7 /* perl implements threads with pthread. So, we use the pthread API for
8 * handling thread-local storage. */
10 PerlInterpreter *master_interp = NULL;
11 static inline void create_perl_context() {
13 PerlInterpreter *me = PERL_GET_CONTEXT;
15 PERL_SET_CONTEXT(master_interp);
16 me = perl_clone(master_interp, CLONEf_CLONE_HOST);
20 # define FUSE_CONTEXT_PRE create_perl_context(); {
21 # define FUSE_CONTEXT_POST }
22 # define FUSE_USE_ITHREADS
24 # error "Sorry, I don't know how to handle ithreads on this architecture."
27 # define FUSE_CONTEXT_PRE
28 # define FUSE_CONTEXT_POST
30 #include <fuse/fuse.h>
34 #define DEBUGf(f, a...) fprintf(stderr, "%s:%d (%i): " f,__BASE_FILE__,__LINE__,sp-PL_stack_base ,##a )
39 #define N_CALLBACKS 25
40 SV *_PLfuse_callbacks[N_CALLBACKS];
42 int _PLfuse_getattr(const char *file, struct stat *result) {
46 DEBUGf("getattr begin: %s\n",file);
50 XPUSHs(sv_2mortal(newSVpv(file,strlen(file))));
52 rv = call_sv(_PLfuse_callbacks[0],G_ARRAY);
56 fprintf(stderr,"inappropriate number of returned values from getattr\n");
63 result->st_blocks = POPi;
64 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;
81 DEBUGf("getattr end: %i\n",rv);
86 int _PLfuse_readlink(const char *file,char *buf,size_t buflen) {
94 DEBUGf("readlink begin\n");
98 XPUSHs(sv_2mortal(newSVpv(file,0)));
100 rv = call_sv(_PLfuse_callbacks[1],G_SCALAR);
106 if(SvTYPE(mysv) == SVt_IV || SvTYPE(mysv) == SVt_NV)
109 strncpy(buf,SvPV_nolen(mysv),buflen);
117 DEBUGf("readlink end: %i\n",rv);
122 int _PLfuse_getdir(const char *file, fuse_dirh_t dirh, fuse_dirfil_t dirfil) {
126 DEBUGf("getdir begin\n");
130 XPUSHs(sv_2mortal(newSVpv(file,0)));
132 prv = call_sv(_PLfuse_callbacks[2],G_ARRAY);
139 fprintf(stderr,"getdir() handler returned nothing!\n");
145 DEBUGf("getdir end: %i\n",rv);
150 int _PLfuse_mknod (const char *file, mode_t mode, dev_t dev) {
156 DEBUGf("mknod begin\n");
160 XPUSHs(sv_2mortal(newSVpv(file,0)));
161 XPUSHs(sv_2mortal(newSViv(mode)));
162 XPUSHs(sv_2mortal(newSViv(dev)));
164 rv = call_sv(_PLfuse_callbacks[3],G_SCALAR);
173 DEBUGf("mknod end: %i\n",rv);
178 int _PLfuse_mkdir (const char *file, mode_t mode) {
184 DEBUGf("mkdir begin\n");
188 XPUSHs(sv_2mortal(newSVpv(file,0)));
189 XPUSHs(sv_2mortal(newSViv(mode)));
191 rv = call_sv(_PLfuse_callbacks[4],G_SCALAR);
200 DEBUGf("mkdir end: %i\n",rv);
206 int _PLfuse_unlink (const char *file) {
212 DEBUGf("unlink begin\n");
216 XPUSHs(sv_2mortal(newSVpv(file,0)));
218 rv = call_sv(_PLfuse_callbacks[5],G_SCALAR);
227 DEBUGf("unlink end: %i\n",rv);
232 int _PLfuse_rmdir (const char *file) {
238 DEBUGf("rmdir begin\n");
242 XPUSHs(sv_2mortal(newSVpv(file,0)));
244 rv = call_sv(_PLfuse_callbacks[6],G_SCALAR);
253 DEBUGf("rmdir end: %i\n",rv);
258 int _PLfuse_symlink (const char *file, const char *new) {
264 DEBUGf("symlink begin\n");
268 XPUSHs(sv_2mortal(newSVpv(file,0)));
269 XPUSHs(sv_2mortal(newSVpv(new,0)));
271 rv = call_sv(_PLfuse_callbacks[7],G_SCALAR);
280 DEBUGf("symlink end: %i\n",rv);
285 int _PLfuse_rename (const char *file, const char *new) {
291 DEBUGf("rename begin\n");
295 XPUSHs(sv_2mortal(newSVpv(file,0)));
296 XPUSHs(sv_2mortal(newSVpv(new,0)));
298 rv = call_sv(_PLfuse_callbacks[8],G_SCALAR);
307 DEBUGf("rename end: %i\n",rv);
312 int _PLfuse_link (const char *file, const char *new) {
318 DEBUGf("link begin\n");
322 XPUSHs(sv_2mortal(newSVpv(file,0)));
323 XPUSHs(sv_2mortal(newSVpv(new,0)));
325 rv = call_sv(_PLfuse_callbacks[9],G_SCALAR);
334 DEBUGf("link end: %i\n",rv);
339 int _PLfuse_chmod (const char *file, mode_t mode) {
345 DEBUGf("chmod begin\n");
349 XPUSHs(sv_2mortal(newSVpv(file,0)));
350 XPUSHs(sv_2mortal(newSViv(mode)));
352 rv = call_sv(_PLfuse_callbacks[10],G_SCALAR);
361 DEBUGf("chmod end: %i\n",rv);
366 int _PLfuse_chown (const char *file, uid_t uid, gid_t gid) {
372 DEBUGf("chown begin\n");
376 XPUSHs(sv_2mortal(newSVpv(file,0)));
377 XPUSHs(sv_2mortal(newSViv(uid)));
378 XPUSHs(sv_2mortal(newSViv(gid)));
380 rv = call_sv(_PLfuse_callbacks[11],G_SCALAR);
389 DEBUGf("chown end: %i\n",rv);
394 int _PLfuse_truncate (const char *file, off_t off) {
400 DEBUGf("truncate begin\n");
404 XPUSHs(sv_2mortal(newSVpv(file,0)));
405 XPUSHs(sv_2mortal(newSViv(off)));
407 rv = call_sv(_PLfuse_callbacks[12],G_SCALAR);
416 DEBUGf("truncate end: %i\n",rv);
421 int _PLfuse_utime (const char *file, struct utimbuf *uti) {
427 DEBUGf("utime begin\n");
431 XPUSHs(sv_2mortal(newSVpv(file,0)));
432 XPUSHs(sv_2mortal(newSViv(uti->actime)));
433 XPUSHs(sv_2mortal(newSViv(uti->modtime)));
435 rv = call_sv(_PLfuse_callbacks[13],G_SCALAR);
444 DEBUGf("utime end: %i\n",rv);
449 int _PLfuse_open (const char *file, int flags) {
455 DEBUGf("open begin\n");
459 XPUSHs(sv_2mortal(newSVpv(file,0)));
460 XPUSHs(sv_2mortal(newSViv(flags)));
462 rv = call_sv(_PLfuse_callbacks[14],G_SCALAR);
471 DEBUGf("open end: %i\n",rv);
476 int _PLfuse_read (const char *file, char *buf, size_t buflen, off_t off) {
481 DEBUGf("read begin\n");
485 XPUSHs(sv_2mortal(newSVpv(file,0)));
486 XPUSHs(sv_2mortal(newSViv(buflen)));
487 XPUSHs(sv_2mortal(newSViv(off)));
489 rv = call_sv(_PLfuse_callbacks[15],G_SCALAR);
495 if(SvTYPE(mysv) == SVt_NV || SvTYPE(mysv) == SVt_IV)
504 croak("read() handler returned more than buflen! (%i > %i)",rv,buflen);
506 memcpy(buf,SvPV_nolen(mysv),rv);
512 DEBUGf("read end: %i\n",rv);
517 int _PLfuse_write (const char *file, const char *buf, size_t buflen, off_t off) {
522 DEBUGf("write begin\n");
526 XPUSHs(sv_2mortal(newSVpv(file,0)));
527 XPUSHs(sv_2mortal(newSVpvn(buf,buflen)));
528 XPUSHs(sv_2mortal(newSViv(off)));
530 rv = call_sv(_PLfuse_callbacks[16],G_SCALAR);
539 DEBUGf("write end: %i\n",rv);
544 /* FIXME check for old fuse API (< 21?) and use statfs here */
545 int _PLfuse_statfs (const char *file, struct statvfs *st) {
550 DEBUGf("statfs begin\n");
555 rv = call_sv(_PLfuse_callbacks[17],G_ARRAY);
559 st->f_bfree = st->f_bavail = POPi;
561 st->f_ffree = st->f_favail = POPi;
563 st->f_namemax = POPi;
575 croak("inappropriate number of returned values from statfs");
584 DEBUGf("statfs end: %i\n",rv);
589 int _PLfuse_flush (const char *file) {
594 DEBUGf("flush begin\n");
598 XPUSHs(sv_2mortal(newSVpv(file,0)));
600 rv = call_sv(_PLfuse_callbacks[18],G_SCALAR);
609 DEBUGf("flush end: %i\n",rv);
614 int _PLfuse_release (const char *file, int flags) {
619 DEBUGf("release begin\n");
623 XPUSHs(sv_2mortal(newSVpv(file,0)));
624 XPUSHs(sv_2mortal(newSViv(flags)));
626 rv = call_sv(_PLfuse_callbacks[19],G_SCALAR);
635 DEBUGf("release end: %i\n",rv);
640 int _PLfuse_fsync (const char *file, int flags) {
645 DEBUGf("fsync begin\n");
649 XPUSHs(sv_2mortal(newSVpv(file,0)));
650 XPUSHs(sv_2mortal(newSViv(flags)));
652 rv = call_sv(_PLfuse_callbacks[20],G_SCALAR);
661 DEBUGf("fsync end: %i\n",rv);
666 int _PLfuse_setxattr (const char *file, const char *name, const char *buf, size_t buflen, int flags) {
671 DEBUGf("setxattr begin\n");
675 XPUSHs(sv_2mortal(newSVpv(file,0)));
676 XPUSHs(sv_2mortal(newSVpv(name,0)));
677 XPUSHs(sv_2mortal(newSVpvn(buf,buflen)));
678 XPUSHs(sv_2mortal(newSViv(flags)));
680 rv = call_sv(_PLfuse_callbacks[21],G_SCALAR);
689 DEBUGf("setxattr end: %i\n",rv);
694 int _PLfuse_getxattr (const char *file, const char *name, char *buf, size_t buflen) {
699 DEBUGf("getxattr begin\n");
703 XPUSHs(sv_2mortal(newSVpv(file,0)));
704 XPUSHs(sv_2mortal(newSVpv(name,0)));
706 rv = call_sv(_PLfuse_callbacks[22],G_SCALAR);
714 if(SvTYPE(mysv) == SVt_NV || SvTYPE(mysv) == SVt_IV)
722 if ((rv > 0) && (buflen > 0))
727 memcpy(buf,SvPV_nolen(mysv),rv);
734 DEBUGf("getxattr end: %i\n",rv);
739 int _PLfuse_listxattr (const char *file, char *list, size_t size) {
744 DEBUGf("listxattr begin\n");
748 XPUSHs(sv_2mortal(newSVpv(file,0)));
750 prv = call_sv(_PLfuse_callbacks[23],G_ARRAY);
764 /* Always nul terminate */
765 if (list && (size > 0))
775 int s = SvCUR(mysv) + 1;
778 if (p && (size > 0) && (spc >= s))
780 memcpy(p,SvPV_nolen(mysv),s);
788 * If the Perl returned an error, return that.
789 * Otherwise check that the buffer was big enough.
794 if ((size > 0) && (size < total_len))
801 DEBUGf("listxattr end: %i\n",rv);
806 int _PLfuse_removexattr (const char *file, const char *name) {
811 DEBUGf("removexattr begin\n");
815 XPUSHs(sv_2mortal(newSVpv(file,0)));
816 XPUSHs(sv_2mortal(newSVpv(name,0)));
818 rv = call_sv(_PLfuse_callbacks[24],G_SCALAR);
827 DEBUGf("removexattr end: %i\n",rv);
832 struct fuse_operations _available_ops = {
833 getattr: _PLfuse_getattr,
834 readlink: _PLfuse_readlink,
835 getdir: _PLfuse_getdir,
836 mknod: _PLfuse_mknod,
837 mkdir: _PLfuse_mkdir,
838 unlink: _PLfuse_unlink,
839 rmdir: _PLfuse_rmdir,
840 symlink: _PLfuse_symlink,
841 rename: _PLfuse_rename,
843 chmod: _PLfuse_chmod,
844 chown: _PLfuse_chown,
845 truncate: _PLfuse_truncate,
846 utime: _PLfuse_utime,
849 write: _PLfuse_write,
850 statfs: _PLfuse_statfs,
851 flush: _PLfuse_flush,
852 release: _PLfuse_release,
853 fsync: _PLfuse_fsync,
854 setxattr: _PLfuse_setxattr,
855 getxattr: _PLfuse_getxattr,
856 listxattr: _PLfuse_listxattr,
857 removexattr: _PLfuse_removexattr,
860 MODULE = Fuse PACKAGE = Fuse
866 struct fuse_operations fops =
867 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
868 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
869 int i, fd, varnum = 0, debug, threaded, have_mnt;
876 fprintf(stderr,"Perl<->C inconsistency or internal error\n");
881 threaded = SvIV(ST(1));
883 #ifdef FUSE_USE_ITHREADS
884 master_interp = PERL_GET_INTERP;
886 fprintf(stderr,"FUSE warning: Your script has requested multithreaded "
887 "mode, but your perl was not built with -Dusethreads. "
888 "Threads are disabled.\n");
892 mountpoint = SvPV_nolen(ST(2));
893 mountopts = SvPV_nolen(ST(3));
894 for(i=0;i<N_CALLBACKS;i++) {
896 /* allow symbolic references, or real code references. */
897 if(SvOK(var) && (SvPOK(var) || (SvROK(var) && SvTYPE(SvRV(var)) == SVt_PVCV))) {
898 void **tmp1 = (void**)&_available_ops, **tmp2 = (void**)&fops;
900 #ifdef FUSE_USE_ITHREADS
902 /* note: under 5.8.7, this croaks for code references. */
905 _PLfuse_callbacks[i] = var;
908 croak("invalid callback passed to perl_fuse_main "
909 "(%s is not a string, code ref, or undef).\n",
910 i+4,SvPVbyte_nolen(var));
913 /* FIXME: need to pass fusermount arguments */
914 fd = fuse_mount(mountpoint,mountopts);
916 croak("could not mount fuse filesystem!");
918 fuse_loop_mt(fuse_new(fd,debug ? "debug" : NULL,&fops));
920 fuse_loop(fuse_new(fd,debug ? "debug" : NULL,&fops));