Fixing ioctl on 32bit arches.
[perl-fuse.git] / Fuse.xs
diff --git a/Fuse.xs b/Fuse.xs
index 3a09519..814fb47 100755 (executable)
--- a/Fuse.xs
+++ b/Fuse.xs
@@ -3,13 +3,59 @@
 #include "perl.h"
 #include "XSUB.h"
 
-#include <sys/xattr.h>
 #include <fuse.h>
 
+#if (defined(__FreeBSD__) && __FreeBSD__ < 10) || defined(__NetBSD__)
+# define XATTR_CREATE 1
+# define XATTR_REPLACE 2
+#else
+# include <sys/xattr.h>
+#endif
+
+#if defined(__linux__)
+# define STAT_NSEC(st, st_xtim) ((st)->st_xtim.tv_nsec)
+#else
+# define STAT_NSEC(st, st_xtim) ((st)->st_xtim##espec.tv_nsec)
+#endif
+
+/* Implement a macro to handle multiple formats (integer, float, and array
+ * containing seconds and nanoseconds). */
+#define PULL_TIME(st, st_xtim, svp)                                    \
+{                                                                      \
+       SV *sv = svp;                                                   \
+       if (SvROK(sv)) {                                                \
+               AV *av = (AV *)SvRV(sv);                                \
+               if (SvTYPE((SV *)av) != SVt_PVAV) {                     \
+                       Perl_croak_nocontext("Reference was not array ref"); \
+               }                                                       \
+               if (av_len(av) != 1) {                                  \
+                       Perl_croak_nocontext("Array of incorrect dimension"); \
+               }                                                       \
+               (st)->st_xtim##e = SvIV(*(av_fetch(av, 0, FALSE)));     \
+               STAT_NSEC(st, st_xtim) = SvIV(*(av_fetch(av, 1, FALSE))); \
+       }                                                               \
+       else if (SvNOK(sv) || SvIOK(sv)) {                              \
+               double tm = SvNV(sv);                                   \
+               (st)->st_xtim##e = (int)tm;                             \
+               STAT_NSEC(st, st_xtim) = (tm - (int)tm) * 1000000000;   \
+       }                                                               \
+       else {                                                          \
+               Perl_croak_nocontext("Invalid data type passed");       \
+       }                                                               \
+}
+
 /* Determine if threads support should be included */
 #ifdef USE_ITHREADS
 # ifdef I_PTHREAD
 #  define FUSE_USE_ITHREADS
+#  if (PERL_VERSION < 8) || (PERL_VERSION == 8 && PERL_SUBVERSION < 9)
+#    define tTHX PerlInterpreter*
+#    define STR_WITH_LEN(s)  ("" s ""), (sizeof(s)-1)
+#    define hv_fetchs(hv,key,lval) Perl_hv_fetch(aTHX_ hv, STR_WITH_LEN(key), lval)
+#    define dMY_CXT_INTERP(interp) \
+       SV *my_cxt_sv = *hv_fetchs(interp->Imodglobal, MY_CXT_KEY, TRUE); \
+       my_cxt_t *my_cxtp = INT2PTR(my_cxt_t*, SvUV(my_cxt_sv))
+#  endif
 # else
 #  warning "Sorry, I don't know how to handle ithreads on this architecture. Building non-threaded version"
 # endif
@@ -18,9 +64,9 @@
 /* Global Data */
 
 #define MY_CXT_KEY "Fuse::_guts" XS_VERSION
-/* #if FUSE_VERSION >= 28
-# define N_CALLBACKS 41 */
-#if FUSE_VERSION >= 26
+#if FUSE_VERSION >= 28
+# define N_CALLBACKS 41
+#elif FUSE_VERSION >= 26
 # define N_CALLBACKS 38
 #elif FUSE_VERSION >= 25
 # define N_CALLBACKS 35
 typedef struct {
        SV *callback[N_CALLBACKS];
        HV *handles;
+#ifdef USE_ITHREADS
        tTHX self;
+#endif
        int threaded;
+#ifdef USE_ITHREADS
        perl_mutex mutex;
+#endif
+       int utimens_as_array;
 } my_cxt_t;
 START_MY_CXT;
 
@@ -44,6 +95,9 @@ tTHX master_interp = NULL;
 
 #define CLONE_INTERP(parent) S_clone_interp(parent)
 tTHX S_clone_interp(tTHX parent) {
+#  if (PERL_VERSION < 10)
+       tTHX my_perl = parent;
+#endif
        dMY_CXT_INTERP(parent);
        if(MY_CXT.threaded) {
                MUTEX_LOCK(&MY_CXT.mutex);
@@ -108,8 +162,10 @@ void S_fh_store_handle(pTHX_ pMY_CXT_ struct fuse_file_info *fi, SV *sv) {
                        SvSHARE(sv);
                }
 #endif
-               MAGIC *mg = (SvTYPE(sv) == SVt_PVMG) ? mg_find(sv, PERL_MAGIC_shared_scalar) : NULL;
-               fi->fh = mg ? PTR2IV(mg->mg_ptr) : PTR2IV(sv);
+        /* This seems to be screwing things up... */
+               // MAGIC *mg = (SvTYPE(sv) == SVt_PVMG) ? mg_find(sv, PERL_MAGIC_shared_scalar) : NULL;
+               // fi->fh = mg ? PTR2IV(mg->mg_ptr) : PTR2IV(sv);
+               fi->fh = PTR2IV(sv);
                if(hv_store_ent(MY_CXT.handles, FH_KEY(fi), SvREFCNT_inc(sv), 0) == NULL) {
                        SvREFCNT_dec(sv);
                }
@@ -139,9 +195,9 @@ int _PLfuse_getattr(const char *file, struct stat *result) {
        } else {
                result->st_blocks = POPi;
                result->st_blksize = POPi;
-               result->st_ctime = POPi;
-               result->st_mtime = POPi;
-               result->st_atime = POPi;
+               PULL_TIME(result, st_ctim, POPs);
+               PULL_TIME(result, st_mtim, POPs);
+               PULL_TIME(result, st_atim, POPs);
                result->st_size = POPn; // we pop double here to support files larger than 4Gb (long limit)
                result->st_rdev = POPi;
                result->st_gid = POPi;
@@ -489,7 +545,7 @@ int _PLfuse_open (const char *file, struct fuse_file_info *fi) {
        (void) hv_store(fihash, "direct_io",    9, newSViv(fi->direct_io),   0);
        (void) hv_store(fihash, "keep_cache",  10, newSViv(fi->keep_cache),  0);
 #endif
-#if FUSE_VERSION >= 29
+#if FUSE_VERSION >= 28
        (void) hv_store(fihash, "nonseekable", 11, newSViv(fi->nonseekable), 0);
 #endif
        XPUSHs(sv_2mortal(newRV_noinc((SV*) fihash)));
@@ -517,7 +573,7 @@ int _PLfuse_open (const char *file, struct fuse_file_info *fi) {
                if ((svp = hv_fetch(fihash, "keep_cache",  10, 0)) != NULL)
                        fi->keep_cache  = SvIV(*svp);
 #endif
-#if FUSE_VERSION >= 29
+#if FUSE_VERSION >= 28
                if ((svp = hv_fetch(fihash, "nonseekable", 11, 0)) != NULL)
                        fi->nonseekable = SvIV(*svp);
 #endif
@@ -727,7 +783,11 @@ int _PLfuse_fsync (const char *file, int datasync, struct fuse_file_info *fi) {
        return rv;
 }
 
+#if __FreeBSD__ >= 10
+int _PLfuse_setxattr (const char *file, const char *name, const char *buf, size_t buflen, int flags, uint32_t position) {
+#else
 int _PLfuse_setxattr (const char *file, const char *name, const char *buf, size_t buflen, int flags) {
+#endif
        int rv;
        FUSE_CONTEXT_PRE;
        DEBUGf("setxattr begin\n");
@@ -750,7 +810,11 @@ int _PLfuse_setxattr (const char *file, const char *name, const char *buf, size_
        return rv;
 }
 
+#if __FreeBSD__ >= 10
+int _PLfuse_getxattr (const char *file, const char *name, char *buf, size_t buflen, uint32_t position) {
+#else
 int _PLfuse_getxattr (const char *file, const char *name, char *buf, size_t buflen) {
+#endif
        int rv;
        FUSE_CONTEXT_PRE;
        DEBUGf("getxattr begin\n");
@@ -966,9 +1030,9 @@ int _PLfuse_readdir(const char *file, void *dirh, fuse_fill_dir_t dirfil,
                                                st.st_gid     = SvIV(*(av_fetch(av2,  5, FALSE)));
                                                st.st_rdev    = SvIV(*(av_fetch(av2,  6, FALSE)));
                                                st.st_size    = SvNV(*(av_fetch(av2,  7, FALSE)));
-                                               st.st_atime   = SvIV(*(av_fetch(av2,  8, FALSE)));
-                                               st.st_mtime   = SvIV(*(av_fetch(av2,  9, FALSE)));
-                                               st.st_ctime   = SvIV(*(av_fetch(av2, 10, FALSE)));
+                                               PULL_TIME(&st, st_atim, *(av_fetch(av2,  8, FALSE)));
+                                               PULL_TIME(&st, st_mtim, *(av_fetch(av2,  9, FALSE)));
+                                               PULL_TIME(&st, st_ctim, *(av_fetch(av2, 10, FALSE)));
                                                st.st_blksize = SvIV(*(av_fetch(av2, 11, FALSE)));
                                                st.st_blocks  = SvIV(*(av_fetch(av2, 12, FALSE)));
                                                st_filled = 1;
@@ -1139,7 +1203,7 @@ int _PLfuse_create(const char *file, mode_t mode, struct fuse_file_info *fi) {
        fihash = newHV();
        (void) hv_store(fihash, "direct_io",    9, newSViv(fi->direct_io),   0);
        (void) hv_store(fihash, "keep_cache",  10, newSViv(fi->keep_cache),  0);
-#if FUSE_VERSION >= 29
+#if FUSE_VERSION >= 28
        (void) hv_store(fihash, "nonseekable", 11, newSViv(fi->nonseekable), 0);
 #endif
        XPUSHs(sv_2mortal(newRV_noinc((SV*) fihash)));
@@ -1165,7 +1229,7 @@ int _PLfuse_create(const char *file, mode_t mode, struct fuse_file_info *fi) {
                        fi->direct_io   = SvIV(*svp);
                if ((svp = hv_fetch(fihash, "keep_cache",  10, 0)) != NULL)
                        fi->keep_cache  = SvIV(*svp);
-#if FUSE_VERSION >= 29
+#if FUSE_VERSION >= 28
                if ((svp = hv_fetch(fihash, "nonseekable", 11, 0)) != NULL)
                        fi->nonseekable = SvIV(*svp);
 #endif
@@ -1234,9 +1298,9 @@ int _PLfuse_fgetattr(const char *file, struct stat *result,
        } else {
                result->st_blocks = POPi;
                result->st_blksize = POPi;
-               result->st_ctime = POPi;
-               result->st_mtime = POPi;
-               result->st_atime = POPi;
+               PULL_TIME(result, st_ctim, POPs);
+               PULL_TIME(result, st_mtim, POPs);
+               PULL_TIME(result, st_atim, POPs);
                result->st_size = POPn; // we pop double here to support files larger than 4Gb (long limit)
                result->st_rdev = POPi;
                result->st_gid = POPi;
@@ -1334,8 +1398,30 @@ int _PLfuse_utimens(const char *file, const struct timespec tv[2]) {
        SAVETMPS;
        PUSHMARK(SP);
        XPUSHs(sv_2mortal(newSVpv(file,0)));
-       XPUSHs(tv ? sv_2mortal(newSVnv(tv[0].tv_sec + (tv[0].tv_nsec / 1000000000.0))) : &PL_sv_undef);
-       XPUSHs(tv ? sv_2mortal(newSVnv(tv[1].tv_sec + (tv[1].tv_nsec / 1000000000.0))) : &PL_sv_undef);
+       if (MY_CXT.utimens_as_array) {
+               /* Pushing timespecs as 2-element arrays (if tv is present). */
+               AV *av;
+               if (tv) {
+                       av = newAV();
+                       av_push(av, newSViv(tv[0].tv_sec));
+                       av_push(av, newSViv(tv[0].tv_nsec));
+                       XPUSHs(sv_2mortal(newRV_noinc((SV *)av)));
+                       av = newAV();
+                       av_push(av, newSViv(tv[1].tv_sec));
+                       av_push(av, newSViv(tv[1].tv_nsec));
+                       XPUSHs(sv_2mortal(newRV_noinc((SV *)av)));
+               }
+               else {
+                       XPUSHs(&PL_sv_undef);
+                       XPUSHs(&PL_sv_undef);
+               }
+
+       }
+       else {
+               /* Pushing timespecs as floating point (double) values. */
+               XPUSHs(tv ? sv_2mortal(newSVnv(tv[0].tv_sec + (tv[0].tv_nsec / 1000000000.0))) : &PL_sv_undef);
+               XPUSHs(tv ? sv_2mortal(newSVnv(tv[1].tv_sec + (tv[1].tv_nsec / 1000000000.0))) : &PL_sv_undef);
+       }
        PUTBACK;
        rv = call_sv(MY_CXT.callback[36],G_SCALAR);
        SPAGAIN;
@@ -1389,20 +1475,23 @@ int _PLfuse_bmap(const char *file, size_t blocksize, uint64_t *idx) {
 }
 #endif /* FUSE_VERSION >= 26 */
 
-#if 0
 #if FUSE_VERSION >= 28
 int _PLfuse_ioctl(const char *file, int cmd, void *arg,
                   struct fuse_file_info *fi, unsigned int flags, void *data) {
        int rv;
+       SV *sv = NULL;
        FUSE_CONTEXT_PRE;
        DEBUGf("ioctl begin\n");
        ENTER;
        SAVETMPS;
        PUSHMARK(SP);
        XPUSHs(sv_2mortal(newSVpv(file,0)));
-       XPUSHs(sv_2mortal(newSViv(cmd)));
+       /* I don't know why cmd is a signed int in the first place;
+        * casting as unsigned so stupid tricks don't have to be done on
+        * the perl side */
+       XPUSHs(sv_2mortal(newSVuv((unsigned int)cmd)));
        XPUSHs(sv_2mortal(newSViv(flags)));
-       if (_IOC_DIR(cmd) & _IOC_READ)
+       if (_IOC_DIR(cmd) & _IOC_WRITE)
                XPUSHs(sv_2mortal(newSVpvn(data, _IOC_SIZE(cmd))));
        else
                XPUSHs(&PL_sv_undef);
@@ -1410,11 +1499,19 @@ int _PLfuse_ioctl(const char *file, int cmd, void *arg,
        PUTBACK;
        rv = call_sv(MY_CXT.callback[39],G_ARRAY);
        SPAGAIN;
-       if (_IOC_DIR(cmd) & _IOC_WRITE) {
-               if (rv == 2) {
-                       SV *sv = POPs;
-                       unsigned int len;
+       if ((_IOC_DIR(cmd) & _IOC_READ) && (rv == 2)) {
+               sv = POPs;
+               rv--;
+       }
+
+       if (rv > 0)
+               rv = POPi;
+
+       if ((_IOC_DIR(cmd) & _IOC_READ) && !rv) {
+               if (sv) {
+                       size_t len;
                        char *rdata = SvPV(sv, len);
+
                        if (len > _IOC_SIZE(cmd)) {
                                fprintf(stderr, "ioctl(): returned data was too large for data area\n");
                                rv = -EFBIG;
@@ -1423,16 +1520,12 @@ int _PLfuse_ioctl(const char *file, int cmd, void *arg,
                                memset(data, 0, _IOC_SIZE(cmd));
                                memcpy(data, rdata, len);
                        }
-
-                       rv--;
                }
                else {
-                       fprintf(stderr, "ioctl(): ioctl was a write op, but no data was returned from call?\n");
+                       fprintf(stderr, "ioctl(): ioctl was a read op, but no data was returned from call?\n");
                        rv = -EFAULT;
                }
        }
-       if (rv > 0)
-               rv = POPi;
        FREETMPS;
        LEAVE;
        PUTBACK;
@@ -1443,10 +1536,41 @@ int _PLfuse_ioctl(const char *file, int cmd, void *arg,
 
 int _PLfuse_poll(const char *file, struct fuse_file_info *fi,
                  struct fuse_pollhandle *ph, unsigned *reventsp) {
-
+       int rv;
+       SV *sv = NULL;
+       FUSE_CONTEXT_PRE;
+       DEBUGf("poll begin\n");
+       ENTER;
+       SAVETMPS;
+       PUSHMARK(SP);
+       XPUSHs(sv_2mortal(newSVpv(file,0)));
+       if (ph) {
+        /* Still gotta figure out how to do this right... */
+               sv = newSViv(PTR2IV(ph));
+        SvREADONLY_on(sv);
+               SvSHARE(sv);
+               XPUSHs(sv);
+       }
+       else
+               XPUSHs(&PL_sv_undef);
+       XPUSHs(sv_2mortal(newSViv(*reventsp)));
+       XPUSHs(FH_GETHANDLE(fi));
+       PUTBACK;
+       rv = call_sv(MY_CXT.callback[40],G_ARRAY);
+       SPAGAIN;
+       if (rv > 1) {
+               *reventsp = POPi;
+        rv--;
+    }
+       rv = (rv ? POPi : 0);
+       FREETMPS;
+       LEAVE;
+       PUTBACK;
+       DEBUGf("poll end: %i\n", rv);
+       FUSE_CONTEXT_POST;
+       return rv;
 }
 #endif /* FUSE_VERSION >= 28 */
-#endif
 
 struct fuse_operations _available_ops = {
 getattr:               _PLfuse_getattr,
@@ -1493,12 +1617,10 @@ lock:                   _PLfuse_lock,
 utimens:               _PLfuse_utimens,
 bmap:                  _PLfuse_bmap,
 #endif /* FUSE_VERSION >= 26 */
-#if 0
 #if FUSE_VERSION >= 28
 ioctl:                 _PLfuse_ioctl,
 poll:                  _PLfuse_poll,
 #endif /* FUSE_VERSION >= 28 */
-#endif
 };
 
 MODULE = Fuse          PACKAGE = Fuse
@@ -1506,14 +1628,19 @@ PROTOTYPES: DISABLE
 
 BOOT:
        MY_CXT_INIT;
+#ifdef USE_ITHREADS
        MY_CXT.self = aTHX;
+#endif
 
 void
 CLONE(...)
        PREINIT:
+#ifdef USE_ITHREADS
                int i;
                dTHX;
+#endif
        CODE:
+#ifdef USE_ITHREADS
                MY_CXT_CLONE;
                tTHX parent = MY_CXT.self;
                MY_CXT.self = my_perl;
@@ -1529,7 +1656,7 @@ CLONE(...)
                {
                        CLONE_PARAMS *clone_param;
 #if (PERL_VERSION > 13) || (PERL_VERSION == 13 && PERL_SUBVERSION >= 2)
-                       clone_param = clone_params_new(parent, aTHX);
+                       clone_param = Perl_clone_params_new(parent, aTHX);
 #else
                        CLONE_PARAMS raw_param;
                        raw_param.flags = 0;
@@ -1542,9 +1669,10 @@ CLONE(...)
                        }
                        MY_CXT.handles = (HV*)sv_dup((SV*)MY_CXT.handles, clone_param);
 #if (PERL_VERSION > 13) || (PERL_VERSION == 13 && PERL_SUBVERSION >= 2)
-                       clone_params_del(clone_param);
+                       Perl_clone_params_del(clone_param);
 #endif
                }
+#endif
 
 SV*
 fuse_get_context()
@@ -1601,7 +1729,7 @@ perl_fuse_main(...)
        struct fuse_chan *fc;
        dMY_CXT;
        INIT:
-       if(items != N_CALLBACKS + 5) {
+       if(items != N_CALLBACKS + 6) {
                fprintf(stderr,"Perl<->C inconsistency or internal error\n");
                XSRETURN_UNDEF;
        }
@@ -1627,8 +1755,9 @@ perl_fuse_main(...)
 #if FUSE_VERSION >= 28
        fops.flag_nullpath_ok = SvIV(ST(4));
 #endif /* FUSE_VERSION >= 28 */
+       MY_CXT.utimens_as_array = SvIV(ST(5));
        for(i=0;i<N_CALLBACKS;i++) {
-               SV *var = ST(i+5);
+               SV *var = ST(i+6);
                /* allow symbolic references, or real code references. */
                if(SvOK(var) && (SvPOK(var) || (SvROK(var) && SvTYPE(SvRV(var)) == SVt_PVCV))) {
                        void **tmp1 = (void**)&_available_ops, **tmp2 = (void**)&fops;
@@ -1643,7 +1772,7 @@ perl_fuse_main(...)
                } else if(SvOK(var)) {
                        croak("invalid callback (%i) passed to perl_fuse_main "
                              "(%s is not a string, code ref, or undef).\n",
-                             i+5,SvPVbyte_nolen(var));
+                             i+6,SvPVbyte_nolen(var));
                } else {
                        MY_CXT.callback[i] = NULL;
                }
@@ -1657,7 +1786,7 @@ perl_fuse_main(...)
                fuse_opt_free_args(&args);
                croak("out of memory\n");
        }
-       if (mountopts &&
+       if (mountopts && strcmp("", mountopts) &&
             (fuse_opt_add_arg(&args, "-o") == -1 ||
             fuse_opt_add_arg(&args, mountopts) == -1)) {
                fuse_opt_free_args(&args);
@@ -1678,3 +1807,35 @@ perl_fuse_main(...)
                fuse_loop(fuse_new(fc,&args,&fops,sizeof(fops),NULL));
        fuse_unmount(mountpoint,fc);
        fuse_opt_free_args(&args);
+
+#if FUSE_VERSION >= 28
+
+void
+pollhandle_destroy(...)
+    PREINIT:
+       struct fuse_pollhandle *ph;
+    INIT:
+        if (items != 1) {
+            fprintf(stderr, "No pollhandle passed?\n");
+            XSRETURN_UNDEF;
+        }
+       CODE:
+        ph = INT2PTR(struct fuse_pollhandle*, SvIV(ST(0)));
+               fuse_pollhandle_destroy(ph);
+
+int 
+notify_poll(...)
+    PREINIT:
+        struct fuse_pollhandle *ph;
+    INIT:
+        if (items != 1) {
+            fprintf(stderr, "No pollhandle passed?\n");
+            XSRETURN_UNDEF;
+        }
+       CODE:
+        ph = INT2PTR(struct fuse_pollhandle*, SvIV(ST(0)));
+               RETVAL = fuse_notify_poll(ph);
+       OUTPUT:
+               RETVAL
+
+#endif