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_blksize = POPi; |
36 |
result->st_ctime = POPi; |
37 |
result->st_mtime = POPi; |
38 |
result->st_atime = POPi; |
39 |
/* What the HELL? Perl says the blockcount is the last argument. |
40 |
* Everything else says the blockcount is the last argument. So why |
41 |
* was it folded into the middle of the list? */ |
42 |
result->st_blocks = POPi; |
43 |
result->st_size = POPi; |
44 |
result->st_rdev = POPi; |
45 |
result->st_gid = POPi; |
46 |
result->st_uid = POPi; |
47 |
result->st_nlink = POPi; |
48 |
result->st_mode = POPi; |
49 |
/*result->st_ino =*/ POPi; |
50 |
result->st_dev = POPi; |
51 |
rv = 0; |
52 |
} |
53 |
FREETMPS; |
54 |
LEAVE; |
55 |
PUTBACK; |
56 |
return rv; |
57 |
} |
58 |
|
59 |
int _PLfuse_readlink(const char *file,char *buf,size_t buflen) { |
60 |
int rv; |
61 |
char *rvstr; |
62 |
dSP; |
63 |
I32 ax; |
64 |
if(buflen < 1) |
65 |
return EINVAL; |
66 |
ENTER; |
67 |
SAVETMPS; |
68 |
PUSHMARK(SP); |
69 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
70 |
PUTBACK; |
71 |
rv = call_sv(_PLfuse_callbacks[1],G_SCALAR); |
72 |
SPAGAIN; |
73 |
if(!rv) |
74 |
rv = -ENOENT; |
75 |
else { |
76 |
SV *mysv = POPs; |
77 |
if(SvTYPE(mysv) == SVt_IV || SvTYPE(mysv) == SVt_NV) |
78 |
rv = SvIV(mysv); |
79 |
else { |
80 |
strncpy(buf,SvPV_nolen(mysv),buflen); |
81 |
rv = 0; |
82 |
} |
83 |
} |
84 |
FREETMPS; |
85 |
LEAVE; |
86 |
buf[buflen-1] = 0; |
87 |
PUTBACK; |
88 |
return rv; |
89 |
} |
90 |
|
91 |
int _PLfuse_getdir(const char *file, fuse_dirh_t dirh, fuse_dirfil_t dirfil) { |
92 |
int prv, rv; |
93 |
dSP; |
94 |
ENTER; |
95 |
SAVETMPS; |
96 |
PUSHMARK(SP); |
97 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
98 |
PUTBACK; |
99 |
prv = call_sv(_PLfuse_callbacks[2],G_ARRAY); |
100 |
SPAGAIN; |
101 |
if(prv) { |
102 |
rv = POPi; |
103 |
while(--prv) |
104 |
dirfil(dirh,POPp,0,0); |
105 |
} else { |
106 |
fprintf(stderr,"getdir() handler returned nothing!\n"); |
107 |
rv = -ENOSYS; |
108 |
} |
109 |
FREETMPS; |
110 |
LEAVE; |
111 |
PUTBACK; |
112 |
return rv; |
113 |
} |
114 |
|
115 |
int _PLfuse_mknod (const char *file, mode_t mode, dev_t dev) { |
116 |
int rv; |
117 |
SV *rvsv; |
118 |
char *rvstr; |
119 |
dSP; |
120 |
ENTER; |
121 |
SAVETMPS; |
122 |
PUSHMARK(SP); |
123 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
124 |
XPUSHs(sv_2mortal(newSViv(mode))); |
125 |
XPUSHs(sv_2mortal(newSViv(dev))); |
126 |
PUTBACK; |
127 |
rv = call_sv(_PLfuse_callbacks[3],G_SCALAR); |
128 |
SPAGAIN; |
129 |
if(rv) |
130 |
rv = POPi; |
131 |
else |
132 |
rv = 0; |
133 |
FREETMPS; |
134 |
LEAVE; |
135 |
PUTBACK; |
136 |
return rv; |
137 |
} |
138 |
|
139 |
int _PLfuse_mkdir (const char *file, mode_t mode) { |
140 |
int rv; |
141 |
SV *rvsv; |
142 |
char *rvstr; |
143 |
dSP; |
144 |
DEBUGf("mkdir begin: %i\n",sp-PL_stack_base); |
145 |
ENTER; |
146 |
SAVETMPS; |
147 |
PUSHMARK(SP); |
148 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
149 |
XPUSHs(sv_2mortal(newSViv(mode))); |
150 |
PUTBACK; |
151 |
rv = call_sv(_PLfuse_callbacks[4],G_SCALAR); |
152 |
SPAGAIN; |
153 |
if(rv) |
154 |
rv = POPi; |
155 |
else |
156 |
rv = 0; |
157 |
FREETMPS; |
158 |
LEAVE; |
159 |
PUTBACK; |
160 |
DEBUGf("mkdir end: %i %i\n",sp-PL_stack_base,rv); |
161 |
return rv; |
162 |
} |
163 |
|
164 |
|
165 |
int _PLfuse_unlink (const char *file) { |
166 |
int rv; |
167 |
SV *rvsv; |
168 |
char *rvstr; |
169 |
dSP; |
170 |
DEBUGf("unlink begin: %i\n",sp-PL_stack_base); |
171 |
ENTER; |
172 |
SAVETMPS; |
173 |
PUSHMARK(SP); |
174 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
175 |
PUTBACK; |
176 |
rv = call_sv(_PLfuse_callbacks[5],G_SCALAR); |
177 |
SPAGAIN; |
178 |
if(rv) |
179 |
rv = POPi; |
180 |
else |
181 |
rv = 0; |
182 |
FREETMPS; |
183 |
LEAVE; |
184 |
PUTBACK; |
185 |
DEBUGf("unlink end: %i\n",sp-PL_stack_base); |
186 |
return rv; |
187 |
} |
188 |
|
189 |
int _PLfuse_rmdir (const char *file) { |
190 |
int rv; |
191 |
SV *rvsv; |
192 |
char *rvstr; |
193 |
dSP; |
194 |
DEBUGf("rmdir begin: %i\n",sp-PL_stack_base); |
195 |
ENTER; |
196 |
SAVETMPS; |
197 |
PUSHMARK(SP); |
198 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
199 |
PUTBACK; |
200 |
rv = call_sv(_PLfuse_callbacks[6],G_SCALAR); |
201 |
SPAGAIN; |
202 |
if(rv) |
203 |
rv = POPi; |
204 |
else |
205 |
rv = 0; |
206 |
FREETMPS; |
207 |
LEAVE; |
208 |
PUTBACK; |
209 |
DEBUGf("rmdir end: %i %i\n",sp-PL_stack_base,rv); |
210 |
return rv; |
211 |
} |
212 |
|
213 |
int _PLfuse_symlink (const char *file, const char *new) { |
214 |
int rv; |
215 |
SV *rvsv; |
216 |
char *rvstr; |
217 |
dSP; |
218 |
DEBUGf("symlink begin: %i\n",sp-PL_stack_base); |
219 |
ENTER; |
220 |
SAVETMPS; |
221 |
PUSHMARK(SP); |
222 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
223 |
XPUSHs(sv_2mortal(newSVpv(new,0))); |
224 |
PUTBACK; |
225 |
rv = call_sv(_PLfuse_callbacks[7],G_SCALAR); |
226 |
SPAGAIN; |
227 |
if(rv) |
228 |
rv = POPi; |
229 |
else |
230 |
rv = 0; |
231 |
FREETMPS; |
232 |
LEAVE; |
233 |
PUTBACK; |
234 |
DEBUGf("symlink end: %i\n",sp-PL_stack_base); |
235 |
return rv; |
236 |
} |
237 |
|
238 |
int _PLfuse_rename (const char *file, const char *new) { |
239 |
int rv; |
240 |
SV *rvsv; |
241 |
char *rvstr; |
242 |
dSP; |
243 |
DEBUGf("rename begin: %i\n",sp-PL_stack_base); |
244 |
ENTER; |
245 |
SAVETMPS; |
246 |
PUSHMARK(SP); |
247 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
248 |
XPUSHs(sv_2mortal(newSVpv(new,0))); |
249 |
PUTBACK; |
250 |
rv = call_sv(_PLfuse_callbacks[8],G_SCALAR); |
251 |
SPAGAIN; |
252 |
if(rv) |
253 |
rv = POPi; |
254 |
else |
255 |
rv = 0; |
256 |
FREETMPS; |
257 |
LEAVE; |
258 |
PUTBACK; |
259 |
DEBUGf("rename end: %i\n",sp-PL_stack_base); |
260 |
return rv; |
261 |
} |
262 |
|
263 |
int _PLfuse_link (const char *file, const char *new) { |
264 |
int rv; |
265 |
SV *rvsv; |
266 |
char *rvstr; |
267 |
dSP; |
268 |
DEBUGf("link begin: %i\n",sp-PL_stack_base); |
269 |
ENTER; |
270 |
SAVETMPS; |
271 |
PUSHMARK(SP); |
272 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
273 |
XPUSHs(sv_2mortal(newSVpv(new,0))); |
274 |
PUTBACK; |
275 |
rv = call_sv(_PLfuse_callbacks[9],G_SCALAR); |
276 |
SPAGAIN; |
277 |
if(rv) |
278 |
rv = POPi; |
279 |
else |
280 |
rv = 0; |
281 |
FREETMPS; |
282 |
LEAVE; |
283 |
PUTBACK; |
284 |
DEBUGf("link end: %i\n",sp-PL_stack_base); |
285 |
return rv; |
286 |
} |
287 |
|
288 |
int _PLfuse_chmod (const char *file, mode_t mode) { |
289 |
int rv; |
290 |
SV *rvsv; |
291 |
char *rvstr; |
292 |
dSP; |
293 |
DEBUGf("chmod begin: %i\n",sp-PL_stack_base); |
294 |
ENTER; |
295 |
SAVETMPS; |
296 |
PUSHMARK(SP); |
297 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
298 |
XPUSHs(sv_2mortal(newSViv(mode))); |
299 |
PUTBACK; |
300 |
rv = call_sv(_PLfuse_callbacks[10],G_SCALAR); |
301 |
SPAGAIN; |
302 |
if(rv) |
303 |
rv = POPi; |
304 |
else |
305 |
rv = 0; |
306 |
FREETMPS; |
307 |
LEAVE; |
308 |
PUTBACK; |
309 |
DEBUGf("chmod end: %i\n",sp-PL_stack_base); |
310 |
return rv; |
311 |
} |
312 |
|
313 |
int _PLfuse_chown (const char *file, uid_t uid, gid_t gid) { |
314 |
int rv; |
315 |
SV *rvsv; |
316 |
char *rvstr; |
317 |
dSP; |
318 |
DEBUGf("chown begin: %i\n",sp-PL_stack_base); |
319 |
ENTER; |
320 |
SAVETMPS; |
321 |
PUSHMARK(SP); |
322 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
323 |
XPUSHs(sv_2mortal(newSViv(uid))); |
324 |
XPUSHs(sv_2mortal(newSViv(gid))); |
325 |
PUTBACK; |
326 |
rv = call_sv(_PLfuse_callbacks[11],G_SCALAR); |
327 |
SPAGAIN; |
328 |
if(rv) |
329 |
rv = POPi; |
330 |
else |
331 |
rv = 0; |
332 |
FREETMPS; |
333 |
LEAVE; |
334 |
PUTBACK; |
335 |
DEBUGf("chown end: %i\n",sp-PL_stack_base); |
336 |
return rv; |
337 |
} |
338 |
|
339 |
int _PLfuse_truncate (const char *file, off_t off) { |
340 |
int rv; |
341 |
SV *rvsv; |
342 |
char *rvstr; |
343 |
dSP; |
344 |
DEBUGf("truncate begin: %i\n",sp-PL_stack_base); |
345 |
ENTER; |
346 |
SAVETMPS; |
347 |
PUSHMARK(SP); |
348 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
349 |
XPUSHs(sv_2mortal(newSViv(off))); |
350 |
PUTBACK; |
351 |
rv = call_sv(_PLfuse_callbacks[12],G_SCALAR); |
352 |
SPAGAIN; |
353 |
if(rv) |
354 |
rv = POPi; |
355 |
else |
356 |
rv = 0; |
357 |
FREETMPS; |
358 |
LEAVE; |
359 |
PUTBACK; |
360 |
DEBUGf("truncate end: %i\n",sp-PL_stack_base); |
361 |
return rv; |
362 |
} |
363 |
|
364 |
int _PLfuse_utime (const char *file, struct utimbuf *uti) { |
365 |
int rv; |
366 |
SV *rvsv; |
367 |
char *rvstr; |
368 |
dSP; |
369 |
DEBUGf("utime begin: %i\n",sp-PL_stack_base); |
370 |
ENTER; |
371 |
SAVETMPS; |
372 |
PUSHMARK(SP); |
373 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
374 |
XPUSHs(sv_2mortal(newSViv(uti->actime))); |
375 |
XPUSHs(sv_2mortal(newSViv(uti->modtime))); |
376 |
PUTBACK; |
377 |
rv = call_sv(_PLfuse_callbacks[13],G_SCALAR); |
378 |
SPAGAIN; |
379 |
if(rv) |
380 |
rv = POPi; |
381 |
else |
382 |
rv = 0; |
383 |
FREETMPS; |
384 |
LEAVE; |
385 |
PUTBACK; |
386 |
DEBUGf("utime end: %i\n",sp-PL_stack_base); |
387 |
return rv; |
388 |
} |
389 |
|
390 |
int _PLfuse_open (const char *file, int flags) { |
391 |
int rv; |
392 |
SV *rvsv; |
393 |
char *rvstr; |
394 |
dSP; |
395 |
DEBUGf("open begin: %i\n",sp-PL_stack_base); |
396 |
ENTER; |
397 |
SAVETMPS; |
398 |
PUSHMARK(SP); |
399 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
400 |
XPUSHs(sv_2mortal(newSViv(flags))); |
401 |
PUTBACK; |
402 |
rv = call_sv(_PLfuse_callbacks[14],G_SCALAR); |
403 |
SPAGAIN; |
404 |
if(rv) |
405 |
rv = POPi; |
406 |
else |
407 |
rv = 0; |
408 |
FREETMPS; |
409 |
LEAVE; |
410 |
PUTBACK; |
411 |
DEBUGf("open end: %i %i\n",sp-PL_stack_base,rv); |
412 |
return rv; |
413 |
} |
414 |
|
415 |
int _PLfuse_read (const char *file, char *buf, size_t buflen, off_t off) { |
416 |
int rv; |
417 |
char *rvstr; |
418 |
dSP; |
419 |
DEBUGf("read begin: %i\n",sp-PL_stack_base); |
420 |
ENTER; |
421 |
SAVETMPS; |
422 |
PUSHMARK(SP); |
423 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
424 |
XPUSHs(sv_2mortal(newSViv(buflen))); |
425 |
XPUSHs(sv_2mortal(newSViv(off))); |
426 |
PUTBACK; |
427 |
rv = call_sv(_PLfuse_callbacks[15],G_SCALAR); |
428 |
SPAGAIN; |
429 |
if(!rv) |
430 |
rv = -ENOENT; |
431 |
else { |
432 |
SV *mysv = POPs; |
433 |
if(SvTYPE(mysv) == SVt_NV || SvTYPE(mysv) == SVt_IV) |
434 |
rv = SvIV(mysv); |
435 |
else { |
436 |
if(SvPOK(mysv)) { |
437 |
rv = SvCUR(mysv); |
438 |
} else { |
439 |
rv = 0; |
440 |
} |
441 |
if(rv > buflen) |
442 |
croak("read() handler returned more than buflen! (%i > %i)",rv,buflen); |
443 |
if(rv) |
444 |
memcpy(buf,SvPV_nolen(mysv),rv); |
445 |
} |
446 |
} |
447 |
FREETMPS; |
448 |
LEAVE; |
449 |
PUTBACK; |
450 |
DEBUGf("read end: %i %i\n",sp-PL_stack_base,rv); |
451 |
return rv; |
452 |
} |
453 |
|
454 |
int _PLfuse_write (const char *file, const char *buf, size_t buflen, off_t off) { |
455 |
int rv; |
456 |
char *rvstr; |
457 |
dSP; |
458 |
DEBUGf("write begin: %i\n",sp-PL_stack_base); |
459 |
ENTER; |
460 |
SAVETMPS; |
461 |
PUSHMARK(SP); |
462 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
463 |
XPUSHs(sv_2mortal(newSVpvn(buf,buflen))); |
464 |
XPUSHs(sv_2mortal(newSViv(off))); |
465 |
PUTBACK; |
466 |
rv = call_sv(_PLfuse_callbacks[16],G_SCALAR); |
467 |
SPAGAIN; |
468 |
if(rv) |
469 |
rv = POPi; |
470 |
else |
471 |
rv = 0; |
472 |
FREETMPS; |
473 |
LEAVE; |
474 |
PUTBACK; |
475 |
DEBUGf("write end: %i\n",sp-PL_stack_base); |
476 |
return rv; |
477 |
} |
478 |
|
479 |
int _PLfuse_statfs (const char *file, struct statfs *st) { |
480 |
int rv; |
481 |
char *rvstr; |
482 |
dSP; |
483 |
DEBUGf("statfs begin: %i\n",sp-PL_stack_base); |
484 |
ENTER; |
485 |
SAVETMPS; |
486 |
PUSHMARK(SP); |
487 |
PUTBACK; |
488 |
rv = call_sv(_PLfuse_callbacks[17],G_ARRAY); |
489 |
SPAGAIN; |
490 |
if(rv > 5) { |
491 |
st->f_bsize = POPi; |
492 |
st->f_bfree = POPi; |
493 |
st->f_blocks = POPi; |
494 |
st->f_ffree = POPi; |
495 |
st->f_files = POPi; |
496 |
st->f_namelen = POPi; |
497 |
if(rv > 6) |
498 |
rv = POPi; |
499 |
else |
500 |
rv = 0; |
501 |
} else |
502 |
if(rv > 1) |
503 |
croak("inappropriate number of returned values from statfs"); |
504 |
else |
505 |
if(rv) |
506 |
rv = POPi; |
507 |
else |
508 |
rv = -ENOSYS; |
509 |
FREETMPS; |
510 |
LEAVE; |
511 |
PUTBACK; |
512 |
DEBUGf("statfs end: %i\n",sp-PL_stack_base); |
513 |
return rv; |
514 |
} |
515 |
|
516 |
struct fuse_operations _available_ops = { |
517 |
getattr: _PLfuse_getattr, |
518 |
_PLfuse_readlink, |
519 |
_PLfuse_getdir, |
520 |
_PLfuse_mknod, |
521 |
_PLfuse_mkdir, |
522 |
_PLfuse_unlink, |
523 |
_PLfuse_rmdir, |
524 |
_PLfuse_symlink, |
525 |
_PLfuse_rename, |
526 |
_PLfuse_link, |
527 |
_PLfuse_chmod, |
528 |
_PLfuse_chown, |
529 |
_PLfuse_truncate, |
530 |
_PLfuse_utime, |
531 |
_PLfuse_open, |
532 |
_PLfuse_read, |
533 |
_PLfuse_write, |
534 |
_PLfuse_statfs |
535 |
}; |
536 |
|
537 |
MODULE = Fuse PACKAGE = Fuse |
538 |
PROTOTYPES: DISABLE |
539 |
|
540 |
void |
541 |
perl_fuse_main(...) |
542 |
PREINIT: |
543 |
struct fuse_operations fops = {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL}; |
544 |
int i, fd, varnum = 0, debug, have_mnt; |
545 |
char *mountpoint; |
546 |
STRLEN n_a; |
547 |
STRLEN l; |
548 |
INIT: |
549 |
if(items != 20) { |
550 |
fprintf(stderr,"Perl<->C inconsistency or internal error\n"); |
551 |
XSRETURN_UNDEF; |
552 |
} |
553 |
CODE: |
554 |
debug = SvIV(ST(0)); |
555 |
mountpoint = SvPV_nolen(ST(1)); |
556 |
/* FIXME: reevaluate multithreading support when perl6 arrives */ |
557 |
for(i=0;i<18;i++) { |
558 |
SV *var = ST(i+2); |
559 |
if((var != &PL_sv_undef) && SvROK(var)) { |
560 |
if(SvTYPE(SvRV(var)) == SVt_PVCV) { |
561 |
void **tmp1 = (void**)&_available_ops, **tmp2 = (void**)&fops; |
562 |
tmp2[i] = tmp1[i]; |
563 |
_PLfuse_callbacks[i] = var; |
564 |
} else |
565 |
croak("arg is not a code reference!"); |
566 |
} |
567 |
} |
568 |
/* FIXME: need to pass fusermount arguments */ |
569 |
fd = fuse_mount(mountpoint,NULL); |
570 |
if(fd < 0) |
571 |
croak("could not mount fuse filesystem!"); |
572 |
fuse_loop(fuse_new(fd,debug ? "debug" : NULL,&fops)); |