fix(mknod): add feat_smack cfg alias

Author: xtqqczze

Cargo.lock

@@ -19,6 +19,9 @@ workspace = true
 name = "uu_mknod"
 path = "src/mknod.rs"
 
+[build-dependencies]
+cfg_aliases.workspace = true
+
 [dependencies]
 clap = { workspace = true }
 uucore = { workspace = true, features = ["mode", "fs"] }

src/uu/mknod/Cargo.toml

@@ -0,0 +1,12 @@
+// This file is part of the uutils coreutils package.
+//
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
+use cfg_aliases::cfg_aliases;
+
+pub fn main() {
+    cfg_aliases! {
+        smack: { all(feature = "feat_smack", target_os = "linux") },
+    }
+}

src/uu/mknod/build.rs

@@ -57,11 +57,11 @@ struct Config {
     dev: u64,
 
     /// Set security context (SELinux/SMACK).
-    #[cfg(any(feature = "selinux", feature = "smack"))]
+    #[cfg(any(feature = "selinux", smack))]
     set_security_context: bool,
 
     /// Specific security context (SELinux/SMACK).
-    #[cfg(any(feature = "selinux", feature = "smack"))]
+    #[cfg(any(feature = "selinux", smack))]
     context: Option<String>,
 }
 
@@ -110,7 +110,7 @@ fn mknod(file_name: &str, config: Config) -> i32 {
     }
 
     // Apply SMACK context if requested
-    #[cfg(feature = "smack")]
+    #[cfg(smack)]
     if config.set_security_context {
         if let Err(e) =
             uucore::smack::set_smack_label_and_cleanup(file_name, config.context.as_ref(), |p| {
@@ -146,9 +146,9 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
         .expect("Missing argument 'NAME'");
 
     // Extract the security context related flags and options
-    #[cfg(any(feature = "selinux", feature = "smack"))]
+    #[cfg(any(feature = "selinux", smack))]
     let set_security_context = matches.get_flag(options::SECURITY_CONTEXT);
-    #[cfg(any(feature = "selinux", feature = "smack"))]
+    #[cfg(any(feature = "selinux", smack))]
     let context = matches.get_one::<String>(options::CONTEXT).cloned();
 
     let dev = match (
@@ -177,9 +177,9 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
         file_type: file_type.clone(),
         use_umask,
         dev,
-        #[cfg(any(feature = "selinux", feature = "smack"))]
+        #[cfg(any(feature = "selinux", smack))]
         set_security_context: set_security_context || context.is_some(),
-        #[cfg(any(feature = "selinux", feature = "smack"))]
+        #[cfg(any(feature = "selinux", smack))]
         context,
     };