Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2012319

Change-Id: Id017ed15bebae47f39863dca80dc630d18e3a39a

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2012319

Change-Id: I37b382650d6d767fe17217e8888abc197547d5ce

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2012319

Change-Id: I192f9b34e9065c16ce3a28d17bcf3a2e054c323f

* changes:
  fd_server: use RwLock instead of Mutex
  authfs: use RwLock instead of Mutex
  Only read backing file if chunk index is in range

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2010815

Change-Id: I3ef4e2c2a943119ee3eceb87fb8f230c6f416b38

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2010815

Change-Id: I4fc3a40418667eea884ca7bbdbc641f15ebc96cf

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2010815

Change-Id: I3311fe96614349c45e60a2a051b0c25ef57e26ca

`nix::dir::Dir` isn't Sync (required by `RwLock`), so I had to replace
it with `OwnedFd`.

Bug: 220386264
Test: atest AuthFsHostTest
Test: performance change before vs after is hard to tell
Change-Id: Ib3fd9047970a856b532234f0bebad652172e12de

Bug: 220386264
Test: Observed faster parallel file reads (at least not much slower,
      possibly due to lock contention), with prototype of multithread
      support.
Change-Id: I3126932f9b3c769756ec1123e4746d3d1de88a1e

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2008219

Change-Id: I8b4e7baf1475386ac92bf49efd10fe052265722a

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2008219

Change-Id: Iafe50bb1e6bf70940fcddb4e8fcd94626913fbbc

If the chunk index is out of range (which can be a valid read request),
simply return 0. Previously, we had to deal with fd_server when it
returned an unexpected result. Now we don't need to handle it (the
inconsistant state may still be on Android, but we don't care here).

Bug: 221847239
Test: atest AuthFsHostTest
Change-Id: I3450f496de58f2933fb3818b42e9510c56875061

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2008219

Change-Id: Ia94cbe02a133fbbfb0ecbb5a51759fc3568b5f0b

* changes:
  Fix test action that tampered file at wrong offset
  Verify the last incomplete chunk on resize
  Verify read_chunk for writable file

The implementation in writeZerosAtFileOffsetOnMicrodroid specifies the
offset of the output file by "skip" of "dd". But actually, "skip" is for
"if=", while "seek" is for "of=". The test expectation did not fail
coincidentally.

Bug: N/A
Test: testWriteFailedIfDetectsTampering
Change-Id: I89c9c96d250f4374e51a01c986aa1289b24ac236

Bug: 221847239
Test: AuthFsHostTest
Change-Id: I9c7b68d51faac3e34053d6fbf5d3eeb9f702c7e8

A new test case is added. Besides, fix a side effect in
testWriteThroughCorrectly that truncates the backing by mistake (though
doesn't affect the purpose of the case).

Bug: 221847239
Test: atest AuthFsHostTest
Change-Id: I6b3f2b0c964c42b6bace94ff04b4f5edbc2d9efd

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2010756

Change-Id: I3aa8e397691834449a78fab0a3f29912b177dd08

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2010756

Change-Id: I03a720e0fc08aedb4764f9326d6d6864fabde99c

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2010756

Change-Id: I71f28092ffff46b1d84a4f1d8bfe74f117a48ac2

Check the properties instead (capability not implementation).

Bug: 218276733
Test: atest VirtualizationTestCases.64
Change-Id: Ifa5d463effb09b30d0166c0bfde13da86978d90c

We should use the system properties instead (check for capability not
implementation). And we should use the new utilities to do so.

Bug: 218276733
Test: m ComposHostTestCases AuthFsHostTest MicrodroidHostTestCases
Test: atest ComposHostTestCases
Change-Id: I5db819dd874487310a40cb6736f873d3b6273ecd

Merge "Pass serial device to VM to report failure reason." am: 83b12765 am: 0f402626 am: 7e50cea9

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/1997007

Change-Id: Idcd08ce25d4984bb0a0d3d29310d5de7774323ac

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/1997007

Change-Id: I4ab8af55d81382d22c5d3263fd603b5129b714a9

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/1997007

Change-Id: I71ee955ec8531a2611114393b9ed70d0a3ae0fa0

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2005291

Change-Id: I0036547dbcb94032cc73b0b4e1a6c8cd5121fb68

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2005291

Change-Id: I4e0be884ab6963318a7bba11c5ebe9d6194e038b

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2005291

Change-Id: I2aab9593755758f51655c31dbb31d4af5da4058c

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/1998181

Change-Id: I97925821eaae9f99cc2a4ba7611a304e6f67edf9

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2000670

Change-Id: I063f863974b89c404ecc294718844499f8b61771

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/1998180

Change-Id: I1ea015d903d15b8ae5c76a9af990192c57bfebc6

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/1998181

Change-Id: I2d81c0b4b86df893f30c5304374b93d01334a788

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2000670

Change-Id: I5e732b745cea6f5c2d1c15fc4db9d031d0b093aa

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/1998180

Change-Id: I439b17bf285519966d22e0051e85678c7195cf83

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/1998181

Change-Id: I6fcbfb0454ec051cafdbad0b442e31b037161185

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2000670

Change-Id: I5f100c5d3a3f8cca9b58eebbf2f480b6855cacf1

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/1998180

Change-Id: Ibd7761dee7992637619b8d06083f435fe85fbb21