diff options
Diffstat (limited to 'fastboot/fastboot.cpp')
| -rw-r--r-- | fastboot/fastboot.cpp | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/fastboot/fastboot.cpp b/fastboot/fastboot.cpp index 3e090d7a5..e066bfff7 100644 --- a/fastboot/fastboot.cpp +++ b/fastboot/fastboot.cpp @@ -58,6 +58,7 @@ #include <android-base/strings.h> #include <android-base/unique_fd.h> #include <build/version.h> +#include <liblp/liblp.h> #include <platform_tools_version.h> #include <sparse/sparse.h> #include <ziparchive/zip_archive.h> @@ -407,6 +408,7 @@ static int show_help() { " -s SERIAL Specify a USB device.\n" " -s tcp|udp:HOST[:PORT] Specify a network device.\n" " -S SIZE[K|M|G] Break into sparse files no larger than SIZE.\n" + " --force Force a flash operation that may be unsafe.\n" " --slot SLOT Use SLOT; 'all' for both slots, 'other' for\n" " non-current slot (default: current active slot).\n" " --set-active[=SLOT] Sets the active slot before rebooting.\n" @@ -1505,6 +1507,31 @@ failed: fprintf(stderr, "FAILED (%s)\n", fb->Error().c_str()); } +static bool should_flash_in_userspace(const std::string& partition_name) { + auto path = find_item_given_name("super_empty.img"); + if (path.empty()) { + return false; + } + auto metadata = android::fs_mgr::ReadFromImageFile(path); + if (!metadata) { + return false; + } + for (const auto& partition : metadata->partitions) { + auto candidate = android::fs_mgr::GetPartitionName(partition); + if (partition.attributes & LP_PARTITION_ATTR_SLOT_SUFFIXED) { + // On retrofit devices, we don't know if, or whether, the A or B + // slot has been flashed for dynamic partitions. Instead we add + // both names to the list as a conservative guess. + if (candidate + "_a" == partition_name || candidate + "_b" == partition_name) { + return true; + } + } else if (candidate == partition_name) { + return true; + } + } + return false; +} + int FastBootTool::Main(int argc, char* argv[]) { bool wants_wipe = false; bool wants_reboot = false; @@ -1515,6 +1542,7 @@ int FastBootTool::Main(int argc, char* argv[]) { bool wants_set_active = false; bool skip_secondary = false; bool set_fbe_marker = false; + bool force_flash = false; int longindex; std::string slot_override; std::string next_active; @@ -1530,6 +1558,7 @@ int FastBootTool::Main(int argc, char* argv[]) { {"cmdline", required_argument, 0, 0}, {"disable-verification", no_argument, 0, 0}, {"disable-verity", no_argument, 0, 0}, + {"force", no_argument, 0, 0}, {"header-version", required_argument, 0, 0}, {"help", no_argument, 0, 'h'}, {"kernel-offset", required_argument, 0, 0}, @@ -1565,6 +1594,8 @@ int FastBootTool::Main(int argc, char* argv[]) { g_disable_verification = true; } else if (name == "disable-verity") { g_disable_verity = true; + } else if (name == "force") { + force_flash = true; } else if (name == "header-version") { g_boot_img_hdr.header_version = strtoul(optarg, nullptr, 0); } else if (name == "kernel-offset") { @@ -1779,6 +1810,16 @@ int FastBootTool::Main(int argc, char* argv[]) { if (fname.empty()) die("cannot determine image filename for '%s'", pname.c_str()); auto flash = [&](const std::string &partition) { + if (should_flash_in_userspace(partition) && !is_userspace_fastboot() && + !force_flash) { + die("The partition you are trying to flash is dynamic, and " + "should be flashed via fastbootd. Please run:\n" + "\n" + " fastboot reboot fastboot\n" + "\n" + "And try again. If you are intentionally trying to " + "overwrite a fixed partition, use --force."); + } do_flash(partition.c_str(), fname.c_str()); }; do_for_partitions(pname.c_str(), slot_override, flash, true); |