/[fuse.before_github]/perl-llin/Fuse.xs
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Annotation of /perl-llin/Fuse.xs

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Revision 123 - (hide annotations)
Wed Mar 19 19:40:20 2008 UTC (11 years, 5 months ago) by dpavlin
File size: 18411 byte(s)
another try to fix files larger than 2Gb: for this we pop
float from stack since long is limited to 4Gb
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 dpavlin 93 # define FUSE_CONTEXT_PRE create_perl_context(); { dSP
21 dpavlin 18 # 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 dpavlin 93 # define FUSE_CONTEXT_PRE dSP
28 dpavlin 18 # define FUSE_CONTEXT_POST
29     #endif
30 dpavlin 85 #include <fuse.h>
31 mszeredi 4
32     #undef DEBUGf
33 dpavlin 71 #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 89 int rv;
44 dpavlin 18 FUSE_CONTEXT_PRE;
45     DEBUGf("getattr begin: %s\n",file);
46 mszeredi 4 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 dpavlin 8 result->st_blocks = POPi;
63 mszeredi 4 result->st_blksize = POPi;
64     result->st_ctime = POPi;
65     result->st_mtime = POPi;
66     result->st_atime = POPi;
67 dpavlin 123 result->st_size = POPn; // we pop double here to support files larger than 4Gb (long limit)
68 mszeredi 4 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 dpavlin 89 result->st_ino = POPi;
74 mszeredi 4 result->st_dev = POPi;
75     rv = 0;
76     }
77     FREETMPS;
78     LEAVE;
79     PUTBACK;
80 dpavlin 18 DEBUGf("getattr end: %i\n",rv);
81     FUSE_CONTEXT_POST;
82 mszeredi 4 return rv;
83     }
84    
85     int _PLfuse_readlink(const char *file,char *buf,size_t buflen) {
86     int rv;
87 dpavlin 18 FUSE_CONTEXT_PRE;
88 mszeredi 4 if(buflen < 1)
89     return EINVAL;
90 dpavlin 18 DEBUGf("readlink begin\n");
91 mszeredi 4 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 dpavlin 18 DEBUGf("readlink end: %i\n",rv);
114     FUSE_CONTEXT_POST;
115 mszeredi 4 return rv;
116     }
117    
118 dpavlin 85 #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 mszeredi 4 int _PLfuse_getdir(const char *file, fuse_dirh_t dirh, fuse_dirfil_t dirfil) {
126     int prv, rv;
127 dpavlin 18 FUSE_CONTEXT_PRE;
128     DEBUGf("getdir begin\n");
129 mszeredi 4 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 dpavlin 85 dirfil(dirh,POPp,0,0);
140 mszeredi 4 } else {
141     fprintf(stderr,"getdir() handler returned nothing!\n");
142     rv = -ENOSYS;
143     }
144     FREETMPS;
145     LEAVE;
146     PUTBACK;
147 dpavlin 18 DEBUGf("getdir end: %i\n",rv);
148     FUSE_CONTEXT_POST;
149 mszeredi 4 return rv;
150     }
151    
152     int _PLfuse_mknod (const char *file, mode_t mode, dev_t dev) {
153     int rv;
154 dpavlin 18 FUSE_CONTEXT_PRE;
155     DEBUGf("mknod begin\n");
156 mszeredi 4 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 dpavlin 18 DEBUGf("mknod end: %i\n",rv);
173     FUSE_CONTEXT_POST;
174 mszeredi 4 return rv;
175     }
176    
177     int _PLfuse_mkdir (const char *file, mode_t mode) {
178     int rv;
179 dpavlin 18 FUSE_CONTEXT_PRE;
180     DEBUGf("mkdir begin\n");
181 mszeredi 4 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 dpavlin 18 DEBUGf("mkdir end: %i\n",rv);
197     FUSE_CONTEXT_POST;
198 mszeredi 4 return rv;
199     }
200    
201    
202     int _PLfuse_unlink (const char *file) {
203     int rv;
204 dpavlin 18 FUSE_CONTEXT_PRE;
205     DEBUGf("unlink begin\n");
206 mszeredi 4 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 dpavlin 18 DEBUGf("unlink end: %i\n",rv);
221     FUSE_CONTEXT_POST;
222 mszeredi 4 return rv;
223     }
224    
225     int _PLfuse_rmdir (const char *file) {
226     int rv;
227 dpavlin 18 FUSE_CONTEXT_PRE;
228     DEBUGf("rmdir begin\n");
229 mszeredi 4 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 dpavlin 18 DEBUGf("rmdir end: %i\n",rv);
244     FUSE_CONTEXT_POST;
245 mszeredi 4 return rv;
246     }
247    
248     int _PLfuse_symlink (const char *file, const char *new) {
249     int rv;
250 dpavlin 18 FUSE_CONTEXT_PRE;
251     DEBUGf("symlink begin\n");
252 mszeredi 4 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 dpavlin 18 DEBUGf("symlink end: %i\n",rv);
268     FUSE_CONTEXT_POST;
269 mszeredi 4 return rv;
270     }
271    
272     int _PLfuse_rename (const char *file, const char *new) {
273     int rv;
274 dpavlin 18 FUSE_CONTEXT_PRE;
275     DEBUGf("rename begin\n");
276 mszeredi 4 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 dpavlin 18 DEBUGf("rename end: %i\n",rv);
292     FUSE_CONTEXT_POST;
293 mszeredi 4 return rv;
294     }
295    
296     int _PLfuse_link (const char *file, const char *new) {
297     int rv;
298 dpavlin 18 FUSE_CONTEXT_PRE;
299     DEBUGf("link begin\n");
300 mszeredi 4 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 dpavlin 18 DEBUGf("link end: %i\n",rv);
316     FUSE_CONTEXT_POST;
317 mszeredi 4 return rv;
318     }
319    
320     int _PLfuse_chmod (const char *file, mode_t mode) {
321     int rv;
322 dpavlin 18 FUSE_CONTEXT_PRE;
323     DEBUGf("chmod begin\n");
324 mszeredi 4 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 dpavlin 18 DEBUGf("chmod end: %i\n",rv);
340     FUSE_CONTEXT_POST;
341 mszeredi 4 return rv;
342     }
343    
344     int _PLfuse_chown (const char *file, uid_t uid, gid_t gid) {
345     int rv;
346 dpavlin 18 FUSE_CONTEXT_PRE;
347     DEBUGf("chown begin\n");
348 mszeredi 4 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 dpavlin 18 DEBUGf("chown end: %i\n",rv);
365     FUSE_CONTEXT_POST;
366 mszeredi 4 return rv;
367     }
368    
369     int _PLfuse_truncate (const char *file, off_t off) {
370     int rv;
371 dpavlin 18 FUSE_CONTEXT_PRE;
372     DEBUGf("truncate begin\n");
373 mszeredi 4 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 dpavlin 18 DEBUGf("truncate end: %i\n",rv);
389     FUSE_CONTEXT_POST;
390 mszeredi 4 return rv;
391     }
392    
393     int _PLfuse_utime (const char *file, struct utimbuf *uti) {
394     int rv;
395 dpavlin 18 FUSE_CONTEXT_PRE;
396     DEBUGf("utime begin\n");
397 mszeredi 4 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 dpavlin 18 DEBUGf("utime end: %i\n",rv);
414     FUSE_CONTEXT_POST;
415 mszeredi 4 return rv;
416     }
417    
418 dpavlin 85 int _PLfuse_open (const char *file, struct fuse_file_info *fi) {
419 mszeredi 4 int rv;
420 dpavlin 85 int flags = fi->flags;
421 dpavlin 18 FUSE_CONTEXT_PRE;
422     DEBUGf("open begin\n");
423 mszeredi 4 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 dpavlin 18 DEBUGf("open end: %i\n",rv);
439     FUSE_CONTEXT_POST;
440 mszeredi 4 return rv;
441     }
442    
443 dpavlin 85 int _PLfuse_read (const char *file, char *buf, size_t buflen, off_t off, struct fuse_file_info *fi) {
444 mszeredi 4 int rv;
445 dpavlin 18 FUSE_CONTEXT_PRE;
446     DEBUGf("read begin\n");
447 mszeredi 4 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 dpavlin 19 croak("read() handler returned more than buflen! (%i > %i)",rv,buflen);
470 mszeredi 4 if(rv)
471     memcpy(buf,SvPV_nolen(mysv),rv);
472     }
473     }
474     FREETMPS;
475     LEAVE;
476     PUTBACK;
477 dpavlin 18 DEBUGf("read end: %i\n",rv);
478     FUSE_CONTEXT_POST;
479 mszeredi 4 return rv;
480     }
481    
482 dpavlin 85 int _PLfuse_write (const char *file, const char *buf, size_t buflen, off_t off, struct fuse_file_info *fi) {
483 mszeredi 4 int rv;
484 dpavlin 18 FUSE_CONTEXT_PRE;
485     DEBUGf("write begin\n");
486 mszeredi 4 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 dpavlin 18 DEBUGf("write end: %i\n",rv);
503     FUSE_CONTEXT_POST;
504 mszeredi 4 return rv;
505     }
506    
507 dpavlin 85 int _PLfuse_statfs (const char *file, struct statvfs *st) {
508 mszeredi 4 int rv;
509 dpavlin 18 FUSE_CONTEXT_PRE;
510     DEBUGf("statfs begin\n");
511 mszeredi 4 ENTER;
512     SAVETMPS;
513     PUSHMARK(SP);
514     PUTBACK;
515     rv = call_sv(_PLfuse_callbacks[17],G_ARRAY);
516     SPAGAIN;
517 dpavlin 28 DEBUGf("statfs got %i params\n",rv);
518     if(rv == 6 || rv == 7) {
519 dpavlin 68 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 dpavlin 26 st->f_frsize = 4096;
528     st->f_flag = 0;
529 dpavlin 68 st->f_bavail = st->f_bfree;
530     st->f_favail = st->f_ffree;
531 dpavlin 26
532 dpavlin 28 if(rv == 7)
533 mszeredi 4 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 dpavlin 18 DEBUGf("statfs end: %i\n",rv);
548     FUSE_CONTEXT_POST;
549 mszeredi 4 return rv;
550     }
551    
552 dpavlin 85 int _PLfuse_flush (const char *file, struct fuse_file_info *fi) {
553 richdawe 14 int rv;
554 dpavlin 18 FUSE_CONTEXT_PRE;
555     DEBUGf("flush begin\n");
556 richdawe 14 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 dpavlin 18 DEBUGf("flush end: %i\n",rv);
571     FUSE_CONTEXT_POST;
572 richdawe 14 return rv;
573     }
574    
575 dpavlin 85 int _PLfuse_release (const char *file, struct fuse_file_info *fi) {
576 richdawe 14 int rv;
577 dpavlin 85 int flags = fi->flags;
578 dpavlin 18 FUSE_CONTEXT_PRE;
579     DEBUGf("release begin\n");
580 richdawe 14 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 dpavlin 18 DEBUGf("release end: %i\n",rv);
596     FUSE_CONTEXT_POST;
597 richdawe 14 return rv;
598     }
599    
600 dpavlin 85 int _PLfuse_fsync (const char *file, int datasync, struct fuse_file_info *fi) {
601 richdawe 14 int rv;
602 dpavlin 85 int flags = fi->flags;
603 dpavlin 18 FUSE_CONTEXT_PRE;
604     DEBUGf("fsync begin\n");
605 richdawe 14 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 dpavlin 18 DEBUGf("fsync end: %i\n",rv);
621     FUSE_CONTEXT_POST;
622 richdawe 14 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 dpavlin 18 FUSE_CONTEXT_PRE;
628     DEBUGf("setxattr begin\n");
629 richdawe 14 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 dpavlin 18 DEBUGf("setxattr end: %i\n",rv);
647     FUSE_CONTEXT_POST;
648 richdawe 14 return rv;
649     }
650    
651     int _PLfuse_getxattr (const char *file, const char *name, char *buf, size_t buflen) {
652     int rv;
653 dpavlin 18 FUSE_CONTEXT_PRE;
654     DEBUGf("getxattr begin\n");
655 richdawe 14 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 dpavlin 18 DEBUGf("getxattr end: %i\n",rv);
690     FUSE_CONTEXT_POST;
691 richdawe 14 return rv;
692     }
693    
694     int _PLfuse_listxattr (const char *file, char *list, size_t size) {
695     int prv, rv;
696 dpavlin 18 FUSE_CONTEXT_PRE;
697     DEBUGf("listxattr begin\n");
698 richdawe 14 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 dpavlin 18 DEBUGf("listxattr end: %i\n",rv);
754     FUSE_CONTEXT_POST;
755 richdawe 14 return rv;
756     }
757    
758     int _PLfuse_removexattr (const char *file, const char *name) {
759     int rv;
760 dpavlin 18 FUSE_CONTEXT_PRE;
761     DEBUGf("removexattr begin\n");
762 richdawe 14 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 dpavlin 18 DEBUGf("removexattr end: %i\n",rv);
778     FUSE_CONTEXT_POST;
779 richdawe 14 return rv;
780     }
781    
782 mszeredi 4 struct fuse_operations _available_ops = {
783 richdawe 14 getattr: _PLfuse_getattr,
784     readlink: _PLfuse_readlink,
785     getdir: _PLfuse_getdir,
786 dpavlin 85 #if 0
787     readdir: _PLfuse_readdir,
788     #endif
789 richdawe 14 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 mszeredi 4 };
812    
813     MODULE = Fuse PACKAGE = Fuse
814     PROTOTYPES: DISABLE
815    
816 dpavlin 108 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 mszeredi 4 void
835     perl_fuse_main(...)
836     PREINIT:
837 dpavlin 19 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 dpavlin 89 int i, fd, debug, threaded;
841 mszeredi 4 char *mountpoint;
842 dpavlin 16 char *mountopts;
843 dpavlin 85 struct fuse_args margs = FUSE_ARGS_INIT(0, NULL);
844     struct fuse_args fargs = FUSE_ARGS_INIT(0, NULL);
845 mszeredi 4 INIT:
846 dpavlin 18 if(items != 29) {
847 mszeredi 4 fprintf(stderr,"Perl<->C inconsistency or internal error\n");
848     XSRETURN_UNDEF;
849     }
850     CODE:
851     debug = SvIV(ST(0));
852 dpavlin 18 threaded = SvIV(ST(1));
853     if(threaded) {
854     #ifdef FUSE_USE_ITHREADS
855 dpavlin 101 master_interp = PERL_GET_CONTEXT;
856 dpavlin 18 #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 richdawe 14 for(i=0;i<N_CALLBACKS;i++) {
866 dpavlin 18 SV *var = ST(i+4);
867 dpavlin 19 /* allow symbolic references, or real code references. */
868     if(SvOK(var) && (SvPOK(var) || (SvROK(var) && SvTYPE(SvRV(var)) == SVt_PVCV))) {
869 dpavlin 18 void **tmp1 = (void**)&_available_ops, **tmp2 = (void**)&fops;
870     tmp2[i] = tmp1[i];
871 dpavlin 19 #ifdef FUSE_USE_ITHREADS
872 dpavlin 18 if(threaded)
873     /* note: under 5.8.7, this croaks for code references. */
874     SvSHARE(var);
875 dpavlin 19 #endif
876 dpavlin 18 _PLfuse_callbacks[i] = var;
877 dpavlin 19 } 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 mszeredi 4 }
883     }
884 dpavlin 85 /*
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 mszeredi 4 if(fd < 0)
899 dpavlin 87 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 dpavlin 85 }
910 dpavlin 87
911 dpavlin 18 if(threaded) {
912 dpavlin 92 fuse_loop_mt(fuse_new(fd,&fargs,&fops,sizeof(fops)));
913 dpavlin 18 } else
914 dpavlin 92 fuse_loop(fuse_new(fd,&fargs,&fops,sizeof(fops)));
915 dpavlin 85 fuse_opt_free_args(&fargs);

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