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 | |
a0d0e21e |
46 | /* Omit -- it causes too much grief on mixed systems. |
47 | #ifdef I_UNISTD |
48 | #include <unistd.h> |
49 | #endif |
50 | */ |
51 | |
a687059c |
52 | bool |
a0d0e21e |
53 | do_open(gv,name,len,supplied_fp) |
79072805 |
54 | GV *gv; |
a687059c |
55 | register char *name; |
79072805 |
56 | I32 len; |
a0d0e21e |
57 | FILE *supplied_fp; |
a687059c |
58 | { |
59 | FILE *fp; |
a0d0e21e |
60 | register IO *io = GvIOn(gv); |
61 | char *myname = savepv(name); |
a687059c |
62 | int result; |
63 | int fd; |
64 | int writing = 0; |
a0d0e21e |
65 | int dodup; |
a687059c |
66 | char mode[3]; /* stdio file mode ("r\0" or "r+\0") */ |
6e21c824 |
67 | FILE *saveifp = Nullfp; |
68 | FILE *saveofp = Nullfp; |
69 | char savetype = ' '; |
a687059c |
70 | |
8990e307 |
71 | SAVEFREEPV(myname); |
bee1dbe2 |
72 | mode[0] = mode[1] = mode[2] = '\0'; |
a687059c |
73 | name = myname; |
74 | forkprocess = 1; /* assume true if no fork */ |
99b89507 |
75 | while (len && isSPACE(name[len-1])) |
a687059c |
76 | name[--len] = '\0'; |
a0d0e21e |
77 | if (IoIFP(io)) { |
8990e307 |
78 | fd = fileno(IoIFP(io)); |
79 | if (IoTYPE(io) == '-') |
c2ab57d4 |
80 | result = 0; |
6e21c824 |
81 | else if (fd <= maxsysfd) { |
8990e307 |
82 | saveifp = IoIFP(io); |
83 | saveofp = IoOFP(io); |
84 | savetype = IoTYPE(io); |
6e21c824 |
85 | result = 0; |
86 | } |
8990e307 |
87 | else if (IoTYPE(io) == '|') |
88 | result = my_pclose(IoIFP(io)); |
89 | else if (IoIFP(io) != IoOFP(io)) { |
90 | if (IoOFP(io)) { |
91 | result = fclose(IoOFP(io)); |
92 | fclose(IoIFP(io)); /* clear stdio, fd already closed */ |
c2ab57d4 |
93 | } |
94 | else |
8990e307 |
95 | result = fclose(IoIFP(io)); |
a687059c |
96 | } |
a687059c |
97 | else |
8990e307 |
98 | result = fclose(IoIFP(io)); |
6e21c824 |
99 | if (result == EOF && fd > maxsysfd) |
a687059c |
100 | fprintf(stderr,"Warning: unable to close filehandle %s properly.\n", |
79072805 |
101 | GvENAME(gv)); |
8990e307 |
102 | IoOFP(io) = IoIFP(io) = Nullfp; |
a687059c |
103 | } |
104 | if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */ |
105 | mode[1] = *name++; |
106 | mode[2] = '\0'; |
107 | --len; |
108 | writing = 1; |
109 | } |
110 | else { |
111 | mode[1] = '\0'; |
112 | } |
8990e307 |
113 | IoTYPE(io) = *name; |
a687059c |
114 | if (*name == '|') { |
99b89507 |
115 | /*SUPPRESS 530*/ |
116 | for (name++; isSPACE(*name); name++) ; |
79072805 |
117 | if (strNE(name,"-")) |
118 | TAINT_ENV(); |
119 | TAINT_PROPER("piped open"); |
a0d0e21e |
120 | if (dowarn && name[strlen(name)-1] == '|') |
121 | warn("Can't do bidirectional pipe"); |
79072805 |
122 | fp = my_popen(name,"w"); |
a687059c |
123 | writing = 1; |
124 | } |
a687059c |
125 | else if (*name == '>') { |
79072805 |
126 | TAINT_PROPER("open"); |
bf38876a |
127 | name++; |
128 | if (*name == '>') { |
8990e307 |
129 | mode[0] = IoTYPE(io) = 'a'; |
bf38876a |
130 | name++; |
a687059c |
131 | } |
bf38876a |
132 | else |
a687059c |
133 | mode[0] = 'w'; |
a687059c |
134 | writing = 1; |
bf38876a |
135 | if (*name == '&') { |
136 | duplicity: |
a0d0e21e |
137 | dodup = 1; |
bf38876a |
138 | name++; |
a0d0e21e |
139 | if (*name == '=') { |
140 | dodup = 0; |
bf38876a |
141 | name++; |
a0d0e21e |
142 | } |
143 | if (!*name && supplied_fp) |
144 | fp = supplied_fp; |
bf38876a |
145 | else { |
a0d0e21e |
146 | while (isSPACE(*name)) |
147 | name++; |
148 | if (isDIGIT(*name)) |
149 | fd = atoi(name); |
150 | else { |
151 | IO* thatio; |
152 | gv = gv_fetchpv(name,FALSE,SVt_PVIO); |
153 | thatio = GvIO(gv); |
154 | if (!thatio) { |
6e21c824 |
155 | #ifdef EINVAL |
a0d0e21e |
156 | errno = EINVAL; |
6e21c824 |
157 | #endif |
a0d0e21e |
158 | goto say_false; |
159 | } |
160 | if (IoIFP(thatio)) { |
161 | fd = fileno(IoIFP(thatio)); |
162 | if (IoTYPE(thatio) == 's') |
163 | IoTYPE(io) = 's'; |
164 | } |
165 | else |
166 | fd = -1; |
bf38876a |
167 | } |
a0d0e21e |
168 | if (dodup) |
169 | fd = dup(fd); |
170 | if (!(fp = fdopen(fd,mode))) |
171 | close(fd); |
fe14fcc3 |
172 | } |
bf38876a |
173 | } |
174 | else { |
99b89507 |
175 | while (isSPACE(*name)) |
bf38876a |
176 | name++; |
177 | if (strEQ(name,"-")) { |
178 | fp = stdout; |
8990e307 |
179 | IoTYPE(io) = '-'; |
bf38876a |
180 | } |
181 | else { |
182 | fp = fopen(name,mode); |
183 | } |
184 | } |
a687059c |
185 | } |
186 | else { |
187 | if (*name == '<') { |
bf38876a |
188 | mode[0] = 'r'; |
189 | name++; |
99b89507 |
190 | while (isSPACE(*name)) |
bf38876a |
191 | name++; |
192 | if (*name == '&') |
193 | goto duplicity; |
a687059c |
194 | if (strEQ(name,"-")) { |
195 | fp = stdin; |
8990e307 |
196 | IoTYPE(io) = '-'; |
a687059c |
197 | } |
bf38876a |
198 | else |
a687059c |
199 | fp = fopen(name,mode); |
a687059c |
200 | } |
201 | else if (name[len-1] == '|') { |
a687059c |
202 | name[--len] = '\0'; |
99b89507 |
203 | while (len && isSPACE(name[len-1])) |
a687059c |
204 | name[--len] = '\0'; |
99b89507 |
205 | /*SUPPRESS 530*/ |
206 | for (; isSPACE(*name); name++) ; |
79072805 |
207 | if (strNE(name,"-")) |
208 | TAINT_ENV(); |
209 | TAINT_PROPER("piped open"); |
210 | fp = my_popen(name,"r"); |
8990e307 |
211 | IoTYPE(io) = '|'; |
a687059c |
212 | } |
213 | else { |
8990e307 |
214 | IoTYPE(io) = '<'; |
99b89507 |
215 | /*SUPPRESS 530*/ |
216 | for (; isSPACE(*name); name++) ; |
a687059c |
217 | if (strEQ(name,"-")) { |
218 | fp = stdin; |
8990e307 |
219 | IoTYPE(io) = '-'; |
a687059c |
220 | } |
221 | else |
222 | fp = fopen(name,"r"); |
223 | } |
224 | } |
bee1dbe2 |
225 | if (!fp) { |
8990e307 |
226 | if (dowarn && IoTYPE(io) == '<' && strchr(name, '\n')) |
bee1dbe2 |
227 | warn(warn_nl, "open"); |
6e21c824 |
228 | goto say_false; |
bee1dbe2 |
229 | } |
8990e307 |
230 | if (IoTYPE(io) && |
231 | IoTYPE(io) != '|' && IoTYPE(io) != '-') { |
a0d0e21e |
232 | if (Fstat(fileno(fp),&statbuf) < 0) { |
a687059c |
233 | (void)fclose(fp); |
6e21c824 |
234 | goto say_false; |
a687059c |
235 | } |
1462b684 |
236 | if (S_ISSOCK(statbuf.st_mode)) |
8990e307 |
237 | IoTYPE(io) = 's'; /* in case a socket was passed in to us */ |
99b89507 |
238 | #ifdef HAS_SOCKET |
239 | else if ( |
c623bd54 |
240 | #ifdef S_IFMT |
99b89507 |
241 | !(statbuf.st_mode & S_IFMT) |
242 | #else |
243 | !statbuf.st_mode |
244 | #endif |
245 | ) { |
a0d0e21e |
246 | int buflen = sizeof tokenbuf; |
247 | if (getsockname(fileno(fp), (struct sockaddr *)tokenbuf, &buflen) >= 0 |
bee1dbe2 |
248 | || errno != ENOTSOCK) |
8990e307 |
249 | IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */ |
99b89507 |
250 | /* but some return 0 for streams too, sigh */ |
251 | } |
bf38876a |
252 | #endif |
a687059c |
253 | } |
6e21c824 |
254 | if (saveifp) { /* must use old fp? */ |
255 | fd = fileno(saveifp); |
256 | if (saveofp) { |
257 | fflush(saveofp); /* emulate fclose() */ |
258 | if (saveofp != saveifp) { /* was a socket? */ |
259 | fclose(saveofp); |
99b89507 |
260 | if (fd > 2) |
261 | Safefree(saveofp); |
6e21c824 |
262 | } |
263 | } |
264 | if (fd != fileno(fp)) { |
bee1dbe2 |
265 | int pid; |
79072805 |
266 | SV *sv; |
bee1dbe2 |
267 | |
6e21c824 |
268 | dup2(fileno(fp), fd); |
79072805 |
269 | sv = *av_fetch(fdpid,fileno(fp),TRUE); |
a0d0e21e |
270 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 |
271 | pid = SvIVX(sv); |
272 | SvIVX(sv) = 0; |
79072805 |
273 | sv = *av_fetch(fdpid,fd,TRUE); |
a0d0e21e |
274 | (void)SvUPGRADE(sv, SVt_IV); |
463ee0b2 |
275 | SvIVX(sv) = pid; |
6e21c824 |
276 | fclose(fp); |
bee1dbe2 |
277 | |
6e21c824 |
278 | } |
279 | fp = saveifp; |
bee1dbe2 |
280 | clearerr(fp); |
6e21c824 |
281 | } |
a0d0e21e |
282 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
1462b684 |
283 | fd = fileno(fp); |
a0d0e21e |
284 | fcntl(fd,F_SETFD,fd > maxsysfd); |
1462b684 |
285 | #endif |
8990e307 |
286 | IoIFP(io) = fp; |
bf38876a |
287 | if (writing) { |
8990e307 |
288 | if (IoTYPE(io) == 's' |
289 | || (IoTYPE(io) == '>' && S_ISCHR(statbuf.st_mode)) ) { |
290 | if (!(IoOFP(io) = fdopen(fileno(fp),"w"))) { |
fe14fcc3 |
291 | fclose(fp); |
8990e307 |
292 | IoIFP(io) = Nullfp; |
6e21c824 |
293 | goto say_false; |
fe14fcc3 |
294 | } |
1462b684 |
295 | } |
296 | else |
8990e307 |
297 | IoOFP(io) = fp; |
bf38876a |
298 | } |
a687059c |
299 | return TRUE; |
6e21c824 |
300 | |
301 | say_false: |
8990e307 |
302 | IoIFP(io) = saveifp; |
303 | IoOFP(io) = saveofp; |
304 | IoTYPE(io) = savetype; |
6e21c824 |
305 | return FALSE; |
a687059c |
306 | } |
307 | |
308 | FILE * |
79072805 |
309 | nextargv(gv) |
310 | register GV *gv; |
a687059c |
311 | { |
79072805 |
312 | register SV *sv; |
99b89507 |
313 | #ifndef FLEXFILENAMES |
c623bd54 |
314 | int filedev; |
315 | int fileino; |
99b89507 |
316 | #endif |
c623bd54 |
317 | int fileuid; |
318 | int filegid; |
fe14fcc3 |
319 | |
79072805 |
320 | if (!argvoutgv) |
85e6fe83 |
321 | argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO); |
fe14fcc3 |
322 | if (filemode & (S_ISUID|S_ISGID)) { |
a0d0e21e |
323 | fflush(IoIFP(GvIOn(argvoutgv))); /* chmod must follow last write */ |
fe14fcc3 |
324 | #ifdef HAS_FCHMOD |
325 | (void)fchmod(lastfd,filemode); |
326 | #else |
327 | (void)chmod(oldname,filemode); |
328 | #endif |
329 | } |
330 | filemode = 0; |
79072805 |
331 | while (av_len(GvAV(gv)) >= 0) { |
463ee0b2 |
332 | STRLEN len; |
79072805 |
333 | sv = av_shift(GvAV(gv)); |
8990e307 |
334 | SAVEFREESV(sv); |
79072805 |
335 | sv_setsv(GvSV(gv),sv); |
336 | SvSETMAGIC(GvSV(gv)); |
463ee0b2 |
337 | oldname = SvPVx(GvSV(gv), len); |
a0d0e21e |
338 | if (do_open(gv,oldname,len,Nullfp)) { |
a687059c |
339 | if (inplace) { |
79072805 |
340 | TAINT_PROPER("inplace open"); |
c623bd54 |
341 | if (strEQ(oldname,"-")) { |
85e6fe83 |
342 | defoutgv = gv_fetchpv("STDOUT",TRUE,SVt_PVIO); |
a0d0e21e |
343 | return IoIFP(GvIOp(gv)); |
c623bd54 |
344 | } |
99b89507 |
345 | #ifndef FLEXFILENAMES |
c623bd54 |
346 | filedev = statbuf.st_dev; |
347 | fileino = statbuf.st_ino; |
99b89507 |
348 | #endif |
a687059c |
349 | filemode = statbuf.st_mode; |
350 | fileuid = statbuf.st_uid; |
351 | filegid = statbuf.st_gid; |
c623bd54 |
352 | if (!S_ISREG(filemode)) { |
353 | warn("Can't do inplace edit: %s is not a regular file", |
354 | oldname ); |
79072805 |
355 | do_close(gv,FALSE); |
c623bd54 |
356 | continue; |
357 | } |
a687059c |
358 | if (*inplace) { |
ff8e2863 |
359 | #ifdef SUFFIX |
79072805 |
360 | add_suffix(sv,inplace); |
ff8e2863 |
361 | #else |
79072805 |
362 | sv_catpv(sv,inplace); |
ff8e2863 |
363 | #endif |
c623bd54 |
364 | #ifndef FLEXFILENAMES |
a0d0e21e |
365 | if (Stat(SvPVX(sv),&statbuf) >= 0 |
c623bd54 |
366 | && statbuf.st_dev == filedev |
367 | && statbuf.st_ino == fileino ) { |
368 | warn("Can't do inplace edit: %s > 14 characters", |
463ee0b2 |
369 | SvPVX(sv) ); |
79072805 |
370 | do_close(gv,FALSE); |
c623bd54 |
371 | continue; |
372 | } |
373 | #endif |
fe14fcc3 |
374 | #ifdef HAS_RENAME |
bee1dbe2 |
375 | #ifndef DOSISH |
463ee0b2 |
376 | if (rename(oldname,SvPVX(sv)) < 0) { |
c623bd54 |
377 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 |
378 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 |
379 | do_close(gv,FALSE); |
c623bd54 |
380 | continue; |
381 | } |
a687059c |
382 | #else |
79072805 |
383 | do_close(gv,FALSE); |
463ee0b2 |
384 | (void)unlink(SvPVX(sv)); |
385 | (void)rename(oldname,SvPVX(sv)); |
a0d0e21e |
386 | do_open(gv,SvPVX(sv),SvCUR(GvSV(gv)),Nullfp); |
ff8e2863 |
387 | #endif /* MSDOS */ |
388 | #else |
463ee0b2 |
389 | (void)UNLINK(SvPVX(sv)); |
390 | if (link(oldname,SvPVX(sv)) < 0) { |
c623bd54 |
391 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 |
392 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 |
393 | do_close(gv,FALSE); |
c623bd54 |
394 | continue; |
395 | } |
a687059c |
396 | (void)UNLINK(oldname); |
397 | #endif |
398 | } |
399 | else { |
bee1dbe2 |
400 | #ifndef DOSISH |
fe14fcc3 |
401 | if (UNLINK(oldname) < 0) { |
402 | warn("Can't rename %s to %s: %s, skipping file", |
2304df62 |
403 | oldname, SvPVX(sv), Strerror(errno) ); |
79072805 |
404 | do_close(gv,FALSE); |
fe14fcc3 |
405 | continue; |
406 | } |
ff8e2863 |
407 | #else |
463ee0b2 |
408 | croak("Can't do inplace edit without backup"); |
ff8e2863 |
409 | #endif |
a687059c |
410 | } |
411 | |
79072805 |
412 | sv_setpvn(sv,">",1); |
413 | sv_catpv(sv,oldname); |
a687059c |
414 | errno = 0; /* in case sprintf set errno */ |
a0d0e21e |
415 | if (!do_open(argvoutgv,SvPVX(sv),SvCUR(sv),Nullfp)) { |
c623bd54 |
416 | warn("Can't do inplace edit on %s: %s", |
2304df62 |
417 | oldname, Strerror(errno) ); |
79072805 |
418 | do_close(gv,FALSE); |
fe14fcc3 |
419 | continue; |
420 | } |
79072805 |
421 | defoutgv = argvoutgv; |
a0d0e21e |
422 | lastfd = fileno(IoIFP(GvIOp(argvoutgv))); |
423 | (void)Fstat(lastfd,&statbuf); |
fe14fcc3 |
424 | #ifdef HAS_FCHMOD |
425 | (void)fchmod(lastfd,filemode); |
a687059c |
426 | #else |
427 | (void)chmod(oldname,filemode); |
428 | #endif |
fe14fcc3 |
429 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
430 | #ifdef HAS_FCHOWN |
431 | (void)fchown(lastfd,fileuid,filegid); |
a687059c |
432 | #else |
fe14fcc3 |
433 | #ifdef HAS_CHOWN |
434 | (void)chown(oldname,fileuid,filegid); |
a687059c |
435 | #endif |
b1248f16 |
436 | #endif |
fe14fcc3 |
437 | } |
a687059c |
438 | } |
a0d0e21e |
439 | return IoIFP(GvIOp(gv)); |
a687059c |
440 | } |
441 | else |
2304df62 |
442 | fprintf(stderr,"Can't open %s: %s\n",SvPV(sv, na), Strerror(errno)); |
a687059c |
443 | } |
444 | if (inplace) { |
79072805 |
445 | (void)do_close(argvoutgv,FALSE); |
85e6fe83 |
446 | defoutgv = gv_fetchpv("STDOUT",TRUE,SVt_PVIO); |
a687059c |
447 | } |
448 | return Nullfp; |
449 | } |
450 | |
fe14fcc3 |
451 | #ifdef HAS_PIPE |
afd9f252 |
452 | void |
79072805 |
453 | do_pipe(sv, rgv, wgv) |
454 | SV *sv; |
455 | GV *rgv; |
456 | GV *wgv; |
afd9f252 |
457 | { |
79072805 |
458 | register IO *rstio; |
459 | register IO *wstio; |
afd9f252 |
460 | int fd[2]; |
461 | |
79072805 |
462 | if (!rgv) |
afd9f252 |
463 | goto badexit; |
79072805 |
464 | if (!wgv) |
afd9f252 |
465 | goto badexit; |
466 | |
a0d0e21e |
467 | rstio = GvIOn(rgv); |
468 | wstio = GvIOn(wgv); |
afd9f252 |
469 | |
a0d0e21e |
470 | if (IoIFP(rstio)) |
79072805 |
471 | do_close(rgv,FALSE); |
a0d0e21e |
472 | if (IoIFP(wstio)) |
79072805 |
473 | do_close(wgv,FALSE); |
afd9f252 |
474 | |
475 | if (pipe(fd) < 0) |
476 | goto badexit; |
8990e307 |
477 | IoIFP(rstio) = fdopen(fd[0], "r"); |
478 | IoOFP(wstio) = fdopen(fd[1], "w"); |
479 | IoIFP(wstio) = IoOFP(wstio); |
480 | IoTYPE(rstio) = '<'; |
481 | IoTYPE(wstio) = '>'; |
482 | if (!IoIFP(rstio) || !IoOFP(wstio)) { |
483 | if (IoIFP(rstio)) fclose(IoIFP(rstio)); |
fe14fcc3 |
484 | else close(fd[0]); |
8990e307 |
485 | if (IoOFP(wstio)) fclose(IoOFP(wstio)); |
fe14fcc3 |
486 | else close(fd[1]); |
487 | goto badexit; |
488 | } |
afd9f252 |
489 | |
79072805 |
490 | sv_setsv(sv,&sv_yes); |
afd9f252 |
491 | return; |
492 | |
493 | badexit: |
79072805 |
494 | sv_setsv(sv,&sv_undef); |
afd9f252 |
495 | return; |
496 | } |
b1248f16 |
497 | #endif |
afd9f252 |
498 | |
a687059c |
499 | bool |
a0d0e21e |
500 | #ifndef CAN_PROTOTYPE |
79072805 |
501 | do_close(gv,explicit) |
502 | GV *gv; |
a687059c |
503 | bool explicit; |
8990e307 |
504 | #else |
505 | do_close(GV *gv, bool explicit) |
a0d0e21e |
506 | #endif /* CAN_PROTOTYPE */ |
a687059c |
507 | { |
508 | bool retval = FALSE; |
79072805 |
509 | register IO *io; |
a687059c |
510 | int status; |
511 | |
79072805 |
512 | if (!gv) |
513 | gv = argvgv; |
a0d0e21e |
514 | if (!gv || SvTYPE(gv) != SVt_PVGV) { |
99b89507 |
515 | errno = EBADF; |
c2ab57d4 |
516 | return FALSE; |
99b89507 |
517 | } |
79072805 |
518 | io = GvIO(gv); |
519 | if (!io) { /* never opened */ |
a687059c |
520 | if (dowarn && explicit) |
79072805 |
521 | warn("Close on unopened file <%s>",GvENAME(gv)); |
a687059c |
522 | return FALSE; |
523 | } |
8990e307 |
524 | if (IoIFP(io)) { |
525 | if (IoTYPE(io) == '|') { |
526 | status = my_pclose(IoIFP(io)); |
c623bd54 |
527 | retval = (status == 0); |
b1248f16 |
528 | statusvalue = (unsigned short)status & 0xffff; |
a687059c |
529 | } |
8990e307 |
530 | else if (IoTYPE(io) == '-') |
a687059c |
531 | retval = TRUE; |
532 | else { |
8990e307 |
533 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */ |
534 | retval = (fclose(IoOFP(io)) != EOF); |
535 | fclose(IoIFP(io)); /* clear stdio, fd already closed */ |
c2ab57d4 |
536 | } |
537 | else |
8990e307 |
538 | retval = (fclose(IoIFP(io)) != EOF); |
a687059c |
539 | } |
8990e307 |
540 | IoOFP(io) = IoIFP(io) = Nullfp; |
79072805 |
541 | } |
542 | if (explicit) { |
8990e307 |
543 | IoLINES(io) = 0; |
544 | IoPAGE(io) = 0; |
545 | IoLINES_LEFT(io) = IoPAGE_LEN(io); |
a687059c |
546 | } |
8990e307 |
547 | IoTYPE(io) = ' '; |
a687059c |
548 | return retval; |
549 | } |
550 | |
551 | bool |
79072805 |
552 | do_eof(gv) |
553 | GV *gv; |
a687059c |
554 | { |
79072805 |
555 | register IO *io; |
a687059c |
556 | int ch; |
557 | |
79072805 |
558 | io = GvIO(gv); |
a687059c |
559 | |
79072805 |
560 | if (!io) |
a687059c |
561 | return TRUE; |
562 | |
8990e307 |
563 | while (IoIFP(io)) { |
a687059c |
564 | |
85e6fe83 |
565 | #ifdef USE_STD_STDIO /* (the code works without this) */ |
8990e307 |
566 | if (IoIFP(io)->_cnt > 0) /* cheat a little, since */ |
a687059c |
567 | return FALSE; /* this is the most usual case */ |
568 | #endif |
569 | |
8990e307 |
570 | ch = getc(IoIFP(io)); |
a687059c |
571 | if (ch != EOF) { |
8990e307 |
572 | (void)ungetc(ch, IoIFP(io)); |
a687059c |
573 | return FALSE; |
574 | } |
85e6fe83 |
575 | #ifdef USE_STD_STDIO |
8990e307 |
576 | if (IoIFP(io)->_cnt < -1) |
577 | IoIFP(io)->_cnt = -1; |
fe14fcc3 |
578 | #endif |
8990e307 |
579 | if (op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */ |
79072805 |
580 | if (!nextargv(argvgv)) /* get another fp handy */ |
a687059c |
581 | return TRUE; |
582 | } |
583 | else |
584 | return TRUE; /* normal fp, definitely end of file */ |
585 | } |
586 | return TRUE; |
587 | } |
588 | |
589 | long |
79072805 |
590 | do_tell(gv) |
591 | GV *gv; |
a687059c |
592 | { |
79072805 |
593 | register IO *io; |
a687059c |
594 | |
79072805 |
595 | if (!gv) |
a687059c |
596 | goto phooey; |
597 | |
79072805 |
598 | io = GvIO(gv); |
8990e307 |
599 | if (!io || !IoIFP(io)) |
a687059c |
600 | goto phooey; |
601 | |
bee1dbe2 |
602 | #ifdef ULTRIX_STDIO_BOTCH |
8990e307 |
603 | if (feof(IoIFP(io))) |
604 | (void)fseek (IoIFP(io), 0L, 2); /* ultrix 1.2 workaround */ |
bee1dbe2 |
605 | #endif |
a687059c |
606 | |
8990e307 |
607 | return ftell(IoIFP(io)); |
a687059c |
608 | |
609 | phooey: |
610 | if (dowarn) |
611 | warn("tell() on unopened file"); |
99b89507 |
612 | errno = EBADF; |
a687059c |
613 | return -1L; |
614 | } |
615 | |
616 | bool |
79072805 |
617 | do_seek(gv, pos, whence) |
618 | GV *gv; |
a687059c |
619 | long pos; |
620 | int whence; |
621 | { |
79072805 |
622 | register IO *io; |
a687059c |
623 | |
79072805 |
624 | if (!gv) |
a687059c |
625 | goto nuts; |
626 | |
79072805 |
627 | io = GvIO(gv); |
8990e307 |
628 | if (!io || !IoIFP(io)) |
a687059c |
629 | goto nuts; |
630 | |
bee1dbe2 |
631 | #ifdef ULTRIX_STDIO_BOTCH |
8990e307 |
632 | if (feof(IoIFP(io))) |
633 | (void)fseek (IoIFP(io), 0L, 2); /* ultrix 1.2 workaround */ |
bee1dbe2 |
634 | #endif |
a687059c |
635 | |
8990e307 |
636 | return fseek(IoIFP(io), pos, whence) >= 0; |
a687059c |
637 | |
638 | nuts: |
639 | if (dowarn) |
640 | warn("seek() on unopened file"); |
99b89507 |
641 | errno = EBADF; |
a687059c |
642 | return FALSE; |
643 | } |
644 | |
a0d0e21e |
645 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP) |
c2ab57d4 |
646 | /* code courtesy of William Kucharski */ |
fe14fcc3 |
647 | #define HAS_CHSIZE |
6eb13c3b |
648 | |
79072805 |
649 | I32 chsize(fd, length) |
650 | I32 fd; /* file descriptor */ |
85e6fe83 |
651 | Off_t length; /* length to set file to */ |
6eb13c3b |
652 | { |
653 | extern long lseek(); |
654 | struct flock fl; |
655 | struct stat filebuf; |
656 | |
a0d0e21e |
657 | if (Fstat(fd, &filebuf) < 0) |
6eb13c3b |
658 | return -1; |
659 | |
660 | if (filebuf.st_size < length) { |
661 | |
662 | /* extend file length */ |
663 | |
664 | if ((lseek(fd, (length - 1), 0)) < 0) |
665 | return -1; |
666 | |
667 | /* write a "0" byte */ |
668 | |
669 | if ((write(fd, "", 1)) != 1) |
670 | return -1; |
671 | } |
672 | else { |
673 | /* truncate length */ |
674 | |
675 | fl.l_whence = 0; |
676 | fl.l_len = 0; |
677 | fl.l_start = length; |
a0d0e21e |
678 | fl.l_type = F_WRLCK; /* write lock on file space */ |
6eb13c3b |
679 | |
680 | /* |
a0d0e21e |
681 | * This relies on the UNDOCUMENTED F_FREESP argument to |
6eb13c3b |
682 | * fcntl(2), which truncates the file so that it ends at the |
683 | * position indicated by fl.l_start. |
684 | * |
685 | * Will minor miracles never cease? |
686 | */ |
687 | |
a0d0e21e |
688 | if (fcntl(fd, F_FREESP, &fl) < 0) |
6eb13c3b |
689 | return -1; |
690 | |
691 | } |
692 | |
693 | return 0; |
694 | } |
a0d0e21e |
695 | #endif /* F_FREESP */ |
ff8e2863 |
696 | |
79072805 |
697 | I32 |
698 | looks_like_number(sv) |
699 | SV *sv; |
a687059c |
700 | { |
701 | register char *s; |
702 | register char *send; |
703 | |
463ee0b2 |
704 | if (!SvPOK(sv)) { |
705 | STRLEN len; |
706 | if (!SvPOKp(sv)) |
707 | return TRUE; |
708 | s = SvPV(sv, len); |
709 | send = s + len; |
710 | } |
711 | else { |
712 | s = SvPVX(sv); |
713 | send = s + SvCUR(sv); |
714 | } |
99b89507 |
715 | while (isSPACE(*s)) |
a687059c |
716 | s++; |
717 | if (s >= send) |
718 | return FALSE; |
719 | if (*s == '+' || *s == '-') |
720 | s++; |
99b89507 |
721 | while (isDIGIT(*s)) |
a687059c |
722 | s++; |
723 | if (s == send) |
724 | return TRUE; |
725 | if (*s == '.') |
726 | s++; |
463ee0b2 |
727 | else if (s == SvPVX(sv)) |
a687059c |
728 | return FALSE; |
99b89507 |
729 | while (isDIGIT(*s)) |
a687059c |
730 | s++; |
731 | if (s == send) |
732 | return TRUE; |
733 | if (*s == 'e' || *s == 'E') { |
734 | s++; |
735 | if (*s == '+' || *s == '-') |
736 | s++; |
99b89507 |
737 | while (isDIGIT(*s)) |
a687059c |
738 | s++; |
739 | } |
99b89507 |
740 | while (isSPACE(*s)) |
a687059c |
741 | s++; |
742 | if (s >= send) |
743 | return TRUE; |
744 | return FALSE; |
745 | } |
746 | |
747 | bool |
79072805 |
748 | do_print(sv,fp) |
749 | register SV *sv; |
a687059c |
750 | FILE *fp; |
751 | { |
752 | register char *tmps; |
463ee0b2 |
753 | STRLEN len; |
a687059c |
754 | |
79072805 |
755 | /* assuming fp is checked earlier */ |
756 | if (!sv) |
757 | return TRUE; |
758 | if (ofmt) { |
8990e307 |
759 | if (SvGMAGICAL(sv)) |
79072805 |
760 | mg_get(sv); |
463ee0b2 |
761 | if (SvIOK(sv) && SvIVX(sv) != 0) { |
762 | fprintf(fp, ofmt, (double)SvIVX(sv)); |
79072805 |
763 | return !ferror(fp); |
764 | } |
463ee0b2 |
765 | if ( (SvNOK(sv) && SvNVX(sv) != 0.0) |
79072805 |
766 | || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) { |
463ee0b2 |
767 | fprintf(fp, ofmt, SvNVX(sv)); |
79072805 |
768 | return !ferror(fp); |
769 | } |
a687059c |
770 | } |
79072805 |
771 | switch (SvTYPE(sv)) { |
772 | case SVt_NULL: |
8990e307 |
773 | if (dowarn) |
774 | warn(warn_uninit); |
ff8e2863 |
775 | return TRUE; |
79072805 |
776 | case SVt_IV: |
a0d0e21e |
777 | if (SvIOK(sv)) { |
778 | if (SvGMAGICAL(sv)) |
779 | mg_get(sv); |
780 | fprintf(fp, "%ld", (long)SvIVX(sv)); |
781 | return !ferror(fp); |
782 | } |
783 | /* FALL THROUGH */ |
79072805 |
784 | default: |
463ee0b2 |
785 | tmps = SvPV(sv, len); |
79072805 |
786 | break; |
ff8e2863 |
787 | } |
a0d0e21e |
788 | if (len && (fwrite1(tmps,1,len,fp) == 0 || ferror(fp))) |
a687059c |
789 | return FALSE; |
79072805 |
790 | return TRUE; |
a687059c |
791 | } |
792 | |
79072805 |
793 | I32 |
794 | my_stat(ARGS) |
795 | dARGS |
a687059c |
796 | { |
79072805 |
797 | dSP; |
798 | IO *io; |
799 | |
a0d0e21e |
800 | if (op->op_flags & OPf_REF) { |
79072805 |
801 | EXTEND(sp,1); |
802 | io = GvIO(cGVOP->op_gv); |
8990e307 |
803 | if (io && IoIFP(io)) { |
79072805 |
804 | statgv = cGVOP->op_gv; |
805 | sv_setpv(statname,""); |
806 | laststype = OP_STAT; |
a0d0e21e |
807 | return (laststatval = Fstat(fileno(IoIFP(io)), &statcache)); |
a687059c |
808 | } |
809 | else { |
79072805 |
810 | if (cGVOP->op_gv == defgv) |
57ebbfd0 |
811 | return laststatval; |
a687059c |
812 | if (dowarn) |
813 | warn("Stat on unopened file <%s>", |
79072805 |
814 | GvENAME(cGVOP->op_gv)); |
815 | statgv = Nullgv; |
816 | sv_setpv(statname,""); |
57ebbfd0 |
817 | return (laststatval = -1); |
a687059c |
818 | } |
819 | } |
820 | else { |
79072805 |
821 | dPOPss; |
822 | PUTBACK; |
823 | statgv = Nullgv; |
463ee0b2 |
824 | sv_setpv(statname,SvPV(sv, na)); |
79072805 |
825 | laststype = OP_STAT; |
a0d0e21e |
826 | laststatval = Stat(SvPV(sv, na),&statcache); |
463ee0b2 |
827 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 |
828 | warn(warn_nl, "stat"); |
829 | return laststatval; |
a687059c |
830 | } |
831 | } |
832 | |
79072805 |
833 | I32 |
834 | my_lstat(ARGS) |
835 | dARGS |
c623bd54 |
836 | { |
79072805 |
837 | dSP; |
838 | SV *sv; |
a0d0e21e |
839 | if (op->op_flags & OPf_REF) { |
79072805 |
840 | EXTEND(sp,1); |
841 | if (cGVOP->op_gv == defgv) { |
842 | if (laststype != OP_LSTAT) |
463ee0b2 |
843 | croak("The stat preceding -l _ wasn't an lstat"); |
fe14fcc3 |
844 | return laststatval; |
845 | } |
463ee0b2 |
846 | croak("You can't use -l on a filehandle"); |
fe14fcc3 |
847 | } |
c623bd54 |
848 | |
79072805 |
849 | laststype = OP_LSTAT; |
850 | statgv = Nullgv; |
851 | sv = POPs; |
852 | PUTBACK; |
463ee0b2 |
853 | sv_setpv(statname,SvPV(sv, na)); |
fe14fcc3 |
854 | #ifdef HAS_LSTAT |
463ee0b2 |
855 | laststatval = lstat(SvPV(sv, na),&statcache); |
c623bd54 |
856 | #else |
a0d0e21e |
857 | laststatval = Stat(SvPV(sv, na),&statcache); |
c623bd54 |
858 | #endif |
463ee0b2 |
859 | if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n')) |
bee1dbe2 |
860 | warn(warn_nl, "lstat"); |
861 | return laststatval; |
c623bd54 |
862 | } |
863 | |
a687059c |
864 | bool |
79072805 |
865 | do_aexec(really,mark,sp) |
866 | SV *really; |
867 | register SV **mark; |
868 | register SV **sp; |
a687059c |
869 | { |
a687059c |
870 | register char **a; |
a687059c |
871 | char *tmps; |
872 | |
79072805 |
873 | if (sp > mark) { |
874 | New(401,Argv, sp - mark + 1, char*); |
bee1dbe2 |
875 | a = Argv; |
79072805 |
876 | while (++mark <= sp) { |
877 | if (*mark) |
463ee0b2 |
878 | *a++ = SvPVx(*mark, na); |
a687059c |
879 | else |
880 | *a++ = ""; |
881 | } |
882 | *a = Nullch; |
bee1dbe2 |
883 | if (*Argv[0] != '/') /* will execvp use PATH? */ |
79072805 |
884 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
463ee0b2 |
885 | if (really && *(tmps = SvPV(really, na))) |
bee1dbe2 |
886 | execvp(tmps,Argv); |
a687059c |
887 | else |
bee1dbe2 |
888 | execvp(Argv[0],Argv); |
a0d0e21e |
889 | if (dowarn) |
890 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); |
a687059c |
891 | } |
bee1dbe2 |
892 | do_execfree(); |
a687059c |
893 | return FALSE; |
894 | } |
895 | |
fe14fcc3 |
896 | void |
ff8e2863 |
897 | do_execfree() |
898 | { |
899 | if (Argv) { |
900 | Safefree(Argv); |
901 | Argv = Null(char **); |
902 | } |
903 | if (Cmd) { |
904 | Safefree(Cmd); |
905 | Cmd = Nullch; |
906 | } |
907 | } |
908 | |
a687059c |
909 | bool |
910 | do_exec(cmd) |
911 | char *cmd; |
912 | { |
913 | register char **a; |
914 | register char *s; |
a687059c |
915 | char flags[10]; |
916 | |
a687059c |
917 | /* save an extra exec if possible */ |
918 | |
bf38876a |
919 | #ifdef CSH |
920 | if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) { |
a687059c |
921 | strcpy(flags,"-c"); |
bf38876a |
922 | s = cmd+cshlen+3; |
a687059c |
923 | if (*s == 'f') { |
924 | s++; |
925 | strcat(flags,"f"); |
926 | } |
927 | if (*s == ' ') |
928 | s++; |
929 | if (*s++ == '\'') { |
930 | char *ncmd = s; |
931 | |
932 | while (*s) |
933 | s++; |
934 | if (s[-1] == '\n') |
935 | *--s = '\0'; |
936 | if (s[-1] == '\'') { |
937 | *--s = '\0'; |
bf38876a |
938 | execl(cshname,"csh", flags,ncmd,(char*)0); |
a687059c |
939 | *s = '\''; |
940 | return FALSE; |
941 | } |
942 | } |
943 | } |
bf38876a |
944 | #endif /* CSH */ |
a687059c |
945 | |
946 | /* see if there are shell metacharacters in it */ |
947 | |
99b89507 |
948 | /*SUPPRESS 530*/ |
949 | for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */ |
63f2c1e1 |
950 | if (*s == '=') |
951 | goto doshell; |
a687059c |
952 | for (s = cmd; *s; s++) { |
93a17b20 |
953 | if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c |
954 | if (*s == '\n' && !s[1]) { |
955 | *s = '\0'; |
956 | break; |
957 | } |
958 | doshell: |
959 | execl("/bin/sh","sh","-c",cmd,(char*)0); |
960 | return FALSE; |
961 | } |
962 | } |
ff8e2863 |
963 | New(402,Argv, (s - cmd) / 2 + 2, char*); |
a0d0e21e |
964 | Cmd = savepvn(cmd, s-cmd); |
ff8e2863 |
965 | a = Argv; |
966 | for (s = Cmd; *s;) { |
99b89507 |
967 | while (*s && isSPACE(*s)) s++; |
a687059c |
968 | if (*s) |
969 | *(a++) = s; |
99b89507 |
970 | while (*s && !isSPACE(*s)) s++; |
a687059c |
971 | if (*s) |
972 | *s++ = '\0'; |
973 | } |
974 | *a = Nullch; |
ff8e2863 |
975 | if (Argv[0]) { |
976 | execvp(Argv[0],Argv); |
b1248f16 |
977 | if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
ff8e2863 |
978 | do_execfree(); |
a687059c |
979 | goto doshell; |
b1248f16 |
980 | } |
a0d0e21e |
981 | if (dowarn) |
982 | warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno)); |
a687059c |
983 | } |
ff8e2863 |
984 | do_execfree(); |
a687059c |
985 | return FALSE; |
986 | } |
987 | |
79072805 |
988 | I32 |
989 | apply(type,mark,sp) |
990 | I32 type; |
991 | register SV **mark; |
992 | register SV **sp; |
a687059c |
993 | { |
79072805 |
994 | register I32 val; |
995 | register I32 val2; |
996 | register I32 tot = 0; |
a687059c |
997 | char *s; |
79072805 |
998 | SV **oldmark = mark; |
a687059c |
999 | |
463ee0b2 |
1000 | if (tainting) { |
1001 | while (++mark <= sp) { |
1002 | if (SvMAGICAL(*mark) && mg_find(*mark, 't')) |
1003 | tainted = TRUE; |
1004 | } |
1005 | mark = oldmark; |
1006 | } |
a687059c |
1007 | switch (type) { |
79072805 |
1008 | case OP_CHMOD: |
1009 | TAINT_PROPER("chmod"); |
1010 | if (++mark <= sp) { |
1011 | tot = sp - mark; |
463ee0b2 |
1012 | val = SvIVx(*mark); |
79072805 |
1013 | while (++mark <= sp) { |
463ee0b2 |
1014 | if (chmod(SvPVx(*mark, na),val)) |
a687059c |
1015 | tot--; |
1016 | } |
1017 | } |
1018 | break; |
fe14fcc3 |
1019 | #ifdef HAS_CHOWN |
79072805 |
1020 | case OP_CHOWN: |
1021 | TAINT_PROPER("chown"); |
1022 | if (sp - mark > 2) { |
463ee0b2 |
1023 | val = SvIVx(*++mark); |
1024 | val2 = SvIVx(*++mark); |
a0d0e21e |
1025 | tot = sp - mark; |
79072805 |
1026 | while (++mark <= sp) { |
463ee0b2 |
1027 | if (chown(SvPVx(*mark, na),val,val2)) |
a687059c |
1028 | tot--; |
1029 | } |
1030 | } |
1031 | break; |
b1248f16 |
1032 | #endif |
fe14fcc3 |
1033 | #ifdef HAS_KILL |
79072805 |
1034 | case OP_KILL: |
1035 | TAINT_PROPER("kill"); |
463ee0b2 |
1036 | s = SvPVx(*++mark, na); |
79072805 |
1037 | tot = sp - mark; |
1038 | if (isUPPER(*s)) { |
1039 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') |
1040 | s += 3; |
1041 | if (!(val = whichsig(s))) |
463ee0b2 |
1042 | croak("Unrecognized signal name \"%s\"",s); |
79072805 |
1043 | } |
1044 | else |
463ee0b2 |
1045 | val = SvIVx(*mark); |
79072805 |
1046 | if (val < 0) { |
1047 | val = -val; |
1048 | while (++mark <= sp) { |
463ee0b2 |
1049 | I32 proc = SvIVx(*mark); |
fe14fcc3 |
1050 | #ifdef HAS_KILLPG |
79072805 |
1051 | if (killpg(proc,val)) /* BSD */ |
a687059c |
1052 | #else |
79072805 |
1053 | if (kill(-proc,val)) /* SYSV */ |
a687059c |
1054 | #endif |
79072805 |
1055 | tot--; |
a687059c |
1056 | } |
79072805 |
1057 | } |
1058 | else { |
1059 | while (++mark <= sp) { |
463ee0b2 |
1060 | if (kill(SvIVx(*mark),val)) |
79072805 |
1061 | tot--; |
a687059c |
1062 | } |
1063 | } |
1064 | break; |
b1248f16 |
1065 | #endif |
79072805 |
1066 | case OP_UNLINK: |
1067 | TAINT_PROPER("unlink"); |
1068 | tot = sp - mark; |
1069 | while (++mark <= sp) { |
463ee0b2 |
1070 | s = SvPVx(*mark, na); |
a687059c |
1071 | if (euid || unsafe) { |
1072 | if (UNLINK(s)) |
1073 | tot--; |
1074 | } |
1075 | else { /* don't let root wipe out directories without -U */ |
fe14fcc3 |
1076 | #ifdef HAS_LSTAT |
c623bd54 |
1077 | if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c |
1078 | #else |
a0d0e21e |
1079 | if (Stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c |
1080 | #endif |
a687059c |
1081 | tot--; |
1082 | else { |
1083 | if (UNLINK(s)) |
1084 | tot--; |
1085 | } |
1086 | } |
1087 | } |
1088 | break; |
a0d0e21e |
1089 | #ifdef HAS_UTIME |
79072805 |
1090 | case OP_UTIME: |
1091 | TAINT_PROPER("utime"); |
1092 | if (sp - mark > 2) { |
663a0e37 |
1093 | #ifdef I_UTIME |
1094 | struct utimbuf utbuf; |
1095 | #else |
a687059c |
1096 | struct { |
663a0e37 |
1097 | long actime; |
1098 | long modtime; |
a687059c |
1099 | } utbuf; |
663a0e37 |
1100 | #endif |
a687059c |
1101 | |
afd9f252 |
1102 | Zero(&utbuf, sizeof utbuf, char); |
463ee0b2 |
1103 | utbuf.actime = SvIVx(*++mark); /* time accessed */ |
1104 | utbuf.modtime = SvIVx(*++mark); /* time modified */ |
79072805 |
1105 | tot = sp - mark; |
1106 | while (++mark <= sp) { |
463ee0b2 |
1107 | if (utime(SvPVx(*mark, na),&utbuf)) |
a687059c |
1108 | tot--; |
1109 | } |
a687059c |
1110 | } |
1111 | else |
79072805 |
1112 | tot = 0; |
a687059c |
1113 | break; |
a0d0e21e |
1114 | #endif |
a687059c |
1115 | } |
1116 | return tot; |
1117 | } |
1118 | |
1119 | /* Do the permissions allow some operation? Assumes statcache already set. */ |
a0d0e21e |
1120 | #ifndef VMS /* VMS' cando is in vms.c */ |
79072805 |
1121 | I32 |
a687059c |
1122 | cando(bit, effective, statbufp) |
79072805 |
1123 | I32 bit; |
1124 | I32 effective; |
a687059c |
1125 | register struct stat *statbufp; |
1126 | { |
bee1dbe2 |
1127 | #ifdef DOSISH |
fe14fcc3 |
1128 | /* [Comments and code from Len Reed] |
1129 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write |
1130 | * to write-protected files. The execute permission bit is set |
1131 | * by the Miscrosoft C library stat() function for the following: |
1132 | * .exe files |
1133 | * .com files |
1134 | * .bat files |
1135 | * directories |
1136 | * All files and directories are readable. |
1137 | * Directories and special files, e.g. "CON", cannot be |
1138 | * write-protected. |
1139 | * [Comment by Tom Dinger -- a directory can have the write-protect |
1140 | * bit set in the file system, but DOS permits changes to |
1141 | * the directory anyway. In addition, all bets are off |
1142 | * here for networked software, such as Novell and |
1143 | * Sun's PC-NFS.] |
1144 | */ |
1145 | |
bee1dbe2 |
1146 | /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat |
1147 | * too so it will actually look into the files for magic numbers |
1148 | */ |
fe14fcc3 |
1149 | return (bit & statbufp->st_mode) ? TRUE : FALSE; |
1150 | |
1151 | #else /* ! MSDOS */ |
a687059c |
1152 | if ((effective ? euid : uid) == 0) { /* root is special */ |
c623bd54 |
1153 | if (bit == S_IXUSR) { |
1154 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) |
a687059c |
1155 | return TRUE; |
1156 | } |
1157 | else |
1158 | return TRUE; /* root reads and writes anything */ |
1159 | return FALSE; |
1160 | } |
1161 | if (statbufp->st_uid == (effective ? euid : uid) ) { |
1162 | if (statbufp->st_mode & bit) |
1163 | return TRUE; /* ok as "user" */ |
1164 | } |
79072805 |
1165 | else if (ingroup((I32)statbufp->st_gid,effective)) { |
a687059c |
1166 | if (statbufp->st_mode & bit >> 3) |
1167 | return TRUE; /* ok as "group" */ |
1168 | } |
1169 | else if (statbufp->st_mode & bit >> 6) |
1170 | return TRUE; /* ok as "other" */ |
1171 | return FALSE; |
fe14fcc3 |
1172 | #endif /* ! MSDOS */ |
a687059c |
1173 | } |
a0d0e21e |
1174 | #endif /* ! VMS */ |
a687059c |
1175 | |
79072805 |
1176 | I32 |
a687059c |
1177 | ingroup(testgid,effective) |
79072805 |
1178 | I32 testgid; |
1179 | I32 effective; |
a687059c |
1180 | { |
1181 | if (testgid == (effective ? egid : gid)) |
1182 | return TRUE; |
fe14fcc3 |
1183 | #ifdef HAS_GETGROUPS |
a687059c |
1184 | #ifndef NGROUPS |
1185 | #define NGROUPS 32 |
1186 | #endif |
1187 | { |
a0d0e21e |
1188 | Groups_t gary[NGROUPS]; |
79072805 |
1189 | I32 anum; |
a687059c |
1190 | |
1191 | anum = getgroups(NGROUPS,gary); |
1192 | while (--anum >= 0) |
1193 | if (gary[anum] == testgid) |
1194 | return TRUE; |
1195 | } |
1196 | #endif |
1197 | return FALSE; |
1198 | } |
c2ab57d4 |
1199 | |
fe14fcc3 |
1200 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 |
1201 | |
79072805 |
1202 | I32 |
1203 | do_ipcget(optype, mark, sp) |
1204 | I32 optype; |
1205 | SV **mark; |
1206 | SV **sp; |
c2ab57d4 |
1207 | { |
c2ab57d4 |
1208 | key_t key; |
79072805 |
1209 | I32 n, flags; |
c2ab57d4 |
1210 | |
463ee0b2 |
1211 | key = (key_t)SvNVx(*++mark); |
1212 | n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark); |
1213 | flags = SvIVx(*++mark); |
c2ab57d4 |
1214 | errno = 0; |
1215 | switch (optype) |
1216 | { |
fe14fcc3 |
1217 | #ifdef HAS_MSG |
79072805 |
1218 | case OP_MSGGET: |
c2ab57d4 |
1219 | return msgget(key, flags); |
e5d73d77 |
1220 | #endif |
fe14fcc3 |
1221 | #ifdef HAS_SEM |
79072805 |
1222 | case OP_SEMGET: |
c2ab57d4 |
1223 | return semget(key, n, flags); |
e5d73d77 |
1224 | #endif |
fe14fcc3 |
1225 | #ifdef HAS_SHM |
79072805 |
1226 | case OP_SHMGET: |
c2ab57d4 |
1227 | return shmget(key, n, flags); |
e5d73d77 |
1228 | #endif |
fe14fcc3 |
1229 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
1230 | default: |
463ee0b2 |
1231 | croak("%s not implemented", op_name[optype]); |
e5d73d77 |
1232 | #endif |
c2ab57d4 |
1233 | } |
1234 | return -1; /* should never happen */ |
1235 | } |
1236 | |
79072805 |
1237 | I32 |
1238 | do_ipcctl(optype, mark, sp) |
1239 | I32 optype; |
1240 | SV **mark; |
1241 | SV **sp; |
c2ab57d4 |
1242 | { |
79072805 |
1243 | SV *astr; |
c2ab57d4 |
1244 | char *a; |
a0d0e21e |
1245 | I32 id, n, cmd, infosize, getinfo; |
1246 | I32 ret = -1; |
c2ab57d4 |
1247 | |
463ee0b2 |
1248 | id = SvIVx(*++mark); |
1249 | n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0; |
1250 | cmd = SvIVx(*++mark); |
79072805 |
1251 | astr = *++mark; |
c2ab57d4 |
1252 | infosize = 0; |
1253 | getinfo = (cmd == IPC_STAT); |
1254 | |
1255 | switch (optype) |
1256 | { |
fe14fcc3 |
1257 | #ifdef HAS_MSG |
79072805 |
1258 | case OP_MSGCTL: |
c2ab57d4 |
1259 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1260 | infosize = sizeof(struct msqid_ds); |
1261 | break; |
e5d73d77 |
1262 | #endif |
fe14fcc3 |
1263 | #ifdef HAS_SHM |
79072805 |
1264 | case OP_SHMCTL: |
c2ab57d4 |
1265 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1266 | infosize = sizeof(struct shmid_ds); |
1267 | break; |
e5d73d77 |
1268 | #endif |
fe14fcc3 |
1269 | #ifdef HAS_SEM |
79072805 |
1270 | case OP_SEMCTL: |
c2ab57d4 |
1271 | if (cmd == IPC_STAT || cmd == IPC_SET) |
1272 | infosize = sizeof(struct semid_ds); |
1273 | else if (cmd == GETALL || cmd == SETALL) |
1274 | { |
1275 | struct semid_ds semds; |
1276 | if (semctl(id, 0, IPC_STAT, &semds) == -1) |
1277 | return -1; |
1278 | getinfo = (cmd == GETALL); |
6e21c824 |
1279 | infosize = semds.sem_nsems * sizeof(short); |
1280 | /* "short" is technically wrong but much more portable |
1281 | than guessing about u_?short(_t)? */ |
c2ab57d4 |
1282 | } |
1283 | break; |
e5d73d77 |
1284 | #endif |
fe14fcc3 |
1285 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
1286 | default: |
463ee0b2 |
1287 | croak("%s not implemented", op_name[optype]); |
e5d73d77 |
1288 | #endif |
c2ab57d4 |
1289 | } |
1290 | |
1291 | if (infosize) |
1292 | { |
a0d0e21e |
1293 | STRLEN len; |
c2ab57d4 |
1294 | if (getinfo) |
1295 | { |
a0d0e21e |
1296 | SvPV_force(astr, len); |
1297 | a = SvGROW(astr, infosize+1); |
c2ab57d4 |
1298 | } |
1299 | else |
1300 | { |
463ee0b2 |
1301 | a = SvPV(astr, len); |
1302 | if (len != infosize) |
1303 | croak("Bad arg length for %s, is %d, should be %d", |
1304 | op_name[optype], len, infosize); |
c2ab57d4 |
1305 | } |
1306 | } |
1307 | else |
1308 | { |
463ee0b2 |
1309 | I32 i = SvIV(astr); |
c2ab57d4 |
1310 | a = (char *)i; /* ouch */ |
1311 | } |
1312 | errno = 0; |
1313 | switch (optype) |
1314 | { |
fe14fcc3 |
1315 | #ifdef HAS_MSG |
79072805 |
1316 | case OP_MSGCTL: |
bee1dbe2 |
1317 | ret = msgctl(id, cmd, (struct msqid_ds *)a); |
c2ab57d4 |
1318 | break; |
e5d73d77 |
1319 | #endif |
fe14fcc3 |
1320 | #ifdef HAS_SEM |
79072805 |
1321 | case OP_SEMCTL: |
1322 | ret = semctl(id, n, cmd, (struct semid_ds *)a); |
c2ab57d4 |
1323 | break; |
e5d73d77 |
1324 | #endif |
fe14fcc3 |
1325 | #ifdef HAS_SHM |
79072805 |
1326 | case OP_SHMCTL: |
bee1dbe2 |
1327 | ret = shmctl(id, cmd, (struct shmid_ds *)a); |
c2ab57d4 |
1328 | break; |
e5d73d77 |
1329 | #endif |
c2ab57d4 |
1330 | } |
1331 | if (getinfo && ret >= 0) { |
79072805 |
1332 | SvCUR_set(astr, infosize); |
1333 | *SvEND(astr) = '\0'; |
a0d0e21e |
1334 | SvSETMAGIC(astr); |
c2ab57d4 |
1335 | } |
1336 | return ret; |
1337 | } |
1338 | |
79072805 |
1339 | I32 |
1340 | do_msgsnd(mark, sp) |
1341 | SV **mark; |
1342 | SV **sp; |
c2ab57d4 |
1343 | { |
fe14fcc3 |
1344 | #ifdef HAS_MSG |
79072805 |
1345 | SV *mstr; |
c2ab57d4 |
1346 | char *mbuf; |
79072805 |
1347 | I32 id, msize, flags; |
463ee0b2 |
1348 | STRLEN len; |
c2ab57d4 |
1349 | |
463ee0b2 |
1350 | id = SvIVx(*++mark); |
79072805 |
1351 | mstr = *++mark; |
463ee0b2 |
1352 | flags = SvIVx(*++mark); |
1353 | mbuf = SvPV(mstr, len); |
1354 | if ((msize = len - sizeof(long)) < 0) |
1355 | croak("Arg too short for msgsnd"); |
c2ab57d4 |
1356 | errno = 0; |
bee1dbe2 |
1357 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); |
e5d73d77 |
1358 | #else |
463ee0b2 |
1359 | croak("msgsnd not implemented"); |
e5d73d77 |
1360 | #endif |
c2ab57d4 |
1361 | } |
1362 | |
79072805 |
1363 | I32 |
1364 | do_msgrcv(mark, sp) |
1365 | SV **mark; |
1366 | SV **sp; |
c2ab57d4 |
1367 | { |
fe14fcc3 |
1368 | #ifdef HAS_MSG |
79072805 |
1369 | SV *mstr; |
c2ab57d4 |
1370 | char *mbuf; |
1371 | long mtype; |
79072805 |
1372 | I32 id, msize, flags, ret; |
463ee0b2 |
1373 | STRLEN len; |
79072805 |
1374 | |
463ee0b2 |
1375 | id = SvIVx(*++mark); |
79072805 |
1376 | mstr = *++mark; |
463ee0b2 |
1377 | msize = SvIVx(*++mark); |
1378 | mtype = (long)SvIVx(*++mark); |
1379 | flags = SvIVx(*++mark); |
ed6116ce |
1380 | if (SvTHINKFIRST(mstr)) { |
1381 | if (SvREADONLY(mstr)) |
1382 | croak("Can't msgrcv to readonly var"); |
1383 | if (SvROK(mstr)) |
1384 | sv_unref(mstr); |
1385 | } |
a0d0e21e |
1386 | SvPV_force(mstr, len); |
1387 | mbuf = SvGROW(mstr, sizeof(long)+msize+1); |
1388 | |
c2ab57d4 |
1389 | errno = 0; |
bee1dbe2 |
1390 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); |
c2ab57d4 |
1391 | if (ret >= 0) { |
79072805 |
1392 | SvCUR_set(mstr, sizeof(long)+ret); |
1393 | *SvEND(mstr) = '\0'; |
c2ab57d4 |
1394 | } |
1395 | return ret; |
e5d73d77 |
1396 | #else |
463ee0b2 |
1397 | croak("msgrcv not implemented"); |
e5d73d77 |
1398 | #endif |
c2ab57d4 |
1399 | } |
1400 | |
79072805 |
1401 | I32 |
1402 | do_semop(mark, sp) |
1403 | SV **mark; |
1404 | SV **sp; |
c2ab57d4 |
1405 | { |
fe14fcc3 |
1406 | #ifdef HAS_SEM |
79072805 |
1407 | SV *opstr; |
c2ab57d4 |
1408 | char *opbuf; |
463ee0b2 |
1409 | I32 id; |
1410 | STRLEN opsize; |
c2ab57d4 |
1411 | |
463ee0b2 |
1412 | id = SvIVx(*++mark); |
79072805 |
1413 | opstr = *++mark; |
463ee0b2 |
1414 | opbuf = SvPV(opstr, opsize); |
c2ab57d4 |
1415 | if (opsize < sizeof(struct sembuf) |
1416 | || (opsize % sizeof(struct sembuf)) != 0) { |
1417 | errno = EINVAL; |
1418 | return -1; |
1419 | } |
1420 | errno = 0; |
6e21c824 |
1421 | return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf)); |
e5d73d77 |
1422 | #else |
463ee0b2 |
1423 | croak("semop not implemented"); |
e5d73d77 |
1424 | #endif |
c2ab57d4 |
1425 | } |
1426 | |
79072805 |
1427 | I32 |
1428 | do_shmio(optype, mark, sp) |
1429 | I32 optype; |
1430 | SV **mark; |
1431 | SV **sp; |
c2ab57d4 |
1432 | { |
fe14fcc3 |
1433 | #ifdef HAS_SHM |
79072805 |
1434 | SV *mstr; |
c2ab57d4 |
1435 | char *mbuf, *shm; |
79072805 |
1436 | I32 id, mpos, msize; |
463ee0b2 |
1437 | STRLEN len; |
c2ab57d4 |
1438 | struct shmid_ds shmds; |
c2ab57d4 |
1439 | |
463ee0b2 |
1440 | id = SvIVx(*++mark); |
79072805 |
1441 | mstr = *++mark; |
463ee0b2 |
1442 | mpos = SvIVx(*++mark); |
1443 | msize = SvIVx(*++mark); |
c2ab57d4 |
1444 | errno = 0; |
1445 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
1446 | return -1; |
1447 | if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) { |
1448 | errno = EFAULT; /* can't do as caller requested */ |
1449 | return -1; |
1450 | } |
a0d0e21e |
1451 | shm = (Shmat_t)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0); |
c2ab57d4 |
1452 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
1453 | return -1; |
79072805 |
1454 | if (optype == OP_SHMREAD) { |
a0d0e21e |
1455 | SvPV_force(mstr, len); |
1456 | mbuf = SvGROW(mstr, msize+1); |
1457 | |
bee1dbe2 |
1458 | Copy(shm + mpos, mbuf, msize, char); |
79072805 |
1459 | SvCUR_set(mstr, msize); |
1460 | *SvEND(mstr) = '\0'; |
a0d0e21e |
1461 | SvSETMAGIC(mstr); |
c2ab57d4 |
1462 | } |
1463 | else { |
79072805 |
1464 | I32 n; |
c2ab57d4 |
1465 | |
a0d0e21e |
1466 | mbuf = SvPV(mstr, len); |
463ee0b2 |
1467 | if ((n = len) > msize) |
c2ab57d4 |
1468 | n = msize; |
bee1dbe2 |
1469 | Copy(mbuf, shm + mpos, n, char); |
c2ab57d4 |
1470 | if (n < msize) |
bee1dbe2 |
1471 | memzero(shm + mpos + n, msize - n); |
c2ab57d4 |
1472 | } |
1473 | return shmdt(shm); |
e5d73d77 |
1474 | #else |
463ee0b2 |
1475 | croak("shm I/O not implemented"); |
e5d73d77 |
1476 | #endif |
c2ab57d4 |
1477 | } |
1478 | |
fe14fcc3 |
1479 | #endif /* SYSV IPC */ |