tequilaOS/platform_system_vold
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

allow encrypted filesystems to be mounted readonly

Browse source 
By setting ro.crypto.readonly to 1, cryptfs will mount an encrypted
filesystem that is normally mounted read-write as read-only instead.
To be used when recovery mounts /data.

Bug: 12188746
Change-Id: If3f3f9a3024f29ebc4ad721a48546a332cb92b6b
This commit is contained in:
Doug Zongker 2013-12-17 09:43:23 -08:00
parent dbf5b6652c
commit 6fd5771337
1 changed files with 11 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
cryptfs.c
View file

@ -1125,6 +1125,17 @@ int cryptfs_restart(void)
}
if (! (rc = wait_and_unmount(DATA_MNT_POINT)) ) {
/* If ro.crypto.readonly is set to 1, mount the decrypted
* filesystem readonly. This is used when /data is mounted by
* recovery mode.
*/
char ro_prop[PROPERTY_VALUE_MAX];
property_get("ro.crypto.readonly", ro_prop, "");
if (strlen(ro_prop) > 0 && atoi(ro_prop)) {
struct fstab_rec* rec = fs_mgr_get_entry_for_mount_point(fstab, DATA_MNT_POINT);
rec->flags |= MS_RDONLY;
}
/* If that succeeded, then mount the decrypted filesystem */
fs_mgr_do_mount(fstab, DATA_MNT_POINT, crypto_blkdev, 0);