Christian Walther be28829ae8 extmod/vfs_posix: Fix getcwd() on non-root VFS.
The unwritten API contract expected of a VFS.getcwd() by mp_vfs_getcwd()
is that its return value should be either "" or "/" when the CWD is at
the root of the VFS and otherwise start with a slash and not end with a
slash. This was not correctly implemented in VfsPosix for instances with
a non-empty root - the required leading slash, if any, was cut off
because the root length includes a trailing slash. This would result in
missing slashes in the middle of the return value of os.getcwd() or in
uninitialized garbage from beyond a string's null terminator when the
CWD was at the VFS root.

Signed-off-by: Christian Walther <cwalther@gmx.ch>
2023-10-19 16:21:09 +02:00
..
2017-07-18 11:57:39 +10:00
2019-10-29 14:17:29 +11:00
2017-07-18 11:57:39 +10:00