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https://github.com/Divested-Mobile/DivestOS-Build.git
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37 lines
2.1 KiB
Diff
37 lines
2.1 KiB
Diff
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Bin Wang <bin.wang@oppo.corp-partner.google.com>
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Date: Thu, 23 Jun 2022 16:00:24 +0800
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Subject: [PATCH] Modify conditions for preventing updated system apps from
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being downgraded
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Add two conditions prior to deciding whether a specific user can downgrade system apps by deletePackageX.
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1.uninstalledPs must be a updated system app.
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2.deleteFlags does not contains PackageManager.DELETE_SYSTEM_APP, since flag PackageManager.DELETE_SYSTEM_APP
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will just mark the app as uninstalled for the specific user instead of uninstalling the update and rolling back
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to the older system version.
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Test: Update a system app and create some multi users; Then use command "pm uninstall --user ${userId} ${packageName}"
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to uninstall the system app for a specific user; The result is that the system app is marked as uninstalled for
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this specific user successfully
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Signed-off-by: Bin Wang <bin.wang@oppo.corp-partner.google.com>
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Change-Id: I2c6c8c4ad1b41995c4d7d0153a036edcfae03687
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---
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.../core/java/com/android/server/pm/PackageManagerService.java | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
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index 9265358b8b37..e109337809cf 100644
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--- a/services/core/java/com/android/server/pm/PackageManagerService.java
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+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
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@@ -16059,7 +16059,8 @@ public class PackageManagerService extends IPackageManager.Stub {
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Slog.w(TAG, "Not removing non-existent package " + packageName);
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return PackageManager.DELETE_FAILED_INTERNAL_ERROR;
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}
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- if (isSystemApp(uninstalledPs)) {
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+ if (isUpdatedSystemApp(uninstalledPs)
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+ && ((deleteFlags & PackageManager.DELETE_SYSTEM_APP) == 0)) {
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UserInfo userInfo = sUserManager.getUserInfo(userId);
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if (userInfo == null || !userInfo.isAdmin()) {
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Slog.w(TAG, "Not removing package " + packageName
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