Commit | Line | Data |
a0d0e21e |
1 | /* doio.c |
a687059c |
2 | * |
a0d0e21e |
3 | * Copyright (c) 1991-1994, 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 |
37 | #include <utime.h> |
38 | #endif |
ff8e2863 |
39 | #ifdef I_FCNTL |
40 | #include <fcntl.h> |
41 | #endif |
fe14fcc3 |
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 |
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 |
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 |
90 | saveifp = IoIFP(io); |
91 | saveofp = IoOFP(io); |
92 | savetype = IoTYPE(io); |
6e21c824 |
93 | result = 0; |
94 | } |
8990e307 |
95 | else if (IoTYPE(io) == '|') |
96 | result = my_pclose(IoIFP(io)); |
97 | else if (IoIFP(io) != IoOFP(io)) { |
98 | if (IoOFP(io)) { |
760ac839 |
99 | result = PerlIO_close(IoOFP(io)); |
100 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ |
c2ab57d4 |
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 |
220 | } |
221 | } |
c07a80fd |
222 | else if (*name == '<') { |
223 | /*SUPPRESS 530*/ |
224 | for (name++; isSPACE(*name); name++) ; |
bf38876a |
225 | mode[0] = 'r'; |
bf38876a |
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 |
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 |
239 | /*SUPPRESS 530*/ |
240 | for (; isSPACE(*name); name++) ; |
79072805 |
241 | if (strNE(name,"-")) |
242 | TAINT_ENV(); |
243 | TAINT_PROPER("piped open"); |
244 | fp = my_popen(name,"r"); |
8990e307 |
245 | IoTYPE(io) = '|'; |
a687059c |
246 | } |
247 | else { |
8990e307 |
248 | IoTYPE(io) = '<'; |
99b89507 |
249 | /*SUPPRESS 530*/ |
250 | for (; isSPACE(*name); name++) ; |
a687059c |
251 | if (strEQ(name,"-")) { |
760ac839 |
252 | fp = PerlIO_stdin(); |
8990e307 |
253 | IoTYPE(io) = '-'; |
a687059c |
254 | } |
255 | else |
760ac839 |
256 | fp = PerlIO_open(name,"r"); |
a687059c |
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 |
264 | if (IoTYPE(io) && |
265 | IoTYPE(io) != '|' && IoTYPE(io) != '-') { |
760ac839 |
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 |
272 | #ifdef HAS_SOCKET |
273 | else if ( |
c623bd54 |
274 | #ifdef S_IFMT |
99b89507 |
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 |
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 |
294 | if (fd > 2) |
295 | Safefree(saveofp); |
6e21c824 |
296 | } |
297 | } |
760ac839 |
298 | if (fd != PerlIO_fileno(fp)) { |
bee1dbe2 |
299 | int pid; |
79072805 |
300 | SV *sv; |
bee1dbe2 |
301 | |
760ac839 |
302 | dup2(PerlIO_fileno(fp), fd); |
303 | sv = *av_fetch(fdpid,PerlIO_fileno(fp),TRUE); |
a0d0e21e |
304 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 |
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 |
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 |
322 | if (IoTYPE(io) == 's' |
323 | || (IoTYPE(io) == '>' && S_ISCHR(statbuf.st_mode)) ) { |
760ac839 |
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 |
329 | } |
330 | else |
8990e307 |
331 | IoOFP(io) = fp; |
bf38876a |
332 | } |
a687059c |
333 | return TRUE; |
6e21c824 |
334 | |
335 | say_false: |
8990e307 |
336 | IoIFP(io) = saveifp; |
337 | IoOFP(io) = saveofp; |
338 | IoTYPE(io) = savetype; |
6e21c824 |
339 | return FALSE; |
a687059c |
340 | } |
341 | |
760ac839 |
342 | PerlIO * |
79072805 |
343 | nextargv(gv) |
344 | register GV *gv; |
a687059c |
345 | { |
79072805 |
346 | register SV *sv; |
99b89507 |
347 | #ifndef FLEXFILENAMES |
c623bd54 |
348 | int filedev; |
349 | int fileino; |
99b89507 |
350 | #endif |
c623bd54 |
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 |
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 |
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 |
380 | filedev = statbuf.st_dev; |
381 | fileino = statbuf.st_ino; |
99b89507 |
382 | #endif |
a687059c |
383 | filemode = statbuf.st_mode; |
384 | fileuid = statbuf.st_uid; |
385 | filegid = statbuf.st_gid; |
c623bd54 |
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 |
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 |
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 |
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 |
414 | continue; |
415 | } |
a687059c |
416 | #else |
79072805 |
417 | do_close(gv,FALSE); |
463ee0b2 |
418 | (void)unlink(SvPVX(sv)); |
419 | (void)rename(oldname,SvPVX(sv)); |
1193dd27 |
420 | do_open(gv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp); |
ff8e2863 |
421 | #endif /* MSDOS */ |
422 | #else |
463ee0b2 |
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 |
428 | continue; |
429 | } |
a687059c |
430 | (void)UNLINK(oldname); |
431 | #endif |
432 | } |
433 | else { |
bee1dbe2 |
434 | #ifndef DOSISH |
fe14fcc3 |
435 | if (UNLINK(oldname) < 0) { |
436 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 |
437 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 |
438 | do_close(gv,FALSE); |
fe14fcc3 |
439 | continue; |
440 | } |
ff8e2863 |
441 | #else |
463ee0b2 |
442 | croak("Can't do inplace edit without backup"); |
ff8e2863 |
443 | #endif |
a687059c |
444 | } |
445 | |
79072805 |
446 | sv_setpvn(sv,">",1); |
447 | sv_catpv(sv,oldname); |
748a9306 |
448 | SETERRNO(0,0); /* in case sprintf set errno */ |
c07a80fd |
449 | if (!do_open(argvoutgv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp)) { |
c623bd54 |
450 | warn("Can't do inplace edit on %s: %s", |
2304df62 |
451 | oldname, Strerror(errno) ); |
79072805 |
452 | do_close(gv,FALSE); |
fe14fcc3 |
453 | continue; |
454 | } |
4633a7c4 |
455 | setdefout(argvoutgv); |
760ac839 |
456 | lastfd = PerlIO_fileno(IoIFP(GvIOp(argvoutgv))); |
a0d0e21e |
457 | (void)Fstat(lastfd,&statbuf); |
fe14fcc3 |
458 | #ifdef HAS_FCHMOD |
459 | (void)fchmod(lastfd,filemode); |
a687059c |
460 | #else |
461 | (void)chmod(oldname,filemode); |
462 | #endif |
fe14fcc3 |
463 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
464 | #ifdef HAS_FCHOWN |
465 | (void)fchown(lastfd,fileuid,filegid); |
a687059c |
466 | #else |
fe14fcc3 |
467 | #ifdef HAS_CHOWN |
468 | (void)chown(oldname,fileuid,filegid); |
a687059c |
469 | #endif |
b1248f16 |
470 | #endif |
fe14fcc3 |
471 | } |
a687059c |
472 | } |
a0d0e21e |
473 | return IoIFP(GvIOp(gv)); |
a687059c |
474 | } |
475 | else |
760ac839 |
476 | PerlIO_printf(PerlIO_stderr(), "Can't open %s: %s\n",SvPV(sv, na), Strerror(errno)); |
a687059c |
477 | } |
478 | if (inplace) { |
79072805 |
479 | (void)do_close(argvoutgv,FALSE); |
4633a7c4 |
480 | setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO)); |
a687059c |
481 | } |
482 | return Nullfp; |
483 | } |
484 | |
fe14fcc3 |
485 | #ifdef HAS_PIPE |
afd9f252 |
486 | void |
79072805 |
487 | do_pipe(sv, rgv, wgv) |
488 | SV *sv; |
489 | GV *rgv; |
490 | GV *wgv; |
afd9f252 |
491 | { |
79072805 |
492 | register IO *rstio; |
493 | register IO *wstio; |
afd9f252 |
494 | int fd[2]; |
495 | |
79072805 |
496 | if (!rgv) |
afd9f252 |
497 | goto badexit; |
79072805 |
498 | if (!wgv) |
afd9f252 |
499 | goto badexit; |
500 | |
a0d0e21e |
501 | rstio = GvIOn(rgv); |
502 | wstio = GvIOn(wgv); |
afd9f252 |
503 | |
a0d0e21e |
504 | if (IoIFP(rstio)) |
79072805 |
505 | do_close(rgv,FALSE); |
a0d0e21e |
506 | if (IoIFP(wstio)) |
79072805 |
507 | do_close(wgv,FALSE); |
afd9f252 |
508 | |
509 | if (pipe(fd) < 0) |
510 | goto badexit; |
760ac839 |
511 | IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"); |
512 | IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"); |
8990e307 |
513 | IoIFP(wstio) = IoOFP(wstio); |
514 | IoTYPE(rstio) = '<'; |
515 | IoTYPE(wstio) = '>'; |
516 | if (!IoIFP(rstio) || !IoOFP(wstio)) { |
760ac839 |
517 | if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio)); |
fe14fcc3 |
518 | else close(fd[0]); |
760ac839 |
519 | if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio)); |
fe14fcc3 |
520 | else close(fd[1]); |
521 | goto badexit; |
522 | } |
afd9f252 |
523 | |
79072805 |
524 | sv_setsv(sv,&sv_yes); |
afd9f252 |
525 | return; |
526 | |
527 | badexit: |
79072805 |
528 | sv_setsv(sv,&sv_undef); |
afd9f252 |
529 | return; |
530 | } |
b1248f16 |
531 | #endif |
afd9f252 |
532 | |
517844ec |
533 | /* explicit renamed to avoid C++ conflict -- kja */ |
a687059c |
534 | bool |
a0d0e21e |
535 | #ifndef CAN_PROTOTYPE |
517844ec |
536 | do_close(gv,not_implicit) |
79072805 |
537 | GV *gv; |
517844ec |
538 | bool not_implicit; |
8990e307 |
539 | #else |
517844ec |
540 | do_close(GV *gv, bool not_implicit) |
a0d0e21e |
541 | #endif /* CAN_PROTOTYPE */ |
a687059c |
542 | { |
1193dd27 |
543 | bool retval; |
544 | IO *io; |
a687059c |
545 | |
79072805 |
546 | if (!gv) |
547 | gv = argvgv; |
a0d0e21e |
548 | if (!gv || SvTYPE(gv) != SVt_PVGV) { |
748a9306 |
549 | SETERRNO(EBADF,SS$_IVCHAN); |
c2ab57d4 |
550 | return FALSE; |
99b89507 |
551 | } |
79072805 |
552 | io = GvIO(gv); |
553 | if (!io) { /* never opened */ |
517844ec |
554 | if (dowarn && not_implicit) |
79072805 |
555 | warn("Close on unopened file <%s>",GvENAME(gv)); |
a687059c |
556 | return FALSE; |
557 | } |
1193dd27 |
558 | retval = io_close(io); |
517844ec |
559 | if (not_implicit) { |
1193dd27 |
560 | IoLINES(io) = 0; |
561 | IoPAGE(io) = 0; |
562 | IoLINES_LEFT(io) = IoPAGE_LEN(io); |
563 | } |
564 | IoTYPE(io) = ' '; |
565 | return retval; |
566 | } |
567 | |
568 | bool |
569 | io_close(io) |
570 | IO* io; |
571 | { |
572 | bool retval = FALSE; |
573 | int status; |
574 | |
8990e307 |
575 | if (IoIFP(io)) { |
576 | if (IoTYPE(io) == '|') { |
577 | status = my_pclose(IoIFP(io)); |
c623bd54 |
578 | retval = (status == 0); |
748a9306 |
579 | statusvalue = FIXSTATUS(status); |
a687059c |
580 | } |
8990e307 |
581 | else if (IoTYPE(io) == '-') |
a687059c |
582 | retval = TRUE; |
583 | else { |
8990e307 |
584 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */ |
760ac839 |
585 | retval = (PerlIO_close(IoOFP(io)) != EOF); |
586 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ |
c2ab57d4 |
587 | } |
588 | else |
760ac839 |
589 | retval = (PerlIO_close(IoIFP(io)) != EOF); |
a687059c |
590 | } |
8990e307 |
591 | IoOFP(io) = IoIFP(io) = Nullfp; |
79072805 |
592 | } |
1193dd27 |
593 | |
a687059c |
594 | return retval; |
595 | } |
596 | |
597 | bool |
79072805 |
598 | do_eof(gv) |
599 | GV *gv; |
a687059c |
600 | { |
79072805 |
601 | register IO *io; |
a687059c |
602 | int ch; |
603 | |
79072805 |
604 | io = GvIO(gv); |
a687059c |
605 | |
79072805 |
606 | if (!io) |
a687059c |
607 | return TRUE; |
608 | |
8990e307 |
609 | while (IoIFP(io)) { |
a687059c |
610 | |
760ac839 |
611 | if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */ |
612 | if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */ |
613 | return FALSE; /* this is the most usual case */ |
614 | } |
a687059c |
615 | |
760ac839 |
616 | ch = PerlIO_getc(IoIFP(io)); |
a687059c |
617 | if (ch != EOF) { |
760ac839 |
618 | (void)PerlIO_ungetc(IoIFP(io),ch); |
a687059c |
619 | return FALSE; |
620 | } |
760ac839 |
621 | if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) { |
622 | if (PerlIO_get_cnt(IoIFP(io)) < -1) |
623 | PerlIO_set_cnt(IoIFP(io),-1); |
624 | } |
8990e307 |
625 | if (op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */ |
79072805 |
626 | if (!nextargv(argvgv)) /* get another fp handy */ |
a687059c |
627 | return TRUE; |
628 | } |
629 | else |
630 | return TRUE; /* normal fp, definitely end of file */ |
631 | } |
632 | return TRUE; |
633 | } |
634 | |
635 | long |
79072805 |
636 | do_tell(gv) |
637 | GV *gv; |
a687059c |
638 | { |
79072805 |
639 | register IO *io; |
a687059c |
640 | |
79072805 |
641 | if (!gv) |
a687059c |
642 | goto phooey; |
643 | |
79072805 |
644 | io = GvIO(gv); |
8990e307 |
645 | if (!io || !IoIFP(io)) |
a687059c |
646 | goto phooey; |
647 | |
bee1dbe2 |
648 | #ifdef ULTRIX_STDIO_BOTCH |
760ac839 |
649 | if (PerlIO_eof(IoIFP(io))) |
650 | (void)PerlIO_seek (IoIFP(io), 0L, 2); /* ultrix 1.2 workaround */ |
bee1dbe2 |
651 | #endif |
a687059c |
652 | |
760ac839 |
653 | return PerlIO_tell(IoIFP(io)); |
a687059c |
654 | |
655 | phooey: |
656 | if (dowarn) |
657 | warn("tell() on unopened file"); |
748a9306 |
658 | SETERRNO(EBADF,RMS$_IFI); |
a687059c |
659 | return -1L; |
660 | } |
661 | |
662 | bool |
79072805 |
663 | do_seek(gv, pos, whence) |
664 | GV *gv; |
a687059c |
665 | long pos; |
666 | int whence; |
667 | { |
79072805 |
668 | register IO *io; |
a687059c |
669 | |
79072805 |
670 | if (!gv) |
a687059c |
671 | goto nuts; |
672 | |
79072805 |
673 | io = GvIO(gv); |
8990e307 |
674 | if (!io || !IoIFP(io)) |
a687059c |
675 | goto nuts; |
676 | |
bee1dbe2 |
677 | #ifdef ULTRIX_STDIO_BOTCH |
760ac839 |
678 | if (PerlIO_eof(IoIFP(io))) |
679 | (void)PerlIO_seek (IoIFP(io), 0L, 2); /* ultrix 1.2 workaround */ |
bee1dbe2 |
680 | #endif |
a687059c |
681 | |
760ac839 |
682 | return PerlIO_seek(IoIFP(io), pos, whence) >= 0; |
a687059c |
683 | |
684 | nuts: |
685 | if (dowarn) |
686 | warn("seek() on unopened file"); |
748a9306 |
687 | SETERRNO(EBADF,RMS$_IFI); |
a687059c |
688 | return FALSE; |
689 | } |
690 | |
a0d0e21e |
691 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP) |
c2ab57d4 |
692 | /* code courtesy of William Kucharski */ |
fe14fcc3 |
693 | #define HAS_CHSIZE |
6eb13c3b |
694 | |
517844ec |
695 | I32 my_chsize(fd, length) |
79072805 |
696 | I32 fd; /* file descriptor */ |
85e6fe83 |
697 | Off_t length; /* length to set file to */ |
6eb13c3b |
698 | { |
699 | extern long lseek(); |
700 | struct flock fl; |
701 | struct stat filebuf; |
702 | |
a0d0e21e |
703 | if (Fstat(fd, &filebuf) < 0) |
6eb13c3b |
704 | return -1; |
705 | |
706 | if (filebuf.st_size < length) { |
707 | |
708 | /* extend file length */ |
709 | |
710 | if ((lseek(fd, (length - 1), 0)) < 0) |
711 | return -1; |
712 | |
713 | /* write a "0" byte */ |
714 | |
715 | if ((write(fd, "", 1)) != 1) |
716 | return -1; |
717 | } |
718 | else { |
719 | /* truncate length */ |
720 | |
721 | fl.l_whence = 0; |
722 | fl.l_len = 0; |
723 | fl.l_start = length; |
a0d0e21e |
724 | fl.l_type = F_WRLCK; /* write lock on file space */ |
6eb13c3b |
725 | |
726 | /* |
a0d0e21e |
727 | * This relies on the UNDOCUMENTED F_FREESP argument to |
6eb13c3b |
728 | * fcntl(2), which truncates the file so that it ends at the |
729 | * position indicated by fl.l_start. |
730 | * |
731 | * Will minor miracles never cease? |
732 | */ |
733 | |
a0d0e21e |
734 | if (fcntl(fd, F_FREESP, &fl) < 0) |
6eb13c3b |
735 | return -1; |
736 | |
737 | } |
738 | |
739 | return 0; |
740 | } |
a0d0e21e |
741 | #endif /* F_FREESP */ |
ff8e2863 |
742 | |
79072805 |
743 | I32 |
744 | looks_like_number(sv) |
745 | SV *sv; |
a687059c |
746 | { |
747 | register char *s; |
748 | register char *send; |
749 | |
463ee0b2 |
750 | if (!SvPOK(sv)) { |
751 | STRLEN len; |
752 | if (!SvPOKp(sv)) |
753 | return TRUE; |
754 | s = SvPV(sv, len); |
755 | send = s + len; |
756 | } |
757 | else { |
758 | s = SvPVX(sv); |
759 | send = s + SvCUR(sv); |
760 | } |
99b89507 |
761 | while (isSPACE(*s)) |
a687059c |
762 | s++; |
763 | if (s >= send) |
764 | return FALSE; |
765 | if (*s == '+' || *s == '-') |
766 | s++; |
99b89507 |
767 | while (isDIGIT(*s)) |
a687059c |
768 | s++; |
769 | if (s == send) |
770 | return TRUE; |
771 | if (*s == '.') |
772 | s++; |
463ee0b2 |
773 | else if (s == SvPVX(sv)) |
a687059c |
774 | return FALSE; |
99b89507 |
775 | while (isDIGIT(*s)) |
a687059c |
776 | s++; |
777 | if (s == send) |
778 | return TRUE; |
779 | if (*s == 'e' || *s == 'E') { |
780 | s++; |
781 | if (*s == '+' || *s == '-') |
782 | s++; |
99b89507 |
783 | while (isDIGIT(*s)) |
a687059c |
784 | s++; |
785 | } |
99b89507 |
786 | while (isSPACE(*s)) |
a687059c |
787 | s++; |
788 | if (s >= send) |
789 | return TRUE; |
790 | return FALSE; |
791 | } |
792 | |
793 | bool |
79072805 |
794 | do_print(sv,fp) |
795 | register SV *sv; |
760ac839 |
796 | PerlIO *fp; |
a687059c |
797 | { |
798 | register char *tmps; |
463ee0b2 |
799 | STRLEN len; |
a687059c |
800 | |
79072805 |
801 | /* assuming fp is checked earlier */ |
802 | if (!sv) |
803 | return TRUE; |
804 | if (ofmt) { |
8990e307 |
805 | if (SvGMAGICAL(sv)) |
79072805 |
806 | mg_get(sv); |
463ee0b2 |
807 | if (SvIOK(sv) && SvIVX(sv) != 0) { |
760ac839 |
808 | PerlIO_printf(fp, ofmt, (double)SvIVX(sv)); |
809 | return !PerlIO_error(fp); |
79072805 |
810 | } |
463ee0b2 |
811 | if ( (SvNOK(sv) && SvNVX(sv) != 0.0) |
79072805 |
812 | || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) { |
760ac839 |
813 | PerlIO_printf(fp, ofmt, SvNVX(sv)); |
814 | return !PerlIO_error(fp); |
79072805 |
815 | } |
a687059c |
816 | } |
79072805 |
817 | switch (SvTYPE(sv)) { |
818 | case SVt_NULL: |
8990e307 |
819 | if (dowarn) |
820 | warn(warn_uninit); |
ff8e2863 |
821 | return TRUE; |
79072805 |
822 | case SVt_IV: |
a0d0e21e |
823 | if (SvIOK(sv)) { |
824 | if (SvGMAGICAL(sv)) |
825 | mg_get(sv); |
760ac839 |
826 | PerlIO_printf(fp, "%ld", (long)SvIVX(sv)); |
827 | return !PerlIO_error(fp); |
a0d0e21e |
828 | } |
829 | /* FALL THROUGH */ |
79072805 |
830 | default: |
463ee0b2 |
831 | tmps = SvPV(sv, len); |
79072805 |
832 | break; |
ff8e2863 |
833 | } |
760ac839 |
834 | if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp))) |
a687059c |
835 | return FALSE; |
760ac839 |
836 | return !PerlIO_error(fp); |
a687059c |
837 | } |
838 | |
79072805 |
839 | I32 |
840 | my_stat(ARGS) |
841 | dARGS |
a687059c |
842 | { |
79072805 |
843 | dSP; |
844 | IO *io; |
748a9306 |
845 | GV* tmpgv; |
79072805 |
846 | |
a0d0e21e |
847 | if (op->op_flags & OPf_REF) { |
79072805 |
848 | EXTEND(sp,1); |
748a9306 |
849 | tmpgv = cGVOP->op_gv; |
850 | do_fstat: |
851 | io = GvIO(tmpgv); |
8990e307 |
852 | if (io && IoIFP(io)) { |
748a9306 |
853 | statgv = tmpgv; |
79072805 |
854 | sv_setpv(statname,""); |
855 | laststype = OP_STAT; |
760ac839 |
856 | return (laststatval = Fstat(PerlIO_fileno(IoIFP(io)), &statcache)); |
a687059c |
857 | } |
858 | else { |
748a9306 |
859 | if (tmpgv == defgv) |
57ebbfd0 |
860 | return laststatval; |
a687059c |
861 | if (dowarn) |
862 | warn("Stat on unopened file <%s>", |
748a9306 |
863 | GvENAME(tmpgv)); |
79072805 |
864 | statgv = Nullgv; |
865 | sv_setpv(statname,""); |
57ebbfd0 |
866 | return (laststatval = -1); |
a687059c |
867 | } |
868 | } |
869 | else { |
748a9306 |
870 | SV* sv = POPs; |
79072805 |
871 | PUTBACK; |
748a9306 |
872 | if (SvTYPE(sv) == SVt_PVGV) { |
873 | tmpgv = (GV*)sv; |
874 | goto do_fstat; |
875 | } |
876 | else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) { |
877 | tmpgv = (GV*)SvRV(sv); |
878 | goto do_fstat; |
879 | } |
880 | |
79072805 |
881 | statgv = Nullgv; |
463ee0b2 |
882 | sv_setpv(statname,SvPV(sv, na)); |
79072805 |
883 | laststype = OP_STAT; |
a0d0e21e |
884 | laststatval = Stat(SvPV(sv, na),&statcache); |
463ee0b2 |
885 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 |
886 | warn(warn_nl, "stat"); |
887 | return laststatval; |
a687059c |
888 | } |
889 | } |
890 | |
79072805 |
891 | I32 |
892 | my_lstat(ARGS) |
893 | dARGS |
c623bd54 |
894 | { |
79072805 |
895 | dSP; |
896 | SV *sv; |
a0d0e21e |
897 | if (op->op_flags & OPf_REF) { |
79072805 |
898 | EXTEND(sp,1); |
899 | if (cGVOP->op_gv == defgv) { |
900 | if (laststype != OP_LSTAT) |
463ee0b2 |
901 | croak("The stat preceding -l _ wasn't an lstat"); |
fe14fcc3 |
902 | return laststatval; |
903 | } |
463ee0b2 |
904 | croak("You can't use -l on a filehandle"); |
fe14fcc3 |
905 | } |
c623bd54 |
906 | |
79072805 |
907 | laststype = OP_LSTAT; |
908 | statgv = Nullgv; |
909 | sv = POPs; |
910 | PUTBACK; |
463ee0b2 |
911 | sv_setpv(statname,SvPV(sv, na)); |
fe14fcc3 |
912 | #ifdef HAS_LSTAT |
463ee0b2 |
913 | laststatval = lstat(SvPV(sv, na),&statcache); |
c623bd54 |
914 | #else |
a0d0e21e |
915 | laststatval = Stat(SvPV(sv, na),&statcache); |
c623bd54 |
916 | #endif |
463ee0b2 |
917 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 |
918 | warn(warn_nl, "lstat"); |
919 | return laststatval; |
c623bd54 |
920 | } |
921 | |
a687059c |
922 | bool |
79072805 |
923 | do_aexec(really,mark,sp) |
924 | SV *really; |
925 | register SV **mark; |
926 | register SV **sp; |
a687059c |
927 | { |
a687059c |
928 | register char **a; |
a687059c |
929 | char *tmps; |
930 | |
79072805 |
931 | if (sp > mark) { |
932 | New(401,Argv, sp - mark + 1, char*); |
bee1dbe2 |
933 | a = Argv; |
79072805 |
934 | while (++mark <= sp) { |
935 | if (*mark) |
463ee0b2 |
936 | *a++ = SvPVx(*mark, na); |
a687059c |
937 | else |
938 | *a++ = ""; |
939 | } |
940 | *a = Nullch; |
bee1dbe2 |
941 | if (*Argv[0] != '/') /* will execvp use PATH? */ |
79072805 |
942 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
463ee0b2 |
943 | if (really && *(tmps = SvPV(really, na))) |
bee1dbe2 |
944 | execvp(tmps,Argv); |
a687059c |
945 | else |
bee1dbe2 |
946 | execvp(Argv[0],Argv); |
a0d0e21e |
947 | if (dowarn) |
948 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); |
a687059c |
949 | } |
bee1dbe2 |
950 | do_execfree(); |
a687059c |
951 | return FALSE; |
952 | } |
953 | |
fe14fcc3 |
954 | void |
ff8e2863 |
955 | do_execfree() |
956 | { |
957 | if (Argv) { |
958 | Safefree(Argv); |
959 | Argv = Null(char **); |
960 | } |
961 | if (Cmd) { |
962 | Safefree(Cmd); |
963 | Cmd = Nullch; |
964 | } |
965 | } |
966 | |
760ac839 |
967 | #ifndef OS2 |
968 | |
a687059c |
969 | bool |
970 | do_exec(cmd) |
971 | char *cmd; |
972 | { |
973 | register char **a; |
974 | register char *s; |
a687059c |
975 | char flags[10]; |
976 | |
748a9306 |
977 | while (*cmd && isSPACE(*cmd)) |
978 | cmd++; |
979 | |
a687059c |
980 | /* save an extra exec if possible */ |
981 | |
bf38876a |
982 | #ifdef CSH |
983 | if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) { |
a687059c |
984 | strcpy(flags,"-c"); |
bf38876a |
985 | s = cmd+cshlen+3; |
a687059c |
986 | if (*s == 'f') { |
987 | s++; |
988 | strcat(flags,"f"); |
989 | } |
990 | if (*s == ' ') |
991 | s++; |
992 | if (*s++ == '\'') { |
993 | char *ncmd = s; |
994 | |
995 | while (*s) |
996 | s++; |
997 | if (s[-1] == '\n') |
998 | *--s = '\0'; |
999 | if (s[-1] == '\'') { |
1000 | *--s = '\0'; |
bf38876a |
1001 | execl(cshname,"csh", flags,ncmd,(char*)0); |
a687059c |
1002 | *s = '\''; |
1003 | return FALSE; |
1004 | } |
1005 | } |
1006 | } |
bf38876a |
1007 | #endif /* CSH */ |
a687059c |
1008 | |
1009 | /* see if there are shell metacharacters in it */ |
1010 | |
748a9306 |
1011 | if (*cmd == '.' && isSPACE(cmd[1])) |
1012 | goto doshell; |
1013 | |
1014 | if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4])) |
1015 | goto doshell; |
1016 | |
99b89507 |
1017 | for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */ |
63f2c1e1 |
1018 | if (*s == '=') |
1019 | goto doshell; |
748a9306 |
1020 | |
a687059c |
1021 | for (s = cmd; *s; s++) { |
93a17b20 |
1022 | if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c |
1023 | if (*s == '\n' && !s[1]) { |
1024 | *s = '\0'; |
1025 | break; |
1026 | } |
1027 | doshell: |
517844ec |
1028 | execl(SH_PATH, "sh", "-c", cmd, (char*)0); |
a687059c |
1029 | return FALSE; |
1030 | } |
1031 | } |
748a9306 |
1032 | |
ff8e2863 |
1033 | New(402,Argv, (s - cmd) / 2 + 2, char*); |
a0d0e21e |
1034 | Cmd = savepvn(cmd, s-cmd); |
ff8e2863 |
1035 | a = Argv; |
1036 | for (s = Cmd; *s;) { |
99b89507 |
1037 | while (*s && isSPACE(*s)) s++; |
a687059c |
1038 | if (*s) |
1039 | *(a++) = s; |
99b89507 |
1040 | while (*s && !isSPACE(*s)) s++; |
a687059c |
1041 | if (*s) |
1042 | *s++ = '\0'; |
1043 | } |
1044 | *a = Nullch; |
ff8e2863 |
1045 | if (Argv[0]) { |
1046 | execvp(Argv[0],Argv); |
b1248f16 |
1047 | if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
ff8e2863 |
1048 | do_execfree(); |
a687059c |
1049 | goto doshell; |
b1248f16 |
1050 | } |
a0d0e21e |
1051 | if (dowarn) |
1052 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); |
a687059c |
1053 | } |
ff8e2863 |
1054 | do_execfree(); |
a687059c |
1055 | return FALSE; |
1056 | } |
1057 | |
760ac839 |
1058 | #endif |
1059 | |
79072805 |
1060 | I32 |
1061 | apply(type,mark,sp) |
1062 | I32 type; |
1063 | register SV **mark; |
1064 | register SV **sp; |
a687059c |
1065 | { |
79072805 |
1066 | register I32 val; |
1067 | register I32 val2; |
1068 | register I32 tot = 0; |
a687059c |
1069 | char *s; |
79072805 |
1070 | SV **oldmark = mark; |
a687059c |
1071 | |
463ee0b2 |
1072 | if (tainting) { |
1073 | while (++mark <= sp) { |
748a9306 |
1074 | MAGIC *mg; |
1075 | if (SvMAGICAL(*mark) && (mg = mg_find(*mark, 't')) && mg->mg_len & 1) |
463ee0b2 |
1076 | tainted = TRUE; |
1077 | } |
1078 | mark = oldmark; |
1079 | } |
a687059c |
1080 | switch (type) { |
79072805 |
1081 | case OP_CHMOD: |
1082 | TAINT_PROPER("chmod"); |
1083 | if (++mark <= sp) { |
1084 | tot = sp - mark; |
463ee0b2 |
1085 | val = SvIVx(*mark); |
79072805 |
1086 | while (++mark <= sp) { |
463ee0b2 |
1087 | if (chmod(SvPVx(*mark, na),val)) |
a687059c |
1088 | tot--; |
1089 | } |
1090 | } |
1091 | break; |
fe14fcc3 |
1092 | #ifdef HAS_CHOWN |
79072805 |
1093 | case OP_CHOWN: |
1094 | TAINT_PROPER("chown"); |
1095 | if (sp - mark > 2) { |
463ee0b2 |
1096 | val = SvIVx(*++mark); |
1097 | val2 = SvIVx(*++mark); |
a0d0e21e |
1098 | tot = sp - mark; |
79072805 |
1099 | while (++mark <= sp) { |
463ee0b2 |
1100 | if (chown(SvPVx(*mark, na),val,val2)) |
a687059c |
1101 | tot--; |
1102 | } |
1103 | } |
1104 | break; |
b1248f16 |
1105 | #endif |
fe14fcc3 |
1106 | #ifdef HAS_KILL |
79072805 |
1107 | case OP_KILL: |
1108 | TAINT_PROPER("kill"); |
463ee0b2 |
1109 | s = SvPVx(*++mark, na); |
79072805 |
1110 | tot = sp - mark; |
1111 | if (isUPPER(*s)) { |
1112 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') |
1113 | s += 3; |
1114 | if (!(val = whichsig(s))) |
463ee0b2 |
1115 | croak("Unrecognized signal name \"%s\"",s); |
79072805 |
1116 | } |
1117 | else |
463ee0b2 |
1118 | val = SvIVx(*mark); |
3595fcef |
1119 | #ifdef VMS |
1120 | /* kill() doesn't do process groups (job trees?) under VMS */ |
1121 | if (val < 0) val = -val; |
1122 | if (val == SIGKILL) { |
1123 | # include <starlet.h> |
1124 | /* Use native sys$delprc() to insure that target process is |
1125 | * deleted; supervisor-mode images don't pay attention to |
1126 | * CRTL's emulation of Unix-style signals and kill() |
1127 | */ |
1128 | while (++mark <= sp) { |
1129 | I32 proc = SvIVx(*mark); |
1130 | register unsigned long int __vmssts; |
1131 | if (!((__vmssts = sys$delprc(&proc,0)) & 1)) { |
1132 | tot--; |
1133 | switch (__vmssts) { |
1134 | case SS$_NONEXPR: |
1135 | case SS$_NOSUCHNODE: |
1136 | SETERRNO(ESRCH,__vmssts); |
1137 | break; |
1138 | case SS$_NOPRIV: |
1139 | SETERRNO(EPERM,__vmssts); |
1140 | break; |
1141 | default: |
1142 | SETERRNO(EVMSERR,__vmssts); |
1143 | } |
1144 | } |
1145 | } |
1146 | break; |
1147 | } |
1148 | #endif |
79072805 |
1149 | if (val < 0) { |
1150 | val = -val; |
1151 | while (++mark <= sp) { |
463ee0b2 |
1152 | I32 proc = SvIVx(*mark); |
fe14fcc3 |
1153 | #ifdef HAS_KILLPG |
79072805 |
1154 | if (killpg(proc,val)) /* BSD */ |
a687059c |
1155 | #else |
79072805 |
1156 | if (kill(-proc,val)) /* SYSV */ |
a687059c |
1157 | #endif |
79072805 |
1158 | tot--; |
a687059c |
1159 | } |
79072805 |
1160 | } |
1161 | else { |
1162 | while (++mark <= sp) { |
463ee0b2 |
1163 | if (kill(SvIVx(*mark),val)) |
79072805 |
1164 | tot--; |
a687059c |
1165 | } |
1166 | } |
1167 | break; |
b1248f16 |
1168 | #endif |
79072805 |
1169 | case OP_UNLINK: |
1170 | TAINT_PROPER("unlink"); |
1171 | tot = sp - mark; |
1172 | while (++mark <= sp) { |
463ee0b2 |
1173 | s = SvPVx(*mark, na); |
a687059c |
1174 | if (euid || unsafe) { |
1175 | if (UNLINK(s)) |
1176 | tot--; |
1177 | } |
1178 | else { /* don't let root wipe out directories without -U */ |
fe14fcc3 |
1179 | #ifdef HAS_LSTAT |
c623bd54 |
1180 | if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c |
1181 | #else |
a0d0e21e |
1182 | if (Stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c |
1183 | #endif |
a687059c |
1184 | tot--; |
1185 | else { |
1186 | if (UNLINK(s)) |
1187 | tot--; |
1188 | } |
1189 | } |
1190 | } |
1191 | break; |
a0d0e21e |
1192 | #ifdef HAS_UTIME |
79072805 |
1193 | case OP_UTIME: |
1194 | TAINT_PROPER("utime"); |
1195 | if (sp - mark > 2) { |
748a9306 |
1196 | #if defined(I_UTIME) || defined(VMS) |
663a0e37 |
1197 | struct utimbuf utbuf; |
1198 | #else |
a687059c |
1199 | struct { |
663a0e37 |
1200 | long actime; |
1201 | long modtime; |
a687059c |
1202 | } utbuf; |
663a0e37 |
1203 | #endif |
a687059c |
1204 | |
afd9f252 |
1205 | Zero(&utbuf, sizeof utbuf, char); |
517844ec |
1206 | #ifdef BIG_TIME |
1207 | utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */ |
1208 | utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */ |
1209 | #else |
463ee0b2 |
1210 | utbuf.actime = SvIVx(*++mark); /* time accessed */ |
1211 | utbuf.modtime = SvIVx(*++mark); /* time modified */ |
517844ec |
1212 | #endif |
79072805 |
1213 | tot = sp - mark; |
1214 | while (++mark <= sp) { |
463ee0b2 |
1215 | if (utime(SvPVx(*mark, na),&utbuf)) |
a687059c |
1216 | tot--; |
1217 | } |
a687059c |
1218 | } |
1219 | else |
79072805 |
1220 | tot = 0; |
a687059c |
1221 | break; |
a0d0e21e |
1222 | #endif |
a687059c |
1223 | } |
1224 | return tot; |
1225 | } |
1226 | |
1227 | /* Do the permissions allow some operation? Assumes statcache already set. */ |
a0d0e21e |
1228 | #ifndef VMS /* VMS' cando is in vms.c */ |
79072805 |
1229 | I32 |
a687059c |
1230 | cando(bit, effective, statbufp) |
79072805 |
1231 | I32 bit; |
1232 | I32 effective; |
a687059c |
1233 | register struct stat *statbufp; |
1234 | { |
bee1dbe2 |
1235 | #ifdef DOSISH |
fe14fcc3 |
1236 | /* [Comments and code from Len Reed] |
1237 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write |
1238 | * to write-protected files. The execute permission bit is set |
1239 | * by the Miscrosoft C library stat() function for the following: |
1240 | * .exe files |
1241 | * .com files |
1242 | * .bat files |
1243 | * directories |
1244 | * All files and directories are readable. |
1245 | * Directories and special files, e.g. "CON", cannot be |
1246 | * write-protected. |
1247 | * [Comment by Tom Dinger -- a directory can have the write-protect |
1248 | * bit set in the file system, but DOS permits changes to |
1249 | * the directory anyway. In addition, all bets are off |
1250 | * here for networked software, such as Novell and |
1251 | * Sun's PC-NFS.] |
1252 | */ |
1253 | |
bee1dbe2 |
1254 | /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat |
1255 | * too so it will actually look into the files for magic numbers |
1256 | */ |
fe14fcc3 |
1257 | return (bit & statbufp->st_mode) ? TRUE : FALSE; |
1258 | |
1259 | #else /* ! MSDOS */ |
a687059c |
1260 | if ((effective ? euid : uid) == 0) { /* root is special */ |
c623bd54 |
1261 | if (bit == S_IXUSR) { |
1262 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) |
a687059c |
1263 | return TRUE; |
1264 | } |
1265 | else |
1266 | return TRUE; /* root reads and writes anything */ |
1267 | return FALSE; |
1268 | } |
1269 | if (statbufp->st_uid == (effective ? euid : uid) ) { |
1270 | if (statbufp->st_mode & bit) |
1271 | return TRUE; /* ok as "user" */ |
1272 | } |
79072805 |
1273 | else if (ingroup((I32)statbufp->st_gid,effective)) { |
a687059c |
1274 | if (statbufp->st_mode & bit >> 3) |
1275 | return TRUE; /* ok as "group" */ |
1276 | } |
1277 | else if (statbufp->st_mode & bit >> 6) |
1278 | return TRUE; /* ok as "other" */ |
1279 | return FALSE; |
fe14fcc3 |
1280 | #endif /* ! MSDOS */ |
a687059c |
1281 | } |
a0d0e21e |
1282 | #endif /* ! VMS */ |
a687059c |
1283 | |
79072805 |
1284 | I32 |
a687059c |
1285 | ingroup(testgid,effective) |
79072805 |
1286 | I32 testgid; |
1287 | I32 effective; |
a687059c |
1288 | { |
1289 | if (testgid == (effective ? egid : gid)) |
1290 | return TRUE; |
fe14fcc3 |
1291 | #ifdef HAS_GETGROUPS |
a687059c |
1292 | #ifndef NGROUPS |
1293 | #define NGROUPS 32 |
1294 | #endif |
1295 | { |
a0d0e21e |
1296 | Groups_t gary[NGROUPS]; |
79072805 |
1297 | I32 anum; |
a687059c |
1298 | |
1299 | anum = getgroups(NGROUPS,gary); |
1300 | while (--anum >= 0) |
1301 | if (gary[anum] == testgid) |
1302 | return TRUE; |
1303 | } |
1304 | #endif |
1305 | return FALSE; |
1306 | } |
c2ab57d4 |
1307 | |
fe14fcc3 |
1308 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 |
1309 | |
79072805 |
1310 | I32 |
1311 | do_ipcget(optype, mark, sp) |
1312 | I32 optype; |
1313 | SV **mark; |
1314 | SV **sp; |
c2ab57d4 |
1315 | { |
c2ab57d4 |
1316 | key_t key; |
79072805 |
1317 | I32 n, flags; |
c2ab57d4 |
1318 | |
463ee0b2 |
1319 | key = (key_t)SvNVx(*++mark); |
1320 | n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark); |
1321 | flags = SvIVx(*++mark); |
748a9306 |
1322 | SETERRNO(0,0); |
c2ab57d4 |
1323 | switch (optype) |
1324 | { |
fe14fcc3 |
1325 | #ifdef HAS_MSG |
79072805 |
1326 | case OP_MSGGET: |
c2ab57d4 |
1327 | return msgget(key, flags); |
e5d73d77 |
1328 | #endif |
fe14fcc3 |
1329 | #ifdef HAS_SEM |
79072805 |
1330 | case OP_SEMGET: |
c2ab57d4 |
1331 | return semget(key, n, flags); |
e5d73d77 |
1332 | #endif |
fe14fcc3 |
1333 | #ifdef HAS_SHM |
79072805 |
1334 | case OP_SHMGET: |
c2ab57d4 |
1335 | return shmget(key, n, flags); |
e5d73d77 |
1336 | #endif |
fe14fcc3 |
1337 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
1338 | default: |
c07a80fd |
1339 | croak("%s not implemented", op_desc[optype]); |
e5d73d77 |
1340 | #endif |
c2ab57d4 |
1341 | } |
1342 | return -1; /* should never happen */ |
1343 | } |
1344 | |
79072805 |
1345 | I32 |
1346 | do_ipcctl(optype, mark, sp) |
1347 | I32 optype; |
1348 | SV **mark; |
1349 | SV **sp; |
c2ab57d4 |
1350 | { |
79072805 |
1351 | SV *astr; |
c2ab57d4 |
1352 | char *a; |
a0d0e21e |
1353 | I32 id, n, cmd, infosize, getinfo; |
1354 | I32 ret = -1; |
c2ab57d4 |
1355 | |
463ee0b2 |
1356 | id = SvIVx(*++mark); |
1357 | n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0; |
1358 | cmd = SvIVx(*++mark); |
79072805 |
1359 | astr = *++mark; |
c2ab57d4 |
1360 | infosize = 0; |
1361 | getinfo = (cmd == IPC_STAT); |
1362 | |
1363 | switch (optype) |
1364 | { |
fe14fcc3 |
1365 | #ifdef HAS_MSG |
79072805 |
1366 | case OP_MSGCTL: |
c2ab57d4 |
1367 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1368 | infosize = sizeof(struct msqid_ds); |
1369 | break; |
e5d73d77 |
1370 | #endif |
fe14fcc3 |
1371 | #ifdef HAS_SHM |
79072805 |
1372 | case OP_SHMCTL: |
c2ab57d4 |
1373 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1374 | infosize = sizeof(struct shmid_ds); |
1375 | break; |
e5d73d77 |
1376 | #endif |
fe14fcc3 |
1377 | #ifdef HAS_SEM |
79072805 |
1378 | case OP_SEMCTL: |
c2ab57d4 |
1379 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1380 | infosize = sizeof(struct semid_ds); |
1381 | else if (cmd == GETALL || cmd == SETALL) |
1382 | { |
1383 | struct semid_ds semds; |
1384 | if (semctl(id, 0, IPC_STAT, &semds) == -1) |
1385 | return -1; |
1386 | getinfo = (cmd == GETALL); |
6e21c824 |
1387 | infosize = semds.sem_nsems * sizeof(short); |
1388 | /* "short" is technically wrong but much more portable |
1389 | than guessing about u_?short(_t)? */ |
c2ab57d4 |
1390 | } |
1391 | break; |
e5d73d77 |
1392 | #endif |
fe14fcc3 |
1393 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
1394 | default: |
c07a80fd |
1395 | croak("%s not implemented", op_desc[optype]); |
e5d73d77 |
1396 | #endif |
c2ab57d4 |
1397 | } |
1398 | |
1399 | if (infosize) |
1400 | { |
a0d0e21e |
1401 | STRLEN len; |
c2ab57d4 |
1402 | if (getinfo) |
1403 | { |
a0d0e21e |
1404 | SvPV_force(astr, len); |
1405 | a = SvGROW(astr, infosize+1); |
c2ab57d4 |
1406 | } |
1407 | else |
1408 | { |
463ee0b2 |
1409 | a = SvPV(astr, len); |
1410 | if (len != infosize) |
1411 | croak("Bad arg length for %s, is %d, should be %d", |
c07a80fd |
1412 | op_desc[optype], len, infosize); |
c2ab57d4 |
1413 | } |
1414 | } |
1415 | else |
1416 | { |
463ee0b2 |
1417 | I32 i = SvIV(astr); |
c2ab57d4 |
1418 | a = (char *)i; /* ouch */ |
1419 | } |
748a9306 |
1420 | SETERRNO(0,0); |
c2ab57d4 |
1421 | switch (optype) |
1422 | { |
fe14fcc3 |
1423 | #ifdef HAS_MSG |
79072805 |
1424 | case OP_MSGCTL: |
bee1dbe2 |
1425 | ret = msgctl(id, cmd, (struct msqid_ds *)a); |
c2ab57d4 |
1426 | break; |
e5d73d77 |
1427 | #endif |
fe14fcc3 |
1428 | #ifdef HAS_SEM |
79072805 |
1429 | case OP_SEMCTL: |
1430 | ret = semctl(id, n, cmd, (struct semid_ds *)a); |
c2ab57d4 |
1431 | break; |
e5d73d77 |
1432 | #endif |
fe14fcc3 |
1433 | #ifdef HAS_SHM |
79072805 |
1434 | case OP_SHMCTL: |
bee1dbe2 |
1435 | ret = shmctl(id, cmd, (struct shmid_ds *)a); |
c2ab57d4 |
1436 | break; |
e5d73d77 |
1437 | #endif |
c2ab57d4 |
1438 | } |
1439 | if (getinfo && ret >= 0) { |
79072805 |
1440 | SvCUR_set(astr, infosize); |
1441 | *SvEND(astr) = '\0'; |
a0d0e21e |
1442 | SvSETMAGIC(astr); |
c2ab57d4 |
1443 | } |
1444 | return ret; |
1445 | } |
1446 | |
79072805 |
1447 | I32 |
1448 | do_msgsnd(mark, sp) |
1449 | SV **mark; |
1450 | SV **sp; |
c2ab57d4 |
1451 | { |
fe14fcc3 |
1452 | #ifdef HAS_MSG |
79072805 |
1453 | SV *mstr; |
c2ab57d4 |
1454 | char *mbuf; |
79072805 |
1455 | I32 id, msize, flags; |
463ee0b2 |
1456 | STRLEN len; |
c2ab57d4 |
1457 | |
463ee0b2 |
1458 | id = SvIVx(*++mark); |
79072805 |
1459 | mstr = *++mark; |
463ee0b2 |
1460 | flags = SvIVx(*++mark); |
1461 | mbuf = SvPV(mstr, len); |
1462 | if ((msize = len - sizeof(long)) < 0) |
1463 | croak("Arg too short for msgsnd"); |
748a9306 |
1464 | SETERRNO(0,0); |
bee1dbe2 |
1465 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); |
e5d73d77 |
1466 | #else |
463ee0b2 |
1467 | croak("msgsnd not implemented"); |
e5d73d77 |
1468 | #endif |
c2ab57d4 |
1469 | } |
1470 | |
79072805 |
1471 | I32 |
1472 | do_msgrcv(mark, sp) |
1473 | SV **mark; |
1474 | SV **sp; |
c2ab57d4 |
1475 | { |
fe14fcc3 |
1476 | #ifdef HAS_MSG |
79072805 |
1477 | SV *mstr; |
c2ab57d4 |
1478 | char *mbuf; |
1479 | long mtype; |
79072805 |
1480 | I32 id, msize, flags, ret; |
463ee0b2 |
1481 | STRLEN len; |
79072805 |
1482 | |
463ee0b2 |
1483 | id = SvIVx(*++mark); |
79072805 |
1484 | mstr = *++mark; |
463ee0b2 |
1485 | msize = SvIVx(*++mark); |
1486 | mtype = (long)SvIVx(*++mark); |
1487 | flags = SvIVx(*++mark); |
ed6116ce |
1488 | if (SvTHINKFIRST(mstr)) { |
1489 | if (SvREADONLY(mstr)) |
1490 | croak("Can't msgrcv to readonly var"); |
1491 | if (SvROK(mstr)) |
1492 | sv_unref(mstr); |
1493 | } |
a0d0e21e |
1494 | SvPV_force(mstr, len); |
1495 | mbuf = SvGROW(mstr, sizeof(long)+msize+1); |
1496 | |
748a9306 |
1497 | SETERRNO(0,0); |
bee1dbe2 |
1498 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); |
c2ab57d4 |
1499 | if (ret >= 0) { |
79072805 |
1500 | SvCUR_set(mstr, sizeof(long)+ret); |
1501 | *SvEND(mstr) = '\0'; |
c2ab57d4 |
1502 | } |
1503 | return ret; |
e5d73d77 |
1504 | #else |
463ee0b2 |
1505 | croak("msgrcv not implemented"); |
e5d73d77 |
1506 | #endif |
c2ab57d4 |
1507 | } |
1508 | |
79072805 |
1509 | I32 |
1510 | do_semop(mark, sp) |
1511 | SV **mark; |
1512 | SV **sp; |
c2ab57d4 |
1513 | { |
fe14fcc3 |
1514 | #ifdef HAS_SEM |
79072805 |
1515 | SV *opstr; |
c2ab57d4 |
1516 | char *opbuf; |
463ee0b2 |
1517 | I32 id; |
1518 | STRLEN opsize; |
c2ab57d4 |
1519 | |
463ee0b2 |
1520 | id = SvIVx(*++mark); |
79072805 |
1521 | opstr = *++mark; |
463ee0b2 |
1522 | opbuf = SvPV(opstr, opsize); |
c2ab57d4 |
1523 | if (opsize < sizeof(struct sembuf) |
1524 | || (opsize % sizeof(struct sembuf)) != 0) { |
748a9306 |
1525 | SETERRNO(EINVAL,LIB$_INVARG); |
c2ab57d4 |
1526 | return -1; |
1527 | } |
748a9306 |
1528 | SETERRNO(0,0); |
6e21c824 |
1529 | return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf)); |
e5d73d77 |
1530 | #else |
463ee0b2 |
1531 | croak("semop not implemented"); |
e5d73d77 |
1532 | #endif |
c2ab57d4 |
1533 | } |
1534 | |
79072805 |
1535 | I32 |
1536 | do_shmio(optype, mark, sp) |
1537 | I32 optype; |
1538 | SV **mark; |
1539 | SV **sp; |
c2ab57d4 |
1540 | { |
fe14fcc3 |
1541 | #ifdef HAS_SHM |
79072805 |
1542 | SV *mstr; |
c2ab57d4 |
1543 | char *mbuf, *shm; |
79072805 |
1544 | I32 id, mpos, msize; |
463ee0b2 |
1545 | STRLEN len; |
c2ab57d4 |
1546 | struct shmid_ds shmds; |
c2ab57d4 |
1547 | |
463ee0b2 |
1548 | id = SvIVx(*++mark); |
79072805 |
1549 | mstr = *++mark; |
463ee0b2 |
1550 | mpos = SvIVx(*++mark); |
1551 | msize = SvIVx(*++mark); |
748a9306 |
1552 | SETERRNO(0,0); |
c2ab57d4 |
1553 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
1554 | return -1; |
1555 | if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) { |
748a9306 |
1556 | SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */ |
c2ab57d4 |
1557 | return -1; |
1558 | } |
a0d0e21e |
1559 | shm = (Shmat_t)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0); |
c2ab57d4 |
1560 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
1561 | return -1; |
79072805 |
1562 | if (optype == OP_SHMREAD) { |
a0d0e21e |
1563 | SvPV_force(mstr, len); |
1564 | mbuf = SvGROW(mstr, msize+1); |
1565 | |
bee1dbe2 |
1566 | Copy(shm + mpos, mbuf, msize, char); |
79072805 |
1567 | SvCUR_set(mstr, msize); |
1568 | *SvEND(mstr) = '\0'; |
a0d0e21e |
1569 | SvSETMAGIC(mstr); |
c2ab57d4 |
1570 | } |
1571 | else { |
79072805 |
1572 | I32 n; |
c2ab57d4 |
1573 | |
a0d0e21e |
1574 | mbuf = SvPV(mstr, len); |
463ee0b2 |
1575 | if ((n = len) > msize) |
c2ab57d4 |
1576 | n = msize; |
bee1dbe2 |
1577 | Copy(mbuf, shm + mpos, n, char); |
c2ab57d4 |
1578 | if (n < msize) |
bee1dbe2 |
1579 | memzero(shm + mpos + n, msize - n); |
c2ab57d4 |
1580 | } |
1581 | return shmdt(shm); |
e5d73d77 |
1582 | #else |
463ee0b2 |
1583 | croak("shm I/O not implemented"); |
e5d73d77 |
1584 | #endif |
c2ab57d4 |
1585 | } |
1586 | |
fe14fcc3 |
1587 | #endif /* SYSV IPC */ |