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extmod/vfs: Retain previous working directory if chdir fails.

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Fixes issue #6069.
This commit is contained in:
Damien George
2020-05-28 12:50:44 +10:00
parent 8f642677f7
commit 22806ed5df
3 changed files with 27 additions and 2 deletions
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3
extmod/vfs.c
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@@ -322,7 +322,6 @@ MP_DEFINE_CONST_FUN_OBJ_KW(mp_vfs_open_obj, 0, mp_vfs_open);
mp_obj_t mp_vfs_chdir(mp_obj_t path_in) {
mp_obj_t path_out;
mp_vfs_mount_t *vfs = lookup_path(path_in, &path_out);
MP_STATE_VM(vfs_cur) = vfs;
if (vfs == MP_VFS_ROOT) {
// If we change to the root dir and a VFS is mounted at the root then
// we must change that VFS's current dir to the root dir so that any
@@ -334,9 +333,11 @@ mp_obj_t mp_vfs_chdir(mp_obj_t path_in) {
break;
}
}
vfs = MP_VFS_ROOT;
} else {
mp_vfs_proxy_call(vfs, MP_QSTR_chdir, 1, &path_out);
}
MP_STATE_VM(vfs_cur) = vfs;
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_vfs_chdir_obj, mp_vfs_chdir);