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allow '/' to be mounted on '/' from Python code

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This commit is contained in:
Dan Halbert 2018-06-21 09:24:40 -04:00
parent de4cd1ee73
commit dbf1a2f7d5
2 changed files with 11 additions and 8 deletions
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4
extmod/vfs_fat_diskio.c
View File

@ -135,7 +135,7 @@ DRESULT disk_read (
if (nlr_push(&nlr) == 0) {
mp_obj_t ret = mp_call_method_n_kw(2, 0, vfs->readblocks);
nlr_pop();
if (mp_obj_get_int(ret) != 0) {
if (ret != mp_const_none && MP_OBJ_SMALL_INT_VALUE(ret) != 0) {
return RES_ERROR;
}
} else {
@ -180,7 +180,7 @@ DRESULT disk_write (
if (nlr_push(&nlr) == 0) {
mp_obj_t ret = mp_call_method_n_kw(2, 0, vfs->writeblocks);
nlr_pop();
if (mp_obj_get_int(ret) != 0) {
if (ret != mp_const_none && MP_OBJ_SMALL_INT_VALUE(ret) != 0) {
return RES_ERROR;
}
} else {

15
shared-module/storage/__init__.c
View File

@ -65,12 +65,15 @@ void common_hal_storage_mount(mp_obj_t vfs_obj, const char* mount_path, bool rea
args[1] = mp_const_false; // Don't make the file system automatically when mounting.
// Check that there's no file or directory with the same name as the mount point.
nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) {
common_hal_os_stat(mount_path);
nlr_pop();
// Something with the same name exists.
mp_raise_OSError(MP_EEXIST);
// But it's ok to mount '/' in any case.
if (strcmp(vfs->str, "/") != 0) {
nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) {
common_hal_os_stat(mount_path);
nlr_pop();
// Something with the same name exists.
mp_raise_OSError(MP_EEXIST);
}
}
// check that the destination mount point is unused