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2016-01-14recovery: Fork a process for fuse when sideloading from SD card.Tao Bao1-2/+1
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
2015-07-24recovery: Switch fuse_* to C++.Tao Bao1-6/+0
Change-Id: Id50c3e6febd0ab61f10a654b9b265cf21a2d1701 (cherry picked from commit 71dc365f25676cfb3f62dbb7163697a8c3c5243d)
2015-07-20recovery: Switch fuse_* to C++.Tao Bao1-6/+0
Change-Id: I68770ad1a9e99caee292f8010cfd37dfea3acc64
2015-04-10Switch minadb over to C++.Elliott Hughes1-0/+6
Change-Id: I5afaf70caa590525627c676c88b445d3162de33e
2014-07-10do sdcard sideloading through the fuse filesystemDoug Zongker1-3/+4
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
2014-07-10refactor fuse sideloading codeDoug Zongker1-3/+3
Split the adb-specific portions (fetching a block from the adb host and closing the connections) out from the rest of the FUSE filesystem code, so that we can reuse the fuse stuff for installing off sdcards as well. Change-Id: I0ba385fd35999c5f5cad27842bc82024a264dd14
2014-07-02sideload without holding the whole package in RAMDoug Zongker1-4/+4
Implement a new method of sideloading over ADB that does not require the entire package to be held in RAM (useful for low-RAM devices and devices using block OTA where we'd rather have more RAM available for binary patching). We communicate with the host using a new adb service called "sideload-host", which makes the host act as a server, sending us different parts of the package file on request. We create a FUSE filesystem that creates a virtual file "/sideload/package.zip" that is backed by the ADB connection -- users see a normal file, but when they read from the file we're actually fetching the data from the adb host. This file is then passed to the verification and installation systems like any other. To prevent a malicious adb host implementation from serving different data to the verification and installation phases of sideloading, the FUSE filesystem verifies that the contents of the file don't change between reads -- every time we fetch a block from the host we compare its hash to the previous hash for that block (if it was read before) and cause the read to fail if it changes. One necessary change is that the minadbd started by recovery in sideload mode no longer drops its root privileges (they're needed to mount the FUSE filesystem). We rely on SELinux enforcement to restrict the set of things that can be accessed. Change-Id: Ida7dbd3b04c1d4e27a2779d88c1da0c7c81fb114
2009-06-12edify extensions for OTA package installation, part 1Doug Zongker1-7/+5
Adds the following edify functions: mount unmount format show_progress delete delete_recursive package_extract symlink set_perm set_perm_recursive This set is enough to extract and install the system part of a (full) OTA package. Adds the updater binary that extracts an edify script from the OTA package and then executes it. Minor changes to the edify core (adds a sleep() builtin for debugging, adds "." to the set of characters that can appear in an unquoted string).
2009-03-04auto import from //depot/cupcake/@135843The Android Open Source Project1-0/+24
2009-03-04auto import from //depot/cupcake/@135843The Android Open Source Project1-24/+0