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android / platform / system / vold / 6f5802e
commit6f5802e16022f2921162d54c1a6fafb8bcfc1c82[log] [tgz]
authorMartijn Coenen <maco@google.com>Thu Nov 28 11:53:53 2019 +0100
committerMartijn Coenen <maco@google.com>Tue Dec 10 16:49:16 2019 +0100
tree4031f8272393958a75d8cb14548905afca86d71c
parent9072cef15269c56fde0ae4c6c439c39dfb594e98 [diff]
Use sdcardfs for pass-through mounts.

The pass-through mount is used by MediaProvider to access external
storage. Previously, it was the raw filesystem (eg ext4/f2fs); the
problem with that is that the permissions on that filesystem don't allow
MediaProvider to access all the files it needs to - in particular
directories under Android/

To solve this problem, we can have the pass-through mount sit on top of
sdcardfs instead of the raw filesystem. This means we need to mount
sdcardfs even in case we're using FUSE, but we already needed to do this
anyway for other performance reasons.

Bug: 135341433
Test: atest AdoptableHostTest
Change-Id: I893d5e5076c5096d2d55212f643c9a857242e964
6 files changed
tree: 4031f8272393958a75d8cb14548905afca86d71c
  1. bench/
  2. binder/
  3. fs/
  4. model/
  5. tests/
  6. .clang-format ⇨ ../../build/soong/scripts/system-clang-format
  7. Android.bp
  8. AppFuseUtil.cpp
  9. AppFuseUtil.h
  10. Benchmark.cpp
  11. Benchmark.h
  12. BenchmarkGen.h
  13. CheckEncryption.cpp
  14. CheckEncryption.h
  15. Checkpoint.cpp
  16. Checkpoint.h
  17. CleanSpec.mk
  18. cryptfs.cpp
  19. cryptfs.h
  20. Devmapper.cpp
  21. Devmapper.h
  22. EncryptInplace.cpp
  23. EncryptInplace.h
  24. FileDeviceUtils.cpp
  25. FileDeviceUtils.h
  26. FsCrypt.cpp
  27. FsCrypt.h
  28. fscrypt_uapi.h
  29. IdleMaint.cpp
  30. IdleMaint.h
  31. KeyBuffer.cpp
  32. KeyBuffer.h
  33. Keymaster.cpp
  34. Keymaster.h
  35. KeyStorage.cpp
  36. KeyStorage.h
  37. KeyUtil.cpp
  38. KeyUtil.h
  39. Loop.cpp
  40. Loop.h
  41. main.cpp
  42. MetadataCrypt.cpp
  43. MetadataCrypt.h
  44. MoveStorage.cpp
  45. MoveStorage.h
  46. NetlinkHandler.cpp
  47. NetlinkHandler.h
  48. NetlinkManager.cpp
  49. NetlinkManager.h
  50. OWNERS
  51. PREUPLOAD.cfg
  52. Process.cpp
  53. Process.h
  54. ScryptParameters.cpp
  55. ScryptParameters.h
  56. secdiscard.cpp
  57. sehandle.h
  58. Utils.cpp
  59. Utils.h
  60. vdc.cpp
  61. vdc.rc
  62. vold.rc
  63. vold_prepare_subdirs.cpp
  64. VoldNativeService.cpp
  65. VoldNativeService.h
  66. VoldUtil.cpp
  67. VoldUtil.h
  68. VolumeManager.cpp
  69. VolumeManager.h
  70. wait_for_keymaster.cpp
  71. wait_for_keymaster.rc