490ab30f4c
Status: WIP Completed: * Fixed flagged clippy lints * Moved qemu(), main.rs::mount() and chroot() to the tools module. * Moved constants in main.rs to constants.rs (including base packages array) * Renamed Presets struct to PresetsCollection to avoid confusion with Preset struct * Moved main() to the top of main.rs to highlight general logic path * Added comments and docstrings to some functions * Removed some uses of `use foo::*` to make the source of imported functions and structs clearer TODO: * Move remaining code in main.rs to modules (except main()) * Break up create() function in to separate steps * Log every command run (with arguments) to debug! when verbose flag is used * Add docstrings for remaining functions and document constants (e.g. why noatime is used) * Remove remaining uses of `use foo::*` * Consider renaming/moving tools module to address tool:: vs. Tool:: confusion
51 lines
1.2 KiB
Rust
51 lines
1.2 KiB
Rust
use crate::error::{Error, ErrorKind};
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use crate::tool::Tool;
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use failure::ResultExt;
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use log::info;
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use std::path::{Path, PathBuf};
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#[derive(Debug)]
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pub struct LoopDevice {
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path: PathBuf,
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losetup: Tool,
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}
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impl LoopDevice {
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pub fn create(file: &Path) -> Result<Self, Error> {
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let losetup = Tool::find("losetup")?;
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let output = losetup
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.execute()
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.args(&["--find", "-P", "--show"])
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.arg(file)
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.output()
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.context(ErrorKind::Image)?;
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if !output.status.success() {
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return Err(ErrorKind::Losetup(String::from_utf8(output.stderr).unwrap()).into());
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}
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let path = PathBuf::from(String::from_utf8(output.stdout).unwrap().trim());
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info!("Mounted {} to {}", file.display(), path.display());
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Ok(LoopDevice { path, losetup })
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}
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pub fn path(&self) -> &Path {
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&self.path
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}
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}
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impl Drop for LoopDevice {
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fn drop(&mut self) {
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info!("Detaching loop device {}", self.path.display());
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self.losetup
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.execute()
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.arg("-d")
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.arg(&self.path)
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.spawn()
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.unwrap()
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.wait()
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.ok();
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}
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}
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