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Add sdcard FUSE daemon flag to specify the GID required for a package
to have write access.  Normally sdcard_rw, but it will be media_rw
for secondary external storage devices, so DefaultContainerService
can still clean up package directories after uninstall.

Create /mnt/media_rw which is where vold will mount raw secondary
external storage devices before wrapping them in a FUSE instance.

Bug: 10330128, 10330229
Change-Id: I4385c36fd9035cdf56892aaf7b36ef4b81f4418a

Bug: 10912373
Change-Id: If8a2f9829b3aac4abc33a4623c5f5b4966fd6870

Make sure fstab is not NULL before freeing it

Bug: 10911605
Change-Id: I549c0a470dd183fb15a2f3c5cf4f3dd393b6e307

The kernel problem has been fixed long time ago and the ad-hoc logging
mechanism is not thread safe and can flood the log with spurious
messages.

BUG: 10899829
Change-Id: I63278db51295e744eed3e47dc8d4cfe621c0d8f7

Change-Id: If8c80003bc2f042c67ffdf38469407de3c2fda2c

Change-Id: I63e21b90e5b8a8f016dd04ceca4354793faa5e37

The log_target parameter of android_fork_execvp_ext() is now a
bit field, and multiple targets can be set to log to multiple
places at the same time.

The new target LOG_FILE will log to a file specified by the new
parameter file_path.

Set LOG_FILE and log to a file in /dev (the only writable filesystem
avilable when e2fsck runs) when invoking e2fsck in fs_mgr.

Bug: 10021342

Change-Id: I63baf644cc8c3afccc8345df27a74203b44d0400

Bug: 10330128

Change-Id: I41fb178b839487b604762fbc1ccba097d25c7aa0

Change-Id: I0eb029395a3afd2f93a7632d7d3d20d28c2ab189

Before this change, FUSE lookup() would have the side effect of
creating the directory on behalf of apps.  This resulted in most
directories being created just by Settings trying to measure disk
space.  Instead, we're switching to have vold do directory creation
when an app doesn't have enough permissions.

Create fs_mkdirs() utility to create all parent directories in a
path as needed.  Allow traversal (+x) into /storage directories.

Fix FUSE derived permissions to be case insensitive.  Mark well-known
directories as .nomedia when created.

Bug: 10577808, 10330221
Change-Id: I53114f2e63ffbe6de4ba6a72d94a232523231cad

Bug: 10624956
Change-Id: Ie1d7c8ac16b5a5ec1e63e4fb1863f5b1ab2b59e8

It's a security best practice to carry entropy across reboots.
(see "man 4 random"). Currently, entropy saving and mixing occur
in the system_server, via the EntropyMixer code. Unfortunately, the
EntropyMixer code runs fairly late in the boot process, which means
early boot doesn't have high quality entropy. This has caused security
problems in the past.

Load entropy data as soon as we can in the early boot process, so that
we can get /dev/random / /dev/urandom into a "random" state earlier.

Bug: 9983133
Change-Id: Id4a6f39e9060f30fe7497bd8f8085a9bec851e80

Bug: 10804238
Change-Id: I093945789d9c6d373392fc9dfd18ec2c6058d3b9

Don't follow symlinks when writing to a file.
Don't create world-writable files.

Bug: 10802869
Change-Id: Ifb55600d574307a535df878acb3347e02028cd30

Don't allow unexpected characters in property names.
Don't allow double dots in property names.

Bug: 10733330
Change-Id: I8d69740d697efb791f2f201f90989576e13bac81