243 lines
6.9 KiB
C
243 lines
6.9 KiB
C
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <errno.h>
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#include <string.h>
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//#include <cutils/properties.h>
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//#include <hardware/boot_control.h>
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//#include <hardware/hardware.h>
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#include <libavb_ab/libavb_ab.h>
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#include <libavb_user/libavb_user.h>
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static AvbOps* ops = NULL;
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//static void module_init(boot_control_module_t* module) {
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static void module_init() {
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if (ops != NULL) {
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return;
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}
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ops = avb_ops_user_new();
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if (ops == NULL) {
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avb_error("Unable to allocate AvbOps instance.\n");
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}
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}
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//static unsigned int module_getNumberSlots(boot_control_module_t* module) {
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static unsigned int module_getNumberSlots() {
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return 2;
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}
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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//static unsigned int module_getCurrentSlot(boot_control_module_t* module) {
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static unsigned int module_getCurrentSlot() {
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/*
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char propbuf[PROPERTY_VALUE_MAX];
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property_get("ro.boot.slot_suffix", propbuf, "");
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if (strcmp(propbuf, "_a") == 0) {
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return 0;
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} else if (strcmp(propbuf, "_b") == 0) {
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return 1;
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} else {
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avb_errorv("Unexpected slot suffix '", propbuf, "'.\n", NULL);
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return 0;
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}*/
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char cmdline[1024];
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int fd = open("/proc/cmdline", O_RDONLY);
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read(fd, (char*)cmdline, 1024);
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close(fd);
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char *slot = strstr(cmdline, "androidboot.slot_suffix");
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if(slot != NULL){
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slot = strstr(slot, "=");
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if(slot != NULL){
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slot +=2;
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if((*slot) == 'a'){
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return 0;
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}else if((*slot) == 'b'){
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return 1;
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}
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}
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}
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return 0;
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}
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//static int module_markBootSuccessful(boot_control_module_t* module) {
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static int module_markBootSuccessful() {
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if (avb_ab_mark_slot_successful(ops->ab_ops, module_getCurrentSlot()) ==
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AVB_IO_RESULT_OK) {
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return 0;
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} else {
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return -EIO;
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}
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}
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//static int module_setActiveBootSlot(boot_control_module_t* module,
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static int module_setActiveBootSlot(unsigned int slot) {
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if (slot >= module_getNumberSlots()) {
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return -EINVAL;
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} else if (avb_ab_mark_slot_active(ops->ab_ops, slot) == AVB_IO_RESULT_OK) {
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return 0;
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} else {
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return -EIO;
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}
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}
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//static int module_setSlotAsUnbootable(struct boot_control_module* module,
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static int module_setSlotAsUnbootable(unsigned int slot) {
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if (slot >= module_getNumberSlots()) {
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return -EINVAL;
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} else if (avb_ab_mark_slot_unbootable(ops->ab_ops, slot) ==
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AVB_IO_RESULT_OK) {
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return 0;
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} else {
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return -EIO;
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}
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}
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//static int module_isSlotBootable(struct boot_control_module* module,
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static int module_isSlotBootable(unsigned int slot) {
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AvbABData ab_data;
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bool is_bootable;
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avb_assert(slot < 2);
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if (slot >= module_getNumberSlots()) {
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return -EINVAL;
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} else if (avb_ab_data_read(ops->ab_ops, &ab_data) != AVB_IO_RESULT_OK) {
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return -EIO;
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}
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is_bootable = (ab_data.slots[slot].priority > 0) &&
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(ab_data.slots[slot].successful_boot ||
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(ab_data.slots[slot].tries_remaining > 0));
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return is_bootable ? 1 : 0;
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}
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//static int module_isSlotMarkedSuccessful(struct boot_control_module* module,
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static int module_isSlotMarkedSuccessful(
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unsigned int slot) {
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AvbABData ab_data;
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bool is_marked_successful;
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avb_assert(slot < 2);
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if (slot >= module_getNumberSlots()) {
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return -EINVAL;
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} else if (avb_ab_data_read(ops->ab_ops, &ab_data) != AVB_IO_RESULT_OK) {
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return -EIO;
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}
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is_marked_successful = ab_data.slots[slot].successful_boot;
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return is_marked_successful ? 1 : 0;
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}
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//static const char* module_getSuffix(boot_control_module_t* module,
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static const char* module_getSuffix(unsigned int slot) {
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static const char* suffix[2] = {"_a", "_b"};
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if (slot >= 2) {
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return NULL;
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}
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return suffix[slot];
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}
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/*
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static struct hw_module_methods_t module_methods = {
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.open = NULL,
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};
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boot_control_module_t HAL_MODULE_INFO_SYM = {
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.common =
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{
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.tag = HARDWARE_MODULE_TAG,
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.module_api_version = BOOT_CONTROL_MODULE_API_VERSION_0_1,
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.hal_api_version = HARDWARE_HAL_API_VERSION,
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.id = BOOT_CONTROL_HARDWARE_MODULE_ID,
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.name = "AVB implementation of boot_control HAL",
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.author = "The Android Open Source Project",
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.methods = &module_methods,
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},
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.init = module_init,
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.getNumberSlots = module_getNumberSlots,
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.getCurrentSlot = module_getCurrentSlot,
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.markBootSuccessful = module_markBootSuccessful,
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.setActiveBootSlot = module_setActiveBootSlot,
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.setSlotAsUnbootable = module_setSlotAsUnbootable,
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.isSlotBootable = module_isSlotBootable,
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.getSuffix = module_getSuffix,
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.isSlotMarkedSuccessful = module_isSlotMarkedSuccessful,
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};
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*/
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#include <stdio.h>
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int main(int argc, char *argv[]){
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int slot_where;
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module_init();
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/**
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bootcontrol activeboot
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bootcontrol unbootable
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bootcontrol bootable
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*/
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if(argc < 2){
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printf("please input bootactive/bootunable/bootable <0 | 1>\n"
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"Example:\n"
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" %s activeboot 0 #set active slot to _a\n",
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argv[0]);
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return -1;
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}
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if(strcmp(argv[1], "bootable") == 0){
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module_markBootSuccessful();
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}else if(strcmp(argv[1], "bootunable") == 0){
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if(argc == 3){
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slot_where = atoi(argv[2]);
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module_setSlotAsUnbootable(slot_where);
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}
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}else if(strcmp(argv[1], "bootactive") == 0){
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if(argc == 3){
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slot_where = atoi(argv[2]);
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module_setActiveBootSlot(slot_where);
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}
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}else if(strcmp(argv[1], "success") == 0){
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if(argc == 3){
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slot_where = atoi(argv[2]);
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int res = module_isSlotMarkedSuccessful(slot_where);
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printf("isSlotMarkedSuccessful = %d\n", res);
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}
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}else {
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printf("please input activeboot/unableboot/bootable\n");
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return -1;
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}
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return 0;
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}
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