path_cleanup(&path);
return PyLong_FromUnsignedLongLong(id);
}
+
+PyObject *subvolume_path(PyObject *self, PyObject *args, PyObject *kwds)
+{
+ static char *keywords[] = {"path", "id", NULL};
+ struct path_arg path = {.allow_fd = true};
+ enum btrfs_util_error err;
+ uint64_t id = 0;
+ char *subvol_path;
+ PyObject *ret;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&|K:subvolume_path",
+ keywords, &path_converter, &path, &id))
+ return NULL;
+
+ if (path.path)
+ err = btrfs_util_subvolume_path(path.path, id, &subvol_path);
+ else
+ err = btrfs_util_subvolume_path_fd(path.fd, id, &subvol_path);
+ if (err) {
+ SetFromBtrfsUtilErrorWithPath(err, &path);
+ path_cleanup(&path);
+ return NULL;
+ }
+
+ path_cleanup(&path);
+
+ ret = PyUnicode_DecodeFSDefault(subvol_path);
+ free(subvol_path);
+ return ret;
+}
+
+static PyObject *subvolume_info_to_object(const struct btrfs_util_subvolume_info *subvol)
+{
+ PyObject *ret, *tmp;
+
+ ret = PyStructSequence_New(&SubvolumeInfo_type);
+ if (ret == NULL)
+ return NULL;
+
+#define SET_UINT64(i, field) \
+ tmp = PyLong_FromUnsignedLongLong(subvol->field); \
+ if (tmp == NULL) { \
+ Py_DECREF(ret); \
+ return ret; \
+ } \
+ PyStructSequence_SET_ITEM(ret, i, tmp);
+
+#define SET_UUID(i, field) \
+ tmp = PyBytes_FromStringAndSize((char *)subvol->field, 16); \
+ if (tmp == NULL) { \
+ Py_DECREF(ret); \
+ return ret; \
+ } \
+ PyStructSequence_SET_ITEM(ret, i, tmp);
+
+#define SET_TIME(i, field) \
+ tmp = PyFloat_FromDouble(subvol->field.tv_sec + \
+ subvol->field.tv_nsec / 1000000000); \
+ if (tmp == NULL) { \
+ Py_DECREF(ret); \
+ return ret; \
+ } \
+ PyStructSequence_SET_ITEM(ret, i, tmp);
+
+ SET_UINT64(0, id);
+ SET_UINT64(1, parent_id);
+ SET_UINT64(2, dir_id);
+ SET_UINT64(3, flags);
+ SET_UUID(4, uuid);
+ SET_UUID(5, parent_uuid);
+ SET_UUID(6, received_uuid);
+ SET_UINT64(7, generation);
+ SET_UINT64(8, ctransid);
+ SET_UINT64(9, otransid);
+ SET_UINT64(10, stransid);
+ SET_UINT64(11, rtransid);
+ SET_TIME(12, ctime);
+ SET_TIME(13, otime);
+ SET_TIME(14, stime);
+ SET_TIME(15, rtime);
+
+#undef SET_TIME
+#undef SET_UUID
+#undef SET_UINT64
+
+ return ret;
+}
+
+PyObject *subvolume_info(PyObject *self, PyObject *args, PyObject *kwds)
+{
+ static char *keywords[] = {"path", "id", NULL};
+ struct path_arg path = {.allow_fd = true};
+ struct btrfs_util_subvolume_info subvol;
+ enum btrfs_util_error err;
+ uint64_t id = 0;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&|K:subvolume_info",
+ keywords, &path_converter, &path, &id))
+ return NULL;
+
+ if (path.path)
+ err = btrfs_util_subvolume_info(path.path, id, &subvol);
+ else
+ err = btrfs_util_subvolume_info_fd(path.fd, id, &subvol);
+ if (err) {
+ SetFromBtrfsUtilErrorWithPath(err, &path);
+ path_cleanup(&path);
+ return NULL;
+ }
+
+ path_cleanup(&path);
+
+ return subvolume_info_to_object(&subvol);
+}
+
+static PyStructSequence_Field SubvolumeInfo_fields[] = {
+ {"id", "int ID of this subvolume"},
+ {"parent_id", "int ID of the subvolume containing this subvolume"},
+ {"dir_id", "int inode number of the directory containing this subvolume"},
+ {"flags", "int root item flags"},
+ {"uuid", "bytes UUID of this subvolume"},
+ {"parent_uuid", "bytes UUID of the subvolume this is a snapshot of"},
+ {"received_uuid", "bytes UUID of the subvolume this was received from"},
+ {"generation", "int transaction ID of the subvolume root"},
+ {"ctransid", "int transaction ID when an inode was last changed"},
+ {"otransid", "int transaction ID when this subvolume was created"},
+ {"stransid", "int transaction ID of the sent subvolume this subvolume was received from"},
+ {"rtransid", "int transaction ID when this subvolume was received"},
+ {"ctime", "float time when an inode was last changed"},
+ {"otime", "float time when this subvolume was created"},
+ {"stime", "float time, usually zero"},
+ {"rtime", "float time when this subvolume was received"},
+ {},
+};
+
+PyStructSequence_Desc SubvolumeInfo_desc = {
+ "btrfsutil.SubvolumeInfo",
+ "Information about a Btrfs subvolume.",
+ SubvolumeInfo_fields,
+ 14,
+};
+
+PyTypeObject SubvolumeInfo_type;
+
+PyObject *get_subvolume_read_only(PyObject *self, PyObject *args, PyObject *kwds)
+{
+ static char *keywords[] = {"path", NULL};
+ struct path_arg path = {.allow_fd = true};
+ enum btrfs_util_error err;
+ bool read_only;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds,
+ "O&:get_subvolume_read_only",
+ keywords, &path_converter, &path))
+ return NULL;
+
+ if (path.path) {
+ err = btrfs_util_get_subvolume_read_only(path.path, &read_only);
+ } else {
+ err = btrfs_util_get_subvolume_read_only_fd(path.fd,
+ &read_only);
+ }
+ if (err) {
+ SetFromBtrfsUtilErrorWithPath(err, &path);
+ path_cleanup(&path);
+ return NULL;
+ }
+
+ path_cleanup(&path);
+ return PyBool_FromLong(read_only);
+}
+
+PyObject *set_subvolume_read_only(PyObject *self, PyObject *args, PyObject *kwds)
+{
+ static char *keywords[] = {"path", "read_only", NULL};
+ struct path_arg path = {.allow_fd = true};
+ enum btrfs_util_error err;
+ int read_only = 1;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds,
+ "O&|p:set_subvolume_read_only",
+ keywords, &path_converter, &path,
+ &read_only))
+ return NULL;
+
+ if (path.path)
+ err = btrfs_util_set_subvolume_read_only(path.path, read_only);
+ else
+ err = btrfs_util_set_subvolume_read_only_fd(path.fd, read_only);
+ if (err) {
+ SetFromBtrfsUtilErrorWithPath(err, &path);
+ path_cleanup(&path);
+ return NULL;
+ }
+
+ path_cleanup(&path);
+ Py_RETURN_NONE;
+}
+
+PyObject *get_default_subvolume(PyObject *self, PyObject *args, PyObject *kwds)
+{
+ static char *keywords[] = {"path", NULL};
+ struct path_arg path = {.allow_fd = true};
+ enum btrfs_util_error err;
+ uint64_t id;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&:get_default_subvolume",
+ keywords, &path_converter, &path))
+ return NULL;
+
+ if (path.path)
+ err = btrfs_util_get_default_subvolume(path.path, &id);
+ else
+ err = btrfs_util_get_default_subvolume_fd(path.fd, &id);
+ if (err) {
+ SetFromBtrfsUtilErrorWithPath(err, &path);
+ path_cleanup(&path);
+ return NULL;
+ }
+
+ path_cleanup(&path);
+ return PyLong_FromUnsignedLongLong(id);
+}
+
+PyObject *set_default_subvolume(PyObject *self, PyObject *args, PyObject *kwds)
+{
+ static char *keywords[] = {"path", "id", NULL};
+ struct path_arg path = {.allow_fd = true};
+ enum btrfs_util_error err;
+ uint64_t id = 0;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&|K:set_default_subvolume",
+ keywords, &path_converter, &path, &id))
+ return NULL;
+
+ if (path.path)
+ err = btrfs_util_set_default_subvolume(path.path, id);
+ else
+ err = btrfs_util_set_default_subvolume_fd(path.fd, id);
+ if (err) {
+ SetFromBtrfsUtilErrorWithPath(err, &path);
+ path_cleanup(&path);
+ return NULL;
+ }
+
+ path_cleanup(&path);
+ Py_RETURN_NONE;
+}
+
+PyObject *create_subvolume(PyObject *self, PyObject *args, PyObject *kwds)
+{
+ static char *keywords[] = {"path", "async", "qgroup_inherit", NULL};
+ struct path_arg path = {.allow_fd = false};
+ enum btrfs_util_error err;
+ int async = 0;
+ QgroupInherit *inherit = NULL;
+ uint64_t transid;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&|pO!:create_subvolume",
+ keywords, &path_converter, &path,
+ &async, &QgroupInherit_type, &inherit))
+ return NULL;
+
+ err = btrfs_util_create_subvolume(path.path, 0, async ? &transid : NULL,
+ inherit ? inherit->inherit : NULL);
+ if (err) {
+ SetFromBtrfsUtilErrorWithPath(err, &path);
+ path_cleanup(&path);
+ return NULL;
+ }
+
+ path_cleanup(&path);
+ if (async)
+ return PyLong_FromUnsignedLongLong(transid);
+ else
+ Py_RETURN_NONE;
+}
+
+typedef struct {
+ PyObject_HEAD
+ struct btrfs_util_subvolume_iterator *iter;
+ bool info;
+} SubvolumeIterator;
+
+static void SubvolumeIterator_dealloc(SubvolumeIterator *self)
+{
+ btrfs_util_destroy_subvolume_iterator(self->iter);
+ Py_TYPE(self)->tp_free((PyObject *)self);
+}
+
+static PyObject *SubvolumeIterator_next(SubvolumeIterator *self)
+{
+ enum btrfs_util_error err;
+ PyObject *ret, *tmp;
+ char *path;
+
+ if (!self->iter) {
+ PyErr_SetString(PyExc_ValueError,
+ "operation on closed iterator");
+ return NULL;
+ }
+
+ if (self->info) {
+ struct btrfs_util_subvolume_info subvol;
+
+ err = btrfs_util_subvolume_iterator_next_info(self->iter, &path,
+ &subvol);
+ if (err == BTRFS_UTIL_ERROR_STOP_ITERATION) {
+ PyErr_SetNone(PyExc_StopIteration);
+ return NULL;
+ } else if (err) {
+ SetFromBtrfsUtilError(err);
+ return NULL;
+ }
+
+ tmp = subvolume_info_to_object(&subvol);
+ } else {
+ uint64_t id;
+
+ err = btrfs_util_subvolume_iterator_next(self->iter, &path, &id);
+ if (err == BTRFS_UTIL_ERROR_STOP_ITERATION) {
+ PyErr_SetNone(PyExc_StopIteration);
+ return NULL;
+ } else if (err) {
+ SetFromBtrfsUtilError(err);
+ return NULL;
+ }
+
+ tmp = PyLong_FromUnsignedLongLong(id);
+
+ }
+ if (tmp) {
+ ret = Py_BuildValue("O&O", PyUnicode_DecodeFSDefault, path,
+ tmp);
+ Py_DECREF(tmp);
+ free(path);
+ } else {
+ ret = NULL;
+ }
+ return ret;
+}
+
+static int SubvolumeIterator_init(SubvolumeIterator *self, PyObject *args,
+ PyObject *kwds)
+{
+ static char *keywords[] = {"path", "top", "info", "post_order", NULL};
+ struct path_arg path = {.allow_fd = true};
+ enum btrfs_util_error err;
+ unsigned long long top = 5;
+ int info = 0;
+ int post_order = 0;
+ int flags = 0;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&|Kpp:SubvolumeIterator",
+ keywords, &path_converter, &path, &top,
+ &info, &post_order))
+ return -1;
+
+ if (post_order)
+ flags |= BTRFS_UTIL_SUBVOLUME_ITERATOR_POST_ORDER;
+
+ if (path.path) {
+ err = btrfs_util_create_subvolume_iterator(path.path, top,
+ flags, &self->iter);
+ } else {
+ err = btrfs_util_create_subvolume_iterator_fd(path.fd, top,
+ flags,
+ &self->iter);
+ }
+ if (err) {
+ SetFromBtrfsUtilErrorWithPath(err, &path);
+ path_cleanup(&path);
+ return -1;
+ }
+
+ self->info = info;
+
+ return 0;
+}
+
+static PyObject *SubvolumeIterator_close(SubvolumeIterator *self)
+{
+ if (self->iter) {
+ btrfs_util_destroy_subvolume_iterator(self->iter);
+ self->iter = NULL;
+ }
+ Py_RETURN_NONE;
+}
+
+static PyObject *SubvolumeIterator_fileno(SubvolumeIterator *self)
+{
+ if (!self->iter) {
+ PyErr_SetString(PyExc_ValueError,
+ "operation on closed iterator");
+ return NULL;
+ }
+ return PyLong_FromLong(btrfs_util_subvolume_iterator_fd(self->iter));
+}
+
+static PyObject *SubvolumeIterator_enter(SubvolumeIterator *self)
+{
+ Py_INCREF((PyObject *)self);
+ return (PyObject *)self;
+}
+
+static PyObject *SubvolumeIterator_exit(SubvolumeIterator *self, PyObject *args,
+ PyObject *kwds)
+{
+ static char *keywords[] = {"exc_type", "exc_value", "traceback", NULL};
+ PyObject *exc_type, *exc_value, *traceback;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds, "OOO:__exit__", keywords,
+ &exc_type, &exc_value, &traceback))
+ return NULL;
+
+ return SubvolumeIterator_close(self);
+}
+
+#define SubvolumeIterator_DOC \
+ "SubvolumeIterator(path, top=0, info=False, post_order=False) -> new subvolume iterator\n\n" \
+ "Create a new iterator that produces tuples of (path, ID) representing\n" \
+ "subvolumes on a filesystem.\n\n" \
+ "Arguments:\n" \
+ "path -- string, bytes, path-like object, or open file descriptor in\n" \
+ "filesystem to list\n" \
+ "top -- if not zero, instead of only listing subvolumes beneath the\n" \
+ "given path, list subvolumes beneath the subvolume with this ID; passing\n" \
+ "BTRFS_FS_TREE_OBJECTID (5) here lists all subvolumes. The subvolumes\n" \
+ "are listed relative to the subvolume with this ID.\n" \
+ "info -- bool indicating the iterator should yield SubvolumeInfo instead of\n" \
+ "the subvolume ID\n" \
+ "post_order -- bool indicating whether to yield parent subvolumes before\n" \
+ "child subvolumes (e.g., 'foo/bar' before 'foo')"
+
+static PyMethodDef SubvolumeIterator_methods[] = {
+ {"close", (PyCFunction)SubvolumeIterator_close,
+ METH_NOARGS,
+ "close()\n\n"
+ "Close this iterator."},
+ {"fileno", (PyCFunction)SubvolumeIterator_fileno,
+ METH_NOARGS,
+ "fileno() -> int\n\n"
+ "Get the file descriptor associated with this iterator."},
+ {"__enter__", (PyCFunction)SubvolumeIterator_enter,
+ METH_NOARGS, ""},
+ {"__exit__", (PyCFunction)SubvolumeIterator_exit,
+ METH_VARARGS | METH_KEYWORDS, ""},
+ {},
+};
+
+PyTypeObject SubvolumeIterator_type = {
+ PyVarObject_HEAD_INIT(NULL, 0)
+ "btrfsutil.SubvolumeIterator", /* tp_name */
+ sizeof(SubvolumeIterator), /* tp_basicsize */
+ 0, /* tp_itemsize */
+ (destructor)SubvolumeIterator_dealloc, /* tp_dealloc */
+ NULL, /* tp_print */
+ NULL, /* tp_getattr */
+ NULL, /* tp_setattr */
+ NULL, /* tp_as_async */
+ NULL, /* tp_repr */
+ NULL, /* tp_as_number */
+ NULL, /* tp_as_sequence */
+ NULL, /* tp_as_mapping */
+ NULL, /* tp_hash */
+ NULL, /* tp_call */
+ NULL, /* tp_str */
+ NULL, /* tp_getattro */
+ NULL, /* tp_setattro */
+ NULL, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT, /* tp_flags */
+ SubvolumeIterator_DOC, /* tp_doc */
+ NULL, /* tp_traverse */
+ NULL, /* tp_clear */
+ NULL, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ PyObject_SelfIter, /* tp_iter */
+ (iternextfunc)SubvolumeIterator_next, /* tp_iternext */
+ SubvolumeIterator_methods, /* tp_methods */
+ NULL, /* tp_members */
+ NULL, /* tp_getset */
+ NULL, /* tp_base */
+ NULL, /* tp_dict */
+ NULL, /* tp_descr_get */
+ NULL, /* tp_descr_set */
+ 0, /* tp_dictoffset */
+ (initproc)SubvolumeIterator_init, /* tp_init */
+};
projects / platform / upstream / btrfs-progs.git / blobdiff