Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* doio.c |
a687059c | 2 | * |
4eb8286e | 3 | * Copyright (c) 1991-1999, Larry Wall |
a687059c | 4 | * |
6e21c824 LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
a687059c | 7 | * |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "Far below them they saw the white waters pour into a foaming bowl, and | |
12 | * then swirl darkly about a deep oval basin in the rocks, until they found | |
13 | * their way out again through a narrow gate, and flowed away, fuming and | |
14 | * chattering, into calmer and more level reaches." | |
a687059c LW |
15 | */ |
16 | ||
17 | #include "EXTERN.h" | |
864dbfa3 | 18 | #define PERL_IN_DOIO_C |
a687059c LW |
19 | #include "perl.h" |
20 | ||
fe14fcc3 | 21 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
aec308ec | 22 | #ifndef HAS_SEM |
c2ab57d4 | 23 | #include <sys/ipc.h> |
aec308ec | 24 | #endif |
fe14fcc3 | 25 | #ifdef HAS_MSG |
c2ab57d4 | 26 | #include <sys/msg.h> |
e5d73d77 | 27 | #endif |
fe14fcc3 | 28 | #ifdef HAS_SHM |
c2ab57d4 | 29 | #include <sys/shm.h> |
a0d0e21e | 30 | # ifndef HAS_SHMAT_PROTOTYPE |
20ce7b12 | 31 | extern Shmat_t shmat (int, char *, int); |
a0d0e21e | 32 | # endif |
c2ab57d4 | 33 | #endif |
e5d73d77 | 34 | #endif |
c2ab57d4 | 35 | |
663a0e37 | 36 | #ifdef I_UTIME |
3730b96e | 37 | # if defined(_MSC_VER) || defined(__MINGW32__) |
3fe9a6f1 | 38 | # include <sys/utime.h> |
39 | # else | |
40 | # include <utime.h> | |
41 | # endif | |
663a0e37 | 42 | #endif |
85aff577 | 43 | |
ff8e2863 LW |
44 | #ifdef I_FCNTL |
45 | #include <fcntl.h> | |
46 | #endif | |
fe14fcc3 LW |
47 | #ifdef I_SYS_FILE |
48 | #include <sys/file.h> | |
49 | #endif | |
85aff577 CS |
50 | #ifdef O_EXCL |
51 | # define OPEN_EXCL O_EXCL | |
52 | #else | |
53 | # define OPEN_EXCL 0 | |
54 | #endif | |
a687059c | 55 | |
76121258 | 56 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
57 | #include <signal.h> | |
58 | #endif | |
59 | ||
60 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ | |
61 | #ifdef I_UNISTD | |
62 | # include <unistd.h> | |
63 | #endif | |
64 | ||
232e078e AD |
65 | #if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */ |
66 | # include <sys/socket.h> | |
29209bc5 | 67 | # if defined(USE_SOCKS) && defined(I_SOCKS) |
86959918 JH |
68 | # include <socks.h> |
69 | # endif | |
70 | # ifdef I_NETBSD | |
71 | # include <netdb.h> | |
72 | # endif | |
232e078e AD |
73 | # ifndef ENOTSOCK |
74 | # ifdef I_NET_ERRNO | |
75 | # include <net/errno.h> | |
76 | # endif | |
77 | # endif | |
78 | #endif | |
79 | ||
d574b85e CS |
80 | /* Put this after #includes because <unistd.h> defines _XOPEN_*. */ |
81 | #ifndef Sock_size_t | |
137443ea | 82 | # if _XOPEN_VERSION >= 5 || defined(_XOPEN_SOURCE_EXTENDED) || defined(__GLIBC__) |
d574b85e CS |
83 | # define Sock_size_t Size_t |
84 | # else | |
85 | # define Sock_size_t int | |
86 | # endif | |
87 | #endif | |
88 | ||
a687059c | 89 | bool |
6170680b IZ |
90 | Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw, |
91 | int rawmode, int rawperm, PerlIO *supplied_fp) | |
92 | { | |
93 | return do_open9(gv, name, len, as_raw, rawmode, rawperm, | |
94 | supplied_fp, Nullsv, 0); | |
95 | } | |
96 | ||
97 | bool | |
98 | Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw, | |
99 | int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs, | |
100 | I32 num_svs) | |
a687059c | 101 | { |
a0d0e21e | 102 | register IO *io = GvIOn(gv); |
760ac839 LW |
103 | PerlIO *saveifp = Nullfp; |
104 | PerlIO *saveofp = Nullfp; | |
6e21c824 | 105 | char savetype = ' '; |
c07a80fd | 106 | int writing = 0; |
760ac839 | 107 | PerlIO *fp; |
c07a80fd | 108 | int fd; |
109 | int result; | |
3500f679 | 110 | bool was_fdopen = FALSE; |
a687059c | 111 | |
3280af22 | 112 | PL_forkprocess = 1; /* assume true if no fork */ |
c07a80fd | 113 | |
a0d0e21e | 114 | if (IoIFP(io)) { |
760ac839 | 115 | fd = PerlIO_fileno(IoIFP(io)); |
8990e307 | 116 | if (IoTYPE(io) == '-') |
c2ab57d4 | 117 | result = 0; |
3280af22 | 118 | else if (fd <= PL_maxsysfd) { |
8990e307 LW |
119 | saveifp = IoIFP(io); |
120 | saveofp = IoOFP(io); | |
121 | savetype = IoTYPE(io); | |
6e21c824 LW |
122 | result = 0; |
123 | } | |
8990e307 | 124 | else if (IoTYPE(io) == '|') |
3028581b | 125 | result = PerlProc_pclose(IoIFP(io)); |
8990e307 LW |
126 | else if (IoIFP(io) != IoOFP(io)) { |
127 | if (IoOFP(io)) { | |
760ac839 | 128 | result = PerlIO_close(IoOFP(io)); |
6170680b | 129 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ |
c2ab57d4 LW |
130 | } |
131 | else | |
760ac839 | 132 | result = PerlIO_close(IoIFP(io)); |
a687059c | 133 | } |
a687059c | 134 | else |
760ac839 | 135 | result = PerlIO_close(IoIFP(io)); |
3280af22 | 136 | if (result == EOF && fd > PL_maxsysfd) |
bf49b057 | 137 | PerlIO_printf(Perl_error_log, |
6170680b IZ |
138 | "Warning: unable to close filehandle %s properly.\n", |
139 | GvENAME(gv)); | |
8990e307 | 140 | IoOFP(io) = IoIFP(io) = Nullfp; |
a687059c | 141 | } |
c07a80fd | 142 | |
143 | if (as_raw) { | |
09458382 | 144 | #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE) |
5ff3f7a4 GS |
145 | rawmode |= O_LARGEFILE; |
146 | #endif | |
147 | ||
9d116dd7 JH |
148 | #ifndef O_ACCMODE |
149 | #define O_ACCMODE 3 /* Assume traditional implementation */ | |
150 | #endif | |
5ff3f7a4 | 151 | |
9d116dd7 JH |
152 | switch (result = rawmode & O_ACCMODE) { |
153 | case O_RDONLY: | |
154 | IoTYPE(io) = '<'; | |
155 | break; | |
156 | case O_WRONLY: | |
157 | IoTYPE(io) = '>'; | |
158 | break; | |
159 | case O_RDWR: | |
160 | default: | |
161 | IoTYPE(io) = '+'; | |
162 | break; | |
163 | } | |
164 | ||
c07a80fd | 165 | writing = (result > 0); |
3028581b | 166 | fd = PerlLIO_open3(name, rawmode, rawperm); |
9d116dd7 | 167 | |
c07a80fd | 168 | if (fd == -1) |
169 | fp = NULL; | |
170 | else { | |
360e5741 | 171 | char *fpmode; |
9d116dd7 | 172 | if (result == O_RDONLY) |
360e5741 CS |
173 | fpmode = "r"; |
174 | #ifdef O_APPEND | |
175 | else if (rawmode & O_APPEND) | |
9d116dd7 | 176 | fpmode = (result == O_WRONLY) ? "a" : "a+"; |
360e5741 CS |
177 | #endif |
178 | else | |
9d116dd7 | 179 | fpmode = (result == O_WRONLY) ? "w" : "r+"; |
360e5741 | 180 | fp = PerlIO_fdopen(fd, fpmode); |
c07a80fd | 181 | if (!fp) |
3028581b | 182 | PerlLIO_close(fd); |
c07a80fd | 183 | } |
a687059c | 184 | } |
c07a80fd | 185 | else { |
186 | char *myname; | |
6170680b IZ |
187 | char *type = name; |
188 | char *otype = name; | |
189 | STRLEN tlen; | |
190 | STRLEN otlen = len; | |
c07a80fd | 191 | char mode[3]; /* stdio file mode ("r\0" or "r+\0") */ |
192 | int dodup; | |
193 | ||
6170680b IZ |
194 | if (num_svs) { |
195 | type = name; | |
196 | name = SvPV(svs, tlen) ; | |
197 | len = (I32)tlen; | |
198 | } | |
199 | ||
200 | tlen = otlen; | |
c07a80fd | 201 | myname = savepvn(name, len); |
202 | SAVEFREEPV(myname); | |
203 | name = myname; | |
6170680b IZ |
204 | if (!num_svs) |
205 | while (tlen && isSPACE(type[tlen-1])) | |
206 | type[--tlen] = '\0'; | |
c07a80fd | 207 | |
208 | mode[0] = mode[1] = mode[2] = '\0'; | |
6170680b IZ |
209 | IoTYPE(io) = *type; |
210 | if (*type == '+' && tlen > 1 && type[tlen-1] != '|') { /* scary */ | |
211 | mode[1] = *type++; | |
212 | --tlen; | |
c07a80fd | 213 | writing = 1; |
a687059c | 214 | } |
c07a80fd | 215 | |
6170680b IZ |
216 | if (*type == '|') { |
217 | if (num_svs && (tlen != 2 || type[1] != '-')) { | |
218 | unknown_desr: | |
219 | Perl_croak(aTHX_ "Unknown open() mode '%.*s'", otlen, otype); | |
220 | } | |
c07a80fd | 221 | /*SUPPRESS 530*/ |
6170680b IZ |
222 | for (type++; isSPACE(*type); type++) ; |
223 | if (!num_svs) | |
224 | name = type; | |
06eaf0bc GS |
225 | if (*name == '\0') { /* command is missing 19990114 */ |
226 | dTHR; | |
227 | if (ckWARN(WARN_PIPE)) | |
cea2e8a9 | 228 | Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open"); |
06eaf0bc GS |
229 | errno = EPIPE; |
230 | goto say_false; | |
231 | } | |
6170680b | 232 | if (strNE(name,"-") || num_svs) |
c07a80fd | 233 | TAINT_ENV(); |
234 | TAINT_PROPER("piped open"); | |
7b8d334a | 235 | if (name[strlen(name)-1] == '|') { |
d008e5eb | 236 | dTHR; |
7b8d334a | 237 | name[strlen(name)-1] = '\0' ; |
599cee73 | 238 | if (ckWARN(WARN_PIPE)) |
cea2e8a9 | 239 | Perl_warner(aTHX_ WARN_PIPE, "Can't do bidirectional pipe"); |
7b8d334a | 240 | } |
3028581b | 241 | fp = PerlProc_popen(name,"w"); |
c07a80fd | 242 | writing = 1; |
243 | } | |
6170680b | 244 | else if (*type == '>') { |
c07a80fd | 245 | TAINT_PROPER("open"); |
6170680b IZ |
246 | type++; |
247 | if (*type == '>') { | |
c07a80fd | 248 | mode[0] = IoTYPE(io) = 'a'; |
6170680b IZ |
249 | type++; |
250 | tlen--; | |
a0d0e21e | 251 | } |
c07a80fd | 252 | else |
253 | mode[0] = 'w'; | |
254 | writing = 1; | |
255 | ||
6170680b IZ |
256 | if (num_svs && tlen != 1) |
257 | goto unknown_desr; | |
258 | if (*type == '&') { | |
259 | name = type; | |
c07a80fd | 260 | duplicity: |
261 | dodup = 1; | |
262 | name++; | |
263 | if (*name == '=') { | |
264 | dodup = 0; | |
a0d0e21e | 265 | name++; |
c07a80fd | 266 | } |
267 | if (!*name && supplied_fp) | |
268 | fp = supplied_fp; | |
a0d0e21e | 269 | else { |
c07a80fd | 270 | /*SUPPRESS 530*/ |
271 | for (; isSPACE(*name); name++) ; | |
272 | if (isDIGIT(*name)) | |
273 | fd = atoi(name); | |
274 | else { | |
275 | IO* thatio; | |
276 | gv = gv_fetchpv(name,FALSE,SVt_PVIO); | |
277 | thatio = GvIO(gv); | |
278 | if (!thatio) { | |
6e21c824 | 279 | #ifdef EINVAL |
c07a80fd | 280 | SETERRNO(EINVAL,SS$_IVCHAN); |
6e21c824 | 281 | #endif |
c07a80fd | 282 | goto say_false; |
283 | } | |
284 | if (IoIFP(thatio)) { | |
54195c32 | 285 | PerlIO *fp = IoIFP(thatio); |
7211d486 JH |
286 | /* Flush stdio buffer before dup. --mjd |
287 | * Unfortunately SEEK_CURing 0 seems to | |
288 | * be optimized away on most platforms; | |
289 | * only Solaris and Linux seem to flush | |
290 | * on that. --jhi */ | |
54195c32 | 291 | PerlIO_seek(fp, 0, SEEK_CUR); |
7211d486 JH |
292 | /* On the other hand, do all platforms |
293 | * take gracefully to flushing a read-only | |
294 | * filehandle? Perhaps we should do | |
295 | * fsetpos(src)+fgetpos(dst)? --nik */ | |
296 | PerlIO_flush(fp); | |
54195c32 | 297 | fd = PerlIO_fileno(fp); |
c07a80fd | 298 | if (IoTYPE(thatio) == 's') |
299 | IoTYPE(io) = 's'; | |
300 | } | |
301 | else | |
302 | fd = -1; | |
a0d0e21e | 303 | } |
fec02dd3 | 304 | if (dodup) |
3028581b | 305 | fd = PerlLIO_dup(fd); |
3500f679 RS |
306 | else |
307 | was_fdopen = TRUE; | |
760ac839 | 308 | if (!(fp = PerlIO_fdopen(fd,mode))) { |
c07a80fd | 309 | if (dodup) |
3028581b | 310 | PerlLIO_close(fd); |
517844ec | 311 | } |
c07a80fd | 312 | } |
bf38876a | 313 | } |
c07a80fd | 314 | else { |
315 | /*SUPPRESS 530*/ | |
6170680b IZ |
316 | for (; isSPACE(*type); type++) ; |
317 | if (strEQ(type,"-")) { | |
760ac839 | 318 | fp = PerlIO_stdout(); |
c07a80fd | 319 | IoTYPE(io) = '-'; |
320 | } | |
321 | else { | |
6170680b | 322 | fp = PerlIO_open((num_svs ? name : type), mode); |
c07a80fd | 323 | } |
bf38876a LW |
324 | } |
325 | } | |
6170680b IZ |
326 | else if (*type == '<') { |
327 | if (num_svs && tlen != 1) | |
328 | goto unknown_desr; | |
c07a80fd | 329 | /*SUPPRESS 530*/ |
6170680b | 330 | for (type++; isSPACE(*type); type++) ; |
bf38876a | 331 | mode[0] = 'r'; |
6170680b IZ |
332 | if (*type == '&') { |
333 | name = type; | |
bf38876a | 334 | goto duplicity; |
6170680b IZ |
335 | } |
336 | if (strEQ(type,"-")) { | |
760ac839 | 337 | fp = PerlIO_stdin(); |
8990e307 | 338 | IoTYPE(io) = '-'; |
a687059c | 339 | } |
bf38876a | 340 | else |
6170680b | 341 | fp = PerlIO_open((num_svs ? name : type), mode); |
a687059c | 342 | } |
6170680b IZ |
343 | else if (tlen > 1 && type[tlen-1] == '|') { |
344 | if (num_svs) { | |
345 | if (tlen != 2 || type[0] != '-') | |
346 | goto unknown_desr; | |
347 | } | |
348 | else { | |
349 | type[--tlen] = '\0'; | |
350 | while (tlen && isSPACE(type[tlen-1])) | |
351 | type[--tlen] = '\0'; | |
352 | /*SUPPRESS 530*/ | |
353 | for (; isSPACE(*type); type++) ; | |
354 | name = type; | |
355 | } | |
06eaf0bc GS |
356 | if (*name == '\0') { /* command is missing 19990114 */ |
357 | dTHR; | |
358 | if (ckWARN(WARN_PIPE)) | |
cea2e8a9 | 359 | Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open"); |
06eaf0bc GS |
360 | errno = EPIPE; |
361 | goto say_false; | |
362 | } | |
6170680b | 363 | if (strNE(name,"-") || num_svs) |
79072805 LW |
364 | TAINT_ENV(); |
365 | TAINT_PROPER("piped open"); | |
3028581b | 366 | fp = PerlProc_popen(name,"r"); |
8990e307 | 367 | IoTYPE(io) = '|'; |
a687059c LW |
368 | } |
369 | else { | |
6170680b IZ |
370 | if (num_svs) |
371 | goto unknown_desr; | |
372 | name = type; | |
8990e307 | 373 | IoTYPE(io) = '<'; |
99b89507 LW |
374 | /*SUPPRESS 530*/ |
375 | for (; isSPACE(*name); name++) ; | |
a687059c | 376 | if (strEQ(name,"-")) { |
760ac839 | 377 | fp = PerlIO_stdin(); |
8990e307 | 378 | IoTYPE(io) = '-'; |
a687059c LW |
379 | } |
380 | else | |
760ac839 | 381 | fp = PerlIO_open(name,"r"); |
a687059c LW |
382 | } |
383 | } | |
bee1dbe2 | 384 | if (!fp) { |
d008e5eb | 385 | dTHR; |
599cee73 | 386 | if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == '<' && strchr(name, '\n')) |
cea2e8a9 | 387 | Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open"); |
6e21c824 | 388 | goto say_false; |
bee1dbe2 | 389 | } |
8990e307 LW |
390 | if (IoTYPE(io) && |
391 | IoTYPE(io) != '|' && IoTYPE(io) != '-') { | |
96827780 | 392 | dTHR; |
3280af22 | 393 | if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) { |
760ac839 | 394 | (void)PerlIO_close(fp); |
6e21c824 | 395 | goto say_false; |
a687059c | 396 | } |
3280af22 | 397 | if (S_ISSOCK(PL_statbuf.st_mode)) |
8990e307 | 398 | IoTYPE(io) = 's'; /* in case a socket was passed in to us */ |
99b89507 LW |
399 | #ifdef HAS_SOCKET |
400 | else if ( | |
c623bd54 | 401 | #ifdef S_IFMT |
3280af22 | 402 | !(PL_statbuf.st_mode & S_IFMT) |
99b89507 | 403 | #else |
b28d0864 | 404 | !PL_statbuf.st_mode |
99b89507 LW |
405 | #endif |
406 | ) { | |
96827780 MB |
407 | char tmpbuf[256]; |
408 | Sock_size_t buflen = sizeof tmpbuf; | |
3028581b | 409 | if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf, |
d574b85e CS |
410 | &buflen) >= 0 |
411 | || errno != ENOTSOCK) | |
8990e307 | 412 | IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */ |
99b89507 LW |
413 | /* but some return 0 for streams too, sigh */ |
414 | } | |
bf38876a | 415 | #endif |
a687059c | 416 | } |
6e21c824 | 417 | if (saveifp) { /* must use old fp? */ |
760ac839 | 418 | fd = PerlIO_fileno(saveifp); |
6e21c824 | 419 | if (saveofp) { |
760ac839 | 420 | PerlIO_flush(saveofp); /* emulate PerlIO_close() */ |
6e21c824 | 421 | if (saveofp != saveifp) { /* was a socket? */ |
760ac839 | 422 | PerlIO_close(saveofp); |
99b89507 LW |
423 | if (fd > 2) |
424 | Safefree(saveofp); | |
6e21c824 LW |
425 | } |
426 | } | |
760ac839 | 427 | if (fd != PerlIO_fileno(fp)) { |
d8a83dd3 | 428 | Pid_t pid; |
79072805 | 429 | SV *sv; |
bee1dbe2 | 430 | |
3028581b | 431 | PerlLIO_dup2(PerlIO_fileno(fp), fd); |
3280af22 | 432 | sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE); |
a0d0e21e | 433 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 LW |
434 | pid = SvIVX(sv); |
435 | SvIVX(sv) = 0; | |
3280af22 | 436 | sv = *av_fetch(PL_fdpid,fd,TRUE); |
a0d0e21e | 437 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 | 438 | SvIVX(sv) = pid; |
3500f679 RS |
439 | if (!was_fdopen) |
440 | PerlIO_close(fp); | |
bee1dbe2 | 441 | |
6e21c824 LW |
442 | } |
443 | fp = saveifp; | |
760ac839 | 444 | PerlIO_clearerr(fp); |
6e21c824 | 445 | } |
a0d0e21e | 446 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
a8710ca1 GS |
447 | { |
448 | int save_errno = errno; | |
449 | fd = PerlIO_fileno(fp); | |
450 | fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */ | |
451 | errno = save_errno; | |
452 | } | |
1462b684 | 453 | #endif |
8990e307 | 454 | IoIFP(io) = fp; |
bf38876a | 455 | if (writing) { |
96827780 | 456 | dTHR; |
8990e307 | 457 | if (IoTYPE(io) == 's' |
3280af22 | 458 | || (IoTYPE(io) == '>' && S_ISCHR(PL_statbuf.st_mode)) ) { |
760ac839 LW |
459 | if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) { |
460 | PerlIO_close(fp); | |
8990e307 | 461 | IoIFP(io) = Nullfp; |
6e21c824 | 462 | goto say_false; |
fe14fcc3 | 463 | } |
1462b684 LW |
464 | } |
465 | else | |
8990e307 | 466 | IoOFP(io) = fp; |
bf38876a | 467 | } |
a687059c | 468 | return TRUE; |
6e21c824 LW |
469 | |
470 | say_false: | |
8990e307 LW |
471 | IoIFP(io) = saveifp; |
472 | IoOFP(io) = saveofp; | |
473 | IoTYPE(io) = savetype; | |
6e21c824 | 474 | return FALSE; |
a687059c LW |
475 | } |
476 | ||
760ac839 | 477 | PerlIO * |
864dbfa3 | 478 | Perl_nextargv(pTHX_ register GV *gv) |
a687059c | 479 | { |
79072805 | 480 | register SV *sv; |
99b89507 | 481 | #ifndef FLEXFILENAMES |
c623bd54 LW |
482 | int filedev; |
483 | int fileino; | |
99b89507 | 484 | #endif |
761237fe JB |
485 | Uid_t fileuid; |
486 | Gid_t filegid; | |
fe14fcc3 | 487 | |
3280af22 NIS |
488 | if (!PL_argvoutgv) |
489 | PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO); | |
490 | if (PL_filemode & (S_ISUID|S_ISGID)) { | |
491 | PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */ | |
fe14fcc3 | 492 | #ifdef HAS_FCHMOD |
3280af22 | 493 | (void)fchmod(PL_lastfd,PL_filemode); |
fe14fcc3 | 494 | #else |
b28d0864 | 495 | (void)PerlLIO_chmod(PL_oldname,PL_filemode); |
fe14fcc3 LW |
496 | #endif |
497 | } | |
3280af22 | 498 | PL_filemode = 0; |
79072805 | 499 | while (av_len(GvAV(gv)) >= 0) { |
11343788 | 500 | dTHR; |
85aff577 | 501 | STRLEN oldlen; |
79072805 | 502 | sv = av_shift(GvAV(gv)); |
8990e307 | 503 | SAVEFREESV(sv); |
79072805 LW |
504 | sv_setsv(GvSV(gv),sv); |
505 | SvSETMAGIC(GvSV(gv)); | |
3280af22 | 506 | PL_oldname = SvPVx(GvSV(gv), oldlen); |
9d116dd7 | 507 | if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) { |
3280af22 | 508 | if (PL_inplace) { |
79072805 | 509 | TAINT_PROPER("inplace open"); |
3280af22 | 510 | if (oldlen == 1 && *PL_oldname == '-') { |
4633a7c4 | 511 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a0d0e21e | 512 | return IoIFP(GvIOp(gv)); |
c623bd54 | 513 | } |
99b89507 | 514 | #ifndef FLEXFILENAMES |
b28d0864 NIS |
515 | filedev = PL_statbuf.st_dev; |
516 | fileino = PL_statbuf.st_ino; | |
99b89507 | 517 | #endif |
3280af22 NIS |
518 | PL_filemode = PL_statbuf.st_mode; |
519 | fileuid = PL_statbuf.st_uid; | |
520 | filegid = PL_statbuf.st_gid; | |
521 | if (!S_ISREG(PL_filemode)) { | |
0453d815 PM |
522 | if (ckWARN_d(WARN_INPLACE)) |
523 | Perl_warner(aTHX_ WARN_INPLACE, | |
524 | "Can't do inplace edit: %s is not a regular file", | |
525 | PL_oldname ); | |
79072805 | 526 | do_close(gv,FALSE); |
c623bd54 LW |
527 | continue; |
528 | } | |
3280af22 NIS |
529 | if (*PL_inplace) { |
530 | char *star = strchr(PL_inplace, '*'); | |
2d259d92 | 531 | if (star) { |
3280af22 | 532 | char *begin = PL_inplace; |
2d259d92 CK |
533 | sv_setpvn(sv, "", 0); |
534 | do { | |
535 | sv_catpvn(sv, begin, star - begin); | |
3280af22 | 536 | sv_catpvn(sv, PL_oldname, oldlen); |
2d259d92 CK |
537 | begin = ++star; |
538 | } while ((star = strchr(begin, '*'))); | |
3d66d7bb GS |
539 | if (*begin) |
540 | sv_catpv(sv,begin); | |
2d259d92 CK |
541 | } |
542 | else { | |
3280af22 | 543 | sv_catpv(sv,PL_inplace); |
2d259d92 | 544 | } |
c623bd54 | 545 | #ifndef FLEXFILENAMES |
b28d0864 NIS |
546 | if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0 |
547 | && PL_statbuf.st_dev == filedev | |
548 | && PL_statbuf.st_ino == fileino | |
39e571d4 LM |
549 | #ifdef DJGPP |
550 | || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0 | |
551 | #endif | |
f248d071 GS |
552 | ) |
553 | { | |
554 | if (ckWARN_d(WARN_INPLACE)) | |
555 | Perl_warner(aTHX_ WARN_INPLACE, | |
556 | "Can't do inplace edit: %s would not be unique", | |
557 | SvPVX(sv)); | |
79072805 | 558 | do_close(gv,FALSE); |
c623bd54 LW |
559 | continue; |
560 | } | |
561 | #endif | |
fe14fcc3 | 562 | #ifdef HAS_RENAME |
2c2d71f5 | 563 | #if !defined(DOSISH) && !defined(CYGWIN) |
3280af22 | 564 | if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) { |
0453d815 PM |
565 | if (ckWARN_d(WARN_INPLACE)) |
566 | Perl_warner(aTHX_ WARN_INPLACE, | |
567 | "Can't rename %s to %s: %s, skipping file", | |
568 | PL_oldname, SvPVX(sv), Strerror(errno) ); | |
79072805 | 569 | do_close(gv,FALSE); |
c623bd54 LW |
570 | continue; |
571 | } | |
a687059c | 572 | #else |
79072805 | 573 | do_close(gv,FALSE); |
3028581b | 574 | (void)PerlLIO_unlink(SvPVX(sv)); |
b28d0864 | 575 | (void)PerlLIO_rename(PL_oldname,SvPVX(sv)); |
9d116dd7 | 576 | do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp); |
55497cff | 577 | #endif /* DOSISH */ |
ff8e2863 | 578 | #else |
463ee0b2 | 579 | (void)UNLINK(SvPVX(sv)); |
b28d0864 | 580 | if (link(PL_oldname,SvPVX(sv)) < 0) { |
0453d815 PM |
581 | if (ckWARN_d(WARN_INPLACE)) |
582 | Perl_warner(aTHX_ WARN_INPLACE, | |
583 | "Can't rename %s to %s: %s, skipping file", | |
584 | PL_oldname, SvPVX(sv), Strerror(errno) ); | |
79072805 | 585 | do_close(gv,FALSE); |
c623bd54 LW |
586 | continue; |
587 | } | |
b28d0864 | 588 | (void)UNLINK(PL_oldname); |
a687059c LW |
589 | #endif |
590 | } | |
591 | else { | |
a8c18271 | 592 | #if !defined(DOSISH) && !defined(AMIGAOS) |
edc7bc49 | 593 | # ifndef VMS /* Don't delete; use automatic file versioning */ |
3280af22 | 594 | if (UNLINK(PL_oldname) < 0) { |
0453d815 PM |
595 | if (ckWARN_d(WARN_INPLACE)) |
596 | Perl_warner(aTHX_ WARN_INPLACE, | |
597 | "Can't remove %s: %s, skipping file", | |
598 | PL_oldname, Strerror(errno) ); | |
79072805 | 599 | do_close(gv,FALSE); |
fe14fcc3 LW |
600 | continue; |
601 | } | |
edc7bc49 | 602 | # endif |
ff8e2863 | 603 | #else |
cea2e8a9 | 604 | Perl_croak(aTHX_ "Can't do inplace edit without backup"); |
ff8e2863 | 605 | #endif |
a687059c LW |
606 | } |
607 | ||
3280af22 NIS |
608 | sv_setpvn(sv,">",!PL_inplace); |
609 | sv_catpvn(sv,PL_oldname,oldlen); | |
748a9306 | 610 | SETERRNO(0,0); /* in case sprintf set errno */ |
4119ab01 HM |
611 | #ifdef VMS |
612 | if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0, | |
613 | O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp)) { | |
614 | #else | |
3280af22 | 615 | if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0, |
85aff577 | 616 | O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp)) { |
4119ab01 | 617 | #endif |
0453d815 PM |
618 | if (ckWARN_d(WARN_INPLACE)) |
619 | Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s", | |
620 | PL_oldname, Strerror(errno) ); | |
79072805 | 621 | do_close(gv,FALSE); |
fe14fcc3 LW |
622 | continue; |
623 | } | |
3280af22 NIS |
624 | setdefout(PL_argvoutgv); |
625 | PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv))); | |
626 | (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf); | |
fe14fcc3 | 627 | #ifdef HAS_FCHMOD |
3280af22 | 628 | (void)fchmod(PL_lastfd,PL_filemode); |
a687059c | 629 | #else |
3e3baf6d TB |
630 | # if !(defined(WIN32) && defined(__BORLANDC__)) |
631 | /* Borland runtime creates a readonly file! */ | |
b28d0864 | 632 | (void)PerlLIO_chmod(PL_oldname,PL_filemode); |
3e3baf6d | 633 | # endif |
a687059c | 634 | #endif |
3280af22 | 635 | if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) { |
fe14fcc3 | 636 | #ifdef HAS_FCHOWN |
3280af22 | 637 | (void)fchown(PL_lastfd,fileuid,filegid); |
a687059c | 638 | #else |
fe14fcc3 | 639 | #ifdef HAS_CHOWN |
b28d0864 | 640 | (void)PerlLIO_chown(PL_oldname,fileuid,filegid); |
a687059c | 641 | #endif |
b1248f16 | 642 | #endif |
fe14fcc3 | 643 | } |
a687059c | 644 | } |
a0d0e21e | 645 | return IoIFP(GvIOp(gv)); |
a687059c | 646 | } |
4d61ec05 GS |
647 | else { |
648 | dTHR; | |
649 | if (ckWARN_d(WARN_INPLACE)) { | |
650 | if (!S_ISREG(PL_statbuf.st_mode)) | |
651 | Perl_warner(aTHX_ WARN_INPLACE, | |
652 | "Can't do inplace edit: %s is not a regular file", | |
653 | PL_oldname ); | |
654 | else | |
655 | Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s\n", | |
656 | PL_oldname, Strerror(errno)); | |
657 | } | |
658 | } | |
a687059c | 659 | } |
3280af22 NIS |
660 | if (PL_inplace) { |
661 | (void)do_close(PL_argvoutgv,FALSE); | |
4633a7c4 | 662 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a687059c LW |
663 | } |
664 | return Nullfp; | |
665 | } | |
666 | ||
fe14fcc3 | 667 | #ifdef HAS_PIPE |
afd9f252 | 668 | void |
864dbfa3 | 669 | Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv) |
afd9f252 | 670 | { |
79072805 LW |
671 | register IO *rstio; |
672 | register IO *wstio; | |
afd9f252 LW |
673 | int fd[2]; |
674 | ||
79072805 | 675 | if (!rgv) |
afd9f252 | 676 | goto badexit; |
79072805 | 677 | if (!wgv) |
afd9f252 LW |
678 | goto badexit; |
679 | ||
a0d0e21e LW |
680 | rstio = GvIOn(rgv); |
681 | wstio = GvIOn(wgv); | |
afd9f252 | 682 | |
a0d0e21e | 683 | if (IoIFP(rstio)) |
79072805 | 684 | do_close(rgv,FALSE); |
a0d0e21e | 685 | if (IoIFP(wstio)) |
79072805 | 686 | do_close(wgv,FALSE); |
afd9f252 | 687 | |
3028581b | 688 | if (PerlProc_pipe(fd) < 0) |
afd9f252 | 689 | goto badexit; |
760ac839 LW |
690 | IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"); |
691 | IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"); | |
8990e307 LW |
692 | IoIFP(wstio) = IoOFP(wstio); |
693 | IoTYPE(rstio) = '<'; | |
694 | IoTYPE(wstio) = '>'; | |
695 | if (!IoIFP(rstio) || !IoOFP(wstio)) { | |
760ac839 | 696 | if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio)); |
3028581b | 697 | else PerlLIO_close(fd[0]); |
760ac839 | 698 | if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio)); |
3028581b | 699 | else PerlLIO_close(fd[1]); |
fe14fcc3 LW |
700 | goto badexit; |
701 | } | |
afd9f252 | 702 | |
3280af22 | 703 | sv_setsv(sv,&PL_sv_yes); |
afd9f252 LW |
704 | return; |
705 | ||
706 | badexit: | |
3280af22 | 707 | sv_setsv(sv,&PL_sv_undef); |
afd9f252 LW |
708 | return; |
709 | } | |
b1248f16 | 710 | #endif |
afd9f252 | 711 | |
517844ec | 712 | /* explicit renamed to avoid C++ conflict -- kja */ |
a687059c | 713 | bool |
864dbfa3 | 714 | Perl_do_close(pTHX_ GV *gv, bool not_implicit) |
a687059c | 715 | { |
1193dd27 IZ |
716 | bool retval; |
717 | IO *io; | |
a687059c | 718 | |
79072805 | 719 | if (!gv) |
3280af22 | 720 | gv = PL_argvgv; |
a0d0e21e | 721 | if (!gv || SvTYPE(gv) != SVt_PVGV) { |
1d2dff63 GS |
722 | if (not_implicit) |
723 | SETERRNO(EBADF,SS$_IVCHAN); | |
c2ab57d4 | 724 | return FALSE; |
99b89507 | 725 | } |
79072805 LW |
726 | io = GvIO(gv); |
727 | if (!io) { /* never opened */ | |
1d2dff63 | 728 | if (not_implicit) { |
d008e5eb | 729 | dTHR; |
599cee73 | 730 | if (ckWARN(WARN_UNOPENED)) |
cea2e8a9 | 731 | Perl_warner(aTHX_ WARN_UNOPENED, |
599cee73 | 732 | "Close on unopened file <%s>",GvENAME(gv)); |
1d2dff63 GS |
733 | SETERRNO(EBADF,SS$_IVCHAN); |
734 | } | |
a687059c LW |
735 | return FALSE; |
736 | } | |
f2b5be74 | 737 | retval = io_close(io, not_implicit); |
517844ec | 738 | if (not_implicit) { |
1193dd27 IZ |
739 | IoLINES(io) = 0; |
740 | IoPAGE(io) = 0; | |
741 | IoLINES_LEFT(io) = IoPAGE_LEN(io); | |
742 | } | |
743 | IoTYPE(io) = ' '; | |
744 | return retval; | |
745 | } | |
746 | ||
747 | bool | |
f2b5be74 | 748 | Perl_io_close(pTHX_ IO *io, bool not_implicit) |
1193dd27 IZ |
749 | { |
750 | bool retval = FALSE; | |
751 | int status; | |
752 | ||
8990e307 LW |
753 | if (IoIFP(io)) { |
754 | if (IoTYPE(io) == '|') { | |
3028581b | 755 | status = PerlProc_pclose(IoIFP(io)); |
f2b5be74 GS |
756 | if (not_implicit) { |
757 | STATUS_NATIVE_SET(status); | |
758 | retval = (STATUS_POSIX == 0); | |
759 | } | |
760 | else { | |
761 | retval = (status != -1); | |
762 | } | |
a687059c | 763 | } |
8990e307 | 764 | else if (IoTYPE(io) == '-') |
a687059c LW |
765 | retval = TRUE; |
766 | else { | |
8990e307 | 767 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */ |
760ac839 LW |
768 | retval = (PerlIO_close(IoOFP(io)) != EOF); |
769 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ | |
c2ab57d4 LW |
770 | } |
771 | else | |
760ac839 | 772 | retval = (PerlIO_close(IoIFP(io)) != EOF); |
a687059c | 773 | } |
8990e307 | 774 | IoOFP(io) = IoIFP(io) = Nullfp; |
79072805 | 775 | } |
f2b5be74 | 776 | else if (not_implicit) { |
20408e3c GS |
777 | SETERRNO(EBADF,SS$_IVCHAN); |
778 | } | |
1193dd27 | 779 | |
a687059c LW |
780 | return retval; |
781 | } | |
782 | ||
783 | bool | |
864dbfa3 | 784 | Perl_do_eof(pTHX_ GV *gv) |
a687059c | 785 | { |
11343788 | 786 | dTHR; |
79072805 | 787 | register IO *io; |
a687059c LW |
788 | int ch; |
789 | ||
79072805 | 790 | io = GvIO(gv); |
a687059c | 791 | |
79072805 | 792 | if (!io) |
a687059c | 793 | return TRUE; |
af8c498a GS |
794 | else if (ckWARN(WARN_IO) |
795 | && (IoTYPE(io) == '>' || IoIFP(io) == PerlIO_stdout() | |
796 | || IoIFP(io) == PerlIO_stderr())) | |
797 | { | |
798 | SV* sv = sv_newmortal(); | |
799 | gv_efullname3(sv, gv, Nullch); | |
800 | Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for output", | |
801 | SvPV_nolen(sv)); | |
802 | } | |
a687059c | 803 | |
8990e307 | 804 | while (IoIFP(io)) { |
a687059c | 805 | |
760ac839 | 806 | if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */ |
a20bf0c3 | 807 | if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */ |
760ac839 LW |
808 | return FALSE; /* this is the most usual case */ |
809 | } | |
a687059c | 810 | |
760ac839 | 811 | ch = PerlIO_getc(IoIFP(io)); |
a687059c | 812 | if (ch != EOF) { |
760ac839 | 813 | (void)PerlIO_ungetc(IoIFP(io),ch); |
a687059c LW |
814 | return FALSE; |
815 | } | |
760ac839 | 816 | if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) { |
a20bf0c3 JH |
817 | if (PerlIO_get_cnt(IoIFP(io)) < -1) |
818 | PerlIO_set_cnt(IoIFP(io),-1); | |
760ac839 | 819 | } |
533c011a | 820 | if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */ |
3280af22 | 821 | if (!nextargv(PL_argvgv)) /* get another fp handy */ |
a687059c LW |
822 | return TRUE; |
823 | } | |
824 | else | |
825 | return TRUE; /* normal fp, definitely end of file */ | |
826 | } | |
827 | return TRUE; | |
828 | } | |
829 | ||
5ff3f7a4 | 830 | Off_t |
864dbfa3 | 831 | Perl_do_tell(pTHX_ GV *gv) |
a687059c | 832 | { |
79072805 | 833 | register IO *io; |
96e4d5b1 | 834 | register PerlIO *fp; |
a687059c | 835 | |
96e4d5b1 | 836 | if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) { |
bee1dbe2 | 837 | #ifdef ULTRIX_STDIO_BOTCH |
96e4d5b1 | 838 | if (PerlIO_eof(fp)) |
839 | (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */ | |
bee1dbe2 | 840 | #endif |
8903cb82 | 841 | return PerlIO_tell(fp); |
96e4d5b1 | 842 | } |
d008e5eb GS |
843 | { |
844 | dTHR; | |
845 | if (ckWARN(WARN_UNOPENED)) | |
cea2e8a9 | 846 | Perl_warner(aTHX_ WARN_UNOPENED, "tell() on unopened file"); |
d008e5eb | 847 | } |
748a9306 | 848 | SETERRNO(EBADF,RMS$_IFI); |
5ff3f7a4 | 849 | return (Off_t)-1; |
a687059c LW |
850 | } |
851 | ||
852 | bool | |
864dbfa3 | 853 | Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence) |
a687059c | 854 | { |
79072805 | 855 | register IO *io; |
137443ea | 856 | register PerlIO *fp; |
a687059c | 857 | |
137443ea | 858 | if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) { |
bee1dbe2 | 859 | #ifdef ULTRIX_STDIO_BOTCH |
137443ea | 860 | if (PerlIO_eof(fp)) |
861 | (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */ | |
bee1dbe2 | 862 | #endif |
8903cb82 | 863 | return PerlIO_seek(fp, pos, whence) >= 0; |
137443ea | 864 | } |
d008e5eb GS |
865 | { |
866 | dTHR; | |
867 | if (ckWARN(WARN_UNOPENED)) | |
cea2e8a9 | 868 | Perl_warner(aTHX_ WARN_UNOPENED, "seek() on unopened file"); |
d008e5eb | 869 | } |
748a9306 | 870 | SETERRNO(EBADF,RMS$_IFI); |
a687059c LW |
871 | return FALSE; |
872 | } | |
873 | ||
97cc44eb | 874 | Off_t |
864dbfa3 | 875 | Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence) |
8903cb82 | 876 | { |
877 | register IO *io; | |
878 | register PerlIO *fp; | |
879 | ||
880 | if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) | |
3028581b | 881 | return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence); |
d008e5eb GS |
882 | { |
883 | dTHR; | |
884 | if (ckWARN(WARN_UNOPENED)) | |
cea2e8a9 | 885 | Perl_warner(aTHX_ WARN_UNOPENED, "sysseek() on unopened file"); |
d008e5eb | 886 | } |
8903cb82 | 887 | SETERRNO(EBADF,RMS$_IFI); |
d9b3e12d | 888 | return (Off_t)-1; |
8903cb82 | 889 | } |
890 | ||
6ff81951 | 891 | int |
864dbfa3 | 892 | Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int flag) |
6ff81951 GS |
893 | { |
894 | if (flag != TRUE) | |
cea2e8a9 | 895 | Perl_croak(aTHX_ "panic: unsetting binmode"); /* Not implemented yet */ |
6ff81951 | 896 | #ifdef DOSISH |
61ae2fbf | 897 | #if defined(atarist) || defined(__MINT__) |
6ff81951 GS |
898 | if (!PerlIO_flush(fp) && (fp->_flag |= _IOBIN)) |
899 | return 1; | |
900 | else | |
901 | return 0; | |
902 | #else | |
903 | if (PerlLIO_setmode(PerlIO_fileno(fp), OP_BINARY) != -1) { | |
904 | #if defined(WIN32) && defined(__BORLANDC__) | |
905 | /* The translation mode of the stream is maintained independent | |
906 | * of the translation mode of the fd in the Borland RTL (heavy | |
907 | * digging through their runtime sources reveal). User has to | |
908 | * set the mode explicitly for the stream (though they don't | |
909 | * document this anywhere). GSAR 97-5-24 | |
910 | */ | |
911 | PerlIO_seek(fp,0L,0); | |
873ef191 | 912 | ((FILE*)fp)->flags |= _F_BIN; |
6ff81951 GS |
913 | #endif |
914 | return 1; | |
915 | } | |
916 | else | |
917 | return 0; | |
918 | #endif | |
919 | #else | |
920 | #if defined(USEMYBINMODE) | |
1cab015a | 921 | if (my_binmode(fp,iotype) != FALSE) |
6ff81951 GS |
922 | return 1; |
923 | else | |
924 | return 0; | |
925 | #else | |
926 | return 1; | |
927 | #endif | |
928 | #endif | |
929 | } | |
930 | ||
a0d0e21e | 931 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP) |
c2ab57d4 | 932 | /* code courtesy of William Kucharski */ |
fe14fcc3 | 933 | #define HAS_CHSIZE |
6eb13c3b | 934 | |
517844ec | 935 | I32 my_chsize(fd, length) |
79072805 | 936 | I32 fd; /* file descriptor */ |
85e6fe83 | 937 | Off_t length; /* length to set file to */ |
6eb13c3b | 938 | { |
6eb13c3b LW |
939 | struct flock fl; |
940 | struct stat filebuf; | |
941 | ||
3028581b | 942 | if (PerlLIO_fstat(fd, &filebuf) < 0) |
6eb13c3b LW |
943 | return -1; |
944 | ||
945 | if (filebuf.st_size < length) { | |
946 | ||
947 | /* extend file length */ | |
948 | ||
3028581b | 949 | if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0) |
6eb13c3b LW |
950 | return -1; |
951 | ||
952 | /* write a "0" byte */ | |
953 | ||
3028581b | 954 | if ((PerlLIO_write(fd, "", 1)) != 1) |
6eb13c3b LW |
955 | return -1; |
956 | } | |
957 | else { | |
958 | /* truncate length */ | |
959 | ||
960 | fl.l_whence = 0; | |
961 | fl.l_len = 0; | |
962 | fl.l_start = length; | |
a0d0e21e | 963 | fl.l_type = F_WRLCK; /* write lock on file space */ |
6eb13c3b LW |
964 | |
965 | /* | |
a0d0e21e | 966 | * This relies on the UNDOCUMENTED F_FREESP argument to |
6eb13c3b LW |
967 | * fcntl(2), which truncates the file so that it ends at the |
968 | * position indicated by fl.l_start. | |
969 | * | |
970 | * Will minor miracles never cease? | |
971 | */ | |
972 | ||
a0d0e21e | 973 | if (fcntl(fd, F_FREESP, &fl) < 0) |
6eb13c3b LW |
974 | return -1; |
975 | ||
976 | } | |
977 | ||
978 | return 0; | |
979 | } | |
a0d0e21e | 980 | #endif /* F_FREESP */ |
ff8e2863 | 981 | |
a687059c | 982 | bool |
864dbfa3 | 983 | Perl_do_print(pTHX_ register SV *sv, PerlIO *fp) |
a687059c LW |
984 | { |
985 | register char *tmps; | |
463ee0b2 | 986 | STRLEN len; |
a687059c | 987 | |
79072805 LW |
988 | /* assuming fp is checked earlier */ |
989 | if (!sv) | |
990 | return TRUE; | |
3280af22 | 991 | if (PL_ofmt) { |
8990e307 | 992 | if (SvGMAGICAL(sv)) |
79072805 | 993 | mg_get(sv); |
463ee0b2 | 994 | if (SvIOK(sv) && SvIVX(sv) != 0) { |
65202027 | 995 | PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv)); |
760ac839 | 996 | return !PerlIO_error(fp); |
79072805 | 997 | } |
463ee0b2 | 998 | if ( (SvNOK(sv) && SvNVX(sv) != 0.0) |
79072805 | 999 | || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) { |
3280af22 | 1000 | PerlIO_printf(fp, PL_ofmt, SvNVX(sv)); |
760ac839 | 1001 | return !PerlIO_error(fp); |
79072805 | 1002 | } |
a687059c | 1003 | } |
79072805 LW |
1004 | switch (SvTYPE(sv)) { |
1005 | case SVt_NULL: | |
d008e5eb GS |
1006 | { |
1007 | dTHR; | |
1008 | if (ckWARN(WARN_UNINITIALIZED)) | |
cea2e8a9 | 1009 | Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit); |
d008e5eb | 1010 | } |
ff8e2863 | 1011 | return TRUE; |
79072805 | 1012 | case SVt_IV: |
a0d0e21e LW |
1013 | if (SvIOK(sv)) { |
1014 | if (SvGMAGICAL(sv)) | |
1015 | mg_get(sv); | |
cf2093f6 | 1016 | if (SvIsUV(sv)) |
57def98f | 1017 | PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv)); |
cf2093f6 | 1018 | else |
57def98f | 1019 | PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv)); |
760ac839 | 1020 | return !PerlIO_error(fp); |
a0d0e21e LW |
1021 | } |
1022 | /* FALL THROUGH */ | |
79072805 | 1023 | default: |
463ee0b2 | 1024 | tmps = SvPV(sv, len); |
79072805 | 1025 | break; |
ff8e2863 | 1026 | } |
94e4c244 JH |
1027 | /* To detect whether the process is about to overstep its |
1028 | * filesize limit we would need getrlimit(). We could then | |
1029 | * also transparently raise the limit with setrlimit() -- | |
1030 | * but only until the system hard limit/the filesystem limit, | |
c5dd3cdd JH |
1031 | * at which we would get EPERM. Note that when using buffered |
1032 | * io the write failure can be delayed until the flush/close. --jhi */ | |
760ac839 | 1033 | if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp))) |
a687059c | 1034 | return FALSE; |
760ac839 | 1035 | return !PerlIO_error(fp); |
a687059c LW |
1036 | } |
1037 | ||
79072805 | 1038 | I32 |
cea2e8a9 | 1039 | Perl_my_stat(pTHX) |
a687059c | 1040 | { |
4e35701f | 1041 | djSP; |
79072805 | 1042 | IO *io; |
748a9306 | 1043 | GV* tmpgv; |
79072805 | 1044 | |
533c011a | 1045 | if (PL_op->op_flags & OPf_REF) { |
924508f0 | 1046 | EXTEND(SP,1); |
748a9306 LW |
1047 | tmpgv = cGVOP->op_gv; |
1048 | do_fstat: | |
1049 | io = GvIO(tmpgv); | |
8990e307 | 1050 | if (io && IoIFP(io)) { |
3280af22 NIS |
1051 | PL_statgv = tmpgv; |
1052 | sv_setpv(PL_statname,""); | |
1053 | PL_laststype = OP_STAT; | |
1054 | return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache)); | |
a687059c LW |
1055 | } |
1056 | else { | |
3280af22 NIS |
1057 | if (tmpgv == PL_defgv) |
1058 | return PL_laststatval; | |
599cee73 | 1059 | if (ckWARN(WARN_UNOPENED)) |
cea2e8a9 | 1060 | Perl_warner(aTHX_ WARN_UNOPENED, "Stat on unopened file <%s>", |
748a9306 | 1061 | GvENAME(tmpgv)); |
3280af22 NIS |
1062 | PL_statgv = Nullgv; |
1063 | sv_setpv(PL_statname,""); | |
1064 | return (PL_laststatval = -1); | |
a687059c LW |
1065 | } |
1066 | } | |
1067 | else { | |
748a9306 | 1068 | SV* sv = POPs; |
4b74e3fb | 1069 | char *s; |
2d8e6c8d | 1070 | STRLEN n_a; |
79072805 | 1071 | PUTBACK; |
748a9306 LW |
1072 | if (SvTYPE(sv) == SVt_PVGV) { |
1073 | tmpgv = (GV*)sv; | |
1074 | goto do_fstat; | |
1075 | } | |
1076 | else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) { | |
1077 | tmpgv = (GV*)SvRV(sv); | |
1078 | goto do_fstat; | |
1079 | } | |
1080 | ||
2d8e6c8d | 1081 | s = SvPV(sv, n_a); |
3280af22 NIS |
1082 | PL_statgv = Nullgv; |
1083 | sv_setpv(PL_statname, s); | |
1084 | PL_laststype = OP_STAT; | |
1085 | PL_laststatval = PerlLIO_stat(s, &PL_statcache); | |
599cee73 | 1086 | if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n')) |
cea2e8a9 | 1087 | Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat"); |
3280af22 | 1088 | return PL_laststatval; |
a687059c LW |
1089 | } |
1090 | } | |
1091 | ||
79072805 | 1092 | I32 |
cea2e8a9 | 1093 | Perl_my_lstat(pTHX) |
c623bd54 | 1094 | { |
4e35701f | 1095 | djSP; |
79072805 | 1096 | SV *sv; |
2d8e6c8d | 1097 | STRLEN n_a; |
533c011a | 1098 | if (PL_op->op_flags & OPf_REF) { |
924508f0 | 1099 | EXTEND(SP,1); |
3280af22 NIS |
1100 | if (cGVOP->op_gv == PL_defgv) { |
1101 | if (PL_laststype != OP_LSTAT) | |
cea2e8a9 | 1102 | Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat"); |
3280af22 | 1103 | return PL_laststatval; |
fe14fcc3 | 1104 | } |
cea2e8a9 | 1105 | Perl_croak(aTHX_ "You can't use -l on a filehandle"); |
fe14fcc3 | 1106 | } |
c623bd54 | 1107 | |
3280af22 NIS |
1108 | PL_laststype = OP_LSTAT; |
1109 | PL_statgv = Nullgv; | |
79072805 LW |
1110 | sv = POPs; |
1111 | PUTBACK; | |
2d8e6c8d | 1112 | sv_setpv(PL_statname,SvPV(sv, n_a)); |
2d8e6c8d | 1113 | PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache); |
2d8e6c8d | 1114 | if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n')) |
cea2e8a9 | 1115 | Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat"); |
3280af22 | 1116 | return PL_laststatval; |
c623bd54 LW |
1117 | } |
1118 | ||
a687059c | 1119 | bool |
864dbfa3 | 1120 | Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp) |
a687059c | 1121 | { |
d5a9bfb0 IZ |
1122 | return do_aexec5(really, mark, sp, 0, 0); |
1123 | } | |
1124 | ||
1125 | bool | |
2aa1486d GS |
1126 | Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp, |
1127 | int fd, int do_report) | |
d5a9bfb0 | 1128 | { |
a687059c | 1129 | register char **a; |
a687059c | 1130 | char *tmps; |
2d8e6c8d | 1131 | STRLEN n_a; |
a687059c | 1132 | |
79072805 | 1133 | if (sp > mark) { |
11343788 | 1134 | dTHR; |
3280af22 NIS |
1135 | New(401,PL_Argv, sp - mark + 1, char*); |
1136 | a = PL_Argv; | |
79072805 LW |
1137 | while (++mark <= sp) { |
1138 | if (*mark) | |
2d8e6c8d | 1139 | *a++ = SvPVx(*mark, n_a); |
a687059c LW |
1140 | else |
1141 | *a++ = ""; | |
1142 | } | |
1143 | *a = Nullch; | |
3280af22 | 1144 | if (*PL_Argv[0] != '/') /* will execvp use PATH? */ |
79072805 | 1145 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
2d8e6c8d | 1146 | if (really && *(tmps = SvPV(really, n_a))) |
3280af22 | 1147 | PerlProc_execvp(tmps,PL_Argv); |
a687059c | 1148 | else |
3280af22 | 1149 | PerlProc_execvp(PL_Argv[0],PL_Argv); |
599cee73 | 1150 | if (ckWARN(WARN_EXEC)) |
cea2e8a9 | 1151 | Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s", |
599cee73 | 1152 | PL_Argv[0], Strerror(errno)); |
d5a9bfb0 IZ |
1153 | if (do_report) { |
1154 | int e = errno; | |
1155 | ||
1156 | PerlLIO_write(fd, (void*)&e, sizeof(int)); | |
1157 | PerlLIO_close(fd); | |
1158 | } | |
a687059c | 1159 | } |
bee1dbe2 | 1160 | do_execfree(); |
a687059c LW |
1161 | return FALSE; |
1162 | } | |
1163 | ||
fe14fcc3 | 1164 | void |
864dbfa3 | 1165 | Perl_do_execfree(pTHX) |
ff8e2863 | 1166 | { |
3280af22 NIS |
1167 | if (PL_Argv) { |
1168 | Safefree(PL_Argv); | |
1169 | PL_Argv = Null(char **); | |
ff8e2863 | 1170 | } |
3280af22 NIS |
1171 | if (PL_Cmd) { |
1172 | Safefree(PL_Cmd); | |
1173 | PL_Cmd = Nullch; | |
ff8e2863 LW |
1174 | } |
1175 | } | |
1176 | ||
4d2c4e07 | 1177 | #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) |
760ac839 | 1178 | |
a687059c | 1179 | bool |
864dbfa3 | 1180 | Perl_do_exec(pTHX_ char *cmd) |
a687059c | 1181 | { |
e446cec8 IZ |
1182 | return do_exec3(cmd,0,0); |
1183 | } | |
1184 | ||
1185 | bool | |
864dbfa3 | 1186 | Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report) |
e446cec8 | 1187 | { |
a687059c LW |
1188 | register char **a; |
1189 | register char *s; | |
a687059c LW |
1190 | char flags[10]; |
1191 | ||
748a9306 LW |
1192 | while (*cmd && isSPACE(*cmd)) |
1193 | cmd++; | |
1194 | ||
a687059c LW |
1195 | /* save an extra exec if possible */ |
1196 | ||
bf38876a | 1197 | #ifdef CSH |
3280af22 | 1198 | if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) { |
a687059c | 1199 | strcpy(flags,"-c"); |
3280af22 | 1200 | s = cmd+PL_cshlen+3; |
a687059c LW |
1201 | if (*s == 'f') { |
1202 | s++; | |
1203 | strcat(flags,"f"); | |
1204 | } | |
1205 | if (*s == ' ') | |
1206 | s++; | |
1207 | if (*s++ == '\'') { | |
1208 | char *ncmd = s; | |
1209 | ||
1210 | while (*s) | |
1211 | s++; | |
1212 | if (s[-1] == '\n') | |
1213 | *--s = '\0'; | |
1214 | if (s[-1] == '\'') { | |
1215 | *--s = '\0'; | |
3280af22 | 1216 | PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0); |
a687059c LW |
1217 | *s = '\''; |
1218 | return FALSE; | |
1219 | } | |
1220 | } | |
1221 | } | |
bf38876a | 1222 | #endif /* CSH */ |
a687059c LW |
1223 | |
1224 | /* see if there are shell metacharacters in it */ | |
1225 | ||
748a9306 LW |
1226 | if (*cmd == '.' && isSPACE(cmd[1])) |
1227 | goto doshell; | |
1228 | ||
1229 | if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4])) | |
1230 | goto doshell; | |
1231 | ||
99b89507 | 1232 | for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */ |
63f2c1e1 LW |
1233 | if (*s == '=') |
1234 | goto doshell; | |
748a9306 | 1235 | |
a687059c | 1236 | for (s = cmd; *s; s++) { |
93a17b20 | 1237 | if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c LW |
1238 | if (*s == '\n' && !s[1]) { |
1239 | *s = '\0'; | |
1240 | break; | |
1241 | } | |
603a98b0 IZ |
1242 | /* handle the 2>&1 construct at the end */ |
1243 | if (*s == '>' && s[1] == '&' && s[2] == '1' | |
1244 | && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2]) | |
1245 | && (!s[3] || isSPACE(s[3]))) | |
1246 | { | |
1247 | char *t = s + 3; | |
1248 | ||
1249 | while (*t && isSPACE(*t)) | |
1250 | ++t; | |
1251 | if (!*t && (dup2(1,2) != -1)) { | |
1252 | s[-2] = '\0'; | |
1253 | break; | |
1254 | } | |
1255 | } | |
a687059c | 1256 | doshell: |
3280af22 | 1257 | PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0); |
a687059c LW |
1258 | return FALSE; |
1259 | } | |
1260 | } | |
748a9306 | 1261 | |
3280af22 NIS |
1262 | New(402,PL_Argv, (s - cmd) / 2 + 2, char*); |
1263 | PL_Cmd = savepvn(cmd, s-cmd); | |
1264 | a = PL_Argv; | |
1265 | for (s = PL_Cmd; *s;) { | |
99b89507 | 1266 | while (*s && isSPACE(*s)) s++; |
a687059c LW |
1267 | if (*s) |
1268 | *(a++) = s; | |
99b89507 | 1269 | while (*s && !isSPACE(*s)) s++; |
a687059c LW |
1270 | if (*s) |
1271 | *s++ = '\0'; | |
1272 | } | |
1273 | *a = Nullch; | |
3280af22 NIS |
1274 | if (PL_Argv[0]) { |
1275 | PerlProc_execvp(PL_Argv[0],PL_Argv); | |
b1248f16 | 1276 | if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
ff8e2863 | 1277 | do_execfree(); |
a687059c | 1278 | goto doshell; |
b1248f16 | 1279 | } |
d008e5eb GS |
1280 | { |
1281 | dTHR; | |
e446cec8 IZ |
1282 | int e = errno; |
1283 | ||
d008e5eb | 1284 | if (ckWARN(WARN_EXEC)) |
cea2e8a9 | 1285 | Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s", |
d008e5eb | 1286 | PL_Argv[0], Strerror(errno)); |
e446cec8 IZ |
1287 | if (do_report) { |
1288 | PerlLIO_write(fd, (void*)&e, sizeof(int)); | |
1289 | PerlLIO_close(fd); | |
1290 | } | |
d008e5eb | 1291 | } |
a687059c | 1292 | } |
ff8e2863 | 1293 | do_execfree(); |
a687059c LW |
1294 | return FALSE; |
1295 | } | |
1296 | ||
6890e559 | 1297 | #endif /* OS2 || WIN32 */ |
760ac839 | 1298 | |
79072805 | 1299 | I32 |
864dbfa3 | 1300 | Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp) |
a687059c | 1301 | { |
11343788 | 1302 | dTHR; |
79072805 LW |
1303 | register I32 val; |
1304 | register I32 val2; | |
1305 | register I32 tot = 0; | |
20408e3c | 1306 | char *what; |
a687059c | 1307 | char *s; |
79072805 | 1308 | SV **oldmark = mark; |
2d8e6c8d | 1309 | STRLEN n_a; |
a687059c | 1310 | |
20408e3c | 1311 | #define APPLY_TAINT_PROPER() \ |
3280af22 | 1312 | STMT_START { \ |
17406bd6 | 1313 | if (PL_tainted) { TAINT_PROPER(what); } \ |
873ef191 | 1314 | } STMT_END |
20408e3c GS |
1315 | |
1316 | /* This is a first heuristic; it doesn't catch tainting magic. */ | |
3280af22 | 1317 | if (PL_tainting) { |
463ee0b2 | 1318 | while (++mark <= sp) { |
bbce6d69 | 1319 | if (SvTAINTED(*mark)) { |
1320 | TAINT; | |
1321 | break; | |
1322 | } | |
463ee0b2 LW |
1323 | } |
1324 | mark = oldmark; | |
1325 | } | |
a687059c | 1326 | switch (type) { |
79072805 | 1327 | case OP_CHMOD: |
20408e3c GS |
1328 | what = "chmod"; |
1329 | APPLY_TAINT_PROPER(); | |
79072805 | 1330 | if (++mark <= sp) { |
463ee0b2 | 1331 | val = SvIVx(*mark); |
20408e3c GS |
1332 | APPLY_TAINT_PROPER(); |
1333 | tot = sp - mark; | |
79072805 | 1334 | while (++mark <= sp) { |
2d8e6c8d | 1335 | char *name = SvPVx(*mark, n_a); |
20408e3c GS |
1336 | APPLY_TAINT_PROPER(); |
1337 | if (PerlLIO_chmod(name, val)) | |
a687059c LW |
1338 | tot--; |
1339 | } | |
1340 | } | |
1341 | break; | |
fe14fcc3 | 1342 | #ifdef HAS_CHOWN |
79072805 | 1343 | case OP_CHOWN: |
20408e3c GS |
1344 | what = "chown"; |
1345 | APPLY_TAINT_PROPER(); | |
79072805 | 1346 | if (sp - mark > 2) { |
463ee0b2 LW |
1347 | val = SvIVx(*++mark); |
1348 | val2 = SvIVx(*++mark); | |
20408e3c | 1349 | APPLY_TAINT_PROPER(); |
a0d0e21e | 1350 | tot = sp - mark; |
79072805 | 1351 | while (++mark <= sp) { |
2d8e6c8d | 1352 | char *name = SvPVx(*mark, n_a); |
20408e3c | 1353 | APPLY_TAINT_PROPER(); |
36660982 | 1354 | if (PerlLIO_chown(name, val, val2)) |
a687059c LW |
1355 | tot--; |
1356 | } | |
1357 | } | |
1358 | break; | |
b1248f16 | 1359 | #endif |
dd64f1c3 AD |
1360 | /* |
1361 | XXX Should we make lchown() directly available from perl? | |
1362 | For now, we'll let Configure test for HAS_LCHOWN, but do | |
1363 | nothing in the core. | |
1364 | --AD 5/1998 | |
1365 | */ | |
fe14fcc3 | 1366 | #ifdef HAS_KILL |
79072805 | 1367 | case OP_KILL: |
20408e3c GS |
1368 | what = "kill"; |
1369 | APPLY_TAINT_PROPER(); | |
55497cff | 1370 | if (mark == sp) |
1371 | break; | |
2d8e6c8d | 1372 | s = SvPVx(*++mark, n_a); |
79072805 LW |
1373 | if (isUPPER(*s)) { |
1374 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') | |
1375 | s += 3; | |
1376 | if (!(val = whichsig(s))) | |
cea2e8a9 | 1377 | Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s); |
79072805 LW |
1378 | } |
1379 | else | |
463ee0b2 | 1380 | val = SvIVx(*mark); |
20408e3c GS |
1381 | APPLY_TAINT_PROPER(); |
1382 | tot = sp - mark; | |
3595fcef | 1383 | #ifdef VMS |
1384 | /* kill() doesn't do process groups (job trees?) under VMS */ | |
1385 | if (val < 0) val = -val; | |
1386 | if (val == SIGKILL) { | |
1387 | # include <starlet.h> | |
1388 | /* Use native sys$delprc() to insure that target process is | |
1389 | * deleted; supervisor-mode images don't pay attention to | |
1390 | * CRTL's emulation of Unix-style signals and kill() | |
1391 | */ | |
1392 | while (++mark <= sp) { | |
1393 | I32 proc = SvIVx(*mark); | |
1394 | register unsigned long int __vmssts; | |
20408e3c | 1395 | APPLY_TAINT_PROPER(); |
3595fcef | 1396 | if (!((__vmssts = sys$delprc(&proc,0)) & 1)) { |
1397 | tot--; | |
1398 | switch (__vmssts) { | |
1399 | case SS$_NONEXPR: | |
1400 | case SS$_NOSUCHNODE: | |
1401 | SETERRNO(ESRCH,__vmssts); | |
1402 | break; | |
1403 | case SS$_NOPRIV: | |
1404 | SETERRNO(EPERM,__vmssts); | |
1405 | break; | |
1406 | default: | |
1407 | SETERRNO(EVMSERR,__vmssts); | |
1408 | } | |
1409 | } | |
1410 | } | |
1411 | break; | |
1412 | } | |
1413 | #endif | |
79072805 LW |
1414 | if (val < 0) { |
1415 | val = -val; | |
1416 | while (++mark <= sp) { | |
463ee0b2 | 1417 | I32 proc = SvIVx(*mark); |
20408e3c | 1418 | APPLY_TAINT_PROPER(); |
fe14fcc3 | 1419 | #ifdef HAS_KILLPG |
3028581b | 1420 | if (PerlProc_killpg(proc,val)) /* BSD */ |
a687059c | 1421 | #else |
3028581b | 1422 | if (PerlProc_kill(-proc,val)) /* SYSV */ |
a687059c | 1423 | #endif |
79072805 | 1424 | tot--; |
a687059c | 1425 | } |
79072805 LW |
1426 | } |
1427 | else { | |
1428 | while (++mark <= sp) { | |
20408e3c GS |
1429 | I32 proc = SvIVx(*mark); |
1430 | APPLY_TAINT_PROPER(); | |
1431 | if (PerlProc_kill(proc, val)) | |
79072805 | 1432 | tot--; |
a687059c LW |
1433 | } |
1434 | } | |
1435 | break; | |
b1248f16 | 1436 | #endif |
79072805 | 1437 | case OP_UNLINK: |
20408e3c GS |
1438 | what = "unlink"; |
1439 | APPLY_TAINT_PROPER(); | |
79072805 LW |
1440 | tot = sp - mark; |
1441 | while (++mark <= sp) { | |
2d8e6c8d | 1442 | s = SvPVx(*mark, n_a); |
20408e3c | 1443 | APPLY_TAINT_PROPER(); |
3280af22 | 1444 | if (PL_euid || PL_unsafe) { |
a687059c LW |
1445 | if (UNLINK(s)) |
1446 | tot--; | |
1447 | } | |
1448 | else { /* don't let root wipe out directories without -U */ | |
3280af22 | 1449 | if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode)) |
a687059c LW |
1450 | tot--; |
1451 | else { | |
1452 | if (UNLINK(s)) | |
1453 | tot--; | |
1454 | } | |
1455 | } | |
1456 | } | |
1457 | break; | |
a0d0e21e | 1458 | #ifdef HAS_UTIME |
79072805 | 1459 | case OP_UTIME: |
20408e3c GS |
1460 | what = "utime"; |
1461 | APPLY_TAINT_PROPER(); | |
79072805 | 1462 | if (sp - mark > 2) { |
748a9306 | 1463 | #if defined(I_UTIME) || defined(VMS) |
663a0e37 LW |
1464 | struct utimbuf utbuf; |
1465 | #else | |
a687059c | 1466 | struct { |
dd2821f6 GS |
1467 | Time_t actime; |
1468 | Time_t modtime; | |
a687059c | 1469 | } utbuf; |
663a0e37 | 1470 | #endif |
a687059c | 1471 | |
afd9f252 | 1472 | Zero(&utbuf, sizeof utbuf, char); |
517844ec | 1473 | #ifdef BIG_TIME |
dd2821f6 GS |
1474 | utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */ |
1475 | utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */ | |
517844ec | 1476 | #else |
dd2821f6 GS |
1477 | utbuf.actime = (Time_t)SvIVx(*++mark); /* time accessed */ |
1478 | utbuf.modtime = (Time_t)SvIVx(*++mark); /* time modified */ | |
517844ec | 1479 | #endif |
20408e3c | 1480 | APPLY_TAINT_PROPER(); |
79072805 LW |
1481 | tot = sp - mark; |
1482 | while (++mark <= sp) { | |
2d8e6c8d | 1483 | char *name = SvPVx(*mark, n_a); |
20408e3c GS |
1484 | APPLY_TAINT_PROPER(); |
1485 | if (PerlLIO_utime(name, &utbuf)) | |
a687059c LW |
1486 | tot--; |
1487 | } | |
a687059c LW |
1488 | } |
1489 | else | |
79072805 | 1490 | tot = 0; |
a687059c | 1491 | break; |
a0d0e21e | 1492 | #endif |
a687059c LW |
1493 | } |
1494 | return tot; | |
20408e3c | 1495 | |
20408e3c | 1496 | #undef APPLY_TAINT_PROPER |
a687059c LW |
1497 | } |
1498 | ||
1499 | /* Do the permissions allow some operation? Assumes statcache already set. */ | |
a0d0e21e | 1500 | #ifndef VMS /* VMS' cando is in vms.c */ |
7f4774ae JH |
1501 | bool |
1502 | Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp) | |
1503 | /* Note: we use `effective' both for uids and gids. | |
1504 | * Here we are betting on Uid_t being equal or wider than Gid_t. */ | |
a687059c | 1505 | { |
bee1dbe2 | 1506 | #ifdef DOSISH |
fe14fcc3 LW |
1507 | /* [Comments and code from Len Reed] |
1508 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write | |
1509 | * to write-protected files. The execute permission bit is set | |
1510 | * by the Miscrosoft C library stat() function for the following: | |
1511 | * .exe files | |
1512 | * .com files | |
1513 | * .bat files | |
1514 | * directories | |
1515 | * All files and directories are readable. | |
1516 | * Directories and special files, e.g. "CON", cannot be | |
1517 | * write-protected. | |
1518 | * [Comment by Tom Dinger -- a directory can have the write-protect | |
1519 | * bit set in the file system, but DOS permits changes to | |
1520 | * the directory anyway. In addition, all bets are off | |
1521 | * here for networked software, such as Novell and | |
1522 | * Sun's PC-NFS.] | |
1523 | */ | |
1524 | ||
bee1dbe2 LW |
1525 | /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat |
1526 | * too so it will actually look into the files for magic numbers | |
1527 | */ | |
7f4774ae | 1528 | return (mode & statbufp->st_mode) ? TRUE : FALSE; |
fe14fcc3 | 1529 | |
55497cff | 1530 | #else /* ! DOSISH */ |
3280af22 | 1531 | if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */ |
7f4774ae | 1532 | if (mode == S_IXUSR) { |
c623bd54 | 1533 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) |
a687059c LW |
1534 | return TRUE; |
1535 | } | |
1536 | else | |
1537 | return TRUE; /* root reads and writes anything */ | |
1538 | return FALSE; | |
1539 | } | |
3280af22 | 1540 | if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) { |
7f4774ae | 1541 | if (statbufp->st_mode & mode) |
a687059c LW |
1542 | return TRUE; /* ok as "user" */ |
1543 | } | |
d8eceb89 | 1544 | else if (ingroup(statbufp->st_gid,effective)) { |
7f4774ae | 1545 | if (statbufp->st_mode & mode >> 3) |
a687059c LW |
1546 | return TRUE; /* ok as "group" */ |
1547 | } | |
7f4774ae | 1548 | else if (statbufp->st_mode & mode >> 6) |
a687059c LW |
1549 | return TRUE; /* ok as "other" */ |
1550 | return FALSE; | |
55497cff | 1551 | #endif /* ! DOSISH */ |
a687059c | 1552 | } |
a0d0e21e | 1553 | #endif /* ! VMS */ |
a687059c | 1554 | |
d8eceb89 JH |
1555 | bool |
1556 | Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective) | |
a687059c | 1557 | { |
3280af22 | 1558 | if (testgid == (effective ? PL_egid : PL_gid)) |
a687059c | 1559 | return TRUE; |
fe14fcc3 | 1560 | #ifdef HAS_GETGROUPS |
a687059c LW |
1561 | #ifndef NGROUPS |
1562 | #define NGROUPS 32 | |
1563 | #endif | |
1564 | { | |
a0d0e21e | 1565 | Groups_t gary[NGROUPS]; |
79072805 | 1566 | I32 anum; |
a687059c LW |
1567 | |
1568 | anum = getgroups(NGROUPS,gary); | |
1569 | while (--anum >= 0) | |
1570 | if (gary[anum] == testgid) | |
1571 | return TRUE; | |
1572 | } | |
1573 | #endif | |
1574 | return FALSE; | |
1575 | } | |
c2ab57d4 | 1576 | |
fe14fcc3 | 1577 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 | 1578 | |
79072805 | 1579 | I32 |
864dbfa3 | 1580 | Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp) |
c2ab57d4 | 1581 | { |
11343788 | 1582 | dTHR; |
c2ab57d4 | 1583 | key_t key; |
79072805 | 1584 | I32 n, flags; |
c2ab57d4 | 1585 | |
463ee0b2 LW |
1586 | key = (key_t)SvNVx(*++mark); |
1587 | n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark); | |
1588 | flags = SvIVx(*++mark); | |
748a9306 | 1589 | SETERRNO(0,0); |
c2ab57d4 LW |
1590 | switch (optype) |
1591 | { | |
fe14fcc3 | 1592 | #ifdef HAS_MSG |
79072805 | 1593 | case OP_MSGGET: |
c2ab57d4 | 1594 | return msgget(key, flags); |
e5d73d77 | 1595 | #endif |
fe14fcc3 | 1596 | #ifdef HAS_SEM |
79072805 | 1597 | case OP_SEMGET: |
c2ab57d4 | 1598 | return semget(key, n, flags); |
e5d73d77 | 1599 | #endif |
fe14fcc3 | 1600 | #ifdef HAS_SHM |
79072805 | 1601 | case OP_SHMGET: |
c2ab57d4 | 1602 | return shmget(key, n, flags); |
e5d73d77 | 1603 | #endif |
fe14fcc3 | 1604 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 1605 | default: |
cea2e8a9 | 1606 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
e5d73d77 | 1607 | #endif |
c2ab57d4 LW |
1608 | } |
1609 | return -1; /* should never happen */ | |
1610 | } | |
1611 | ||
79072805 | 1612 | I32 |
864dbfa3 | 1613 | Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp) |
c2ab57d4 | 1614 | { |
11343788 | 1615 | dTHR; |
79072805 | 1616 | SV *astr; |
c2ab57d4 | 1617 | char *a; |
a0d0e21e LW |
1618 | I32 id, n, cmd, infosize, getinfo; |
1619 | I32 ret = -1; | |
c2ab57d4 | 1620 | |
463ee0b2 LW |
1621 | id = SvIVx(*++mark); |
1622 | n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0; | |
1623 | cmd = SvIVx(*++mark); | |
79072805 | 1624 | astr = *++mark; |
c2ab57d4 LW |
1625 | infosize = 0; |
1626 | getinfo = (cmd == IPC_STAT); | |
1627 | ||
1628 | switch (optype) | |
1629 | { | |
fe14fcc3 | 1630 | #ifdef HAS_MSG |
79072805 | 1631 | case OP_MSGCTL: |
c2ab57d4 LW |
1632 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1633 | infosize = sizeof(struct msqid_ds); | |
1634 | break; | |
e5d73d77 | 1635 | #endif |
fe14fcc3 | 1636 | #ifdef HAS_SHM |
79072805 | 1637 | case OP_SHMCTL: |
c2ab57d4 LW |
1638 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1639 | infosize = sizeof(struct shmid_ds); | |
1640 | break; | |
e5d73d77 | 1641 | #endif |
fe14fcc3 | 1642 | #ifdef HAS_SEM |
79072805 | 1643 | case OP_SEMCTL: |
39398f3f | 1644 | #ifdef Semctl |
c2ab57d4 LW |
1645 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1646 | infosize = sizeof(struct semid_ds); | |
1647 | else if (cmd == GETALL || cmd == SETALL) | |
1648 | { | |
8e591e46 | 1649 | struct semid_ds semds; |
bd89102f AD |
1650 | union semun semun; |
1651 | ||
84902520 | 1652 | semun.buf = &semds; |
c2ab57d4 | 1653 | getinfo = (cmd == GETALL); |
9b89d93d GB |
1654 | if (Semctl(id, 0, IPC_STAT, semun) == -1) |
1655 | return -1; | |
6e21c824 LW |
1656 | infosize = semds.sem_nsems * sizeof(short); |
1657 | /* "short" is technically wrong but much more portable | |
1658 | than guessing about u_?short(_t)? */ | |
c2ab57d4 | 1659 | } |
39398f3f | 1660 | #else |
cea2e8a9 | 1661 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
39398f3f | 1662 | #endif |
c2ab57d4 | 1663 | break; |
e5d73d77 | 1664 | #endif |
fe14fcc3 | 1665 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 1666 | default: |
cea2e8a9 | 1667 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
e5d73d77 | 1668 | #endif |
c2ab57d4 LW |
1669 | } |
1670 | ||
1671 | if (infosize) | |
1672 | { | |
a0d0e21e | 1673 | STRLEN len; |
c2ab57d4 LW |
1674 | if (getinfo) |
1675 | { | |
a0d0e21e LW |
1676 | SvPV_force(astr, len); |
1677 | a = SvGROW(astr, infosize+1); | |
c2ab57d4 LW |
1678 | } |
1679 | else | |
1680 | { | |
463ee0b2 LW |
1681 | a = SvPV(astr, len); |
1682 | if (len != infosize) | |
cea2e8a9 | 1683 | Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld", |
4ec43091 JH |
1684 | PL_op_desc[optype], |
1685 | (unsigned long)len, | |
1686 | (long)infosize); | |
c2ab57d4 LW |
1687 | } |
1688 | } | |
1689 | else | |
1690 | { | |
c030ccd9 | 1691 | IV i = SvIV(astr); |
56431972 | 1692 | a = INT2PTR(char *,i); /* ouch */ |
c2ab57d4 | 1693 | } |
748a9306 | 1694 | SETERRNO(0,0); |
c2ab57d4 LW |
1695 | switch (optype) |
1696 | { | |
fe14fcc3 | 1697 | #ifdef HAS_MSG |
79072805 | 1698 | case OP_MSGCTL: |
bee1dbe2 | 1699 | ret = msgctl(id, cmd, (struct msqid_ds *)a); |
c2ab57d4 | 1700 | break; |
e5d73d77 | 1701 | #endif |
fe14fcc3 | 1702 | #ifdef HAS_SEM |
bd89102f | 1703 | case OP_SEMCTL: { |
39398f3f | 1704 | #ifdef Semctl |
bd89102f AD |
1705 | union semun unsemds; |
1706 | ||
1707 | unsemds.buf = (struct semid_ds *)a; | |
1708 | ret = Semctl(id, n, cmd, unsemds); | |
39398f3f | 1709 | #else |
cea2e8a9 | 1710 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
39398f3f | 1711 | #endif |
bd89102f | 1712 | } |
c2ab57d4 | 1713 | break; |
e5d73d77 | 1714 | #endif |
fe14fcc3 | 1715 | #ifdef HAS_SHM |
79072805 | 1716 | case OP_SHMCTL: |
bee1dbe2 | 1717 | ret = shmctl(id, cmd, (struct shmid_ds *)a); |
c2ab57d4 | 1718 | break; |
e5d73d77 | 1719 | #endif |
c2ab57d4 LW |
1720 | } |
1721 | if (getinfo && ret >= 0) { | |
79072805 LW |
1722 | SvCUR_set(astr, infosize); |
1723 | *SvEND(astr) = '\0'; | |
a0d0e21e | 1724 | SvSETMAGIC(astr); |
c2ab57d4 LW |
1725 | } |
1726 | return ret; | |
1727 | } | |
1728 | ||
79072805 | 1729 | I32 |
864dbfa3 | 1730 | Perl_do_msgsnd(pTHX_ SV **mark, SV **sp) |
c2ab57d4 | 1731 | { |
fe14fcc3 | 1732 | #ifdef HAS_MSG |
11343788 | 1733 | dTHR; |
79072805 | 1734 | SV *mstr; |
c2ab57d4 | 1735 | char *mbuf; |
79072805 | 1736 | I32 id, msize, flags; |
463ee0b2 | 1737 | STRLEN len; |
c2ab57d4 | 1738 | |
463ee0b2 | 1739 | id = SvIVx(*++mark); |
79072805 | 1740 | mstr = *++mark; |
463ee0b2 LW |
1741 | flags = SvIVx(*++mark); |
1742 | mbuf = SvPV(mstr, len); | |
1743 | if ((msize = len - sizeof(long)) < 0) | |
cea2e8a9 | 1744 | Perl_croak(aTHX_ "Arg too short for msgsnd"); |
748a9306 | 1745 | SETERRNO(0,0); |
bee1dbe2 | 1746 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); |
e5d73d77 | 1747 | #else |
cea2e8a9 | 1748 | Perl_croak(aTHX_ "msgsnd not implemented"); |
e5d73d77 | 1749 | #endif |
c2ab57d4 LW |
1750 | } |
1751 | ||
79072805 | 1752 | I32 |
864dbfa3 | 1753 | Perl_do_msgrcv(pTHX_ SV **mark, SV **sp) |
c2ab57d4 | 1754 | { |
fe14fcc3 | 1755 | #ifdef HAS_MSG |
11343788 | 1756 | dTHR; |
79072805 | 1757 | SV *mstr; |
c2ab57d4 LW |
1758 | char *mbuf; |
1759 | long mtype; | |
79072805 | 1760 | I32 id, msize, flags, ret; |
463ee0b2 | 1761 | STRLEN len; |
79072805 | 1762 | |
463ee0b2 | 1763 | id = SvIVx(*++mark); |
79072805 | 1764 | mstr = *++mark; |
463ee0b2 LW |
1765 | msize = SvIVx(*++mark); |
1766 | mtype = (long)SvIVx(*++mark); | |
1767 | flags = SvIVx(*++mark); | |
a0d0e21e LW |
1768 | SvPV_force(mstr, len); |
1769 | mbuf = SvGROW(mstr, sizeof(long)+msize+1); | |
1770 | ||
748a9306 | 1771 | SETERRNO(0,0); |
bee1dbe2 | 1772 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); |
c2ab57d4 | 1773 | if (ret >= 0) { |
79072805 LW |
1774 | SvCUR_set(mstr, sizeof(long)+ret); |
1775 | *SvEND(mstr) = '\0'; | |
c2ab57d4 LW |
1776 | } |
1777 | return ret; | |
e5d73d77 | 1778 | #else |
cea2e8a9 | 1779 | Perl_croak(aTHX_ "msgrcv not implemented"); |
e5d73d77 | 1780 | #endif |
c2ab57d4 LW |
1781 | } |
1782 | ||
79072805 | 1783 | I32 |
864dbfa3 | 1784 | Perl_do_semop(pTHX_ SV **mark, SV **sp) |
c2ab57d4 | 1785 | { |
fe14fcc3 | 1786 | #ifdef HAS_SEM |
11343788 | 1787 | dTHR; |
79072805 | 1788 | SV *opstr; |
c2ab57d4 | 1789 | char *opbuf; |
463ee0b2 LW |
1790 | I32 id; |
1791 | STRLEN opsize; | |
c2ab57d4 | 1792 | |
463ee0b2 | 1793 | id = SvIVx(*++mark); |
79072805 | 1794 | opstr = *++mark; |
463ee0b2 | 1795 | opbuf = SvPV(opstr, opsize); |
c2ab57d4 LW |
1796 | if (opsize < sizeof(struct sembuf) |
1797 | || (opsize % sizeof(struct sembuf)) != 0) { | |
748a9306 | 1798 | SETERRNO(EINVAL,LIB$_INVARG); |
c2ab57d4 LW |
1799 | return -1; |
1800 | } | |
748a9306 | 1801 | SETERRNO(0,0); |
6e21c824 | 1802 | return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf)); |
e5d73d77 | 1803 | #else |
cea2e8a9 | 1804 | Perl_croak(aTHX_ "semop not implemented"); |
e5d73d77 | 1805 | #endif |
c2ab57d4 LW |
1806 | } |
1807 | ||
79072805 | 1808 | I32 |
864dbfa3 | 1809 | Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp) |
c2ab57d4 | 1810 | { |
fe14fcc3 | 1811 | #ifdef HAS_SHM |
11343788 | 1812 | dTHR; |
79072805 | 1813 | SV *mstr; |
c2ab57d4 | 1814 | char *mbuf, *shm; |
79072805 | 1815 | I32 id, mpos, msize; |
463ee0b2 | 1816 | STRLEN len; |
c2ab57d4 | 1817 | struct shmid_ds shmds; |
c2ab57d4 | 1818 | |
463ee0b2 | 1819 | id = SvIVx(*++mark); |
79072805 | 1820 | mstr = *++mark; |
463ee0b2 LW |
1821 | mpos = SvIVx(*++mark); |
1822 | msize = SvIVx(*++mark); | |
748a9306 | 1823 | SETERRNO(0,0); |
c2ab57d4 LW |
1824 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
1825 | return -1; | |
1826 | if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) { | |
748a9306 | 1827 | SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */ |
c2ab57d4 LW |
1828 | return -1; |
1829 | } | |
8ac85365 | 1830 | shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0); |
c2ab57d4 LW |
1831 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
1832 | return -1; | |
79072805 | 1833 | if (optype == OP_SHMREAD) { |
a0d0e21e LW |
1834 | SvPV_force(mstr, len); |
1835 | mbuf = SvGROW(mstr, msize+1); | |
1836 | ||
bee1dbe2 | 1837 | Copy(shm + mpos, mbuf, msize, char); |
79072805 LW |
1838 | SvCUR_set(mstr, msize); |
1839 | *SvEND(mstr) = '\0'; | |
a0d0e21e | 1840 | SvSETMAGIC(mstr); |
c2ab57d4 LW |
1841 | } |
1842 | else { | |
79072805 | 1843 | I32 n; |
c2ab57d4 | 1844 | |
a0d0e21e | 1845 | mbuf = SvPV(mstr, len); |
463ee0b2 | 1846 | if ((n = len) > msize) |
c2ab57d4 | 1847 | n = msize; |
bee1dbe2 | 1848 | Copy(mbuf, shm + mpos, n, char); |
c2ab57d4 | 1849 | if (n < msize) |
bee1dbe2 | 1850 | memzero(shm + mpos + n, msize - n); |
c2ab57d4 LW |
1851 | } |
1852 | return shmdt(shm); | |
e5d73d77 | 1853 | #else |
cea2e8a9 | 1854 | Perl_croak(aTHX_ "shm I/O not implemented"); |
e5d73d77 | 1855 | #endif |
c2ab57d4 LW |
1856 | } |
1857 | ||
fe14fcc3 | 1858 | #endif /* SYSV IPC */ |
4e35701f | 1859 |