tree-wide: cargo clippy --fix + a few manual warning fixes

build.rs

@@ -6,7 +6,7 @@ fn detect_fedora_feature() -> Result<()> {
         return Ok(());
     }
     let p = std::process::Command::new("sh")
-        .args(&["-c", ". /usr/lib/os-release && echo ${ID}"])
+        .args(["-c", ". /usr/lib/os-release && echo ${ID}"])
         .stdout(std::process::Stdio::piped())
         .output()?;
     let out = std::str::from_utf8(&p.stdout).ok().map(|s| s.trim());

rust/src/builtins/apply_live.rs

@@ -32,16 +32,16 @@ fn get_args_variant(sysroot: &ostree::Sysroot, opts: &Opts) -> Result<glib::Vari
         if opts.reset {
             return Err(anyhow!("Cannot specify both --target and --reset"));
         }
-        r.insert(live::OPT_TARGET, &target.as_str());
+        r.insert(live::OPT_TARGET, target.as_str());
     } else if opts.reset {
         let booted = sysroot.require_booted_deployment()?;
         // Unwrap safety: This can't return NULL
         let csum = booted.csum();
-        r.insert(live::OPT_TARGET, &csum.as_str());
+        r.insert(live::OPT_TARGET, csum.as_str());
     }
 
     if opts.allow_replacement {
-        r.insert(live::OPT_REPLACE, &true);
+        r.insert(live::OPT_REPLACE, true);
     }
 
     Ok(r.end())
@@ -97,15 +97,15 @@ pub(crate) fn applylive_finish(sysroot: &crate::ffi::OstreeSysroot) -> CxxResult
     } else {
         let lib_diff = ostree_ext::diff::diff(
             repo,
-            &booted_commit,
-            &live_state.commit.as_str(),
+            booted_commit,
+            live_state.commit.as_str(),
             Some("/usr/lib/systemd/system"),
         )?;
 
         let etc_diff = ostree_ext::diff::diff(
             repo,
-            &booted_commit,
-            &live_state.commit.as_str(),
+            booted_commit,
+            live_state.commit.as_str(),
             Some("/usr/etc/systemd/system"),
         )?;
 
@@ -129,7 +129,7 @@ pub(crate) fn applylive_finish(sysroot: &crate::ffi::OstreeSysroot) -> CxxResult
         crate::ffi::output_message(
             "Successfully updated running filesystem tree; Following services may need to be restarted:");
         for service in changed {
-            crate::ffi::output_message(&format!("{}", service.strip_prefix('/').unwrap()));
+            crate::ffi::output_message(service.strip_prefix('/').unwrap());
         }
     }
     Ok(())

rust/src/builtins/compose/mod.rs

@@ -61,7 +61,7 @@ fn legacy_prepare_dev(rootfs: &Dir) -> Result<()> {
         // file so it can use `fchmod()` which may fail for special things like `/dev/tty`.
         // We have no concerns about following symlinks because we know we just created
         // the device and there are no concurrent writers.
-        rustix::fs::chmodat(&dest_dir.as_fd(), nodename, mode, AtFlags::empty())
+        rustix::fs::chmodat(dest_dir.as_fd(), nodename, mode, AtFlags::empty())
             .with_context(|| format!("Setting permissions of target {}", nodename))?;
     }
     smoketest_dev_null(dest_dir)?;

rust/src/builtins/scriptlet_intercept/useradd.rs

@@ -53,7 +53,7 @@ pub(crate) fn entrypoint(args: &[&str]) -> Result<()> {
     if let Some(groups) = supplementary_groups {
         for group in groups {
             crate::builtins::scriptlet_intercept::usermod::generate_sysusers_fragment(
-                &rootdir, username, &group,
+                &rootdir, username, group,
             )?;
         }
     }

rust/src/builtins/usroverlay.rs

@@ -8,8 +8,8 @@ use std::os::unix::prelude::CommandExt;
 /// Directly exec(ostree admin unlock) - does not return on success.
 pub fn usroverlay_entrypoint(args: &Vec<String>) -> Result<()> {
     let exec_err = std::process::Command::new("ostree")
-        .args(&["admin", "unlock"])
-        .args(args.into_iter().skip(1))
+        .args(["admin", "unlock"])
+        .args(args.iter().skip(1))
         .exec();
     // This is only reached if the `exec()` above failed; otherwise
     // execution got transferred to `ostree` at that point.

rust/src/bwrap.rs

@@ -138,7 +138,7 @@ impl Drop for RoFilesMount {
             return;
         };
         // We need to unmount before letting the tempdir cleanup run.
-        let success = Command::new(get_fusermount_path().unwrap().to_string())
+        let success = Command::new(get_fusermount_path().unwrap())
             .arg("-u")
             .arg(tempdir.path())
             .status()

rust/src/client.rs

@@ -177,7 +177,7 @@ pub(crate) fn client_start_daemon() -> CxxResult<()> {
     // invocations against the restart limit, so query the status
     // first.
     let activeres = Command::new("systemctl")
-        .args(&["is-active", "rpm-ostreed"])
+        .args(["is-active", "rpm-ostreed"])
         .output()?;
     // Explicitly don't check the error return value, we don't want to
     // hard fail on it.
@@ -188,11 +188,11 @@ pub(crate) fn client_start_daemon() -> CxxResult<()> {
         return Ok(());
     }
     let res = Command::new("systemctl")
-        .args(&["--no-ask-password", "start", service])
+        .args(["--no-ask-password", "start", service])
         .status()?;
     if !res.success() {
         let _ = Command::new("systemctl")
-            .args(&["--no-pager", "status", service])
+            .args(["--no-pager", "status", service])
             .status();
         return Err(anyhow!("{}", res).into());
     }

rust/src/cliwrap.rs

@@ -45,7 +45,7 @@ pub fn entrypoint(args: &[&str]) -> Result<()> {
     let args = &args[2..];
     // The outer code should always pass us at least one arg.
     let name = args
-        .get(0)
+        .first()
         .copied()
         .ok_or_else(|| anyhow!("Missing required argument"))?;
     // Handle this case early, it's not like the other cliwrap bits.
@@ -89,7 +89,7 @@ fn install_to_root(args: &[&str]) -> Result<()> {
         "cliwrap is deprecated; the replacement path is to get functionality into the relevant upstream projects.",
     );
     let root = args
-        .get(0)
+        .first()
         .map(Utf8Path::new)
         .ok_or_else(|| anyhow!("Missing required argument: ROOTDIR"))?;
     let rootdir = &Dir::open_ambient_dir(root, cap_std::ambient_authority())?;

rust/src/cliwrap/kernel_install.rs

@@ -14,7 +14,7 @@ pub(crate) fn main(argv: &[&str]) -> Result<()> {
     if !ostree_ext::container_utils::is_ostree_container()? {
         return cliutil::exec_real_binary("kernel-install", argv);
     }
-    let is_install = matches!(argv.get(0), Some(&"add"));
+    let is_install = matches!(argv.first(), Some(&"add"));
 
     let modules_path = Utf8Dir::open_ambient_dir("lib/modules", cap_std::ambient_authority())?;
     //kernel-install is called by kernel-core and kernel-modules cleanup let's make sure we just call dracut once.

rust/src/cliwrap/yumdnf.rs

@@ -157,7 +157,7 @@ impl RebaseCmd {
 }
 
 fn run_clean(argv: &Vec<String>) -> Result<RunDisposition> {
-    let arg = if let Some(subarg) = argv.get(0) {
+    let arg = if let Some(subarg) = argv.first() {
         subarg
     } else {
         anyhow::bail!("Missing required argument");

rust/src/compose.rs

@@ -31,9 +31,9 @@ impl Default for OutputFormat {
     }
 }
 
-impl Into<ostree_container::Transport> for OutputFormat {
-    fn into(self) -> ostree_container::Transport {
-        match self {
+impl From<OutputFormat> for ostree_container::Transport {
+    fn from(val: OutputFormat) -> Self {
+        match val {
             OutputFormat::Ociarchive => ostree_container::Transport::OciArchive,
             OutputFormat::Oci => ostree_container::Transport::OciDir,
             OutputFormat::Registry => ostree_container::Transport::Registry,
@@ -279,7 +279,7 @@ pub(crate) fn compose_image(args: Vec<String>) -> CxxResult<()> {
     }
 
     let s = self_command()
-        .args(&[
+        .args([
             "compose",
             "tree",
             "--unified-core",
@@ -292,8 +292,8 @@ pub(crate) fn compose_image(args: Vec<String>) -> CxxResult<()> {
             "--cachedir",
             treecachedir.as_str(),
         ])
-        .args(opt.force_nocache.then(|| "--force-nocache"))
-        .args(opt.offline.then(|| "--cache-only"))
+        .args(opt.force_nocache.then_some("--force-nocache"))
+        .args(opt.offline.then_some("--cache-only"))
         .args(compose_args_extra)
         .arg(opt.manifest.as_str())
         .status()?;
@@ -336,18 +336,15 @@ pub(crate) fn compose_image(args: Vec<String>) -> CxxResult<()> {
         .transpose()?;
 
     let s = self_command()
-        .args(&["compose", "container-encapsulate"])
+        .args(["compose", "container-encapsulate"])
         .args(label_args)
         .args(previous_arg)
         .args(opt.image_config.map(|v| format!("--image-config={v}")))
-        .args(&[
+        .args([
             "--repo",
             repo.as_str(),
             commitid.as_str(),
-            tempdest
-                .as_ref()
-                .map(|s| s.as_str())
-                .unwrap_or_else(|| target_imgref.as_str()),
+            tempdest.as_deref().unwrap_or(target_imgref.as_str()),
         ])
         .status()?;
     if !s.success() {

rust/src/composepost.rs

@@ -229,12 +229,7 @@ pub fn compose_prepare_rootfs(
     compose_init_rootfs_strict(
         target_rootfs_dfd,
         tmp_is_dir,
-        treefile
-            .parsed
-            .base
-            .opt_usrlocal
-            .clone()
-            .unwrap_or_default(),
+        treefile.parsed.base.opt_usrlocal.unwrap_or_default(),
     )?;
 
     println!("Moving /usr to target");
@@ -272,7 +267,7 @@ fn postprocess_useradd(rootfs_dfd: &cap_std::fs::Dir) -> Result<()> {
     let perms = cap_std::fs::Permissions::from_mode(0o644);
     if let Some(f) = rootfs_dfd.open_optional(path).context("opening")? {
         rootfs_dfd
-            .atomic_replace_with(&path, |bufw| -> Result<_> {
+            .atomic_replace_with(path, |bufw| -> Result<_> {
                 bufw.get_mut().as_file_mut().set_permissions(perms)?;
                 let f = BufReader::new(&f);
                 for line in f.lines() {
@@ -379,7 +374,7 @@ fn postprocess_rpm_macro(rootfs_dfd: &Dir) -> Result<()> {
     rootfs_dfd.create_dir_with(RPM_MACROS_DIR, &db)?;
     let rpm_macros_dfd = rootfs_dfd.open_dir(RPM_MACROS_DIR)?;
     let perms = cap_std::fs::Permissions::from_mode(0o644);
-    rpm_macros_dfd.atomic_replace_with(&MACRO_FILENAME, |w| -> Result<()> {
+    rpm_macros_dfd.atomic_replace_with(MACRO_FILENAME, |w| -> Result<()> {
         w.get_mut().as_file_mut().set_permissions(perms)?;
         w.write_all(b"%_dbpath /")?;
         w.write_all(RPMOSTREE_RPMDB_LOCATION.as_bytes())?;
@@ -398,7 +393,7 @@ fn postprocess_subs_dist(rootfs_dfd: &Dir) -> Result<()> {
     let path = Path::new("usr/etc/selinux/targeted/contexts/files/file_contexts.subs_dist");
     if let Some(f) = rootfs_dfd.open_optional(path)? {
         let perms = cap_std::fs::Permissions::from_mode(0o644);
-        rootfs_dfd.atomic_replace_with(&path, |w| -> Result<()> {
+        rootfs_dfd.atomic_replace_with(path, |w| -> Result<()> {
             w.get_mut().as_file_mut().set_permissions(perms)?;
             let f = BufReader::new(&f);
             for line in f.lines() {
@@ -753,7 +748,7 @@ fn compose_postprocess_mutate_os_release(
     // of resolving a symlink relative to a rootfs (see discussions in
     // https://github.com/projectatomic/rpm-ostree/pull/410/)
     let mut bwrap = crate::bwrap::Bubblewrap::new_with_mutability(
-        &rootfs,
+        rootfs,
         crate::ffi::BubblewrapMutability::Immutable,
     )?;
     bwrap.append_child_argv(["realpath", "/etc/os-release"]);
@@ -1113,7 +1108,7 @@ pub fn rootfs_prepare_links(
             .with_context(|| format!("Moving /{} to /{}", &varlib_path, &usrlib_path))?;
 
         let target = format!("../../{}", &usrlib_path);
-        ensure_symlink(&rootfs, &target, &varlib_path)
+        ensure_symlink(rootfs, &target, &varlib_path)
             .with_context(|| format!("Creating /{} symlink", &varlib_path))?;
     }
 
@@ -1255,12 +1250,12 @@ pub fn directory_size(dfd: i32, cancellable: &crate::FFIGCancellable) -> CxxResu
                 let child = d.open_dir(ent.file_name())?;
                 r += directory_size_recurse(&child, cancellable)?;
             } else if meta.is_file() {
-                r += meta.size() as u64;
+                r += meta.size();
             }
         }
         Ok(r)
     }
-    Ok(directory_size_recurse(&dfd, &cancellable)?)
+    Ok(directory_size_recurse(dfd, &cancellable)?)
 }
 
 #[context("Hardlinking rpmdb to base location")]
@@ -1308,7 +1303,7 @@ fn rewrite_rpmdb_for_target_inner(rootfs_dfd: &Dir, normalize: bool) -> Result<(
     let dbpath_arg = format!("--dbpath=/proc/self/cwd/{}", RPMOSTREE_RPMDB_LOCATION);
     // Fork rpmdb from the *host* rootfs to read the rpmdb back into memory
     let r = std::process::Command::new("rpmdb")
-        .args(&[dbpath_arg.as_str(), "--exportdb"])
+        .args([dbpath_arg.as_str(), "--exportdb"])
         .current_dir(format!("/proc/self/fd/{}", rootfs_dfd.as_raw_fd()))
         .stdout(Stdio::from(dbfd.try_clone()?))
         .status()?;
@@ -1331,7 +1326,7 @@ fn rewrite_rpmdb_for_target_inner(rootfs_dfd: &Dir, normalize: bool) -> Result<(
     }
 
     // Fork the target rpmdb to write the content from memory to disk
-    let mut bwrap = Bubblewrap::new_with_mutability(&rootfs_dfd, BubblewrapMutability::RoFiles)?;
+    let mut bwrap = Bubblewrap::new_with_mutability(rootfs_dfd, BubblewrapMutability::RoFiles)?;
     bwrap.append_child_argv(["rpmdb", dbpath_arg.as_str(), "--importdb"]);
     bwrap.take_stdin_fd(dbfd.into_raw_fd());
     let cancellable = gio::Cancellable::new();
@@ -1342,7 +1337,7 @@ fn rewrite_rpmdb_for_target_inner(rootfs_dfd: &Dir, normalize: bool) -> Result<(
     // Sometimes we can end up with build-to-build variance in the underlying rpmdb
     // files. Attempt to sort that out, if requested.
     if normalize {
-        normalization::normalize_rpmdb(&rootfs_dfd, RPMOSTREE_RPMDB_LOCATION)?;
+        normalization::normalize_rpmdb(rootfs_dfd, RPMOSTREE_RPMDB_LOCATION)?;
     }
 
     tempetc.undo()?;

rust/src/console_progress.rs

@@ -197,7 +197,7 @@ pub(crate) fn console_progress_begin_task(msg: &str) {
 pub(crate) fn console_progress_begin_n_items(msg: &str, n: u64) {
     let mut lock = PROGRESS.lock().unwrap();
     assert_empty(&lock, msg);
-    *lock = Some(ProgressState::new(msg, ProgressType::NItems(n as u64)));
+    *lock = Some(ProgressState::new(msg, ProgressType::NItems(n)));
 }
 
 pub(crate) fn console_progress_begin_percent(msg: &str) {