Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* doio.c |
a687059c | 2 | * |
a0d0e21e | 3 | * Copyright (c) 1991-1994, 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" | |
18 | #include "perl.h" | |
19 | ||
fe14fcc3 | 20 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 | 21 | #include <sys/ipc.h> |
fe14fcc3 | 22 | #ifdef HAS_MSG |
c2ab57d4 | 23 | #include <sys/msg.h> |
e5d73d77 | 24 | #endif |
fe14fcc3 | 25 | #ifdef HAS_SEM |
c2ab57d4 | 26 | #include <sys/sem.h> |
e5d73d77 | 27 | #endif |
fe14fcc3 | 28 | #ifdef HAS_SHM |
c2ab57d4 | 29 | #include <sys/shm.h> |
a0d0e21e LW |
30 | # ifndef HAS_SHMAT_PROTOTYPE |
31 | extern Shmat_t shmat _((int, char *, int)); | |
32 | # endif | |
c2ab57d4 | 33 | #endif |
e5d73d77 | 34 | #endif |
c2ab57d4 | 35 | |
663a0e37 LW |
36 | #ifdef I_UTIME |
37 | #include <utime.h> | |
38 | #endif | |
ff8e2863 LW |
39 | #ifdef I_FCNTL |
40 | #include <fcntl.h> | |
41 | #endif | |
fe14fcc3 LW |
42 | #ifdef I_SYS_FILE |
43 | #include <sys/file.h> | |
44 | #endif | |
a687059c | 45 | |
76121258 | 46 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
47 | #include <signal.h> | |
48 | #endif | |
49 | ||
50 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ | |
51 | #ifdef I_UNISTD | |
52 | # include <unistd.h> | |
53 | #endif | |
54 | ||
232e078e AD |
55 | #if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */ |
56 | # include <sys/socket.h> | |
57 | # include <netdb.h> | |
58 | # ifndef ENOTSOCK | |
59 | # ifdef I_NET_ERRNO | |
60 | # include <net/errno.h> | |
61 | # endif | |
62 | # endif | |
63 | #endif | |
64 | ||
a687059c | 65 | bool |
c07a80fd | 66 | do_open(gv,name,len,as_raw,rawmode,rawperm,supplied_fp) |
79072805 | 67 | GV *gv; |
a687059c | 68 | register char *name; |
79072805 | 69 | I32 len; |
c07a80fd | 70 | int as_raw; |
71 | int rawmode, rawperm; | |
760ac839 | 72 | PerlIO *supplied_fp; |
a687059c | 73 | { |
a0d0e21e | 74 | register IO *io = GvIOn(gv); |
760ac839 LW |
75 | PerlIO *saveifp = Nullfp; |
76 | PerlIO *saveofp = Nullfp; | |
6e21c824 | 77 | char savetype = ' '; |
c07a80fd | 78 | int writing = 0; |
760ac839 | 79 | PerlIO *fp; |
c07a80fd | 80 | int fd; |
81 | int result; | |
a687059c | 82 | |
a687059c | 83 | forkprocess = 1; /* assume true if no fork */ |
c07a80fd | 84 | |
a0d0e21e | 85 | if (IoIFP(io)) { |
760ac839 | 86 | fd = PerlIO_fileno(IoIFP(io)); |
8990e307 | 87 | if (IoTYPE(io) == '-') |
c2ab57d4 | 88 | result = 0; |
6e21c824 | 89 | else if (fd <= maxsysfd) { |
8990e307 LW |
90 | saveifp = IoIFP(io); |
91 | saveofp = IoOFP(io); | |
92 | savetype = IoTYPE(io); | |
6e21c824 LW |
93 | result = 0; |
94 | } | |
8990e307 LW |
95 | else if (IoTYPE(io) == '|') |
96 | result = my_pclose(IoIFP(io)); | |
97 | else if (IoIFP(io) != IoOFP(io)) { | |
98 | if (IoOFP(io)) { | |
760ac839 LW |
99 | result = PerlIO_close(IoOFP(io)); |
100 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ | |
c2ab57d4 LW |
101 | } |
102 | else | |
760ac839 | 103 | result = PerlIO_close(IoIFP(io)); |
a687059c | 104 | } |
a687059c | 105 | else |
760ac839 | 106 | result = PerlIO_close(IoIFP(io)); |
6e21c824 | 107 | if (result == EOF && fd > maxsysfd) |
760ac839 | 108 | PerlIO_printf(PerlIO_stderr(), "Warning: unable to close filehandle %s properly.\n", |
79072805 | 109 | GvENAME(gv)); |
8990e307 | 110 | IoOFP(io) = IoIFP(io) = Nullfp; |
a687059c | 111 | } |
c07a80fd | 112 | |
113 | if (as_raw) { | |
114 | result = rawmode & 3; | |
115 | IoTYPE(io) = "<>++"[result]; | |
116 | writing = (result > 0); | |
117 | fd = open(name, rawmode, rawperm); | |
118 | if (fd == -1) | |
119 | fp = NULL; | |
120 | else { | |
760ac839 | 121 | fp = PerlIO_fdopen(fd, ((result == 0) ? "r" |
c07a80fd | 122 | : (result == 1) ? "w" |
123 | : "r+")); | |
124 | if (!fp) | |
125 | close(fd); | |
126 | } | |
a687059c | 127 | } |
c07a80fd | 128 | else { |
129 | char *myname; | |
130 | char mode[3]; /* stdio file mode ("r\0" or "r+\0") */ | |
131 | int dodup; | |
132 | ||
133 | myname = savepvn(name, len); | |
134 | SAVEFREEPV(myname); | |
135 | name = myname; | |
136 | while (len && isSPACE(name[len-1])) | |
137 | name[--len] = '\0'; | |
138 | ||
139 | mode[0] = mode[1] = mode[2] = '\0'; | |
140 | IoTYPE(io) = *name; | |
141 | if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */ | |
142 | mode[1] = *name++; | |
143 | --len; | |
144 | writing = 1; | |
a687059c | 145 | } |
c07a80fd | 146 | |
147 | if (*name == '|') { | |
148 | /*SUPPRESS 530*/ | |
149 | for (name++; isSPACE(*name); name++) ; | |
150 | if (strNE(name,"-")) | |
151 | TAINT_ENV(); | |
152 | TAINT_PROPER("piped open"); | |
153 | if (dowarn && name[strlen(name)-1] == '|') | |
154 | warn("Can't do bidirectional pipe"); | |
155 | fp = my_popen(name,"w"); | |
156 | writing = 1; | |
157 | } | |
158 | else if (*name == '>') { | |
159 | TAINT_PROPER("open"); | |
bf38876a | 160 | name++; |
c07a80fd | 161 | if (*name == '>') { |
162 | mode[0] = IoTYPE(io) = 'a'; | |
bf38876a | 163 | name++; |
a0d0e21e | 164 | } |
c07a80fd | 165 | else |
166 | mode[0] = 'w'; | |
167 | writing = 1; | |
168 | ||
169 | if (*name == '&') { | |
170 | duplicity: | |
171 | dodup = 1; | |
172 | name++; | |
173 | if (*name == '=') { | |
174 | dodup = 0; | |
a0d0e21e | 175 | name++; |
c07a80fd | 176 | } |
177 | if (!*name && supplied_fp) | |
178 | fp = supplied_fp; | |
a0d0e21e | 179 | else { |
c07a80fd | 180 | /*SUPPRESS 530*/ |
181 | for (; isSPACE(*name); name++) ; | |
182 | if (isDIGIT(*name)) | |
183 | fd = atoi(name); | |
184 | else { | |
185 | IO* thatio; | |
186 | gv = gv_fetchpv(name,FALSE,SVt_PVIO); | |
187 | thatio = GvIO(gv); | |
188 | if (!thatio) { | |
6e21c824 | 189 | #ifdef EINVAL |
c07a80fd | 190 | SETERRNO(EINVAL,SS$_IVCHAN); |
6e21c824 | 191 | #endif |
c07a80fd | 192 | goto say_false; |
193 | } | |
194 | if (IoIFP(thatio)) { | |
760ac839 | 195 | fd = PerlIO_fileno(IoIFP(thatio)); |
c07a80fd | 196 | if (IoTYPE(thatio) == 's') |
197 | IoTYPE(io) = 's'; | |
198 | } | |
199 | else | |
200 | fd = -1; | |
a0d0e21e | 201 | } |
fec02dd3 | 202 | if (dodup) |
c07a80fd | 203 | fd = dup(fd); |
760ac839 | 204 | if (!(fp = PerlIO_fdopen(fd,mode))) { |
c07a80fd | 205 | if (dodup) |
206 | close(fd); | |
517844ec | 207 | } |
c07a80fd | 208 | } |
bf38876a | 209 | } |
c07a80fd | 210 | else { |
211 | /*SUPPRESS 530*/ | |
212 | for (; isSPACE(*name); name++) ; | |
213 | if (strEQ(name,"-")) { | |
760ac839 | 214 | fp = PerlIO_stdout(); |
c07a80fd | 215 | IoTYPE(io) = '-'; |
216 | } | |
217 | else { | |
760ac839 | 218 | fp = PerlIO_open(name,mode); |
c07a80fd | 219 | } |
bf38876a LW |
220 | } |
221 | } | |
c07a80fd | 222 | else if (*name == '<') { |
223 | /*SUPPRESS 530*/ | |
224 | for (name++; isSPACE(*name); name++) ; | |
bf38876a | 225 | mode[0] = 'r'; |
bf38876a LW |
226 | if (*name == '&') |
227 | goto duplicity; | |
a687059c | 228 | if (strEQ(name,"-")) { |
760ac839 | 229 | fp = PerlIO_stdin(); |
8990e307 | 230 | IoTYPE(io) = '-'; |
a687059c | 231 | } |
bf38876a | 232 | else |
760ac839 | 233 | fp = PerlIO_open(name,mode); |
a687059c LW |
234 | } |
235 | else if (name[len-1] == '|') { | |
a687059c | 236 | name[--len] = '\0'; |
99b89507 | 237 | while (len && isSPACE(name[len-1])) |
a687059c | 238 | name[--len] = '\0'; |
99b89507 LW |
239 | /*SUPPRESS 530*/ |
240 | for (; isSPACE(*name); name++) ; | |
79072805 LW |
241 | if (strNE(name,"-")) |
242 | TAINT_ENV(); | |
243 | TAINT_PROPER("piped open"); | |
244 | fp = my_popen(name,"r"); | |
8990e307 | 245 | IoTYPE(io) = '|'; |
a687059c LW |
246 | } |
247 | else { | |
8990e307 | 248 | IoTYPE(io) = '<'; |
99b89507 LW |
249 | /*SUPPRESS 530*/ |
250 | for (; isSPACE(*name); name++) ; | |
a687059c | 251 | if (strEQ(name,"-")) { |
760ac839 | 252 | fp = PerlIO_stdin(); |
8990e307 | 253 | IoTYPE(io) = '-'; |
a687059c LW |
254 | } |
255 | else | |
760ac839 | 256 | fp = PerlIO_open(name,"r"); |
a687059c LW |
257 | } |
258 | } | |
bee1dbe2 | 259 | if (!fp) { |
8990e307 | 260 | if (dowarn && IoTYPE(io) == '<' && strchr(name, '\n')) |
bee1dbe2 | 261 | warn(warn_nl, "open"); |
6e21c824 | 262 | goto say_false; |
bee1dbe2 | 263 | } |
8990e307 LW |
264 | if (IoTYPE(io) && |
265 | IoTYPE(io) != '|' && IoTYPE(io) != '-') { | |
760ac839 LW |
266 | if (Fstat(PerlIO_fileno(fp),&statbuf) < 0) { |
267 | (void)PerlIO_close(fp); | |
6e21c824 | 268 | goto say_false; |
a687059c | 269 | } |
1462b684 | 270 | if (S_ISSOCK(statbuf.st_mode)) |
8990e307 | 271 | IoTYPE(io) = 's'; /* in case a socket was passed in to us */ |
99b89507 LW |
272 | #ifdef HAS_SOCKET |
273 | else if ( | |
c623bd54 | 274 | #ifdef S_IFMT |
99b89507 LW |
275 | !(statbuf.st_mode & S_IFMT) |
276 | #else | |
277 | !statbuf.st_mode | |
278 | #endif | |
279 | ) { | |
a0d0e21e | 280 | int buflen = sizeof tokenbuf; |
760ac839 | 281 | if (getsockname(PerlIO_fileno(fp), (struct sockaddr *)tokenbuf, &buflen) >= 0 |
bee1dbe2 | 282 | || errno != ENOTSOCK) |
8990e307 | 283 | IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */ |
99b89507 LW |
284 | /* but some return 0 for streams too, sigh */ |
285 | } | |
bf38876a | 286 | #endif |
a687059c | 287 | } |
6e21c824 | 288 | if (saveifp) { /* must use old fp? */ |
760ac839 | 289 | fd = PerlIO_fileno(saveifp); |
6e21c824 | 290 | if (saveofp) { |
760ac839 | 291 | PerlIO_flush(saveofp); /* emulate PerlIO_close() */ |
6e21c824 | 292 | if (saveofp != saveifp) { /* was a socket? */ |
760ac839 | 293 | PerlIO_close(saveofp); |
99b89507 LW |
294 | if (fd > 2) |
295 | Safefree(saveofp); | |
6e21c824 LW |
296 | } |
297 | } | |
760ac839 | 298 | if (fd != PerlIO_fileno(fp)) { |
bee1dbe2 | 299 | int pid; |
79072805 | 300 | SV *sv; |
bee1dbe2 | 301 | |
760ac839 LW |
302 | dup2(PerlIO_fileno(fp), fd); |
303 | sv = *av_fetch(fdpid,PerlIO_fileno(fp),TRUE); | |
a0d0e21e | 304 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 LW |
305 | pid = SvIVX(sv); |
306 | SvIVX(sv) = 0; | |
79072805 | 307 | sv = *av_fetch(fdpid,fd,TRUE); |
a0d0e21e | 308 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 | 309 | SvIVX(sv) = pid; |
760ac839 | 310 | PerlIO_close(fp); |
bee1dbe2 | 311 | |
6e21c824 LW |
312 | } |
313 | fp = saveifp; | |
760ac839 | 314 | PerlIO_clearerr(fp); |
6e21c824 | 315 | } |
a0d0e21e | 316 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
760ac839 | 317 | fd = PerlIO_fileno(fp); |
a0d0e21e | 318 | fcntl(fd,F_SETFD,fd > maxsysfd); |
1462b684 | 319 | #endif |
8990e307 | 320 | IoIFP(io) = fp; |
bf38876a | 321 | if (writing) { |
8990e307 LW |
322 | if (IoTYPE(io) == 's' |
323 | || (IoTYPE(io) == '>' && S_ISCHR(statbuf.st_mode)) ) { | |
760ac839 LW |
324 | if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) { |
325 | PerlIO_close(fp); | |
8990e307 | 326 | IoIFP(io) = Nullfp; |
6e21c824 | 327 | goto say_false; |
fe14fcc3 | 328 | } |
1462b684 LW |
329 | } |
330 | else | |
8990e307 | 331 | IoOFP(io) = fp; |
bf38876a | 332 | } |
a687059c | 333 | return TRUE; |
6e21c824 LW |
334 | |
335 | say_false: | |
8990e307 LW |
336 | IoIFP(io) = saveifp; |
337 | IoOFP(io) = saveofp; | |
338 | IoTYPE(io) = savetype; | |
6e21c824 | 339 | return FALSE; |
a687059c LW |
340 | } |
341 | ||
760ac839 | 342 | PerlIO * |
79072805 LW |
343 | nextargv(gv) |
344 | register GV *gv; | |
a687059c | 345 | { |
79072805 | 346 | register SV *sv; |
99b89507 | 347 | #ifndef FLEXFILENAMES |
c623bd54 LW |
348 | int filedev; |
349 | int fileino; | |
99b89507 | 350 | #endif |
c623bd54 LW |
351 | int fileuid; |
352 | int filegid; | |
fe14fcc3 | 353 | |
79072805 | 354 | if (!argvoutgv) |
85e6fe83 | 355 | argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO); |
fe14fcc3 | 356 | if (filemode & (S_ISUID|S_ISGID)) { |
760ac839 | 357 | PerlIO_flush(IoIFP(GvIOn(argvoutgv))); /* chmod must follow last write */ |
fe14fcc3 LW |
358 | #ifdef HAS_FCHMOD |
359 | (void)fchmod(lastfd,filemode); | |
360 | #else | |
361 | (void)chmod(oldname,filemode); | |
362 | #endif | |
363 | } | |
364 | filemode = 0; | |
79072805 | 365 | while (av_len(GvAV(gv)) >= 0) { |
463ee0b2 | 366 | STRLEN len; |
79072805 | 367 | sv = av_shift(GvAV(gv)); |
8990e307 | 368 | SAVEFREESV(sv); |
79072805 LW |
369 | sv_setsv(GvSV(gv),sv); |
370 | SvSETMAGIC(GvSV(gv)); | |
463ee0b2 | 371 | oldname = SvPVx(GvSV(gv), len); |
c07a80fd | 372 | if (do_open(gv,oldname,len,FALSE,0,0,Nullfp)) { |
a687059c | 373 | if (inplace) { |
79072805 | 374 | TAINT_PROPER("inplace open"); |
c623bd54 | 375 | if (strEQ(oldname,"-")) { |
4633a7c4 | 376 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a0d0e21e | 377 | return IoIFP(GvIOp(gv)); |
c623bd54 | 378 | } |
99b89507 | 379 | #ifndef FLEXFILENAMES |
c623bd54 LW |
380 | filedev = statbuf.st_dev; |
381 | fileino = statbuf.st_ino; | |
99b89507 | 382 | #endif |
a687059c LW |
383 | filemode = statbuf.st_mode; |
384 | fileuid = statbuf.st_uid; | |
385 | filegid = statbuf.st_gid; | |
c623bd54 LW |
386 | if (!S_ISREG(filemode)) { |
387 | warn("Can't do inplace edit: %s is not a regular file", | |
388 | oldname ); | |
79072805 | 389 | do_close(gv,FALSE); |
c623bd54 LW |
390 | continue; |
391 | } | |
a687059c | 392 | if (*inplace) { |
ff8e2863 | 393 | #ifdef SUFFIX |
79072805 | 394 | add_suffix(sv,inplace); |
ff8e2863 | 395 | #else |
79072805 | 396 | sv_catpv(sv,inplace); |
ff8e2863 | 397 | #endif |
c623bd54 | 398 | #ifndef FLEXFILENAMES |
a0d0e21e | 399 | if (Stat(SvPVX(sv),&statbuf) >= 0 |
c623bd54 LW |
400 | && statbuf.st_dev == filedev |
401 | && statbuf.st_ino == fileino ) { | |
402 | warn("Can't do inplace edit: %s > 14 characters", | |
463ee0b2 | 403 | SvPVX(sv) ); |
79072805 | 404 | do_close(gv,FALSE); |
c623bd54 LW |
405 | continue; |
406 | } | |
407 | #endif | |
fe14fcc3 | 408 | #ifdef HAS_RENAME |
bee1dbe2 | 409 | #ifndef DOSISH |
463ee0b2 | 410 | if (rename(oldname,SvPVX(sv)) < 0) { |
c623bd54 | 411 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 | 412 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 | 413 | do_close(gv,FALSE); |
c623bd54 LW |
414 | continue; |
415 | } | |
a687059c | 416 | #else |
79072805 | 417 | do_close(gv,FALSE); |
463ee0b2 LW |
418 | (void)unlink(SvPVX(sv)); |
419 | (void)rename(oldname,SvPVX(sv)); | |
1193dd27 | 420 | do_open(gv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp); |
55497cff | 421 | #endif /* DOSISH */ |
ff8e2863 | 422 | #else |
463ee0b2 LW |
423 | (void)UNLINK(SvPVX(sv)); |
424 | if (link(oldname,SvPVX(sv)) < 0) { | |
c623bd54 | 425 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 | 426 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 | 427 | do_close(gv,FALSE); |
c623bd54 LW |
428 | continue; |
429 | } | |
a687059c LW |
430 | (void)UNLINK(oldname); |
431 | #endif | |
432 | } | |
433 | else { | |
a8c18271 | 434 | #if !defined(DOSISH) && !defined(AMIGAOS) |
edc7bc49 | 435 | # ifndef VMS /* Don't delete; use automatic file versioning */ |
fe14fcc3 LW |
436 | if (UNLINK(oldname) < 0) { |
437 | warn("Can't rename %s to %s: %s, skipping file", | |
2304df62 | 438 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 | 439 | do_close(gv,FALSE); |
fe14fcc3 LW |
440 | continue; |
441 | } | |
edc7bc49 | 442 | # endif |
ff8e2863 | 443 | #else |
463ee0b2 | 444 | croak("Can't do inplace edit without backup"); |
ff8e2863 | 445 | #endif |
a687059c LW |
446 | } |
447 | ||
79072805 LW |
448 | sv_setpvn(sv,">",1); |
449 | sv_catpv(sv,oldname); | |
748a9306 | 450 | SETERRNO(0,0); /* in case sprintf set errno */ |
c07a80fd | 451 | if (!do_open(argvoutgv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp)) { |
c623bd54 | 452 | warn("Can't do inplace edit on %s: %s", |
2304df62 | 453 | oldname, Strerror(errno) ); |
79072805 | 454 | do_close(gv,FALSE); |
fe14fcc3 LW |
455 | continue; |
456 | } | |
4633a7c4 | 457 | setdefout(argvoutgv); |
760ac839 | 458 | lastfd = PerlIO_fileno(IoIFP(GvIOp(argvoutgv))); |
a0d0e21e | 459 | (void)Fstat(lastfd,&statbuf); |
fe14fcc3 LW |
460 | #ifdef HAS_FCHMOD |
461 | (void)fchmod(lastfd,filemode); | |
a687059c LW |
462 | #else |
463 | (void)chmod(oldname,filemode); | |
464 | #endif | |
fe14fcc3 LW |
465 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
466 | #ifdef HAS_FCHOWN | |
467 | (void)fchown(lastfd,fileuid,filegid); | |
a687059c | 468 | #else |
fe14fcc3 LW |
469 | #ifdef HAS_CHOWN |
470 | (void)chown(oldname,fileuid,filegid); | |
a687059c | 471 | #endif |
b1248f16 | 472 | #endif |
fe14fcc3 | 473 | } |
a687059c | 474 | } |
a0d0e21e | 475 | return IoIFP(GvIOp(gv)); |
a687059c LW |
476 | } |
477 | else | |
760ac839 | 478 | PerlIO_printf(PerlIO_stderr(), "Can't open %s: %s\n",SvPV(sv, na), Strerror(errno)); |
a687059c LW |
479 | } |
480 | if (inplace) { | |
79072805 | 481 | (void)do_close(argvoutgv,FALSE); |
4633a7c4 | 482 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a687059c LW |
483 | } |
484 | return Nullfp; | |
485 | } | |
486 | ||
fe14fcc3 | 487 | #ifdef HAS_PIPE |
afd9f252 | 488 | void |
79072805 LW |
489 | do_pipe(sv, rgv, wgv) |
490 | SV *sv; | |
491 | GV *rgv; | |
492 | GV *wgv; | |
afd9f252 | 493 | { |
79072805 LW |
494 | register IO *rstio; |
495 | register IO *wstio; | |
afd9f252 LW |
496 | int fd[2]; |
497 | ||
79072805 | 498 | if (!rgv) |
afd9f252 | 499 | goto badexit; |
79072805 | 500 | if (!wgv) |
afd9f252 LW |
501 | goto badexit; |
502 | ||
a0d0e21e LW |
503 | rstio = GvIOn(rgv); |
504 | wstio = GvIOn(wgv); | |
afd9f252 | 505 | |
a0d0e21e | 506 | if (IoIFP(rstio)) |
79072805 | 507 | do_close(rgv,FALSE); |
a0d0e21e | 508 | if (IoIFP(wstio)) |
79072805 | 509 | do_close(wgv,FALSE); |
afd9f252 LW |
510 | |
511 | if (pipe(fd) < 0) | |
512 | goto badexit; | |
760ac839 LW |
513 | IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"); |
514 | IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"); | |
8990e307 LW |
515 | IoIFP(wstio) = IoOFP(wstio); |
516 | IoTYPE(rstio) = '<'; | |
517 | IoTYPE(wstio) = '>'; | |
518 | if (!IoIFP(rstio) || !IoOFP(wstio)) { | |
760ac839 | 519 | if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio)); |
fe14fcc3 | 520 | else close(fd[0]); |
760ac839 | 521 | if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio)); |
fe14fcc3 LW |
522 | else close(fd[1]); |
523 | goto badexit; | |
524 | } | |
afd9f252 | 525 | |
79072805 | 526 | sv_setsv(sv,&sv_yes); |
afd9f252 LW |
527 | return; |
528 | ||
529 | badexit: | |
79072805 | 530 | sv_setsv(sv,&sv_undef); |
afd9f252 LW |
531 | return; |
532 | } | |
b1248f16 | 533 | #endif |
afd9f252 | 534 | |
517844ec | 535 | /* explicit renamed to avoid C++ conflict -- kja */ |
a687059c | 536 | bool |
a0d0e21e | 537 | #ifndef CAN_PROTOTYPE |
517844ec | 538 | do_close(gv,not_implicit) |
79072805 | 539 | GV *gv; |
517844ec | 540 | bool not_implicit; |
8990e307 | 541 | #else |
517844ec | 542 | do_close(GV *gv, bool not_implicit) |
a0d0e21e | 543 | #endif /* CAN_PROTOTYPE */ |
a687059c | 544 | { |
1193dd27 IZ |
545 | bool retval; |
546 | IO *io; | |
a687059c | 547 | |
79072805 LW |
548 | if (!gv) |
549 | gv = argvgv; | |
a0d0e21e | 550 | if (!gv || SvTYPE(gv) != SVt_PVGV) { |
748a9306 | 551 | SETERRNO(EBADF,SS$_IVCHAN); |
c2ab57d4 | 552 | return FALSE; |
99b89507 | 553 | } |
79072805 LW |
554 | io = GvIO(gv); |
555 | if (!io) { /* never opened */ | |
517844ec | 556 | if (dowarn && not_implicit) |
79072805 | 557 | warn("Close on unopened file <%s>",GvENAME(gv)); |
a687059c LW |
558 | return FALSE; |
559 | } | |
1193dd27 | 560 | retval = io_close(io); |
517844ec | 561 | if (not_implicit) { |
1193dd27 IZ |
562 | IoLINES(io) = 0; |
563 | IoPAGE(io) = 0; | |
564 | IoLINES_LEFT(io) = IoPAGE_LEN(io); | |
565 | } | |
566 | IoTYPE(io) = ' '; | |
567 | return retval; | |
568 | } | |
569 | ||
570 | bool | |
571 | io_close(io) | |
572 | IO* io; | |
573 | { | |
574 | bool retval = FALSE; | |
575 | int status; | |
576 | ||
8990e307 LW |
577 | if (IoIFP(io)) { |
578 | if (IoTYPE(io) == '|') { | |
579 | status = my_pclose(IoIFP(io)); | |
c623bd54 | 580 | retval = (status == 0); |
748a9306 | 581 | statusvalue = FIXSTATUS(status); |
a687059c | 582 | } |
8990e307 | 583 | else if (IoTYPE(io) == '-') |
a687059c LW |
584 | retval = TRUE; |
585 | else { | |
8990e307 | 586 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */ |
760ac839 LW |
587 | retval = (PerlIO_close(IoOFP(io)) != EOF); |
588 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ | |
c2ab57d4 LW |
589 | } |
590 | else | |
760ac839 | 591 | retval = (PerlIO_close(IoIFP(io)) != EOF); |
a687059c | 592 | } |
8990e307 | 593 | IoOFP(io) = IoIFP(io) = Nullfp; |
79072805 | 594 | } |
1193dd27 | 595 | |
a687059c LW |
596 | return retval; |
597 | } | |
598 | ||
599 | bool | |
79072805 LW |
600 | do_eof(gv) |
601 | GV *gv; | |
a687059c | 602 | { |
79072805 | 603 | register IO *io; |
a687059c LW |
604 | int ch; |
605 | ||
79072805 | 606 | io = GvIO(gv); |
a687059c | 607 | |
79072805 | 608 | if (!io) |
a687059c LW |
609 | return TRUE; |
610 | ||
8990e307 | 611 | while (IoIFP(io)) { |
a687059c | 612 | |
760ac839 LW |
613 | if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */ |
614 | if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */ | |
615 | return FALSE; /* this is the most usual case */ | |
616 | } | |
a687059c | 617 | |
760ac839 | 618 | ch = PerlIO_getc(IoIFP(io)); |
a687059c | 619 | if (ch != EOF) { |
760ac839 | 620 | (void)PerlIO_ungetc(IoIFP(io),ch); |
a687059c LW |
621 | return FALSE; |
622 | } | |
760ac839 LW |
623 | if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) { |
624 | if (PerlIO_get_cnt(IoIFP(io)) < -1) | |
625 | PerlIO_set_cnt(IoIFP(io),-1); | |
626 | } | |
8990e307 | 627 | if (op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */ |
79072805 | 628 | if (!nextargv(argvgv)) /* get another fp handy */ |
a687059c LW |
629 | return TRUE; |
630 | } | |
631 | else | |
632 | return TRUE; /* normal fp, definitely end of file */ | |
633 | } | |
634 | return TRUE; | |
635 | } | |
636 | ||
637 | long | |
79072805 LW |
638 | do_tell(gv) |
639 | GV *gv; | |
a687059c | 640 | { |
79072805 | 641 | register IO *io; |
a687059c | 642 | |
79072805 | 643 | if (!gv) |
a687059c LW |
644 | goto phooey; |
645 | ||
79072805 | 646 | io = GvIO(gv); |
8990e307 | 647 | if (!io || !IoIFP(io)) |
a687059c LW |
648 | goto phooey; |
649 | ||
bee1dbe2 | 650 | #ifdef ULTRIX_STDIO_BOTCH |
760ac839 LW |
651 | if (PerlIO_eof(IoIFP(io))) |
652 | (void)PerlIO_seek (IoIFP(io), 0L, 2); /* ultrix 1.2 workaround */ | |
bee1dbe2 | 653 | #endif |
a687059c | 654 | |
760ac839 | 655 | return PerlIO_tell(IoIFP(io)); |
a687059c LW |
656 | |
657 | phooey: | |
658 | if (dowarn) | |
659 | warn("tell() on unopened file"); | |
748a9306 | 660 | SETERRNO(EBADF,RMS$_IFI); |
a687059c LW |
661 | return -1L; |
662 | } | |
663 | ||
664 | bool | |
79072805 LW |
665 | do_seek(gv, pos, whence) |
666 | GV *gv; | |
a687059c LW |
667 | long pos; |
668 | int whence; | |
669 | { | |
79072805 | 670 | register IO *io; |
a687059c | 671 | |
79072805 | 672 | if (!gv) |
a687059c LW |
673 | goto nuts; |
674 | ||
79072805 | 675 | io = GvIO(gv); |
8990e307 | 676 | if (!io || !IoIFP(io)) |
a687059c LW |
677 | goto nuts; |
678 | ||
bee1dbe2 | 679 | #ifdef ULTRIX_STDIO_BOTCH |
760ac839 LW |
680 | if (PerlIO_eof(IoIFP(io))) |
681 | (void)PerlIO_seek (IoIFP(io), 0L, 2); /* ultrix 1.2 workaround */ | |
bee1dbe2 | 682 | #endif |
a687059c | 683 | |
760ac839 | 684 | return PerlIO_seek(IoIFP(io), pos, whence) >= 0; |
a687059c LW |
685 | |
686 | nuts: | |
687 | if (dowarn) | |
688 | warn("seek() on unopened file"); | |
748a9306 | 689 | SETERRNO(EBADF,RMS$_IFI); |
a687059c LW |
690 | return FALSE; |
691 | } | |
692 | ||
a0d0e21e | 693 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP) |
c2ab57d4 | 694 | /* code courtesy of William Kucharski */ |
fe14fcc3 | 695 | #define HAS_CHSIZE |
6eb13c3b | 696 | |
517844ec | 697 | I32 my_chsize(fd, length) |
79072805 | 698 | I32 fd; /* file descriptor */ |
85e6fe83 | 699 | Off_t length; /* length to set file to */ |
6eb13c3b LW |
700 | { |
701 | extern long lseek(); | |
702 | struct flock fl; | |
703 | struct stat filebuf; | |
704 | ||
a0d0e21e | 705 | if (Fstat(fd, &filebuf) < 0) |
6eb13c3b LW |
706 | return -1; |
707 | ||
708 | if (filebuf.st_size < length) { | |
709 | ||
710 | /* extend file length */ | |
711 | ||
712 | if ((lseek(fd, (length - 1), 0)) < 0) | |
713 | return -1; | |
714 | ||
715 | /* write a "0" byte */ | |
716 | ||
717 | if ((write(fd, "", 1)) != 1) | |
718 | return -1; | |
719 | } | |
720 | else { | |
721 | /* truncate length */ | |
722 | ||
723 | fl.l_whence = 0; | |
724 | fl.l_len = 0; | |
725 | fl.l_start = length; | |
a0d0e21e | 726 | fl.l_type = F_WRLCK; /* write lock on file space */ |
6eb13c3b LW |
727 | |
728 | /* | |
a0d0e21e | 729 | * This relies on the UNDOCUMENTED F_FREESP argument to |
6eb13c3b LW |
730 | * fcntl(2), which truncates the file so that it ends at the |
731 | * position indicated by fl.l_start. | |
732 | * | |
733 | * Will minor miracles never cease? | |
734 | */ | |
735 | ||
a0d0e21e | 736 | if (fcntl(fd, F_FREESP, &fl) < 0) |
6eb13c3b LW |
737 | return -1; |
738 | ||
739 | } | |
740 | ||
741 | return 0; | |
742 | } | |
a0d0e21e | 743 | #endif /* F_FREESP */ |
ff8e2863 | 744 | |
a687059c | 745 | bool |
79072805 LW |
746 | do_print(sv,fp) |
747 | register SV *sv; | |
760ac839 | 748 | PerlIO *fp; |
a687059c LW |
749 | { |
750 | register char *tmps; | |
463ee0b2 | 751 | STRLEN len; |
a687059c | 752 | |
79072805 LW |
753 | /* assuming fp is checked earlier */ |
754 | if (!sv) | |
755 | return TRUE; | |
756 | if (ofmt) { | |
8990e307 | 757 | if (SvGMAGICAL(sv)) |
79072805 | 758 | mg_get(sv); |
463ee0b2 | 759 | if (SvIOK(sv) && SvIVX(sv) != 0) { |
760ac839 LW |
760 | PerlIO_printf(fp, ofmt, (double)SvIVX(sv)); |
761 | return !PerlIO_error(fp); | |
79072805 | 762 | } |
463ee0b2 | 763 | if ( (SvNOK(sv) && SvNVX(sv) != 0.0) |
79072805 | 764 | || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) { |
760ac839 LW |
765 | PerlIO_printf(fp, ofmt, SvNVX(sv)); |
766 | return !PerlIO_error(fp); | |
79072805 | 767 | } |
a687059c | 768 | } |
79072805 LW |
769 | switch (SvTYPE(sv)) { |
770 | case SVt_NULL: | |
8990e307 LW |
771 | if (dowarn) |
772 | warn(warn_uninit); | |
ff8e2863 | 773 | return TRUE; |
79072805 | 774 | case SVt_IV: |
a0d0e21e LW |
775 | if (SvIOK(sv)) { |
776 | if (SvGMAGICAL(sv)) | |
777 | mg_get(sv); | |
760ac839 LW |
778 | PerlIO_printf(fp, "%ld", (long)SvIVX(sv)); |
779 | return !PerlIO_error(fp); | |
a0d0e21e LW |
780 | } |
781 | /* FALL THROUGH */ | |
79072805 | 782 | default: |
463ee0b2 | 783 | tmps = SvPV(sv, len); |
79072805 | 784 | break; |
ff8e2863 | 785 | } |
760ac839 | 786 | if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp))) |
a687059c | 787 | return FALSE; |
760ac839 | 788 | return !PerlIO_error(fp); |
a687059c LW |
789 | } |
790 | ||
79072805 LW |
791 | I32 |
792 | my_stat(ARGS) | |
793 | dARGS | |
a687059c | 794 | { |
79072805 LW |
795 | dSP; |
796 | IO *io; | |
748a9306 | 797 | GV* tmpgv; |
79072805 | 798 | |
a0d0e21e | 799 | if (op->op_flags & OPf_REF) { |
79072805 | 800 | EXTEND(sp,1); |
748a9306 LW |
801 | tmpgv = cGVOP->op_gv; |
802 | do_fstat: | |
803 | io = GvIO(tmpgv); | |
8990e307 | 804 | if (io && IoIFP(io)) { |
748a9306 | 805 | statgv = tmpgv; |
79072805 LW |
806 | sv_setpv(statname,""); |
807 | laststype = OP_STAT; | |
760ac839 | 808 | return (laststatval = Fstat(PerlIO_fileno(IoIFP(io)), &statcache)); |
a687059c LW |
809 | } |
810 | else { | |
748a9306 | 811 | if (tmpgv == defgv) |
57ebbfd0 | 812 | return laststatval; |
a687059c LW |
813 | if (dowarn) |
814 | warn("Stat on unopened file <%s>", | |
748a9306 | 815 | GvENAME(tmpgv)); |
79072805 LW |
816 | statgv = Nullgv; |
817 | sv_setpv(statname,""); | |
57ebbfd0 | 818 | return (laststatval = -1); |
a687059c LW |
819 | } |
820 | } | |
821 | else { | |
748a9306 | 822 | SV* sv = POPs; |
79072805 | 823 | PUTBACK; |
748a9306 LW |
824 | if (SvTYPE(sv) == SVt_PVGV) { |
825 | tmpgv = (GV*)sv; | |
826 | goto do_fstat; | |
827 | } | |
828 | else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) { | |
829 | tmpgv = (GV*)SvRV(sv); | |
830 | goto do_fstat; | |
831 | } | |
832 | ||
79072805 | 833 | statgv = Nullgv; |
463ee0b2 | 834 | sv_setpv(statname,SvPV(sv, na)); |
79072805 | 835 | laststype = OP_STAT; |
a0d0e21e | 836 | laststatval = Stat(SvPV(sv, na),&statcache); |
463ee0b2 | 837 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 LW |
838 | warn(warn_nl, "stat"); |
839 | return laststatval; | |
a687059c LW |
840 | } |
841 | } | |
842 | ||
79072805 LW |
843 | I32 |
844 | my_lstat(ARGS) | |
845 | dARGS | |
c623bd54 | 846 | { |
79072805 LW |
847 | dSP; |
848 | SV *sv; | |
a0d0e21e | 849 | if (op->op_flags & OPf_REF) { |
79072805 LW |
850 | EXTEND(sp,1); |
851 | if (cGVOP->op_gv == defgv) { | |
852 | if (laststype != OP_LSTAT) | |
463ee0b2 | 853 | croak("The stat preceding -l _ wasn't an lstat"); |
fe14fcc3 LW |
854 | return laststatval; |
855 | } | |
463ee0b2 | 856 | croak("You can't use -l on a filehandle"); |
fe14fcc3 | 857 | } |
c623bd54 | 858 | |
79072805 LW |
859 | laststype = OP_LSTAT; |
860 | statgv = Nullgv; | |
861 | sv = POPs; | |
862 | PUTBACK; | |
463ee0b2 | 863 | sv_setpv(statname,SvPV(sv, na)); |
fe14fcc3 | 864 | #ifdef HAS_LSTAT |
463ee0b2 | 865 | laststatval = lstat(SvPV(sv, na),&statcache); |
c623bd54 | 866 | #else |
a0d0e21e | 867 | laststatval = Stat(SvPV(sv, na),&statcache); |
c623bd54 | 868 | #endif |
463ee0b2 | 869 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 LW |
870 | warn(warn_nl, "lstat"); |
871 | return laststatval; | |
c623bd54 LW |
872 | } |
873 | ||
a687059c | 874 | bool |
79072805 LW |
875 | do_aexec(really,mark,sp) |
876 | SV *really; | |
877 | register SV **mark; | |
878 | register SV **sp; | |
a687059c | 879 | { |
a687059c | 880 | register char **a; |
a687059c LW |
881 | char *tmps; |
882 | ||
79072805 LW |
883 | if (sp > mark) { |
884 | New(401,Argv, sp - mark + 1, char*); | |
bee1dbe2 | 885 | a = Argv; |
79072805 LW |
886 | while (++mark <= sp) { |
887 | if (*mark) | |
463ee0b2 | 888 | *a++ = SvPVx(*mark, na); |
a687059c LW |
889 | else |
890 | *a++ = ""; | |
891 | } | |
892 | *a = Nullch; | |
bee1dbe2 | 893 | if (*Argv[0] != '/') /* will execvp use PATH? */ |
79072805 | 894 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
463ee0b2 | 895 | if (really && *(tmps = SvPV(really, na))) |
bee1dbe2 | 896 | execvp(tmps,Argv); |
a687059c | 897 | else |
bee1dbe2 | 898 | execvp(Argv[0],Argv); |
a0d0e21e LW |
899 | if (dowarn) |
900 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); | |
a687059c | 901 | } |
bee1dbe2 | 902 | do_execfree(); |
a687059c LW |
903 | return FALSE; |
904 | } | |
905 | ||
fe14fcc3 | 906 | void |
ff8e2863 LW |
907 | do_execfree() |
908 | { | |
909 | if (Argv) { | |
910 | Safefree(Argv); | |
911 | Argv = Null(char **); | |
912 | } | |
913 | if (Cmd) { | |
914 | Safefree(Cmd); | |
915 | Cmd = Nullch; | |
916 | } | |
917 | } | |
918 | ||
760ac839 LW |
919 | #ifndef OS2 |
920 | ||
a687059c LW |
921 | bool |
922 | do_exec(cmd) | |
923 | char *cmd; | |
924 | { | |
925 | register char **a; | |
926 | register char *s; | |
a687059c LW |
927 | char flags[10]; |
928 | ||
748a9306 LW |
929 | while (*cmd && isSPACE(*cmd)) |
930 | cmd++; | |
931 | ||
a687059c LW |
932 | /* save an extra exec if possible */ |
933 | ||
bf38876a LW |
934 | #ifdef CSH |
935 | if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) { | |
a687059c | 936 | strcpy(flags,"-c"); |
bf38876a | 937 | s = cmd+cshlen+3; |
a687059c LW |
938 | if (*s == 'f') { |
939 | s++; | |
940 | strcat(flags,"f"); | |
941 | } | |
942 | if (*s == ' ') | |
943 | s++; | |
944 | if (*s++ == '\'') { | |
945 | char *ncmd = s; | |
946 | ||
947 | while (*s) | |
948 | s++; | |
949 | if (s[-1] == '\n') | |
950 | *--s = '\0'; | |
951 | if (s[-1] == '\'') { | |
952 | *--s = '\0'; | |
bf38876a | 953 | execl(cshname,"csh", flags,ncmd,(char*)0); |
a687059c LW |
954 | *s = '\''; |
955 | return FALSE; | |
956 | } | |
957 | } | |
958 | } | |
bf38876a | 959 | #endif /* CSH */ |
a687059c LW |
960 | |
961 | /* see if there are shell metacharacters in it */ | |
962 | ||
748a9306 LW |
963 | if (*cmd == '.' && isSPACE(cmd[1])) |
964 | goto doshell; | |
965 | ||
966 | if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4])) | |
967 | goto doshell; | |
968 | ||
99b89507 | 969 | for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */ |
63f2c1e1 LW |
970 | if (*s == '=') |
971 | goto doshell; | |
748a9306 | 972 | |
a687059c | 973 | for (s = cmd; *s; s++) { |
93a17b20 | 974 | if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c LW |
975 | if (*s == '\n' && !s[1]) { |
976 | *s = '\0'; | |
977 | break; | |
978 | } | |
979 | doshell: | |
ff68c719 | 980 | execl(sh_path, "sh", "-c", cmd, (char*)0); |
a687059c LW |
981 | return FALSE; |
982 | } | |
983 | } | |
748a9306 | 984 | |
ff8e2863 | 985 | New(402,Argv, (s - cmd) / 2 + 2, char*); |
a0d0e21e | 986 | Cmd = savepvn(cmd, s-cmd); |
ff8e2863 LW |
987 | a = Argv; |
988 | for (s = Cmd; *s;) { | |
99b89507 | 989 | while (*s && isSPACE(*s)) s++; |
a687059c LW |
990 | if (*s) |
991 | *(a++) = s; | |
99b89507 | 992 | while (*s && !isSPACE(*s)) s++; |
a687059c LW |
993 | if (*s) |
994 | *s++ = '\0'; | |
995 | } | |
996 | *a = Nullch; | |
ff8e2863 LW |
997 | if (Argv[0]) { |
998 | execvp(Argv[0],Argv); | |
b1248f16 | 999 | if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
ff8e2863 | 1000 | do_execfree(); |
a687059c | 1001 | goto doshell; |
b1248f16 | 1002 | } |
a0d0e21e LW |
1003 | if (dowarn) |
1004 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); | |
a687059c | 1005 | } |
ff8e2863 | 1006 | do_execfree(); |
a687059c LW |
1007 | return FALSE; |
1008 | } | |
1009 | ||
55497cff | 1010 | #endif /* OS2 */ |
760ac839 | 1011 | |
79072805 LW |
1012 | I32 |
1013 | apply(type,mark,sp) | |
1014 | I32 type; | |
1015 | register SV **mark; | |
1016 | register SV **sp; | |
a687059c | 1017 | { |
79072805 LW |
1018 | register I32 val; |
1019 | register I32 val2; | |
1020 | register I32 tot = 0; | |
a687059c | 1021 | char *s; |
79072805 | 1022 | SV **oldmark = mark; |
a687059c | 1023 | |
463ee0b2 LW |
1024 | if (tainting) { |
1025 | while (++mark <= sp) { | |
bbce6d69 | 1026 | if (SvTAINTED(*mark)) { |
1027 | TAINT; | |
1028 | break; | |
1029 | } | |
463ee0b2 LW |
1030 | } |
1031 | mark = oldmark; | |
1032 | } | |
a687059c | 1033 | switch (type) { |
79072805 LW |
1034 | case OP_CHMOD: |
1035 | TAINT_PROPER("chmod"); | |
1036 | if (++mark <= sp) { | |
1037 | tot = sp - mark; | |
463ee0b2 | 1038 | val = SvIVx(*mark); |
79072805 | 1039 | while (++mark <= sp) { |
463ee0b2 | 1040 | if (chmod(SvPVx(*mark, na),val)) |
a687059c LW |
1041 | tot--; |
1042 | } | |
1043 | } | |
1044 | break; | |
fe14fcc3 | 1045 | #ifdef HAS_CHOWN |
79072805 LW |
1046 | case OP_CHOWN: |
1047 | TAINT_PROPER("chown"); | |
1048 | if (sp - mark > 2) { | |
463ee0b2 LW |
1049 | val = SvIVx(*++mark); |
1050 | val2 = SvIVx(*++mark); | |
a0d0e21e | 1051 | tot = sp - mark; |
79072805 | 1052 | while (++mark <= sp) { |
463ee0b2 | 1053 | if (chown(SvPVx(*mark, na),val,val2)) |
a687059c LW |
1054 | tot--; |
1055 | } | |
1056 | } | |
1057 | break; | |
b1248f16 | 1058 | #endif |
fe14fcc3 | 1059 | #ifdef HAS_KILL |
79072805 LW |
1060 | case OP_KILL: |
1061 | TAINT_PROPER("kill"); | |
55497cff | 1062 | if (mark == sp) |
1063 | break; | |
463ee0b2 | 1064 | s = SvPVx(*++mark, na); |
79072805 LW |
1065 | tot = sp - mark; |
1066 | if (isUPPER(*s)) { | |
1067 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') | |
1068 | s += 3; | |
1069 | if (!(val = whichsig(s))) | |
463ee0b2 | 1070 | croak("Unrecognized signal name \"%s\"",s); |
79072805 LW |
1071 | } |
1072 | else | |
463ee0b2 | 1073 | val = SvIVx(*mark); |
3595fcef | 1074 | #ifdef VMS |
1075 | /* kill() doesn't do process groups (job trees?) under VMS */ | |
1076 | if (val < 0) val = -val; | |
1077 | if (val == SIGKILL) { | |
1078 | # include <starlet.h> | |
1079 | /* Use native sys$delprc() to insure that target process is | |
1080 | * deleted; supervisor-mode images don't pay attention to | |
1081 | * CRTL's emulation of Unix-style signals and kill() | |
1082 | */ | |
1083 | while (++mark <= sp) { | |
1084 | I32 proc = SvIVx(*mark); | |
1085 | register unsigned long int __vmssts; | |
1086 | if (!((__vmssts = sys$delprc(&proc,0)) & 1)) { | |
1087 | tot--; | |
1088 | switch (__vmssts) { | |
1089 | case SS$_NONEXPR: | |
1090 | case SS$_NOSUCHNODE: | |
1091 | SETERRNO(ESRCH,__vmssts); | |
1092 | break; | |
1093 | case SS$_NOPRIV: | |
1094 | SETERRNO(EPERM,__vmssts); | |
1095 | break; | |
1096 | default: | |
1097 | SETERRNO(EVMSERR,__vmssts); | |
1098 | } | |
1099 | } | |
1100 | } | |
1101 | break; | |
1102 | } | |
1103 | #endif | |
79072805 LW |
1104 | if (val < 0) { |
1105 | val = -val; | |
1106 | while (++mark <= sp) { | |
463ee0b2 | 1107 | I32 proc = SvIVx(*mark); |
fe14fcc3 | 1108 | #ifdef HAS_KILLPG |
79072805 | 1109 | if (killpg(proc,val)) /* BSD */ |
a687059c | 1110 | #else |
79072805 | 1111 | if (kill(-proc,val)) /* SYSV */ |
a687059c | 1112 | #endif |
79072805 | 1113 | tot--; |
a687059c | 1114 | } |
79072805 LW |
1115 | } |
1116 | else { | |
1117 | while (++mark <= sp) { | |
463ee0b2 | 1118 | if (kill(SvIVx(*mark),val)) |
79072805 | 1119 | tot--; |
a687059c LW |
1120 | } |
1121 | } | |
1122 | break; | |
b1248f16 | 1123 | #endif |
79072805 LW |
1124 | case OP_UNLINK: |
1125 | TAINT_PROPER("unlink"); | |
1126 | tot = sp - mark; | |
1127 | while (++mark <= sp) { | |
463ee0b2 | 1128 | s = SvPVx(*mark, na); |
a687059c LW |
1129 | if (euid || unsafe) { |
1130 | if (UNLINK(s)) | |
1131 | tot--; | |
1132 | } | |
1133 | else { /* don't let root wipe out directories without -U */ | |
fe14fcc3 | 1134 | #ifdef HAS_LSTAT |
c623bd54 | 1135 | if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c | 1136 | #else |
a0d0e21e | 1137 | if (Stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c | 1138 | #endif |
a687059c LW |
1139 | tot--; |
1140 | else { | |
1141 | if (UNLINK(s)) | |
1142 | tot--; | |
1143 | } | |
1144 | } | |
1145 | } | |
1146 | break; | |
a0d0e21e | 1147 | #ifdef HAS_UTIME |
79072805 LW |
1148 | case OP_UTIME: |
1149 | TAINT_PROPER("utime"); | |
1150 | if (sp - mark > 2) { | |
748a9306 | 1151 | #if defined(I_UTIME) || defined(VMS) |
663a0e37 LW |
1152 | struct utimbuf utbuf; |
1153 | #else | |
a687059c | 1154 | struct { |
663a0e37 LW |
1155 | long actime; |
1156 | long modtime; | |
a687059c | 1157 | } utbuf; |
663a0e37 | 1158 | #endif |
a687059c | 1159 | |
afd9f252 | 1160 | Zero(&utbuf, sizeof utbuf, char); |
517844ec | 1161 | #ifdef BIG_TIME |
1162 | utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */ | |
1163 | utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */ | |
1164 | #else | |
463ee0b2 LW |
1165 | utbuf.actime = SvIVx(*++mark); /* time accessed */ |
1166 | utbuf.modtime = SvIVx(*++mark); /* time modified */ | |
517844ec | 1167 | #endif |
79072805 LW |
1168 | tot = sp - mark; |
1169 | while (++mark <= sp) { | |
463ee0b2 | 1170 | if (utime(SvPVx(*mark, na),&utbuf)) |
a687059c LW |
1171 | tot--; |
1172 | } | |
a687059c LW |
1173 | } |
1174 | else | |
79072805 | 1175 | tot = 0; |
a687059c | 1176 | break; |
a0d0e21e | 1177 | #endif |
a687059c LW |
1178 | } |
1179 | return tot; | |
1180 | } | |
1181 | ||
1182 | /* Do the permissions allow some operation? Assumes statcache already set. */ | |
a0d0e21e | 1183 | #ifndef VMS /* VMS' cando is in vms.c */ |
79072805 | 1184 | I32 |
a687059c | 1185 | cando(bit, effective, statbufp) |
79072805 LW |
1186 | I32 bit; |
1187 | I32 effective; | |
a687059c LW |
1188 | register struct stat *statbufp; |
1189 | { | |
bee1dbe2 | 1190 | #ifdef DOSISH |
fe14fcc3 LW |
1191 | /* [Comments and code from Len Reed] |
1192 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write | |
1193 | * to write-protected files. The execute permission bit is set | |
1194 | * by the Miscrosoft C library stat() function for the following: | |
1195 | * .exe files | |
1196 | * .com files | |
1197 | * .bat files | |
1198 | * directories | |
1199 | * All files and directories are readable. | |
1200 | * Directories and special files, e.g. "CON", cannot be | |
1201 | * write-protected. | |
1202 | * [Comment by Tom Dinger -- a directory can have the write-protect | |
1203 | * bit set in the file system, but DOS permits changes to | |
1204 | * the directory anyway. In addition, all bets are off | |
1205 | * here for networked software, such as Novell and | |
1206 | * Sun's PC-NFS.] | |
1207 | */ | |
1208 | ||
bee1dbe2 LW |
1209 | /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat |
1210 | * too so it will actually look into the files for magic numbers | |
1211 | */ | |
fe14fcc3 LW |
1212 | return (bit & statbufp->st_mode) ? TRUE : FALSE; |
1213 | ||
55497cff | 1214 | #else /* ! DOSISH */ |
a687059c | 1215 | if ((effective ? euid : uid) == 0) { /* root is special */ |
c623bd54 LW |
1216 | if (bit == S_IXUSR) { |
1217 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) | |
a687059c LW |
1218 | return TRUE; |
1219 | } | |
1220 | else | |
1221 | return TRUE; /* root reads and writes anything */ | |
1222 | return FALSE; | |
1223 | } | |
1224 | if (statbufp->st_uid == (effective ? euid : uid) ) { | |
1225 | if (statbufp->st_mode & bit) | |
1226 | return TRUE; /* ok as "user" */ | |
1227 | } | |
79072805 | 1228 | else if (ingroup((I32)statbufp->st_gid,effective)) { |
a687059c LW |
1229 | if (statbufp->st_mode & bit >> 3) |
1230 | return TRUE; /* ok as "group" */ | |
1231 | } | |
1232 | else if (statbufp->st_mode & bit >> 6) | |
1233 | return TRUE; /* ok as "other" */ | |
1234 | return FALSE; | |
55497cff | 1235 | #endif /* ! DOSISH */ |
a687059c | 1236 | } |
a0d0e21e | 1237 | #endif /* ! VMS */ |
a687059c | 1238 | |
79072805 | 1239 | I32 |
a687059c | 1240 | ingroup(testgid,effective) |
79072805 LW |
1241 | I32 testgid; |
1242 | I32 effective; | |
a687059c LW |
1243 | { |
1244 | if (testgid == (effective ? egid : gid)) | |
1245 | return TRUE; | |
fe14fcc3 | 1246 | #ifdef HAS_GETGROUPS |
a687059c LW |
1247 | #ifndef NGROUPS |
1248 | #define NGROUPS 32 | |
1249 | #endif | |
1250 | { | |
a0d0e21e | 1251 | Groups_t gary[NGROUPS]; |
79072805 | 1252 | I32 anum; |
a687059c LW |
1253 | |
1254 | anum = getgroups(NGROUPS,gary); | |
1255 | while (--anum >= 0) | |
1256 | if (gary[anum] == testgid) | |
1257 | return TRUE; | |
1258 | } | |
1259 | #endif | |
1260 | return FALSE; | |
1261 | } | |
c2ab57d4 | 1262 | |
fe14fcc3 | 1263 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 | 1264 | |
79072805 LW |
1265 | I32 |
1266 | do_ipcget(optype, mark, sp) | |
1267 | I32 optype; | |
1268 | SV **mark; | |
1269 | SV **sp; | |
c2ab57d4 | 1270 | { |
c2ab57d4 | 1271 | key_t key; |
79072805 | 1272 | I32 n, flags; |
c2ab57d4 | 1273 | |
463ee0b2 LW |
1274 | key = (key_t)SvNVx(*++mark); |
1275 | n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark); | |
1276 | flags = SvIVx(*++mark); | |
748a9306 | 1277 | SETERRNO(0,0); |
c2ab57d4 LW |
1278 | switch (optype) |
1279 | { | |
fe14fcc3 | 1280 | #ifdef HAS_MSG |
79072805 | 1281 | case OP_MSGGET: |
c2ab57d4 | 1282 | return msgget(key, flags); |
e5d73d77 | 1283 | #endif |
fe14fcc3 | 1284 | #ifdef HAS_SEM |
79072805 | 1285 | case OP_SEMGET: |
c2ab57d4 | 1286 | return semget(key, n, flags); |
e5d73d77 | 1287 | #endif |
fe14fcc3 | 1288 | #ifdef HAS_SHM |
79072805 | 1289 | case OP_SHMGET: |
c2ab57d4 | 1290 | return shmget(key, n, flags); |
e5d73d77 | 1291 | #endif |
fe14fcc3 | 1292 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 1293 | default: |
c07a80fd | 1294 | croak("%s not implemented", op_desc[optype]); |
e5d73d77 | 1295 | #endif |
c2ab57d4 LW |
1296 | } |
1297 | return -1; /* should never happen */ | |
1298 | } | |
1299 | ||
79072805 LW |
1300 | I32 |
1301 | do_ipcctl(optype, mark, sp) | |
1302 | I32 optype; | |
1303 | SV **mark; | |
1304 | SV **sp; | |
c2ab57d4 | 1305 | { |
79072805 | 1306 | SV *astr; |
c2ab57d4 | 1307 | char *a; |
a0d0e21e LW |
1308 | I32 id, n, cmd, infosize, getinfo; |
1309 | I32 ret = -1; | |
c2ab57d4 | 1310 | |
463ee0b2 LW |
1311 | id = SvIVx(*++mark); |
1312 | n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0; | |
1313 | cmd = SvIVx(*++mark); | |
79072805 | 1314 | astr = *++mark; |
c2ab57d4 LW |
1315 | infosize = 0; |
1316 | getinfo = (cmd == IPC_STAT); | |
1317 | ||
1318 | switch (optype) | |
1319 | { | |
fe14fcc3 | 1320 | #ifdef HAS_MSG |
79072805 | 1321 | case OP_MSGCTL: |
c2ab57d4 LW |
1322 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1323 | infosize = sizeof(struct msqid_ds); | |
1324 | break; | |
e5d73d77 | 1325 | #endif |
fe14fcc3 | 1326 | #ifdef HAS_SHM |
79072805 | 1327 | case OP_SHMCTL: |
c2ab57d4 LW |
1328 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1329 | infosize = sizeof(struct shmid_ds); | |
1330 | break; | |
e5d73d77 | 1331 | #endif |
fe14fcc3 | 1332 | #ifdef HAS_SEM |
79072805 | 1333 | case OP_SEMCTL: |
c2ab57d4 LW |
1334 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1335 | infosize = sizeof(struct semid_ds); | |
1336 | else if (cmd == GETALL || cmd == SETALL) | |
1337 | { | |
1338 | struct semid_ds semds; | |
1339 | if (semctl(id, 0, IPC_STAT, &semds) == -1) | |
1340 | return -1; | |
1341 | getinfo = (cmd == GETALL); | |
6e21c824 LW |
1342 | infosize = semds.sem_nsems * sizeof(short); |
1343 | /* "short" is technically wrong but much more portable | |
1344 | than guessing about u_?short(_t)? */ | |
c2ab57d4 LW |
1345 | } |
1346 | break; | |
e5d73d77 | 1347 | #endif |
fe14fcc3 | 1348 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 1349 | default: |
c07a80fd | 1350 | croak("%s not implemented", op_desc[optype]); |
e5d73d77 | 1351 | #endif |
c2ab57d4 LW |
1352 | } |
1353 | ||
1354 | if (infosize) | |
1355 | { | |
a0d0e21e | 1356 | STRLEN len; |
c2ab57d4 LW |
1357 | if (getinfo) |
1358 | { | |
a0d0e21e LW |
1359 | SvPV_force(astr, len); |
1360 | a = SvGROW(astr, infosize+1); | |
c2ab57d4 LW |
1361 | } |
1362 | else | |
1363 | { | |
463ee0b2 LW |
1364 | a = SvPV(astr, len); |
1365 | if (len != infosize) | |
1366 | croak("Bad arg length for %s, is %d, should be %d", | |
c07a80fd | 1367 | op_desc[optype], len, infosize); |
c2ab57d4 LW |
1368 | } |
1369 | } | |
1370 | else | |
1371 | { | |
463ee0b2 | 1372 | I32 i = SvIV(astr); |
c2ab57d4 LW |
1373 | a = (char *)i; /* ouch */ |
1374 | } | |
748a9306 | 1375 | SETERRNO(0,0); |
c2ab57d4 LW |
1376 | switch (optype) |
1377 | { | |
fe14fcc3 | 1378 | #ifdef HAS_MSG |
79072805 | 1379 | case OP_MSGCTL: |
bee1dbe2 | 1380 | ret = msgctl(id, cmd, (struct msqid_ds *)a); |
c2ab57d4 | 1381 | break; |
e5d73d77 | 1382 | #endif |
fe14fcc3 | 1383 | #ifdef HAS_SEM |
79072805 LW |
1384 | case OP_SEMCTL: |
1385 | ret = semctl(id, n, cmd, (struct semid_ds *)a); | |
c2ab57d4 | 1386 | break; |
e5d73d77 | 1387 | #endif |
fe14fcc3 | 1388 | #ifdef HAS_SHM |
79072805 | 1389 | case OP_SHMCTL: |
bee1dbe2 | 1390 | ret = shmctl(id, cmd, (struct shmid_ds *)a); |
c2ab57d4 | 1391 | break; |
e5d73d77 | 1392 | #endif |
c2ab57d4 LW |
1393 | } |
1394 | if (getinfo && ret >= 0) { | |
79072805 LW |
1395 | SvCUR_set(astr, infosize); |
1396 | *SvEND(astr) = '\0'; | |
a0d0e21e | 1397 | SvSETMAGIC(astr); |
c2ab57d4 LW |
1398 | } |
1399 | return ret; | |
1400 | } | |
1401 | ||
79072805 LW |
1402 | I32 |
1403 | do_msgsnd(mark, sp) | |
1404 | SV **mark; | |
1405 | SV **sp; | |
c2ab57d4 | 1406 | { |
fe14fcc3 | 1407 | #ifdef HAS_MSG |
79072805 | 1408 | SV *mstr; |
c2ab57d4 | 1409 | char *mbuf; |
79072805 | 1410 | I32 id, msize, flags; |
463ee0b2 | 1411 | STRLEN len; |
c2ab57d4 | 1412 | |
463ee0b2 | 1413 | id = SvIVx(*++mark); |
79072805 | 1414 | mstr = *++mark; |
463ee0b2 LW |
1415 | flags = SvIVx(*++mark); |
1416 | mbuf = SvPV(mstr, len); | |
1417 | if ((msize = len - sizeof(long)) < 0) | |
1418 | croak("Arg too short for msgsnd"); | |
748a9306 | 1419 | SETERRNO(0,0); |
bee1dbe2 | 1420 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); |
e5d73d77 | 1421 | #else |
463ee0b2 | 1422 | croak("msgsnd not implemented"); |
e5d73d77 | 1423 | #endif |
c2ab57d4 LW |
1424 | } |
1425 | ||
79072805 LW |
1426 | I32 |
1427 | do_msgrcv(mark, sp) | |
1428 | SV **mark; | |
1429 | SV **sp; | |
c2ab57d4 | 1430 | { |
fe14fcc3 | 1431 | #ifdef HAS_MSG |
79072805 | 1432 | SV *mstr; |
c2ab57d4 LW |
1433 | char *mbuf; |
1434 | long mtype; | |
79072805 | 1435 | I32 id, msize, flags, ret; |
463ee0b2 | 1436 | STRLEN len; |
79072805 | 1437 | |
463ee0b2 | 1438 | id = SvIVx(*++mark); |
79072805 | 1439 | mstr = *++mark; |
463ee0b2 LW |
1440 | msize = SvIVx(*++mark); |
1441 | mtype = (long)SvIVx(*++mark); | |
1442 | flags = SvIVx(*++mark); | |
ed6116ce LW |
1443 | if (SvTHINKFIRST(mstr)) { |
1444 | if (SvREADONLY(mstr)) | |
1445 | croak("Can't msgrcv to readonly var"); | |
1446 | if (SvROK(mstr)) | |
1447 | sv_unref(mstr); | |
1448 | } | |
a0d0e21e LW |
1449 | SvPV_force(mstr, len); |
1450 | mbuf = SvGROW(mstr, sizeof(long)+msize+1); | |
1451 | ||
748a9306 | 1452 | SETERRNO(0,0); |
bee1dbe2 | 1453 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); |
c2ab57d4 | 1454 | if (ret >= 0) { |
79072805 LW |
1455 | SvCUR_set(mstr, sizeof(long)+ret); |
1456 | *SvEND(mstr) = '\0'; | |
c2ab57d4 LW |
1457 | } |
1458 | return ret; | |
e5d73d77 | 1459 | #else |
463ee0b2 | 1460 | croak("msgrcv not implemented"); |
e5d73d77 | 1461 | #endif |
c2ab57d4 LW |
1462 | } |
1463 | ||
79072805 LW |
1464 | I32 |
1465 | do_semop(mark, sp) | |
1466 | SV **mark; | |
1467 | SV **sp; | |
c2ab57d4 | 1468 | { |
fe14fcc3 | 1469 | #ifdef HAS_SEM |
79072805 | 1470 | SV *opstr; |
c2ab57d4 | 1471 | char *opbuf; |
463ee0b2 LW |
1472 | I32 id; |
1473 | STRLEN opsize; | |
c2ab57d4 | 1474 | |
463ee0b2 | 1475 | id = SvIVx(*++mark); |
79072805 | 1476 | opstr = *++mark; |
463ee0b2 | 1477 | opbuf = SvPV(opstr, opsize); |
c2ab57d4 LW |
1478 | if (opsize < sizeof(struct sembuf) |
1479 | || (opsize % sizeof(struct sembuf)) != 0) { | |
748a9306 | 1480 | SETERRNO(EINVAL,LIB$_INVARG); |
c2ab57d4 LW |
1481 | return -1; |
1482 | } | |
748a9306 | 1483 | SETERRNO(0,0); |
6e21c824 | 1484 | return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf)); |
e5d73d77 | 1485 | #else |
463ee0b2 | 1486 | croak("semop not implemented"); |
e5d73d77 | 1487 | #endif |
c2ab57d4 LW |
1488 | } |
1489 | ||
79072805 LW |
1490 | I32 |
1491 | do_shmio(optype, mark, sp) | |
1492 | I32 optype; | |
1493 | SV **mark; | |
1494 | SV **sp; | |
c2ab57d4 | 1495 | { |
fe14fcc3 | 1496 | #ifdef HAS_SHM |
79072805 | 1497 | SV *mstr; |
c2ab57d4 | 1498 | char *mbuf, *shm; |
79072805 | 1499 | I32 id, mpos, msize; |
463ee0b2 | 1500 | STRLEN len; |
c2ab57d4 | 1501 | struct shmid_ds shmds; |
c2ab57d4 | 1502 | |
463ee0b2 | 1503 | id = SvIVx(*++mark); |
79072805 | 1504 | mstr = *++mark; |
463ee0b2 LW |
1505 | mpos = SvIVx(*++mark); |
1506 | msize = SvIVx(*++mark); | |
748a9306 | 1507 | SETERRNO(0,0); |
c2ab57d4 LW |
1508 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
1509 | return -1; | |
1510 | if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) { | |
748a9306 | 1511 | SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */ |
c2ab57d4 LW |
1512 | return -1; |
1513 | } | |
a0d0e21e | 1514 | shm = (Shmat_t)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0); |
c2ab57d4 LW |
1515 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
1516 | return -1; | |
79072805 | 1517 | if (optype == OP_SHMREAD) { |
a0d0e21e LW |
1518 | SvPV_force(mstr, len); |
1519 | mbuf = SvGROW(mstr, msize+1); | |
1520 | ||
bee1dbe2 | 1521 | Copy(shm + mpos, mbuf, msize, char); |
79072805 LW |
1522 | SvCUR_set(mstr, msize); |
1523 | *SvEND(mstr) = '\0'; | |
a0d0e21e | 1524 | SvSETMAGIC(mstr); |
c2ab57d4 LW |
1525 | } |
1526 | else { | |
79072805 | 1527 | I32 n; |
c2ab57d4 | 1528 | |
a0d0e21e | 1529 | mbuf = SvPV(mstr, len); |
463ee0b2 | 1530 | if ((n = len) > msize) |
c2ab57d4 | 1531 | n = msize; |
bee1dbe2 | 1532 | Copy(mbuf, shm + mpos, n, char); |
c2ab57d4 | 1533 | if (n < msize) |
bee1dbe2 | 1534 | memzero(shm + mpos + n, msize - n); |
c2ab57d4 LW |
1535 | } |
1536 | return shmdt(shm); | |
e5d73d77 | 1537 | #else |
463ee0b2 | 1538 | croak("shm I/O not implemented"); |
e5d73d77 | 1539 | #endif |
c2ab57d4 LW |
1540 | } |
1541 | ||
fe14fcc3 | 1542 | #endif /* SYSV IPC */ |