more progress. removed the unions because they have a bigger size than the foreign procs expects and that messes things up

permission_manager.odin

@@ -0,0 +1,68 @@
+//+build android
+package android
+
+foreign import android "system:android"
+
+// TODO: move to libc or something
+pid_t :: i32
+
+/**
+ * Permission check results.
+ *
+ * Introduced in API 31.
+ */
+PermissionManagerResult :: enum i32 {
+    /**
+     * This is returned by APermissionManager_checkPermission()
+     * if the permission has been granted to the given package.
+     */
+    PERMISSION_GRANTED = 0,
+    /**
+     * This is returned by APermissionManager_checkPermission()
+     * if the permission has not been granted to the given package.
+     */
+    PERMISSION_DENIED = -1,
+}
+
+/**
+ * Permission check return status values.
+ *
+ * Introduced in API 31.
+*/
+PermissionManagerStatus :: enum i32 {
+    /**
+     * This is returned if the permission check completed without errors.
+     * The output result is valid and contains one of {::PERMISSION_MANAGER_PERMISSION_GRANTED,
+     * ::PERMISSION_MANAGER_PERMISSION_DENIED}.
+     */
+    OK = 0,
+    /**
+     * This is returned if the permission check encountered an unspecified error.
+     * The output result is unmodified.
+     */
+    ERROR_UNKNOWN = -1,
+    /**
+     * This is returned if the permission check failed because the service is
+     * unavailable. The output result is unmodified.
+     */
+    SERVICE_UNAVAILABLE = -2,
+}
+
+foreign android {
+	/**
+	 * Checks whether the package with the given pid/uid has been granted a permission.
+	 *
+	 * Note that the Java API of Context#checkPermission() is usually faster due to caching,
+	 * thus is preferred over this API wherever possible.
+	 *
+	 * Available since API level 31
+	 *
+	 * @param permission the permission to be checked.
+	 * @param pid the process id of the package to be checked.
+	 * @param uid the uid of the package to be checked.
+	 * @param outResult output of the permission check result.
+	 *
+	 * @return error codes if any error happened during the check.
+	 */
+	 APermissionManager_checkPermission :: proc(permission: cstring, pid: pid_t, uid: uid_t, outResult: ^PermissionManagerResult) -> PermissionManagerStatus ---
+}