Commit | Line | Data |
a0d0e21e |
1 | /* doio.c |
a687059c |
2 | * |
9607fc9c |
3 | * Copyright (c) 1991-1997, Larry Wall |
a687059c |
4 | * |
6e21c824 |
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 |
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 |
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 |
30 | # ifndef HAS_SHMAT_PROTOTYPE |
31 | extern Shmat_t shmat _((int, char *, int)); |
32 | # endif |
c2ab57d4 |
33 | #endif |
e5d73d77 |
34 | #endif |
c2ab57d4 |
35 | |
663a0e37 |
36 | #ifdef I_UTIME |
3e3baf6d |
37 | # ifdef _MSC_VER |
3fe9a6f1 |
38 | # include <sys/utime.h> |
39 | # else |
40 | # include <utime.h> |
41 | # endif |
663a0e37 |
42 | #endif |
ff8e2863 |
43 | #ifdef I_FCNTL |
44 | #include <fcntl.h> |
45 | #endif |
fe14fcc3 |
46 | #ifdef I_SYS_FILE |
47 | #include <sys/file.h> |
48 | #endif |
a687059c |
49 | |
76121258 |
50 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
51 | #include <signal.h> |
52 | #endif |
53 | |
54 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
55 | #ifdef I_UNISTD |
56 | # include <unistd.h> |
57 | #endif |
58 | |
232e078e |
59 | #if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */ |
60 | # include <sys/socket.h> |
61 | # include <netdb.h> |
62 | # ifndef ENOTSOCK |
63 | # ifdef I_NET_ERRNO |
64 | # include <net/errno.h> |
65 | # endif |
66 | # endif |
67 | #endif |
68 | |
d574b85e |
69 | /* Put this after #includes because <unistd.h> defines _XOPEN_*. */ |
70 | #ifndef Sock_size_t |
137443ea |
71 | # if _XOPEN_VERSION >= 5 || defined(_XOPEN_SOURCE_EXTENDED) || defined(__GLIBC__) |
d574b85e |
72 | # define Sock_size_t Size_t |
73 | # else |
74 | # define Sock_size_t int |
75 | # endif |
76 | #endif |
77 | |
a687059c |
78 | bool |
c07a80fd |
79 | do_open(gv,name,len,as_raw,rawmode,rawperm,supplied_fp) |
79072805 |
80 | GV *gv; |
a687059c |
81 | register char *name; |
79072805 |
82 | I32 len; |
c07a80fd |
83 | int as_raw; |
84 | int rawmode, rawperm; |
760ac839 |
85 | PerlIO *supplied_fp; |
a687059c |
86 | { |
a0d0e21e |
87 | register IO *io = GvIOn(gv); |
760ac839 |
88 | PerlIO *saveifp = Nullfp; |
89 | PerlIO *saveofp = Nullfp; |
6e21c824 |
90 | char savetype = ' '; |
c07a80fd |
91 | int writing = 0; |
760ac839 |
92 | PerlIO *fp; |
c07a80fd |
93 | int fd; |
94 | int result; |
a687059c |
95 | |
a687059c |
96 | forkprocess = 1; /* assume true if no fork */ |
c07a80fd |
97 | |
a0d0e21e |
98 | if (IoIFP(io)) { |
760ac839 |
99 | fd = PerlIO_fileno(IoIFP(io)); |
8990e307 |
100 | if (IoTYPE(io) == '-') |
c2ab57d4 |
101 | result = 0; |
6e21c824 |
102 | else if (fd <= maxsysfd) { |
8990e307 |
103 | saveifp = IoIFP(io); |
104 | saveofp = IoOFP(io); |
105 | savetype = IoTYPE(io); |
6e21c824 |
106 | result = 0; |
107 | } |
8990e307 |
108 | else if (IoTYPE(io) == '|') |
109 | result = my_pclose(IoIFP(io)); |
110 | else if (IoIFP(io) != IoOFP(io)) { |
111 | if (IoOFP(io)) { |
760ac839 |
112 | result = PerlIO_close(IoOFP(io)); |
113 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ |
c2ab57d4 |
114 | } |
115 | else |
760ac839 |
116 | result = PerlIO_close(IoIFP(io)); |
a687059c |
117 | } |
a687059c |
118 | else |
760ac839 |
119 | result = PerlIO_close(IoIFP(io)); |
6e21c824 |
120 | if (result == EOF && fd > maxsysfd) |
760ac839 |
121 | PerlIO_printf(PerlIO_stderr(), "Warning: unable to close filehandle %s properly.\n", |
79072805 |
122 | GvENAME(gv)); |
8990e307 |
123 | IoOFP(io) = IoIFP(io) = Nullfp; |
a687059c |
124 | } |
c07a80fd |
125 | |
126 | if (as_raw) { |
127 | result = rawmode & 3; |
128 | IoTYPE(io) = "<>++"[result]; |
129 | writing = (result > 0); |
130 | fd = open(name, rawmode, rawperm); |
131 | if (fd == -1) |
132 | fp = NULL; |
133 | else { |
360e5741 |
134 | char *fpmode; |
135 | if (result == 0) |
136 | fpmode = "r"; |
137 | #ifdef O_APPEND |
138 | else if (rawmode & O_APPEND) |
139 | fpmode = (result == 1) ? "a" : "a+"; |
140 | #endif |
141 | else |
142 | fpmode = (result == 1) ? "w" : "r+"; |
143 | fp = PerlIO_fdopen(fd, fpmode); |
c07a80fd |
144 | if (!fp) |
145 | close(fd); |
146 | } |
a687059c |
147 | } |
c07a80fd |
148 | else { |
149 | char *myname; |
150 | char mode[3]; /* stdio file mode ("r\0" or "r+\0") */ |
151 | int dodup; |
152 | |
153 | myname = savepvn(name, len); |
154 | SAVEFREEPV(myname); |
155 | name = myname; |
156 | while (len && isSPACE(name[len-1])) |
157 | name[--len] = '\0'; |
158 | |
159 | mode[0] = mode[1] = mode[2] = '\0'; |
160 | IoTYPE(io) = *name; |
161 | if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */ |
162 | mode[1] = *name++; |
163 | --len; |
164 | writing = 1; |
a687059c |
165 | } |
c07a80fd |
166 | |
167 | if (*name == '|') { |
168 | /*SUPPRESS 530*/ |
169 | for (name++; isSPACE(*name); name++) ; |
170 | if (strNE(name,"-")) |
171 | TAINT_ENV(); |
172 | TAINT_PROPER("piped open"); |
173 | if (dowarn && name[strlen(name)-1] == '|') |
174 | warn("Can't do bidirectional pipe"); |
175 | fp = my_popen(name,"w"); |
176 | writing = 1; |
177 | } |
178 | else if (*name == '>') { |
179 | TAINT_PROPER("open"); |
bf38876a |
180 | name++; |
c07a80fd |
181 | if (*name == '>') { |
182 | mode[0] = IoTYPE(io) = 'a'; |
bf38876a |
183 | name++; |
a0d0e21e |
184 | } |
c07a80fd |
185 | else |
186 | mode[0] = 'w'; |
187 | writing = 1; |
188 | |
189 | if (*name == '&') { |
190 | duplicity: |
191 | dodup = 1; |
192 | name++; |
193 | if (*name == '=') { |
194 | dodup = 0; |
a0d0e21e |
195 | name++; |
c07a80fd |
196 | } |
197 | if (!*name && supplied_fp) |
198 | fp = supplied_fp; |
a0d0e21e |
199 | else { |
c07a80fd |
200 | /*SUPPRESS 530*/ |
201 | for (; isSPACE(*name); name++) ; |
202 | if (isDIGIT(*name)) |
203 | fd = atoi(name); |
204 | else { |
205 | IO* thatio; |
206 | gv = gv_fetchpv(name,FALSE,SVt_PVIO); |
207 | thatio = GvIO(gv); |
208 | if (!thatio) { |
6e21c824 |
209 | #ifdef EINVAL |
c07a80fd |
210 | SETERRNO(EINVAL,SS$_IVCHAN); |
6e21c824 |
211 | #endif |
c07a80fd |
212 | goto say_false; |
213 | } |
214 | if (IoIFP(thatio)) { |
760ac839 |
215 | fd = PerlIO_fileno(IoIFP(thatio)); |
c07a80fd |
216 | if (IoTYPE(thatio) == 's') |
217 | IoTYPE(io) = 's'; |
218 | } |
219 | else |
220 | fd = -1; |
a0d0e21e |
221 | } |
fec02dd3 |
222 | if (dodup) |
c07a80fd |
223 | fd = dup(fd); |
760ac839 |
224 | if (!(fp = PerlIO_fdopen(fd,mode))) { |
c07a80fd |
225 | if (dodup) |
226 | close(fd); |
517844ec |
227 | } |
c07a80fd |
228 | } |
bf38876a |
229 | } |
c07a80fd |
230 | else { |
231 | /*SUPPRESS 530*/ |
232 | for (; isSPACE(*name); name++) ; |
233 | if (strEQ(name,"-")) { |
760ac839 |
234 | fp = PerlIO_stdout(); |
c07a80fd |
235 | IoTYPE(io) = '-'; |
236 | } |
237 | else { |
760ac839 |
238 | fp = PerlIO_open(name,mode); |
c07a80fd |
239 | } |
bf38876a |
240 | } |
241 | } |
c07a80fd |
242 | else if (*name == '<') { |
243 | /*SUPPRESS 530*/ |
244 | for (name++; isSPACE(*name); name++) ; |
bf38876a |
245 | mode[0] = 'r'; |
bf38876a |
246 | if (*name == '&') |
247 | goto duplicity; |
a687059c |
248 | if (strEQ(name,"-")) { |
760ac839 |
249 | fp = PerlIO_stdin(); |
8990e307 |
250 | IoTYPE(io) = '-'; |
a687059c |
251 | } |
bf38876a |
252 | else |
760ac839 |
253 | fp = PerlIO_open(name,mode); |
a687059c |
254 | } |
255 | else if (name[len-1] == '|') { |
a687059c |
256 | name[--len] = '\0'; |
99b89507 |
257 | while (len && isSPACE(name[len-1])) |
a687059c |
258 | name[--len] = '\0'; |
99b89507 |
259 | /*SUPPRESS 530*/ |
260 | for (; isSPACE(*name); name++) ; |
79072805 |
261 | if (strNE(name,"-")) |
262 | TAINT_ENV(); |
263 | TAINT_PROPER("piped open"); |
264 | fp = my_popen(name,"r"); |
8990e307 |
265 | IoTYPE(io) = '|'; |
a687059c |
266 | } |
267 | else { |
8990e307 |
268 | IoTYPE(io) = '<'; |
99b89507 |
269 | /*SUPPRESS 530*/ |
270 | for (; isSPACE(*name); name++) ; |
a687059c |
271 | if (strEQ(name,"-")) { |
760ac839 |
272 | fp = PerlIO_stdin(); |
8990e307 |
273 | IoTYPE(io) = '-'; |
a687059c |
274 | } |
275 | else |
760ac839 |
276 | fp = PerlIO_open(name,"r"); |
a687059c |
277 | } |
278 | } |
bee1dbe2 |
279 | if (!fp) { |
8990e307 |
280 | if (dowarn && IoTYPE(io) == '<' && strchr(name, '\n')) |
bee1dbe2 |
281 | warn(warn_nl, "open"); |
6e21c824 |
282 | goto say_false; |
bee1dbe2 |
283 | } |
8990e307 |
284 | if (IoTYPE(io) && |
285 | IoTYPE(io) != '|' && IoTYPE(io) != '-') { |
96827780 |
286 | dTHR; |
760ac839 |
287 | if (Fstat(PerlIO_fileno(fp),&statbuf) < 0) { |
288 | (void)PerlIO_close(fp); |
6e21c824 |
289 | goto say_false; |
a687059c |
290 | } |
1462b684 |
291 | if (S_ISSOCK(statbuf.st_mode)) |
8990e307 |
292 | IoTYPE(io) = 's'; /* in case a socket was passed in to us */ |
99b89507 |
293 | #ifdef HAS_SOCKET |
294 | else if ( |
c623bd54 |
295 | #ifdef S_IFMT |
99b89507 |
296 | !(statbuf.st_mode & S_IFMT) |
297 | #else |
298 | !statbuf.st_mode |
299 | #endif |
300 | ) { |
96827780 |
301 | char tmpbuf[256]; |
302 | Sock_size_t buflen = sizeof tmpbuf; |
303 | if (getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf, |
d574b85e |
304 | &buflen) >= 0 |
305 | || errno != ENOTSOCK) |
8990e307 |
306 | IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */ |
99b89507 |
307 | /* but some return 0 for streams too, sigh */ |
308 | } |
bf38876a |
309 | #endif |
a687059c |
310 | } |
6e21c824 |
311 | if (saveifp) { /* must use old fp? */ |
760ac839 |
312 | fd = PerlIO_fileno(saveifp); |
6e21c824 |
313 | if (saveofp) { |
760ac839 |
314 | PerlIO_flush(saveofp); /* emulate PerlIO_close() */ |
6e21c824 |
315 | if (saveofp != saveifp) { /* was a socket? */ |
760ac839 |
316 | PerlIO_close(saveofp); |
99b89507 |
317 | if (fd > 2) |
318 | Safefree(saveofp); |
6e21c824 |
319 | } |
320 | } |
760ac839 |
321 | if (fd != PerlIO_fileno(fp)) { |
bee1dbe2 |
322 | int pid; |
79072805 |
323 | SV *sv; |
bee1dbe2 |
324 | |
760ac839 |
325 | dup2(PerlIO_fileno(fp), fd); |
326 | sv = *av_fetch(fdpid,PerlIO_fileno(fp),TRUE); |
a0d0e21e |
327 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 |
328 | pid = SvIVX(sv); |
329 | SvIVX(sv) = 0; |
79072805 |
330 | sv = *av_fetch(fdpid,fd,TRUE); |
a0d0e21e |
331 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 |
332 | SvIVX(sv) = pid; |
760ac839 |
333 | PerlIO_close(fp); |
bee1dbe2 |
334 | |
6e21c824 |
335 | } |
336 | fp = saveifp; |
760ac839 |
337 | PerlIO_clearerr(fp); |
6e21c824 |
338 | } |
a0d0e21e |
339 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
760ac839 |
340 | fd = PerlIO_fileno(fp); |
a0d0e21e |
341 | fcntl(fd,F_SETFD,fd > maxsysfd); |
1462b684 |
342 | #endif |
8990e307 |
343 | IoIFP(io) = fp; |
bf38876a |
344 | if (writing) { |
96827780 |
345 | dTHR; |
8990e307 |
346 | if (IoTYPE(io) == 's' |
347 | || (IoTYPE(io) == '>' && S_ISCHR(statbuf.st_mode)) ) { |
760ac839 |
348 | if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) { |
349 | PerlIO_close(fp); |
8990e307 |
350 | IoIFP(io) = Nullfp; |
6e21c824 |
351 | goto say_false; |
fe14fcc3 |
352 | } |
1462b684 |
353 | } |
354 | else |
8990e307 |
355 | IoOFP(io) = fp; |
bf38876a |
356 | } |
a687059c |
357 | return TRUE; |
6e21c824 |
358 | |
359 | say_false: |
8990e307 |
360 | IoIFP(io) = saveifp; |
361 | IoOFP(io) = saveofp; |
362 | IoTYPE(io) = savetype; |
6e21c824 |
363 | return FALSE; |
a687059c |
364 | } |
365 | |
760ac839 |
366 | PerlIO * |
79072805 |
367 | nextargv(gv) |
368 | register GV *gv; |
a687059c |
369 | { |
79072805 |
370 | register SV *sv; |
99b89507 |
371 | #ifndef FLEXFILENAMES |
c623bd54 |
372 | int filedev; |
373 | int fileino; |
99b89507 |
374 | #endif |
c623bd54 |
375 | int fileuid; |
376 | int filegid; |
fe14fcc3 |
377 | |
79072805 |
378 | if (!argvoutgv) |
85e6fe83 |
379 | argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO); |
fe14fcc3 |
380 | if (filemode & (S_ISUID|S_ISGID)) { |
760ac839 |
381 | PerlIO_flush(IoIFP(GvIOn(argvoutgv))); /* chmod must follow last write */ |
fe14fcc3 |
382 | #ifdef HAS_FCHMOD |
383 | (void)fchmod(lastfd,filemode); |
384 | #else |
385 | (void)chmod(oldname,filemode); |
386 | #endif |
387 | } |
388 | filemode = 0; |
79072805 |
389 | while (av_len(GvAV(gv)) >= 0) { |
11343788 |
390 | dTHR; |
463ee0b2 |
391 | STRLEN len; |
79072805 |
392 | sv = av_shift(GvAV(gv)); |
8990e307 |
393 | SAVEFREESV(sv); |
79072805 |
394 | sv_setsv(GvSV(gv),sv); |
395 | SvSETMAGIC(GvSV(gv)); |
463ee0b2 |
396 | oldname = SvPVx(GvSV(gv), len); |
c07a80fd |
397 | if (do_open(gv,oldname,len,FALSE,0,0,Nullfp)) { |
a687059c |
398 | if (inplace) { |
79072805 |
399 | TAINT_PROPER("inplace open"); |
c623bd54 |
400 | if (strEQ(oldname,"-")) { |
4633a7c4 |
401 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a0d0e21e |
402 | return IoIFP(GvIOp(gv)); |
c623bd54 |
403 | } |
99b89507 |
404 | #ifndef FLEXFILENAMES |
c623bd54 |
405 | filedev = statbuf.st_dev; |
406 | fileino = statbuf.st_ino; |
99b89507 |
407 | #endif |
a687059c |
408 | filemode = statbuf.st_mode; |
409 | fileuid = statbuf.st_uid; |
410 | filegid = statbuf.st_gid; |
c623bd54 |
411 | if (!S_ISREG(filemode)) { |
412 | warn("Can't do inplace edit: %s is not a regular file", |
413 | oldname ); |
79072805 |
414 | do_close(gv,FALSE); |
c623bd54 |
415 | continue; |
416 | } |
a687059c |
417 | if (*inplace) { |
ff8e2863 |
418 | #ifdef SUFFIX |
79072805 |
419 | add_suffix(sv,inplace); |
ff8e2863 |
420 | #else |
79072805 |
421 | sv_catpv(sv,inplace); |
ff8e2863 |
422 | #endif |
c623bd54 |
423 | #ifndef FLEXFILENAMES |
a0d0e21e |
424 | if (Stat(SvPVX(sv),&statbuf) >= 0 |
c623bd54 |
425 | && statbuf.st_dev == filedev |
426 | && statbuf.st_ino == fileino ) { |
427 | warn("Can't do inplace edit: %s > 14 characters", |
463ee0b2 |
428 | SvPVX(sv) ); |
79072805 |
429 | do_close(gv,FALSE); |
c623bd54 |
430 | continue; |
431 | } |
432 | #endif |
fe14fcc3 |
433 | #ifdef HAS_RENAME |
bee1dbe2 |
434 | #ifndef DOSISH |
463ee0b2 |
435 | if (rename(oldname,SvPVX(sv)) < 0) { |
c623bd54 |
436 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 |
437 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 |
438 | do_close(gv,FALSE); |
c623bd54 |
439 | continue; |
440 | } |
a687059c |
441 | #else |
79072805 |
442 | do_close(gv,FALSE); |
463ee0b2 |
443 | (void)unlink(SvPVX(sv)); |
444 | (void)rename(oldname,SvPVX(sv)); |
1193dd27 |
445 | do_open(gv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp); |
55497cff |
446 | #endif /* DOSISH */ |
ff8e2863 |
447 | #else |
463ee0b2 |
448 | (void)UNLINK(SvPVX(sv)); |
449 | if (link(oldname,SvPVX(sv)) < 0) { |
c623bd54 |
450 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 |
451 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 |
452 | do_close(gv,FALSE); |
c623bd54 |
453 | continue; |
454 | } |
a687059c |
455 | (void)UNLINK(oldname); |
456 | #endif |
457 | } |
458 | else { |
a8c18271 |
459 | #if !defined(DOSISH) && !defined(AMIGAOS) |
edc7bc49 |
460 | # ifndef VMS /* Don't delete; use automatic file versioning */ |
fe14fcc3 |
461 | if (UNLINK(oldname) < 0) { |
462 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 |
463 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 |
464 | do_close(gv,FALSE); |
fe14fcc3 |
465 | continue; |
466 | } |
edc7bc49 |
467 | # endif |
ff8e2863 |
468 | #else |
463ee0b2 |
469 | croak("Can't do inplace edit without backup"); |
ff8e2863 |
470 | #endif |
a687059c |
471 | } |
472 | |
79072805 |
473 | sv_setpvn(sv,">",1); |
474 | sv_catpv(sv,oldname); |
748a9306 |
475 | SETERRNO(0,0); /* in case sprintf set errno */ |
c07a80fd |
476 | if (!do_open(argvoutgv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp)) { |
c623bd54 |
477 | warn("Can't do inplace edit on %s: %s", |
2304df62 |
478 | oldname, Strerror(errno) ); |
79072805 |
479 | do_close(gv,FALSE); |
fe14fcc3 |
480 | continue; |
481 | } |
4633a7c4 |
482 | setdefout(argvoutgv); |
760ac839 |
483 | lastfd = PerlIO_fileno(IoIFP(GvIOp(argvoutgv))); |
a0d0e21e |
484 | (void)Fstat(lastfd,&statbuf); |
fe14fcc3 |
485 | #ifdef HAS_FCHMOD |
486 | (void)fchmod(lastfd,filemode); |
a687059c |
487 | #else |
3e3baf6d |
488 | # if !(defined(WIN32) && defined(__BORLANDC__)) |
489 | /* Borland runtime creates a readonly file! */ |
a687059c |
490 | (void)chmod(oldname,filemode); |
3e3baf6d |
491 | # endif |
a687059c |
492 | #endif |
fe14fcc3 |
493 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
494 | #ifdef HAS_FCHOWN |
495 | (void)fchown(lastfd,fileuid,filegid); |
a687059c |
496 | #else |
fe14fcc3 |
497 | #ifdef HAS_CHOWN |
498 | (void)chown(oldname,fileuid,filegid); |
a687059c |
499 | #endif |
b1248f16 |
500 | #endif |
fe14fcc3 |
501 | } |
a687059c |
502 | } |
a0d0e21e |
503 | return IoIFP(GvIOp(gv)); |
a687059c |
504 | } |
505 | else |
760ac839 |
506 | PerlIO_printf(PerlIO_stderr(), "Can't open %s: %s\n",SvPV(sv, na), Strerror(errno)); |
a687059c |
507 | } |
508 | if (inplace) { |
79072805 |
509 | (void)do_close(argvoutgv,FALSE); |
4633a7c4 |
510 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a687059c |
511 | } |
512 | return Nullfp; |
513 | } |
514 | |
fe14fcc3 |
515 | #ifdef HAS_PIPE |
afd9f252 |
516 | void |
79072805 |
517 | do_pipe(sv, rgv, wgv) |
518 | SV *sv; |
519 | GV *rgv; |
520 | GV *wgv; |
afd9f252 |
521 | { |
79072805 |
522 | register IO *rstio; |
523 | register IO *wstio; |
afd9f252 |
524 | int fd[2]; |
525 | |
79072805 |
526 | if (!rgv) |
afd9f252 |
527 | goto badexit; |
79072805 |
528 | if (!wgv) |
afd9f252 |
529 | goto badexit; |
530 | |
a0d0e21e |
531 | rstio = GvIOn(rgv); |
532 | wstio = GvIOn(wgv); |
afd9f252 |
533 | |
a0d0e21e |
534 | if (IoIFP(rstio)) |
79072805 |
535 | do_close(rgv,FALSE); |
a0d0e21e |
536 | if (IoIFP(wstio)) |
79072805 |
537 | do_close(wgv,FALSE); |
afd9f252 |
538 | |
539 | if (pipe(fd) < 0) |
540 | goto badexit; |
760ac839 |
541 | IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"); |
542 | IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"); |
8990e307 |
543 | IoIFP(wstio) = IoOFP(wstio); |
544 | IoTYPE(rstio) = '<'; |
545 | IoTYPE(wstio) = '>'; |
546 | if (!IoIFP(rstio) || !IoOFP(wstio)) { |
760ac839 |
547 | if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio)); |
fe14fcc3 |
548 | else close(fd[0]); |
760ac839 |
549 | if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio)); |
fe14fcc3 |
550 | else close(fd[1]); |
551 | goto badexit; |
552 | } |
afd9f252 |
553 | |
79072805 |
554 | sv_setsv(sv,&sv_yes); |
afd9f252 |
555 | return; |
556 | |
557 | badexit: |
79072805 |
558 | sv_setsv(sv,&sv_undef); |
afd9f252 |
559 | return; |
560 | } |
b1248f16 |
561 | #endif |
afd9f252 |
562 | |
517844ec |
563 | /* explicit renamed to avoid C++ conflict -- kja */ |
a687059c |
564 | bool |
a0d0e21e |
565 | #ifndef CAN_PROTOTYPE |
517844ec |
566 | do_close(gv,not_implicit) |
79072805 |
567 | GV *gv; |
517844ec |
568 | bool not_implicit; |
8990e307 |
569 | #else |
517844ec |
570 | do_close(GV *gv, bool not_implicit) |
a0d0e21e |
571 | #endif /* CAN_PROTOTYPE */ |
a687059c |
572 | { |
1193dd27 |
573 | bool retval; |
574 | IO *io; |
a687059c |
575 | |
79072805 |
576 | if (!gv) |
577 | gv = argvgv; |
a0d0e21e |
578 | if (!gv || SvTYPE(gv) != SVt_PVGV) { |
748a9306 |
579 | SETERRNO(EBADF,SS$_IVCHAN); |
c2ab57d4 |
580 | return FALSE; |
99b89507 |
581 | } |
79072805 |
582 | io = GvIO(gv); |
583 | if (!io) { /* never opened */ |
517844ec |
584 | if (dowarn && not_implicit) |
79072805 |
585 | warn("Close on unopened file <%s>",GvENAME(gv)); |
a687059c |
586 | return FALSE; |
587 | } |
1193dd27 |
588 | retval = io_close(io); |
517844ec |
589 | if (not_implicit) { |
1193dd27 |
590 | IoLINES(io) = 0; |
591 | IoPAGE(io) = 0; |
592 | IoLINES_LEFT(io) = IoPAGE_LEN(io); |
593 | } |
594 | IoTYPE(io) = ' '; |
595 | return retval; |
596 | } |
597 | |
598 | bool |
599 | io_close(io) |
600 | IO* io; |
601 | { |
602 | bool retval = FALSE; |
603 | int status; |
604 | |
8990e307 |
605 | if (IoIFP(io)) { |
606 | if (IoTYPE(io) == '|') { |
607 | status = my_pclose(IoIFP(io)); |
f86702cc |
608 | STATUS_NATIVE_SET(status); |
1e422769 |
609 | retval = (STATUS_POSIX == 0); |
a687059c |
610 | } |
8990e307 |
611 | else if (IoTYPE(io) == '-') |
a687059c |
612 | retval = TRUE; |
613 | else { |
8990e307 |
614 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */ |
760ac839 |
615 | retval = (PerlIO_close(IoOFP(io)) != EOF); |
616 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ |
c2ab57d4 |
617 | } |
618 | else |
760ac839 |
619 | retval = (PerlIO_close(IoIFP(io)) != EOF); |
a687059c |
620 | } |
8990e307 |
621 | IoOFP(io) = IoIFP(io) = Nullfp; |
79072805 |
622 | } |
1193dd27 |
623 | |
a687059c |
624 | return retval; |
625 | } |
626 | |
627 | bool |
79072805 |
628 | do_eof(gv) |
629 | GV *gv; |
a687059c |
630 | { |
11343788 |
631 | dTHR; |
79072805 |
632 | register IO *io; |
a687059c |
633 | int ch; |
634 | |
79072805 |
635 | io = GvIO(gv); |
a687059c |
636 | |
79072805 |
637 | if (!io) |
a687059c |
638 | return TRUE; |
639 | |
8990e307 |
640 | while (IoIFP(io)) { |
a687059c |
641 | |
760ac839 |
642 | if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */ |
643 | if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */ |
644 | return FALSE; /* this is the most usual case */ |
645 | } |
a687059c |
646 | |
760ac839 |
647 | ch = PerlIO_getc(IoIFP(io)); |
a687059c |
648 | if (ch != EOF) { |
760ac839 |
649 | (void)PerlIO_ungetc(IoIFP(io),ch); |
a687059c |
650 | return FALSE; |
651 | } |
760ac839 |
652 | if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) { |
653 | if (PerlIO_get_cnt(IoIFP(io)) < -1) |
654 | PerlIO_set_cnt(IoIFP(io),-1); |
655 | } |
8990e307 |
656 | if (op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */ |
79072805 |
657 | if (!nextargv(argvgv)) /* get another fp handy */ |
a687059c |
658 | return TRUE; |
659 | } |
660 | else |
661 | return TRUE; /* normal fp, definitely end of file */ |
662 | } |
663 | return TRUE; |
664 | } |
665 | |
666 | long |
79072805 |
667 | do_tell(gv) |
668 | GV *gv; |
a687059c |
669 | { |
79072805 |
670 | register IO *io; |
96e4d5b1 |
671 | register PerlIO *fp; |
a687059c |
672 | |
96e4d5b1 |
673 | if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) { |
bee1dbe2 |
674 | #ifdef ULTRIX_STDIO_BOTCH |
96e4d5b1 |
675 | if (PerlIO_eof(fp)) |
676 | (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */ |
bee1dbe2 |
677 | #endif |
8903cb82 |
678 | return PerlIO_tell(fp); |
96e4d5b1 |
679 | } |
a687059c |
680 | if (dowarn) |
8903cb82 |
681 | warn("tell() on unopened file"); |
748a9306 |
682 | SETERRNO(EBADF,RMS$_IFI); |
a687059c |
683 | return -1L; |
684 | } |
685 | |
686 | bool |
79072805 |
687 | do_seek(gv, pos, whence) |
688 | GV *gv; |
a687059c |
689 | long pos; |
690 | int whence; |
691 | { |
79072805 |
692 | register IO *io; |
137443ea |
693 | register PerlIO *fp; |
a687059c |
694 | |
137443ea |
695 | if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) { |
bee1dbe2 |
696 | #ifdef ULTRIX_STDIO_BOTCH |
137443ea |
697 | if (PerlIO_eof(fp)) |
698 | (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */ |
bee1dbe2 |
699 | #endif |
8903cb82 |
700 | return PerlIO_seek(fp, pos, whence) >= 0; |
137443ea |
701 | } |
a687059c |
702 | if (dowarn) |
8903cb82 |
703 | warn("seek() on unopened file"); |
748a9306 |
704 | SETERRNO(EBADF,RMS$_IFI); |
a687059c |
705 | return FALSE; |
706 | } |
707 | |
8903cb82 |
708 | long |
709 | do_sysseek(gv, pos, whence) |
710 | GV *gv; |
711 | long pos; |
712 | int whence; |
713 | { |
714 | register IO *io; |
715 | register PerlIO *fp; |
716 | |
717 | if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) |
718 | return lseek(PerlIO_fileno(fp), pos, whence); |
719 | if (dowarn) |
720 | warn("sysseek() on unopened file"); |
721 | SETERRNO(EBADF,RMS$_IFI); |
722 | return -1L; |
723 | } |
724 | |
a0d0e21e |
725 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP) |
c2ab57d4 |
726 | /* code courtesy of William Kucharski */ |
fe14fcc3 |
727 | #define HAS_CHSIZE |
6eb13c3b |
728 | |
517844ec |
729 | I32 my_chsize(fd, length) |
79072805 |
730 | I32 fd; /* file descriptor */ |
85e6fe83 |
731 | Off_t length; /* length to set file to */ |
6eb13c3b |
732 | { |
6eb13c3b |
733 | struct flock fl; |
734 | struct stat filebuf; |
735 | |
a0d0e21e |
736 | if (Fstat(fd, &filebuf) < 0) |
6eb13c3b |
737 | return -1; |
738 | |
739 | if (filebuf.st_size < length) { |
740 | |
741 | /* extend file length */ |
742 | |
743 | if ((lseek(fd, (length - 1), 0)) < 0) |
744 | return -1; |
745 | |
746 | /* write a "0" byte */ |
747 | |
748 | if ((write(fd, "", 1)) != 1) |
749 | return -1; |
750 | } |
751 | else { |
752 | /* truncate length */ |
753 | |
754 | fl.l_whence = 0; |
755 | fl.l_len = 0; |
756 | fl.l_start = length; |
a0d0e21e |
757 | fl.l_type = F_WRLCK; /* write lock on file space */ |
6eb13c3b |
758 | |
759 | /* |
a0d0e21e |
760 | * This relies on the UNDOCUMENTED F_FREESP argument to |
6eb13c3b |
761 | * fcntl(2), which truncates the file so that it ends at the |
762 | * position indicated by fl.l_start. |
763 | * |
764 | * Will minor miracles never cease? |
765 | */ |
766 | |
a0d0e21e |
767 | if (fcntl(fd, F_FREESP, &fl) < 0) |
6eb13c3b |
768 | return -1; |
769 | |
770 | } |
771 | |
772 | return 0; |
773 | } |
a0d0e21e |
774 | #endif /* F_FREESP */ |
ff8e2863 |
775 | |
a687059c |
776 | bool |
79072805 |
777 | do_print(sv,fp) |
778 | register SV *sv; |
760ac839 |
779 | PerlIO *fp; |
a687059c |
780 | { |
781 | register char *tmps; |
463ee0b2 |
782 | STRLEN len; |
a687059c |
783 | |
79072805 |
784 | /* assuming fp is checked earlier */ |
785 | if (!sv) |
786 | return TRUE; |
787 | if (ofmt) { |
8990e307 |
788 | if (SvGMAGICAL(sv)) |
79072805 |
789 | mg_get(sv); |
463ee0b2 |
790 | if (SvIOK(sv) && SvIVX(sv) != 0) { |
760ac839 |
791 | PerlIO_printf(fp, ofmt, (double)SvIVX(sv)); |
792 | return !PerlIO_error(fp); |
79072805 |
793 | } |
463ee0b2 |
794 | if ( (SvNOK(sv) && SvNVX(sv) != 0.0) |
79072805 |
795 | || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) { |
760ac839 |
796 | PerlIO_printf(fp, ofmt, SvNVX(sv)); |
797 | return !PerlIO_error(fp); |
79072805 |
798 | } |
a687059c |
799 | } |
79072805 |
800 | switch (SvTYPE(sv)) { |
801 | case SVt_NULL: |
8990e307 |
802 | if (dowarn) |
803 | warn(warn_uninit); |
ff8e2863 |
804 | return TRUE; |
79072805 |
805 | case SVt_IV: |
a0d0e21e |
806 | if (SvIOK(sv)) { |
807 | if (SvGMAGICAL(sv)) |
808 | mg_get(sv); |
760ac839 |
809 | PerlIO_printf(fp, "%ld", (long)SvIVX(sv)); |
810 | return !PerlIO_error(fp); |
a0d0e21e |
811 | } |
812 | /* FALL THROUGH */ |
79072805 |
813 | default: |
463ee0b2 |
814 | tmps = SvPV(sv, len); |
79072805 |
815 | break; |
ff8e2863 |
816 | } |
760ac839 |
817 | if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp))) |
a687059c |
818 | return FALSE; |
760ac839 |
819 | return !PerlIO_error(fp); |
a687059c |
820 | } |
821 | |
79072805 |
822 | I32 |
823 | my_stat(ARGS) |
824 | dARGS |
a687059c |
825 | { |
79072805 |
826 | dSP; |
827 | IO *io; |
748a9306 |
828 | GV* tmpgv; |
79072805 |
829 | |
a0d0e21e |
830 | if (op->op_flags & OPf_REF) { |
79072805 |
831 | EXTEND(sp,1); |
748a9306 |
832 | tmpgv = cGVOP->op_gv; |
833 | do_fstat: |
834 | io = GvIO(tmpgv); |
8990e307 |
835 | if (io && IoIFP(io)) { |
748a9306 |
836 | statgv = tmpgv; |
79072805 |
837 | sv_setpv(statname,""); |
838 | laststype = OP_STAT; |
760ac839 |
839 | return (laststatval = Fstat(PerlIO_fileno(IoIFP(io)), &statcache)); |
a687059c |
840 | } |
841 | else { |
748a9306 |
842 | if (tmpgv == defgv) |
57ebbfd0 |
843 | return laststatval; |
a687059c |
844 | if (dowarn) |
845 | warn("Stat on unopened file <%s>", |
748a9306 |
846 | GvENAME(tmpgv)); |
79072805 |
847 | statgv = Nullgv; |
848 | sv_setpv(statname,""); |
57ebbfd0 |
849 | return (laststatval = -1); |
a687059c |
850 | } |
851 | } |
852 | else { |
748a9306 |
853 | SV* sv = POPs; |
79072805 |
854 | PUTBACK; |
748a9306 |
855 | if (SvTYPE(sv) == SVt_PVGV) { |
856 | tmpgv = (GV*)sv; |
857 | goto do_fstat; |
858 | } |
859 | else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) { |
860 | tmpgv = (GV*)SvRV(sv); |
861 | goto do_fstat; |
862 | } |
863 | |
79072805 |
864 | statgv = Nullgv; |
463ee0b2 |
865 | sv_setpv(statname,SvPV(sv, na)); |
79072805 |
866 | laststype = OP_STAT; |
a0d0e21e |
867 | laststatval = Stat(SvPV(sv, na),&statcache); |
463ee0b2 |
868 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 |
869 | warn(warn_nl, "stat"); |
870 | return laststatval; |
a687059c |
871 | } |
872 | } |
873 | |
79072805 |
874 | I32 |
875 | my_lstat(ARGS) |
876 | dARGS |
c623bd54 |
877 | { |
79072805 |
878 | dSP; |
879 | SV *sv; |
a0d0e21e |
880 | if (op->op_flags & OPf_REF) { |
79072805 |
881 | EXTEND(sp,1); |
882 | if (cGVOP->op_gv == defgv) { |
883 | if (laststype != OP_LSTAT) |
463ee0b2 |
884 | croak("The stat preceding -l _ wasn't an lstat"); |
fe14fcc3 |
885 | return laststatval; |
886 | } |
463ee0b2 |
887 | croak("You can't use -l on a filehandle"); |
fe14fcc3 |
888 | } |
c623bd54 |
889 | |
79072805 |
890 | laststype = OP_LSTAT; |
891 | statgv = Nullgv; |
892 | sv = POPs; |
893 | PUTBACK; |
463ee0b2 |
894 | sv_setpv(statname,SvPV(sv, na)); |
fe14fcc3 |
895 | #ifdef HAS_LSTAT |
463ee0b2 |
896 | laststatval = lstat(SvPV(sv, na),&statcache); |
c623bd54 |
897 | #else |
a0d0e21e |
898 | laststatval = Stat(SvPV(sv, na),&statcache); |
c623bd54 |
899 | #endif |
463ee0b2 |
900 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 |
901 | warn(warn_nl, "lstat"); |
902 | return laststatval; |
c623bd54 |
903 | } |
904 | |
a687059c |
905 | bool |
79072805 |
906 | do_aexec(really,mark,sp) |
907 | SV *really; |
908 | register SV **mark; |
909 | register SV **sp; |
a687059c |
910 | { |
a687059c |
911 | register char **a; |
a687059c |
912 | char *tmps; |
913 | |
79072805 |
914 | if (sp > mark) { |
11343788 |
915 | dTHR; |
79072805 |
916 | New(401,Argv, sp - mark + 1, char*); |
bee1dbe2 |
917 | a = Argv; |
79072805 |
918 | while (++mark <= sp) { |
919 | if (*mark) |
463ee0b2 |
920 | *a++ = SvPVx(*mark, na); |
a687059c |
921 | else |
922 | *a++ = ""; |
923 | } |
924 | *a = Nullch; |
bee1dbe2 |
925 | if (*Argv[0] != '/') /* will execvp use PATH? */ |
79072805 |
926 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
463ee0b2 |
927 | if (really && *(tmps = SvPV(really, na))) |
bee1dbe2 |
928 | execvp(tmps,Argv); |
a687059c |
929 | else |
bee1dbe2 |
930 | execvp(Argv[0],Argv); |
a0d0e21e |
931 | if (dowarn) |
932 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); |
a687059c |
933 | } |
bee1dbe2 |
934 | do_execfree(); |
a687059c |
935 | return FALSE; |
936 | } |
937 | |
fe14fcc3 |
938 | void |
ff8e2863 |
939 | do_execfree() |
940 | { |
941 | if (Argv) { |
942 | Safefree(Argv); |
943 | Argv = Null(char **); |
944 | } |
945 | if (Cmd) { |
946 | Safefree(Cmd); |
947 | Cmd = Nullch; |
948 | } |
949 | } |
950 | |
6890e559 |
951 | #if !defined(OS2) && !defined(WIN32) |
760ac839 |
952 | |
a687059c |
953 | bool |
954 | do_exec(cmd) |
955 | char *cmd; |
956 | { |
957 | register char **a; |
958 | register char *s; |
a687059c |
959 | char flags[10]; |
960 | |
748a9306 |
961 | while (*cmd && isSPACE(*cmd)) |
962 | cmd++; |
963 | |
a687059c |
964 | /* save an extra exec if possible */ |
965 | |
bf38876a |
966 | #ifdef CSH |
967 | if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) { |
a687059c |
968 | strcpy(flags,"-c"); |
bf38876a |
969 | s = cmd+cshlen+3; |
a687059c |
970 | if (*s == 'f') { |
971 | s++; |
972 | strcat(flags,"f"); |
973 | } |
974 | if (*s == ' ') |
975 | s++; |
976 | if (*s++ == '\'') { |
977 | char *ncmd = s; |
978 | |
979 | while (*s) |
980 | s++; |
981 | if (s[-1] == '\n') |
982 | *--s = '\0'; |
983 | if (s[-1] == '\'') { |
984 | *--s = '\0'; |
bf38876a |
985 | execl(cshname,"csh", flags,ncmd,(char*)0); |
a687059c |
986 | *s = '\''; |
987 | return FALSE; |
988 | } |
989 | } |
990 | } |
bf38876a |
991 | #endif /* CSH */ |
a687059c |
992 | |
993 | /* see if there are shell metacharacters in it */ |
994 | |
748a9306 |
995 | if (*cmd == '.' && isSPACE(cmd[1])) |
996 | goto doshell; |
997 | |
998 | if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4])) |
999 | goto doshell; |
1000 | |
99b89507 |
1001 | for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */ |
63f2c1e1 |
1002 | if (*s == '=') |
1003 | goto doshell; |
748a9306 |
1004 | |
a687059c |
1005 | for (s = cmd; *s; s++) { |
93a17b20 |
1006 | if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c |
1007 | if (*s == '\n' && !s[1]) { |
1008 | *s = '\0'; |
1009 | break; |
1010 | } |
1011 | doshell: |
ff68c719 |
1012 | execl(sh_path, "sh", "-c", cmd, (char*)0); |
a687059c |
1013 | return FALSE; |
1014 | } |
1015 | } |
748a9306 |
1016 | |
ff8e2863 |
1017 | New(402,Argv, (s - cmd) / 2 + 2, char*); |
a0d0e21e |
1018 | Cmd = savepvn(cmd, s-cmd); |
ff8e2863 |
1019 | a = Argv; |
1020 | for (s = Cmd; *s;) { |
99b89507 |
1021 | while (*s && isSPACE(*s)) s++; |
a687059c |
1022 | if (*s) |
1023 | *(a++) = s; |
99b89507 |
1024 | while (*s && !isSPACE(*s)) s++; |
a687059c |
1025 | if (*s) |
1026 | *s++ = '\0'; |
1027 | } |
1028 | *a = Nullch; |
ff8e2863 |
1029 | if (Argv[0]) { |
1030 | execvp(Argv[0],Argv); |
b1248f16 |
1031 | if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
ff8e2863 |
1032 | do_execfree(); |
a687059c |
1033 | goto doshell; |
b1248f16 |
1034 | } |
a0d0e21e |
1035 | if (dowarn) |
1036 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); |
a687059c |
1037 | } |
ff8e2863 |
1038 | do_execfree(); |
a687059c |
1039 | return FALSE; |
1040 | } |
1041 | |
6890e559 |
1042 | #endif /* OS2 || WIN32 */ |
760ac839 |
1043 | |
79072805 |
1044 | I32 |
1045 | apply(type,mark,sp) |
1046 | I32 type; |
1047 | register SV **mark; |
1048 | register SV **sp; |
a687059c |
1049 | { |
11343788 |
1050 | dTHR; |
79072805 |
1051 | register I32 val; |
1052 | register I32 val2; |
1053 | register I32 tot = 0; |
a687059c |
1054 | char *s; |
79072805 |
1055 | SV **oldmark = mark; |
a687059c |
1056 | |
463ee0b2 |
1057 | if (tainting) { |
1058 | while (++mark <= sp) { |
bbce6d69 |
1059 | if (SvTAINTED(*mark)) { |
1060 | TAINT; |
1061 | break; |
1062 | } |
463ee0b2 |
1063 | } |
1064 | mark = oldmark; |
1065 | } |
a687059c |
1066 | switch (type) { |
79072805 |
1067 | case OP_CHMOD: |
1068 | TAINT_PROPER("chmod"); |
1069 | if (++mark <= sp) { |
1070 | tot = sp - mark; |
463ee0b2 |
1071 | val = SvIVx(*mark); |
79072805 |
1072 | while (++mark <= sp) { |
463ee0b2 |
1073 | if (chmod(SvPVx(*mark, na),val)) |
a687059c |
1074 | tot--; |
1075 | } |
1076 | } |
1077 | break; |
fe14fcc3 |
1078 | #ifdef HAS_CHOWN |
79072805 |
1079 | case OP_CHOWN: |
1080 | TAINT_PROPER("chown"); |
1081 | if (sp - mark > 2) { |
463ee0b2 |
1082 | val = SvIVx(*++mark); |
1083 | val2 = SvIVx(*++mark); |
a0d0e21e |
1084 | tot = sp - mark; |
79072805 |
1085 | while (++mark <= sp) { |
463ee0b2 |
1086 | if (chown(SvPVx(*mark, na),val,val2)) |
a687059c |
1087 | tot--; |
1088 | } |
1089 | } |
1090 | break; |
b1248f16 |
1091 | #endif |
fe14fcc3 |
1092 | #ifdef HAS_KILL |
79072805 |
1093 | case OP_KILL: |
1094 | TAINT_PROPER("kill"); |
55497cff |
1095 | if (mark == sp) |
1096 | break; |
463ee0b2 |
1097 | s = SvPVx(*++mark, na); |
79072805 |
1098 | tot = sp - mark; |
1099 | if (isUPPER(*s)) { |
1100 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') |
1101 | s += 3; |
1102 | if (!(val = whichsig(s))) |
463ee0b2 |
1103 | croak("Unrecognized signal name \"%s\"",s); |
79072805 |
1104 | } |
1105 | else |
463ee0b2 |
1106 | val = SvIVx(*mark); |
3595fcef |
1107 | #ifdef VMS |
1108 | /* kill() doesn't do process groups (job trees?) under VMS */ |
1109 | if (val < 0) val = -val; |
1110 | if (val == SIGKILL) { |
1111 | # include <starlet.h> |
1112 | /* Use native sys$delprc() to insure that target process is |
1113 | * deleted; supervisor-mode images don't pay attention to |
1114 | * CRTL's emulation of Unix-style signals and kill() |
1115 | */ |
1116 | while (++mark <= sp) { |
1117 | I32 proc = SvIVx(*mark); |
1118 | register unsigned long int __vmssts; |
1119 | if (!((__vmssts = sys$delprc(&proc,0)) & 1)) { |
1120 | tot--; |
1121 | switch (__vmssts) { |
1122 | case SS$_NONEXPR: |
1123 | case SS$_NOSUCHNODE: |
1124 | SETERRNO(ESRCH,__vmssts); |
1125 | break; |
1126 | case SS$_NOPRIV: |
1127 | SETERRNO(EPERM,__vmssts); |
1128 | break; |
1129 | default: |
1130 | SETERRNO(EVMSERR,__vmssts); |
1131 | } |
1132 | } |
1133 | } |
1134 | break; |
1135 | } |
1136 | #endif |
79072805 |
1137 | if (val < 0) { |
1138 | val = -val; |
1139 | while (++mark <= sp) { |
463ee0b2 |
1140 | I32 proc = SvIVx(*mark); |
fe14fcc3 |
1141 | #ifdef HAS_KILLPG |
79072805 |
1142 | if (killpg(proc,val)) /* BSD */ |
a687059c |
1143 | #else |
79072805 |
1144 | if (kill(-proc,val)) /* SYSV */ |
a687059c |
1145 | #endif |
79072805 |
1146 | tot--; |
a687059c |
1147 | } |
79072805 |
1148 | } |
1149 | else { |
1150 | while (++mark <= sp) { |
463ee0b2 |
1151 | if (kill(SvIVx(*mark),val)) |
79072805 |
1152 | tot--; |
a687059c |
1153 | } |
1154 | } |
1155 | break; |
b1248f16 |
1156 | #endif |
79072805 |
1157 | case OP_UNLINK: |
1158 | TAINT_PROPER("unlink"); |
1159 | tot = sp - mark; |
1160 | while (++mark <= sp) { |
463ee0b2 |
1161 | s = SvPVx(*mark, na); |
a687059c |
1162 | if (euid || unsafe) { |
1163 | if (UNLINK(s)) |
1164 | tot--; |
1165 | } |
1166 | else { /* don't let root wipe out directories without -U */ |
fe14fcc3 |
1167 | #ifdef HAS_LSTAT |
c623bd54 |
1168 | if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c |
1169 | #else |
a0d0e21e |
1170 | if (Stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c |
1171 | #endif |
a687059c |
1172 | tot--; |
1173 | else { |
1174 | if (UNLINK(s)) |
1175 | tot--; |
1176 | } |
1177 | } |
1178 | } |
1179 | break; |
a0d0e21e |
1180 | #ifdef HAS_UTIME |
79072805 |
1181 | case OP_UTIME: |
1182 | TAINT_PROPER("utime"); |
1183 | if (sp - mark > 2) { |
748a9306 |
1184 | #if defined(I_UTIME) || defined(VMS) |
663a0e37 |
1185 | struct utimbuf utbuf; |
1186 | #else |
a687059c |
1187 | struct { |
663a0e37 |
1188 | long actime; |
1189 | long modtime; |
a687059c |
1190 | } utbuf; |
663a0e37 |
1191 | #endif |
a687059c |
1192 | |
afd9f252 |
1193 | Zero(&utbuf, sizeof utbuf, char); |
517844ec |
1194 | #ifdef BIG_TIME |
1195 | utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */ |
1196 | utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */ |
1197 | #else |
463ee0b2 |
1198 | utbuf.actime = SvIVx(*++mark); /* time accessed */ |
1199 | utbuf.modtime = SvIVx(*++mark); /* time modified */ |
517844ec |
1200 | #endif |
79072805 |
1201 | tot = sp - mark; |
1202 | while (++mark <= sp) { |
463ee0b2 |
1203 | if (utime(SvPVx(*mark, na),&utbuf)) |
a687059c |
1204 | tot--; |
1205 | } |
a687059c |
1206 | } |
1207 | else |
79072805 |
1208 | tot = 0; |
a687059c |
1209 | break; |
a0d0e21e |
1210 | #endif |
a687059c |
1211 | } |
1212 | return tot; |
1213 | } |
1214 | |
1215 | /* Do the permissions allow some operation? Assumes statcache already set. */ |
a0d0e21e |
1216 | #ifndef VMS /* VMS' cando is in vms.c */ |
79072805 |
1217 | I32 |
a687059c |
1218 | cando(bit, effective, statbufp) |
79072805 |
1219 | I32 bit; |
1220 | I32 effective; |
a687059c |
1221 | register struct stat *statbufp; |
1222 | { |
bee1dbe2 |
1223 | #ifdef DOSISH |
fe14fcc3 |
1224 | /* [Comments and code from Len Reed] |
1225 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write |
1226 | * to write-protected files. The execute permission bit is set |
1227 | * by the Miscrosoft C library stat() function for the following: |
1228 | * .exe files |
1229 | * .com files |
1230 | * .bat files |
1231 | * directories |
1232 | * All files and directories are readable. |
1233 | * Directories and special files, e.g. "CON", cannot be |
1234 | * write-protected. |
1235 | * [Comment by Tom Dinger -- a directory can have the write-protect |
1236 | * bit set in the file system, but DOS permits changes to |
1237 | * the directory anyway. In addition, all bets are off |
1238 | * here for networked software, such as Novell and |
1239 | * Sun's PC-NFS.] |
1240 | */ |
1241 | |
bee1dbe2 |
1242 | /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat |
1243 | * too so it will actually look into the files for magic numbers |
1244 | */ |
fe14fcc3 |
1245 | return (bit & statbufp->st_mode) ? TRUE : FALSE; |
1246 | |
55497cff |
1247 | #else /* ! DOSISH */ |
a687059c |
1248 | if ((effective ? euid : uid) == 0) { /* root is special */ |
c623bd54 |
1249 | if (bit == S_IXUSR) { |
1250 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) |
a687059c |
1251 | return TRUE; |
1252 | } |
1253 | else |
1254 | return TRUE; /* root reads and writes anything */ |
1255 | return FALSE; |
1256 | } |
1257 | if (statbufp->st_uid == (effective ? euid : uid) ) { |
1258 | if (statbufp->st_mode & bit) |
1259 | return TRUE; /* ok as "user" */ |
1260 | } |
79072805 |
1261 | else if (ingroup((I32)statbufp->st_gid,effective)) { |
a687059c |
1262 | if (statbufp->st_mode & bit >> 3) |
1263 | return TRUE; /* ok as "group" */ |
1264 | } |
1265 | else if (statbufp->st_mode & bit >> 6) |
1266 | return TRUE; /* ok as "other" */ |
1267 | return FALSE; |
55497cff |
1268 | #endif /* ! DOSISH */ |
a687059c |
1269 | } |
a0d0e21e |
1270 | #endif /* ! VMS */ |
a687059c |
1271 | |
79072805 |
1272 | I32 |
a687059c |
1273 | ingroup(testgid,effective) |
79072805 |
1274 | I32 testgid; |
1275 | I32 effective; |
a687059c |
1276 | { |
1277 | if (testgid == (effective ? egid : gid)) |
1278 | return TRUE; |
fe14fcc3 |
1279 | #ifdef HAS_GETGROUPS |
a687059c |
1280 | #ifndef NGROUPS |
1281 | #define NGROUPS 32 |
1282 | #endif |
1283 | { |
a0d0e21e |
1284 | Groups_t gary[NGROUPS]; |
79072805 |
1285 | I32 anum; |
a687059c |
1286 | |
1287 | anum = getgroups(NGROUPS,gary); |
1288 | while (--anum >= 0) |
1289 | if (gary[anum] == testgid) |
1290 | return TRUE; |
1291 | } |
1292 | #endif |
1293 | return FALSE; |
1294 | } |
c2ab57d4 |
1295 | |
fe14fcc3 |
1296 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 |
1297 | |
79072805 |
1298 | I32 |
1299 | do_ipcget(optype, mark, sp) |
1300 | I32 optype; |
1301 | SV **mark; |
1302 | SV **sp; |
c2ab57d4 |
1303 | { |
11343788 |
1304 | dTHR; |
c2ab57d4 |
1305 | key_t key; |
79072805 |
1306 | I32 n, flags; |
c2ab57d4 |
1307 | |
463ee0b2 |
1308 | key = (key_t)SvNVx(*++mark); |
1309 | n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark); |
1310 | flags = SvIVx(*++mark); |
748a9306 |
1311 | SETERRNO(0,0); |
c2ab57d4 |
1312 | switch (optype) |
1313 | { |
fe14fcc3 |
1314 | #ifdef HAS_MSG |
79072805 |
1315 | case OP_MSGGET: |
c2ab57d4 |
1316 | return msgget(key, flags); |
e5d73d77 |
1317 | #endif |
fe14fcc3 |
1318 | #ifdef HAS_SEM |
79072805 |
1319 | case OP_SEMGET: |
c2ab57d4 |
1320 | return semget(key, n, flags); |
e5d73d77 |
1321 | #endif |
fe14fcc3 |
1322 | #ifdef HAS_SHM |
79072805 |
1323 | case OP_SHMGET: |
c2ab57d4 |
1324 | return shmget(key, n, flags); |
e5d73d77 |
1325 | #endif |
fe14fcc3 |
1326 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
1327 | default: |
c07a80fd |
1328 | croak("%s not implemented", op_desc[optype]); |
e5d73d77 |
1329 | #endif |
c2ab57d4 |
1330 | } |
1331 | return -1; /* should never happen */ |
1332 | } |
1333 | |
79072805 |
1334 | I32 |
1335 | do_ipcctl(optype, mark, sp) |
1336 | I32 optype; |
1337 | SV **mark; |
1338 | SV **sp; |
c2ab57d4 |
1339 | { |
11343788 |
1340 | dTHR; |
79072805 |
1341 | SV *astr; |
c2ab57d4 |
1342 | char *a; |
a0d0e21e |
1343 | I32 id, n, cmd, infosize, getinfo; |
1344 | I32 ret = -1; |
3e3baf6d |
1345 | #ifdef __linux__ /* XXX Need metaconfig test */ |
1346 | union semun unsemds; |
1347 | #endif |
c2ab57d4 |
1348 | |
463ee0b2 |
1349 | id = SvIVx(*++mark); |
1350 | n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0; |
1351 | cmd = SvIVx(*++mark); |
79072805 |
1352 | astr = *++mark; |
c2ab57d4 |
1353 | infosize = 0; |
1354 | getinfo = (cmd == IPC_STAT); |
1355 | |
1356 | switch (optype) |
1357 | { |
fe14fcc3 |
1358 | #ifdef HAS_MSG |
79072805 |
1359 | case OP_MSGCTL: |
c2ab57d4 |
1360 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1361 | infosize = sizeof(struct msqid_ds); |
1362 | break; |
e5d73d77 |
1363 | #endif |
fe14fcc3 |
1364 | #ifdef HAS_SHM |
79072805 |
1365 | case OP_SHMCTL: |
c2ab57d4 |
1366 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1367 | infosize = sizeof(struct shmid_ds); |
1368 | break; |
e5d73d77 |
1369 | #endif |
fe14fcc3 |
1370 | #ifdef HAS_SEM |
79072805 |
1371 | case OP_SEMCTL: |
c2ab57d4 |
1372 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1373 | infosize = sizeof(struct semid_ds); |
1374 | else if (cmd == GETALL || cmd == SETALL) |
1375 | { |
8e591e46 |
1376 | struct semid_ds semds; |
3e3baf6d |
1377 | #ifdef __linux__ /* XXX Need metaconfig test */ |
84902520 |
1378 | /* linux (and Solaris2?) uses : |
1379 | int semctl (int semid, int semnum, int cmd, union semun arg) |
3e3baf6d |
1380 | union semun { |
1381 | int val; |
1382 | struct semid_ds *buf; |
1383 | ushort *array; |
1384 | }; |
1385 | */ |
84902520 |
1386 | union semun semun; |
1387 | semun.buf = &semds; |
1388 | if (semctl(id, 0, IPC_STAT, semun) == -1) |
3e3baf6d |
1389 | #else |
c2ab57d4 |
1390 | if (semctl(id, 0, IPC_STAT, &semds) == -1) |
3e3baf6d |
1391 | #endif |
c2ab57d4 |
1392 | return -1; |
1393 | getinfo = (cmd == GETALL); |
6e21c824 |
1394 | infosize = semds.sem_nsems * sizeof(short); |
1395 | /* "short" is technically wrong but much more portable |
1396 | than guessing about u_?short(_t)? */ |
c2ab57d4 |
1397 | } |
1398 | break; |
e5d73d77 |
1399 | #endif |
fe14fcc3 |
1400 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
1401 | default: |
c07a80fd |
1402 | croak("%s not implemented", op_desc[optype]); |
e5d73d77 |
1403 | #endif |
c2ab57d4 |
1404 | } |
1405 | |
1406 | if (infosize) |
1407 | { |
a0d0e21e |
1408 | STRLEN len; |
c2ab57d4 |
1409 | if (getinfo) |
1410 | { |
a0d0e21e |
1411 | SvPV_force(astr, len); |
1412 | a = SvGROW(astr, infosize+1); |
c2ab57d4 |
1413 | } |
1414 | else |
1415 | { |
463ee0b2 |
1416 | a = SvPV(astr, len); |
1417 | if (len != infosize) |
9607fc9c |
1418 | croak("Bad arg length for %s, is %lu, should be %ld", |
1419 | op_desc[optype], (unsigned long)len, (long)infosize); |
c2ab57d4 |
1420 | } |
1421 | } |
1422 | else |
1423 | { |
c030ccd9 |
1424 | IV i = SvIV(astr); |
c2ab57d4 |
1425 | a = (char *)i; /* ouch */ |
1426 | } |
748a9306 |
1427 | SETERRNO(0,0); |
c2ab57d4 |
1428 | switch (optype) |
1429 | { |
fe14fcc3 |
1430 | #ifdef HAS_MSG |
79072805 |
1431 | case OP_MSGCTL: |
bee1dbe2 |
1432 | ret = msgctl(id, cmd, (struct msqid_ds *)a); |
c2ab57d4 |
1433 | break; |
e5d73d77 |
1434 | #endif |
fe14fcc3 |
1435 | #ifdef HAS_SEM |
79072805 |
1436 | case OP_SEMCTL: |
3e3baf6d |
1437 | #ifdef __linux__ /* XXX Need metaconfig test */ |
1438 | unsemds.buf = (struct semid_ds *)a; |
1439 | ret = semctl(id, n, cmd, unsemds); |
1440 | #else |
79072805 |
1441 | ret = semctl(id, n, cmd, (struct semid_ds *)a); |
3e3baf6d |
1442 | #endif |
c2ab57d4 |
1443 | break; |
e5d73d77 |
1444 | #endif |
fe14fcc3 |
1445 | #ifdef HAS_SHM |
79072805 |
1446 | case OP_SHMCTL: |
bee1dbe2 |
1447 | ret = shmctl(id, cmd, (struct shmid_ds *)a); |
c2ab57d4 |
1448 | break; |
e5d73d77 |
1449 | #endif |
c2ab57d4 |
1450 | } |
1451 | if (getinfo && ret >= 0) { |
79072805 |
1452 | SvCUR_set(astr, infosize); |
1453 | *SvEND(astr) = '\0'; |
a0d0e21e |
1454 | SvSETMAGIC(astr); |
c2ab57d4 |
1455 | } |
1456 | return ret; |
1457 | } |
1458 | |
79072805 |
1459 | I32 |
1460 | do_msgsnd(mark, sp) |
1461 | SV **mark; |
1462 | SV **sp; |
c2ab57d4 |
1463 | { |
fe14fcc3 |
1464 | #ifdef HAS_MSG |
11343788 |
1465 | dTHR; |
79072805 |
1466 | SV *mstr; |
c2ab57d4 |
1467 | char *mbuf; |
79072805 |
1468 | I32 id, msize, flags; |
463ee0b2 |
1469 | STRLEN len; |
c2ab57d4 |
1470 | |
463ee0b2 |
1471 | id = SvIVx(*++mark); |
79072805 |
1472 | mstr = *++mark; |
463ee0b2 |
1473 | flags = SvIVx(*++mark); |
1474 | mbuf = SvPV(mstr, len); |
1475 | if ((msize = len - sizeof(long)) < 0) |
1476 | croak("Arg too short for msgsnd"); |
748a9306 |
1477 | SETERRNO(0,0); |
bee1dbe2 |
1478 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); |
e5d73d77 |
1479 | #else |
463ee0b2 |
1480 | croak("msgsnd not implemented"); |
e5d73d77 |
1481 | #endif |
c2ab57d4 |
1482 | } |
1483 | |
79072805 |
1484 | I32 |
1485 | do_msgrcv(mark, sp) |
1486 | SV **mark; |
1487 | SV **sp; |
c2ab57d4 |
1488 | { |
fe14fcc3 |
1489 | #ifdef HAS_MSG |
11343788 |
1490 | dTHR; |
79072805 |
1491 | SV *mstr; |
c2ab57d4 |
1492 | char *mbuf; |
1493 | long mtype; |
79072805 |
1494 | I32 id, msize, flags, ret; |
463ee0b2 |
1495 | STRLEN len; |
79072805 |
1496 | |
463ee0b2 |
1497 | id = SvIVx(*++mark); |
79072805 |
1498 | mstr = *++mark; |
463ee0b2 |
1499 | msize = SvIVx(*++mark); |
1500 | mtype = (long)SvIVx(*++mark); |
1501 | flags = SvIVx(*++mark); |
ed6116ce |
1502 | if (SvTHINKFIRST(mstr)) { |
1503 | if (SvREADONLY(mstr)) |
1504 | croak("Can't msgrcv to readonly var"); |
1505 | if (SvROK(mstr)) |
1506 | sv_unref(mstr); |
1507 | } |
a0d0e21e |
1508 | SvPV_force(mstr, len); |
1509 | mbuf = SvGROW(mstr, sizeof(long)+msize+1); |
1510 | |
748a9306 |
1511 | SETERRNO(0,0); |
bee1dbe2 |
1512 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); |
c2ab57d4 |
1513 | if (ret >= 0) { |
79072805 |
1514 | SvCUR_set(mstr, sizeof(long)+ret); |
1515 | *SvEND(mstr) = '\0'; |
c2ab57d4 |
1516 | } |
1517 | return ret; |
e5d73d77 |
1518 | #else |
463ee0b2 |
1519 | croak("msgrcv not implemented"); |
e5d73d77 |
1520 | #endif |
c2ab57d4 |
1521 | } |
1522 | |
79072805 |
1523 | I32 |
1524 | do_semop(mark, sp) |
1525 | SV **mark; |
1526 | SV **sp; |
c2ab57d4 |
1527 | { |
fe14fcc3 |
1528 | #ifdef HAS_SEM |
11343788 |
1529 | dTHR; |
79072805 |
1530 | SV *opstr; |
c2ab57d4 |
1531 | char *opbuf; |
463ee0b2 |
1532 | I32 id; |
1533 | STRLEN opsize; |
c2ab57d4 |
1534 | |
463ee0b2 |
1535 | id = SvIVx(*++mark); |
79072805 |
1536 | opstr = *++mark; |
463ee0b2 |
1537 | opbuf = SvPV(opstr, opsize); |
c2ab57d4 |
1538 | if (opsize < sizeof(struct sembuf) |
1539 | || (opsize % sizeof(struct sembuf)) != 0) { |
748a9306 |
1540 | SETERRNO(EINVAL,LIB$_INVARG); |
c2ab57d4 |
1541 | return -1; |
1542 | } |
748a9306 |
1543 | SETERRNO(0,0); |
6e21c824 |
1544 | return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf)); |
e5d73d77 |
1545 | #else |
463ee0b2 |
1546 | croak("semop not implemented"); |
e5d73d77 |
1547 | #endif |
c2ab57d4 |
1548 | } |
1549 | |
79072805 |
1550 | I32 |
1551 | do_shmio(optype, mark, sp) |
1552 | I32 optype; |
1553 | SV **mark; |
1554 | SV **sp; |
c2ab57d4 |
1555 | { |
fe14fcc3 |
1556 | #ifdef HAS_SHM |
11343788 |
1557 | dTHR; |
79072805 |
1558 | SV *mstr; |
c2ab57d4 |
1559 | char *mbuf, *shm; |
79072805 |
1560 | I32 id, mpos, msize; |
463ee0b2 |
1561 | STRLEN len; |
c2ab57d4 |
1562 | struct shmid_ds shmds; |
c2ab57d4 |
1563 | |
463ee0b2 |
1564 | id = SvIVx(*++mark); |
79072805 |
1565 | mstr = *++mark; |
463ee0b2 |
1566 | mpos = SvIVx(*++mark); |
1567 | msize = SvIVx(*++mark); |
748a9306 |
1568 | SETERRNO(0,0); |
c2ab57d4 |
1569 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
1570 | return -1; |
1571 | if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) { |
748a9306 |
1572 | SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */ |
c2ab57d4 |
1573 | return -1; |
1574 | } |
a0d0e21e |
1575 | shm = (Shmat_t)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0); |
c2ab57d4 |
1576 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
1577 | return -1; |
79072805 |
1578 | if (optype == OP_SHMREAD) { |
a0d0e21e |
1579 | SvPV_force(mstr, len); |
1580 | mbuf = SvGROW(mstr, msize+1); |
1581 | |
bee1dbe2 |
1582 | Copy(shm + mpos, mbuf, msize, char); |
79072805 |
1583 | SvCUR_set(mstr, msize); |
1584 | *SvEND(mstr) = '\0'; |
a0d0e21e |
1585 | SvSETMAGIC(mstr); |
c2ab57d4 |
1586 | } |
1587 | else { |
79072805 |
1588 | I32 n; |
c2ab57d4 |
1589 | |
a0d0e21e |
1590 | mbuf = SvPV(mstr, len); |
463ee0b2 |
1591 | if ((n = len) > msize) |
c2ab57d4 |
1592 | n = msize; |
bee1dbe2 |
1593 | Copy(mbuf, shm + mpos, n, char); |
c2ab57d4 |
1594 | if (n < msize) |
bee1dbe2 |
1595 | memzero(shm + mpos + n, msize - n); |
c2ab57d4 |
1596 | } |
1597 | return shmdt(shm); |
e5d73d77 |
1598 | #else |
463ee0b2 |
1599 | croak("shm I/O not implemented"); |
e5d73d77 |
1600 | #endif |
c2ab57d4 |
1601 | } |
1602 | |
fe14fcc3 |
1603 | #endif /* SYSV IPC */ |