Merge "Revert "Remove comments and code about ro.boot.slot"" (eb00b1f3) · Commits · e / os / android_system_core

adb/set_verity_enable_state_service.cpp

+13 −1

Original line number	Diff line number	Diff line
		@@ -93,9 +93,21 @@ static bool set_verity_enabled_state(int fd, const char* block_device, const cha
		/* Helper function to get A/B suffix, if any. If the device isn't
		* using A/B the empty string is returned. Otherwise either "_a",
		* "_b", ... is returned.
		*
		* Note that since sometime in O androidboot.slot_suffix is deprecated
		* and androidboot.slot should be used instead. Since bootloaders may
		* be out of sync with the OS, we check both and for extra safety
		* prepend a leading underscore if there isn't one already.
		*/
		static std::string get_ab_suffix() {
		return android::base::GetProperty("ro.boot.slot_suffix", "");
		std::string ab_suffix = android::base::GetProperty("ro.boot.slot_suffix", "");
		if (ab_suffix == "") {
		ab_suffix = android::base::GetProperty("ro.boot.slot", "");
		}
		if (ab_suffix.size() > 0 && ab_suffix[0] != '_') {
		ab_suffix = std::string("_") + ab_suffix;
		}
		return ab_suffix;
		}

		/* Use AVB to turn verity on/off */

+10 −3

Original line number	Diff line number	Diff line
		@@ -21,12 +21,19 @@
		#include "fs_mgr.h"
		#include "fs_mgr_priv.h"

		// Returns "_a" or "_b" based on androidboot.slot_suffix in kernel cmdline, or an empty string
		// if that parameter does not exist.
		// Returns "_a" or "_b" based on two possible values in kernel cmdline:
		// - androidboot.slot = a or b OR
		// - androidboot.slot_suffix = _a or _b
		// TODO: remove slot_suffix once it's deprecated.
		std::string fs_mgr_get_slot_suffix() {
		std::string slot;
		std::string ab_suffix;

		fs_mgr_get_boot_config("slot_suffix", &ab_suffix);
		if (fs_mgr_get_boot_config("slot", &slot)) {
		ab_suffix = "_" + slot;
		} else if (!fs_mgr_get_boot_config("slot_suffix", &ab_suffix)) {
		ab_suffix = "";
		}
		return ab_suffix;
		}