
a0d0e21e 1233 * This relies on the UNDOCUMENTED F_FREESP argument to
6eb13c3b
LW
1234 * fcntl(2), which truncates the file so that it ends at the
1235 * position indicated by fl.l_start.
1236 *
1237 * Will minor miracles never cease?
1238 */
1239
a0d0e21e 1240 if (fcntl(fd, F_FREESP, &fl) < 0)
6eb13c3b
LW
1241 return -1;
1242
1243 }
1244
1245 return 0;
1246}
a0d0e21e 1247#endif /* F_FREESP */
ff8e2863 1248
a687059c 1249bool
864dbfa3 1250Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
a687059c
LW
1251{
1252 register char *tmps;
463ee0b2 1253 STRLEN len;
a687059c 1254
79072805
LW
1255 /* assuming fp is checked earlier */
1256 if (!sv)
1257 return TRUE;
3280af22 1258 if (PL_ofmt) {
8990e307 1259 if (SvGMAGICAL(sv))
79072805 1260 mg_get(sv);
463ee0b2 1261 if (SvIOK(sv) && SvIVX(sv) != 0) {
65202027 1262 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
760ac839 1263 return !PerlIO_error(fp);
79072805 1264 }
463ee0b2 1265 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
79072805 1266 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
3280af22 1267 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
760ac839 1268 return !PerlIO_error(fp);
79072805 1269 }
a687059c 1270 }
79072805
LW
1271 switch (SvTYPE(sv)) {
1272 case SVt_NULL:
411caa50 1273 if (ckWARN(WARN_UNINITIALIZED))
29489e7c 1274 report_uninit(sv);
ff8e2863 1275 return TRUE;
79072805 1276 case SVt_IV:
a0d0e21e
LW
1277 if (SvIOK(sv)) {
1278 if (SvGMAGICAL(sv))
1279 mg_get(sv);
cf2093f6 1280 if (SvIsUV(sv))
57def98f 1281 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
cf2093f6 1282 else
57def98f 1283 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
760ac839 1284 return !PerlIO_error(fp);
a0d0e21e
LW
1285 }
1286 /* FALL THROUGH */
79072805 1287 default:
7d59b7e4 1288 if (PerlIO_isutf8(fp)) {
f9a63242 1289 if (!SvUTF8(sv))
88632417
JH
1290 sv_utf8_upgrade_flags(sv = sv_mortalcopy(sv),
1291 SV_GMAGIC|SV_UTF8_NO_ENCODING);
7d59b7e4 1292 }
ae798467 1293 else if (DO_UTF8(sv)) {
2da16753 1294 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)
62961d2e 1295 && ckWARN_d(WARN_UTF8))
2da16753 1296 {
9014280d 1297 Perl_warner(aTHX_ packWARN(WARN_UTF8), "Wide character in print");
ae798467
NIS
1298 }
1299 }
f9a63242 1300 tmps = SvPV(sv, len);
79072805 1301 break;
ff8e2863 1302 }
94e4c244
JH
1303 /* To detect whether the process is about to overstep its
1304 * filesize limit we would need getrlimit(). We could then
1305 * also transparently raise the limit with setrlimit() --
1306 * but only until the system hard limit/the filesystem limit,
c5dd3cdd
JH
1307 * at which we would get EPERM. Note that when using buffered
1308 * io the write failure can be delayed until the flush/close. --jhi */
a21ac455 1309 if (len && (PerlIO_write(fp,tmps,len) == 0))
a687059c 1310 return FALSE;
760ac839 1311 return !PerlIO_error(fp);
a687059c
LW
1312}
1313
79072805 1314I32
cea2e8a9 1315Perl_my_stat(pTHX)
a687059c 1316{
39644a26 1317 dSP;
79072805 1318 IO *io;
2dd78f96 1319 GV* gv;
79072805 1320
533c011a 1321 if (PL_op->op_flags & OPf_REF) {
924508f0 1322 EXTEND(SP,1);
2dd78f96 1323 gv = cGVOP_gv;
748a9306 1324 do_fstat:
2dd78f96 1325 io = GvIO(gv);
8990e307 1326 if (io && IoIFP(io)) {
2dd78f96 1327 PL_statgv = gv;
3280af22
NIS
1328 sv_setpv(PL_statname,"");
1329 PL_laststype = OP_STAT;
1330 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
a687059c
LW
1331 }
1332 else {
2dd78f96 1333 if (gv == PL_defgv)
3280af22 1334 return PL_laststatval;
2dd78f96
JH
1335 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1336 report_evil_fh(gv, io, PL_op->op_type);
3280af22
NIS
1337 PL_statgv = Nullgv;
1338 sv_setpv(PL_statname,"");
1339 return (PL_laststatval = -1);
a687059c
LW
1340 }
1341 }
fbb0b3b3
RGS
1342 else if (PL_op->op_private & OPpFT_STACKED) {
1343 return PL_laststatval;
1344 }
a687059c 1345 else {
748a9306 1346 SV* sv = POPs;
4b74e3fb 1347 char *s;
4ecd490c 1348 STRLEN len;
79072805 1349 PUTBACK;
748a9306 1350 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 1351 gv = (GV*)sv;
748a9306
LW
1352 goto do_fstat;
1353 }
1354 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 1355 gv = (GV*)SvRV(sv);
748a9306
LW
1356 goto do_fstat;
1357 }
1358
4ecd490c 1359 s = SvPV(sv, len);
3280af22 1360 PL_statgv = Nullgv;
4ecd490c
JH
1361 sv_setpvn(PL_statname, s, len);
1362 s = SvPVX(PL_statname); /* s now NUL-terminated */
3280af22
NIS
1363 PL_laststype = OP_STAT;
1364 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
599cee73 1365 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
9014280d 1366 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
3280af22 1367 return PL_laststatval;
a687059c
LW
1368 }
1369}
1370
fbb0b3b3
RGS
1371static char no_prev_lstat[] = "The stat preceding -l _ wasn't an lstat";
1372
79072805 1373I32
cea2e8a9 1374Perl_my_lstat(pTHX)
c623bd54 1375{
39644a26 1376 dSP;
79072805 1377 SV *sv;
2d8e6c8d 1378 STRLEN n_a;
533c011a 1379 if (PL_op->op_flags & OPf_REF) {
924508f0 1380 EXTEND(SP,1);
638eceb6 1381 if (cGVOP_gv == PL_defgv) {
3280af22 1382 if (PL_laststype != OP_LSTAT)
fbb0b3b3 1383 Perl_croak(aTHX_ no_prev_lstat);
3280af22 1384 return PL_laststatval;
fe14fcc3 1385 }
5d3e98de 1386 if (ckWARN(WARN_IO)) {
9014280d 1387 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
5d3e98de
RGS
1388 GvENAME(cGVOP_gv));
1389 return (PL_laststatval = -1);
1390 }
fe14fcc3 1391 }
fbb0b3b3
RGS
1392 else if (ckWARN(WARN_IO) && PL_laststype != OP_LSTAT
1393 && (PL_op->op_private & OPpFT_STACKED))
1394 Perl_croak(aTHX_ no_prev_lstat);
c623bd54 1395
3280af22
NIS
1396 PL_laststype = OP_LSTAT;
1397 PL_statgv = Nullgv;
79072805
LW
1398 sv = POPs;
1399 PUTBACK;
5d3e98de 1400 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV && ckWARN(WARN_IO)) {
9014280d 1401 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
5d3e98de
RGS
1402 GvENAME((GV*) SvRV(sv)));
1403 return (PL_laststatval = -1);
1404 }
2d8e6c8d 1405 sv_setpv(PL_statname,SvPV(sv, n_a));
2d8e6c8d 1406 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
2d8e6c8d 1407 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
9014280d 1408 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat");
3280af22 1409 return PL_laststatval;
c623bd54
LW
1410}
1411
622913ab 1412#ifndef OS2
a687059c 1413bool
864dbfa3 1414Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
a687059c 1415{
d5a9bfb0
IZ
1416 return do_aexec5(really, mark, sp, 0, 0);
1417}
622913ab 1418#endif
d5a9bfb0
IZ
1419
1420bool
2aa1486d
GS
1421Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1422 int fd, int do_report)
d5a9bfb0 1423{
cd39f2b6
JH
1424#ifdef MACOS_TRADITIONAL
1425 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1426#else
a687059c 1427 register char **a;
9c5ffd7c 1428 char *tmps = Nullch;
2d8e6c8d 1429 STRLEN n_a;
a687059c 1430
79072805 1431 if (sp > mark) {
3280af22
NIS
1432 New(401,PL_Argv, sp - mark + 1, char*);
1433 a = PL_Argv;
79072805
LW
1434 while (++mark <= sp) {
1435 if (*mark)
2d8e6c8d 1436 *a++ = SvPVx(*mark, n_a);
a687059c
LW
1437 else
1438 *a++ = "";
1439 }
1440 *a = Nullch;
91b2752f
RG
1441 if (really)
1442 tmps = SvPV(really, n_a);
1443 if ((!really && *PL_Argv[0] != '/') ||
1444 (really && *tmps != '/')) /* will execvp use PATH? */
79072805 1445 TAINT_ENV(); /* testing IFS here is overkill, probably */
b35112e7 1446 PERL_FPU_PRE_EXEC
91b2752f 1447 if (really && *tmps)
b4748376 1448 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
a687059c 1449 else
b4748376 1450 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
b35112e7 1451 PERL_FPU_POST_EXEC
599cee73 1452 if (ckWARN(WARN_EXEC))
9014280d 1453 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
91b2752f 1454 (really ? tmps : PL_Argv[0]), Strerror(errno));
d5a9bfb0
IZ
1455 if (do_report) {
1456 int e = errno;
1457
1458 PerlLIO_write(fd, (void*)&e, sizeof(int));
1459 PerlLIO_close(fd);
1460 }
a687059c 1461 }
bee1dbe2 1462 do_execfree();
cd39f2b6 1463#endif
a687059c
LW
1464 return FALSE;
1465}
1466
fe14fcc3 1467void
864dbfa3 1468Perl_do_execfree(pTHX)
ff8e2863 1469{
3280af22
NIS
1470 if (PL_Argv) {
1471 Safefree(PL_Argv);
1472 PL_Argv = Null(char **);
ff8e2863 1473 }
3280af22
NIS
1474 if (PL_Cmd) {
1475 Safefree(PL_Cmd);
1476 PL_Cmd = Nullch;
ff8e2863
LW
1477 }
1478}
1479
cd39f2b6 1480#if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 1481
a687059c 1482bool
864dbfa3 1483Perl_do_exec(pTHX_ char *cmd)
a687059c 1484{
e446cec8
IZ
1485 return do_exec3(cmd,0,0);
1486}
1487
1488bool
864dbfa3 1489Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
e446cec8 1490{
a687059c
LW
1491 register char **a;
1492 register char *s;
a687059c 1493
748a9306
LW
1494 while (*cmd && isSPACE(*cmd))
1495 cmd++;
1496
a687059c
LW
1497 /* save an extra exec if possible */
1498
bf38876a 1499#ifdef CSH
d05c1ba0
JH
1500 {
1501 char flags[10];
1502 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1503 strnEQ(cmd+PL_cshlen," -c",3)) {
1504 strcpy(flags,"-c");
1505 s = cmd+PL_cshlen+3;
1506 if (*s == 'f') {
1507 s++;
1508 strcat(flags,"f");
1509 }
1510 if (*s == ' ')
1511 s++;
1512 if (*s++ == '\'') {
1513 char *ncmd = s;
1514
1515 while (*s)
1516 s++;
1517 if (s[-1] == '\n')
1518 *--s = '\0';
1519 if (s[-1] == '\'') {
1520 *--s = '\0';
b35112e7 1521 PERL_FPU_PRE_EXEC
d05c1ba0 1522 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
b35112e7 1523 PERL_FPU_POST_EXEC
d05c1ba0
JH
1524 *s = '\'';
1525 return FALSE;
1526 }
1527 }
a687059c
LW
1528 }
1529 }
bf38876a 1530#endif /* CSH */
a687059c
LW
1531
1532 /* see if there are shell metacharacters in it */
1533
748a9306
LW
1534 if (*cmd == '.' && isSPACE(cmd[1]))
1535 goto doshell;
1536
1537 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1538 goto doshell;
1539
c170e444 1540 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
63f2c1e1
LW
1541 if (*s == '=')
1542 goto doshell;
748a9306 1543
a687059c 1544 for (s = cmd; *s; s++) {
d05c1ba0
JH
1545 if (*s != ' ' && !isALPHA(*s) &&
1546 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
a687059c
LW
1547 if (*s == '\n' && !s[1]) {
1548 *s = '\0';
1549 break;
1550 }
603a98b0
IZ
1551 /* handle the 2>&1 construct at the end */
1552 if (*s == '>' && s[1] == '&' && s[2] == '1'
1553 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1554 && (!s[3] || isSPACE(s[3])))
1555 {
1556 char *t = s + 3;
1557
1558 while (*t && isSPACE(*t))
1559 ++t;
943bbd07 1560 if (!*t && (PerlLIO_dup2(1,2) != -1)) {
603a98b0
IZ
1561 s[-2] = '\0';
1562 break;
1563 }
1564 }
a687059c 1565 doshell:
b35112e7 1566 PERL_FPU_PRE_EXEC
3280af22 1567 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
b35112e7 1568 PERL_FPU_POST_EXEC
a687059c
LW
1569 return FALSE;
1570 }
1571 }
748a9306 1572
3280af22
NIS
1573 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1574 PL_Cmd = savepvn(cmd, s-cmd);
1575 a = PL_Argv;
1576 for (s = PL_Cmd; *s;) {
99b89507 1577 while (*s && isSPACE(*s)) s++;
a687059c
LW
1578 if (*s)
1579 *(a++) = s;
99b89507 1580 while (*s && !isSPACE(*s)) s++;
a687059c
LW
1581 if (*s)
1582 *s++ = '\0';
1583 }
1584 *a = Nullch;
3280af22 1585 if (PL_Argv[0]) {
b35112e7 1586 PERL_FPU_PRE_EXEC
3280af22 1587 PerlProc_execvp(PL_Argv[0],PL_Argv);
b35112e7 1588 PERL_FPU_POST_EXEC
b1248f16 1589 if (errno == ENOEXEC) { /* for system V NIH syndrome */
ff8e2863 1590 do_execfree();
a687059c 1591 goto doshell;
b1248f16 1592 }
d008e5eb 1593 {
e446cec8
IZ
1594 int e = errno;
1595
d008e5eb 1596 if (ckWARN(WARN_EXEC))
9014280d 1597 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
d008e5eb 1598 PL_Argv[0], Strerror(errno));
e446cec8
IZ
1599 if (do_report) {
1600 PerlLIO_write(fd, (void*)&e, sizeof(int));
1601 PerlLIO_close(fd);
1602 }
d008e5eb 1603 }
a687059c 1604 }
ff8e2863 1605 do_execfree();
a687059c
LW
1606 return FALSE;
1607}
1608
6890e559 1609#endif /* OS2 || WIN32 */
760ac839 1610
79072805 1611I32
864dbfa3 1612Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
a687059c 1613{
79072805
LW
1614 register I32 val;
1615 register I32 val2;
1616 register I32 tot = 0;
20408e3c 1617 char *what;
a687059c 1618 char *s;
79072805 1619 SV **oldmark = mark;
2d8e6c8d 1620 STRLEN n_a;
a687059c 1621
20408e3c 1622#define APPLY_TAINT_PROPER() \
3280af22 1623 STMT_START { \
17406bd6 1624 if (PL_tainted) { TAINT_PROPER(what); } \
873ef191 1625 } STMT_END
20408e3c
GS
1626
1627 /* This is a first heuristic; it doesn't catch tainting magic. */
3280af22 1628 if (PL_tainting) {
463ee0b2 1629 while (++mark <= sp) {
bbce6d69 1630 if (SvTAINTED(*mark)) {
1631 TAINT;
1632 break;
1633 }
463ee0b2
LW
1634 }
1635 mark = oldmark;
1636 }
a687059c 1637 switch (type) {
79072805 1638 case OP_CHMOD:
20408e3c
GS
1639 what = "chmod";
1640 APPLY_TAINT_PROPER();
79072805 1641 if (++mark <= sp) {
463ee0b2 1642 val = SvIVx(*mark);
20408e3c
GS
1643 APPLY_TAINT_PROPER();
1644 tot = sp - mark;
79072805 1645 while (++mark <= sp) {
2d8e6c8d 1646 char *name = SvPVx(*mark, n_a);
20408e3c
GS
1647 APPLY_TAINT_PROPER();
1648 if (PerlLIO_chmod(name, val))
a687059c
LW
1649 tot--;
1650 }
1651 }
1652 break;
fe14fcc3 1653#ifdef HAS_CHOWN
79072805 1654 case OP_CHOWN:
20408e3c
GS
1655 what = "chown";
1656 APPLY_TAINT_PROPER();
79072805 1657 if (sp - mark > 2) {
463ee0b2
LW
1658 val = SvIVx(*++mark);
1659 val2 = SvIVx(*++mark);
20408e3c 1660 APPLY_TAINT_PROPER();
a0d0e21e 1661 tot = sp - mark;
79072805 1662 while (++mark <= sp) {
2d8e6c8d 1663 char *name = SvPVx(*mark, n_a);
20408e3c 1664 APPLY_TAINT_PROPER();
36660982 1665 if (PerlLIO_chown(name, val, val2))
a687059c
LW
1666 tot--;
1667 }
1668 }
1669 break;
b1248f16 1670#endif
a1d180c4 1671/*
dd64f1c3
AD
1672XXX Should we make lchown() directly available from perl?
1673For now, we'll let Configure test for HAS_LCHOWN, but do
1674nothing in the core.
1675 --AD 5/1998
1676*/
fe14fcc3 1677#ifdef HAS_KILL
79072805 1678 case OP_KILL:
20408e3c
GS
1679 what = "kill";
1680 APPLY_TAINT_PROPER();
55497cff 1681 if (mark == sp)
1682 break;
2d8e6c8d 1683 s = SvPVx(*++mark, n_a);
e02bfb16 1684 if (isALPHA(*s)) {
79072805
LW
1685 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1686 s += 3;
e02bfb16 1687 if ((val = whichsig(s)) < 0)
cea2e8a9 1688 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
79072805
LW
1689 }
1690 else
463ee0b2 1691 val = SvIVx(*mark);
20408e3c
GS
1692 APPLY_TAINT_PROPER();
1693 tot = sp - mark;
3595fcef 1694#ifdef VMS
1695 /* kill() doesn't do process groups (job trees?) under VMS */
1696 if (val < 0) val = -val;
1697 if (val == SIGKILL) {
1698# include <starlet.h>
1699 /* Use native sys$delprc() to insure that target process is
1700 * deleted; supervisor-mode images don't pay attention to
1701 * CRTL's emulation of Unix-style signals and kill()
1702 */
1703 while (++mark <= sp) {
1704 I32 proc = SvIVx(*mark);
1705 register unsigned long int __vmssts;
20408e3c 1706 APPLY_TAINT_PROPER();
3595fcef 1707 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1708 tot--;
1709 switch (__vmssts) {
1710 case SS$_NONEXPR:
1711 case SS$_NOSUCHNODE:
1712 SETERRNO(ESRCH,__vmssts);
1713 break;
1714 case SS$_NOPRIV:
1715 SETERRNO(EPERM,__vmssts);
1716 break;
1717 default:
1718 SETERRNO(EVMSERR,__vmssts);
1719 }
1720 }
1721 }
1722 break;
1723 }
1724#endif
79072805
LW
1725 if (val < 0) {
1726 val = -val;
1727 while (++mark <= sp) {
463ee0b2 1728 I32 proc = SvIVx(*mark);
20408e3c 1729 APPLY_TAINT_PROPER();
fe14fcc3 1730#ifdef HAS_KILLPG
3028581b 1731 if (PerlProc_killpg(proc,val)) /* BSD */
a687059c 1732#else
3028581b 1733 if (PerlProc_kill(-proc,val)) /* SYSV */
a687059c 1734#endif
79072805 1735 tot--;
a687059c 1736 }
79072805
LW
1737 }
1738 else {
1739 while (++mark <= sp) {
20408e3c
GS
1740 I32 proc = SvIVx(*mark);
1741 APPLY_TAINT_PROPER();
1742 if (PerlProc_kill(proc, val))
79072805 1743 tot--;
a687059c
LW
1744 }
1745 }
1746 break;
b1248f16 1747#endif
79072805 1748 case OP_UNLINK:
20408e3c
GS
1749 what = "unlink";
1750 APPLY_TAINT_PROPER();
79072805
LW
1751 tot = sp - mark;
1752 while (++mark <= sp) {
2d8e6c8d 1753 s = SvPVx(*mark, n_a);
20408e3c 1754 APPLY_TAINT_PROPER();
3280af22 1755 if (PL_euid || PL_unsafe) {
a687059c
LW
1756 if (UNLINK(s))
1757 tot--;
1758 }
1759 else { /* don't let root wipe out directories without -U */
3280af22 1760 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
a687059c
LW
1761 tot--;
1762 else {
1763 if (UNLINK(s))
1764 tot--;
1765 }
1766 }
1767 }
1768 break;
a0d0e21e 1769#ifdef HAS_UTIME
79072805 1770 case OP_UTIME:
20408e3c
GS
1771 what = "utime";
1772 APPLY_TAINT_PROPER();
79072805 1773 if (sp - mark > 2) {
748a9306 1774#if defined(I_UTIME) || defined(VMS)
663a0e37
LW
1775 struct utimbuf utbuf;
1776#else
a687059c 1777 struct {
dd2821f6
GS
1778 Time_t actime;
1779 Time_t modtime;
a687059c 1780 } utbuf;
663a0e37 1781#endif
a687059c 1782
c6f7b413
RS
1783 SV* accessed = *++mark;
1784 SV* modified = *++mark;
1785 void * utbufp = &utbuf;
1786
6ec06612
SB
1787 /* Be like C, and if both times are undefined, let the C
1788 * library figure out what to do. This usually means
1789 * "current time". */
c6f7b413
RS
1790
1791 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
6ec06612
SB
1792 utbufp = NULL;
1793 else {
1794 Zero(&utbuf, sizeof utbuf, char);
517844ec 1795#ifdef BIG_TIME
6ec06612
SB
1796 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1797 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
517844ec 1798#else
6ec06612
SB
1799 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1800 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
517844ec 1801#endif
6ec06612
SB
1802 }
1803 APPLY_TAINT_PROPER();
79072805
LW
1804 tot = sp - mark;
1805 while (++mark <= sp) {
2d8e6c8d 1806 char *name = SvPVx(*mark, n_a);
20408e3c 1807 APPLY_TAINT_PROPER();
c6f7b413 1808 if (PerlLIO_utime(name, utbufp))
a687059c
LW
1809 tot--;
1810 }
a687059c
LW
1811 }
1812 else
79072805 1813 tot = 0;
a687059c 1814 break;
a0d0e21e 1815#endif
a687059c
LW
1816 }
1817 return tot;
20408e3c 1818
20408e3c 1819#undef APPLY_TAINT_PROPER
a687059c
LW
1820}
1821
1822/* Do the permissions allow some operation? Assumes statcache already set. */
a0d0e21e 1823#ifndef VMS /* VMS' cando is in vms.c */
7f4774ae
JH
1824bool
1825Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1826/* Note: we use `effective' both for uids and gids.
1827 * Here we are betting on Uid_t being equal or wider than Gid_t. */
a687059c 1828{
bee1dbe2 1829#ifdef DOSISH
fe14fcc3
LW
1830 /* [Comments and code from Len Reed]
1831 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1832 * to write-protected files. The execute permission bit is set
1833 * by the Miscrosoft C library stat() function for the following:
1834 * .exe files
1835 * .com files
1836 * .bat files
1837 * directories
1838 * All files and directories are readable.
1839 * Directories and special files, e.g. "CON", cannot be
1840 * write-protected.
1841 * [Comment by Tom Dinger -- a directory can have the write-protect
1842 * bit set in the file system, but DOS permits changes to
1843 * the directory anyway. In addition, all bets are off
1844 * here for networked software, such as Novell and
1845 * Sun's PC-NFS.]
1846 */
1847
bee1dbe2
LW
1848 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1849 * too so it will actually look into the files for magic numbers
1850 */
7f4774ae 1851 return (mode & statbufp->st_mode) ? TRUE : FALSE;
fe14fcc3 1852
55497cff 1853#else /* ! DOSISH */
3280af22 1854 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
7f4774ae 1855 if (mode == S_IXUSR) {
c623bd54 1856 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
a687059c
LW
1857 return TRUE;
1858 }
1859 else
1860 return TRUE; /* root reads and writes anything */
1861 return FALSE;
1862 }
3280af22 1863 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
7f4774ae 1864 if (statbufp->st_mode & mode)
a687059c
LW
1865 return TRUE; /* ok as "user" */
1866 }
d8eceb89 1867 else if (ingroup(statbufp->st_gid,effective)) {
7f4774ae 1868 if (statbufp->st_mode & mode >> 3)
a687059c
LW
1869 return TRUE; /* ok as "group" */
1870 }
7f4774ae 1871 else if (statbufp->st_mode & mode >> 6)
a687059c
LW
1872 return TRUE; /* ok as "other" */
1873 return FALSE;
55497cff 1874#endif /* ! DOSISH */
a687059c 1875}
a0d0e21e 1876#endif /* ! VMS */
a687059c 1877
d8eceb89
JH
1878bool
1879Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
a687059c 1880{
cd39f2b6
JH
1881#ifdef MACOS_TRADITIONAL
1882 /* This is simply not correct for AppleShare, but fix it yerself. */
1883 return TRUE;
1884#else
3280af22 1885 if (testgid == (effective ? PL_egid : PL_gid))
a687059c 1886 return TRUE;
fe14fcc3 1887#ifdef HAS_GETGROUPS
a687059c
LW
1888#ifndef NGROUPS
1889#define NGROUPS 32
1890#endif
1891 {
a0d0e21e 1892 Groups_t gary[NGROUPS];
79072805 1893 I32 anum;
a687059c
LW
1894
1895 anum = getgroups(NGROUPS,gary);
1896 while (--anum >= 0)
1897 if (gary[anum] == testgid)
1898 return TRUE;
1899 }
1900#endif
1901 return FALSE;
cd39f2b6 1902#endif
a687059c 1903}
c2ab57d4 1904
fe14fcc3 1905#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
c2ab57d4 1906
79072805 1907I32
864dbfa3 1908Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
c2ab57d4 1909{
c2ab57d4 1910 key_t key;
79072805 1911 I32 n, flags;
c2ab57d4 1912
463ee0b2
LW
1913 key = (key_t)SvNVx(*++mark);
1914 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1915 flags = SvIVx(*++mark);
748a9306 1916 SETERRNO(0,0);
c2ab57d4
LW
1917 switch (optype)
1918 {
fe14fcc3 1919#ifdef HAS_MSG
79072805 1920 case OP_MSGGET:
c2ab57d4 1921 return msgget(key, flags);
e5d73d77 1922#endif
fe14fcc3 1923#ifdef HAS_SEM
79072805 1924 case OP_SEMGET:
c2ab57d4 1925 return semget(key, n, flags);
e5d73d77 1926#endif
fe14fcc3 1927#ifdef HAS_SHM
79072805 1928 case OP_SHMGET:
c2ab57d4 1929 return shmget(key, n, flags);
e5d73d77 1930#endif
fe14fcc3 1931#if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
e5d73d77 1932 default:
cea2e8a9 1933 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
e5d73d77 1934#endif
c2ab57d4
LW
1935 }
1936 return -1; /* should never happen */
1937}
1938
79072805 1939I32
864dbfa3 1940Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
c2ab57d4 1941{
79072805 1942 SV *astr;
c2ab57d4 1943 char *a;
a0d0e21e
LW
1944 I32 id, n, cmd, infosize, getinfo;
1945 I32 ret = -1;
c2ab57d4 1946
463ee0b2
LW
1947 id = SvIVx(*++mark);
1948 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1949 cmd = SvIVx(*++mark);
79072805 1950 astr = *++mark;
c2ab57d4
LW
1951 infosize = 0;
1952 getinfo = (cmd == IPC_STAT);
1953
1954 switch (optype)
1955 {
fe14fcc3 1956#ifdef HAS_MSG
79072805 1957 case OP_MSGCTL:
c2ab57d4
LW
1958 if (cmd == IPC_STAT || cmd == IPC_SET)
1959 infosize = sizeof(struct msqid_ds);
1960 break;
e5d73d77 1961#endif
fe14fcc3 1962#ifdef HAS_SHM
79072805 1963 case OP_SHMCTL:
c2ab57d4
LW
1964 if (cmd == IPC_STAT || cmd == IPC_SET)
1965 infosize = sizeof(struct shmid_ds);
1966 break;
e5d73d77 1967#endif
fe14fcc3 1968#ifdef HAS_SEM
79072805 1969 case OP_SEMCTL:
39398f3f 1970#ifdef Semctl
c2ab57d4
LW
1971 if (cmd == IPC_STAT || cmd == IPC_SET)
1972 infosize = sizeof(struct semid_ds);
1973 else if (cmd == GETALL || cmd == SETALL)
1974 {
8e591e46 1975 struct semid_ds semds;
bd89102f 1976 union semun semun;
e6f0bdd6
GS
1977#ifdef EXTRA_F_IN_SEMUN_BUF
1978 semun.buff = &semds;
1979#else
84902520 1980 semun.buf = &semds;
e6f0bdd6 1981#endif
c2ab57d4 1982 getinfo = (cmd == GETALL);
9b89d93d
GB
1983 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1984 return -1;
6e21c824
LW
1985 infosize = semds.sem_nsems * sizeof(short);
1986 /* "short" is technically wrong but much more portable
1987 than guessing about u_?short(_t)? */
c2ab57d4 1988 }
39398f3f 1989#else
cea2e8a9 1990 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
39398f3f 1991#endif
c2ab57d4 1992 break;
e5d73d77 1993#endif
fe14fcc3 1994#if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
e5d73d77 1995 default:
cea2e8a9 1996 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
e5d73d77 1997#endif
c2ab57d4
LW
1998 }
1999
2000 if (infosize)
2001 {
a0d0e21e 2002 STRLEN len;
c2ab57d4
LW
2003 if (getinfo)
2004 {
a0d0e21e
LW
2005 SvPV_force(astr, len);
2006 a = SvGROW(astr, infosize+1);
c2ab57d4
LW
2007 }
2008 else
2009 {
463ee0b2
LW
2010 a = SvPV(astr, len);
2011 if (len != infosize)
cea2e8a9 2012 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
4ec43091
JH
2013 PL_op_desc[optype],
2014 (unsigned long)len,
2015 (long)infosize);
c2ab57d4
LW
2016 }
2017 }
2018 else
2019 {
c030ccd9 2020 IV i = SvIV(astr);
56431972 2021 a = INT2PTR(char *,i); /* ouch */
c2ab57d4 2022 }
748a9306 2023 SETERRNO(0,0);
c2ab57d4
LW
2024 switch (optype)
2025 {
fe14fcc3 2026#ifdef HAS_MSG
79072805 2027 case OP_MSGCTL:
bee1dbe2 2028 ret = msgctl(id, cmd, (struct msqid_ds *)a);
c2ab57d4 2029 break;
e5d73d77 2030#endif
fe14fcc3 2031#ifdef HAS_SEM
bd89102f 2032 case OP_SEMCTL: {
39398f3f 2033#ifdef Semctl
bd89102f
AD
2034 union semun unsemds;
2035
e6f0bdd6
GS
2036#ifdef EXTRA_F_IN_SEMUN_BUF
2037 unsemds.buff = (struct semid_ds *)a;
2038#else
bd89102f 2039 unsemds.buf = (struct semid_ds *)a;
e6f0bdd6 2040#endif
bd89102f 2041 ret = Semctl(id, n, cmd, unsemds);
39398f3f 2042#else
cea2e8a9 2043 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
39398f3f 2044#endif
bd89102f 2045 }
c2ab57d4 2046 break;
e5d73d77 2047#endif
fe14fcc3 2048#ifdef HAS_SHM
79072805 2049 case OP_SHMCTL:
bee1dbe2 2050 ret = shmctl(id, cmd, (struct shmid_ds *)a);
c2ab57d4 2051 break;
e5d73d77 2052#endif
c2ab57d4
LW
2053 }
2054 if (getinfo && ret >= 0) {
79072805
LW
2055 SvCUR_set(astr, infosize);
2056 *SvEND(astr) = '\0';
a0d0e21e 2057 SvSETMAGIC(astr);
c2ab57d4
LW
2058 }
2059 return ret;
2060}
2061
79072805 2062I32
864dbfa3 2063Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
c2ab57d4 2064{
fe14fcc3 2065#ifdef HAS_MSG
79072805 2066 SV *mstr;
c2ab57d4 2067 char *mbuf;
79072805 2068 I32 id, msize, flags;
463ee0b2 2069 STRLEN len;
c2ab57d4 2070
463ee0b2 2071 id = SvIVx(*++mark);
79072805 2072 mstr = *++mark;
463ee0b2
LW
2073 flags = SvIVx(*++mark);
2074 mbuf = SvPV(mstr, len);
2075 if ((msize = len - sizeof(long)) < 0)
cea2e8a9 2076 Perl_croak(aTHX_ "Arg too short for msgsnd");
748a9306 2077 SETERRNO(0,0);
bee1dbe2 2078 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
e5d73d77 2079#else
cea2e8a9 2080 Perl_croak(aTHX_ "msgsnd not implemented");
e5d73d77 2081#endif
c2ab57d4
LW
2082}
2083
79072805 2084I32
864dbfa3 2085Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
c2ab57d4 2086{
fe14fcc3 2087#ifdef HAS_MSG
79072805 2088 SV *mstr;
c2ab57d4
LW
2089 char *mbuf;
2090 long mtype;
79072805 2091 I32 id, msize, flags, ret;
463ee0b2 2092 STRLEN len;
79072805 2093
463ee0b2 2094 id = SvIVx(*++mark);
79072805 2095 mstr = *++mark;
c2e66d9e
GS
2096 /* suppress warning when reading into undef var --jhi */
2097 if (! SvOK(mstr))
2098 sv_setpvn(mstr, "", 0);
463ee0b2
LW
2099 msize = SvIVx(*++mark);
2100 mtype = (long)SvIVx(*++mark);
2101 flags = SvIVx(*++mark);
a0d0e21e
LW
2102 SvPV_force(mstr, len);
2103 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
a1d180c4 2104
748a9306 2105 SETERRNO(0,0);
bee1dbe2 2106 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
c2ab57d4 2107 if (ret >= 0) {
79072805
LW
2108 SvCUR_set(mstr, sizeof(long)+ret);
2109 *SvEND(mstr) = '\0';
41d6edb2
JH
2110#ifndef INCOMPLETE_TAINTS
2111 /* who knows who has been playing with this message? */
2112 SvTAINTED_on(mstr);
2113#endif
c2ab57d4
LW
2114 }
2115 return ret;
e5d73d77 2116#else
cea2e8a9 2117 Perl_croak(aTHX_ "msgrcv not implemented");
e5d73d77 2118#endif
c2ab57d4
LW
2119}
2120
79072805 2121I32
864dbfa3 2122Perl_do_semop(pTHX_ SV **mark, SV **sp)
c2ab57d4 2123{
fe14fcc3 2124#ifdef HAS_SEM
79072805 2125 SV *opstr;
c2ab57d4 2126 char *opbuf;
463ee0b2
LW
2127 I32 id;
2128 STRLEN opsize;
c2ab57d4 2129
463ee0b2 2130 id = SvIVx(*++mark);
79072805 2131 opstr = *++mark;
463ee0b2 2132 opbuf = SvPV(opstr, opsize);
248ff010
NC
2133 if (opsize < 3 * SHORTSIZE
2134 || (opsize % (3 * SHORTSIZE))) {
93189314 2135 SETERRNO(EINVAL,LIB_INVARG);
c2ab57d4
LW
2136 return -1;
2137 }
748a9306 2138 SETERRNO(0,0);
248ff010
NC
2139 /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
2140 {
2141 int nsops = opsize / (3 * sizeof (short));
2142 int i = nsops;
2143 short *ops = (short *) opbuf;
2144 short *o = ops;
2145 struct sembuf *temps, *t;
2146 I32 result;
2147
2148 New (0, temps, nsops, struct sembuf);
2149 t = temps;
2150 while (i--) {
2151 t->sem_num = *o++;
2152 t->sem_op = *o++;
2153 t->sem_flg = *o++;
2154 t++;
2155 }
2156 result = semop(id, temps, nsops);
2157 t = temps;
2158 o = ops;
2159 i = nsops;
2160 while (i--) {
2161 *o++ = t->sem_num;
2162 *o++ = t->sem_op;
2163 *o++ = t->sem_flg;
2164 t++;
2165 }
2166 Safefree(temps);
2167 return result;
2168 }
e5d73d77 2169#else
cea2e8a9 2170 Perl_croak(aTHX_ "semop not implemented");
e5d73d77 2171#endif
c2ab57d4
LW
2172}
2173
79072805 2174I32
864dbfa3 2175Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
c2ab57d4 2176{
fe14fcc3 2177#ifdef HAS_SHM
79072805 2178 SV *mstr;
c2ab57d4 2179 char *mbuf, *shm;
79072805 2180 I32 id, mpos, msize;
463ee0b2 2181 STRLEN len;
c2ab57d4 2182 struct shmid_ds shmds;
c2ab57d4 2183
463ee0b2 2184 id = SvIVx(*++mark);
79072805 2185 mstr = *++mark;
463ee0b2
LW
2186 mpos = SvIVx(*++mark);
2187 msize = SvIVx(*++mark);
748a9306 2188 SETERRNO(0,0);
c2ab57d4
LW
2189 if (shmctl(id, IPC_STAT, &shmds) == -1)
2190 return -1;
2191 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
93189314 2192 SETERRNO(EFAULT,SS_ACCVIO); /* can't do as caller requested */
c2ab57d4
LW
2193 return -1;
2194 }
8ac85365 2195 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
c2ab57d4
LW
2196 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2197 return -1;
79072805 2198 if (optype == OP_SHMREAD) {
9f538c04
GS
2199 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2200 if (! SvOK(mstr))
2201 sv_setpvn(mstr, "", 0);
a0d0e21e
LW
2202 SvPV_force(mstr, len);
2203 mbuf = SvGROW(mstr, msize+1);
2204
bee1dbe2 2205 Copy(shm + mpos, mbuf, msize, char);
79072805
LW
2206 SvCUR_set(mstr, msize);
2207 *SvEND(mstr) = '\0';
a0d0e21e 2208 SvSETMAGIC(mstr);
d929ce6f
JH
2209#ifndef INCOMPLETE_TAINTS
2210 /* who knows who has been playing with this shared memory? */
2211 SvTAINTED_on(mstr);
2212#endif
c2ab57d4
LW
2213 }
2214 else {
79072805 2215 I32 n;
c2ab57d4 2216
a0d0e21e 2217 mbuf = SvPV(mstr, len);
463ee0b2 2218 if ((n = len) > msize)
c2ab57d4 2219 n = msize;
bee1dbe2 2220 Copy(mbuf, shm + mpos, n, char);
c2ab57d4 2221 if (n < msize)
bee1dbe2 2222 memzero(shm + mpos + n, msize - n);
c2ab57d4
LW
2223 }
2224 return shmdt(shm);
e5d73d77 2225#else
cea2e8a9 2226 Perl_croak(aTHX_ "shm I/O not implemented");
e5d73d77 2227#endif
c2ab57d4
LW
2228}
2229
fe14fcc3 2230#endif /* SYSV IPC */
4e35701f 2231
0d44d22b 2232/*
ccfc67b7
JH
2233=head1 IO Functions
2234
0d44d22b
NC
2235=for apidoc start_glob
2236
2237Function called by C<do_readline> to spawn a glob (or do the glob inside
2238perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
210b36aa 2239this glob starter is only used by miniperl during the build process.
0d44d22b 2240Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
fab3f3a7 2241
0d44d22b
NC
2242=cut
2243*/
2244
2245PerlIO *
2246Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2247{
2248 SV *tmpcmd = NEWSV(55, 0);
2249 PerlIO *fp;
2250 ENTER;
2251 SAVEFREESV(tmpcmd);
2252#ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2253 /* since spawning off a process is a real performance hit */
2254 {
2255#include <descrip.h>
2256#include <lib$routines.h>
2257#include <nam.h>
2258#include <rmsdef.h>
2259 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2260 char vmsspec[NAM$C_MAXRSS+1];
2261 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
0d44d22b
NC
2262 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2263 PerlIO *tmpfp;
2264 STRLEN i;
2265 struct dsc$descriptor_s wilddsc
2266 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2267 struct dsc$descriptor_vs rsdsc
2268 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2269 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2270
2271 /* We could find out if there's an explicit dev/dir or version
2272 by peeking into lib$find_file's internal context at
2273 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2274 but that's unsupported, so I don't want to do it now and
2275 have it bite someone in the future. */
0d44d22b
NC
2276 cp = SvPV(tmpglob,i);
2277 for (; i; i--) {
2278 if (cp[i] == ';') hasver = 1;
2279 if (cp[i] == '.') {
2280 if (sts) hasver = 1;
2281 else sts = 1;
2282 }
2283 if (cp[i] == '/') {
2284 hasdir = isunix = 1;
2285 break;
2286 }
2287 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2288 hasdir = 1;
2289 break;
2290 }
2291 }
a15cef0c 2292 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
0d44d22b
NC
2293 Stat_t st;
2294 if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
2295 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2296 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2297 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
a3987cb8
JH
2298 for (cp=wilddsc.dsc$a_pointer; ok && cp && *cp; cp++)
2299 if (*cp == '?') *cp = '%'; /* VMS style single-char wildcard */
0d44d22b
NC
2300 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2301 &dfltdsc,NULL,NULL,NULL))&1)) {
3ce6b0cb
CB
2302 /* with varying string, 1st word of buffer contains result length */
2303 end = rstr + *((unsigned short int*)rslt);
2304 if (!hasver) while (*end != ';' && end > rstr) end--;
0d44d22b
NC
2305 *(end++) = '\n'; *end = '\0';
2306 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2307 if (hasdir) {
2308 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2309 begin = rstr;
2310 }
2311 else {
2312 begin = end;
2313 while (*(--begin) != ']' && *begin != '>') ;
2314 ++begin;
2315 }
2316 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2317 }
2318 if (cxt) (void)lib$find_file_end(&cxt);
2319 if (ok && sts != RMS$_NMF &&
93189314 2320 sts != RMS$_DNF && sts != RMS_FNF) ok = 0;
0d44d22b
NC
2321 if (!ok) {
2322 if (!(sts & 1)) {
2323 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2324 }
2325 PerlIO_close(tmpfp);
2326 fp = NULL;
2327 }
2328 else {
2329 PerlIO_rewind(tmpfp);
2330 IoTYPE(io) = IoTYPE_RDONLY;
2331 IoIFP(io) = fp = tmpfp;
2332 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2333 }
2334 }
2335 }
2336#else /* !VMS */
2337#ifdef MACOS_TRADITIONAL
2338 sv_setpv(tmpcmd, "glob ");
2339 sv_catsv(tmpcmd, tmpglob);
2340 sv_catpv(tmpcmd, " |");
2341#else
2342#ifdef DOSISH
2343#ifdef OS2
2344 sv_setpv(tmpcmd, "for a in ");
2345 sv_catsv(tmpcmd, tmpglob);
2346 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2347#else
2348#ifdef DJGPP
2349 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2350 sv_catsv(tmpcmd, tmpglob);
2351#else
2352 sv_setpv(tmpcmd, "perlglob ");
2353 sv_catsv(tmpcmd, tmpglob);
2354 sv_catpv(tmpcmd, " |");
2355#endif /* !DJGPP */
2356#endif /* !OS2 */
2357#else /* !DOSISH */
2358#if defined(CSH)
2359 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2360 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2361 sv_catsv(tmpcmd, tmpglob);
2362 sv_catpv(tmpcmd, "' 2>/dev/null |");
2363#else
2364 sv_setpv(tmpcmd, "echo ");
2365 sv_catsv(tmpcmd, tmpglob);
2366#if 'z' - 'a' == 25
2367 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2368#else
2369 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2370#endif
2371#endif /* !CSH */
2372#endif /* !DOSISH */
2373#endif /* MACOS_TRADITIONAL */
2374 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2375 FALSE, O_RDONLY, 0, Nullfp);
2376 fp = IoIFP(io);
2377#endif /* !VMS */
2378 LEAVE;
2379 return fp;
2380}