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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
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Change-Id: Id50c3e6febd0ab61f10a654b9b265cf21a2d1701
(cherry picked from commit 71dc365f25676cfb3f62dbb7163697a8c3c5243d)
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Change-Id: I68770ad1a9e99caee292f8010cfd37dfea3acc64
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Also add missing TEMP_FAILURE_RETRYs on read, write, and lseek.
Bug: http://b/20625546
Change-Id: I03b198e11c1921b35518ee2dd005a7cfcf4fd94b
(cherry picked from commit 7bad7c4646ee8fd8d6e6ed0ffd3ddbb0c1b41a2f)
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Also add missing TEMP_FAILURE_RETRYs on read, write, and lseek.
Bug: http://b/20625546
Change-Id: I03b198e11c1921b35518ee2dd005a7cfcf4fd94b
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Change-Id: I06ea08400efa511e627be37a4fd70fbdfadea2e6
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Make a fuse filesystem that sits on top of the selected package file
on the sdcard, so we can verify that the file contents don't change
while being read and avoid copying the file to /tmp (that is, RAM)
before verifying and installing it.
Change-Id: Ifd982aa68bfe469eda5f839042648654bf7386a1
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