diff options
Diffstat (limited to 'python/_fusemodule.c')
-rw-r--r-- | python/_fusemodule.c | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/python/_fusemodule.c b/python/_fusemodule.c new file mode 100644 index 0000000..eee4fda --- /dev/null +++ b/python/_fusemodule.c @@ -0,0 +1,266 @@ +#include "Python.h" +#include "fuse.h" +#include <time.h> + +static PyObject *ErrorObject; + +PyObject *getattr_cb=NULL, *readlink_cb=NULL, *getdir_cb=NULL, + *mknod_cb=NULL, *mkdir_cb=NULL, *unlink_cb=NULL, *rmdir_cb=NULL, + *symlink_cb=NULL, *rename_cb=NULL, *link_cb=NULL, *chmod_cb=NULL, + *chown_cb=NULL, *truncate_cb=NULL, *utime_cb=NULL, + *open_cb=NULL, *read_cb=NULL, *write_cb=NULL; +struct fuse *fuse=NULL; + + +#define PROLOGUE \ + int ret = -EINVAL; \ + if (!v) { PyErr_Print(); goto OUT; } \ + if(v == Py_None) { ret = 0; goto OUT_DECREF; } \ + if(PyInt_Check(v)) { ret = PyInt_AsLong(v); goto OUT_DECREF; } + +#define EPILOGUE \ + OUT_DECREF: \ + Py_DECREF(v); \ + OUT: \ + return ret; +static int getattr_func(const char *path, struct stat *st) { + int i; + PyObject *v = PyObject_CallFunction(getattr_cb, "s", path); + PROLOGUE + + if(!PyTuple_Check(v)) { goto OUT_DECREF; } + if(PyTuple_Size(v) < 10) { goto OUT_DECREF; } + for(i=0; i<10; i++) { + if (!PyInt_Check(PyTuple_GetItem(v, 0))) goto OUT_DECREF; + } + + st->st_mode = PyInt_AsLong(PyTuple_GetItem(v, 0)); + st->st_ino = PyInt_AsLong(PyTuple_GetItem(v, 1)); + st->st_dev = PyInt_AsLong(PyTuple_GetItem(v, 2)); + st->st_nlink= PyInt_AsLong(PyTuple_GetItem(v, 3)); + st->st_uid = PyInt_AsLong(PyTuple_GetItem(v, 4)); + st->st_gid = PyInt_AsLong(PyTuple_GetItem(v, 5)); + st->st_size = PyInt_AsLong(PyTuple_GetItem(v, 6)); + st->st_atime= PyInt_AsLong(PyTuple_GetItem(v, 7)); + st->st_mtime= PyInt_AsLong(PyTuple_GetItem(v, 8)); + st->st_ctime= PyInt_AsLong(PyTuple_GetItem(v, 9)); + + /* Fill in fields not provided by Python lstat() */ + st->st_blksize= 4096; + st->st_blocks= (st->st_size + 511)/512; + st->st_ino = 0; + + ret = 0; + EPILOGUE +} + +static int readlink_func(const char *path, char *link, size_t size) { + PyObject *v = PyObject_CallFunction(readlink_cb, "s", path); + char *s; + PROLOGUE + + if(!PyString_Check(v)) { ret = -EINVAL; goto OUT_DECREF; } + s = PyString_AsString(v); + strncpy(link, s, size); + link[size-1] = '\0'; + ret = 0; + + EPILOGUE +} + +static int getdir_func(const char *path, fuse_dirh_t dh, fuse_dirfil_t df) { + PyObject *v = PyObject_CallFunction(getdir_cb, "s", path); + int i; + PROLOGUE + + if(!PySequence_Check(v)) { printf("getdir_func not sequence\n");goto OUT_DECREF; } + for(i=0; i < PySequence_Length(v); i++) { + PyObject *w = PySequence_GetItem(v, i); + printf("getdir_func validate %d\n", i); + if(!PySequence_Check(w)) { printf("getdir item not sequence\n"); goto OUT_DECREF; } + if(PySequence_Length(w) != 2) { printf("getdir item not len 2\n"); goto OUT_DECREF; } + if(!PyString_Check(PySequence_GetItem(w,0))){ printf("getdir item[0] not string"); goto OUT_DECREF; } + if(!PyInt_Check(PySequence_GetItem(w, 1))) { printf("getdir item[1] not int"); goto OUT_DECREF; } + } + + for(i=0; i < PySequence_Length(v); i++) { + PyObject *w = PySequence_GetItem(v, i); + printf("getdir_func %d\n", i); + ret = df(dh, PyString_AsString(PySequence_GetItem(w, 0)), + PyInt_AsLong(PySequence_GetItem(w, 1))); + if(ret) goto OUT_DECREF; + } + + ret = 0; + + EPILOGUE +} + +int mknod_func(const char *path, mode_t m, dev_t d) { + PyObject *v = PyObject_CallFunction(mknod_cb, "sii", path, m, d); + PROLOGUE + EPILOGUE +} + +int mkdir_func(const char *path, mode_t m) { + PyObject *v = PyObject_CallFunction(mkdir_cb, "si", path, m); + PROLOGUE + EPILOGUE +} + +int unlink_func(const char *path) { + PyObject *v = PyObject_CallFunction(unlink_cb, "s", path); + PROLOGUE + EPILOGUE +} + +int rmdir_func(const char *path) { + PyObject *v = PyObject_CallFunction(rmdir_cb, "s", path); + PROLOGUE + EPILOGUE +} + +int symlink_func(const char *path, const char *path1) { + PyObject *v = PyObject_CallFunction(symlink_cb, "ss", path, path1); + PROLOGUE + EPILOGUE +} + +int rename_func(const char *path, const char *path1) { + PyObject *v = PyObject_CallFunction(rename_cb, "ss", path, path1); + PROLOGUE + EPILOGUE +} + +int link_func(const char *path, const char *path1) { + PyObject *v = PyObject_CallFunction(link_cb, "ss", path, path1); + PROLOGUE + EPILOGUE +} + +int chmod_func(const char *path, mode_t m) { + PyObject *v = PyObject_CallFunction(chmod_cb, "si", path, m); + PROLOGUE + EPILOGUE +} + +int chown_func(const char *path, uid_t u, gid_t g) { + PyObject *v = PyObject_CallFunction(chown_cb, "sii", path, u, g); + PROLOGUE + EPILOGUE +} + +int truncate_func(const char *path, off_t o) { + PyObject *v = PyObject_CallFunction(truncate_cb, "si", path, o); + PROLOGUE + EPILOGUE +} + +int utime_func(const char *path, struct utimbuf *u) { + int actime = u ? u->actime : time(NULL); + int modtime = u ? u->modtime : actime; + PyObject *v = PyObject_CallFunction(utime_cb, "s(ii)", + path, actime, modtime); + PROLOGUE + EPILOGUE +} + +int read_func(const char *path, char *buf, size_t s, off_t off) { + PyObject *v = PyObject_CallFunction(read_cb, "sii", path, s, off); + PROLOGUE + if(PyString_Check(v)) { + if(PyString_Size(v) > s) goto OUT_DECREF; + memcpy(buf, PyString_AsString(v), PyString_Size(v)); + ret = PyString_Size(v); + } + EPILOGUE +} + +int write_func(const char *path, const char *buf, size_t t, off_t off) { + PyObject *v = PyObject_CallFunction(write_cb,"ss#i", path, buf, t, off); + PROLOGUE + EPILOGUE +} + +int open_func(const char *path, int mode) { + PyObject *v = PyObject_CallFunction(open_cb, "si", path, mode); + PROLOGUE + EPILOGUE +} + +static PyObject * +Fuse_main(PyObject *self, PyObject *args, PyObject *kw) +{ + PyObject *list, *item; + + int flags=0; + + struct fuse_operations op; + + static char *kwlist[] = { + "getattr", "readlink", "getdir", "mknod", + "mkdir", "unlink", "rmdir", "symlink", "rename", + "link", "chmod", "chown", "truncate", "utime", + "open", "read", "write", "flags", NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kw, "|OOOOOOOOOOOOOOOOOi", + kwlist, &getattr_cb, &readlink_cb, &getdir_cb, &mknod_cb, + &mkdir_cb, &unlink_cb, &rmdir_cb, &symlink_cb, &rename_cb, + &link_cb, &chmod_cb, &chown_cb, &truncate_cb, &utime_cb, + &open_cb, &read_cb, &write_cb, &flags)) + return NULL; + +#define DO_ONE_ATTR(name) if(name ## _cb) { Py_INCREF(name ## _cb); op.name = name ## _func; } else { op.name = NULL; } + + DO_ONE_ATTR(getattr); + DO_ONE_ATTR(readlink); + DO_ONE_ATTR(getdir); + DO_ONE_ATTR(mknod); + DO_ONE_ATTR(mkdir); + DO_ONE_ATTR(unlink); + DO_ONE_ATTR(rmdir); + DO_ONE_ATTR(symlink); + DO_ONE_ATTR(rename); + DO_ONE_ATTR(link); + DO_ONE_ATTR(chmod); + DO_ONE_ATTR(chown); + DO_ONE_ATTR(truncate); + DO_ONE_ATTR(utime); + DO_ONE_ATTR(open); + DO_ONE_ATTR(read); + DO_ONE_ATTR(write); + + fuse = fuse_new(0, flags); + fuse_set_operations(fuse, &op); + fuse_loop(fuse); + + Py_INCREF(Py_None); + return Py_None; +} + +/* List of functions defined in the module */ + +static PyMethodDef Fuse_methods[] = { + {"main", (PyCFunction)Fuse_main, METH_VARARGS|METH_KEYWORDS}, + {NULL, NULL} /* sentinel */ +}; + + +/* Initialization function for the module (*must* be called init_fuse) */ + +DL_EXPORT(void) +init_fuse(void) +{ + PyObject *m, *d; + + /* Create the module and add the functions */ + m = Py_InitModule("_fuse", Fuse_methods); + + /* Add some symbolic constants to the module */ + d = PyModule_GetDict(m); + ErrorObject = PyErr_NewException("fuse.error", NULL, NULL); + PyDict_SetItemString(d, "error", ErrorObject); + PyDict_SetItemString(d, "MULTITHREAD", PyInt_FromLong(FUSE_MULTITHREAD)); + PyDict_SetItemString(d, "DEBUG", PyInt_FromLong(FUSE_DEBUG)); + +} |