Jeremy Soller
36 lines
800 B
Rust
36 lines
800 B
Rust
use std::fs::File;
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use std::io::{Error, Result, Read, Write, Seek, SeekFrom};
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use redoxfs::Disk;
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pub struct FileDisk {
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path: String,
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file: File
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}
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impl FileDisk {
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pub fn new(path: &str) -> Result<FileDisk> {
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let file = try!(File::open(path));
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Ok(FileDisk {
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path: path.to_string(),
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file: file
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})
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}
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}
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impl Disk<Error> for FileDisk {
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fn name(&self) -> &str {
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&self.path
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}
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fn read_at(&mut self, block: u64, buffer: &mut [u8]) -> Result<usize> {
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try!(self.file.seek(SeekFrom::Start(block * 512)));
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self.file.read(buffer)
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}
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fn write_at(&mut self, block: u64, buffer: &[u8]) -> Result<usize> {
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try!(self.file.seek(SeekFrom::Start(block * 512)));
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self.file.write(buffer)
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}
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}
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