1 |
#include "EXTERN.h" |
2 |
#include "perl.h" |
3 |
#include "XSUB.h" |
4 |
|
5 |
#include <fuse/fuse.h> |
6 |
|
7 |
#undef DEBUGf |
8 |
#if 0 |
9 |
#define DEBUGf(f, a...) fprintf(stderr, "%s:%d (%i): " f,__BASE_FILE__,__LINE__,PL_stack_sp-PL_stack_base ,##a ) |
10 |
#else |
11 |
#define DEBUGf(a...) |
12 |
#endif |
13 |
|
14 |
SV *_PLfuse_callbacks[18]; |
15 |
|
16 |
int _PLfuse_getattr(const char *file, struct stat *result) { |
17 |
dSP; |
18 |
int rv, statcount; |
19 |
ENTER; |
20 |
SAVETMPS; |
21 |
PUSHMARK(SP); |
22 |
XPUSHs(sv_2mortal(newSVpv(file,strlen(file)))); |
23 |
PUTBACK; |
24 |
rv = call_sv(_PLfuse_callbacks[0],G_ARRAY); |
25 |
SPAGAIN; |
26 |
if(rv != 13) { |
27 |
if(rv > 1) { |
28 |
fprintf(stderr,"inappropriate number of returned values from getattr\n"); |
29 |
rv = -ENOSYS; |
30 |
} else if(rv) |
31 |
rv = POPi; |
32 |
else |
33 |
rv = -ENOENT; |
34 |
} else { |
35 |
result->st_blocks = POPi; |
36 |
result->st_blksize = POPi; |
37 |
result->st_ctime = POPi; |
38 |
result->st_mtime = POPi; |
39 |
result->st_atime = POPi; |
40 |
result->st_size = POPi; |
41 |
result->st_rdev = POPi; |
42 |
result->st_gid = POPi; |
43 |
result->st_uid = POPi; |
44 |
result->st_nlink = POPi; |
45 |
result->st_mode = POPi; |
46 |
/*result->st_ino =*/ POPi; |
47 |
result->st_dev = POPi; |
48 |
rv = 0; |
49 |
} |
50 |
FREETMPS; |
51 |
LEAVE; |
52 |
PUTBACK; |
53 |
return rv; |
54 |
} |
55 |
|
56 |
int _PLfuse_readlink(const char *file,char *buf,size_t buflen) { |
57 |
int rv; |
58 |
char *rvstr; |
59 |
dSP; |
60 |
I32 ax; |
61 |
if(buflen < 1) |
62 |
return EINVAL; |
63 |
ENTER; |
64 |
SAVETMPS; |
65 |
PUSHMARK(SP); |
66 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
67 |
PUTBACK; |
68 |
rv = call_sv(_PLfuse_callbacks[1],G_SCALAR); |
69 |
SPAGAIN; |
70 |
if(!rv) |
71 |
rv = -ENOENT; |
72 |
else { |
73 |
SV *mysv = POPs; |
74 |
if(SvTYPE(mysv) == SVt_IV || SvTYPE(mysv) == SVt_NV) |
75 |
rv = SvIV(mysv); |
76 |
else { |
77 |
strncpy(buf,SvPV_nolen(mysv),buflen); |
78 |
rv = 0; |
79 |
} |
80 |
} |
81 |
FREETMPS; |
82 |
LEAVE; |
83 |
buf[buflen-1] = 0; |
84 |
PUTBACK; |
85 |
return rv; |
86 |
} |
87 |
|
88 |
int _PLfuse_getdir(const char *file, fuse_dirh_t dirh, fuse_dirfil_t dirfil) { |
89 |
int prv, rv; |
90 |
dSP; |
91 |
ENTER; |
92 |
SAVETMPS; |
93 |
PUSHMARK(SP); |
94 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
95 |
PUTBACK; |
96 |
prv = call_sv(_PLfuse_callbacks[2],G_ARRAY); |
97 |
SPAGAIN; |
98 |
if(prv) { |
99 |
rv = POPi; |
100 |
while(--prv) |
101 |
dirfil(dirh,POPp,0); |
102 |
} else { |
103 |
fprintf(stderr,"getdir() handler returned nothing!\n"); |
104 |
rv = -ENOSYS; |
105 |
} |
106 |
FREETMPS; |
107 |
LEAVE; |
108 |
PUTBACK; |
109 |
return rv; |
110 |
} |
111 |
|
112 |
int _PLfuse_mknod (const char *file, mode_t mode, dev_t dev) { |
113 |
int rv; |
114 |
SV *rvsv; |
115 |
char *rvstr; |
116 |
dSP; |
117 |
ENTER; |
118 |
SAVETMPS; |
119 |
PUSHMARK(SP); |
120 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
121 |
XPUSHs(sv_2mortal(newSViv(mode))); |
122 |
XPUSHs(sv_2mortal(newSViv(dev))); |
123 |
PUTBACK; |
124 |
rv = call_sv(_PLfuse_callbacks[3],G_SCALAR); |
125 |
SPAGAIN; |
126 |
if(rv) |
127 |
rv = POPi; |
128 |
else |
129 |
rv = 0; |
130 |
FREETMPS; |
131 |
LEAVE; |
132 |
PUTBACK; |
133 |
return rv; |
134 |
} |
135 |
|
136 |
int _PLfuse_mkdir (const char *file, mode_t mode) { |
137 |
int rv; |
138 |
SV *rvsv; |
139 |
char *rvstr; |
140 |
dSP; |
141 |
DEBUGf("mkdir begin: %i\n",sp-PL_stack_base); |
142 |
ENTER; |
143 |
SAVETMPS; |
144 |
PUSHMARK(SP); |
145 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
146 |
XPUSHs(sv_2mortal(newSViv(mode))); |
147 |
PUTBACK; |
148 |
rv = call_sv(_PLfuse_callbacks[4],G_SCALAR); |
149 |
SPAGAIN; |
150 |
if(rv) |
151 |
rv = POPi; |
152 |
else |
153 |
rv = 0; |
154 |
FREETMPS; |
155 |
LEAVE; |
156 |
PUTBACK; |
157 |
DEBUGf("mkdir end: %i %i\n",sp-PL_stack_base,rv); |
158 |
return rv; |
159 |
} |
160 |
|
161 |
|
162 |
int _PLfuse_unlink (const char *file) { |
163 |
int rv; |
164 |
SV *rvsv; |
165 |
char *rvstr; |
166 |
dSP; |
167 |
DEBUGf("unlink begin: %i\n",sp-PL_stack_base); |
168 |
ENTER; |
169 |
SAVETMPS; |
170 |
PUSHMARK(SP); |
171 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
172 |
PUTBACK; |
173 |
rv = call_sv(_PLfuse_callbacks[5],G_SCALAR); |
174 |
SPAGAIN; |
175 |
if(rv) |
176 |
rv = POPi; |
177 |
else |
178 |
rv = 0; |
179 |
FREETMPS; |
180 |
LEAVE; |
181 |
PUTBACK; |
182 |
DEBUGf("unlink end: %i\n",sp-PL_stack_base); |
183 |
return rv; |
184 |
} |
185 |
|
186 |
int _PLfuse_rmdir (const char *file) { |
187 |
int rv; |
188 |
SV *rvsv; |
189 |
char *rvstr; |
190 |
dSP; |
191 |
DEBUGf("rmdir begin: %i\n",sp-PL_stack_base); |
192 |
ENTER; |
193 |
SAVETMPS; |
194 |
PUSHMARK(SP); |
195 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
196 |
PUTBACK; |
197 |
rv = call_sv(_PLfuse_callbacks[6],G_SCALAR); |
198 |
SPAGAIN; |
199 |
if(rv) |
200 |
rv = POPi; |
201 |
else |
202 |
rv = 0; |
203 |
FREETMPS; |
204 |
LEAVE; |
205 |
PUTBACK; |
206 |
DEBUGf("rmdir end: %i %i\n",sp-PL_stack_base,rv); |
207 |
return rv; |
208 |
} |
209 |
|
210 |
int _PLfuse_symlink (const char *file, const char *new) { |
211 |
int rv; |
212 |
SV *rvsv; |
213 |
char *rvstr; |
214 |
dSP; |
215 |
DEBUGf("symlink begin: %i\n",sp-PL_stack_base); |
216 |
ENTER; |
217 |
SAVETMPS; |
218 |
PUSHMARK(SP); |
219 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
220 |
XPUSHs(sv_2mortal(newSVpv(new,0))); |
221 |
PUTBACK; |
222 |
rv = call_sv(_PLfuse_callbacks[7],G_SCALAR); |
223 |
SPAGAIN; |
224 |
if(rv) |
225 |
rv = POPi; |
226 |
else |
227 |
rv = 0; |
228 |
FREETMPS; |
229 |
LEAVE; |
230 |
PUTBACK; |
231 |
DEBUGf("symlink end: %i\n",sp-PL_stack_base); |
232 |
return rv; |
233 |
} |
234 |
|
235 |
int _PLfuse_rename (const char *file, const char *new) { |
236 |
int rv; |
237 |
SV *rvsv; |
238 |
char *rvstr; |
239 |
dSP; |
240 |
DEBUGf("rename begin: %i\n",sp-PL_stack_base); |
241 |
ENTER; |
242 |
SAVETMPS; |
243 |
PUSHMARK(SP); |
244 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
245 |
XPUSHs(sv_2mortal(newSVpv(new,0))); |
246 |
PUTBACK; |
247 |
rv = call_sv(_PLfuse_callbacks[8],G_SCALAR); |
248 |
SPAGAIN; |
249 |
if(rv) |
250 |
rv = POPi; |
251 |
else |
252 |
rv = 0; |
253 |
FREETMPS; |
254 |
LEAVE; |
255 |
PUTBACK; |
256 |
DEBUGf("rename end: %i\n",sp-PL_stack_base); |
257 |
return rv; |
258 |
} |
259 |
|
260 |
int _PLfuse_link (const char *file, const char *new) { |
261 |
int rv; |
262 |
SV *rvsv; |
263 |
char *rvstr; |
264 |
dSP; |
265 |
DEBUGf("link begin: %i\n",sp-PL_stack_base); |
266 |
ENTER; |
267 |
SAVETMPS; |
268 |
PUSHMARK(SP); |
269 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
270 |
XPUSHs(sv_2mortal(newSVpv(new,0))); |
271 |
PUTBACK; |
272 |
rv = call_sv(_PLfuse_callbacks[9],G_SCALAR); |
273 |
SPAGAIN; |
274 |
if(rv) |
275 |
rv = POPi; |
276 |
else |
277 |
rv = 0; |
278 |
FREETMPS; |
279 |
LEAVE; |
280 |
PUTBACK; |
281 |
DEBUGf("link end: %i\n",sp-PL_stack_base); |
282 |
return rv; |
283 |
} |
284 |
|
285 |
int _PLfuse_chmod (const char *file, mode_t mode) { |
286 |
int rv; |
287 |
SV *rvsv; |
288 |
char *rvstr; |
289 |
dSP; |
290 |
DEBUGf("chmod begin: %i\n",sp-PL_stack_base); |
291 |
ENTER; |
292 |
SAVETMPS; |
293 |
PUSHMARK(SP); |
294 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
295 |
XPUSHs(sv_2mortal(newSViv(mode))); |
296 |
PUTBACK; |
297 |
rv = call_sv(_PLfuse_callbacks[10],G_SCALAR); |
298 |
SPAGAIN; |
299 |
if(rv) |
300 |
rv = POPi; |
301 |
else |
302 |
rv = 0; |
303 |
FREETMPS; |
304 |
LEAVE; |
305 |
PUTBACK; |
306 |
DEBUGf("chmod end: %i\n",sp-PL_stack_base); |
307 |
return rv; |
308 |
} |
309 |
|
310 |
int _PLfuse_chown (const char *file, uid_t uid, gid_t gid) { |
311 |
int rv; |
312 |
SV *rvsv; |
313 |
char *rvstr; |
314 |
dSP; |
315 |
DEBUGf("chown begin: %i\n",sp-PL_stack_base); |
316 |
ENTER; |
317 |
SAVETMPS; |
318 |
PUSHMARK(SP); |
319 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
320 |
XPUSHs(sv_2mortal(newSViv(uid))); |
321 |
XPUSHs(sv_2mortal(newSViv(gid))); |
322 |
PUTBACK; |
323 |
rv = call_sv(_PLfuse_callbacks[11],G_SCALAR); |
324 |
SPAGAIN; |
325 |
if(rv) |
326 |
rv = POPi; |
327 |
else |
328 |
rv = 0; |
329 |
FREETMPS; |
330 |
LEAVE; |
331 |
PUTBACK; |
332 |
DEBUGf("chown end: %i\n",sp-PL_stack_base); |
333 |
return rv; |
334 |
} |
335 |
|
336 |
int _PLfuse_truncate (const char *file, off_t off) { |
337 |
int rv; |
338 |
SV *rvsv; |
339 |
char *rvstr; |
340 |
dSP; |
341 |
DEBUGf("truncate begin: %i\n",sp-PL_stack_base); |
342 |
ENTER; |
343 |
SAVETMPS; |
344 |
PUSHMARK(SP); |
345 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
346 |
XPUSHs(sv_2mortal(newSViv(off))); |
347 |
PUTBACK; |
348 |
rv = call_sv(_PLfuse_callbacks[12],G_SCALAR); |
349 |
SPAGAIN; |
350 |
if(rv) |
351 |
rv = POPi; |
352 |
else |
353 |
rv = 0; |
354 |
FREETMPS; |
355 |
LEAVE; |
356 |
PUTBACK; |
357 |
DEBUGf("truncate end: %i\n",sp-PL_stack_base); |
358 |
return rv; |
359 |
} |
360 |
|
361 |
int _PLfuse_utime (const char *file, struct utimbuf *uti) { |
362 |
int rv; |
363 |
SV *rvsv; |
364 |
char *rvstr; |
365 |
dSP; |
366 |
DEBUGf("utime begin: %i\n",sp-PL_stack_base); |
367 |
ENTER; |
368 |
SAVETMPS; |
369 |
PUSHMARK(SP); |
370 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
371 |
XPUSHs(sv_2mortal(newSViv(uti->actime))); |
372 |
XPUSHs(sv_2mortal(newSViv(uti->modtime))); |
373 |
PUTBACK; |
374 |
rv = call_sv(_PLfuse_callbacks[13],G_SCALAR); |
375 |
SPAGAIN; |
376 |
if(rv) |
377 |
rv = POPi; |
378 |
else |
379 |
rv = 0; |
380 |
FREETMPS; |
381 |
LEAVE; |
382 |
PUTBACK; |
383 |
DEBUGf("utime end: %i\n",sp-PL_stack_base); |
384 |
return rv; |
385 |
} |
386 |
|
387 |
int _PLfuse_open (const char *file, int flags) { |
388 |
int rv; |
389 |
SV *rvsv; |
390 |
char *rvstr; |
391 |
dSP; |
392 |
DEBUGf("open begin: %i\n",sp-PL_stack_base); |
393 |
ENTER; |
394 |
SAVETMPS; |
395 |
PUSHMARK(SP); |
396 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
397 |
XPUSHs(sv_2mortal(newSViv(flags))); |
398 |
PUTBACK; |
399 |
rv = call_sv(_PLfuse_callbacks[14],G_SCALAR); |
400 |
SPAGAIN; |
401 |
if(rv) |
402 |
rv = POPi; |
403 |
else |
404 |
rv = 0; |
405 |
FREETMPS; |
406 |
LEAVE; |
407 |
PUTBACK; |
408 |
DEBUGf("open end: %i %i\n",sp-PL_stack_base,rv); |
409 |
return rv; |
410 |
} |
411 |
|
412 |
int _PLfuse_read (const char *file, char *buf, size_t buflen, off_t off) { |
413 |
int rv; |
414 |
char *rvstr; |
415 |
dSP; |
416 |
DEBUGf("read begin: %i\n",sp-PL_stack_base); |
417 |
ENTER; |
418 |
SAVETMPS; |
419 |
PUSHMARK(SP); |
420 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
421 |
XPUSHs(sv_2mortal(newSViv(buflen))); |
422 |
XPUSHs(sv_2mortal(newSViv(off))); |
423 |
PUTBACK; |
424 |
rv = call_sv(_PLfuse_callbacks[15],G_SCALAR); |
425 |
SPAGAIN; |
426 |
if(!rv) |
427 |
rv = -ENOENT; |
428 |
else { |
429 |
SV *mysv = POPs; |
430 |
if(SvTYPE(mysv) == SVt_NV || SvTYPE(mysv) == SVt_IV) |
431 |
rv = SvIV(mysv); |
432 |
else { |
433 |
if(SvPOK(mysv)) { |
434 |
rv = SvCUR(mysv); |
435 |
} else { |
436 |
rv = 0; |
437 |
} |
438 |
if(rv > buflen) |
439 |
croak("read() handler returned more than buflen! (%i > %i)",rv,buflen); |
440 |
if(rv) |
441 |
memcpy(buf,SvPV_nolen(mysv),rv); |
442 |
} |
443 |
} |
444 |
FREETMPS; |
445 |
LEAVE; |
446 |
PUTBACK; |
447 |
DEBUGf("read end: %i %i\n",sp-PL_stack_base,rv); |
448 |
return rv; |
449 |
} |
450 |
|
451 |
int _PLfuse_write (const char *file, const char *buf, size_t buflen, off_t off) { |
452 |
int rv; |
453 |
char *rvstr; |
454 |
dSP; |
455 |
DEBUGf("write begin: %i\n",sp-PL_stack_base); |
456 |
ENTER; |
457 |
SAVETMPS; |
458 |
PUSHMARK(SP); |
459 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
460 |
XPUSHs(sv_2mortal(newSVpvn(buf,buflen))); |
461 |
XPUSHs(sv_2mortal(newSViv(off))); |
462 |
PUTBACK; |
463 |
rv = call_sv(_PLfuse_callbacks[16],G_SCALAR); |
464 |
SPAGAIN; |
465 |
if(rv) |
466 |
rv = POPi; |
467 |
else |
468 |
rv = 0; |
469 |
FREETMPS; |
470 |
LEAVE; |
471 |
PUTBACK; |
472 |
DEBUGf("write end: %i\n",sp-PL_stack_base); |
473 |
return rv; |
474 |
} |
475 |
|
476 |
int _PLfuse_statfs (const char *file, struct statfs *st) { |
477 |
int rv; |
478 |
char *rvstr; |
479 |
dSP; |
480 |
DEBUGf("statfs begin: %i\n",sp-PL_stack_base); |
481 |
ENTER; |
482 |
SAVETMPS; |
483 |
PUSHMARK(SP); |
484 |
PUTBACK; |
485 |
rv = call_sv(_PLfuse_callbacks[17],G_ARRAY); |
486 |
SPAGAIN; |
487 |
if(rv > 5) { |
488 |
st->f_bsize = POPi; |
489 |
st->f_bfree = POPi; |
490 |
st->f_blocks = POPi; |
491 |
st->f_ffree = POPi; |
492 |
st->f_files = POPi; |
493 |
st->f_namelen = POPi; |
494 |
if(rv > 6) |
495 |
rv = POPi; |
496 |
else |
497 |
rv = 0; |
498 |
} else |
499 |
if(rv > 1) |
500 |
croak("inappropriate number of returned values from statfs"); |
501 |
else |
502 |
if(rv) |
503 |
rv = POPi; |
504 |
else |
505 |
rv = -ENOSYS; |
506 |
FREETMPS; |
507 |
LEAVE; |
508 |
PUTBACK; |
509 |
DEBUGf("statfs end: %i\n",sp-PL_stack_base); |
510 |
return rv; |
511 |
} |
512 |
|
513 |
struct fuse_operations _available_ops = { |
514 |
getattr: _PLfuse_getattr, |
515 |
_PLfuse_readlink, |
516 |
_PLfuse_getdir, |
517 |
_PLfuse_mknod, |
518 |
_PLfuse_mkdir, |
519 |
_PLfuse_unlink, |
520 |
_PLfuse_rmdir, |
521 |
_PLfuse_symlink, |
522 |
_PLfuse_rename, |
523 |
_PLfuse_link, |
524 |
_PLfuse_chmod, |
525 |
_PLfuse_chown, |
526 |
_PLfuse_truncate, |
527 |
_PLfuse_utime, |
528 |
_PLfuse_open, |
529 |
_PLfuse_read, |
530 |
_PLfuse_write, |
531 |
_PLfuse_statfs |
532 |
}; |
533 |
|
534 |
MODULE = Fuse PACKAGE = Fuse |
535 |
PROTOTYPES: DISABLE |
536 |
|
537 |
void |
538 |
perl_fuse_main(...) |
539 |
PREINIT: |
540 |
struct fuse_operations fops = {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL}; |
541 |
int i, fd, varnum = 0, debug, have_mnt; |
542 |
char *mountpoint; |
543 |
STRLEN n_a; |
544 |
STRLEN l; |
545 |
INIT: |
546 |
if(items != 20) { |
547 |
fprintf(stderr,"Perl<->C inconsistency or internal error\n"); |
548 |
XSRETURN_UNDEF; |
549 |
} |
550 |
CODE: |
551 |
debug = SvIV(ST(0)); |
552 |
mountpoint = SvPV_nolen(ST(1)); |
553 |
/* FIXME: reevaluate multithreading support when perl6 arrives */ |
554 |
for(i=0;i<18;i++) { |
555 |
SV *var = ST(i+2); |
556 |
if((var != &PL_sv_undef) && SvROK(var)) { |
557 |
if(SvTYPE(SvRV(var)) == SVt_PVCV) { |
558 |
void **tmp1 = (void**)&_available_ops, **tmp2 = (void**)&fops; |
559 |
tmp2[i] = tmp1[i]; |
560 |
_PLfuse_callbacks[i] = var; |
561 |
} else |
562 |
croak("arg is not a code reference!"); |
563 |
} |
564 |
} |
565 |
/* FIXME: need to pass fusermount arguments */ |
566 |
fd = fuse_mount(mountpoint,NULL); |
567 |
if(fd < 0) |
568 |
croak("could not mount fuse filesystem!"); |
569 |
fuse_loop(fuse_new(fd,debug ? "debug" : NULL,&fops)); |