feat(import): Add support for setting permissions

Author: Holzhaus

src/cli/import.rs

@@ -232,6 +232,11 @@ pub async fn run(config: &Config, cache: Option<&Cache>, args: Args) -> crate::R
             if let Err(err) = track_collection.write_tags() {
                 log::error!("Failed to write tags: {err}");
             }
+
+            #[cfg(unix)]
+            if let Err(err) = track_collection.set_permissions(&cloned_config) {
+                log::error!("Failed to set permissions: {err}");
+            }
         }
     });
 

src/config.rs

@@ -379,6 +379,20 @@ pub struct PathTemplateConfig {
     pub compilation_format: String,
 }
 
+/// The import configuration struct.
+#[cfg(unix)]
+#[expect(missing_copy_implementations)]
+#[expect(clippy::struct_field_names)]
+#[derive(Debug, Default, Clone, Deserialize, Serialize)]
+pub struct ImportConfig {
+    /// User ID to set.
+    pub set_uid: Option<u32>,
+    /// Group ID to set.
+    pub set_gid: Option<u32>,
+    /// File mode to set.
+    pub set_mode: Option<u32>,
+}
+
 /// The main configuration struct.
 #[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct Config {
@@ -392,6 +406,10 @@ pub struct Config {
     pub weights: DistanceWeights,
     /// UI configuration.
     pub user_interface: UiConfig,
+    /// Import configuration.
+    #[cfg(unix)]
+    #[serde(default)]
+    pub import: ImportConfig,
 }
 
 impl Default for Config {

src/taggedfilecollection.rs

@@ -294,6 +294,29 @@ impl TaggedFileCollection {
 
         Ok(())
     }
+
+    /// Set permission for all tracks in this collection.
+    ///
+    /// # Errors
+    ///
+    /// Returns an error if any of the underlying file system operations fail.
+    #[cfg(unix)]
+    pub fn set_permissions(&mut self, config: &Config) -> crate::Result<()> {
+        for track in &mut self
+            .media
+            .iter_mut()
+            .flat_map(|media| media.tracks.iter_mut())
+        {
+            util::set_file_permissions(
+                &track.path,
+                config.import.set_uid,
+                config.import.set_gid,
+                config.import.set_mode,
+            )?;
+        }
+
+        Ok(())
+    }
 }
 
 impl IntoIterator for TaggedFileCollection {

src/util/fs.rs

@@ -12,11 +12,11 @@ use std::collections::BinaryHeap;
 use std::ffi::OsStr;
 use std::fs;
 use std::io;
+use std::os::unix::{self, fs::PermissionsExt};
 use std::path::{Path, PathBuf};
 
 /// An iterator that recursively walks through a directory structure and yields a tuple `(path,
 /// dirs, files)` for each directory it visits.
-///
 /// This struct is created by [`walk_dir`]. See its documentation for more.
 pub struct DirWalk {
     /// Queued paths that will be visited next.
@@ -117,3 +117,52 @@ pub fn move_file<S: AsRef<Path>, D: AsRef<Path>>(source: S, destination: D) -> c
 
     Ok(())
 }
+
+///  Set file owner.
+#[cfg(unix)]
+pub fn set_file_permissions<S: AsRef<Path>>(
+    source: S,
+    uid: Option<u32>,
+    gid: Option<u32>,
+    mode: Option<u32>,
+) -> crate::Result<()> {
+    unix::fs::chown(&source, uid, gid)?;
+    match (uid, gid) {
+        (Some(owner), Some(group)) => {
+            log::info!(
+                "Changed owner/group for {} to {owner}:{group}.",
+                source.as_ref().display()
+            );
+        }
+        (Some(owner), None) => {
+            log::info!(
+                "Changed owner for {} to {owner}.",
+                source.as_ref().display()
+            );
+        }
+        (None, Some(group)) => {
+            log::info!(
+                "Changed group for {} to {group}.",
+                source.as_ref().display()
+            );
+        }
+        _ => (),
+    }
+
+    if let Some(new_mode) = mode {
+        let file = fs::File::open(&source)?;
+        let permissions = file.metadata()?.permissions();
+        let old_mode = permissions.mode();
+
+        if permissions.mode() != new_mode {
+            let permissions = fs::Permissions::from_mode(new_mode);
+            file.set_permissions(permissions)?;
+            log::info!(
+                "Permission for {} changed from {old_mode:o} to {new_mode:o}.",
+                source.as_ref().display()
+            );
+        }
+    }
+
+    Ok(())
+}

src/util/mod.rs

@@ -14,6 +14,8 @@ mod keyed_binheap;
 mod testing;
 mod time;
 
+#[cfg(unix)]
+pub use fs::set_file_permissions;
 pub use fs::{move_file, walk_dir};
 pub use keyed_binheap::KeyedBinaryHeap;
 #[cfg(any(test, feature = "dev"))]