blob_fs/src/errors.rs

// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#[derive(Debug, PartialEq)]
pub enum BFSErr {
    DeviceErr,    // The underlying block device had an error.
    NotFound,     // The resource was not found.
    CleanRead,    // Tried to read a byte that had never been written.
    DirtyWrite,   // Tried to write a byte that had already been written.
    OutOfBounds,  // Tried to read off the end of the device.
    BadOverwrite, // Tried to change a bit from 0->1 without an erase.
    BadErase,     // Tried to erase a clean block
    Corrupt,      // Something was corrupt...
    Full,         // No free blocks left.
    Duplicate,    // Tried to add a blob that already existed.
    InvalidArg,   // Bad argument passed to API
}