commit 621d9b9732f929f25df5a7b4f2199bf762dd44dd
author Paul Crowley <paulcrowley@google.com> Fri Dec 07 15:36:09 2018 -0800
committer Paul Crowley <paulcrowley@google.com> Mon Jan 07 04:30:08 2019 -0800
tree 775deb171d9efe01e0983059f8df15090577001c
parent 2374693556fdc6eab6e701f478f502441274e109

Fsync directories after creating files

Bug: 120248692
Test: adb shell locksettings set-pin 1111 && \
    adb shell "echo b > /proc/sysrq-trigger"
Change-Id: I53d252942c21365983b4f8b6e0948b1864f195c1

KeyStorage.cpp

diff --git a/KeyStorage.cpp b/KeyStorage.cpp
index 9dd4991..fc700c5 100644
--- a/KeyStorage.cpp
+++ b/KeyStorage.cpp
@@ -484,6 +484,7 @@
         if (!encryptWithoutKeymaster(appId, key, &encryptedKey)) return false;
     }
     if (!writeStringToFile(encryptedKey, dir + "/" + kFn_encrypted_key)) return false;
+    if (!FsyncDirectory(dir)) return false;
     return true;
 }