125 lines
3 KiB
Rust
125 lines
3 KiB
Rust
//! Errors
|
|
use {
|
|
alloc::string::String,
|
|
core::fmt::{self, Display},
|
|
};
|
|
|
|
#[cfg(any(test, not(feature = "no_std")))]
|
|
use std::io;
|
|
|
|
/// The set of all possible errors
|
|
#[derive(Debug)]
|
|
pub enum Error {
|
|
/// Generic error
|
|
Other(String),
|
|
/// Bad magic number
|
|
BadMagic {
|
|
/// The magic number
|
|
magic: u16,
|
|
},
|
|
/// Out of bounds error
|
|
OutOfBounds {
|
|
/// index
|
|
index: usize,
|
|
},
|
|
/// Address out of bounds
|
|
AddressOutOfBounds {
|
|
///
|
|
sector: u32,
|
|
///
|
|
offset: u32,
|
|
|
|
///
|
|
size: usize,
|
|
},
|
|
/// Bad block group count
|
|
BadBlockGroupCount {
|
|
///
|
|
by_blocks: u32,
|
|
///
|
|
by_inodes: u32,
|
|
},
|
|
/// Inode Not Found
|
|
InodeNotFound {
|
|
/// inode number
|
|
inode: u32,
|
|
},
|
|
/// Inode is not a directory
|
|
NotADirectory {
|
|
/// inode number
|
|
inode: u32,
|
|
/// inode name
|
|
name: String,
|
|
},
|
|
/// Not Absolute Path
|
|
NotAbsolute {
|
|
/// path name
|
|
name: String,
|
|
},
|
|
|
|
/// Not Found
|
|
NotFound {
|
|
/// inode name
|
|
name: String,
|
|
},
|
|
// #[cfg(any(test, not(feature = "no_std")))]
|
|
// Io { inner: io::Error },
|
|
}
|
|
|
|
impl Display for Error {
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
match *self {
|
|
Error::Other(ref msg) => write!(f, "{}", msg),
|
|
Error::BadMagic {
|
|
magic,
|
|
} => write!(f, "invalid magic value: {}", magic),
|
|
Error::OutOfBounds {
|
|
index,
|
|
} => write!(f, "index ouf of bounds: {}", index),
|
|
Error::AddressOutOfBounds {
|
|
sector,
|
|
offset,
|
|
size,
|
|
} => write!(f, "address ouf of bounds: {}:{} with a block size of: {}",
|
|
sector, offset, size),
|
|
Error::BadBlockGroupCount {
|
|
by_blocks,
|
|
by_inodes,
|
|
} => write!(f, "conflicting block group count data; by blocks: {}, by inodes: {}", by_blocks, by_inodes),
|
|
Error::InodeNotFound {
|
|
inode,
|
|
} => write!(f, "couldn't find inode no. {}", &inode),
|
|
Error::NotADirectory {
|
|
inode,
|
|
ref name,
|
|
} => write!(f, "inode no. {} at: {} is not a directory", inode, &name),
|
|
Error::NotAbsolute {
|
|
ref name,
|
|
} => write!(f, "{} is not an absolute path", &name),
|
|
Error::NotFound {
|
|
ref name,
|
|
} => write!(f, "couldn't find {}", &name),
|
|
#[cfg(any(test, not(feature = "no_std")))]
|
|
Error::Io {
|
|
ref inner,
|
|
} => write!(f, "io error: {}", inner),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl From<Infallible> for Error {
|
|
fn from(_: Infallible) -> Error {
|
|
unreachable!()
|
|
}
|
|
}
|
|
|
|
#[cfg(any(test, not(feature = "no_std")))]
|
|
impl From<io::Error> for Error {
|
|
fn from(inner: io::Error) -> Error {
|
|
Error::Io { inner }
|
|
}
|
|
}
|
|
|
|
/// Infalliable
|
|
pub enum Infallible {}
|