diff options
Diffstat (limited to 'bootloader_message')
| -rw-r--r-- | bootloader_message/Android.mk | 30 | ||||
| -rw-r--r-- | bootloader_message/bootloader_message.cpp | 279 | ||||
| -rw-r--r-- | bootloader_message/include/bootloader_message/bootloader_message.h | 170 |
3 files changed, 253 insertions, 226 deletions
diff --git a/bootloader_message/Android.mk b/bootloader_message/Android.mk index 1d5c85fe3..0d84713c3 100644 --- a/bootloader_message/Android.mk +++ b/bootloader_message/Android.mk @@ -14,32 +14,16 @@ LOCAL_PATH := $(call my-dir) -ifeq ($(shell test $(PLATFORM_SDK_VERSION) -ge 25; echo $$?),0) - include $(CLEAR_VARS) - LOCAL_CLANG := true - LOCAL_SRC_FILES := bootloader_message.cpp - LOCAL_MODULE := libbootloader_message - LOCAL_STATIC_LIBRARIES := libfs_mgr - LOCAL_C_INCLUDES := $(LOCAL_PATH)/include - LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include - include $(BUILD_STATIC_LIBRARY) -endif - include $(CLEAR_VARS) LOCAL_CLANG := true LOCAL_SRC_FILES := bootloader_message.cpp LOCAL_MODULE := libbootloader_message -LOCAL_C_INCLUDES += bionic $(LOCAL_PATH)/include -ifeq ($(shell test $(PLATFORM_SDK_VERSION) -lt 23; echo $$?),0) - LOCAL_C_INCLUDES += external/stlport/stlport - LOCAL_SHARED_LIBRARIES += libstlport -else - LOCAL_SHARED_LIBRARIES += libc++ -endif -LOCAL_CFLAGS := -DEXCLUDE_FS_MGR -# ignore bootloader's factory reset command even when written to /misc -ifeq ($(TW_IGNORE_MISC_WIPE_DATA), true) - LOCAL_CFLAGS += -DIGNORE_MISC_WIPE_DATA +LOCAL_STATIC_LIBRARIES := libbase libfs_mgr +LOCAL_CFLAGS := -Werror +ifeq ($(shell test $(PLATFORM_SDK_VERSION) -lt 26; echo $$?),0) + TARGET_GLOBAL_CFLAGS += -DUSE_OLD_BOOTLOADER_MESSAGE + CLANG_TARGET_GLOBAL_CFLAGS += -DUSE_OLD_BOOTLOADER_MESSAGE endif +LOCAL_C_INCLUDES := $(LOCAL_PATH)/include LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include -include $(BUILD_SHARED_LIBRARY) +include $(BUILD_STATIC_LIBRARY) diff --git a/bootloader_message/bootloader_message.cpp b/bootloader_message/bootloader_message.cpp index 4d1ce5bb4..dcaeb794f 100644 --- a/bootloader_message/bootloader_message.cpp +++ b/bootloader_message/bootloader_message.cpp @@ -19,31 +19,18 @@ #include <errno.h> #include <fcntl.h> #include <string.h> -#include <stdlib.h> -#include <sys/stat.h> -#include <unistd.h> -#include <sys/types.h> -#include <sys/system_properties.h> #include <string> #include <vector> -/* #include <android-base/file.h> #include <android-base/stringprintf.h> #include <android-base/unique_fd.h> -*/ -#ifndef EXCLUDE_FS_MGR #include <fs_mgr.h> -#endif -static std::string misc_blkdev; - -void set_misc_device(std::string name) { - misc_blkdev = name; -} +#ifdef USE_OLD_BOOTLOADER_MESSAGE +#include <sys/system_properties.h> -#ifndef EXCLUDE_FS_MGR static struct fstab* read_fstab(std::string* err) { // The fstab path is always "/fstab.${ro.hardware}". std::string fstab_path = "/fstab."; @@ -62,23 +49,28 @@ static struct fstab* read_fstab(std::string* err) { #endif static std::string get_misc_blk_device(std::string* err) { -#ifdef EXCLUDE_FS_MGR - return misc_blkdev; -#else +#ifdef USE_OLD_BOOTLOADER_MESSAGE struct fstab* fstab = read_fstab(err); - if (fstab == nullptr) { +#else + std::unique_ptr<fstab, decltype(&fs_mgr_free_fstab)> fstab(fs_mgr_read_fstab_default(), + fs_mgr_free_fstab); +#endif + if (!fstab) { + *err = "failed to read default fstab"; return ""; } +#ifdef USE_OLD_BOOTLOADER_MESSAGE fstab_rec* record = fs_mgr_get_entry_for_mount_point(fstab, "/misc"); +#else + fstab_rec* record = fs_mgr_get_entry_for_mount_point(fstab.get(), "/misc"); +#endif if (record == nullptr) { *err = "failed to find /misc partition"; return ""; } return record->blk_device; -#endif } - // In recovery mode, recovery can get started and try to access the misc // device before the kernel has actually created it. static bool wait_for_device(const std::string& blk_device, std::string* err) { @@ -90,127 +82,94 @@ static bool wait_for_device(const std::string& blk_device, std::string* err) { struct stat buf; ret = stat(blk_device.c_str(), &buf); if (ret == -1) { - char buffer[2048]; - sprintf(buffer, "failed to stat %s try %d: %s\n", - blk_device.c_str(), tries, strerror(errno)); - *err += buffer; - /* *err += android::base::StringPrintf("failed to stat %s try %d: %s\n", blk_device.c_str(), tries, strerror(errno)); - */ sleep(1); } } while (ret && tries < 10); if (ret) { - *err += "failed to stat " + blk_device + "\n"; - /* *err += android::base::StringPrintf("failed to stat %s\n", blk_device.c_str()); - */ } return ret == 0; } -static bool read_misc_partition(void* p, size_t size, size_t offset, std::string* err) { - std::string misc_blk_device = get_misc_blk_device(err); - if (misc_blk_device.empty()) { - return false; - } +static bool read_misc_partition(void* p, size_t size, const std::string& misc_blk_device, + size_t offset, std::string* err) { if (!wait_for_device(misc_blk_device, err)) { return false; } - int fd(open(misc_blk_device.c_str(), O_RDONLY)); - if (fd < 0) { - *err = "failed to open " + misc_blk_device + ": "; - *err += strerror(errno); - /* + android::base::unique_fd fd(open(misc_blk_device.c_str(), O_RDONLY)); + if (fd == -1) { *err = android::base::StringPrintf("failed to open %s: %s", misc_blk_device.c_str(), strerror(errno)); - */ return false; } if (lseek(fd, static_cast<off_t>(offset), SEEK_SET) != static_cast<off_t>(offset)) { - *err = "failed to lseek " + misc_blk_device + ": "; - *err += strerror(errno); - close(fd); - /* *err = android::base::StringPrintf("failed to lseek %s: %s", misc_blk_device.c_str(), strerror(errno)); - */ return false; } - if (read(fd, p, size) != size) { - *err = "failed to read " + misc_blk_device + ": "; - *err += strerror(errno); - close(fd); - /* + if (!android::base::ReadFully(fd, p, size)) { *err = android::base::StringPrintf("failed to read %s: %s", misc_blk_device.c_str(), strerror(errno)); - */ return false; } - close(fd); return true; } -static bool write_misc_partition(const void* p, size_t size, size_t offset, std::string* err) { - std::string misc_blk_device = get_misc_blk_device(err); - if (misc_blk_device.empty()) { - *err = "no misc device set"; - return false; - } - int fd = (open(misc_blk_device.c_str(), O_WRONLY | O_SYNC)); +static bool write_misc_partition(const void* p, size_t size, const std::string& misc_blk_device, + size_t offset, std::string* err) { + android::base::unique_fd fd(open(misc_blk_device.c_str(), O_WRONLY)); if (fd == -1) { - *err = "failed to open " + misc_blk_device + ": "; - *err += strerror(errno); - /* *err = android::base::StringPrintf("failed to open %s: %s", misc_blk_device.c_str(), strerror(errno)); - */ return false; } if (lseek(fd, static_cast<off_t>(offset), SEEK_SET) != static_cast<off_t>(offset)) { - *err = "failed to lseek " + misc_blk_device + ": "; - *err += strerror(errno); - close(fd); - /* *err = android::base::StringPrintf("failed to lseek %s: %s", misc_blk_device.c_str(), strerror(errno)); - */ return false; } - if (write(fd, p, size) != size) { - *err = "failed to write " + misc_blk_device + ": "; - *err += strerror(errno); - close(fd); - /* + if (!android::base::WriteFully(fd, p, size)) { *err = android::base::StringPrintf("failed to write %s: %s", misc_blk_device.c_str(), strerror(errno)); - */ return false; } - - // TODO: O_SYNC and fsync duplicates each other? if (fsync(fd) == -1) { - *err = "failed to fsync " + misc_blk_device + ": "; - *err += strerror(errno); - close(fd); - /* *err = android::base::StringPrintf("failed to fsync %s: %s", misc_blk_device.c_str(), strerror(errno)); - */ return false; } - close(fd); return true; } +bool read_bootloader_message_from(bootloader_message* boot, const std::string& misc_blk_device, + std::string* err) { + return read_misc_partition(boot, sizeof(*boot), misc_blk_device, + BOOTLOADER_MESSAGE_OFFSET_IN_MISC, err); +} + bool read_bootloader_message(bootloader_message* boot, std::string* err) { - return read_misc_partition(boot, sizeof(*boot), BOOTLOADER_MESSAGE_OFFSET_IN_MISC, err); + std::string misc_blk_device = get_misc_blk_device(err); + if (misc_blk_device.empty()) { + return false; + } + return read_bootloader_message_from(boot, misc_blk_device, err); +} + +bool write_bootloader_message_to(const bootloader_message& boot, const std::string& misc_blk_device, + std::string* err) { + return write_misc_partition(&boot, sizeof(boot), misc_blk_device, + BOOTLOADER_MESSAGE_OFFSET_IN_MISC, err); } bool write_bootloader_message(const bootloader_message& boot, std::string* err) { - return write_misc_partition(&boot, sizeof(boot), BOOTLOADER_MESSAGE_OFFSET_IN_MISC, err); + std::string misc_blk_device = get_misc_blk_device(err); + if (misc_blk_device.empty()) { + return false; + } + return write_bootloader_message_to(boot, misc_blk_device, err); } bool clear_bootloader_message(std::string* err) { @@ -224,120 +183,72 @@ bool write_bootloader_message(const std::vector<std::string>& options, std::stri strlcpy(boot.recovery, "recovery\n", sizeof(boot.recovery)); for (const auto& s : options) { strlcat(boot.recovery, s.c_str(), sizeof(boot.recovery)); - if (s.substr(s.size() - 1) != "\n") { + if (s.back() != '\n') { strlcat(boot.recovery, "\n", sizeof(boot.recovery)); } } return write_bootloader_message(boot, err); } +bool update_bootloader_message(const std::vector<std::string>& options, std::string* err) { + bootloader_message boot; + if (!read_bootloader_message(&boot, err)) { + return false; + } + + // Zero out the entire fields. + memset(boot.command, 0, sizeof(boot.command)); + memset(boot.recovery, 0, sizeof(boot.recovery)); + + strlcpy(boot.command, "boot-recovery", sizeof(boot.command)); + strlcpy(boot.recovery, "recovery\n", sizeof(boot.recovery)); + for (const auto& s : options) { + strlcat(boot.recovery, s.c_str(), sizeof(boot.recovery)); + if (s.back() != '\n') { + strlcat(boot.recovery, "\n", sizeof(boot.recovery)); + } + } + return write_bootloader_message(boot, err); +} + +bool write_reboot_bootloader(std::string* err) { + bootloader_message boot; + if (!read_bootloader_message(&boot, err)) { + return false; + } + if (boot.command[0] != '\0') { + *err = "Bootloader command pending."; + return false; + } + strlcpy(boot.command, "bootonce-bootloader", sizeof(boot.command)); + return write_bootloader_message(boot, err); +} + bool read_wipe_package(std::string* package_data, size_t size, std::string* err) { + std::string misc_blk_device = get_misc_blk_device(err); + if (misc_blk_device.empty()) { + return false; + } package_data->resize(size); - return read_misc_partition(&(*package_data)[0], size, WIPE_PACKAGE_OFFSET_IN_MISC, err); + return read_misc_partition(&(*package_data)[0], size, misc_blk_device, + WIPE_PACKAGE_OFFSET_IN_MISC, err); } bool write_wipe_package(const std::string& package_data, std::string* err) { - return write_misc_partition(package_data.data(), package_data.size(), + std::string misc_blk_device = get_misc_blk_device(err); + if (misc_blk_device.empty()) { + return false; + } + return write_misc_partition(package_data.data(), package_data.size(), misc_blk_device, WIPE_PACKAGE_OFFSET_IN_MISC, err); } -extern "C" bool write_bootloader_message(const char* options) { +extern "C" bool write_reboot_bootloader(void) { std::string err; - bootloader_message boot = {}; - memcpy(&boot, options, sizeof(boot)); - return write_bootloader_message(boot, &err); + return write_reboot_bootloader(&err); } -static const char *COMMAND_FILE = "/cache/recovery/command"; -static const int MAX_ARG_LENGTH = 4096; -static const int MAX_ARGS = 100; - -// command line args come from, in decreasing precedence: -// - the actual command line -// - the bootloader control block (one per line, after "recovery") -// - the contents of COMMAND_FILE (one per line) -void -get_args(int *argc, char ***argv) { - bootloader_message boot = {}; - std::string err; - if (!read_bootloader_message(&boot, &err)) { - printf("%s\n", err.c_str()); - // If fails, leave a zeroed bootloader_message. - memset(&boot, 0, sizeof(boot)); - } - //stage = strndup(boot.stage, sizeof(boot.stage)); - - if (boot.command[0] != 0 && boot.command[0] != 255) { - printf("Boot command: %.*s\n", (int)sizeof(boot.command), boot.command); - } - - if (boot.status[0] != 0 && boot.status[0] != 255) { - printf("Boot status: %.*s\n", (int)sizeof(boot.status), boot.status); - } - - // --- if arguments weren't supplied, look in the bootloader control block - if (*argc <= 1) { - boot.recovery[sizeof(boot.recovery) - 1] = '\0'; // Ensure termination - const char *arg = strtok(boot.recovery, "\n"); - if (arg != NULL && !strcmp(arg, "recovery")) { - *argv = (char **) malloc(sizeof(char *) * MAX_ARGS); - (*argv)[0] = strdup(arg); - for (*argc = 1; *argc < MAX_ARGS; ++*argc) { - if ((arg = strtok(NULL, "\n")) == NULL) break; - -// if the device does not have an own recovery key combo we just want to open TWRP after -// walking through the factory reset screen - without actually doing a factory reset -#ifdef IGNORE_MISC_WIPE_DATA - if (!strcmp(arg, "--wipe_data")) { - (*argv)[*argc] = ""; - *argc = *argc -1; - printf("Bootloader arg \"%s\" ignored because TWRP was compiled with TW_IGNORE_MISC_WIPE_DATA\n", arg); - continue; - } -#endif - (*argv)[*argc] = strdup(arg); - } - printf("Got arguments from boot message\n"); - } else if (boot.recovery[0] != 0 && boot.recovery[0] != 255) { - printf("Bad boot message\n\"%.20s\"\n", boot.recovery); - } - } - - // --- if that doesn't work, try the command file (if we have /cache). - if (*argc <= 1/* && has_cache*/) { - FILE *fp = fopen(COMMAND_FILE, "r"); - if (fp != NULL) { - char *token; - char *argv0 = (*argv)[0]; - *argv = (char **) malloc(sizeof(char *) * MAX_ARGS); - (*argv)[0] = argv0; // use the same program name - - char buf[MAX_ARG_LENGTH]; - for (*argc = 1; *argc < MAX_ARGS; ++*argc) { - if (!fgets(buf, sizeof(buf), fp)) break; - token = strtok(buf, "\r\n"); - if (token != NULL) { - (*argv)[*argc] = strdup(token); // Strip newline. - } else { - --*argc; - } - } - - fclose(fp); - printf("Got arguments from %s\n", COMMAND_FILE); - } - } - - // --> write the arguments we have back into the bootloader control block - // always boot into recovery after this (until finish_recovery() is called) - strlcpy(boot.command, "boot-recovery", sizeof(boot.command)); - strlcpy(boot.recovery, "recovery\n", sizeof(boot.recovery)); - int i; - for (i = 1; i < *argc; ++i) { - strlcat(boot.recovery, (*argv)[i], sizeof(boot.recovery)); - strlcat(boot.recovery, "\n", sizeof(boot.recovery)); - } - if (!write_bootloader_message(boot, &err)) { - printf("%s\n", err.c_str()); - } +extern "C" bool write_bootloader_message(const char* options) { + std::string err; + return write_bootloader_message({options}, &err); } diff --git a/bootloader_message/include/bootloader_message/bootloader_message.h b/bootloader_message/include/bootloader_message/bootloader_message.h index e0fc2cd8a..4ad18f2d9 100644 --- a/bootloader_message/include/bootloader_message/bootloader_message.h +++ b/bootloader_message/include/bootloader_message/bootloader_message.h @@ -17,23 +17,21 @@ #ifndef _BOOTLOADER_MESSAGE_H #define _BOOTLOADER_MESSAGE_H +#include <assert.h> #include <stddef.h> +#include <stdint.h> // Spaces used by misc partition are as below: -// 0 - 2K Bootloader Message -// 2K - 16K Used by Vendor's bootloader +// 0 - 2K For bootloader_message +// 2K - 16K Used by Vendor's bootloader (the 2K - 4K range may be optionally used +// as bootloader_message_ab struct) // 16K - 64K Used by uncrypt and recovery to store wipe_package for A/B devices // Note that these offsets are admitted by bootloader,recovery and uncrypt, so they // are not configurable without changing all of them. -#ifdef BOARD_RECOVERY_BLDRMSG_OFFSET -static const size_t BOOTLOADER_MESSAGE_OFFSET_IN_MISC = BOARD_RECOVERY_BLDRMSG_OFFSET; -static const size_t WIPE_PACKAGE_OFFSET_IN_MISC = 16 * 1024 + BOOTLOADER_MESSAGE_OFFSET_IN_MISC; -#else static const size_t BOOTLOADER_MESSAGE_OFFSET_IN_MISC = 0; static const size_t WIPE_PACKAGE_OFFSET_IN_MISC = 16 * 1024; -#endif -/* Bootloader Message +/* Bootloader Message (2-KiB) * * This structure describes the content of a block in flash * that is used for recovery and the bootloader to talk to @@ -44,8 +42,9 @@ static const size_t WIPE_PACKAGE_OFFSET_IN_MISC = 16 * 1024; * It is also updated by the bootloader when firmware update * is complete (to boot into recovery for any final cleanup) * - * The status field is written by the bootloader after the - * completion of an "update-radio" or "update-hboot" command. + * The status field was used by the bootloader after the completion + * of an "update-radio" or "update-hboot" command, which has been + * deprecated since Froyo. * * The recovery field is only written by linux and used * for the system to send a message to recovery or the @@ -56,18 +55,17 @@ static const size_t WIPE_PACKAGE_OFFSET_IN_MISC = 16 * 1024; * package it is. If the value is of the format "#/#" (eg, "1/3"), * the UI will add a simple indicator of that status. * - * The slot_suffix field is used for A/B implementations where the - * bootloader does not set the androidboot.ro.boot.slot_suffix kernel - * commandline parameter. This is used by fs_mgr to mount /system and - * other partitions with the slotselect flag set in fstab. A/B - * implementations are free to use all 32 bytes and may store private - * data past the first NUL-byte in this field. + * We used to have slot_suffix field for A/B boot control metadata in + * this struct, which gets unintentionally cleared by recovery or + * uncrypt. Move it into struct bootloader_message_ab to avoid the + * issue. */ struct bootloader_message { char command[32]; char status[32]; char recovery[768]; +#ifdef USE_OLD_BOOTLOADER_MESSAGE // The 'recovery' field used to be 1024 bytes. It has only ever // been used to store the recovery command line, so 768 bytes // should be plenty. We carve off the last 256 bytes to store the @@ -76,23 +74,156 @@ struct bootloader_message { char stage[32]; char slot_suffix[32]; char reserved[192]; +#else + // The 'recovery' field used to be 1024 bytes. It has only ever + // been used to store the recovery command line, so 768 bytes + // should be plenty. We carve off the last 256 bytes to store the + // stage string (for multistage packages) and possible future + // expansion. + char stage[32]; + + // The 'reserved' field used to be 224 bytes when it was initially + // carved off from the 1024-byte recovery field. Bump it up to + // 1184-byte so that the entire bootloader_message struct rounds up + // to 2048-byte. + char reserved[1184]; +#endif +}; + +/** + * We must be cautious when changing the bootloader_message struct size, + * because A/B-specific fields may end up with different offsets. + */ +#if !defined(USE_OLD_BOOTLOADER_MESSAGE) && ((__STDC_VERSION__ >= 201112L) || defined(__cplusplus)) +static_assert(sizeof(struct bootloader_message) == 2048, + "struct bootloader_message size changes, which may break A/B devices"); +#endif + +/** + * The A/B-specific bootloader message structure (4-KiB). + * + * We separate A/B boot control metadata from the regular bootloader + * message struct and keep it here. Everything that's A/B-specific + * stays after struct bootloader_message, which should be managed by + * the A/B-bootloader or boot control HAL. + * + * The slot_suffix field is used for A/B implementations where the + * bootloader does not set the androidboot.ro.boot.slot_suffix kernel + * commandline parameter. This is used by fs_mgr to mount /system and + * other partitions with the slotselect flag set in fstab. A/B + * implementations are free to use all 32 bytes and may store private + * data past the first NUL-byte in this field. It is encouraged, but + * not mandatory, to use 'struct bootloader_control' described below. + */ +struct bootloader_message_ab { + struct bootloader_message message; + char slot_suffix[32]; + + // Round up the entire struct to 4096-byte. + char reserved[2016]; }; +/** + * Be cautious about the struct size change, in case we put anything post + * bootloader_message_ab struct (b/29159185). + */ +#if !defined(USE_OLD_BOOTLOADER_MESSAGE) && ((__STDC_VERSION__ >= 201112L) || defined(__cplusplus)) +static_assert(sizeof(struct bootloader_message_ab) == 4096, + "struct bootloader_message_ab size changes"); +#endif + +#define BOOT_CTRL_MAGIC 0x42414342 /* Bootloader Control AB */ +#define BOOT_CTRL_VERSION 1 + +struct slot_metadata { + // Slot priority with 15 meaning highest priority, 1 lowest + // priority and 0 the slot is unbootable. + uint8_t priority : 4; + // Number of times left attempting to boot this slot. + uint8_t tries_remaining : 3; + // 1 if this slot has booted successfully, 0 otherwise. + uint8_t successful_boot : 1; + // 1 if this slot is corrupted from a dm-verity corruption, 0 + // otherwise. + uint8_t verity_corrupted : 1; + // Reserved for further use. + uint8_t reserved : 7; +} __attribute__((packed)); + +/* Bootloader Control AB + * + * This struct can be used to manage A/B metadata. It is designed to + * be put in the 'slot_suffix' field of the 'bootloader_message' + * structure described above. It is encouraged to use the + * 'bootloader_control' structure to store the A/B metadata, but not + * mandatory. + */ +struct bootloader_control { + // NUL terminated active slot suffix. + char slot_suffix[4]; + // Bootloader Control AB magic number (see BOOT_CTRL_MAGIC). + uint32_t magic; + // Version of struct being used (see BOOT_CTRL_VERSION). + uint8_t version; + // Number of slots being managed. + uint8_t nb_slot : 3; + // Number of times left attempting to boot recovery. + uint8_t recovery_tries_remaining : 3; + // Ensure 4-bytes alignment for slot_info field. + uint8_t reserved0[2]; + // Per-slot information. Up to 4 slots. + struct slot_metadata slot_info[4]; + // Reserved for further use. + uint8_t reserved1[8]; + // CRC32 of all 28 bytes preceding this field (little endian + // format). + uint32_t crc32_le; +} __attribute__((packed)); + +#if (__STDC_VERSION__ >= 201112L) || defined(__cplusplus) +static_assert(sizeof(struct bootloader_control) == + sizeof(((struct bootloader_message_ab *)0)->slot_suffix), + "struct bootloader_control has wrong size"); +#endif + #ifdef __cplusplus #include <string> #include <vector> +// Read bootloader message into boot. Error message will be set in err. bool read_bootloader_message(bootloader_message* boot, std::string* err); + +// Read bootloader message from the specified misc device into boot. +bool read_bootloader_message_from(bootloader_message* boot, const std::string& misc_blk_device, + std::string* err); + +// Write bootloader message to BCB. bool write_bootloader_message(const bootloader_message& boot, std::string* err); + +// Write bootloader message to the specified BCB device. +bool write_bootloader_message_to(const bootloader_message& boot, + const std::string& misc_blk_device, std::string* err); + +// Write bootloader message (boots into recovery with the options) to BCB. Will +// set the command and recovery fields, and reset the rest. bool write_bootloader_message(const std::vector<std::string>& options, std::string* err); + +// Update bootloader message (boots into recovery with the options) to BCB. Will +// only update the command and recovery fields. +bool update_bootloader_message(const std::vector<std::string>& options, std::string* err); + +// Clear BCB. bool clear_bootloader_message(std::string* err); +// Writes the reboot-bootloader reboot reason to the bootloader_message. +bool write_reboot_bootloader(std::string* err); + +// Read the wipe package from BCB (from offset WIPE_PACKAGE_OFFSET_IN_MISC). bool read_wipe_package(std::string* package_data, size_t size, std::string* err); -bool write_wipe_package(const std::string& package_data, std::string* err); -void set_misc_device(std::string name); -void get_args(int *argc, char ***argv); +// Write the wipe package into BCB (to offset WIPE_PACKAGE_OFFSET_IN_MISC). +bool write_wipe_package(const std::string& package_data, std::string* err); #else @@ -100,6 +231,7 @@ void get_args(int *argc, char ***argv); // C Interface. bool write_bootloader_message(const char* options); +bool write_reboot_bootloader(void); #endif // ifdef __cplusplus |