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[mpy/file] Fixed concurency issues

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This commit is contained in:
M4x1m3
2020-07-21 21:28:49 +02:00
parent 8eeae5f161
commit f65881420c
1 changed files with 11 additions and 0 deletions
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11
python/port/mod/ion/file.cpp
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@@ -527,6 +527,17 @@ STATIC mp_obj_t file_make_new(const mp_obj_type_t *type, size_t n_args, size_t n
void check_closed(file_obj_t* file) {
if (file->closed)
mp_raise_ValueError("I/O operation on closed file");
// This is VERY imports, as it eliminates concurrency
// issues (eg. removing the file and then writing to it,
// having file move in the store, etc.)
size_t l;
const char* file_name = mp_obj_str_get_data(file->name, &l);
file->record = Ion::Storage::sharedStorage()->recordNamed(file_name);
if (file->record == Ion::Storage::Record()) {
mp_raise_OSError(2);
}
}