rust: use rustfmt defaults

follow the kernel style guide, i.e idiomatic rust style.

Signed-off-by: Alexander Fougner <fougner89@gmail.com>

4 files changed, 355 insertions, 357 deletions

diff --git a/rust-src/mount/src/filesystem.rs b/rust-src/mount/src/filesystem.rs
index 89865bc4..430d3c64 100644
--- a/rust-src/mount/src/filesystem.rs
+++ b/rust-src/mount/src/filesystem.rs
@@ -1,158 +1,159 @@
 extern "C" {
-	pub static stdout: *mut libc::FILE;
+    pub static stdout: *mut libc::FILE;
 }
 
 use getset::{CopyGetters, Getters};
 use std::path::PathBuf;
 #[derive(Getters, CopyGetters)]
 pub struct FileSystem {
-	/// External UUID of the bcachefs
-	#[getset(get = "pub")]
-	uuid: uuid::Uuid,
-	/// Whether filesystem is encrypted
-	#[getset(get_copy = "pub")]
-	encrypted: bool,
-	/// Super block
-	#[getset(get = "pub")]
-	sb: bcachefs::bch_sb_handle,
-	/// Member devices for this filesystem
-	#[getset(get = "pub")]
-	devices: Vec<PathBuf>,
+    /// External UUID of the bcachefs
+    #[getset(get = "pub")]
+    uuid: uuid::Uuid,
+    /// Whether filesystem is encrypted
+    #[getset(get_copy = "pub")]
+    encrypted: bool,
+    /// Super block
+    #[getset(get = "pub")]
+    sb: bcachefs::bch_sb_handle,
+    /// Member devices for this filesystem
+    #[getset(get = "pub")]
+    devices: Vec<PathBuf>,
 }
 impl std::fmt::Debug for FileSystem {
-	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-		f.debug_struct("FileSystem")
-			.field("uuid", &self.uuid)
-			.field("encrypted", &self.encrypted)
-			.field("devices", &self.device_string())
-			.finish()
-	}
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("FileSystem")
+            .field("uuid", &self.uuid)
+            .field("encrypted", &self.encrypted)
+            .field("devices", &self.device_string())
+            .finish()
+    }
 }
 use std::fmt;
 impl std::fmt::Display for FileSystem {
-	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-		let devs = self.device_string();
-		write!(
-			f,
-			"{:?}: locked?={lock} ({}) ",
-			self.uuid,
-			devs,
-			lock = self.encrypted
-		)
-	}
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        let devs = self.device_string();
+        write!(
+            f,
+            "{:?}: locked?={lock} ({}) ",
+            self.uuid,
+            devs,
+            lock = self.encrypted
+        )
+    }
 }
 
 impl FileSystem {
-	pub(crate) fn new(sb: bcachefs::bch_sb_handle) -> Self {
-		Self {
-			uuid: sb.sb().uuid(),
-			encrypted: sb.sb().crypt().is_some(),
-			sb: sb,
-			devices: Vec::new(),
-		}
-	}
-
-	pub fn device_string(&self) -> String {
-		use itertools::Itertools;
-		self.devices.iter().map(|d| d.display()).join(":")
-	}
-
-	pub fn mount(
-		&self,
-		target: impl AsRef<std::path::Path>,
-		options: impl AsRef<str>,
-	) -> anyhow::Result<()> {
-		tracing::info_span!("mount").in_scope(|| {
-			let src = self.device_string();
-			let (data, mountflags) = parse_mount_options(options);
-			// let fstype = c_str!("bcachefs");
-
-			tracing::info!(msg="mounting bcachefs filesystem", target=%target.as_ref().display());
-			mount_inner(src, target, "bcachefs", mountflags, data)
-		})
-	}
+    pub(crate) fn new(sb: bcachefs::bch_sb_handle) -> Self {
+        Self {
+            uuid: sb.sb().uuid(),
+            encrypted: sb.sb().crypt().is_some(),
+            sb: sb,
+            devices: Vec::new(),
+        }
+    }
+
+    pub fn device_string(&self) -> String {
+        use itertools::Itertools;
+        self.devices.iter().map(|d| d.display()).join(":")
+    }
+
+    pub fn mount(
+        &self,
+        target: impl AsRef<std::path::Path>,
+        options: impl AsRef<str>,
+    ) -> anyhow::Result<()> {
+        tracing::info_span!("mount").in_scope(|| {
+            let src = self.device_string();
+            let (data, mountflags) = parse_mount_options(options);
+            // let fstype = c_str!("bcachefs");
+
+            tracing::info!(msg="mounting bcachefs filesystem", target=%target.as_ref().display());
+            mount_inner(src, target, "bcachefs", mountflags, data)
+        })
+    }
 }
 
 fn mount_inner(
-	src: String,
-	target: impl AsRef<std::path::Path>,
-	fstype: &str,
-	mountflags: u64,
-	data: Option<String>,
+    src: String,
+    target: impl AsRef<std::path::Path>,
+    fstype: &str,
+    mountflags: u64,
+    data: Option<String>,
 ) -> anyhow::Result<()> {
-	use std::{
-		ffi::{c_void, CString},
-		os::{raw::c_char, unix::ffi::OsStrExt},
-	};
-
-	// bind the CStrings to keep them alive
-	let src = CString::new(src)?;
-	let target = CString::new(target.as_ref().as_os_str().as_bytes())?;
-	let data = data.map(CString::new).transpose()?;
-	let fstype = CString::new(fstype)?;
-
-	// convert to pointers for ffi
-	let src = src.as_c_str().to_bytes_with_nul().as_ptr() as *const c_char;
-	let target = target.as_c_str().to_bytes_with_nul().as_ptr() as *const c_char;
-	let data = data.as_ref().map_or(std::ptr::null(), |data| {
-		data.as_c_str().to_bytes_with_nul().as_ptr() as *const c_void
-	});
-	let fstype = fstype.as_c_str().to_bytes_with_nul().as_ptr() as *const c_char;
-	
-	let ret = {let _entered = tracing::info_span!("libc::mount").entered();
-		tracing::info!("mounting filesystem");
-		// REQUIRES: CAP_SYS_ADMIN
-		unsafe { libc::mount(src, target, fstype, mountflags, data) }
-	};
-	match ret {
-		0 => Ok(()),
-		_ => Err(crate::ErrnoError(errno::errno()).into()),
-	}
+    use std::{
+        ffi::{c_void, CString},
+        os::{raw::c_char, unix::ffi::OsStrExt},
+    };
+
+    // bind the CStrings to keep them alive
+    let src = CString::new(src)?;
+    let target = CString::new(target.as_ref().as_os_str().as_bytes())?;
+    let data = data.map(CString::new).transpose()?;
+    let fstype = CString::new(fstype)?;
+
+    // convert to pointers for ffi
+    let src = src.as_c_str().to_bytes_with_nul().as_ptr() as *const c_char;
+    let target = target.as_c_str().to_bytes_with_nul().as_ptr() as *const c_char;
+    let data = data.as_ref().map_or(std::ptr::null(), |data| {
+        data.as_c_str().to_bytes_with_nul().as_ptr() as *const c_void
+    });
+    let fstype = fstype.as_c_str().to_bytes_with_nul().as_ptr() as *const c_char;
+
+    let ret = {
+        let _entered = tracing::info_span!("libc::mount").entered();
+        tracing::info!("mounting filesystem");
+        // REQUIRES: CAP_SYS_ADMIN
+        unsafe { libc::mount(src, target, fstype, mountflags, data) }
+    };
+    match ret {
+        0 => Ok(()),
+        _ => Err(crate::ErrnoError(errno::errno()).into()),
+    }
 }
 
 /// Parse a comma-separated mount options and split out mountflags and filesystem
 /// specific options.
 #[tracing_attributes::instrument(skip(options))]
 fn parse_mount_options(options: impl AsRef<str>) -> (Option<String>, u64) {
-	use either::Either::*;
-	tracing::debug!(msg="parsing mount options", options=?options.as_ref());
-	let (opts, flags) = options
-		.as_ref()
-		.split(",")
-		.map(|o| match o {
-			"dirsync" => Left(libc::MS_DIRSYNC),
-			"lazytime" => Left(1 << 25), // MS_LAZYTIME
-			"mand" => Left(libc::MS_MANDLOCK),
-			"noatime" => Left(libc::MS_NOATIME),
-			"nodev" => Left(libc::MS_NODEV),
-			"nodiratime" => Left(libc::MS_NODIRATIME),
-			"noexec" => Left(libc::MS_NOEXEC),
-			"nosuid" => Left(libc::MS_NOSUID),
-			"ro" => Left(libc::MS_RDONLY),
-			"rw" => Left(0),
-			"relatime" => Left(libc::MS_RELATIME),
-			"strictatime" => Left(libc::MS_STRICTATIME),
-			"sync" => Left(libc::MS_SYNCHRONOUS),
-			"" => Left(0),
-			o @ _ => Right(o),
-		})
-		.fold((Vec::new(), 0), |(mut opts, flags), next| match next {
-			Left(f) => (opts, flags | f),
-			Right(o) => {
-				opts.push(o);
-				(opts, flags)
-			}
-		});
-
-	use itertools::Itertools;
-	(
-		if opts.len() == 0 {
-			None
-		} else {
-			Some(opts.iter().join(","))
-		},
-		flags,
-	)
+    use either::Either::*;
+    tracing::debug!(msg="parsing mount options", options=?options.as_ref());
+    let (opts, flags) = options
+        .as_ref()
+        .split(",")
+        .map(|o| match o {
+            "dirsync" => Left(libc::MS_DIRSYNC),
+            "lazytime" => Left(1 << 25), // MS_LAZYTIME
+            "mand" => Left(libc::MS_MANDLOCK),
+            "noatime" => Left(libc::MS_NOATIME),
+            "nodev" => Left(libc::MS_NODEV),
+            "nodiratime" => Left(libc::MS_NODIRATIME),
+            "noexec" => Left(libc::MS_NOEXEC),
+            "nosuid" => Left(libc::MS_NOSUID),
+            "ro" => Left(libc::MS_RDONLY),
+            "rw" => Left(0),
+            "relatime" => Left(libc::MS_RELATIME),
+            "strictatime" => Left(libc::MS_STRICTATIME),
+            "sync" => Left(libc::MS_SYNCHRONOUS),
+            "" => Left(0),
+            o @ _ => Right(o),
+        })
+        .fold((Vec::new(), 0), |(mut opts, flags), next| match next {
+            Left(f) => (opts, flags | f),
+            Right(o) => {
+                opts.push(o);
+                (opts, flags)
+            }
+        });
+
+    use itertools::Itertools;
+    (
+        if opts.len() == 0 {
+            None
+        } else {
+            Some(opts.iter().join(","))
+        },
+        flags,
+    )
 }
 
 use bch_bindgen::bcachefs;
@@ -161,53 +162,57 @@ use uuid::Uuid;
 
 #[tracing_attributes::instrument]
 pub fn probe_filesystems() -> anyhow::Result<HashMap<Uuid, FileSystem>> {
-	tracing::trace!("enumerating udev devices");
-	let mut udev = udev::Enumerator::new()?;
-
-	udev.match_subsystem("block")?; // find kernel block devices
-
-	let mut fs_map = HashMap::new();
-	let devresults = 
-			udev.scan_devices()?
-			.into_iter()
-			.filter_map(|dev| dev.devnode().map(ToOwned::to_owned));
-	
-	for pathbuf in devresults {
-		match get_super_block_uuid(&pathbuf)? {
-
-				Ok((uuid_key, superblock)) => {
-					let fs = fs_map.entry(uuid_key).or_insert_with(|| {
-						tracing::info!(msg="found bcachefs pool", uuid=?uuid_key);
-						FileSystem::new(superblock)
-					});
-
-					fs.devices.push(pathbuf);
-				},
-
-				Err(e) => { tracing::debug!(inner2_error=?e);}
-		}
-	}
-
-	
-	tracing::info!(msg = "found filesystems", count = fs_map.len());
-	Ok(fs_map)
+    tracing::trace!("enumerating udev devices");
+    let mut udev = udev::Enumerator::new()?;
+
+    udev.match_subsystem("block")?; // find kernel block devices
+
+    let mut fs_map = HashMap::new();
+    let devresults = udev
+        .scan_devices()?
+        .into_iter()
+        .filter_map(|dev| dev.devnode().map(ToOwned::to_owned));
+
+    for pathbuf in devresults {
+        match get_super_block_uuid(&pathbuf)? {
+            Ok((uuid_key, superblock)) => {
+                let fs = fs_map.entry(uuid_key).or_insert_with(|| {
+                    tracing::info!(msg="found bcachefs pool", uuid=?uuid_key);
+                    FileSystem::new(superblock)
+                });
+
+                fs.devices.push(pathbuf);
+            }
+
+            Err(e) => {
+                tracing::debug!(inner2_error=?e);
+            }
+        }
+    }
+
+    tracing::info!(msg = "found filesystems", count = fs_map.len());
+    Ok(fs_map)
 }
 
 // #[tracing_attributes::instrument(skip(dev, fs_map))]
-fn get_super_block_uuid(path: &std::path::Path) -> std::io::Result<std::io::Result<(Uuid, bcachefs::bch_sb_handle)>> {
-	use gag::{BufferRedirect};
-	// Stop libbcachefs from spamming the output
-	let gag = BufferRedirect::stdout().unwrap();
-
-	let sb = bch_bindgen::rs::read_super(&path)?;
-	let super_block = match sb { 
-		Err(e) => { return Ok(Err(e)); }
-		Ok(sb) => sb,
-	};
-	drop(gag);
-
-	let uuid = (&super_block).sb().uuid();
-	tracing::debug!(found="bcachefs superblock", devnode=?path, ?uuid);
-
-	Ok(Ok((uuid, super_block)))
+fn get_super_block_uuid(
+    path: &std::path::Path,
+) -> std::io::Result<std::io::Result<(Uuid, bcachefs::bch_sb_handle)>> {
+    use gag::BufferRedirect;
+    // Stop libbcachefs from spamming the output
+    let gag = BufferRedirect::stdout().unwrap();
+
+    let sb = bch_bindgen::rs::read_super(&path)?;
+    let super_block = match sb {
+        Err(e) => {
+            return Ok(Err(e));
+        }
+        Ok(sb) => sb,
+    };
+    drop(gag);
+
+    let uuid = (&super_block).sb().uuid();
+    tracing::debug!(found="bcachefs superblock", devnode=?path, ?uuid);
+
+    Ok(Ok((uuid, super_block)))
 }
diff --git a/rust-src/mount/src/key.rs b/rust-src/mount/src/key.rs
index 5e64da54..454e641e 100644
--- a/rust-src/mount/src/key.rs
+++ b/rust-src/mount/src/key.rs
@@ -1,97 +1,97 @@
 use tracing::info;
 
 fn check_for_key(key_name: &std::ffi::CStr) -> anyhow::Result<bool> {
-	use bch_bindgen::keyutils::{self, keyctl_search};
-	let key_name = key_name.to_bytes_with_nul().as_ptr() as *const _;
-	let key_type = c_str!("logon");
+    use bch_bindgen::keyutils::{self, keyctl_search};
+    let key_name = key_name.to_bytes_with_nul().as_ptr() as *const _;
+    let key_type = c_str!("logon");
 
-	let key_id = unsafe { keyctl_search(keyutils::KEY_SPEC_USER_KEYRING, key_type, key_name, 0) };
-	if key_id > 0 {
-		info!("Key has became avaiable");
-		Ok(true)
-	} else if errno::errno().0 != libc::ENOKEY {
-		Err(crate::ErrnoError(errno::errno()).into())
-	} else {
-		Ok(false)
-	}
+    let key_id = unsafe { keyctl_search(keyutils::KEY_SPEC_USER_KEYRING, key_type, key_name, 0) };
+    if key_id > 0 {
+        info!("Key has became avaiable");
+        Ok(true)
+    } else if errno::errno().0 != libc::ENOKEY {
+        Err(crate::ErrnoError(errno::errno()).into())
+    } else {
+        Ok(false)
+    }
 }
 
 fn wait_for_key(uuid: &uuid::Uuid) -> anyhow::Result<()> {
-	let key_name = std::ffi::CString::new(format!("bcachefs:{}", uuid)).unwrap();
-	loop {
-		if check_for_key(&key_name)? {
-			break Ok(());
-		}
+    let key_name = std::ffi::CString::new(format!("bcachefs:{}", uuid)).unwrap();
+    loop {
+        if check_for_key(&key_name)? {
+            break Ok(());
+        }
 
-		std::thread::sleep(std::time::Duration::from_secs(1));
-	}
+        std::thread::sleep(std::time::Duration::from_secs(1));
+    }
 }
 
 const BCH_KEY_MAGIC: &str = "bch**key";
 use crate::filesystem::FileSystem;
 fn ask_for_key(fs: &FileSystem) -> anyhow::Result<()> {
-	use anyhow::anyhow;
-	use byteorder::{LittleEndian, ReadBytesExt};
-	use bch_bindgen::bcachefs::{self, bch2_chacha_encrypt_key, bch_encrypted_key, bch_key};
-	use std::os::raw::c_char;
+    use anyhow::anyhow;
+    use bch_bindgen::bcachefs::{self, bch2_chacha_encrypt_key, bch_encrypted_key, bch_key};
+    use byteorder::{LittleEndian, ReadBytesExt};
+    use std::os::raw::c_char;
 
-	let key_name = std::ffi::CString::new(format!("bcachefs:{}", fs.uuid())).unwrap();
-	if check_for_key(&key_name)? {
-		return Ok(());
-	}
+    let key_name = std::ffi::CString::new(format!("bcachefs:{}", fs.uuid())).unwrap();
+    if check_for_key(&key_name)? {
+        return Ok(());
+    }
 
-	let bch_key_magic = BCH_KEY_MAGIC.as_bytes().read_u64::<LittleEndian>().unwrap();
-	let crypt = fs.sb().sb().crypt().unwrap();
-	let pass = rpassword::read_password_from_tty(Some("Enter passphrase: "))?;
-	let pass = std::ffi::CString::new(pass.trim_end())?; // bind to keep the CString alive
-	let mut output: bch_key = unsafe {
-		bcachefs::derive_passphrase(
-			crypt as *const _ as *mut _,
-			pass.as_c_str().to_bytes_with_nul().as_ptr() as *const _,
-		)
-	};
+    let bch_key_magic = BCH_KEY_MAGIC.as_bytes().read_u64::<LittleEndian>().unwrap();
+    let crypt = fs.sb().sb().crypt().unwrap();
+    let pass = rpassword::read_password_from_tty(Some("Enter passphrase: "))?;
+    let pass = std::ffi::CString::new(pass.trim_end())?; // bind to keep the CString alive
+    let mut output: bch_key = unsafe {
+        bcachefs::derive_passphrase(
+            crypt as *const _ as *mut _,
+            pass.as_c_str().to_bytes_with_nul().as_ptr() as *const _,
+        )
+    };
 
-	let mut key = crypt.key().clone();
-	let ret = unsafe {
-		bch2_chacha_encrypt_key(
-			&mut output as *mut _,
-			fs.sb().sb().nonce(),
-			&mut key as *mut _ as *mut _,
-			std::mem::size_of::<bch_encrypted_key>() as usize,
-		)
-	};
-	if ret != 0 {
-		Err(anyhow!("chacha decryption failure"))
-	} else if key.magic != bch_key_magic {
-		Err(anyhow!("failed to verify the password"))
-	} else {
-		let key_type = c_str!("logon");
-		let ret = unsafe {
-			bch_bindgen::keyutils::add_key(
-				key_type,
-				key_name.as_c_str().to_bytes_with_nul() as *const _ as *const c_char,
-				&output as *const _ as *const _,
-				std::mem::size_of::<bch_key>() as usize,
-				bch_bindgen::keyutils::KEY_SPEC_USER_KEYRING,
-			)
-		};
-		if ret == -1 {
-			Err(anyhow!("failed to add key to keyring: {}", errno::errno()))
-		} else {
-			Ok(())
-		}
-	}
+    let mut key = crypt.key().clone();
+    let ret = unsafe {
+        bch2_chacha_encrypt_key(
+            &mut output as *mut _,
+            fs.sb().sb().nonce(),
+            &mut key as *mut _ as *mut _,
+            std::mem::size_of::<bch_encrypted_key>() as usize,
+        )
+    };
+    if ret != 0 {
+        Err(anyhow!("chacha decryption failure"))
+    } else if key.magic != bch_key_magic {
+        Err(anyhow!("failed to verify the password"))
+    } else {
+        let key_type = c_str!("logon");
+        let ret = unsafe {
+            bch_bindgen::keyutils::add_key(
+                key_type,
+                key_name.as_c_str().to_bytes_with_nul() as *const _ as *const c_char,
+                &output as *const _ as *const _,
+                std::mem::size_of::<bch_key>() as usize,
+                bch_bindgen::keyutils::KEY_SPEC_USER_KEYRING,
+            )
+        };
+        if ret == -1 {
+            Err(anyhow!("failed to add key to keyring: {}", errno::errno()))
+        } else {
+            Ok(())
+        }
+    }
 }
 
 #[tracing_attributes::instrument]
 pub fn prepare_key(fs: &FileSystem, password: crate::KeyLocation) -> anyhow::Result<()> {
-	use crate::KeyLocation::*;
-	use anyhow::anyhow;
+    use crate::KeyLocation::*;
+    use anyhow::anyhow;
 
-	tracing::info!(msg = "checking if key exists for filesystem");
-	match password {
-		Fail => Err(anyhow!("no key available")),
-		Wait => Ok(wait_for_key(fs.uuid())?),
-		Ask => ask_for_key(fs),
-	}
+    tracing::info!(msg = "checking if key exists for filesystem");
+    match password {
+        Fail => Err(anyhow!("no key available")),
+        Wait => Ok(wait_for_key(fs.uuid())?),
+        Ask => ask_for_key(fs),
+    }
 }
diff --git a/rust-src/mount/src/lib.rs b/rust-src/mount/src/lib.rs
index 554ed798..f2964561 100644
--- a/rust-src/mount/src/lib.rs
+++ b/rust-src/mount/src/lib.rs
@@ -3,99 +3,99 @@ use clap::Parser;
 use uuid::Uuid;
 
 pub mod err {
-	pub enum GError {
-		Unknown{
-			message: std::borrow::Cow<'static, String>
-		 }
-	}
-	pub type GResult<T, E, OE> =::core::result::Result< ::core::result::Result<T, E>, OE>;
-	pub type Result<T, E> = GResult<T, E, GError>;
+    pub enum GError {
+        Unknown {
+            message: std::borrow::Cow<'static, String>,
+        },
+    }
+    pub type GResult<T, E, OE> = ::core::result::Result<::core::result::Result<T, E>, OE>;
+    pub type Result<T, E> = GResult<T, E, GError>;
 }
 
 #[macro_export]
 macro_rules! c_str {
-	($lit:expr) => {
-		unsafe {
-			std::ffi::CStr::from_ptr(concat!($lit, "\0").as_ptr() as *const std::os::raw::c_char)
-				.to_bytes_with_nul()
-				.as_ptr() as *const std::os::raw::c_char
-		}
-	};
+    ($lit:expr) => {
+        unsafe {
+            std::ffi::CStr::from_ptr(concat!($lit, "\0").as_ptr() as *const std::os::raw::c_char)
+                .to_bytes_with_nul()
+                .as_ptr() as *const std::os::raw::c_char
+        }
+    };
 }
 
 #[derive(Debug)]
 struct ErrnoError(errno::Errno);
 impl std::fmt::Display for ErrnoError {
-	fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
-		self.0.fmt(f)
-	}
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
+        self.0.fmt(f)
+    }
 }
 impl std::error::Error for ErrnoError {}
 
 #[derive(Clone, Debug)]
 pub enum KeyLocation {
-	Fail,
-	Wait,
-	Ask,
+    Fail,
+    Wait,
+    Ask,
 }
 
 #[derive(Clone, Debug)]
 pub struct KeyLoc(pub Option<KeyLocation>);
 impl std::ops::Deref for KeyLoc {
-	type Target = Option<KeyLocation>;
-	fn deref(&self) -> &Self::Target {
-		&self.0
-	}
+    type Target = Option<KeyLocation>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
 }
 impl std::str::FromStr for KeyLoc {
-	type Err = anyhow::Error;
-	fn from_str(s: &str) -> anyhow::Result<Self> {
-		// use anyhow::anyhow;
-		match s {
-			"" => Ok(KeyLoc(None)),
-			"fail" => Ok(KeyLoc(Some(KeyLocation::Fail))),
-			"wait" => Ok(KeyLoc(Some(KeyLocation::Wait))),
-			"ask" => Ok(KeyLoc(Some(KeyLocation::Ask))),
-			_ => Err(anyhow!("invalid password option")),
-		}
-	}
+    type Err = anyhow::Error;
+    fn from_str(s: &str) -> anyhow::Result<Self> {
+        // use anyhow::anyhow;
+        match s {
+            "" => Ok(KeyLoc(None)),
+            "fail" => Ok(KeyLoc(Some(KeyLocation::Fail))),
+            "wait" => Ok(KeyLoc(Some(KeyLocation::Wait))),
+            "ask" => Ok(KeyLoc(Some(KeyLocation::Ask))),
+            _ => Err(anyhow!("invalid password option")),
+        }
+    }
 }
 
 fn parse_fstab_uuid(uuid_raw: &str) -> Result<Uuid, uuid::Error> {
-	let mut uuid = String::from(uuid_raw);
-	if uuid.starts_with("UUID=") {
-		uuid = uuid.replacen("UUID=", "", 1);
-	}
-	return Uuid::parse_str(&uuid);
+    let mut uuid = String::from(uuid_raw);
+    if uuid.starts_with("UUID=") {
+        uuid = uuid.replacen("UUID=", "", 1);
+    }
+    return Uuid::parse_str(&uuid);
 }
 
 /// Mount a bcachefs filesystem by its UUID.
 #[derive(Parser, Debug)]
 #[command(author, version, about, long_about = None)]
 pub struct Cli {
-	/// Where the password would be loaded from.
-	///
-	/// Possible values are:
-	/// "fail" - don't ask for password, fail if filesystem is encrypted;
-	/// "wait" - wait for password to become available before mounting;
-	/// "ask" -  prompt the user for password;
-	#[arg(short, long, default_value = "", verbatim_doc_comment)]
-	pub key_location: KeyLoc,
+    /// Where the password would be loaded from.
+    ///
+    /// Possible values are:
+    /// "fail" - don't ask for password, fail if filesystem is encrypted;
+    /// "wait" - wait for password to become available before mounting;
+    /// "ask" -  prompt the user for password;
+    #[arg(short, long, default_value = "", verbatim_doc_comment)]
+    pub key_location: KeyLoc,
 
-	/// External UUID of the bcachefs filesystem
-	///
-	/// Accepts the UUID as is or as fstab style UUID=<UUID>
-	#[arg(value_parser=parse_fstab_uuid)]
-	pub uuid: uuid::Uuid,
+    /// External UUID of the bcachefs filesystem
+    ///
+    /// Accepts the UUID as is or as fstab style UUID=<UUID>
+    #[arg(value_parser=parse_fstab_uuid)]
+    pub uuid: uuid::Uuid,
 
-	/// Where the filesystem should be mounted. If not set, then the filesystem
-	/// won't actually be mounted. But all steps preceeding mounting the
-	/// filesystem (e.g. asking for passphrase) will still be performed.
-	pub mountpoint: Option<std::path::PathBuf>,
+    /// Where the filesystem should be mounted. If not set, then the filesystem
+    /// won't actually be mounted. But all steps preceeding mounting the
+    /// filesystem (e.g. asking for passphrase) will still be performed.
+    pub mountpoint: Option<std::path::PathBuf>,
 
-	/// Mount options
-	#[arg(short, default_value = "")]
-	pub options: String,
+    /// Mount options
+    #[arg(short, default_value = "")]
+    pub options: String,
 }
 
 pub mod filesystem;
@@ -105,6 +105,6 @@ pub mod key;
 
 #[test]
 fn verify_cli() {
-	use clap::CommandFactory;
-	Cli::command().debug_assert()
+    use clap::CommandFactory;
+    Cli::command().debug_assert()
 }
diff --git a/rust-src/mount/src/main.rs b/rust-src/mount/src/main.rs
index 66a60d9a..3e4cee89 100644
--- a/rust-src/mount/src/main.rs
+++ b/rust-src/mount/src/main.rs
@@ -1,64 +1,57 @@
-
 use clap::Parser;
 
 fn main() {
-	// convert existing log statements to tracing events
-	// tracing_log::LogTracer::init().expect("logtracer init failed!");
-	// format tracing log data to env_logger like stdout
-	tracing_subscriber::fmt::init();
-
-	if let Err(e) = crate::main_inner() {
-		tracing::error!(fatal_error = ?e);
-	}
+    // convert existing log statements to tracing events
+    // tracing_log::LogTracer::init().expect("logtracer init failed!");
+    // format tracing log data to env_logger like stdout
+    tracing_subscriber::fmt::init();
+
+    if let Err(e) = crate::main_inner() {
+        tracing::error!(fatal_error = ?e);
+    }
 }
 
-
 #[tracing_attributes::instrument("main")]
 pub fn main_inner() -> anyhow::Result<()> {
-	use bcachefs_mount::{Cli, filesystem, key};
-	unsafe {
-		libc::setvbuf(
-			filesystem::stdout,
-			std::ptr::null_mut(),
-			libc::_IONBF,
-			0,
-		);
-		// libc::fflush(filesystem::stdout);
-	}
+    use bcachefs_mount::{filesystem, key, Cli};
+    unsafe {
+        libc::setvbuf(filesystem::stdout, std::ptr::null_mut(), libc::_IONBF, 0);
+        // libc::fflush(filesystem::stdout);
+    }
 
-	let opt = Cli::parse();
+    let opt = Cli::parse();
 
-	tracing::trace!(?opt);
+    tracing::trace!(?opt);
 
-	let fss = filesystem::probe_filesystems()?;
-	let fs = fss
-		.get(&opt.uuid)
-		.ok_or_else(|| anyhow::anyhow!("filesystem was not found"))?;
+    let fss = filesystem::probe_filesystems()?;
+    let fs = fss
+        .get(&opt.uuid)
+        .ok_or_else(|| anyhow::anyhow!("filesystem was not found"))?;
 
-	tracing::info!(msg="found filesystem", %fs);
-	if fs.encrypted() {
-		let key = opt
-			.key_location
-			.0
-			.ok_or_else(|| anyhow::anyhow!("no keyoption specified for locked filesystem"))?;
+    tracing::info!(msg="found filesystem", %fs);
+    if fs.encrypted() {
+        let key = opt
+            .key_location
+            .0
+            .ok_or_else(|| anyhow::anyhow!("no keyoption specified for locked filesystem"))?;
 
-		key::prepare_key(&fs, key)?;
-	}
+        key::prepare_key(&fs, key)?;
+    }
 
-	let mountpoint = opt
-		.mountpoint
-		.ok_or_else(|| anyhow::anyhow!("mountpoint option was not specified"))?;
+    let mountpoint = opt
+        .mountpoint
+        .ok_or_else(|| anyhow::anyhow!("mountpoint option was not specified"))?;
 
-	fs.mount(&mountpoint, &opt.options)?;
+    fs.mount(&mountpoint, &opt.options)?;
 
-	Ok(())
+    Ok(())
 }
 
 #[cfg(test)]
 mod test {
-	// use insta::assert_debug_snapshot;
-	// #[test]
-	// fn snapshot_testing() {
-	// 	insta::assert_debug_snapshot!();
-	// }
+    // use insta::assert_debug_snapshot;
+    // #[test]
+    // fn snapshot_testing() {
+    //  insta::assert_debug_snapshot!();
+    // }
 }