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a0d0e21e 1/* doio.c
a687059c 2 *
4bb101f2 3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
770526c1 4 * 2000, 2001, 2002, 2003, 2004, 2005, 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
166f8a29
DM		 18/* This file contains functions that do the actual I/O on behalf of ops.
19 * For example, pp_print() calls the do_print() function in this file for
20 * each argument needing printing.
21 */
22
a687059c 23#include "EXTERN.h"
864dbfa3 24#define PERL_IN_DOIO_C
a687059c
LW		 25#include "perl.h"
26
fe14fcc3 27#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
aec308ec 28#ifndef HAS_SEM
c2ab57d4 29#include <sys/ipc.h>
aec308ec 30#endif
fe14fcc3 31#ifdef HAS_MSG
c2ab57d4 32#include <sys/msg.h>
e5d73d77 33#endif
fe14fcc3 34#ifdef HAS_SHM
c2ab57d4 35#include <sys/shm.h>
a0d0e21e 36# ifndef HAS_SHMAT_PROTOTYPE
20ce7b12 37 extern Shmat_t shmat (int, char *, int);
a0d0e21e 38# endif
c2ab57d4 39#endif
e5d73d77 40#endif
c2ab57d4 41
663a0e37 42#ifdef I_UTIME
3730b96e 43# if defined(_MSC_VER) || defined(__MINGW32__)
3fe9a6f1 44# include <sys/utime.h>
45# else
46# include <utime.h>
47# endif
663a0e37 48#endif
85aff577 49
85aff577
CS		 50#ifdef O_EXCL
51# define OPEN_EXCL O_EXCL
52#else
53# define OPEN_EXCL 0
54#endif
a687059c 55
0c19750d
SP		 56#define PERL_MODE_MAX 8
57#define PERL_FLAGS_MAX 10
58
76121258 59#include <signal.h>
76121258 60
a687059c 61bool
2fbb330f 62Perl_do_open(pTHX_ GV *gv, register const char *name, I32 len, int as_raw,
6170680b
IZ		 63 int rawmode, int rawperm, PerlIO *supplied_fp)
64{
a567e93b
NIS		 65 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
66 supplied_fp, (SV **) NULL, 0);
6170680b
IZ		 67}
68
69bool
2fbb330f 70Perl_do_open9(pTHX_ GV *gv, register const char *name, I32 len, int as_raw,
6170680b
IZ		 71 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
72 I32 num_svs)
a687059c 73{
890ce7af 74 PERL_UNUSED_ARG(num_svs);
a567e93b
NIS		 75 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
76 supplied_fp, &svs, 1);
77}
78
79bool
2fbb330f 80Perl_do_openn(pTHX_ GV *gv, register const char *oname, I32 len, int as_raw,
a567e93b
NIS		 81 int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
82 I32 num_svs)
83{
27da23d5 84 dVAR;
890ce7af 85 register IO * const io = GvIOn(gv);
760ac839
LW		 86 PerlIO *saveifp = Nullfp;
87 PerlIO *saveofp = Nullfp;
ee518936 88 int savefd = -1;
9f37169a 89 char savetype = IoTYPE_CLOSED;
c07a80fd 90 int writing = 0;
760ac839 91 PerlIO *fp;
c07a80fd 92 int fd;
93 int result;
3500f679 94 bool was_fdopen = FALSE;
16fe6d59 95 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
b931b1d9 96 char *type = NULL;
0c19750d 97 char mode[PERL_MODE_MAX]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
ee518936 98 SV *namesv;
a687059c 99
b931b1d9 100 Zero(mode,sizeof(mode),char);
3280af22 101 PL_forkprocess = 1; /* assume true if no fork */
c07a80fd 102
b931b1d9 103 /* Collect default raw/crlf info from the op */
16fe6d59 104 if (PL_op && PL_op->op_type == OP_OPEN) {
c2be40b1 105 /* set up IO layers */
b464bac0 106 const U8 flags = PL_op->op_private;
16fe6d59
GS		 107 in_raw = (flags & OPpOPEN_IN_RAW);
108 in_crlf = (flags & OPpOPEN_IN_CRLF);
109 out_raw = (flags & OPpOPEN_OUT_RAW);
110 out_crlf = (flags & OPpOPEN_OUT_CRLF);
111 }
112
b931b1d9 113 /* If currently open - close before we re-open */
a0d0e21e 114 if (IoIFP(io)) {
760ac839 115 fd = PerlIO_fileno(IoIFP(io));
ee518936
NIS		 116 if (IoTYPE(io) == IoTYPE_STD) {
117 /* This is a clone of one of STD* handles */
c2ab57d4 118 result = 0;
ee518936
NIS		 119 }
120 else if (fd >= 0 && fd <= PL_maxsysfd) {
121 /* This is one of the original STD* handles */
122 saveifp = IoIFP(io);
123 saveofp = IoOFP(io);
8990e307 124 savetype = IoTYPE(io);
ee518936
NIS		 125 savefd = fd;
126 result = 0;
6e21c824 127 }
50952442 128 else if (IoTYPE(io) == IoTYPE_PIPE)
3028581b 129 result = PerlProc_pclose(IoIFP(io));
8990e307
LW		 130 else if (IoIFP(io) != IoOFP(io)) {
131 if (IoOFP(io)) {
760ac839 132 result = PerlIO_close(IoOFP(io));
6170680b 133 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
c2ab57d4
LW		 134 }
135 else
760ac839 136 result = PerlIO_close(IoIFP(io));
a687059c 137 }
a687059c 138 else
760ac839 139 result = PerlIO_close(IoIFP(io));
ee518936
NIS		 140 if (result == EOF && fd > PL_maxsysfd) {
141 /* Why is this not Perl_warn*() call ? */
bf49b057 142 PerlIO_printf(Perl_error_log,
6170680b
IZ		 143 "Warning: unable to close filehandle %s properly.\n",
144 GvENAME(gv));
ee518936 145 }
8990e307 146 IoOFP(io) = IoIFP(io) = Nullfp;
a687059c 147 }
c07a80fd 148
149 if (as_raw) {
b931b1d9 150 /* sysopen style args, i.e. integer mode and permissions */
ee518936 151 STRLEN ix = 0;
e1ec3a88 152 const int appendtrunc =
3dccc55c 153 0
d1da7611 154#ifdef O_APPEND /* Not fully portable. */
3dccc55c 155 |O_APPEND
d1da7611
JH		 156#endif
157#ifdef O_TRUNC /* Not fully portable. */
3dccc55c 158 |O_TRUNC
d1da7611 159#endif
3dccc55c 160 ;
6867be6d 161 const int modifyingmode = O_WRONLY|O_RDWR|O_CREAT|appendtrunc;
3dccc55c
JH		 162 int ismodifying;
163
164 if (num_svs != 0) {
165 Perl_croak(aTHX_ "panic: sysopen with multiple args");
166 }
167 /* It's not always
168
169 O_RDONLY 0
170 O_WRONLY 1
171 O_RDWR 2
172
173 It might be (in OS/390 and Mac OS Classic it is)
174
175 O_WRONLY 1
176 O_RDONLY 2
177 O_RDWR 3
178
179 This means that simple & with O_RDWR would look
180 like O_RDONLY is present. Therefore we have to
181 be more careful.
182 */
183 if ((ismodifying = (rawmode & modifyingmode))) {
184 if ((ismodifying & O_WRONLY) == O_WRONLY ||
185 (ismodifying & O_RDWR) == O_RDWR ||
186 (ismodifying & (O_CREAT|appendtrunc)))
187 TAINT_PROPER("sysopen");
188 }
3b6c1aba 189 mode[ix++] = IoTYPE_NUMERIC; /* Marker to openn to use numeric "sysopen" */
b931b1d9 190
09458382 191#if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
b94c04ac 192 rawmode |= O_LARGEFILE; /* Transparently largefiley. */
5ff3f7a4
GS		 193#endif
194
06c7082d 195 IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing);
ee518936 196
2fbb330f 197 namesv = sv_2mortal(newSVpvn(oname,strlen(oname)));
ee518936
NIS		 198 num_svs = 1;
199 svp = &namesv;
1141d9f8 200 type = Nullch;
b94c04ac 201 fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp);
a687059c 202 }
c07a80fd 203 else {
b931b1d9 204 /* Regular (non-sys) open */
2fbb330f 205 char *name;
faecd977 206 STRLEN olen = len;
b931b1d9
NIS		 207 char *tend;
208 int dodup = 0;
ecdeb87c 209 PerlIO *that_fp = NULL;
c07a80fd 210
2fbb330f 211 type = savepvn(oname, len);
b931b1d9 212 tend = type+len;
faecd977 213 SAVEFREEPV(type);
eb649f83
AMS		 214
215 /* Lose leading and trailing white space */
eb649f83
AMS		 216 for (; isSPACE(*type); type++) ;
217 while (tend > type && isSPACE(tend[-1]))
218 *--tend = '\0';
219
6170680b 220 if (num_svs) {
c2be40b1 221 /* New style explicit name, type is just mode and layer info */
9a869a14 222#ifdef USE_STDIO
2fbb330f 223 if (SvROK(*svp) && !strchr(oname,'&')) {
9a869a14
RGS		 224 if (ckWARN(WARN_IO))
225 Perl_warner(aTHX_ packWARN(WARN_IO),
226 "Can't open a reference");
93189314 227 SETERRNO(EINVAL, LIB_INVARG);
9a869a14
RGS		 228 goto say_false;
229 }
230#endif /* USE_STDIO */
705bfa5f 231 name = SvOK(*svp) ? savesvpv (*svp) : savepvn ("", 0);
faecd977 232 SAVEFREEPV(name);
6170680b 233 }
faecd977 234 else {
faecd977 235 name = type;
b931b1d9 236 len = tend-type;
faecd977 237 }
6170680b 238 IoTYPE(io) = *type;
516a5887 239 if ((*type == IoTYPE_RDWR) && /* scary */
01a8ea99 240 (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
516a5887 241 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
c2be40b1 242 TAINT_PROPER("open");
6170680b 243 mode[1] = *type++;
c07a80fd 244 writing = 1;
a687059c 245 }
c07a80fd 246
9f37169a 247 if (*type == IoTYPE_PIPE) {
b931b1d9
NIS		 248 if (num_svs) {
249 if (type[1] != IoTYPE_STD) {
c2be40b1 250 unknown_open_mode:
b931b1d9
NIS		 251 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
252 }
253 type++;
6170680b 254 }
b931b1d9 255 for (type++; isSPACE(*type); type++) ;
faecd977 256 if (!num_svs) {
6170680b 257 name = type;
b931b1d9 258 len = tend-type;
faecd977 259 }
4a7d1889
NIS		 260 if (*name == '\0') {
261 /* command is missing 19990114 */
06eaf0bc 262 if (ckWARN(WARN_PIPE))
9014280d 263 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
06eaf0bc
GS		 264 errno = EPIPE;
265 goto say_false;
266 }
770526c1 267 if ((*name == '-' && name[1] == '\0') || num_svs)
c07a80fd 268 TAINT_ENV();
269 TAINT_PROPER("piped open");
b931b1d9 270 if (!num_svs && name[len-1] == '|') {
faecd977 271 name[--len] = '\0' ;
599cee73 272 if (ckWARN(WARN_PIPE))
9014280d 273 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe");
7b8d334a 274 }
a1d180c4 275 mode[0] = 'w';
c07a80fd 276 writing = 1;
0c19750d
SP		 277#ifdef HAS_STRLCAT
278 if (out_raw)
279 strlcat(mode, "b", PERL_MODE_MAX);
280 else if (out_crlf)
281 strlcat(mode, "t", PERL_MODE_MAX);
282#else
a1d180c4
NIS		 283 if (out_raw)
284 strcat(mode, "b");
285 else if (out_crlf)
286 strcat(mode, "t");
0c19750d 287#endif
4a7d1889
NIS		 288 if (num_svs > 1) {
289 fp = PerlProc_popen_list(mode, num_svs, svp);
290 }
291 else {
292 fp = PerlProc_popen(name,mode);
293 }
1771866f
NIS		 294 if (num_svs) {
295 if (*type) {
296 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
297 goto say_false;
298 }
299 }
300 }
c2be40b1 301 } /* IoTYPE_PIPE */
9f37169a 302 else if (*type == IoTYPE_WRONLY) {
c07a80fd 303 TAINT_PROPER("open");
6170680b 304 type++;
9f37169a
JH		 305 if (*type == IoTYPE_WRONLY) {
306 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
50952442 307 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
6170680b 308 type++;
a0d0e21e 309 }
ee518936 310 else {
c07a80fd 311 mode[0] = 'w';
ee518936 312 }
c07a80fd 313 writing = 1;
314
0c19750d
SP		 315#ifdef HAS_STRLCAT
316 if (out_raw)
317 strlcat(mode, "b", PERL_MODE_MAX);
318 else if (out_crlf)
319 strlcat(mode, "t", PERL_MODE_MAX);
320#else
16fe6d59
GS		 321 if (out_raw)
322 strcat(mode, "b");
323 else if (out_crlf)
324 strcat(mode, "t");
0c19750d 325#endif
6170680b 326 if (*type == '&') {
c07a80fd 327 duplicity:
ecdeb87c 328 dodup = PERLIO_DUP_FD;
e620cd72
NIS		 329 type++;
330 if (*type == '=') {
c07a80fd 331 dodup = 0;
e620cd72 332 type++;
4a7d1889 333 }
ee518936 334 if (!num_svs && !*type && supplied_fp) {
4a7d1889 335 /* "<+&" etc. is used by typemaps */
c07a80fd 336 fp = supplied_fp;
ee518936 337 }
a0d0e21e 338 else {
e620cd72
NIS		 339 if (num_svs > 1) {
340 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
341 }
54edfe98 342 for (; isSPACE(*type); type++) ;
1771866f 343 if (num_svs && (SvIOK(*svp) || (SvPOK(*svp) && looks_like_number(*svp)))) {
e620cd72 344 fd = SvUV(*svp);
24a7a40d 345 num_svs = 0;
ee518936 346 }
e620cd72 347 else if (isDIGIT(*type)) {
e620cd72
NIS		 348 fd = atoi(type);
349 }
c07a80fd 350 else {
e1ec3a88 351 const IO* thatio;
e620cd72
NIS		 352 if (num_svs) {
353 thatio = sv_2io(*svp);
354 }
355 else {
356 GV *thatgv;
e620cd72
NIS		 357 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
358 thatio = GvIO(thatgv);
359 }
c07a80fd 360 if (!thatio) {
6e21c824 361#ifdef EINVAL
93189314 362 SETERRNO(EINVAL,SS_IVCHAN);
6e21c824 363#endif
c07a80fd 364 goto say_false;
365 }
f4e789af 366 if ((that_fp = IoIFP(thatio))) {
7211d486
JH		 367 /* Flush stdio buffer before dup. --mjd
368 * Unfortunately SEEK_CURing 0 seems to
369 * be optimized away on most platforms;
370 * only Solaris and Linux seem to flush
371 * on that. --jhi */
2c534a3f
NC		 372#ifdef USE_SFIO
373 /* sfio fails to clear error on next
374 sfwrite, contrary to documentation.
375 -- Nick Clark */
ecdeb87c
NIS		 376 if (PerlIO_seek(that_fp, 0, SEEK_CUR) == -1)
377 PerlIO_clearerr(that_fp);
2c534a3f 378#endif
7211d486
JH		 379 /* On the other hand, do all platforms
380 * take gracefully to flushing a read-only
381 * filehandle? Perhaps we should do
382 * fsetpos(src)+fgetpos(dst)? --nik */
ecdeb87c
NIS		 383 PerlIO_flush(that_fp);
384 fd = PerlIO_fileno(that_fp);
0759c907
JH		 385 /* When dup()ing STDIN, STDOUT or STDERR
386 * explicitly set appropriate access mode */
f4e789af
NC		 387 if (that_fp == PerlIO_stdout()
388 || that_fp == PerlIO_stderr())
0759c907 389 IoTYPE(io) = IoTYPE_WRONLY;
f4e789af 390 else if (that_fp == PerlIO_stdin())
0759c907
JH		 391 IoTYPE(io) = IoTYPE_RDONLY;
392 /* When dup()ing a socket, say result is
393 * one as well */
394 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
50952442 395 IoTYPE(io) = IoTYPE_SOCKET;
c07a80fd 396 }
397 else
398 fd = -1;
a0d0e21e 399 }
ee518936 400 if (!num_svs)
1141d9f8 401 type = Nullch;
ecdeb87c
NIS		 402 if (that_fp) {
403 fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup);
404 }
405 else {
c07a80fd 406 if (dodup)
ecdeb87c
NIS		 407 fd = PerlLIO_dup(fd);
408 else
409 was_fdopen = TRUE;
410 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
411 if (dodup)
412 PerlLIO_close(fd);
413 }
faecd977 414 }
c07a80fd 415 }
ee518936 416 } /* & */
c07a80fd 417 else {
6170680b 418 for (; isSPACE(*type); type++) ;
b931b1d9 419 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
b931b1d9 420 type++;
760ac839 421 fp = PerlIO_stdout();
50952442 422 IoTYPE(io) = IoTYPE_STD;
7cf31beb
NIS		 423 if (num_svs > 1) {
424 Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD);
425 }
c07a80fd 426 }
427 else {
ee518936
NIS		 428 if (!num_svs) {
429 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
430 num_svs = 1;
431 svp = &namesv;
1141d9f8 432 type = Nullch;
ee518936 433 }
6e60e805 434 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
c07a80fd 435 }
ee518936 436 } /* !& */
7e72d509
JH		 437 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
438 goto unknown_open_mode;
c2be40b1 439 } /* IoTYPE_WRONLY */
9f37169a 440 else if (*type == IoTYPE_RDONLY) {
6170680b 441 for (type++; isSPACE(*type); type++) ;
bf38876a 442 mode[0] = 'r';
0c19750d
SP		 443#ifdef HAS_STRLCAT
444 if (in_raw)
445 strlcat(mode, "b", PERL_MODE_MAX);
446 else if (in_crlf)
447 strlcat(mode, "t", PERL_MODE_MAX);
448#else
16fe6d59
GS		 449 if (in_raw)
450 strcat(mode, "b");
451 else if (in_crlf)
452 strcat(mode, "t");
0c19750d 453#endif
6170680b 454 if (*type == '&') {
bf38876a 455 goto duplicity;
6170680b 456 }
b931b1d9 457 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
b931b1d9 458 type++;
760ac839 459 fp = PerlIO_stdin();
50952442 460 IoTYPE(io) = IoTYPE_STD;
7cf31beb
NIS		 461 if (num_svs > 1) {
462 Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD);
463 }
a687059c 464 }
ee518936
NIS		 465 else {
466 if (!num_svs) {
467 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
468 num_svs = 1;
469 svp = &namesv;
1141d9f8 470 type = Nullch;
ee518936 471 }
6e60e805 472 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
ee518936 473 }
7e72d509
JH		 474 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
475 goto unknown_open_mode;
c2be40b1
JH		 476 } /* IoTYPE_RDONLY */
477 else if ((num_svs && /* '-|...' or '...|' */
478 type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
b931b1d9 479 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
6170680b 480 if (num_svs) {
b931b1d9 481 type += 2; /* skip over '-|' */
6170680b
IZ		 482 }
483 else {
b931b1d9
NIS		 484 *--tend = '\0';
485 while (tend > type && isSPACE(tend[-1]))
486 *--tend = '\0';
a6e20a40
AL		 487 for (; isSPACE(*type); type++)
488 ;
6170680b 489 name = type;
b931b1d9 490 len = tend-type;
6170680b 491 }
4a7d1889
NIS		 492 if (*name == '\0') {
493 /* command is missing 19990114 */
06eaf0bc 494 if (ckWARN(WARN_PIPE))
9014280d 495 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
06eaf0bc
GS		 496 errno = EPIPE;
497 goto say_false;
498 }
770526c1 499 if (!(*name == '-' && name[1] == '\0') || num_svs)
79072805
LW		 500 TAINT_ENV();
501 TAINT_PROPER("piped open");
a1d180c4 502 mode[0] = 'r';
0c19750d
SP		 503
504#ifdef HAS_STRLCAT
505 if (in_raw)
506 strlcat(mode, "b", PERL_MODE_MAX);
507 else if (in_crlf)
508 strlcat(mode, "t", PERL_MODE_MAX);
509#else
a1d180c4
NIS		 510 if (in_raw)
511 strcat(mode, "b");
512 else if (in_crlf)
513 strcat(mode, "t");
0c19750d
SP		 514#endif
515
4a7d1889
NIS		 516 if (num_svs > 1) {
517 fp = PerlProc_popen_list(mode,num_svs,svp);
518 }
e620cd72 519 else {
4a7d1889
NIS		 520 fp = PerlProc_popen(name,mode);
521 }
50952442 522 IoTYPE(io) = IoTYPE_PIPE;
1771866f
NIS		 523 if (num_svs) {
524 for (; isSPACE(*type); type++) ;
525 if (*type) {
526 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
527 goto say_false;
528 }
529 }
530 }
a687059c 531 }
c2be40b1 532 else { /* layer(Args) */
6170680b 533 if (num_svs)
c2be40b1 534 goto unknown_open_mode;
6170680b 535 name = type;
50952442 536 IoTYPE(io) = IoTYPE_RDONLY;
a6e20a40
AL		 537 for (; isSPACE(*name); name++)
538 ;
88b61e10 539 mode[0] = 'r';
0c19750d
SP		 540
541#ifdef HAS_STRLCAT
542 if (in_raw)
543 strlcat(mode, "b", PERL_MODE_MAX);
544 else if (in_crlf)
545 strlcat(mode, "t", PERL_MODE_MAX);
546#else
88b61e10
NIS		 547 if (in_raw)
548 strcat(mode, "b");
549 else if (in_crlf)
550 strcat(mode, "t");
0c19750d
SP		 551#endif
552
770526c1 553 if (*name == '-' && name[1] == '\0') {
760ac839 554 fp = PerlIO_stdin();
50952442 555 IoTYPE(io) = IoTYPE_STD;
a687059c 556 }
16fe6d59 557 else {
ee518936
NIS		 558 if (!num_svs) {
559 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
560 num_svs = 1;
561 svp = &namesv;
1141d9f8 562 type = Nullch;
ee518936 563 }
6e60e805 564 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
16fe6d59 565 }
a687059c
LW		 566 }
567 }
bee1dbe2 568 if (!fp) {
ce44635a 569 if (IoTYPE(io) == IoTYPE_RDONLY && ckWARN(WARN_NEWLINE)
2fbb330f 570 && strchr(oname, '\n')
ce44635a 571
041457d9 572 )
9014280d 573 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
6e21c824 574 goto say_false;
bee1dbe2 575 }
a00b5bd3
NIS		 576
577 if (ckWARN(WARN_IO)) {
578 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
579 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
9014280d 580 Perl_warner(aTHX_ packWARN(WARN_IO),
97828cef
RGS		 581 "Filehandle STD%s reopened as %s only for input",
582 ((fp == PerlIO_stdout()) ? "OUT" : "ERR"),
583 GvENAME(gv));
a00b5bd3 584 }
ee518936 585 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
9014280d 586 Perl_warner(aTHX_ packWARN(WARN_IO),
97828cef
RGS		 587 "Filehandle STDIN reopened as %s only for output",
588 GvENAME(gv));
a00b5bd3
NIS		 589 }
590 }
591
e99cca91 592 fd = PerlIO_fileno(fp);
e934609f
JH		 593 /* If there is no fd (e.g. PerlIO::scalar) assume it isn't a
594 * socket - this covers PerlIO::scalar - otherwise unless we "know" the
e99cca91
NIS		 595 * type probe for socket-ness.
596 */
597 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) {
598 if (PerlLIO_fstat(fd,&PL_statbuf) < 0) {
599 /* If PerlIO claims to have fd we had better be able to fstat() it. */
600 (void) PerlIO_close(fp);
6e21c824 601 goto say_false;
a687059c 602 }
7114a2d2 603#ifndef PERL_MICRO
3280af22 604 if (S_ISSOCK(PL_statbuf.st_mode))
50952442 605 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
99b89507
LW		 606#ifdef HAS_SOCKET
607 else if (
c623bd54 608#ifdef S_IFMT
3280af22 609 !(PL_statbuf.st_mode & S_IFMT)
99b89507 610#else
b28d0864 611 !PL_statbuf.st_mode
99b89507 612#endif
0759c907
JH		 613 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
614 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
615 ) { /* on OS's that return 0 on fstat()ed pipe */
e99cca91
NIS		 616 char tmpbuf[256];
617 Sock_size_t buflen = sizeof tmpbuf;
618 if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0
619 || errno != ENOTSOCK)
620 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
621 /* but some return 0 for streams too, sigh */
99b89507 622 }
e99cca91 623#endif /* HAS_SOCKET */
7114a2d2 624#endif /* !PERL_MICRO */
a687059c 625 }
e99cca91
NIS		 626
627 /* Eeek - FIXME !!!
628 * If this is a standard handle we discard all the layer stuff
629 * and just dup the fd into whatever was on the handle before !
630 */
631
6e21c824 632 if (saveifp) { /* must use old fp? */
f5b9d040 633 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
24c23ab4 634 then dup the new fileno down
f5b9d040 635 */
6e21c824 636 if (saveofp) {
f5b9d040 637 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
6e21c824 638 if (saveofp != saveifp) { /* was a socket? */
760ac839 639 PerlIO_close(saveofp);
6e21c824
LW		 640 }
641 }
6e60e805 642 if (savefd != fd) {
e934609f 643 /* Still a small can-of-worms here if (say) PerlIO::scalar
ecdeb87c
NIS		 644 is assigned to (say) STDOUT - for now let dup2() fail
645 and provide the error
646 */
bd4a5668
NIS		 647 if (PerlLIO_dup2(fd, savefd) < 0) {
648 (void)PerlIO_close(fp);
649 goto say_false;
650 }
d082dcd6 651#ifdef VMS
6e60e805 652 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
d0e2cf63
AMS		 653 char newname[FILENAME_MAX+1];
654 if (PerlIO_getname(fp, newname)) {
655 if (fd == PerlIO_fileno(PerlIO_stdout()))
656 Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
657 if (fd == PerlIO_fileno(PerlIO_stderr()))
658 Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
659 }
d082dcd6
JH		 660 }
661#endif
d0e2cf63
AMS		 662
663#if !defined(WIN32)
664 /* PL_fdpid isn't used on Windows, so avoid this useless work.
665 * XXX Probably the same for a lot of other places. */
666 {
667 Pid_t pid;
668 SV *sv;
669
670 LOCK_FDPID_MUTEX;
671 sv = *av_fetch(PL_fdpid,fd,TRUE);
862a34c6 672 SvUPGRADE(sv, SVt_IV);
d0e2cf63 673 pid = SvIVX(sv);
45977657 674 SvIV_set(sv, 0);
d0e2cf63 675 sv = *av_fetch(PL_fdpid,savefd,TRUE);
862a34c6 676 SvUPGRADE(sv, SVt_IV);
45977657 677 SvIV_set(sv, pid);
d0e2cf63
AMS		 678 UNLOCK_FDPID_MUTEX;
679 }
680#endif
681
e212fc47
AMS		 682 if (was_fdopen) {
683 /* need to close fp without closing underlying fd */
684 int ofd = PerlIO_fileno(fp);
685 int dupfd = PerlLIO_dup(ofd);
03e631df
JH		 686#if defined(HAS_FCNTL) && defined(F_SETFD)
687 /* Assume if we have F_SETFD we have F_GETFD */
688 int coe = fcntl(ofd,F_GETFD);
689#endif
e212fc47
AMS		 690 PerlIO_close(fp);
691 PerlLIO_dup2(dupfd,ofd);
03e631df
JH		 692#if defined(HAS_FCNTL) && defined(F_SETFD)
693 /* The dup trick has lost close-on-exec on ofd */
694 fcntl(ofd,F_SETFD, coe);
695#endif
e212fc47 696 PerlLIO_close(dupfd);
ecdeb87c 697 }
e212fc47
AMS		 698 else
699 PerlIO_close(fp);
6e21c824
LW		 700 }
701 fp = saveifp;
760ac839 702 PerlIO_clearerr(fp);
e99cca91 703 fd = PerlIO_fileno(fp);
6e21c824 704 }
a0d0e21e 705#if defined(HAS_FCNTL) && defined(F_SETFD)
e99cca91 706 if (fd >= 0) {
a8710ca1 707 int save_errno = errno;
a8710ca1
GS		 708 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
709 errno = save_errno;
710 }
1462b684 711#endif
8990e307 712 IoIFP(io) = fp;
b931b1d9 713
684bef36 714 IoFLAGS(io) &= ~IOf_NOLINE;
bf38876a 715 if (writing) {
50952442 716 if (IoTYPE(io) == IoTYPE_SOCKET
e99cca91 717 || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(PL_statbuf.st_mode)) ) {
a33cf58c 718 char *s = mode;
3b6c1aba
JH		 719 if (*s == IoTYPE_IMPLICIT || *s == IoTYPE_NUMERIC)
720 s++;
a33cf58c 721 *s = 'w';
1feb1812 722 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,s,fd,0,0,NULL,0,svp))) {
760ac839 723 PerlIO_close(fp);
8990e307 724 IoIFP(io) = Nullfp;
6e21c824 725 goto say_false;
fe14fcc3 726 }
1462b684
LW		 727 }
728 else
8990e307 729 IoOFP(io) = fp;
bf38876a 730 }
a687059c 731 return TRUE;
6e21c824
LW		 732
733say_false:
8990e307
LW		 734 IoIFP(io) = saveifp;
735 IoOFP(io) = saveofp;
736 IoTYPE(io) = savetype;
6e21c824 737 return FALSE;
a687059c
LW		 738}
739
760ac839 740PerlIO *
864dbfa3 741Perl_nextargv(pTHX_ register GV *gv)
a687059c 742{
79072805 743 register SV *sv;
99b89507 744#ifndef FLEXFILENAMES
c623bd54
LW		 745 int filedev;
746 int fileino;
99b89507 747#endif
761237fe
JB		 748 Uid_t fileuid;
749 Gid_t filegid;
2d03de9c 750 IO * const io = GvIOp(gv);
fe14fcc3 751
3280af22
NIS		 752 if (!PL_argvoutgv)
753 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
18708f5a
GS		 754 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
755 IoFLAGS(io) &= ~IOf_START;
7a1c5554
GS		 756 if (PL_inplace) {
757 if (!PL_argvout_stack)
758 PL_argvout_stack = newAV();
18708f5a 759 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
7a1c5554 760 }
18708f5a 761 }
3280af22
NIS		 762 if (PL_filemode & (S_ISUID|S_ISGID)) {
763 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
fe14fcc3 764#ifdef HAS_FCHMOD
c797f2d8
DM		 765 if (PL_lastfd != -1)
766 (void)fchmod(PL_lastfd,PL_filemode);
fe14fcc3 767#else
b28d0864 768 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
fe14fcc3
LW		 769#endif
770 }
c797f2d8 771 PL_lastfd = -1;
3280af22 772 PL_filemode = 0;
5c501b37
JH		 773 if (!GvAV(gv))
774 return Nullfp;
79072805 775 while (av_len(GvAV(gv)) >= 0) {
85aff577 776 STRLEN oldlen;
79072805 777 sv = av_shift(GvAV(gv));
8990e307 778 SAVEFREESV(sv);
e203899d 779 sv_setsv(GvSVn(gv),sv);
79072805 780 SvSETMAGIC(GvSV(gv));
3280af22 781 PL_oldname = SvPVx(GvSV(gv), oldlen);
9d116dd7 782 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
3280af22 783 if (PL_inplace) {
79072805 784 TAINT_PROPER("inplace open");
3280af22 785 if (oldlen == 1 && *PL_oldname == '-') {
4633a7c4 786 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
a0d0e21e 787 return IoIFP(GvIOp(gv));
c623bd54 788 }
99b89507 789#ifndef FLEXFILENAMES
b28d0864
NIS		 790 filedev = PL_statbuf.st_dev;
791 fileino = PL_statbuf.st_ino;
99b89507 792#endif
3280af22
NIS		 793 PL_filemode = PL_statbuf.st_mode;
794 fileuid = PL_statbuf.st_uid;
795 filegid = PL_statbuf.st_gid;
796 if (!S_ISREG(PL_filemode)) {
0453d815 797 if (ckWARN_d(WARN_INPLACE))
9014280d 798 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
0453d815
PM		 799 "Can't do inplace edit: %s is not a regular file",
800 PL_oldname );
79072805 801 do_close(gv,FALSE);
c623bd54
LW		 802 continue;
803 }
3280af22 804 if (*PL_inplace) {
2d03de9c 805 const char *star = strchr(PL_inplace, '*');
2d259d92 806 if (star) {
2d03de9c 807 const char *begin = PL_inplace;
2d259d92
CK		 808 sv_setpvn(sv, "", 0);
809 do {
810 sv_catpvn(sv, begin, star - begin);
3280af22 811 sv_catpvn(sv, PL_oldname, oldlen);
2d259d92
CK		 812 begin = ++star;
813 } while ((star = strchr(begin, '*')));
3d66d7bb
GS		 814 if (*begin)
815 sv_catpv(sv,begin);
2d259d92
CK		 816 }
817 else {
3280af22 818 sv_catpv(sv,PL_inplace);
2d259d92 819 }
c623bd54 820#ifndef FLEXFILENAMES
95a20fc0 821 if ((PerlLIO_stat(SvPVX_const(sv),&PL_statbuf) >= 0
5f74f29c
JH		 822 && PL_statbuf.st_dev == filedev
823 && PL_statbuf.st_ino == fileino)
39e571d4 824#ifdef DJGPP
5f74f29c 825 || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0)
39e571d4 826#endif
f248d071
GS		 827 )
828 {
829 if (ckWARN_d(WARN_INPLACE))
9014280d 830 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
35c1215d
NC		 831 "Can't do inplace edit: %"SVf" would not be unique",
832 sv);
79072805 833 do_close(gv,FALSE);
c623bd54
LW		 834 continue;
835 }
836#endif
fe14fcc3 837#ifdef HAS_RENAME
2585f9a3 838#if !defined(DOSISH) && !defined(__CYGWIN__) && !defined(EPOC)
95a20fc0 839 if (PerlLIO_rename(PL_oldname,SvPVX_const(sv)) < 0) {
0453d815 840 if (ckWARN_d(WARN_INPLACE))
9014280d 841 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
35c1215d
NC		 842 "Can't rename %s to %"SVf": %s, skipping file",
843 PL_oldname, sv, Strerror(errno) );
79072805 844 do_close(gv,FALSE);
c623bd54
LW		 845 continue;
846 }
a687059c 847#else
79072805 848 do_close(gv,FALSE);
95a20fc0
SP		 849 (void)PerlLIO_unlink(SvPVX_const(sv));
850 (void)PerlLIO_rename(PL_oldname,SvPVX_const(sv));
93524f2b
NC		 851 do_open(gv,(char*)SvPVX_const(sv),SvCUR(sv),PL_inplace!=0,
852 O_RDONLY,0,Nullfp);
55497cff 853#endif /* DOSISH */
ff8e2863 854#else
95a20fc0
SP		 855 (void)UNLINK(SvPVX_const(sv));
856 if (link(PL_oldname,SvPVX_const(sv)) < 0) {
0453d815 857 if (ckWARN_d(WARN_INPLACE))
9014280d 858 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
35c1215d
NC		 859 "Can't rename %s to %"SVf": %s, skipping file",
860 PL_oldname, sv, Strerror(errno) );
79072805 861 do_close(gv,FALSE);
c623bd54
LW		 862 continue;
863 }
b28d0864 864 (void)UNLINK(PL_oldname);
a687059c
LW		 865#endif
866 }
867 else {
c030f24b 868#if !defined(DOSISH) && !defined(AMIGAOS)
edc7bc49 869# ifndef VMS /* Don't delete; use automatic file versioning */
3280af22 870 if (UNLINK(PL_oldname) < 0) {
0453d815 871 if (ckWARN_d(WARN_INPLACE))
9014280d 872 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
0453d815
PM		 873 "Can't remove %s: %s, skipping file",
874 PL_oldname, Strerror(errno) );
79072805 875 do_close(gv,FALSE);
fe14fcc3
LW		 876 continue;
877 }
edc7bc49 878# endif
ff8e2863 879#else
cea2e8a9 880 Perl_croak(aTHX_ "Can't do inplace edit without backup");
ff8e2863 881#endif
a687059c
LW		 882 }
883
3280af22
NIS		 884 sv_setpvn(sv,">",!PL_inplace);
885 sv_catpvn(sv,PL_oldname,oldlen);
748a9306 886 SETERRNO(0,0); /* in case sprintf set errno */
4119ab01 887#ifdef VMS
93524f2b
NC		 888 if (!do_open(PL_argvoutgv,(char*)SvPVX_const(sv),SvCUR(sv),
889 PL_inplace!=0,O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
4119ab01 890#else
93524f2b
NC		 891 if (!do_open(PL_argvoutgv,(char*)SvPVX_const(sv),SvCUR(sv),
892 PL_inplace!=0,O_WRONLY|O_CREAT|OPEN_EXCL,0666,
893 Nullfp))
4119ab01 894#endif
18708f5a 895 {
0453d815 896 if (ckWARN_d(WARN_INPLACE))
9014280d 897 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: %s",
0453d815 898 PL_oldname, Strerror(errno) );
79072805 899 do_close(gv,FALSE);
fe14fcc3
LW		 900 continue;
901 }
3280af22
NIS		 902 setdefout(PL_argvoutgv);
903 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
904 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
fe14fcc3 905#ifdef HAS_FCHMOD
3280af22 906 (void)fchmod(PL_lastfd,PL_filemode);
a687059c 907#else
3e3baf6d
TB		 908# if !(defined(WIN32) && defined(__BORLANDC__))
909 /* Borland runtime creates a readonly file! */
b28d0864 910 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
3e3baf6d 911# endif
a687059c 912#endif
3280af22 913 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
fe14fcc3 914#ifdef HAS_FCHOWN
3280af22 915 (void)fchown(PL_lastfd,fileuid,filegid);
a687059c 916#else
fe14fcc3 917#ifdef HAS_CHOWN
b28d0864 918 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
a687059c 919#endif
b1248f16 920#endif
fe14fcc3 921 }
a687059c 922 }
a0d0e21e 923 return IoIFP(GvIOp(gv));
a687059c 924 }
4d61ec05 925 else {
4d61ec05 926 if (ckWARN_d(WARN_INPLACE)) {
4373e329 927 const int eno = errno;
6af84f9f
GS		 928 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
929 && !S_ISREG(PL_statbuf.st_mode))
930 {
9014280d 931 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
4d61ec05 932 "Can't do inplace edit: %s is not a regular file",
9a7dcd9c 933 PL_oldname);
6af84f9f 934 }
4d61ec05 935 else
9014280d 936 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s",
6af84f9f 937 PL_oldname, Strerror(eno));
4d61ec05
GS		 938 }
939 }
a687059c 940 }
18708f5a
GS		 941 if (io && (IoFLAGS(io) & IOf_ARGV))
942 IoFLAGS(io) |= IOf_START;
3280af22
NIS		 943 if (PL_inplace) {
944 (void)do_close(PL_argvoutgv,FALSE);
7a1c5554
GS		 945 if (io && (IoFLAGS(io) & IOf_ARGV)
946 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
947 {
18708f5a
GS		 948 GV *oldout = (GV*)av_pop(PL_argvout_stack);
949 setdefout(oldout);
950 SvREFCNT_dec(oldout);
951 return Nullfp;
952 }
4633a7c4 953 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
a687059c
LW		 954 }
955 return Nullfp;
956}
957
fe14fcc3 958#ifdef HAS_PIPE
afd9f252 959void
864dbfa3 960Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
afd9f252 961{
79072805
LW		 962 register IO *rstio;
963 register IO *wstio;
afd9f252
LW		 964 int fd[2];
965
79072805 966 if (!rgv)
afd9f252 967 goto badexit;
79072805 968 if (!wgv)
afd9f252
LW		 969 goto badexit;
970
a0d0e21e
LW		 971 rstio = GvIOn(rgv);
972 wstio = GvIOn(wgv);
afd9f252 973
a0d0e21e 974 if (IoIFP(rstio))
79072805 975 do_close(rgv,FALSE);
a0d0e21e 976 if (IoIFP(wstio))
79072805 977 do_close(wgv,FALSE);
afd9f252 978
3028581b 979 if (PerlProc_pipe(fd) < 0)
afd9f252 980 goto badexit;
460c8493
IZ		 981 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
982 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
b5ac89c3 983 IoOFP(rstio) = IoIFP(rstio);
8990e307 984 IoIFP(wstio) = IoOFP(wstio);
50952442
JH		 985 IoTYPE(rstio) = IoTYPE_RDONLY;
986 IoTYPE(wstio) = IoTYPE_WRONLY;
8990e307 987 if (!IoIFP(rstio) || !IoOFP(wstio)) {
760ac839 988 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
3028581b 989 else PerlLIO_close(fd[0]);
760ac839 990 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
3028581b 991 else PerlLIO_close(fd[1]);
fe14fcc3
LW		 992 goto badexit;
993 }
afd9f252 994
3280af22 995 sv_setsv(sv,&PL_sv_yes);
afd9f252
LW		 996 return;
997
998badexit:
3280af22 999 sv_setsv(sv,&PL_sv_undef);
afd9f252
LW		 1000 return;
1001}
b1248f16 1002#endif
afd9f252 1003
517844ec 1004/* explicit renamed to avoid C++ conflict -- kja */
a687059c 1005bool
864dbfa3 1006Perl_do_close(pTHX_ GV *gv, bool not_implicit)
a687059c 1007{
1193dd27
IZ		 1008 bool retval;
1009 IO *io;
a687059c 1010
79072805 1011 if (!gv)
3280af22 1012 gv = PL_argvgv;
a0d0e21e 1013 if (!gv || SvTYPE(gv) != SVt_PVGV) {
1d2dff63 1014 if (not_implicit)
93189314 1015 SETERRNO(EBADF,SS_IVCHAN);
c2ab57d4 1016 return FALSE;
99b89507 1017 }
79072805
LW		 1018 io = GvIO(gv);
1019 if (!io) { /* never opened */
1d2dff63 1020 if (not_implicit) {
2dd78f96
JH		 1021 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
1022 report_evil_fh(gv, io, PL_op->op_type);
93189314 1023 SETERRNO(EBADF,SS_IVCHAN);
1d2dff63 1024 }
a687059c
LW		 1025 return FALSE;
1026 }
f2b5be74 1027 retval = io_close(io, not_implicit);
517844ec 1028 if (not_implicit) {
1193dd27
IZ		 1029 IoLINES(io) = 0;
1030 IoPAGE(io) = 0;
1031 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1032 }
50952442 1033 IoTYPE(io) = IoTYPE_CLOSED;
1193dd27
IZ		 1034 return retval;
1035}
1036
1037bool
f2b5be74 1038Perl_io_close(pTHX_ IO *io, bool not_implicit)
1193dd27
IZ		 1039{
1040 bool retval = FALSE;
1193dd27 1041
8990e307 1042 if (IoIFP(io)) {
50952442 1043 if (IoTYPE(io) == IoTYPE_PIPE) {
4373e329 1044 const int status = PerlProc_pclose(IoIFP(io));
f2b5be74
GS		 1045 if (not_implicit) {
1046 STATUS_NATIVE_SET(status);
e5218da5 1047 retval = (STATUS_UNIX == 0);
f2b5be74
GS		 1048 }
1049 else {
1050 retval = (status != -1);
1051 }
a687059c 1052 }
50952442 1053 else if (IoTYPE(io) == IoTYPE_STD)
a687059c
LW		 1054 retval = TRUE;
1055 else {
8990e307 1056 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
e199e3be
RGS		 1057 bool prev_err = PerlIO_error(IoOFP(io));
1058 retval = (PerlIO_close(IoOFP(io)) != EOF && !prev_err);
760ac839 1059 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
c2ab57d4 1060 }
e199e3be
RGS		 1061 else {
1062 bool prev_err = PerlIO_error(IoIFP(io));
1063 retval = (PerlIO_close(IoIFP(io)) != EOF && !prev_err);
1064 }
a687059c 1065 }
8990e307 1066 IoOFP(io) = IoIFP(io) = Nullfp;
79072805 1067 }
f2b5be74 1068 else if (not_implicit) {
93189314 1069 SETERRNO(EBADF,SS_IVCHAN);
20408e3c 1070 }
1193dd27 1071
a687059c
LW		 1072 return retval;
1073}
1074
1075bool
864dbfa3 1076Perl_do_eof(pTHX_ GV *gv)
a687059c 1077{
79072805 1078 register IO *io;
a687059c
LW		 1079 int ch;
1080
79072805 1081 io = GvIO(gv);
a687059c 1082
79072805 1083 if (!io)
a687059c 1084 return TRUE;
041457d9 1085 else if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
06bcfee8 1086 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
a687059c 1087
8990e307 1088 while (IoIFP(io)) {
505fdf5d 1089 int saverrno;
a687059c 1090
760ac839 1091 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
a20bf0c3 1092 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
760ac839
LW		 1093 return FALSE; /* this is the most usual case */
1094 }
a687059c 1095
505fdf5d 1096 saverrno = errno; /* getc and ungetc can stomp on errno */
760ac839 1097 ch = PerlIO_getc(IoIFP(io));
a687059c 1098 if (ch != EOF) {
760ac839 1099 (void)PerlIO_ungetc(IoIFP(io),ch);
505fdf5d 1100 errno = saverrno;
a687059c
LW		 1101 return FALSE;
1102 }
505fdf5d 1103 errno = saverrno;
fab3f3a7 1104
760ac839 1105 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
a20bf0c3
JH		 1106 if (PerlIO_get_cnt(IoIFP(io)) < -1)
1107 PerlIO_set_cnt(IoIFP(io),-1);
760ac839 1108 }
533c011a 1109 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
ed2c6b9b 1110 if (gv != PL_argvgv || !nextargv(gv)) /* get another fp handy */
a687059c
LW		 1111 return TRUE;
1112 }
1113 else
1114 return TRUE; /* normal fp, definitely end of file */
1115 }
1116 return TRUE;
1117}
1118
5ff3f7a4 1119Off_t
864dbfa3 1120Perl_do_tell(pTHX_ GV *gv)
a687059c 1121{
9c5ffd7c 1122 register IO *io = 0;
96e4d5b1 1123 register PerlIO *fp;
a687059c 1124
96e4d5b1 1125 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
bee1dbe2 1126#ifdef ULTRIX_STDIO_BOTCH
96e4d5b1 1127 if (PerlIO_eof(fp))
1128 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
bee1dbe2 1129#endif
8903cb82 1130 return PerlIO_tell(fp);
96e4d5b1 1131 }
411caa50
JH		 1132 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1133 report_evil_fh(gv, io, PL_op->op_type);
93189314 1134 SETERRNO(EBADF,RMS_IFI);
5ff3f7a4 1135 return (Off_t)-1;
a687059c
LW		 1136}
1137
1138bool
864dbfa3 1139Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
a687059c 1140{
9c5ffd7c 1141 register IO *io = 0;
137443ea 1142 register PerlIO *fp;
a687059c 1143
137443ea 1144 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
bee1dbe2 1145#ifdef ULTRIX_STDIO_BOTCH
137443ea 1146 if (PerlIO_eof(fp))
1147 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
bee1dbe2 1148#endif
8903cb82 1149 return PerlIO_seek(fp, pos, whence) >= 0;
137443ea 1150 }
411caa50
JH		 1151 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1152 report_evil_fh(gv, io, PL_op->op_type);
93189314 1153 SETERRNO(EBADF,RMS_IFI);
a687059c
LW		 1154 return FALSE;
1155}
1156
97cc44eb 1157Off_t
864dbfa3 1158Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
8903cb82 1159{
9c5ffd7c 1160 register IO *io = 0;
8903cb82 1161 register PerlIO *fp;
1162
1163 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
3028581b 1164 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
411caa50
JH		 1165 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1166 report_evil_fh(gv, io, PL_op->op_type);
93189314 1167 SETERRNO(EBADF,RMS_IFI);
d9b3e12d 1168 return (Off_t)-1;
8903cb82 1169}
1170
6ff81951 1171int
16fe6d59
GS		 1172Perl_mode_from_discipline(pTHX_ SV *discp)
1173{
1174 int mode = O_BINARY;
1175 if (discp) {
1176 STRLEN len;
e62f0680 1177 const char *s = SvPV_const(discp,len);
16fe6d59
GS		 1178 while (*s) {
1179 if (*s == ':') {
1180 switch (s[1]) {
1181 case 'r':
e963d6d2 1182 if (s[2] == 'a' && s[3] == 'w'
16fe6d59
GS		 1183 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1184 {
1185 mode = O_BINARY;
1186 s += 4;
1187 len -= 4;
1188 break;
1189 }
1190 /* FALL THROUGH */
1191 case 'c':
e963d6d2 1192 if (s[2] == 'r' && s[3] == 'l' && s[4] == 'f'
16fe6d59
GS		 1193 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1194 {
1195 mode = O_TEXT;
1196 s += 5;
1197 len -= 5;
1198 break;
1199 }
1200 /* FALL THROUGH */
1201 default:
1202 goto fail_discipline;
1203 }
1204 }
1205 else if (isSPACE(*s)) {
1206 ++s;
1207 --len;
1208 }
1209 else {
4373e329 1210 const char *end;
16fe6d59
GS		 1211fail_discipline:
1212 end = strchr(s+1, ':');
1213 if (!end)
1214 end = s+len;
60382766 1215#ifndef PERLIO_LAYERS
363c40c4 1216 Perl_croak(aTHX_ "IO layers (like '%.*s') unavailable", end-s, s);
60382766 1217#else
18a33fb5 1218 len -= end-s;
60382766
NIS		 1219 s = end;
1220#endif
16fe6d59
GS		 1221 }
1222 }
1223 }
1224 return mode;
1225}
1226
1227int
1228Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
6ff81951 1229{
60382766
NIS		 1230 /* The old body of this is now in non-LAYER part of perlio.c
1231 * This is a stub for any XS code which might have been calling it.
1232 */
e1ec3a88 1233 const char *name = ":raw";
35990314 1234#ifdef PERLIO_USING_CRLF
8b24e160 1235 if (!(mode & O_BINARY))
6ce75a77
JH		 1236 name = ":crlf";
1237#endif
60382766 1238 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
6ff81951
GS		 1239}
1240
58e24eff 1241#if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE)
27da23d5
JH		 1242I32
1243my_chsize(int fd, Off_t length)
6eb13c3b 1244{
58e24eff
SH		 1245#ifdef F_FREESP
1246 /* code courtesy of William Kucharski */
1247#define HAS_CHSIZE
1248
6eb13c3b 1249 struct flock fl;
c623ac67 1250 Stat_t filebuf;
6eb13c3b 1251
3028581b 1252 if (PerlLIO_fstat(fd, &filebuf) < 0)
6eb13c3b
LW		 1253 return -1;
1254
1255 if (filebuf.st_size < length) {
1256
1257 /* extend file length */
1258
3028581b 1259 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
6eb13c3b
LW		 1260 return -1;
1261
1262 /* write a "0" byte */
1263
3028581b 1264 if ((PerlLIO_write(fd, "", 1)) != 1)
6eb13c3b
LW		 1265 return -1;
1266 }
1267 else {
1268 /* truncate length */
1269
1270 fl.l_whence = 0;
1271 fl.l_len = 0;
1272 fl.l_start = length;
a0d0e21e 1273 fl.l_type = F_WRLCK; /* write lock on file space */
6eb13c3b
LW		 1274
1275 /*
a0d0e21e 1276 * This relies on the UNDOCUMENTED F_FREESP argument to
6eb13c3b
LW		 1277 * fcntl(2), which truncates the file so that it ends at the
1278 * position indicated by fl.l_start.
1279 *
1280 * Will minor miracles never cease?
1281 */
1282
a0d0e21e 1283 if (fcntl(fd, F_FREESP, &fl) < 0)
6eb13c3b
LW		 1284 return -1;
1285
1286 }
6eb13c3b 1287 return 0;
58e24eff 1288#else
27da23d5 1289 Perl_croak_nocontext("truncate not implemented");
a0d0e21e 1290#endif /* F_FREESP */
27da23d5 1291 return -1;
58e24eff
SH		 1292}
1293#endif /* !HAS_TRUNCATE && !HAS_CHSIZE */
ff8e2863 1294
a687059c 1295bool
864dbfa3 1296Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
a687059c 1297{
e1ec3a88 1298 register const char *tmps;
463ee0b2 1299 STRLEN len;
a687059c 1300
79072805
LW		 1301 /* assuming fp is checked earlier */
1302 if (!sv)
1303 return TRUE;
79072805
LW		 1304 switch (SvTYPE(sv)) {
1305 case SVt_NULL:
411caa50 1306 if (ckWARN(WARN_UNINITIALIZED))
29489e7c 1307 report_uninit(sv);
ff8e2863 1308 return TRUE;
79072805 1309 case SVt_IV:
a0d0e21e
LW		 1310 if (SvIOK(sv)) {
1311 if (SvGMAGICAL(sv))
1312 mg_get(sv);
cf2093f6 1313 if (SvIsUV(sv))
57def98f 1314 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
cf2093f6 1315 else
57def98f 1316 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
760ac839 1317 return !PerlIO_error(fp);
a0d0e21e
LW		 1318 }
1319 /* FALL THROUGH */
79072805 1320 default:
7d59b7e4 1321 if (PerlIO_isutf8(fp)) {
f9a63242 1322 if (!SvUTF8(sv))
88632417
JH		 1323 sv_utf8_upgrade_flags(sv = sv_mortalcopy(sv),
1324 SV_GMAGIC|SV_UTF8_NO_ENCODING);
7d59b7e4 1325 }
ae798467 1326 else if (DO_UTF8(sv)) {
2da16753 1327 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)
62961d2e 1328 && ckWARN_d(WARN_UTF8))
2da16753 1329 {
9014280d 1330 Perl_warner(aTHX_ packWARN(WARN_UTF8), "Wide character in print");
ae798467
NIS		 1331 }
1332 }
5c144d81 1333 tmps = SvPV_const(sv, len);
79072805 1334 break;
ff8e2863 1335 }
94e4c244
JH		 1336 /* To detect whether the process is about to overstep its
1337 * filesize limit we would need getrlimit(). We could then
1338 * also transparently raise the limit with setrlimit() --
1339 * but only until the system hard limit/the filesystem limit,
c5dd3cdd
JH		 1340 * at which we would get EPERM. Note that when using buffered
1341 * io the write failure can be delayed until the flush/close. --jhi */
a21ac455 1342 if (len && (PerlIO_write(fp,tmps,len) == 0))
a687059c 1343 return FALSE;
760ac839 1344 return !PerlIO_error(fp);
a687059c
LW		 1345}
1346
79072805 1347I32
cea2e8a9 1348Perl_my_stat(pTHX)
a687059c 1349{
39644a26 1350 dSP;
79072805 1351 IO *io;
2dd78f96 1352 GV* gv;
79072805 1353
533c011a 1354 if (PL_op->op_flags & OPf_REF) {
924508f0 1355 EXTEND(SP,1);
2dd78f96 1356 gv = cGVOP_gv;
748a9306 1357 do_fstat:
2dd78f96 1358 io = GvIO(gv);
8990e307 1359 if (io && IoIFP(io)) {
2dd78f96 1360 PL_statgv = gv;
c69006e4 1361 sv_setpvn(PL_statname,"", 0);
3280af22
NIS		 1362 PL_laststype = OP_STAT;
1363 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
a687059c
LW		 1364 }
1365 else {
2dd78f96 1366 if (gv == PL_defgv)
3280af22 1367 return PL_laststatval;
2dd78f96
JH		 1368 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1369 report_evil_fh(gv, io, PL_op->op_type);
3280af22 1370 PL_statgv = Nullgv;
c69006e4 1371 sv_setpvn(PL_statname,"", 0);
3280af22 1372 return (PL_laststatval = -1);
a687059c
LW		 1373 }
1374 }
fbb0b3b3
RGS		 1375 else if (PL_op->op_private & OPpFT_STACKED) {
1376 return PL_laststatval;
1377 }
a687059c 1378 else {
748a9306 1379 SV* sv = POPs;
4373e329 1380 const char *s;
4ecd490c 1381 STRLEN len;
79072805 1382 PUTBACK;
748a9306 1383 if (SvTYPE(sv) == SVt_PVGV) {
2dd78f96 1384 gv = (GV*)sv;
748a9306
LW		 1385 goto do_fstat;
1386 }
1387 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2dd78f96 1388 gv = (GV*)SvRV(sv);
748a9306
LW		 1389 goto do_fstat;
1390 }
1391
5c144d81 1392 s = SvPV_const(sv, len);
3280af22 1393 PL_statgv = Nullgv;
4ecd490c 1394 sv_setpvn(PL_statname, s, len);
95a20fc0 1395 s = SvPVX_const(PL_statname); /* s now NUL-terminated */
3280af22
NIS		 1396 PL_laststype = OP_STAT;
1397 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
ce44635a 1398 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
9014280d 1399 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
3280af22 1400 return PL_laststatval;
a687059c
LW		 1401 }
1402}
1403
27da23d5 1404static const char no_prev_lstat[] = "The stat preceding -l _ wasn't an lstat";
fbb0b3b3 1405
79072805 1406I32
cea2e8a9 1407Perl_my_lstat(pTHX)
c623bd54 1408{
39644a26 1409 dSP;
79072805 1410 SV *sv;
533c011a 1411 if (PL_op->op_flags & OPf_REF) {
924508f0 1412 EXTEND(SP,1);
638eceb6 1413 if (cGVOP_gv == PL_defgv) {
3280af22 1414 if (PL_laststype != OP_LSTAT)
fbb0b3b3 1415 Perl_croak(aTHX_ no_prev_lstat);
3280af22 1416 return PL_laststatval;
fe14fcc3 1417 }
5d3e98de 1418 if (ckWARN(WARN_IO)) {
9014280d 1419 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
5d3e98de
RGS		 1420 GvENAME(cGVOP_gv));
1421 return (PL_laststatval = -1);
1422 }
fe14fcc3 1423 }
041457d9
DM		 1424 else if (PL_laststype != OP_LSTAT
1425 && (PL_op->op_private & OPpFT_STACKED) && ckWARN(WARN_IO))
fbb0b3b3 1426 Perl_croak(aTHX_ no_prev_lstat);
c623bd54 1427
3280af22
NIS		 1428 PL_laststype = OP_LSTAT;
1429 PL_statgv = Nullgv;
79072805
LW		 1430 sv = POPs;
1431 PUTBACK;
5d3e98de 1432 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV && ckWARN(WARN_IO)) {
9014280d 1433 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
5d3e98de
RGS		 1434 GvENAME((GV*) SvRV(sv)));
1435 return (PL_laststatval = -1);
1436 }
4373e329 1437 /* XXX Do really need to be calling SvPV() all these times? */
e62f0680
NC		 1438 sv_setpv(PL_statname,SvPV_nolen_const(sv));
1439 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(sv),&PL_statcache);
1440 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(sv), '\n'))
9014280d 1441 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat");
3280af22 1442 return PL_laststatval;
c623bd54
LW		 1443}
1444
622913ab 1445#ifndef OS2
a687059c 1446bool
864dbfa3 1447Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
a687059c 1448{
d5a9bfb0
IZ		 1449 return do_aexec5(really, mark, sp, 0, 0);
1450}
622913ab 1451#endif
d5a9bfb0
IZ		 1452
1453bool
2aa1486d
GS		 1454Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1455 int fd, int do_report)
d5a9bfb0 1456{
27da23d5
JH		 1457 dVAR;
1458#if defined(MACOS_TRADITIONAL) || defined(SYMBIAN)
cd39f2b6
JH		 1459 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1460#else
79072805 1461 if (sp > mark) {
c3c5fad7 1462 char **a;
890ce7af 1463 const char *tmps = Nullch;
c3c5fad7
DM		 1464 Newx(PL_Argv, sp - mark + 1, char*);
1465 a = PL_Argv;
890ce7af 1466
79072805
LW		 1467 while (++mark <= sp) {
1468 if (*mark)
e62f0680 1469 *a++ = (char*)SvPV_nolen_const(*mark);
a687059c
LW		 1470 else
1471 *a++ = "";
1472 }
1473 *a = Nullch;
91b2752f 1474 if (really)
e62f0680 1475 tmps = SvPV_nolen_const(really);
91b2752f
RG		 1476 if ((!really && *PL_Argv[0] != '/') ||
1477 (really && *tmps != '/')) /* will execvp use PATH? */
79072805 1478 TAINT_ENV(); /* testing IFS here is overkill, probably */
b35112e7 1479 PERL_FPU_PRE_EXEC
91b2752f 1480 if (really && *tmps)
b4748376 1481 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
a687059c 1482 else
b4748376 1483 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
b35112e7 1484 PERL_FPU_POST_EXEC
599cee73 1485 if (ckWARN(WARN_EXEC))
9014280d 1486 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
91b2752f 1487 (really ? tmps : PL_Argv[0]), Strerror(errno));
d5a9bfb0
IZ		 1488 if (do_report) {
1489 int e = errno;
1490
1491 PerlLIO_write(fd, (void*)&e, sizeof(int));
1492 PerlLIO_close(fd);
1493 }
a687059c 1494 }
bee1dbe2 1495 do_execfree();
cd39f2b6 1496#endif
a687059c
LW		 1497 return FALSE;
1498}
1499
fe14fcc3 1500void
864dbfa3 1501Perl_do_execfree(pTHX)
ff8e2863 1502{
43c5f42d
NC		 1503 Safefree(PL_Argv);
1504 PL_Argv = Null(char **);
1505 Safefree(PL_Cmd);
1506 PL_Cmd = Nullch;
ff8e2863
LW		 1507}
1508
27da23d5 1509#if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(SYMBIAN) && !defined(MACOS_TRADITIONAL)
760ac839 1510
a687059c 1511bool
2fbb330f 1512Perl_do_exec(pTHX_ const char *cmd)
a687059c 1513{
e446cec8
IZ		 1514 return do_exec3(cmd,0,0);
1515}
1516
1517bool
2fbb330f 1518Perl_do_exec3(pTHX_ const char *incmd, int fd, int do_report)
e446cec8 1519{
27da23d5 1520 dVAR;
a687059c
LW		 1521 register char **a;
1522 register char *s;
2fbb330f
JM		 1523 char *cmd;
1524 int cmdlen;
1525
1526 /* Make a copy so we can change it */
1527 cmdlen = strlen(incmd);
1528 Newx(cmd, cmdlen+1, char);
1529 strncpy(cmd, incmd, cmdlen);
1530 cmd[cmdlen] = 0;
a687059c 1531
748a9306
LW		 1532 while (*cmd && isSPACE(*cmd))
1533 cmd++;
1534
a687059c
LW		 1535 /* save an extra exec if possible */
1536
bf38876a 1537#ifdef CSH
d05c1ba0 1538 {
0c19750d 1539 char flags[PERL_FLAGS_MAX];
d05c1ba0
JH		 1540 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1541 strnEQ(cmd+PL_cshlen," -c",3)) {
0c19750d
SP		 1542#ifdef HAS_STRLCPY
1543 strlcpy(flags, "-c", PERL_FLAGS_MAX);
1544#else
d05c1ba0 1545 strcpy(flags,"-c");
0c19750d 1546#endif
d05c1ba0
JH		 1547 s = cmd+PL_cshlen+3;
1548 if (*s == 'f') {
1549 s++;
0c19750d
SP		 1550#ifdef HAS_STRLCPY
1551 strlcat(flags, "f", PERL_FLAGS_MAX);
1552#else
d05c1ba0 1553 strcat(flags,"f");
0c19750d 1554#endif
d05c1ba0
JH		 1555 }
1556 if (*s == ' ')
1557 s++;
1558 if (*s++ == '\'') {
1559 char *ncmd = s;
1560
1561 while (*s)
1562 s++;
1563 if (s[-1] == '\n')
1564 *--s = '\0';
1565 if (s[-1] == '\'') {
1566 *--s = '\0';
b35112e7 1567 PERL_FPU_PRE_EXEC
d05c1ba0 1568 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
b35112e7 1569 PERL_FPU_POST_EXEC
d05c1ba0 1570 *s = '\'';
2fbb330f 1571 Safefree(cmd);
d05c1ba0
JH		 1572 return FALSE;
1573 }
1574 }
a687059c
LW		 1575 }
1576 }
bf38876a 1577#endif /* CSH */
a687059c
LW		 1578
1579 /* see if there are shell metacharacters in it */
1580
748a9306
LW		 1581 if (*cmd == '.' && isSPACE(cmd[1]))
1582 goto doshell;
1583
1584 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1585 goto doshell;
1586
c170e444 1587 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
63f2c1e1
LW		 1588 if (*s == '=')
1589 goto doshell;
748a9306 1590
a687059c 1591 for (s = cmd; *s; s++) {
d05c1ba0
JH		 1592 if (*s != ' ' && !isALPHA(*s) &&
1593 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
a687059c
LW		 1594 if (*s == '\n' && !s[1]) {
1595 *s = '\0';
1596 break;
1597 }
603a98b0
IZ		 1598 /* handle the 2>&1 construct at the end */
1599 if (*s == '>' && s[1] == '&' && s[2] == '1'
1600 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1601 && (!s[3] || isSPACE(s[3])))
1602 {
6867be6d 1603 const char *t = s + 3;
603a98b0
IZ		 1604
1605 while (*t && isSPACE(*t))
1606 ++t;
943bbd07 1607 if (!*t && (PerlLIO_dup2(1,2) != -1)) {
603a98b0
IZ		 1608 s[-2] = '\0';
1609 break;
1610 }
1611 }
a687059c 1612 doshell:
b35112e7 1613 PERL_FPU_PRE_EXEC
3280af22 1614 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
b35112e7 1615 PERL_FPU_POST_EXEC
2fbb330f 1616 Safefree(cmd);
a687059c
LW		 1617 return FALSE;
1618 }
1619 }
748a9306 1620
a02a5408 1621 Newx(PL_Argv, (s - cmd) / 2 + 2, char*);
3280af22
NIS		 1622 PL_Cmd = savepvn(cmd, s-cmd);
1623 a = PL_Argv;
1624 for (s = PL_Cmd; *s;) {
99b89507 1625 while (*s && isSPACE(*s)) s++;
a687059c
LW		 1626 if (*s)
1627 *(a++) = s;
99b89507 1628 while (*s && !isSPACE(*s)) s++;
a687059c
LW		 1629 if (*s)
1630 *s++ = '\0';
1631 }
1632 *a = Nullch;
3280af22 1633 if (PL_Argv[0]) {
b35112e7 1634 PERL_FPU_PRE_EXEC
3280af22 1635 PerlProc_execvp(PL_Argv[0],PL_Argv);
b35112e7 1636 PERL_FPU_POST_EXEC
b1248f16 1637 if (errno == ENOEXEC) { /* for system V NIH syndrome */
ff8e2863 1638 do_execfree();
a687059c 1639 goto doshell;
b1248f16 1640 }
d008e5eb 1641 {
d008e5eb 1642 if (ckWARN(WARN_EXEC))
9014280d 1643 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
d008e5eb 1644 PL_Argv[0], Strerror(errno));
e446cec8 1645 if (do_report) {
6867be6d 1646 int e = errno;
e446cec8
IZ		 1647 PerlLIO_write(fd, (void*)&e, sizeof(int));
1648 PerlLIO_close(fd);
1649 }
d008e5eb 1650 }
a687059c 1651 }
ff8e2863 1652 do_execfree();
2fbb330f 1653 Safefree(cmd);
a687059c
LW		 1654 return FALSE;
1655}
1656
6890e559 1657#endif /* OS2 || WIN32 */
760ac839 1658
79072805 1659I32
864dbfa3 1660Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
a687059c 1661{
79072805 1662 register I32 val;
79072805 1663 register I32 tot = 0;
e1ec3a88 1664 const char *what;
5c144d81 1665 const char *s;
890ce7af 1666 SV ** const oldmark = mark;
a687059c 1667
20408e3c 1668#define APPLY_TAINT_PROPER() \
3280af22 1669 STMT_START { \
17406bd6 1670 if (PL_tainted) { TAINT_PROPER(what); } \
873ef191 1671 } STMT_END
20408e3c
GS		 1672
1673 /* This is a first heuristic; it doesn't catch tainting magic. */
3280af22 1674 if (PL_tainting) {
463ee0b2 1675 while (++mark <= sp) {
bbce6d69 1676 if (SvTAINTED(*mark)) {
1677 TAINT;
1678 break;
1679 }
463ee0b2
LW		 1680 }
1681 mark = oldmark;
1682 }
a687059c 1683 switch (type) {
79072805 1684 case OP_CHMOD:
20408e3c
GS		 1685 what = "chmod";
1686 APPLY_TAINT_PROPER();
79072805 1687 if (++mark <= sp) {
463ee0b2 1688 val = SvIVx(*mark);
20408e3c
GS		 1689 APPLY_TAINT_PROPER();
1690 tot = sp - mark;
79072805 1691 while (++mark <= sp) {
c4aca7d0
GA		 1692 GV* gv;
1693 if (SvTYPE(*mark) == SVt_PVGV) {
1694 gv = (GV*)*mark;
1695 do_fchmod:
1696 if (GvIO(gv) && IoIFP(GvIOp(gv))) {
1697#ifdef HAS_FCHMOD
1698 APPLY_TAINT_PROPER();
1699 if (fchmod(PerlIO_fileno(IoIFP(GvIOn(gv))), val))
1700 tot--;
1701#else
b9c6780e 1702 Perl_die(aTHX_ PL_no_func, "fchmod");
c4aca7d0
GA		 1703#endif
1704 }
1705 else {
1706 tot--;
1707 }
1708 }
1709 else if (SvROK(*mark) && SvTYPE(SvRV(*mark)) == SVt_PVGV) {
1710 gv = (GV*)SvRV(*mark);
1711 goto do_fchmod;
1712 }
1713 else {
1714 const char *name = SvPV_nolen_const(*mark);
1715 APPLY_TAINT_PROPER();
1716 if (PerlLIO_chmod(name, val))
1717 tot--;
1718 }
a687059c
LW		 1719 }
1720 }
1721 break;
fe14fcc3 1722#ifdef HAS_CHOWN
79072805 1723 case OP_CHOWN:
20408e3c
GS		 1724 what = "chown";
1725 APPLY_TAINT_PROPER();
79072805 1726 if (sp - mark > 2) {
6867be6d 1727 register I32 val2;
463ee0b2
LW		 1728 val = SvIVx(*++mark);
1729 val2 = SvIVx(*++mark);
20408e3c 1730 APPLY_TAINT_PROPER();
a0d0e21e 1731 tot = sp - mark;
79072805 1732 while (++mark <= sp) {
c4aca7d0
GA		 1733 GV* gv;
1734 if (SvTYPE(*mark) == SVt_PVGV) {
1735 gv = (GV*)*mark;
1736 do_fchown:
1737 if (GvIO(gv) && IoIFP(GvIOp(gv))) {
1738#ifdef HAS_FCHOWN
1739 APPLY_TAINT_PROPER();
1740 if (fchown(PerlIO_fileno(IoIFP(GvIOn(gv))), val, val2))
1741 tot--;
1742#else
b9c6780e 1743 Perl_die(aTHX_ PL_no_func, "fchown");
c4aca7d0
GA		 1744#endif
1745 }
1746 else {
1747 tot--;
1748 }
1749 }
1750 else if (SvROK(*mark) && SvTYPE(SvRV(*mark)) == SVt_PVGV) {
1751 gv = (GV*)SvRV(*mark);
1752 goto do_fchown;
1753 }
1754 else {
1755 const char *name = SvPV_nolen_const(*mark);
1756 APPLY_TAINT_PROPER();
1757 if (PerlLIO_chown(name, val, val2))
1758 tot--;
1759 }
a687059c
LW		 1760 }
1761 }
1762 break;
b1248f16 1763#endif
a1d180c4 1764/*
dd64f1c3
AD		 1765XXX Should we make lchown() directly available from perl?
1766For now, we'll let Configure test for HAS_LCHOWN, but do
1767nothing in the core.
1768 --AD 5/1998
1769*/
fe14fcc3 1770#ifdef HAS_KILL
79072805 1771 case OP_KILL:
20408e3c
GS		 1772 what = "kill";
1773 APPLY_TAINT_PROPER();
55497cff 1774 if (mark == sp)
1775 break;
e62f0680 1776 s = SvPVx_nolen_const(*++mark);
e02bfb16 1777 if (isALPHA(*s)) {
79072805
LW		 1778 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1779 s += 3;
e02bfb16 1780 if ((val = whichsig(s)) < 0)
cea2e8a9 1781 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
79072805
LW		 1782 }
1783 else
463ee0b2 1784 val = SvIVx(*mark);
20408e3c
GS		 1785 APPLY_TAINT_PROPER();
1786 tot = sp - mark;
3595fcef 1787#ifdef VMS
1788 /* kill() doesn't do process groups (job trees?) under VMS */
1789 if (val < 0) val = -val;
1790 if (val == SIGKILL) {
1791# include <starlet.h>
1792 /* Use native sys$delprc() to insure that target process is
1793 * deleted; supervisor-mode images don't pay attention to
1794 * CRTL's emulation of Unix-style signals and kill()
1795 */
1796 while (++mark <= sp) {
1797 I32 proc = SvIVx(*mark);
1798 register unsigned long int __vmssts;
20408e3c 1799 APPLY_TAINT_PROPER();
3595fcef 1800 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1801 tot--;
1802 switch (__vmssts) {
1803 case SS$_NONEXPR:
1804 case SS$_NOSUCHNODE:
1805 SETERRNO(ESRCH,__vmssts);
1806 break;
1807 case SS$_NOPRIV:
1808 SETERRNO(EPERM,__vmssts);
1809 break;
1810 default:
1811 SETERRNO(EVMSERR,__vmssts);
1812 }
1813 }
1814 }
1815 break;
1816 }
1817#endif
79072805
LW		 1818 if (val < 0) {
1819 val = -val;
1820 while (++mark <= sp) {
463ee0b2 1821 I32 proc = SvIVx(*mark);
20408e3c 1822 APPLY_TAINT_PROPER();
fe14fcc3 1823#ifdef HAS_KILLPG
3028581b 1824 if (PerlProc_killpg(proc,val)) /* BSD */
a687059c 1825#else
3028581b 1826 if (PerlProc_kill(-proc,val)) /* SYSV */
a687059c 1827#endif
79072805 1828 tot--;
a687059c 1829 }
79072805
LW		 1830 }
1831 else {
1832 while (++mark <= sp) {
20408e3c
GS		 1833 I32 proc = SvIVx(*mark);
1834 APPLY_TAINT_PROPER();
1835 if (PerlProc_kill(proc, val))
79072805 1836 tot--;
a687059c
LW		 1837 }
1838 }
1839 break;
b1248f16 1840#endif
79072805 1841 case OP_UNLINK:
20408e3c
GS		 1842 what = "unlink";
1843 APPLY_TAINT_PROPER();
79072805
LW		 1844 tot = sp - mark;
1845 while (++mark <= sp) {
e62f0680 1846 s = SvPV_nolen_const(*mark);
20408e3c 1847 APPLY_TAINT_PROPER();
3280af22 1848 if (PL_euid || PL_unsafe) {
b8ffc8df 1849 if (UNLINK(s))
a687059c
LW		 1850 tot--;
1851 }
1852 else { /* don't let root wipe out directories without -U */
3280af22 1853 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
a687059c
LW		 1854 tot--;
1855 else {
b8ffc8df 1856 if (UNLINK(s))
a687059c
LW		 1857 tot--;
1858 }
1859 }
1860 }
1861 break;
a0d0e21e 1862#ifdef HAS_UTIME
79072805 1863 case OP_UTIME:
20408e3c
GS		 1864 what = "utime";
1865 APPLY_TAINT_PROPER();
79072805 1866 if (sp - mark > 2) {
748a9306 1867#if defined(I_UTIME) || defined(VMS)
663a0e37 1868 struct utimbuf utbuf;
07409e01 1869 struct utimbuf *utbufp = &utbuf;
663a0e37 1870#else
a687059c 1871 struct {
dd2821f6
GS		 1872 Time_t actime;
1873 Time_t modtime;
a687059c 1874 } utbuf;
07409e01 1875 void *utbufp = &utbuf;
663a0e37 1876#endif
a687059c 1877
c6f7b413
RS		 1878 SV* accessed = *++mark;
1879 SV* modified = *++mark;
c6f7b413 1880
6ec06612
SB		 1881 /* Be like C, and if both times are undefined, let the C
1882 * library figure out what to do. This usually means
1883 * "current time". */
c6f7b413
RS		 1884
1885 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
6ec06612
SB		 1886 utbufp = NULL;
1887 else {
1888 Zero(&utbuf, sizeof utbuf, char);
517844ec 1889#ifdef BIG_TIME
6ec06612
SB		 1890 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1891 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
517844ec 1892#else
6ec06612
SB		 1893 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1894 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
517844ec 1895#endif
6ec06612 1896 }
4373e329 1897 APPLY_TAINT_PROPER();
79072805
LW		 1898 tot = sp - mark;
1899 while (++mark <= sp) {
d08fa760 1900 char *name = SvPV_nolen(*mark);
20408e3c 1901 APPLY_TAINT_PROPER();
4373e329 1902 if (PerlLIO_utime(name, utbufp))
a687059c
LW		 1903 tot--;
1904 }
a687059c
LW		 1905 }
1906 else
79072805 1907 tot = 0;
a687059c 1908 break;
a0d0e21e 1909#endif
a687059c
LW		 1910 }
1911 return tot;
20408e3c 1912
20408e3c 1913#undef APPLY_TAINT_PROPER
a687059c
LW		 1914}
1915
1916/* Do the permissions allow some operation? Assumes statcache already set. */
a0d0e21e 1917#ifndef VMS /* VMS' cando is in vms.c */
7f4774ae 1918bool
4373e329 1919Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register const Stat_t *statbufp)
a0288114 1920/* Note: we use "effective" both for uids and gids.
7f4774ae 1921 * Here we are betting on Uid_t being equal or wider than Gid_t. */
a687059c 1922{
bee1dbe2 1923#ifdef DOSISH
fe14fcc3
LW		 1924 /* [Comments and code from Len Reed]
1925 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1926 * to write-protected files. The execute permission bit is set
1927 * by the Miscrosoft C library stat() function for the following:
1928 * .exe files
1929 * .com files
1930 * .bat files
1931 * directories
1932 * All files and directories are readable.
1933 * Directories and special files, e.g. "CON", cannot be
1934 * write-protected.
1935 * [Comment by Tom Dinger -- a directory can have the write-protect
1936 * bit set in the file system, but DOS permits changes to
1937 * the directory anyway. In addition, all bets are off
1938 * here for networked software, such as Novell and
1939 * Sun's PC-NFS.]
1940 */
1941
bee1dbe2
LW		 1942 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1943 * too so it will actually look into the files for magic numbers
1944 */
7f4774ae 1945 return (mode & statbufp->st_mode) ? TRUE : FALSE;
fe14fcc3 1946
55497cff 1947#else /* ! DOSISH */
3280af22 1948 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
7f4774ae 1949 if (mode == S_IXUSR) {
c623bd54 1950 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
a687059c
LW		 1951 return TRUE;
1952 }
1953 else
1954 return TRUE; /* root reads and writes anything */
1955 return FALSE;
1956 }
3280af22 1957 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
7f4774ae 1958 if (statbufp->st_mode & mode)
a687059c
LW		 1959 return TRUE; /* ok as "user" */
1960 }
d8eceb89 1961 else if (ingroup(statbufp->st_gid,effective)) {
7f4774ae 1962 if (statbufp->st_mode & mode >> 3)
a687059c
LW		 1963 return TRUE; /* ok as "group" */
1964 }
7f4774ae 1965 else if (statbufp->st_mode & mode >> 6)
a687059c
LW		 1966 return TRUE; /* ok as "other" */
1967 return FALSE;
55497cff 1968#endif /* ! DOSISH */
a687059c 1969}
a0d0e21e 1970#endif /* ! VMS */
a687059c 1971
d8eceb89
JH		 1972bool
1973Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
a687059c 1974{
cd39f2b6
JH		 1975#ifdef MACOS_TRADITIONAL
1976 /* This is simply not correct for AppleShare, but fix it yerself. */
1977 return TRUE;
1978#else
3280af22 1979 if (testgid == (effective ? PL_egid : PL_gid))
a687059c 1980 return TRUE;
fe14fcc3 1981#ifdef HAS_GETGROUPS
a687059c
LW		 1982#ifndef NGROUPS
1983#define NGROUPS 32
1984#endif
1985 {
a0d0e21e 1986 Groups_t gary[NGROUPS];
79072805 1987 I32 anum;
a687059c
LW		 1988
1989 anum = getgroups(NGROUPS,gary);
1990 while (--anum >= 0)
1991 if (gary[anum] == testgid)
1992 return TRUE;
1993 }
1994#endif
1995 return FALSE;
cd39f2b6 1996#endif
a687059c 1997}
c2ab57d4 1998
fe14fcc3 1999#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
c2ab57d4 2000
79072805 2001I32
864dbfa3 2002Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
c2ab57d4 2003{
6867be6d
AL		 2004 key_t key = (key_t)SvNVx(*++mark);
2005 const I32 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
2006 const I32 flags = SvIVx(*++mark);
2007 (void)sp;
c2ab57d4 2008
748a9306 2009 SETERRNO(0,0);
c2ab57d4
LW		 2010 switch (optype)
2011 {
fe14fcc3 2012#ifdef HAS_MSG
79072805 2013 case OP_MSGGET:
c2ab57d4 2014 return msgget(key, flags);
e5d73d77 2015#endif
fe14fcc3 2016#ifdef HAS_SEM
79072805 2017 case OP_SEMGET:
c2ab57d4 2018 return semget(key, n, flags);
e5d73d77 2019#endif
fe14fcc3 2020#ifdef HAS_SHM
79072805 2021 case OP_SHMGET:
c2ab57d4 2022 return shmget(key, n, flags);
e5d73d77 2023#endif
fe14fcc3 2024#if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
e5d73d77 2025 default:
cea2e8a9 2026 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
e5d73d77 2027#endif
c2ab57d4
LW		 2028 }
2029 return -1; /* should never happen */
2030}
2031
79072805 2032I32
864dbfa3 2033Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
c2ab57d4 2034{
79072805 2035 SV *astr;
c2ab57d4 2036 char *a;
b464bac0
AL		 2037 STRLEN infosize;
2038 I32 getinfo;
a0d0e21e 2039 I32 ret = -1;
6867be6d
AL		 2040 const I32 id = SvIVx(*++mark);
2041 const I32 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
2042 const I32 cmd = SvIVx(*++mark);
890ce7af 2043 PERL_UNUSED_ARG(sp);
c2ab57d4 2044
79072805 2045 astr = *++mark;
c2ab57d4
LW		 2046 infosize = 0;
2047 getinfo = (cmd == IPC_STAT);
2048
2049 switch (optype)
2050 {
fe14fcc3 2051#ifdef HAS_MSG
79072805 2052 case OP_MSGCTL:
c2ab57d4
LW		 2053 if (cmd == IPC_STAT || cmd == IPC_SET)
2054 infosize = sizeof(struct msqid_ds);
2055 break;
e5d73d77 2056#endif
fe14fcc3 2057#ifdef HAS_SHM
79072805 2058 case OP_SHMCTL:
c2ab57d4
LW		 2059 if (cmd == IPC_STAT || cmd == IPC_SET)
2060 infosize = sizeof(struct shmid_ds);
2061 break;
e5d73d77 2062#endif
fe14fcc3 2063#ifdef HAS_SEM
79072805 2064 case OP_SEMCTL:
39398f3f 2065#ifdef Semctl
c2ab57d4
LW		 2066 if (cmd == IPC_STAT || cmd == IPC_SET)
2067 infosize = sizeof(struct semid_ds);
2068 else if (cmd == GETALL || cmd == SETALL)
2069 {
8e591e46 2070 struct semid_ds semds;
bd89102f 2071 union semun semun;
e6f0bdd6
GS		 2072#ifdef EXTRA_F_IN_SEMUN_BUF
2073 semun.buff = &semds;
2074#else
84902520 2075 semun.buf = &semds;
e6f0bdd6 2076#endif
c2ab57d4 2077 getinfo = (cmd == GETALL);
9b89d93d
GB		 2078 if (Semctl(id, 0, IPC_STAT, semun) == -1)
2079 return -1;
6e21c824
LW		 2080 infosize = semds.sem_nsems * sizeof(short);
2081 /* "short" is technically wrong but much more portable
2082 than guessing about u_?short(_t)? */
c2ab57d4 2083 }
39398f3f 2084#else
cea2e8a9 2085 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
39398f3f 2086#endif
c2ab57d4 2087 break;
e5d73d77 2088#endif
fe14fcc3 2089#if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
e5d73d77 2090 default:
cea2e8a9 2091 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
e5d73d77 2092#endif
c2ab57d4
LW		 2093 }
2094
2095 if (infosize)
2096 {
2097 if (getinfo)
2098 {
93524f2b 2099 SvPV_force_nolen(astr);
a0d0e21e 2100 a = SvGROW(astr, infosize+1);
c2ab57d4
LW		 2101 }
2102 else
2103 {
93524f2b 2104 STRLEN len;
463ee0b2
LW		 2105 a = SvPV(astr, len);
2106 if (len != infosize)
cea2e8a9 2107 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
4ec43091
JH		 2108 PL_op_desc[optype],
2109 (unsigned long)len,
2110 (long)infosize);
c2ab57d4
LW		 2111 }
2112 }
2113 else
2114 {
c030ccd9 2115 IV i = SvIV(astr);
56431972 2116 a = INT2PTR(char *,i); /* ouch */
c2ab57d4 2117 }
748a9306 2118 SETERRNO(0,0);
c2ab57d4
LW		 2119 switch (optype)
2120 {
fe14fcc3 2121#ifdef HAS_MSG
79072805 2122 case OP_MSGCTL:
bee1dbe2 2123 ret = msgctl(id, cmd, (struct msqid_ds *)a);
c2ab57d4 2124 break;
e5d73d77 2125#endif
fe14fcc3 2126#ifdef HAS_SEM
bd89102f 2127 case OP_SEMCTL: {
39398f3f 2128#ifdef Semctl
bd89102f
AD		 2129 union semun unsemds;
2130
e6f0bdd6
GS		 2131#ifdef EXTRA_F_IN_SEMUN_BUF
2132 unsemds.buff = (struct semid_ds *)a;
2133#else
bd89102f 2134 unsemds.buf = (struct semid_ds *)a;
e6f0bdd6 2135#endif
bd89102f 2136 ret = Semctl(id, n, cmd, unsemds);
39398f3f 2137#else
cea2e8a9 2138 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
39398f3f 2139#endif
bd89102f 2140 }
c2ab57d4 2141 break;
e5d73d77 2142#endif
fe14fcc3 2143#ifdef HAS_SHM
79072805 2144 case OP_SHMCTL:
bee1dbe2 2145 ret = shmctl(id, cmd, (struct shmid_ds *)a);
c2ab57d4 2146 break;
e5d73d77 2147#endif
c2ab57d4
LW		 2148 }
2149 if (getinfo && ret >= 0) {
79072805
LW		 2150 SvCUR_set(astr, infosize);
2151 *SvEND(astr) = '\0';
a0d0e21e 2152 SvSETMAGIC(astr);
c2ab57d4
LW		 2153 }
2154 return ret;
2155}
2156
79072805 2157I32
864dbfa3 2158Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
c2ab57d4 2159{
fe14fcc3 2160#ifdef HAS_MSG
79072805 2161 SV *mstr;
93524f2b 2162 const char *mbuf;
6867be6d 2163 I32 msize, flags;
463ee0b2 2164 STRLEN len;
6867be6d 2165 const I32 id = SvIVx(*++mark);
890ce7af 2166 PERL_UNUSED_ARG(sp);
c2ab57d4 2167
79072805 2168 mstr = *++mark;
463ee0b2 2169 flags = SvIVx(*++mark);
93524f2b 2170 mbuf = SvPV_const(mstr, len);
463ee0b2 2171 if ((msize = len - sizeof(long)) < 0)
cea2e8a9 2172 Perl_croak(aTHX_ "Arg too short for msgsnd");
748a9306 2173 SETERRNO(0,0);
bee1dbe2 2174 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
e5d73d77 2175#else
cea2e8a9 2176 Perl_croak(aTHX_ "msgsnd not implemented");
e5d73d77 2177#endif
c2ab57d4
LW		 2178}
2179
79072805 2180I32
864dbfa3 2181Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
c2ab57d4 2182{
fe14fcc3 2183#ifdef HAS_MSG
79072805 2184 SV *mstr;
c2ab57d4
LW		 2185 char *mbuf;
2186 long mtype;
6867be6d 2187 I32 msize, flags, ret;
6867be6d 2188 const I32 id = SvIVx(*++mark);
890ce7af 2189 PERL_UNUSED_ARG(sp);
79072805 2190
79072805 2191 mstr = *++mark;
c2e66d9e
GS		 2192 /* suppress warning when reading into undef var --jhi */
2193 if (! SvOK(mstr))
2194 sv_setpvn(mstr, "", 0);
463ee0b2
LW		 2195 msize = SvIVx(*++mark);
2196 mtype = (long)SvIVx(*++mark);
2197 flags = SvIVx(*++mark);
93524f2b 2198 SvPV_force_nolen(mstr);
a0d0e21e 2199 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
a1d180c4 2200
748a9306 2201 SETERRNO(0,0);
bee1dbe2 2202 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
c2ab57d4 2203 if (ret >= 0) {
79072805
LW		 2204 SvCUR_set(mstr, sizeof(long)+ret);
2205 *SvEND(mstr) = '\0';
41d6edb2
JH		 2206#ifndef INCOMPLETE_TAINTS
2207 /* who knows who has been playing with this message? */
2208 SvTAINTED_on(mstr);
2209#endif
c2ab57d4
LW		 2210 }
2211 return ret;
e5d73d77 2212#else
cea2e8a9 2213 Perl_croak(aTHX_ "msgrcv not implemented");
e5d73d77 2214#endif
c2ab57d4
LW		 2215}
2216
79072805 2217I32
864dbfa3 2218Perl_do_semop(pTHX_ SV **mark, SV **sp)
c2ab57d4 2219{
fe14fcc3 2220#ifdef HAS_SEM
79072805 2221 SV *opstr;
93524f2b 2222 const char *opbuf;
463ee0b2 2223 STRLEN opsize;
6867be6d 2224 const I32 id = SvIVx(*++mark);
890ce7af 2225 PERL_UNUSED_ARG(sp);
c2ab57d4 2226
79072805 2227 opstr = *++mark;
93524f2b 2228 opbuf = SvPV_const(opstr, opsize);
248ff010
NC		 2229 if (opsize < 3 * SHORTSIZE
2230 || (opsize % (3 * SHORTSIZE))) {
93189314 2231 SETERRNO(EINVAL,LIB_INVARG);
c2ab57d4
LW		 2232 return -1;
2233 }
748a9306 2234 SETERRNO(0,0);
248ff010
NC		 2235 /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
2236 {
6867be6d 2237 const int nsops = opsize / (3 * sizeof (short));
248ff010
NC		 2238 int i = nsops;
2239 short *ops = (short *) opbuf;
2240 short *o = ops;
2241 struct sembuf *temps, *t;
2242 I32 result;
2243
a02a5408 2244 Newx (temps, nsops, struct sembuf);
248ff010
NC		 2245 t = temps;
2246 while (i--) {
2247 t->sem_num = *o++;
2248 t->sem_op = *o++;
2249 t->sem_flg = *o++;
2250 t++;
2251 }
2252 result = semop(id, temps, nsops);
2253 t = temps;
2254 o = ops;
2255 i = nsops;
2256 while (i--) {
2257 *o++ = t->sem_num;
2258 *o++ = t->sem_op;
2259 *o++ = t->sem_flg;
2260 t++;
2261 }
2262 Safefree(temps);
2263 return result;
2264 }
e5d73d77 2265#else
cea2e8a9 2266 Perl_croak(aTHX_ "semop not implemented");
e5d73d77 2267#endif
c2ab57d4
LW		 2268}
2269
79072805 2270I32
864dbfa3 2271Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
c2ab57d4 2272{
fe14fcc3 2273#ifdef HAS_SHM
79072805 2274 SV *mstr;
4373e329 2275 char *shm;
6867be6d 2276 I32 mpos, msize;
c2ab57d4 2277 struct shmid_ds shmds;
6867be6d 2278 const I32 id = SvIVx(*++mark);
890ce7af 2279 PERL_UNUSED_ARG(sp);
c2ab57d4 2280
79072805 2281 mstr = *++mark;
463ee0b2
LW		 2282 mpos = SvIVx(*++mark);
2283 msize = SvIVx(*++mark);
748a9306 2284 SETERRNO(0,0);
c2ab57d4
LW		 2285 if (shmctl(id, IPC_STAT, &shmds) == -1)
2286 return -1;
2287 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
93189314 2288 SETERRNO(EFAULT,SS_ACCVIO); /* can't do as caller requested */
c2ab57d4
LW		 2289 return -1;
2290 }
8ac85365 2291 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
c2ab57d4
LW		 2292 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2293 return -1;
79072805 2294 if (optype == OP_SHMREAD) {
4373e329 2295 const char *mbuf;
9f538c04
GS		 2296 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2297 if (! SvOK(mstr))
2298 sv_setpvn(mstr, "", 0);
93524f2b 2299 SvPV_force_nolen(mstr);
a0d0e21e
LW		 2300 mbuf = SvGROW(mstr, msize+1);
2301
bee1dbe2 2302 Copy(shm + mpos, mbuf, msize, char);
79072805
LW		 2303 SvCUR_set(mstr, msize);
2304 *SvEND(mstr) = '\0';
a0d0e21e 2305 SvSETMAGIC(mstr);
d929ce6f
JH		 2306#ifndef INCOMPLETE_TAINTS
2307 /* who knows who has been playing with this shared memory? */
2308 SvTAINTED_on(mstr);
2309#endif
c2ab57d4
LW		 2310 }
2311 else {
79072805 2312 I32 n;
93524f2b 2313 STRLEN len;
c2ab57d4 2314
93524f2b 2315 const char *mbuf = SvPV_const(mstr, len);
463ee0b2 2316 if ((n = len) > msize)
c2ab57d4 2317 n = msize;
bee1dbe2 2318 Copy(mbuf, shm + mpos, n, char);
c2ab57d4 2319 if (n < msize)
bee1dbe2 2320 memzero(shm + mpos + n, msize - n);
c2ab57d4
LW		 2321 }
2322 return shmdt(shm);
e5d73d77 2323#else
cea2e8a9 2324 Perl_croak(aTHX_ "shm I/O not implemented");
e5d73d77 2325#endif
c2ab57d4
LW		 2326}
2327
fe14fcc3 2328#endif /* SYSV IPC */
4e35701f 2329
0d44d22b 2330/*
ccfc67b7
JH		 2331=head1 IO Functions
2332
0d44d22b
NC		 2333=for apidoc start_glob
2334
2335Function called by C<do_readline> to spawn a glob (or do the glob inside
2336perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
210b36aa 2337this glob starter is only used by miniperl during the build process.
0d44d22b 2338Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
fab3f3a7 2339
0d44d22b
NC		 2340=cut
2341*/
2342
2343PerlIO *
2344Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2345{
27da23d5 2346 dVAR;
2d03de9c 2347 SV * const tmpcmd = NEWSV(55, 0);
0d44d22b
NC		 2348 PerlIO *fp;
2349 ENTER;
2350 SAVEFREESV(tmpcmd);
2351#ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2352 /* since spawning off a process is a real performance hit */
2353 {
2354#include <descrip.h>
2355#include <lib$routines.h>
2356#include <nam.h>
2357#include <rmsdef.h>
2358 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2359 char vmsspec[NAM$C_MAXRSS+1];
890ce7af
AL		 2360 char * const rstr = rslt + sizeof(unsigned short int);
2361 char *begin, *end, *cp;
0d44d22b
NC		 2362 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2363 PerlIO *tmpfp;
2364 STRLEN i;
2365 struct dsc$descriptor_s wilddsc
2366 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2367 struct dsc$descriptor_vs rsdsc
2368 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2369 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2370
2371 /* We could find out if there's an explicit dev/dir or version
2372 by peeking into lib$find_file's internal context at
2373 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2374 but that's unsupported, so I don't want to do it now and
2375 have it bite someone in the future. */
0d44d22b
NC		 2376 cp = SvPV(tmpglob,i);
2377 for (; i; i--) {
2378 if (cp[i] == ';') hasver = 1;
2379 if (cp[i] == '.') {
2380 if (sts) hasver = 1;
2381 else sts = 1;
2382 }
2383 if (cp[i] == '/') {
2384 hasdir = isunix = 1;
2385 break;
2386 }
2387 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2388 hasdir = 1;
2389 break;
2390 }
2391 }
a15cef0c 2392 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
0d44d22b 2393 Stat_t st;
95a20fc0 2394 if (!PerlLIO_stat(SvPVX_const(tmpglob),&st) && S_ISDIR(st.st_mode))
94a11853
CB		 2395 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2396 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
0d44d22b 2397 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
a3987cb8
JH		 2398 for (cp=wilddsc.dsc$a_pointer; ok && cp && *cp; cp++)
2399 if (*cp == '?') *cp = '%'; /* VMS style single-char wildcard */
0d44d22b
NC		 2400 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2401 &dfltdsc,NULL,NULL,NULL))&1)) {
3ce6b0cb
CB		 2402 /* with varying string, 1st word of buffer contains result length */
2403 end = rstr + *((unsigned short int*)rslt);
2404 if (!hasver) while (*end != ';' && end > rstr) end--;
0d44d22b
NC		 2405 *(end++) = '\n'; *end = '\0';
2406 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2407 if (hasdir) {
2408 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2409 begin = rstr;
2410 }
2411 else {
2412 begin = end;
2413 while (*(--begin) != ']' && *begin != '>') ;
2414 ++begin;
2415 }
2416 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2417 }
2418 if (cxt) (void)lib$find_file_end(&cxt);
2419 if (ok && sts != RMS$_NMF &&
93189314 2420 sts != RMS$_DNF && sts != RMS_FNF) ok = 0;
0d44d22b
NC		 2421 if (!ok) {
2422 if (!(sts & 1)) {
2423 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2424 }
2425 PerlIO_close(tmpfp);
2426 fp = NULL;
2427 }
2428 else {
2429 PerlIO_rewind(tmpfp);
2430 IoTYPE(io) = IoTYPE_RDONLY;
2431 IoIFP(io) = fp = tmpfp;
2432 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2433 }
2434 }
2435 }
2436#else /* !VMS */
2437#ifdef MACOS_TRADITIONAL
2438 sv_setpv(tmpcmd, "glob ");
2439 sv_catsv(tmpcmd, tmpglob);
2440 sv_catpv(tmpcmd, " |");
2441#else
2442#ifdef DOSISH
2443#ifdef OS2
2444 sv_setpv(tmpcmd, "for a in ");
2445 sv_catsv(tmpcmd, tmpglob);
2446 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2447#else
2448#ifdef DJGPP
2449 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2450 sv_catsv(tmpcmd, tmpglob);
2451#else
2452 sv_setpv(tmpcmd, "perlglob ");
2453 sv_catsv(tmpcmd, tmpglob);
2454 sv_catpv(tmpcmd, " |");
2455#endif /* !DJGPP */
2456#endif /* !OS2 */
2457#else /* !DOSISH */
2458#if defined(CSH)
2459 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2460 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2461 sv_catsv(tmpcmd, tmpglob);
2462 sv_catpv(tmpcmd, "' 2>/dev/null |");
2463#else
2464 sv_setpv(tmpcmd, "echo ");
2465 sv_catsv(tmpcmd, tmpglob);
2466#if 'z' - 'a' == 25
2467 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2468#else
2469 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2470#endif
2471#endif /* !CSH */
2472#endif /* !DOSISH */
2473#endif /* MACOS_TRADITIONAL */
93524f2b 2474 (void)do_open(PL_last_in_gv, (char*)SvPVX_const(tmpcmd), SvCUR(tmpcmd),
0d44d22b
NC		 2475 FALSE, O_RDONLY, 0, Nullfp);
2476 fp = IoIFP(io);
2477#endif /* !VMS */
2478 LEAVE;
2479 return fp;
2480}
66610fdd
RGS		 2481
2482/*
2483 * Local variables:
2484 * c-indentation-style: bsd
2485 * c-basic-offset: 4
2486 * indent-tabs-mode: t
2487 * End:
2488 *
37442d52
RGS		 2489 * ex: set ts=8 sts=4 sw=4 noet:
2490 */
Unnamed repository; edit this file 'description' to name the repository.