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review.shift-gmbh.com / SHIFTPHONES / android_system_vold / 75273001a212d1e437434fe30efc72ba582f89c6
commit75273001a212d1e437434fe30efc72ba582f89c6[log] [tgz]
authorZim <zezeozue@google.com>Thu Mar 04 12:21:24 2021 +0000
committerZimuzo Ezeozue <zezeozue@google.com>Fri Mar 05 11:05:16 2021 +0000
tree94a429c3295945388a67516086c8b59547bd9c8d
parent2d0ea905388c7bbb8382d768c58cacbf4ef6dd01 [diff]
Avoid killing the FUSE daemon during unmount

The FUSE daemon is often holding fds on behalf of other apps and if a
volume is ejected the daemon would often get killed first while vold
is walking /proc/<pid>/fd to kill pids with open fds on the
volume. This is required for the volume unmount successfully.

To mitigate this, we avoid killing the FUSE daemon during the usual
/proc walk. This ensures that we first send SIGINT, SIGTERM and
SIGKILL to other apps first. There is an additional SIGKILL attempt
and on that last attempt, we kill the FUSE daemon as a last resort

Test: Manual
Bug: 171673908
Change-Id: I100d2ce4cb4c145cbb49e0696842e97dfba2c1c9
3 files changed
tree: 94a429c3295945388a67516086c8b59547bd9c8d
  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. Checkpoint.cpp
  14. Checkpoint.h
  15. CleanSpec.mk
  16. cryptfs.cpp
  17. cryptfs.h
  18. CryptoType.cpp
  19. CryptoType.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. IdleMaint.cpp
  29. IdleMaint.h
  30. KeyBuffer.cpp
  31. KeyBuffer.h
  32. Keymaster.cpp
  33. Keymaster.h
  34. KeyStorage.cpp
  35. KeyStorage.h
  36. KeyUtil.cpp
  37. KeyUtil.h
  38. Loop.cpp
  39. Loop.h
  40. main.cpp
  41. MetadataCrypt.cpp
  42. MetadataCrypt.h
  43. MoveStorage.cpp
  44. MoveStorage.h
  45. NetlinkHandler.cpp
  46. NetlinkHandler.h
  47. NetlinkManager.cpp
  48. NetlinkManager.h
  49. OWNERS
  50. PREUPLOAD.cfg
  51. Process.cpp
  52. Process.h
  53. ScryptParameters.cpp
  54. ScryptParameters.h
  55. secdiscard.cpp
  56. sehandle.h
  57. TEST_MAPPING
  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. VoldNativeServiceValidation.cpp
  67. VoldNativeServiceValidation.h
  68. VoldUtil.cpp
  69. VoldUtil.h
  70. VolumeManager.cpp
  71. VolumeManager.h
  72. wait_for_keymaster.cpp
  73. wait_for_keymaster.rc