small cleanup

src/main.rs

@@ -21,12 +21,24 @@ fn main() -> Result<()> {
     Ok(())
 }
 
+/// Export the ZFS pool after the backup so it can be re-encrypted.
+///
+/// # Errors
+///
+/// This function will return an error if the name of the backup pool is not provided or the pool
+/// cannot be exported.
 fn export_backup_pool() -> Result<()> {
     let pool_name = &read_var_from_file("backup_pool.txt")?;
     zpool_export(pool_name)?;
     Ok(())
 }
 
+/// Import the decrypted ZFS pool so that a backup can be sent.
+///
+/// # Errors
+///
+/// This function will return an error if the name of the backup pool is not provided or the pool
+/// cannot be imported.
 fn import_backup_pool() -> Result<()> {
     let pool_name = &read_var_from_file("backup_pool.txt")?;
     zpool_import(pool_name)?;

src/zfs.rs

@@ -7,12 +7,10 @@ use std::{
 
 use anyhow::{Result, anyhow, bail};
 
-use crate::cmd::zfs::{
+use crate::cmd::zfs::*;
-    pool_exists, zfs_list_main_datasets, zfs_list_snapshots, zfs_receive, zfs_send_absolute,
-    zfs_send_incremental, zpool_import,
-};
 use crate::io::read_vars_from_file;
 
+/// A ZFS pool. It holds the name of the pool and the list of datasets belonging to it.
 pub struct Pool {
     name: String,
     pub datasets: Vec<Dataset>,