From 80c41f2fd5dd0c2c803c6965b75a9c138fb83470 Mon Sep 17 00:00:00 2001
From: Wang Han <416810799@qq.com>
Date: Fri, 21 Feb 2025 11:09:02 +0800
Subject: [PATCH] Provide TMPDIR for boot image repacking (#2458)

/data/local/tmp is never writable for normal apps, why previously it
works is that Rust's temp_dir() gets path from env, and since A13,
TMPDIR is set to app's cache dir. This is not the case for A12, so it
breaks. Fix it by set TMPDIR ourselves.
---
 .../src/main/java/me/weishu/kernelsu/KernelSUApplication.kt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/manager/app/src/main/java/me/weishu/kernelsu/KernelSUApplication.kt b/manager/app/src/main/java/me/weishu/kernelsu/KernelSUApplication.kt
index 0503b42f0f43..3b07b99cb0cf 100644
--- a/manager/app/src/main/java/me/weishu/kernelsu/KernelSUApplication.kt
+++ b/manager/app/src/main/java/me/weishu/kernelsu/KernelSUApplication.kt
@@ -1,6 +1,7 @@
 package me.weishu.kernelsu
 
 import android.app.Application
+import android.system.Os
 import coil.Coil
 import coil.ImageLoader
 import me.zhanghai.android.appiconloader.coil.AppIconFetcher
@@ -30,7 +31,10 @@ class KernelSUApplication : Application() {
         if (!webroot.exists()) {
             webroot.mkdir()
         }
+
+        // Provide working env for rust's temp_dir()
+        Os.setenv("TMPDIR", cacheDir.absolutePath, true)
     }
 
 
-}
\ No newline at end of file
+}