Commits
Eric Biggers committed 2b6ff0224cb
ANDROID: sdcardfs: evict dentries on fscrypt key removal
Use the fscrypt key removal notifier chain to make sdcardfs evict its
dentries when an fscrypt key is about to be removed. This is needed for
the FS_IOC_REMOVE_ENCRYPTION_KEY ioctl to properly "lock" the encrypted
files underneath sdcardfs when an Android user is stopped.
Test: pm create-user 10
am start-user 10
find /data/media/10/ # filenames are in plaintext form
am stop-user 10
find /data/media/10/ # filenames are in ciphertext form
(But currently the kernel and vold still warn about other files
still being open, due to b/140762419)
Bug: 120446149
Bug: 142275883
Change-Id: I83b451a2bc40c72fcd01d24aa5c34ad8de427534
Signed-off-by: Eric Biggers <ebiggers@google.com>