Gitiles
Code Review Sign In
gerrit.twrp.me / android_bootable_recovery / cdcf28f54f085520a96f4f9e480b8df324c5decb
commitcdcf28f54f085520a96f4f9e480b8df324c5decb[log] [tgz]
authorTao Bao <tbao@google.com>Wed Jan 13 15:05:20 2016 -0800
committerTao Bao <tbao@google.com>Wed Jan 13 21:29:20 2016 -0800
treec6184ee0a3460cbcdb054f0680187a786c2cfdb9
parentab9db5284ec6113c7d84f70f805dca21c3e6efd7 [diff]
recovery: Fork a process for fuse when sideloading from SD card.

For applying update from SD card, we used to use a thread to serve the
file with fuse. Since accessing through fuse involves going from kernel
to userspace to kernel, it may run into deadlock (e.g. for mmap_sem)
when a page fault occurs. Switch to using a process instead.

Bug: 23783099
Bug: 26313124
Change-Id: Iac0f55b1bdb078cadb520cfe1133e70fbb26eadd
3 files changed
tree: c6184ee0a3460cbcdb054f0680187a786c2cfdb9
  1. applypatch/
  2. edify/
  3. etc/
  4. fonts/
  5. minadbd/
  6. minui/
  7. minzip/
  8. mtdutils/
  9. res-hdpi/
  10. res-mdpi/
  11. res-xhdpi/
  12. res-xxhdpi/
  13. res-xxxhdpi/
  14. testdata/
  15. tests/
  16. tools/
  17. uncrypt/
  18. update_verifier/
  19. updater/
  20. res-560dpi ⇨ res-xxhdpi
  21. adb_install.cpp
  22. adb_install.h
  23. Android.mk
  24. asn1_decoder.cpp
  25. asn1_decoder.h
  26. bootloader.cpp
  27. bootloader.h
  28. CleanSpec.mk
  29. common.h
  30. default_device.cpp
  31. device.cpp
  32. device.h
  33. fuse_sdcard_provider.cpp
  34. fuse_sdcard_provider.h
  35. fuse_sideload.cpp
  36. fuse_sideload.h
  37. install.cpp
  38. install.h
  39. interlace-frames.py
  40. NOTICE
  41. print_sha1.h
  42. README.md
  43. recovery.cpp
  44. roots.cpp
  45. roots.h
  46. screen_ui.cpp
  47. screen_ui.h
  48. ui.cpp
  49. ui.h
  50. unique_fd.h
  51. verifier.cpp
  52. verifier.h
  53. verifier_test.cpp
  54. verifier_test.sh
  55. wear_ui.cpp
  56. wear_ui.h
README.md

The Recovery Image

Quick turn-around testing

mm -j && m ramdisk-nodeps && m recoveryimage-nodeps

# To boot into the new recovery image
# without flashing the recovery partition:
adb reboot bootloader
fastboot boot $ANDROID_PRODUCT_OUT/recovery.img