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Write Hello, world! to a file and read it!

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This commit is contained in:
Yifan Wu 2020-12-19 18:32:01 +08:00
parent 015a8b6407
commit 8713046a4a
3 changed files with 21 additions and 3 deletions
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11
easy-fs/src/bin/main.rs
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@ -55,5 +55,16 @@ fn easy_fs_pack() -> std::io::Result<()> {
for name in root_inode.ls() {
println!("{}", name);
}
{
let filea = root_inode.find("filea").unwrap();
println!("writing filea!");
filea.write_at(0, "Hello, world!".as_bytes());
}
{
let filea = root_inode.find("filea").unwrap();
let mut buffer = [0u8; 512];
let len = filea.read_at(0, &mut buffer);
println!("{}", core::str::from_utf8(&buffer[..len]).unwrap());
}
Ok(())
}