aconfig: add fixed read only flag

Add a new field in the declaration to indicate whether
the permission can be overridden.

When the field “is_fixed_read_only” is set to true,
the flag permission will be set as fixed “READ_ONLY”,
and the permission should not be changed by Gantry.

Bug: 292521627
Test: atest aconfig.test
Change-Id: Ic9bcd7823bccb8b947cf05568c7ced3763490a23

tools/aconfig/src/codegen_rust.rs

@@ -108,6 +108,11 @@ impl FlagProvider {
             "false") == "true"
     }
 
+    /// query flag enabled_fixed_ro
+    pub fn enabled_fixed_ro(&self) -> bool {
+        true
+    }
+
     /// query flag enabled_ro
     pub fn enabled_ro(&self) -> bool {
         true
@@ -137,6 +142,12 @@ pub fn disabled_rw() -> bool {
     PROVIDER.disabled_rw()
 }
 
+/// query flag enabled_fixed_ro
+#[inline(always)]
+pub fn enabled_fixed_ro() -> bool {
+    true
+}
+
 /// query flag enabled_ro
 #[inline(always)]
 pub fn enabled_ro() -> bool {
@@ -189,6 +200,18 @@ impl FlagProvider {
         self.overrides.insert("disabled_rw", val);
     }
 
+    /// query flag enabled_fixed_ro
+    pub fn enabled_fixed_ro(&self) -> bool {
+        self.overrides.get("enabled_fixed_ro").copied().unwrap_or(
+            true
+        )
+    }
+
+    /// set flag enabled_fixed_ro
+    pub fn set_enabled_fixed_ro(&mut self, val: bool) {
+        self.overrides.insert("enabled_fixed_ro", val);
+    }
+
     /// query flag enabled_ro
     pub fn enabled_ro(&self) -> bool {
         self.overrides.get("enabled_ro").copied().unwrap_or(
@@ -251,6 +274,18 @@ pub fn set_disabled_rw(val: bool) {
     PROVIDER.lock().unwrap().set_disabled_rw(val);
 }
 
+/// query flag enabled_fixed_ro
+#[inline(always)]
+pub fn enabled_fixed_ro() -> bool {
+    PROVIDER.lock().unwrap().enabled_fixed_ro()
+}
+
+/// set flag enabled_fixed_ro
+#[inline(always)]
+pub fn set_enabled_fixed_ro(val: bool) {
+    PROVIDER.lock().unwrap().set_enabled_fixed_ro(val);
+}
+
 /// query flag enabled_ro
 #[inline(always)]
 pub fn enabled_ro() -> bool {