From 5980c113fec9635a26ab8b19c9e682f7e28c89d8 Mon Sep 17 00:00:00 2001
From: weishu <twsxtd@gmail.com>
Date: Sun, 4 Jun 2023 00:03:49 +0800
Subject: [PATCH] kernel: respect the app profile's umount modules field for
 kernel umounting

---
 kernel/core_hook.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/kernel/core_hook.c b/kernel/core_hook.c
index c48e2d2f..c1d00afd 100644
--- a/kernel/core_hook.c
+++ b/kernel/core_hook.c
@@ -417,7 +417,12 @@ static bool should_umount(struct path *path)
 
 	if (path->mnt && path->mnt->mnt_sb && path->mnt->mnt_sb->s_type) {
 		const char *fstype = path->mnt->mnt_sb->s_type->name;
-		return strcmp(fstype, "overlay") == 0;
+		if (strcmp(fstype, "overlay") == 0) {
+			return ksu_is_uid_should_umount(current_uid().val);
+		}
+#ifdef CONFIG_KSU_DEBUG
+		pr_info("uid: %d should not umount!\n")
+#endif
 	}
 	return false;
 }