From 30cc50aa7004ea0a1b055bead3a1208dd0f7f89c Mon Sep 17 00:00:00 2001
From: pjh456 <147148383@qq.com>
Date: Sat, 26 Sep 2026 11:42:45 +0000
Subject: [PATCH] =?UTF-8?q?feat:=20OXIDE=5FLOG=5FFILE=20=E7=8E=AF=E5=A2=83?=
 =?UTF-8?q?=E5=8F=98=E9=87=8F=E5=90=AF=E7=94=A8=E6=8C=89=E6=97=A5=E6=BB=9A?=
 =?UTF-8?q?=E5=8A=A8=E6=97=A5=E5=BF=97=E6=96=87=E4=BB=B6=E8=BE=93=E5=87=BA?=
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---
 crates/oxide_kernel/src/kernel/core.rs | 8 +++++++-
 crates/oxide_test262/src/main.rs       | 7 ++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/crates/oxide_kernel/src/kernel/core.rs b/crates/oxide_kernel/src/kernel/core.rs
index 8aa0c7cb..9ee05d02 100644
--- a/crates/oxide_kernel/src/kernel/core.rs
+++ b/crates/oxide_kernel/src/kernel/core.rs
@@ -3,6 +3,7 @@
 //! 重建信号。
 
 use std::num::NonZeroUsize;
+use std::path::PathBuf;
 use std::sync::atomic::{AtomicUsize, Ordering};
 use std::sync::Arc;
 
@@ -34,8 +35,13 @@ pub struct KernelCore {
 impl KernelCore {
     /// 按配置创建共享核心：初始化日志系统与四个共享 forge（interner/shape/code/prop）。
     pub fn new(config: KernelConfig) -> Arc<Self> {
+        // OXIDE_LOG_FILE 指向目录时日志按日滚动落盘该目录（同镜像 stderr），缺省仅 stderr。
+        let output = match std::env::var("OXIDE_LOG_FILE") {
+            Ok(dir) if !dir.is_empty() => oxide_log::Output::File(PathBuf::from(dir)),
+            _ => oxide_log::Output::Stderr,
+        };
         oxide_log::init(&oxide_log::LogConfig {
-            output: oxide_log::Output::Stderr,
+            output,
             levels: config.log_levels,
         });
         let perm_interner = Arc::new(PermInterner::new());
diff --git a/crates/oxide_test262/src/main.rs b/crates/oxide_test262/src/main.rs
index 21e0e4d6..e51ec9bc 100644
--- a/crates/oxide_test262/src/main.rs
+++ b/crates/oxide_test262/src/main.rs
@@ -95,8 +95,13 @@ fn run_tests() -> bool {
         }
     }
     eprintln!("[LOG] level={log_level:?}");
+    // OXIDE_LOG_FILE 指向目录时日志按日滚动落盘该目录（同镜像 stderr），缺省仅 stderr。
+    let output = match std::env::var("OXIDE_LOG_FILE") {
+        Ok(dir) if !dir.is_empty() => Output::File(PathBuf::from(dir)),
+        _ => Output::Stderr,
+    };
     oxide_log::init(&LogConfig {
-        output: Output::Stderr,
+        output,
         levels: [log_level; SUBSYSTEM_COUNT],
     });