1 |
#include "EXTERN.h" |
2 |
#include "perl.h" |
3 |
#include "XSUB.h" |
4 |
|
5 |
#ifdef USE_ITHREADS |
6 |
# ifdef I_PTHREAD |
7 |
/* perl implements threads with pthread. So, we use the pthread API for |
8 |
* handling thread-local storage. */ |
9 |
# include <pthread.h> |
10 |
PerlInterpreter *master_interp = NULL; |
11 |
static inline void create_perl_context() { |
12 |
if(master_interp) { |
13 |
PerlInterpreter *me = PERL_GET_CONTEXT; |
14 |
if(!me) { |
15 |
PERL_SET_CONTEXT(master_interp); |
16 |
me = perl_clone(master_interp, CLONEf_CLONE_HOST); |
17 |
} |
18 |
} |
19 |
} |
20 |
# define FUSE_CONTEXT_PRE create_perl_context(); { dSP |
21 |
# define FUSE_CONTEXT_POST } |
22 |
# define FUSE_USE_ITHREADS |
23 |
# else |
24 |
# error "Sorry, I don't know how to handle ithreads on this architecture." |
25 |
# endif |
26 |
#else |
27 |
# define FUSE_CONTEXT_PRE dSP |
28 |
# define FUSE_CONTEXT_POST |
29 |
#endif |
30 |
#include <fuse.h> |
31 |
|
32 |
#undef DEBUGf |
33 |
#if 0 |
34 |
#define DEBUGf(f, a...) fprintf(stderr, "%s:%d (%i): " f,__BASE_FILE__,__LINE__,sp-PL_stack_base ,##a ) |
35 |
#else |
36 |
#define DEBUGf(a...) |
37 |
#endif |
38 |
|
39 |
#define N_CALLBACKS 25 |
40 |
SV *_PLfuse_callbacks[N_CALLBACKS]; |
41 |
|
42 |
int _PLfuse_getattr(const char *file, struct stat *result) { |
43 |
int rv; |
44 |
FUSE_CONTEXT_PRE; |
45 |
DEBUGf("getattr begin: %s\n",file); |
46 |
ENTER; |
47 |
SAVETMPS; |
48 |
PUSHMARK(SP); |
49 |
XPUSHs(sv_2mortal(newSVpv(file,strlen(file)))); |
50 |
PUTBACK; |
51 |
rv = call_sv(_PLfuse_callbacks[0],G_ARRAY); |
52 |
SPAGAIN; |
53 |
if(rv != 13) { |
54 |
if(rv > 1) { |
55 |
fprintf(stderr,"inappropriate number of returned values from getattr\n"); |
56 |
rv = -ENOSYS; |
57 |
} else if(rv) |
58 |
rv = POPi; |
59 |
else |
60 |
rv = -ENOENT; |
61 |
} else { |
62 |
result->st_blocks = POPi; |
63 |
result->st_blksize = POPi; |
64 |
result->st_ctime = POPi; |
65 |
result->st_mtime = POPi; |
66 |
result->st_atime = POPi; |
67 |
result->st_size = POPi; |
68 |
result->st_rdev = POPi; |
69 |
result->st_gid = POPi; |
70 |
result->st_uid = POPi; |
71 |
result->st_nlink = POPi; |
72 |
result->st_mode = POPi; |
73 |
result->st_ino = POPi; |
74 |
result->st_dev = POPi; |
75 |
rv = 0; |
76 |
} |
77 |
FREETMPS; |
78 |
LEAVE; |
79 |
PUTBACK; |
80 |
DEBUGf("getattr end: %i\n",rv); |
81 |
FUSE_CONTEXT_POST; |
82 |
return rv; |
83 |
} |
84 |
|
85 |
int _PLfuse_readlink(const char *file,char *buf,size_t buflen) { |
86 |
int rv; |
87 |
FUSE_CONTEXT_PRE; |
88 |
if(buflen < 1) |
89 |
return EINVAL; |
90 |
DEBUGf("readlink begin\n"); |
91 |
ENTER; |
92 |
SAVETMPS; |
93 |
PUSHMARK(SP); |
94 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
95 |
PUTBACK; |
96 |
rv = call_sv(_PLfuse_callbacks[1],G_SCALAR); |
97 |
SPAGAIN; |
98 |
if(!rv) |
99 |
rv = -ENOENT; |
100 |
else { |
101 |
SV *mysv = POPs; |
102 |
if(SvTYPE(mysv) == SVt_IV || SvTYPE(mysv) == SVt_NV) |
103 |
rv = SvIV(mysv); |
104 |
else { |
105 |
strncpy(buf,SvPV_nolen(mysv),buflen); |
106 |
rv = 0; |
107 |
} |
108 |
} |
109 |
FREETMPS; |
110 |
LEAVE; |
111 |
buf[buflen-1] = 0; |
112 |
PUTBACK; |
113 |
DEBUGf("readlink end: %i\n",rv); |
114 |
FUSE_CONTEXT_POST; |
115 |
return rv; |
116 |
} |
117 |
|
118 |
#if 0 |
119 |
/* |
120 |
* This doesn't yet work... we alwas get ENOSYS when trying to use readdir(). |
121 |
* Well, of course, getdir() is fine as well. |
122 |
*/ |
123 |
int _PLfuse_readdir(const char *file, void *dirh, fuse_fill_dir_t dirfil, off_t off, struct fuse_file_info *fi) { |
124 |
#endif |
125 |
int _PLfuse_getdir(const char *file, fuse_dirh_t dirh, fuse_dirfil_t dirfil) { |
126 |
int prv, rv; |
127 |
FUSE_CONTEXT_PRE; |
128 |
DEBUGf("getdir begin\n"); |
129 |
ENTER; |
130 |
SAVETMPS; |
131 |
PUSHMARK(SP); |
132 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
133 |
PUTBACK; |
134 |
prv = call_sv(_PLfuse_callbacks[2],G_ARRAY); |
135 |
SPAGAIN; |
136 |
if(prv) { |
137 |
rv = POPi; |
138 |
while(--prv) |
139 |
dirfil(dirh,POPp,0,0); |
140 |
} else { |
141 |
fprintf(stderr,"getdir() handler returned nothing!\n"); |
142 |
rv = -ENOSYS; |
143 |
} |
144 |
FREETMPS; |
145 |
LEAVE; |
146 |
PUTBACK; |
147 |
DEBUGf("getdir end: %i\n",rv); |
148 |
FUSE_CONTEXT_POST; |
149 |
return rv; |
150 |
} |
151 |
|
152 |
int _PLfuse_mknod (const char *file, mode_t mode, dev_t dev) { |
153 |
int rv; |
154 |
FUSE_CONTEXT_PRE; |
155 |
DEBUGf("mknod begin\n"); |
156 |
ENTER; |
157 |
SAVETMPS; |
158 |
PUSHMARK(SP); |
159 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
160 |
XPUSHs(sv_2mortal(newSViv(mode))); |
161 |
XPUSHs(sv_2mortal(newSViv(dev))); |
162 |
PUTBACK; |
163 |
rv = call_sv(_PLfuse_callbacks[3],G_SCALAR); |
164 |
SPAGAIN; |
165 |
if(rv) |
166 |
rv = POPi; |
167 |
else |
168 |
rv = 0; |
169 |
FREETMPS; |
170 |
LEAVE; |
171 |
PUTBACK; |
172 |
DEBUGf("mknod end: %i\n",rv); |
173 |
FUSE_CONTEXT_POST; |
174 |
return rv; |
175 |
} |
176 |
|
177 |
int _PLfuse_mkdir (const char *file, mode_t mode) { |
178 |
int rv; |
179 |
FUSE_CONTEXT_PRE; |
180 |
DEBUGf("mkdir begin\n"); |
181 |
ENTER; |
182 |
SAVETMPS; |
183 |
PUSHMARK(SP); |
184 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
185 |
XPUSHs(sv_2mortal(newSViv(mode))); |
186 |
PUTBACK; |
187 |
rv = call_sv(_PLfuse_callbacks[4],G_SCALAR); |
188 |
SPAGAIN; |
189 |
if(rv) |
190 |
rv = POPi; |
191 |
else |
192 |
rv = 0; |
193 |
FREETMPS; |
194 |
LEAVE; |
195 |
PUTBACK; |
196 |
DEBUGf("mkdir end: %i\n",rv); |
197 |
FUSE_CONTEXT_POST; |
198 |
return rv; |
199 |
} |
200 |
|
201 |
|
202 |
int _PLfuse_unlink (const char *file) { |
203 |
int rv; |
204 |
FUSE_CONTEXT_PRE; |
205 |
DEBUGf("unlink begin\n"); |
206 |
ENTER; |
207 |
SAVETMPS; |
208 |
PUSHMARK(SP); |
209 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
210 |
PUTBACK; |
211 |
rv = call_sv(_PLfuse_callbacks[5],G_SCALAR); |
212 |
SPAGAIN; |
213 |
if(rv) |
214 |
rv = POPi; |
215 |
else |
216 |
rv = 0; |
217 |
FREETMPS; |
218 |
LEAVE; |
219 |
PUTBACK; |
220 |
DEBUGf("unlink end: %i\n",rv); |
221 |
FUSE_CONTEXT_POST; |
222 |
return rv; |
223 |
} |
224 |
|
225 |
int _PLfuse_rmdir (const char *file) { |
226 |
int rv; |
227 |
FUSE_CONTEXT_PRE; |
228 |
DEBUGf("rmdir begin\n"); |
229 |
ENTER; |
230 |
SAVETMPS; |
231 |
PUSHMARK(SP); |
232 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
233 |
PUTBACK; |
234 |
rv = call_sv(_PLfuse_callbacks[6],G_SCALAR); |
235 |
SPAGAIN; |
236 |
if(rv) |
237 |
rv = POPi; |
238 |
else |
239 |
rv = 0; |
240 |
FREETMPS; |
241 |
LEAVE; |
242 |
PUTBACK; |
243 |
DEBUGf("rmdir end: %i\n",rv); |
244 |
FUSE_CONTEXT_POST; |
245 |
return rv; |
246 |
} |
247 |
|
248 |
int _PLfuse_symlink (const char *file, const char *new) { |
249 |
int rv; |
250 |
FUSE_CONTEXT_PRE; |
251 |
DEBUGf("symlink begin\n"); |
252 |
ENTER; |
253 |
SAVETMPS; |
254 |
PUSHMARK(SP); |
255 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
256 |
XPUSHs(sv_2mortal(newSVpv(new,0))); |
257 |
PUTBACK; |
258 |
rv = call_sv(_PLfuse_callbacks[7],G_SCALAR); |
259 |
SPAGAIN; |
260 |
if(rv) |
261 |
rv = POPi; |
262 |
else |
263 |
rv = 0; |
264 |
FREETMPS; |
265 |
LEAVE; |
266 |
PUTBACK; |
267 |
DEBUGf("symlink end: %i\n",rv); |
268 |
FUSE_CONTEXT_POST; |
269 |
return rv; |
270 |
} |
271 |
|
272 |
int _PLfuse_rename (const char *file, const char *new) { |
273 |
int rv; |
274 |
FUSE_CONTEXT_PRE; |
275 |
DEBUGf("rename begin\n"); |
276 |
ENTER; |
277 |
SAVETMPS; |
278 |
PUSHMARK(SP); |
279 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
280 |
XPUSHs(sv_2mortal(newSVpv(new,0))); |
281 |
PUTBACK; |
282 |
rv = call_sv(_PLfuse_callbacks[8],G_SCALAR); |
283 |
SPAGAIN; |
284 |
if(rv) |
285 |
rv = POPi; |
286 |
else |
287 |
rv = 0; |
288 |
FREETMPS; |
289 |
LEAVE; |
290 |
PUTBACK; |
291 |
DEBUGf("rename end: %i\n",rv); |
292 |
FUSE_CONTEXT_POST; |
293 |
return rv; |
294 |
} |
295 |
|
296 |
int _PLfuse_link (const char *file, const char *new) { |
297 |
int rv; |
298 |
FUSE_CONTEXT_PRE; |
299 |
DEBUGf("link begin\n"); |
300 |
ENTER; |
301 |
SAVETMPS; |
302 |
PUSHMARK(SP); |
303 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
304 |
XPUSHs(sv_2mortal(newSVpv(new,0))); |
305 |
PUTBACK; |
306 |
rv = call_sv(_PLfuse_callbacks[9],G_SCALAR); |
307 |
SPAGAIN; |
308 |
if(rv) |
309 |
rv = POPi; |
310 |
else |
311 |
rv = 0; |
312 |
FREETMPS; |
313 |
LEAVE; |
314 |
PUTBACK; |
315 |
DEBUGf("link end: %i\n",rv); |
316 |
FUSE_CONTEXT_POST; |
317 |
return rv; |
318 |
} |
319 |
|
320 |
int _PLfuse_chmod (const char *file, mode_t mode) { |
321 |
int rv; |
322 |
FUSE_CONTEXT_PRE; |
323 |
DEBUGf("chmod begin\n"); |
324 |
ENTER; |
325 |
SAVETMPS; |
326 |
PUSHMARK(SP); |
327 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
328 |
XPUSHs(sv_2mortal(newSViv(mode))); |
329 |
PUTBACK; |
330 |
rv = call_sv(_PLfuse_callbacks[10],G_SCALAR); |
331 |
SPAGAIN; |
332 |
if(rv) |
333 |
rv = POPi; |
334 |
else |
335 |
rv = 0; |
336 |
FREETMPS; |
337 |
LEAVE; |
338 |
PUTBACK; |
339 |
DEBUGf("chmod end: %i\n",rv); |
340 |
FUSE_CONTEXT_POST; |
341 |
return rv; |
342 |
} |
343 |
|
344 |
int _PLfuse_chown (const char *file, uid_t uid, gid_t gid) { |
345 |
int rv; |
346 |
FUSE_CONTEXT_PRE; |
347 |
DEBUGf("chown begin\n"); |
348 |
ENTER; |
349 |
SAVETMPS; |
350 |
PUSHMARK(SP); |
351 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
352 |
XPUSHs(sv_2mortal(newSViv(uid))); |
353 |
XPUSHs(sv_2mortal(newSViv(gid))); |
354 |
PUTBACK; |
355 |
rv = call_sv(_PLfuse_callbacks[11],G_SCALAR); |
356 |
SPAGAIN; |
357 |
if(rv) |
358 |
rv = POPi; |
359 |
else |
360 |
rv = 0; |
361 |
FREETMPS; |
362 |
LEAVE; |
363 |
PUTBACK; |
364 |
DEBUGf("chown end: %i\n",rv); |
365 |
FUSE_CONTEXT_POST; |
366 |
return rv; |
367 |
} |
368 |
|
369 |
int _PLfuse_truncate (const char *file, off_t off) { |
370 |
int rv; |
371 |
FUSE_CONTEXT_PRE; |
372 |
DEBUGf("truncate begin\n"); |
373 |
ENTER; |
374 |
SAVETMPS; |
375 |
PUSHMARK(SP); |
376 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
377 |
XPUSHs(sv_2mortal(newSViv(off))); |
378 |
PUTBACK; |
379 |
rv = call_sv(_PLfuse_callbacks[12],G_SCALAR); |
380 |
SPAGAIN; |
381 |
if(rv) |
382 |
rv = POPi; |
383 |
else |
384 |
rv = 0; |
385 |
FREETMPS; |
386 |
LEAVE; |
387 |
PUTBACK; |
388 |
DEBUGf("truncate end: %i\n",rv); |
389 |
FUSE_CONTEXT_POST; |
390 |
return rv; |
391 |
} |
392 |
|
393 |
int _PLfuse_utime (const char *file, struct utimbuf *uti) { |
394 |
int rv; |
395 |
FUSE_CONTEXT_PRE; |
396 |
DEBUGf("utime begin\n"); |
397 |
ENTER; |
398 |
SAVETMPS; |
399 |
PUSHMARK(SP); |
400 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
401 |
XPUSHs(sv_2mortal(newSViv(uti->actime))); |
402 |
XPUSHs(sv_2mortal(newSViv(uti->modtime))); |
403 |
PUTBACK; |
404 |
rv = call_sv(_PLfuse_callbacks[13],G_SCALAR); |
405 |
SPAGAIN; |
406 |
if(rv) |
407 |
rv = POPi; |
408 |
else |
409 |
rv = 0; |
410 |
FREETMPS; |
411 |
LEAVE; |
412 |
PUTBACK; |
413 |
DEBUGf("utime end: %i\n",rv); |
414 |
FUSE_CONTEXT_POST; |
415 |
return rv; |
416 |
} |
417 |
|
418 |
int _PLfuse_open (const char *file, struct fuse_file_info *fi) { |
419 |
int rv; |
420 |
int flags = fi->flags; |
421 |
FUSE_CONTEXT_PRE; |
422 |
DEBUGf("open begin\n"); |
423 |
ENTER; |
424 |
SAVETMPS; |
425 |
PUSHMARK(SP); |
426 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
427 |
XPUSHs(sv_2mortal(newSViv(flags))); |
428 |
PUTBACK; |
429 |
rv = call_sv(_PLfuse_callbacks[14],G_SCALAR); |
430 |
SPAGAIN; |
431 |
if(rv) |
432 |
rv = POPi; |
433 |
else |
434 |
rv = 0; |
435 |
FREETMPS; |
436 |
LEAVE; |
437 |
PUTBACK; |
438 |
DEBUGf("open end: %i\n",rv); |
439 |
FUSE_CONTEXT_POST; |
440 |
return rv; |
441 |
} |
442 |
|
443 |
int _PLfuse_read (const char *file, char *buf, size_t buflen, off_t off, struct fuse_file_info *fi) { |
444 |
int rv; |
445 |
FUSE_CONTEXT_PRE; |
446 |
DEBUGf("read begin\n"); |
447 |
ENTER; |
448 |
SAVETMPS; |
449 |
PUSHMARK(SP); |
450 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
451 |
XPUSHs(sv_2mortal(newSViv(buflen))); |
452 |
XPUSHs(sv_2mortal(newSViv(off))); |
453 |
PUTBACK; |
454 |
rv = call_sv(_PLfuse_callbacks[15],G_SCALAR); |
455 |
SPAGAIN; |
456 |
if(!rv) |
457 |
rv = -ENOENT; |
458 |
else { |
459 |
SV *mysv = POPs; |
460 |
if(SvTYPE(mysv) == SVt_NV || SvTYPE(mysv) == SVt_IV) |
461 |
rv = SvIV(mysv); |
462 |
else { |
463 |
if(SvPOK(mysv)) { |
464 |
rv = SvCUR(mysv); |
465 |
} else { |
466 |
rv = 0; |
467 |
} |
468 |
if(rv > buflen) |
469 |
croak("read() handler returned more than buflen! (%i > %i)",rv,buflen); |
470 |
if(rv) |
471 |
memcpy(buf,SvPV_nolen(mysv),rv); |
472 |
} |
473 |
} |
474 |
FREETMPS; |
475 |
LEAVE; |
476 |
PUTBACK; |
477 |
DEBUGf("read end: %i\n",rv); |
478 |
FUSE_CONTEXT_POST; |
479 |
return rv; |
480 |
} |
481 |
|
482 |
int _PLfuse_write (const char *file, const char *buf, size_t buflen, off_t off, struct fuse_file_info *fi) { |
483 |
int rv; |
484 |
FUSE_CONTEXT_PRE; |
485 |
DEBUGf("write begin\n"); |
486 |
ENTER; |
487 |
SAVETMPS; |
488 |
PUSHMARK(SP); |
489 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
490 |
XPUSHs(sv_2mortal(newSVpvn(buf,buflen))); |
491 |
XPUSHs(sv_2mortal(newSViv(off))); |
492 |
PUTBACK; |
493 |
rv = call_sv(_PLfuse_callbacks[16],G_SCALAR); |
494 |
SPAGAIN; |
495 |
if(rv) |
496 |
rv = POPi; |
497 |
else |
498 |
rv = 0; |
499 |
FREETMPS; |
500 |
LEAVE; |
501 |
PUTBACK; |
502 |
DEBUGf("write end: %i\n",rv); |
503 |
FUSE_CONTEXT_POST; |
504 |
return rv; |
505 |
} |
506 |
|
507 |
int _PLfuse_statfs (const char *file, struct statvfs *st) { |
508 |
int rv; |
509 |
FUSE_CONTEXT_PRE; |
510 |
DEBUGf("statfs begin\n"); |
511 |
ENTER; |
512 |
SAVETMPS; |
513 |
PUSHMARK(SP); |
514 |
PUTBACK; |
515 |
rv = call_sv(_PLfuse_callbacks[17],G_ARRAY); |
516 |
SPAGAIN; |
517 |
DEBUGf("statfs got %i params\n",rv); |
518 |
if(rv == 6 || rv == 7) { |
519 |
st->f_bsize = POPi; |
520 |
st->f_bfree = POPi; |
521 |
st->f_blocks = POPi; |
522 |
st->f_ffree = POPi; |
523 |
st->f_files = POPi; |
524 |
st->f_namemax = POPi; |
525 |
/* zero and fill-in other */ |
526 |
st->f_fsid = 0; |
527 |
st->f_frsize = 4096; |
528 |
st->f_flag = 0; |
529 |
st->f_bavail = st->f_bfree; |
530 |
st->f_favail = st->f_ffree; |
531 |
|
532 |
if(rv == 7) |
533 |
rv = POPi; |
534 |
else |
535 |
rv = 0; |
536 |
} else |
537 |
if(rv > 1) |
538 |
croak("inappropriate number of returned values from statfs"); |
539 |
else |
540 |
if(rv) |
541 |
rv = POPi; |
542 |
else |
543 |
rv = -ENOSYS; |
544 |
FREETMPS; |
545 |
LEAVE; |
546 |
PUTBACK; |
547 |
DEBUGf("statfs end: %i\n",rv); |
548 |
FUSE_CONTEXT_POST; |
549 |
return rv; |
550 |
} |
551 |
|
552 |
int _PLfuse_flush (const char *file, struct fuse_file_info *fi) { |
553 |
int rv; |
554 |
FUSE_CONTEXT_PRE; |
555 |
DEBUGf("flush begin\n"); |
556 |
ENTER; |
557 |
SAVETMPS; |
558 |
PUSHMARK(SP); |
559 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
560 |
PUTBACK; |
561 |
rv = call_sv(_PLfuse_callbacks[18],G_SCALAR); |
562 |
SPAGAIN; |
563 |
if(rv) |
564 |
rv = POPi; |
565 |
else |
566 |
rv = 0; |
567 |
FREETMPS; |
568 |
LEAVE; |
569 |
PUTBACK; |
570 |
DEBUGf("flush end: %i\n",rv); |
571 |
FUSE_CONTEXT_POST; |
572 |
return rv; |
573 |
} |
574 |
|
575 |
int _PLfuse_release (const char *file, struct fuse_file_info *fi) { |
576 |
int rv; |
577 |
int flags = fi->flags; |
578 |
FUSE_CONTEXT_PRE; |
579 |
DEBUGf("release begin\n"); |
580 |
ENTER; |
581 |
SAVETMPS; |
582 |
PUSHMARK(SP); |
583 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
584 |
XPUSHs(sv_2mortal(newSViv(flags))); |
585 |
PUTBACK; |
586 |
rv = call_sv(_PLfuse_callbacks[19],G_SCALAR); |
587 |
SPAGAIN; |
588 |
if(rv) |
589 |
rv = POPi; |
590 |
else |
591 |
rv = 0; |
592 |
FREETMPS; |
593 |
LEAVE; |
594 |
PUTBACK; |
595 |
DEBUGf("release end: %i\n",rv); |
596 |
FUSE_CONTEXT_POST; |
597 |
return rv; |
598 |
} |
599 |
|
600 |
int _PLfuse_fsync (const char *file, int datasync, struct fuse_file_info *fi) { |
601 |
int rv; |
602 |
int flags = fi->flags; |
603 |
FUSE_CONTEXT_PRE; |
604 |
DEBUGf("fsync begin\n"); |
605 |
ENTER; |
606 |
SAVETMPS; |
607 |
PUSHMARK(SP); |
608 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
609 |
XPUSHs(sv_2mortal(newSViv(flags))); |
610 |
PUTBACK; |
611 |
rv = call_sv(_PLfuse_callbacks[20],G_SCALAR); |
612 |
SPAGAIN; |
613 |
if(rv) |
614 |
rv = POPi; |
615 |
else |
616 |
rv = 0; |
617 |
FREETMPS; |
618 |
LEAVE; |
619 |
PUTBACK; |
620 |
DEBUGf("fsync end: %i\n",rv); |
621 |
FUSE_CONTEXT_POST; |
622 |
return rv; |
623 |
} |
624 |
|
625 |
int _PLfuse_setxattr (const char *file, const char *name, const char *buf, size_t buflen, int flags) { |
626 |
int rv; |
627 |
FUSE_CONTEXT_PRE; |
628 |
DEBUGf("setxattr begin\n"); |
629 |
ENTER; |
630 |
SAVETMPS; |
631 |
PUSHMARK(SP); |
632 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
633 |
XPUSHs(sv_2mortal(newSVpv(name,0))); |
634 |
XPUSHs(sv_2mortal(newSVpvn(buf,buflen))); |
635 |
XPUSHs(sv_2mortal(newSViv(flags))); |
636 |
PUTBACK; |
637 |
rv = call_sv(_PLfuse_callbacks[21],G_SCALAR); |
638 |
SPAGAIN; |
639 |
if(rv) |
640 |
rv = POPi; |
641 |
else |
642 |
rv = 0; |
643 |
FREETMPS; |
644 |
LEAVE; |
645 |
PUTBACK; |
646 |
DEBUGf("setxattr end: %i\n",rv); |
647 |
FUSE_CONTEXT_POST; |
648 |
return rv; |
649 |
} |
650 |
|
651 |
int _PLfuse_getxattr (const char *file, const char *name, char *buf, size_t buflen) { |
652 |
int rv; |
653 |
FUSE_CONTEXT_PRE; |
654 |
DEBUGf("getxattr begin\n"); |
655 |
ENTER; |
656 |
SAVETMPS; |
657 |
PUSHMARK(SP); |
658 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
659 |
XPUSHs(sv_2mortal(newSVpv(name,0))); |
660 |
PUTBACK; |
661 |
rv = call_sv(_PLfuse_callbacks[22],G_SCALAR); |
662 |
SPAGAIN; |
663 |
if(!rv) |
664 |
rv = -ENOENT; |
665 |
else { |
666 |
SV *mysv = POPs; |
667 |
|
668 |
rv = 0; |
669 |
if(SvTYPE(mysv) == SVt_NV || SvTYPE(mysv) == SVt_IV) |
670 |
rv = SvIV(mysv); |
671 |
else { |
672 |
if(SvPOK(mysv)) { |
673 |
rv = SvCUR(mysv); |
674 |
} else { |
675 |
rv = 0; |
676 |
} |
677 |
if ((rv > 0) && (buflen > 0)) |
678 |
{ |
679 |
if(rv > buflen) |
680 |
rv = -ERANGE; |
681 |
else |
682 |
memcpy(buf,SvPV_nolen(mysv),rv); |
683 |
} |
684 |
} |
685 |
} |
686 |
FREETMPS; |
687 |
LEAVE; |
688 |
PUTBACK; |
689 |
DEBUGf("getxattr end: %i\n",rv); |
690 |
FUSE_CONTEXT_POST; |
691 |
return rv; |
692 |
} |
693 |
|
694 |
int _PLfuse_listxattr (const char *file, char *list, size_t size) { |
695 |
int prv, rv; |
696 |
FUSE_CONTEXT_PRE; |
697 |
DEBUGf("listxattr begin\n"); |
698 |
ENTER; |
699 |
SAVETMPS; |
700 |
PUSHMARK(SP); |
701 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
702 |
PUTBACK; |
703 |
prv = call_sv(_PLfuse_callbacks[23],G_ARRAY); |
704 |
SPAGAIN; |
705 |
if(!prv) |
706 |
rv = -ENOENT; |
707 |
else { |
708 |
|
709 |
char *p = list; |
710 |
int spc = size; |
711 |
int total_len = 0; |
712 |
|
713 |
rv = POPi; |
714 |
prv--; |
715 |
|
716 |
/* Always nul terminate */ |
717 |
if (list && (size > 0)) |
718 |
list[0] = '\0'; |
719 |
|
720 |
while (prv > 0) |
721 |
{ |
722 |
SV *mysv = POPs; |
723 |
prv--; |
724 |
|
725 |
if (SvPOK(mysv)) { |
726 |
/* Copy nul too */ |
727 |
int s = SvCUR(mysv) + 1; |
728 |
total_len += s; |
729 |
|
730 |
if (p && (size > 0) && (spc >= s)) |
731 |
{ |
732 |
memcpy(p,SvPV_nolen(mysv),s); |
733 |
p += s; |
734 |
spc -= s; |
735 |
} |
736 |
} |
737 |
} |
738 |
|
739 |
/* |
740 |
* If the Perl returned an error, return that. |
741 |
* Otherwise check that the buffer was big enough. |
742 |
*/ |
743 |
if (rv == 0) |
744 |
{ |
745 |
rv = total_len; |
746 |
if ((size > 0) && (size < total_len)) |
747 |
rv = -ERANGE; |
748 |
} |
749 |
} |
750 |
FREETMPS; |
751 |
LEAVE; |
752 |
PUTBACK; |
753 |
DEBUGf("listxattr end: %i\n",rv); |
754 |
FUSE_CONTEXT_POST; |
755 |
return rv; |
756 |
} |
757 |
|
758 |
int _PLfuse_removexattr (const char *file, const char *name) { |
759 |
int rv; |
760 |
FUSE_CONTEXT_PRE; |
761 |
DEBUGf("removexattr begin\n"); |
762 |
ENTER; |
763 |
SAVETMPS; |
764 |
PUSHMARK(SP); |
765 |
XPUSHs(sv_2mortal(newSVpv(file,0))); |
766 |
XPUSHs(sv_2mortal(newSVpv(name,0))); |
767 |
PUTBACK; |
768 |
rv = call_sv(_PLfuse_callbacks[24],G_SCALAR); |
769 |
SPAGAIN; |
770 |
if(rv) |
771 |
rv = POPi; |
772 |
else |
773 |
rv = 0; |
774 |
FREETMPS; |
775 |
LEAVE; |
776 |
PUTBACK; |
777 |
DEBUGf("removexattr end: %i\n",rv); |
778 |
FUSE_CONTEXT_POST; |
779 |
return rv; |
780 |
} |
781 |
|
782 |
struct fuse_operations _available_ops = { |
783 |
getattr: _PLfuse_getattr, |
784 |
readlink: _PLfuse_readlink, |
785 |
getdir: _PLfuse_getdir, |
786 |
#if 0 |
787 |
readdir: _PLfuse_readdir, |
788 |
#endif |
789 |
mknod: _PLfuse_mknod, |
790 |
mkdir: _PLfuse_mkdir, |
791 |
unlink: _PLfuse_unlink, |
792 |
rmdir: _PLfuse_rmdir, |
793 |
symlink: _PLfuse_symlink, |
794 |
rename: _PLfuse_rename, |
795 |
link: _PLfuse_link, |
796 |
chmod: _PLfuse_chmod, |
797 |
chown: _PLfuse_chown, |
798 |
truncate: _PLfuse_truncate, |
799 |
utime: _PLfuse_utime, |
800 |
open: _PLfuse_open, |
801 |
read: _PLfuse_read, |
802 |
write: _PLfuse_write, |
803 |
statfs: _PLfuse_statfs, |
804 |
flush: _PLfuse_flush, |
805 |
release: _PLfuse_release, |
806 |
fsync: _PLfuse_fsync, |
807 |
setxattr: _PLfuse_setxattr, |
808 |
getxattr: _PLfuse_getxattr, |
809 |
listxattr: _PLfuse_listxattr, |
810 |
removexattr: _PLfuse_removexattr, |
811 |
}; |
812 |
|
813 |
MODULE = Fuse PACKAGE = Fuse |
814 |
PROTOTYPES: DISABLE |
815 |
|
816 |
SV* |
817 |
fuse_get_context() |
818 |
PREINIT: |
819 |
struct fuse_context *fc; |
820 |
CODE: |
821 |
fc = fuse_get_context(); |
822 |
if(fc) { |
823 |
HV *hash = newHV(); |
824 |
hv_store(hash, "uid", 3, newSViv(fc->uid), 0); |
825 |
hv_store(hash, "gid", 3, newSViv(fc->gid), 0); |
826 |
hv_store(hash, "pid", 3, newSViv(fc->pid), 0); |
827 |
RETVAL = newRV_noinc((SV*)hash); |
828 |
} else { |
829 |
XSRETURN_UNDEF; |
830 |
} |
831 |
OUTPUT: |
832 |
RETVAL |
833 |
|
834 |
void |
835 |
perl_fuse_main(...) |
836 |
PREINIT: |
837 |
struct fuse_operations fops = |
838 |
{NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL, |
839 |
NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL}; |
840 |
int i, fd, debug, threaded; |
841 |
char *mountpoint; |
842 |
char *mountopts; |
843 |
struct fuse_args margs = FUSE_ARGS_INIT(0, NULL); |
844 |
struct fuse_args fargs = FUSE_ARGS_INIT(0, NULL); |
845 |
INIT: |
846 |
if(items != 29) { |
847 |
fprintf(stderr,"Perl<->C inconsistency or internal error\n"); |
848 |
XSRETURN_UNDEF; |
849 |
} |
850 |
CODE: |
851 |
debug = SvIV(ST(0)); |
852 |
threaded = SvIV(ST(1)); |
853 |
if(threaded) { |
854 |
#ifdef FUSE_USE_ITHREADS |
855 |
master_interp = PERL_GET_CONTEXT; |
856 |
#else |
857 |
fprintf(stderr,"FUSE warning: Your script has requested multithreaded " |
858 |
"mode, but your perl was not built with -Dusethreads. " |
859 |
"Threads are disabled.\n"); |
860 |
threaded = 0; |
861 |
#endif |
862 |
} |
863 |
mountpoint = SvPV_nolen(ST(2)); |
864 |
mountopts = SvPV_nolen(ST(3)); |
865 |
for(i=0;i<N_CALLBACKS;i++) { |
866 |
SV *var = ST(i+4); |
867 |
/* allow symbolic references, or real code references. */ |
868 |
if(SvOK(var) && (SvPOK(var) || (SvROK(var) && SvTYPE(SvRV(var)) == SVt_PVCV))) { |
869 |
void **tmp1 = (void**)&_available_ops, **tmp2 = (void**)&fops; |
870 |
tmp2[i] = tmp1[i]; |
871 |
#ifdef FUSE_USE_ITHREADS |
872 |
if(threaded) |
873 |
/* note: under 5.8.7, this croaks for code references. */ |
874 |
SvSHARE(var); |
875 |
#endif |
876 |
_PLfuse_callbacks[i] = var; |
877 |
} else |
878 |
if(SvOK(var)) { |
879 |
croak("invalid callback passed to perl_fuse_main " |
880 |
"(%s is not a string, code ref, or undef).\n", |
881 |
i+4,SvPVbyte_nolen(var)); |
882 |
} |
883 |
} |
884 |
/* |
885 |
* XXX: What comes here is just a ridiculous use of the option parsing API |
886 |
* to hack on compatibility with other parts of the new API. First and |
887 |
* foremost, real C argc/argv would be good to get at... |
888 |
*/ |
889 |
if (mountopts && |
890 |
(fuse_opt_add_arg(&margs, "") == -1 || |
891 |
fuse_opt_add_arg(&margs, "-o") == -1 || |
892 |
fuse_opt_add_arg(&margs, mountopts) == -1)) { |
893 |
fuse_opt_free_args(&margs); |
894 |
croak("out of memory\n"); |
895 |
} |
896 |
fd = fuse_mount(mountpoint,&margs); |
897 |
fuse_opt_free_args(&margs); |
898 |
if(fd < 0) |
899 |
croak("could not mount fuse filesystem!\n"); |
900 |
if (debug) { |
901 |
if ( fuse_opt_add_arg(&fargs, "") == -1 || |
902 |
fuse_opt_add_arg(&fargs, "-d") == -1) { |
903 |
fuse_opt_free_args(&fargs); |
904 |
croak("out of memory\n"); |
905 |
} |
906 |
} else { |
907 |
if (fuse_opt_add_arg(&fargs, "") == -1) |
908 |
croak("out of memory\n"); |
909 |
} |
910 |
|
911 |
if(threaded) { |
912 |
fuse_loop_mt(fuse_new(fd,&fargs,&fops,sizeof(fops))); |
913 |
} else |
914 |
fuse_loop(fuse_new(fd,&fargs,&fops,sizeof(fops))); |
915 |
fuse_opt_free_args(&fargs); |