suspect-devices/circuitpython/extmod/vfs.c, branch encoding

Add license to some obvious files.

2020-07-06T18:16:25+00:00

protocols: Allow them to be (optionally) type-safe

2019-12-04T15:29:57+00:00

Protocols are nice, but there is no way for C code to verify whether a type's "protocol" structure actually implements some particular protocol. As a result, you can pass an object that implements the "vfs" protocol to one that expects the "stream" protocol, and the opposite of awesomeness ensues. This patch adds an OPTIONAL (but enabled by default) protocol identifier as the first member of any protocol structure. This identifier is simply a unique QSTR chosen by the protocol designer and used by each protocol implementer. When checking for protocol support, instead of just checking whether the object's type has a non-NULL protocol field, use `mp_proto_get` which implements the protocol check when possible. The existing protocols are now named: protocol_framebuf protocol_i2c protocol_pin protocol_stream protocol_spi protocol_vfs (most of these are unused in CP and are just inherited from MP; vfs and stream are definitely used though) I did not find any crashing examples, but here's one to give a flavor of what is improved, using `micropython_coverage`. Before the change, the vfs "ioctl" protocol is invoked, and the result is not intelligible as json (but it could have resulted in a hard fault, potentially): >>> import uos, ujson >>> u = uos.VfsPosix('/tmp') >>> ujson.load(u) Traceback (most recent call last): File "", line 1, in ValueError: syntax error in JSON After the change, the vfs object is correctly detected as not supporting the stream protocol: >>> ujson.load(p) Traceback (most recent call last): File "", line 1, in OSError: stream operation not supported

py changes for supporting superclass constructors that take kwargs

2019-01-15T01:29:19+00:00

WIP: after merge; before testing

2018-07-11T20:45:30+00:00

extmod/vfs: Introduce a C-level VFS protocol, with fast import_stat.

2018-06-06T04:33:42+00:00

Following other C-level protocols, this VFS protocol is added to help abstract away implementation details of the underlying VFS in an efficient way. As a starting point, the import_stat function is put into this protocol so that the VFS sub-system does not need to know about every VFS implementation in order to do an efficient stat for importing files. In the future it might be worth adding other functions to this protocol.

extmod/vfs: Add fast path for stating VfsPosix filesystem.

2018-06-06T04:28:23+00:00

extmod/vfs: Use u_rom_obj properly in argument structures.

2018-06-06T04:28:23+00:00

extmod/vfs: Delegate import_stat to vfs.stat to allow generic FS import.

2018-05-02T07:08:48+00:00

extmod/vfs_fat: Add file size as 4th element of uos.ilistdir tuple.

2018-03-12T01:26:36+00:00

extmod/vfs: Use existing qstr for forward-slash string object.

2017-11-16T02:13:24+00:00