btrfs_cli/filesystem/
df.rs

1use crate::{Format, Runnable, util::human_bytes};
2use anyhow::{Context, Result};
3use btrfs_uapi::space::space_info;
4use clap::Parser;
5use std::{fs::File, os::unix::io::AsFd, path::PathBuf};
6
7/// Show space usage information for a mounted filesystem
8#[derive(Parser, Debug)]
9pub struct FilesystemDfCommand {
10    pub path: PathBuf,
11}
12
13impl Runnable for FilesystemDfCommand {
14    fn run(&self, _format: Format, _dry_run: bool) -> Result<()> {
15        let file = File::open(&self.path).with_context(|| {
16            format!("failed to open '{}'", self.path.display())
17        })?;
18        let entries = space_info(file.as_fd()).with_context(|| {
19            format!("failed to get space info for '{}'", self.path.display())
20        })?;
21
22        for entry in &entries {
23            println!(
24                "{}: total={}, used={}",
25                entry.flags,
26                human_bytes(entry.total_bytes),
27                human_bytes(entry.used_bytes),
28            );
29        }
30
31        Ok(())
32    }
33}
btrfs_cli/filesystem/df.rs

btrfs_cli/filesystem/
df.rs
