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extmod/vfs: Allow to stat the root directory.

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os.stat('/') now works and returns a mostly-empty tuple.  Really all that
is useful is the mode which tells that it's a directory.
This commit is contained in:
Damien George 2017-02-13 12:25:43 +11:00
parent 2f76c3ca0a
commit 3625afa173
1 changed files with 8 additions and 0 deletions
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8
extmod/vfs.c
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@ -311,6 +311,14 @@ MP_DEFINE_CONST_FUN_OBJ_1(mp_vfs_rmdir_obj, mp_vfs_rmdir);
mp_obj_t mp_vfs_stat(mp_obj_t path_in) { mp_obj_t mp_vfs_stat(mp_obj_t path_in) {
mp_obj_t path_out; mp_obj_t path_out;
mp_vfs_mount_t *vfs = lookup_path(path_in, &path_out); mp_vfs_mount_t *vfs = lookup_path(path_in, &path_out);
if (vfs == MP_VFS_ROOT) {
mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(10, NULL));
t->items[0] = MP_OBJ_NEW_SMALL_INT(0x4000); // st_mode = stat.S_IFDIR
for (int i = 1; i <= 9; ++i) {
t->items[i] = MP_OBJ_NEW_SMALL_INT(0); // dev, nlink, uid, gid, size, atime, mtime, ctime
}
return MP_OBJ_FROM_PTR(t);
}
return mp_vfs_proxy_call(vfs, MP_QSTR_stat, 1, &path_out); return mp_vfs_proxy_call(vfs, MP_QSTR_stat, 1, &path_out);
} }
MP_DEFINE_CONST_FUN_OBJ_1(mp_vfs_stat_obj, mp_vfs_stat); MP_DEFINE_CONST_FUN_OBJ_1(mp_vfs_stat_obj, mp_vfs_stat);