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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
use std::{
error::Error,
ffi::NulError,
fmt::{self, Display},
io,
str::Utf8Error,
};
#[derive(Debug)]
/// Error returned from any libcryptsetup-rs function
pub enum LibcryptErr {
/// Wrapper for `io::Error`
IOError(io::Error),
/// Wrapper for `uuid::parser::ParseError`
UuidError(uuid::Error),
/// Wrapper for `ffi::NulError`
NullError(NulError),
/// Wrapper for `str::Utf8Error`
Utf8Error(Utf8Error),
/// Wrapper for `serde_json::Error`
JsonError(serde_json::Error),
/// Indicates that a Rust/C conversion was unsuccessful
InvalidConversion,
/// Indicates that a pointer returned was null signifying an error
NullPtr,
/// Indicates that a `&'static str` was not created with `c_str!()` macro
NoNull(&'static str),
/// Custom message
Other(String),
}
impl Display for LibcryptErr {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match *self {
LibcryptErr::IOError(ref e) => write!(f, "IO error occurred: {}", e),
LibcryptErr::UuidError(ref e) => write!(f, "Failed to parse UUID from C string: {}", e),
LibcryptErr::NullError(ref e) => write!(
f,
"Null error occurred when handling &str conversion: {}",
e
),
LibcryptErr::Utf8Error(ref e) => write!(
f,
"UTF8 error occurred when handling &str conversion: {}",
e
),
LibcryptErr::JsonError(ref e) => {
write!(f, "Failed to parse the provided string into JSON: {}", e)
}
LibcryptErr::InvalidConversion => {
write!(f, "Failed to perform the specified conversion")
}
LibcryptErr::NullPtr => write!(f, "Cryptsetup returned a null pointer"),
LibcryptErr::NoNull(s) => {
write!(f, "Static string {} was not created with c_str!() macro", s)
}
LibcryptErr::Other(ref s) => write!(f, "Failed with error: {}", s),
}
}
}
impl Error for LibcryptErr {}