/[fuse.before_github]/perl-llin/Fuse.xs
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Revision 19 - (hide annotations)
Tue Dec 27 12:47:00 2005 UTC (16 years, 5 months ago) by dpavlin
Original Path: perl/trunk/Fuse.xs
File size: 17154 byte(s)
Changes from Mark Glines in preparation for 0.07
- Remove the FUSE_DEBUG constant; we never actually implemented
  it to begin with.
- "make test" now uses the version of Fuse you've just built,
  not the one installed in /usr/lib/perl5.
- getattr test now allows blksize to vary between host and fuse
  fs, as this is not a bug.
- Add experimental support for threading.  The following minor
  API changes accommodate this:
- The nonexistent (yet documented) "unthreaded=>1" attribute
  has been replaced with the "threaded=>1" attribute, and this
  time it actually exists.
- Symbolic refs like "main::e_getattr" are now allowed for
  callbacks, because threaded mode needs to share() the
  callbacks, yet perl 5.8.7 does not allow share()ing code
  refs yet.  Direct code-refs are still supported as much
  as possible (currently, non-threaded mode).
- testsuite uses a multithreaded loopback.pl, when available.
- Update docs accordingly.  Update examples accordingly.

1 mszeredi 4 #include "EXTERN.h"
2     #include "perl.h"
3     #include "XSUB.h"
4    
5 dpavlin 18 #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(); {
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
28     # define FUSE_CONTEXT_POST
29     #endif
30 dpavlin 7 #include <fuse/fuse.h>
31 mszeredi 4
32     #undef DEBUGf
33     #if 0
34 dpavlin 18 #define DEBUGf(f, a...) fprintf(stderr, "%s:%d (%i): " f,__BASE_FILE__,__LINE__,sp-PL_stack_base ,##a )
35 mszeredi 4 #else
36     #define DEBUGf(a...)
37     #endif
38    
39 richdawe 14 #define N_CALLBACKS 25
40     SV *_PLfuse_callbacks[N_CALLBACKS];
41 mszeredi 4
42     int _PLfuse_getattr(const char *file, struct stat *result) {
43 dpavlin 18 int rv, statcount;
44     FUSE_CONTEXT_PRE;
45 mszeredi 4 dSP;
46 dpavlin 18 DEBUGf("getattr begin: %s\n",file);
47 mszeredi 4 ENTER;
48     SAVETMPS;
49     PUSHMARK(SP);
50     XPUSHs(sv_2mortal(newSVpv(file,strlen(file))));
51     PUTBACK;
52     rv = call_sv(_PLfuse_callbacks[0],G_ARRAY);
53     SPAGAIN;
54     if(rv != 13) {
55     if(rv > 1) {
56     fprintf(stderr,"inappropriate number of returned values from getattr\n");
57     rv = -ENOSYS;
58     } else if(rv)
59     rv = POPi;
60     else
61     rv = -ENOENT;
62     } else {
63 dpavlin 8 result->st_blocks = POPi;
64 mszeredi 4 result->st_blksize = POPi;
65     result->st_ctime = POPi;
66     result->st_mtime = POPi;
67     result->st_atime = POPi;
68     result->st_size = POPi;
69     result->st_rdev = POPi;
70     result->st_gid = POPi;
71     result->st_uid = POPi;
72     result->st_nlink = POPi;
73     result->st_mode = POPi;
74     /*result->st_ino =*/ POPi;
75     result->st_dev = POPi;
76     rv = 0;
77     }
78     FREETMPS;
79     LEAVE;
80     PUTBACK;
81 dpavlin 18 DEBUGf("getattr end: %i\n",rv);
82     FUSE_CONTEXT_POST;
83 mszeredi 4 return rv;
84     }
85    
86     int _PLfuse_readlink(const char *file,char *buf,size_t buflen) {
87     int rv;
88     char *rvstr;
89 dpavlin 18 I32 ax;
90     FUSE_CONTEXT_PRE;
91 mszeredi 4 dSP;
92     if(buflen < 1)
93     return EINVAL;
94 dpavlin 18 DEBUGf("readlink begin\n");
95 mszeredi 4 ENTER;
96     SAVETMPS;
97     PUSHMARK(SP);
98     XPUSHs(sv_2mortal(newSVpv(file,0)));
99     PUTBACK;
100     rv = call_sv(_PLfuse_callbacks[1],G_SCALAR);
101     SPAGAIN;
102     if(!rv)
103     rv = -ENOENT;
104     else {
105     SV *mysv = POPs;
106     if(SvTYPE(mysv) == SVt_IV || SvTYPE(mysv) == SVt_NV)
107     rv = SvIV(mysv);
108     else {
109     strncpy(buf,SvPV_nolen(mysv),buflen);
110     rv = 0;
111     }
112     }
113     FREETMPS;
114     LEAVE;
115     buf[buflen-1] = 0;
116     PUTBACK;
117 dpavlin 18 DEBUGf("readlink end: %i\n",rv);
118     FUSE_CONTEXT_POST;
119 mszeredi 4 return rv;
120     }
121    
122     int _PLfuse_getdir(const char *file, fuse_dirh_t dirh, fuse_dirfil_t dirfil) {
123     int prv, rv;
124 dpavlin 18 FUSE_CONTEXT_PRE;
125 mszeredi 4 dSP;
126 dpavlin 18 DEBUGf("getdir begin\n");
127 mszeredi 4 ENTER;
128     SAVETMPS;
129     PUSHMARK(SP);
130     XPUSHs(sv_2mortal(newSVpv(file,0)));
131     PUTBACK;
132     prv = call_sv(_PLfuse_callbacks[2],G_ARRAY);
133     SPAGAIN;
134     if(prv) {
135     rv = POPi;
136     while(--prv)
137 dpavlin 9 dirfil(dirh,POPp,0);
138 mszeredi 4 } else {
139     fprintf(stderr,"getdir() handler returned nothing!\n");
140     rv = -ENOSYS;
141     }
142     FREETMPS;
143     LEAVE;
144     PUTBACK;
145 dpavlin 18 DEBUGf("getdir end: %i\n",rv);
146     FUSE_CONTEXT_POST;
147 mszeredi 4 return rv;
148     }
149    
150     int _PLfuse_mknod (const char *file, mode_t mode, dev_t dev) {
151     int rv;
152     SV *rvsv;
153     char *rvstr;
154 dpavlin 18 FUSE_CONTEXT_PRE;
155 mszeredi 4 dSP;
156 dpavlin 18 DEBUGf("mknod begin\n");
157 mszeredi 4 ENTER;
158     SAVETMPS;
159     PUSHMARK(SP);
160     XPUSHs(sv_2mortal(newSVpv(file,0)));
161     XPUSHs(sv_2mortal(newSViv(mode)));
162     XPUSHs(sv_2mortal(newSViv(dev)));
163     PUTBACK;
164     rv = call_sv(_PLfuse_callbacks[3],G_SCALAR);
165     SPAGAIN;
166     if(rv)
167     rv = POPi;
168     else
169     rv = 0;
170     FREETMPS;
171     LEAVE;
172     PUTBACK;
173 dpavlin 18 DEBUGf("mknod end: %i\n",rv);
174     FUSE_CONTEXT_POST;
175 mszeredi 4 return rv;
176     }
177    
178     int _PLfuse_mkdir (const char *file, mode_t mode) {
179     int rv;
180     SV *rvsv;
181     char *rvstr;
182 dpavlin 18 FUSE_CONTEXT_PRE;
183 mszeredi 4 dSP;
184 dpavlin 18 DEBUGf("mkdir begin\n");
185 mszeredi 4 ENTER;
186     SAVETMPS;
187     PUSHMARK(SP);
188     XPUSHs(sv_2mortal(newSVpv(file,0)));
189     XPUSHs(sv_2mortal(newSViv(mode)));
190     PUTBACK;
191     rv = call_sv(_PLfuse_callbacks[4],G_SCALAR);
192     SPAGAIN;
193     if(rv)
194     rv = POPi;
195     else
196     rv = 0;
197     FREETMPS;
198     LEAVE;
199     PUTBACK;
200 dpavlin 18 DEBUGf("mkdir end: %i\n",rv);
201     FUSE_CONTEXT_POST;
202 mszeredi 4 return rv;
203     }
204    
205    
206     int _PLfuse_unlink (const char *file) {
207     int rv;
208     SV *rvsv;
209     char *rvstr;
210 dpavlin 18 FUSE_CONTEXT_PRE;
211 mszeredi 4 dSP;
212 dpavlin 18 DEBUGf("unlink begin\n");
213 mszeredi 4 ENTER;
214     SAVETMPS;
215     PUSHMARK(SP);
216     XPUSHs(sv_2mortal(newSVpv(file,0)));
217     PUTBACK;
218     rv = call_sv(_PLfuse_callbacks[5],G_SCALAR);
219     SPAGAIN;
220     if(rv)
221     rv = POPi;
222     else
223     rv = 0;
224     FREETMPS;
225     LEAVE;
226     PUTBACK;
227 dpavlin 18 DEBUGf("unlink end: %i\n",rv);
228     FUSE_CONTEXT_POST;
229 mszeredi 4 return rv;
230     }
231    
232     int _PLfuse_rmdir (const char *file) {
233     int rv;
234     SV *rvsv;
235     char *rvstr;
236 dpavlin 18 FUSE_CONTEXT_PRE;
237 mszeredi 4 dSP;
238 dpavlin 18 DEBUGf("rmdir begin\n");
239 mszeredi 4 ENTER;
240     SAVETMPS;
241     PUSHMARK(SP);
242     XPUSHs(sv_2mortal(newSVpv(file,0)));
243     PUTBACK;
244     rv = call_sv(_PLfuse_callbacks[6],G_SCALAR);
245     SPAGAIN;
246     if(rv)
247     rv = POPi;
248     else
249     rv = 0;
250     FREETMPS;
251     LEAVE;
252     PUTBACK;
253 dpavlin 18 DEBUGf("rmdir end: %i\n",rv);
254     FUSE_CONTEXT_POST;
255 mszeredi 4 return rv;
256     }
257    
258     int _PLfuse_symlink (const char *file, const char *new) {
259     int rv;
260     SV *rvsv;
261     char *rvstr;
262 dpavlin 18 FUSE_CONTEXT_PRE;
263 mszeredi 4 dSP;
264 dpavlin 18 DEBUGf("symlink begin\n");
265 mszeredi 4 ENTER;
266     SAVETMPS;
267     PUSHMARK(SP);
268     XPUSHs(sv_2mortal(newSVpv(file,0)));
269     XPUSHs(sv_2mortal(newSVpv(new,0)));
270     PUTBACK;
271     rv = call_sv(_PLfuse_callbacks[7],G_SCALAR);
272     SPAGAIN;
273     if(rv)
274     rv = POPi;
275     else
276     rv = 0;
277     FREETMPS;
278     LEAVE;
279     PUTBACK;
280 dpavlin 18 DEBUGf("symlink end: %i\n",rv);
281     FUSE_CONTEXT_POST;
282 mszeredi 4 return rv;
283     }
284    
285     int _PLfuse_rename (const char *file, const char *new) {
286     int rv;
287     SV *rvsv;
288     char *rvstr;
289 dpavlin 18 FUSE_CONTEXT_PRE;
290 mszeredi 4 dSP;
291 dpavlin 18 DEBUGf("rename begin\n");
292 mszeredi 4 ENTER;
293     SAVETMPS;
294     PUSHMARK(SP);
295     XPUSHs(sv_2mortal(newSVpv(file,0)));
296     XPUSHs(sv_2mortal(newSVpv(new,0)));
297     PUTBACK;
298     rv = call_sv(_PLfuse_callbacks[8],G_SCALAR);
299     SPAGAIN;
300     if(rv)
301     rv = POPi;
302     else
303     rv = 0;
304     FREETMPS;
305     LEAVE;
306     PUTBACK;
307 dpavlin 18 DEBUGf("rename end: %i\n",rv);
308     FUSE_CONTEXT_POST;
309 mszeredi 4 return rv;
310     }
311    
312     int _PLfuse_link (const char *file, const char *new) {
313     int rv;
314     SV *rvsv;
315     char *rvstr;
316 dpavlin 18 FUSE_CONTEXT_PRE;
317 mszeredi 4 dSP;
318 dpavlin 18 DEBUGf("link begin\n");
319 mszeredi 4 ENTER;
320     SAVETMPS;
321     PUSHMARK(SP);
322     XPUSHs(sv_2mortal(newSVpv(file,0)));
323     XPUSHs(sv_2mortal(newSVpv(new,0)));
324     PUTBACK;
325     rv = call_sv(_PLfuse_callbacks[9],G_SCALAR);
326     SPAGAIN;
327     if(rv)
328     rv = POPi;
329     else
330     rv = 0;
331     FREETMPS;
332     LEAVE;
333     PUTBACK;
334 dpavlin 18 DEBUGf("link end: %i\n",rv);
335     FUSE_CONTEXT_POST;
336 mszeredi 4 return rv;
337     }
338    
339     int _PLfuse_chmod (const char *file, mode_t mode) {
340     int rv;
341     SV *rvsv;
342     char *rvstr;
343 dpavlin 18 FUSE_CONTEXT_PRE;
344 mszeredi 4 dSP;
345 dpavlin 18 DEBUGf("chmod begin\n");
346 mszeredi 4 ENTER;
347     SAVETMPS;
348     PUSHMARK(SP);
349     XPUSHs(sv_2mortal(newSVpv(file,0)));
350     XPUSHs(sv_2mortal(newSViv(mode)));
351     PUTBACK;
352     rv = call_sv(_PLfuse_callbacks[10],G_SCALAR);
353     SPAGAIN;
354     if(rv)
355     rv = POPi;
356     else
357     rv = 0;
358     FREETMPS;
359     LEAVE;
360     PUTBACK;
361 dpavlin 18 DEBUGf("chmod end: %i\n",rv);
362     FUSE_CONTEXT_POST;
363 mszeredi 4 return rv;
364     }
365    
366     int _PLfuse_chown (const char *file, uid_t uid, gid_t gid) {
367     int rv;
368     SV *rvsv;
369     char *rvstr;
370 dpavlin 18 FUSE_CONTEXT_PRE;
371 mszeredi 4 dSP;
372 dpavlin 18 DEBUGf("chown begin\n");
373 mszeredi 4 ENTER;
374     SAVETMPS;
375     PUSHMARK(SP);
376     XPUSHs(sv_2mortal(newSVpv(file,0)));
377     XPUSHs(sv_2mortal(newSViv(uid)));
378     XPUSHs(sv_2mortal(newSViv(gid)));
379     PUTBACK;
380     rv = call_sv(_PLfuse_callbacks[11],G_SCALAR);
381     SPAGAIN;
382     if(rv)
383     rv = POPi;
384     else
385     rv = 0;
386     FREETMPS;
387     LEAVE;
388     PUTBACK;
389 dpavlin 18 DEBUGf("chown end: %i\n",rv);
390     FUSE_CONTEXT_POST;
391 mszeredi 4 return rv;
392     }
393    
394     int _PLfuse_truncate (const char *file, off_t off) {
395     int rv;
396     SV *rvsv;
397     char *rvstr;
398 dpavlin 18 FUSE_CONTEXT_PRE;
399 mszeredi 4 dSP;
400 dpavlin 18 DEBUGf("truncate begin\n");
401 mszeredi 4 ENTER;
402     SAVETMPS;
403     PUSHMARK(SP);
404     XPUSHs(sv_2mortal(newSVpv(file,0)));
405     XPUSHs(sv_2mortal(newSViv(off)));
406     PUTBACK;
407     rv = call_sv(_PLfuse_callbacks[12],G_SCALAR);
408     SPAGAIN;
409     if(rv)
410     rv = POPi;
411     else
412     rv = 0;
413     FREETMPS;
414     LEAVE;
415     PUTBACK;
416 dpavlin 18 DEBUGf("truncate end: %i\n",rv);
417     FUSE_CONTEXT_POST;
418 mszeredi 4 return rv;
419     }
420    
421     int _PLfuse_utime (const char *file, struct utimbuf *uti) {
422     int rv;
423     SV *rvsv;
424     char *rvstr;
425 dpavlin 18 FUSE_CONTEXT_PRE;
426 mszeredi 4 dSP;
427 dpavlin 18 DEBUGf("utime begin\n");
428 mszeredi 4 ENTER;
429     SAVETMPS;
430     PUSHMARK(SP);
431     XPUSHs(sv_2mortal(newSVpv(file,0)));
432     XPUSHs(sv_2mortal(newSViv(uti->actime)));
433     XPUSHs(sv_2mortal(newSViv(uti->modtime)));
434     PUTBACK;
435     rv = call_sv(_PLfuse_callbacks[13],G_SCALAR);
436     SPAGAIN;
437     if(rv)
438     rv = POPi;
439     else
440     rv = 0;
441     FREETMPS;
442     LEAVE;
443     PUTBACK;
444 dpavlin 18 DEBUGf("utime end: %i\n",rv);
445     FUSE_CONTEXT_POST;
446 mszeredi 4 return rv;
447     }
448    
449     int _PLfuse_open (const char *file, int flags) {
450     int rv;
451     SV *rvsv;
452     char *rvstr;
453 dpavlin 18 FUSE_CONTEXT_PRE;
454 mszeredi 4 dSP;
455 dpavlin 18 DEBUGf("open begin\n");
456 mszeredi 4 ENTER;
457     SAVETMPS;
458     PUSHMARK(SP);
459     XPUSHs(sv_2mortal(newSVpv(file,0)));
460     XPUSHs(sv_2mortal(newSViv(flags)));
461     PUTBACK;
462     rv = call_sv(_PLfuse_callbacks[14],G_SCALAR);
463     SPAGAIN;
464     if(rv)
465     rv = POPi;
466     else
467     rv = 0;
468     FREETMPS;
469     LEAVE;
470     PUTBACK;
471 dpavlin 18 DEBUGf("open end: %i\n",rv);
472     FUSE_CONTEXT_POST;
473 mszeredi 4 return rv;
474     }
475    
476     int _PLfuse_read (const char *file, char *buf, size_t buflen, off_t off) {
477     int rv;
478     char *rvstr;
479 dpavlin 18 FUSE_CONTEXT_PRE;
480 mszeredi 4 dSP;
481 dpavlin 18 DEBUGf("read begin\n");
482 mszeredi 4 ENTER;
483     SAVETMPS;
484     PUSHMARK(SP);
485     XPUSHs(sv_2mortal(newSVpv(file,0)));
486     XPUSHs(sv_2mortal(newSViv(buflen)));
487     XPUSHs(sv_2mortal(newSViv(off)));
488     PUTBACK;
489     rv = call_sv(_PLfuse_callbacks[15],G_SCALAR);
490     SPAGAIN;
491     if(!rv)
492     rv = -ENOENT;
493     else {
494     SV *mysv = POPs;
495     if(SvTYPE(mysv) == SVt_NV || SvTYPE(mysv) == SVt_IV)
496     rv = SvIV(mysv);
497     else {
498     if(SvPOK(mysv)) {
499     rv = SvCUR(mysv);
500     } else {
501     rv = 0;
502     }
503     if(rv > buflen)
504 dpavlin 19 croak("read() handler returned more than buflen! (%i > %i)",rv,buflen);
505 mszeredi 4 if(rv)
506     memcpy(buf,SvPV_nolen(mysv),rv);
507     }
508     }
509     FREETMPS;
510     LEAVE;
511     PUTBACK;
512 dpavlin 18 DEBUGf("read end: %i\n",rv);
513     FUSE_CONTEXT_POST;
514 mszeredi 4 return rv;
515     }
516    
517     int _PLfuse_write (const char *file, const char *buf, size_t buflen, off_t off) {
518     int rv;
519     char *rvstr;
520 dpavlin 18 FUSE_CONTEXT_PRE;
521 mszeredi 4 dSP;
522 dpavlin 18 DEBUGf("write begin\n");
523 mszeredi 4 ENTER;
524     SAVETMPS;
525     PUSHMARK(SP);
526     XPUSHs(sv_2mortal(newSVpv(file,0)));
527     XPUSHs(sv_2mortal(newSVpvn(buf,buflen)));
528     XPUSHs(sv_2mortal(newSViv(off)));
529     PUTBACK;
530     rv = call_sv(_PLfuse_callbacks[16],G_SCALAR);
531     SPAGAIN;
532     if(rv)
533     rv = POPi;
534     else
535     rv = 0;
536     FREETMPS;
537     LEAVE;
538     PUTBACK;
539 dpavlin 18 DEBUGf("write end: %i\n",rv);
540     FUSE_CONTEXT_POST;
541 mszeredi 4 return rv;
542     }
543    
544     int _PLfuse_statfs (const char *file, struct statfs *st) {
545     int rv;
546     char *rvstr;
547 dpavlin 18 FUSE_CONTEXT_PRE;
548 mszeredi 4 dSP;
549 dpavlin 18 DEBUGf("statfs begin\n");
550 mszeredi 4 ENTER;
551     SAVETMPS;
552     PUSHMARK(SP);
553     PUTBACK;
554     rv = call_sv(_PLfuse_callbacks[17],G_ARRAY);
555     SPAGAIN;
556     if(rv > 5) {
557     st->f_bsize = POPi;
558     st->f_bfree = POPi;
559     st->f_blocks = POPi;
560     st->f_ffree = POPi;
561     st->f_files = POPi;
562     st->f_namelen = POPi;
563     if(rv > 6)
564     rv = POPi;
565     else
566     rv = 0;
567     } else
568     if(rv > 1)
569     croak("inappropriate number of returned values from statfs");
570     else
571     if(rv)
572     rv = POPi;
573     else
574     rv = -ENOSYS;
575     FREETMPS;
576     LEAVE;
577     PUTBACK;
578 dpavlin 18 DEBUGf("statfs end: %i\n",rv);
579     FUSE_CONTEXT_POST;
580 mszeredi 4 return rv;
581     }
582    
583 richdawe 14 int _PLfuse_flush (const char *file) {
584     int rv;
585     char *rvstr;
586 dpavlin 18 FUSE_CONTEXT_PRE;
587 richdawe 14 dSP;
588 dpavlin 18 DEBUGf("flush begin\n");
589 richdawe 14 ENTER;
590     SAVETMPS;
591     PUSHMARK(SP);
592     XPUSHs(sv_2mortal(newSVpv(file,0)));
593     PUTBACK;
594     rv = call_sv(_PLfuse_callbacks[18],G_SCALAR);
595     SPAGAIN;
596     if(rv)
597     rv = POPi;
598     else
599     rv = 0;
600     FREETMPS;
601     LEAVE;
602     PUTBACK;
603 dpavlin 18 DEBUGf("flush end: %i\n",rv);
604     FUSE_CONTEXT_POST;
605 richdawe 14 return rv;
606     }
607    
608     int _PLfuse_release (const char *file, int flags) {
609     int rv;
610     char *rvstr;
611 dpavlin 18 FUSE_CONTEXT_PRE;
612 richdawe 14 dSP;
613 dpavlin 18 DEBUGf("release begin\n");
614 richdawe 14 ENTER;
615     SAVETMPS;
616     PUSHMARK(SP);
617     XPUSHs(sv_2mortal(newSVpv(file,0)));
618     XPUSHs(sv_2mortal(newSViv(flags)));
619     PUTBACK;
620     rv = call_sv(_PLfuse_callbacks[19],G_SCALAR);
621     SPAGAIN;
622     if(rv)
623     rv = POPi;
624     else
625     rv = 0;
626     FREETMPS;
627     LEAVE;
628     PUTBACK;
629 dpavlin 18 DEBUGf("release end: %i\n",rv);
630     FUSE_CONTEXT_POST;
631 richdawe 14 return rv;
632     }
633    
634     int _PLfuse_fsync (const char *file, int flags) {
635     int rv;
636     char *rvstr;
637 dpavlin 18 FUSE_CONTEXT_PRE;
638 richdawe 14 dSP;
639 dpavlin 18 DEBUGf("fsync begin\n");
640 richdawe 14 ENTER;
641     SAVETMPS;
642     PUSHMARK(SP);
643     XPUSHs(sv_2mortal(newSVpv(file,0)));
644     XPUSHs(sv_2mortal(newSViv(flags)));
645     PUTBACK;
646     rv = call_sv(_PLfuse_callbacks[20],G_SCALAR);
647     SPAGAIN;
648     if(rv)
649     rv = POPi;
650     else
651     rv = 0;
652     FREETMPS;
653     LEAVE;
654     PUTBACK;
655 dpavlin 18 DEBUGf("fsync end: %i\n",rv);
656     FUSE_CONTEXT_POST;
657 richdawe 14 return rv;
658     }
659    
660     int _PLfuse_setxattr (const char *file, const char *name, const char *buf, size_t buflen, int flags) {
661     int rv;
662     char *rvstr;
663 dpavlin 18 FUSE_CONTEXT_PRE;
664 richdawe 14 dSP;
665 dpavlin 18 DEBUGf("setxattr begin\n");
666 richdawe 14 ENTER;
667     SAVETMPS;
668     PUSHMARK(SP);
669     XPUSHs(sv_2mortal(newSVpv(file,0)));
670     XPUSHs(sv_2mortal(newSVpv(name,0)));
671     XPUSHs(sv_2mortal(newSVpvn(buf,buflen)));
672     XPUSHs(sv_2mortal(newSViv(flags)));
673     PUTBACK;
674     rv = call_sv(_PLfuse_callbacks[21],G_SCALAR);
675     SPAGAIN;
676     if(rv)
677     rv = POPi;
678     else
679     rv = 0;
680     FREETMPS;
681     LEAVE;
682     PUTBACK;
683 dpavlin 18 DEBUGf("setxattr end: %i\n",rv);
684     FUSE_CONTEXT_POST;
685 richdawe 14 return rv;
686     }
687    
688     int _PLfuse_getxattr (const char *file, const char *name, char *buf, size_t buflen) {
689     int rv;
690     char *rvstr;
691 dpavlin 18 FUSE_CONTEXT_PRE;
692 richdawe 14 dSP;
693 dpavlin 18 DEBUGf("getxattr begin\n");
694 richdawe 14 ENTER;
695     SAVETMPS;
696     PUSHMARK(SP);
697     XPUSHs(sv_2mortal(newSVpv(file,0)));
698     XPUSHs(sv_2mortal(newSVpv(name,0)));
699     PUTBACK;
700     rv = call_sv(_PLfuse_callbacks[22],G_SCALAR);
701     SPAGAIN;
702     if(!rv)
703     rv = -ENOENT;
704     else {
705     SV *mysv = POPs;
706    
707     rv = 0;
708     if(SvTYPE(mysv) == SVt_NV || SvTYPE(mysv) == SVt_IV)
709     rv = SvIV(mysv);
710     else {
711     if(SvPOK(mysv)) {
712     rv = SvCUR(mysv);
713     } else {
714     rv = 0;
715     }
716     if ((rv > 0) && (buflen > 0))
717     {
718     if(rv > buflen)
719     rv = -ERANGE;
720     else
721     memcpy(buf,SvPV_nolen(mysv),rv);
722     }
723     }
724     }
725     FREETMPS;
726     LEAVE;
727     PUTBACK;
728 dpavlin 18 DEBUGf("getxattr end: %i\n",rv);
729     FUSE_CONTEXT_POST;
730 richdawe 14 return rv;
731     }
732    
733     int _PLfuse_listxattr (const char *file, char *list, size_t size) {
734     int prv, rv;
735     char *rvstr;
736 dpavlin 18 FUSE_CONTEXT_PRE;
737 richdawe 14 dSP;
738 dpavlin 18 DEBUGf("listxattr begin\n");
739 richdawe 14 ENTER;
740     SAVETMPS;
741     PUSHMARK(SP);
742     XPUSHs(sv_2mortal(newSVpv(file,0)));
743     PUTBACK;
744     prv = call_sv(_PLfuse_callbacks[23],G_ARRAY);
745     SPAGAIN;
746     if(!prv)
747     rv = -ENOENT;
748     else {
749    
750     char *p = list;
751     int spc = size;
752     int total_len = 0;
753     int i;
754    
755     rv = POPi;
756     prv--;
757    
758     /* Always nul terminate */
759     if (list && (size > 0))
760     list[0] = '\0';
761    
762     while (prv > 0)
763     {
764     SV *mysv = POPs;
765     prv--;
766    
767     if (SvPOK(mysv)) {
768     /* Copy nul too */
769     int s = SvCUR(mysv) + 1;
770     total_len += s;
771    
772     if (p && (size > 0) && (spc >= s))
773     {
774     memcpy(p,SvPV_nolen(mysv),s);
775     p += s;
776     spc -= s;
777     }
778     }
779     }
780    
781     /*
782     * If the Perl returned an error, return that.
783     * Otherwise check that the buffer was big enough.
784     */
785     if (rv == 0)
786     {
787     rv = total_len;
788     if ((size > 0) && (size < total_len))
789     rv = -ERANGE;
790     }
791     }
792     FREETMPS;
793     LEAVE;
794     PUTBACK;
795 dpavlin 18 DEBUGf("listxattr end: %i\n",rv);
796     FUSE_CONTEXT_POST;
797 richdawe 14 return rv;
798     }
799    
800     int _PLfuse_removexattr (const char *file, const char *name) {
801     int rv;
802     char *rvstr;
803 dpavlin 18 FUSE_CONTEXT_PRE;
804 richdawe 14 dSP;
805 dpavlin 18 DEBUGf("removexattr begin\n");
806 richdawe 14 ENTER;
807     SAVETMPS;
808     PUSHMARK(SP);
809     XPUSHs(sv_2mortal(newSVpv(file,0)));
810     XPUSHs(sv_2mortal(newSVpv(name,0)));
811     PUTBACK;
812     rv = call_sv(_PLfuse_callbacks[24],G_SCALAR);
813     SPAGAIN;
814     if(rv)
815     rv = POPi;
816     else
817     rv = 0;
818     FREETMPS;
819     LEAVE;
820     PUTBACK;
821 dpavlin 18 DEBUGf("removexattr end: %i\n",rv);
822     FUSE_CONTEXT_POST;
823 richdawe 14 return rv;
824     }
825    
826 mszeredi 4 struct fuse_operations _available_ops = {
827 richdawe 14 getattr: _PLfuse_getattr,
828     readlink: _PLfuse_readlink,
829     getdir: _PLfuse_getdir,
830     mknod: _PLfuse_mknod,
831     mkdir: _PLfuse_mkdir,
832     unlink: _PLfuse_unlink,
833     rmdir: _PLfuse_rmdir,
834     symlink: _PLfuse_symlink,
835     rename: _PLfuse_rename,
836     link: _PLfuse_link,
837     chmod: _PLfuse_chmod,
838     chown: _PLfuse_chown,
839     truncate: _PLfuse_truncate,
840     utime: _PLfuse_utime,
841     open: _PLfuse_open,
842     read: _PLfuse_read,
843     write: _PLfuse_write,
844     statfs: _PLfuse_statfs,
845     flush: _PLfuse_flush,
846     release: _PLfuse_release,
847     fsync: _PLfuse_fsync,
848     setxattr: _PLfuse_setxattr,
849     getxattr: _PLfuse_getxattr,
850     listxattr: _PLfuse_listxattr,
851     removexattr: _PLfuse_removexattr,
852 mszeredi 4 };
853    
854     MODULE = Fuse PACKAGE = Fuse
855     PROTOTYPES: DISABLE
856    
857     void
858     perl_fuse_main(...)
859     PREINIT:
860 dpavlin 19 struct fuse_operations fops =
861     {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
862     NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
863 dpavlin 18 int i, fd, varnum = 0, debug, threaded, have_mnt;
864 mszeredi 4 char *mountpoint;
865 dpavlin 16 char *mountopts;
866 mszeredi 4 STRLEN n_a;
867     STRLEN l;
868     INIT:
869 dpavlin 18 if(items != 29) {
870 mszeredi 4 fprintf(stderr,"Perl<->C inconsistency or internal error\n");
871     XSRETURN_UNDEF;
872     }
873     CODE:
874     debug = SvIV(ST(0));
875 dpavlin 18 threaded = SvIV(ST(1));
876     if(threaded) {
877     #ifdef FUSE_USE_ITHREADS
878     master_interp = PERL_GET_INTERP;
879     #else
880     fprintf(stderr,"FUSE warning: Your script has requested multithreaded "
881     "mode, but your perl was not built with -Dusethreads. "
882     "Threads are disabled.\n");
883     threaded = 0;
884     #endif
885     }
886     mountpoint = SvPV_nolen(ST(2));
887     mountopts = SvPV_nolen(ST(3));
888 richdawe 14 for(i=0;i<N_CALLBACKS;i++) {
889 dpavlin 18 SV *var = ST(i+4);
890 dpavlin 19 /* allow symbolic references, or real code references. */
891     if(SvOK(var) && (SvPOK(var) || (SvROK(var) && SvTYPE(SvRV(var)) == SVt_PVCV))) {
892 dpavlin 18 void **tmp1 = (void**)&_available_ops, **tmp2 = (void**)&fops;
893     tmp2[i] = tmp1[i];
894 dpavlin 19 #ifdef FUSE_USE_ITHREADS
895 dpavlin 18 if(threaded)
896     /* note: under 5.8.7, this croaks for code references. */
897     SvSHARE(var);
898 dpavlin 19 #endif
899 dpavlin 18 _PLfuse_callbacks[i] = var;
900 dpavlin 19 } else
901     if(SvOK(var)) {
902     croak("invalid callback passed to perl_fuse_main "
903     "(%s is not a string, code ref, or undef).\n",
904     i+4,SvPVbyte_nolen(var));
905 mszeredi 4 }
906     }
907     /* FIXME: need to pass fusermount arguments */
908 dpavlin 16 fd = fuse_mount(mountpoint,mountopts);
909 mszeredi 4 if(fd < 0)
910     croak("could not mount fuse filesystem!");
911 dpavlin 18 if(threaded) {
912     fuse_loop_mt(fuse_new(fd,debug ? "debug" : NULL,&fops));
913     } else
914     fuse_loop(fuse_new(fd,debug ? "debug" : NULL,&fops));

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