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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sysexits.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <hardware/hardware.h>
#include <hardware/boot_control.h>
static void usage(FILE* where, int argc, char* argv[])
{
fprintf(where,
"%s - command-line wrapper for the boot_control HAL.\n"
"\n"
"Usage:\n"
" %s COMMAND\n"
"\n"
"Commands:\n"
" %s hal-info - Show info about boot_control HAL used.\n"
" %s get-number-slots - Prints number of slots.\n"
" %s get-current-slot - Prints currently running SLOT.\n"
" %s mark-boot-successful - Mark current slot as GOOD.\n"
" %s set-active-boot-slot SLOT - On next boot, load and execute SLOT.\n"
" %s set-slot-as-unbootable SLOT - Mark SLOT as invalid.\n"
" %s is-slot-bootable SLOT - Returns 0 only if SLOT is bootable.\n"
" %s get-suffix SLOT - Prints suffix for SLOT.\n"
"\n"
"SLOT parameter is the zero-based slot-number.\n",
argv[0], argv[0], argv[0], argv[0], argv[0],
argv[0], argv[0], argv[0], argv[0], argv[0]);
}
static int do_hal_info(const hw_module_t *hw_module)
{
fprintf(stdout,
"HAL name: %s\n"
"HAL author: %s\n"
"HAL module version: %d.%d\n",
hw_module->name,
hw_module->author,
hw_module->module_api_version>>8,
hw_module->module_api_version&0xff);
return EX_OK;
}
static int do_get_number_slots(boot_control_module_t *module)
{
int num_slots = module->getNumberSlots(module);
fprintf(stdout, "%d\n", num_slots);
return EX_OK;
}
static int do_get_current_slot(boot_control_module_t *module)
{
int cur_slot = module->getCurrentSlot(module);
fprintf(stdout, "%d\n", cur_slot);
return EX_OK;
}
static int do_mark_boot_successful(boot_control_module_t *module)
{
int ret = module->markBootSuccessful(module);
if (ret == 0)
return EX_OK;
fprintf(stderr, "Error marking as having booted successfully: %s\n",
strerror(-ret));
return EX_SOFTWARE;
}
static int do_set_active_boot_slot(boot_control_module_t *module,
int slot_number)
{
int ret = module->setActiveBootSlot(module, slot_number);
if (ret == 0)
return EX_OK;
fprintf(stderr, "Error setting active boot slot: %s\n", strerror(-ret));
return EX_SOFTWARE;
}
static int do_set_slot_as_unbootable(boot_control_module_t *module,
int slot_number)
{
int ret = module->setSlotAsUnbootable(module, slot_number);
if (ret == 0)
return EX_OK;
fprintf(stderr, "Error setting slot as unbootable: %s\n", strerror(-ret));
return EX_SOFTWARE;
}
static int do_is_slot_bootable(boot_control_module_t *module, int slot_number)
{
int ret = module->isSlotBootable(module, slot_number);
if (ret == 0)
return EX_SOFTWARE;
return EX_OK;
}
static int do_get_suffix(boot_control_module_t *module, int slot_number)
{
const char* suffix = module->getSuffix(module, slot_number);
fprintf(stdout, "%s\n", suffix);
return EX_OK;
}
static int parse_slot(int pos, int argc, char *argv[])
{
if (pos > argc - 1) {
usage(stderr, argc, argv);
exit(EX_USAGE);
return -1;
}
errno = 0;
long int ret = strtol(argv[pos], NULL, 10);
if (errno != 0 || ret > INT_MAX || ret < 0) {
usage(stderr, argc, argv);
exit(EX_USAGE);
return -1;
}
return (int)ret;
}
int main(int argc, char *argv[])
{
const hw_module_t *hw_module;
boot_control_module_t *module;
int ret;
if (argc < 2) {
usage(stderr, argc, argv);
return EX_USAGE;
}
ret = hw_get_module("bootctrl", &hw_module);
if (ret != 0) {
fprintf(stderr, "Error getting bootctrl module.\n");
return EX_SOFTWARE;
}
module = (boot_control_module_t*) hw_module;
module->init(module);
if (strcmp(argv[1], "hal-info") == 0) {
return do_hal_info(hw_module);
} else if (strcmp(argv[1], "get-number-slots") == 0) {
return do_get_number_slots(module);
} else if (strcmp(argv[1], "get-current-slot") == 0) {
return do_get_current_slot(module);
} else if (strcmp(argv[1], "mark-boot-successful") == 0) {
return do_mark_boot_successful(module);
} else if (strcmp(argv[1], "set-active-boot-slot") == 0) {
return do_set_active_boot_slot(module, parse_slot(2, argc, argv));
} else if (strcmp(argv[1], "set-slot-as-unbootable") == 0) {
return do_set_slot_as_unbootable(module, parse_slot(2, argc, argv));
} else if (strcmp(argv[1], "is-slot-bootable") == 0) {
return do_is_slot_bootable(module, parse_slot(2, argc, argv));
} else if (strcmp(argv[1], "get-suffix") == 0) {
return do_get_suffix(module, parse_slot(2, argc, argv));
} else {
usage(stderr, argc, argv);
return EX_USAGE;
}
return 0;
}
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