Create a fallback to install from fuse if mmap fails
We may fail to memory map the package on 32 bit builds for packages with
2GiB+ size. This cl tries to install the package with fuse when memory map
fails in such cases.
Bug: 127071893
Test: build 32 bit version sailfish, push package and block.map, reboot into recovery with
the corresponding update_package argument.
Change-Id: I5dae4f3e27ccaf8d64ff3657d36f0e75db2330b0
diff --git a/recovery.cpp b/recovery.cpp
index b18a8e7..97ca0a5 100644
--- a/recovery.cpp
+++ b/recovery.cpp
@@ -84,6 +84,8 @@
*
* The arguments which may be supplied in the recovery.command file:
* --update_package=path - verify install an OTA package file
+ * --install_with_fuse - install the update package with FUSE. This allows installation of large
+ * packages on LP32 builds. Since the mmap will otherwise fail due to out of memory.
* --wipe_data - erase user data (and cache), then reboot
* --prompt_and_wipe_data - prompt the user that data is corrupt, with their consent erase user
* data (and cache), then reboot
@@ -577,6 +579,7 @@
static constexpr struct option OPTIONS[] = {
{ "fastboot", no_argument, nullptr, 0 },
{ "fsck_unshare_blocks", no_argument, nullptr, 0 },
+ { "install_with_fuse", no_argument, nullptr, 0 },
{ "just_exit", no_argument, nullptr, 'x' },
{ "locale", required_argument, nullptr, 0 },
{ "prompt_and_wipe_data", no_argument, nullptr, 0 },
@@ -597,6 +600,7 @@
};
const char* update_package = nullptr;
+ bool install_with_fuse = false; // memory map the update package by default.
bool should_wipe_data = false;
bool should_prompt_and_wipe_data = false;
bool should_wipe_cache = false;
@@ -632,6 +636,8 @@
std::string option = OPTIONS[option_index].name;
if (option == "fsck_unshare_blocks") {
fsck_unshare_blocks = true;
+ } else if (option == "install_with_fuse") {
+ install_with_fuse = true;
} else if (option == "locale" || option == "fastboot") {
// Handled in recovery_main.cpp
} else if (option == "prompt_and_wipe_data") {
@@ -737,10 +743,24 @@
} else {
ensure_path_mounted(update_package);
}
- // TODO(xunchang) install package from fuse for large packages on ILP32 builds.
- auto package = Package::CreateMemoryPackage(
- update_package, std::bind(&RecoveryUI::SetProgress, ui, std::placeholders::_1));
- status = InstallPackage(package.get(), update_package, should_wipe_cache, retry_count, ui);
+
+ if (install_with_fuse) {
+ LOG(INFO) << "Installing package " << update_package << " with fuse";
+ status = InstallWithFuseFromPath(update_package, ui);
+ } else if (auto memory_package = Package::CreateMemoryPackage(
+ update_package,
+ std::bind(&RecoveryUI::SetProgress, ui, std::placeholders::_1));
+ memory_package != nullptr) {
+ status = InstallPackage(memory_package.get(), update_package, should_wipe_cache,
+ retry_count, ui);
+ } else {
+ // We may fail to memory map the package on 32 bit builds for packages with 2GiB+ size.
+ // In such cases, we will try to install the package with fuse. This is not the default
+ // installation method because it introduces a layer of indirection from the kernel space.
+ LOG(WARNING) << "Failed to memory map package " << update_package
+ << "; falling back to install with fuse";
+ status = InstallWithFuseFromPath(update_package, ui);
+ }
if (status != INSTALL_SUCCESS) {
ui->Print("Installation aborted.\n");