329 lines
8.2 KiB
C
329 lines
8.2 KiB
C
|
|
|||
|
|
#define LOG_TAG "misc_rw"
|
|||
|
|
|
|||
|
|
#include <errno.h>
|
|||
|
|
#include <stdio.h>
|
|||
|
|
#include <string.h>
|
|||
|
|
#include <utils/Log.h>
|
|||
|
|
#include <sys/stat.h>
|
|||
|
|
#include <sys/types.h>
|
|||
|
|
|
|||
|
|
|
|||
|
|
static const char *MISC_DEVICE = "/dev/block/by-name/misc";
|
|||
|
|
|
|||
|
|
#define LOGE(...) fprintf(stderr, "E:" __VA_ARGS__)
|
|||
|
|
|
|||
|
|
/* Bootloader Message
|
|||
|
|
*/
|
|||
|
|
struct bootloader_message {
|
|||
|
|
char command[32];
|
|||
|
|
char status[32];
|
|||
|
|
char recovery[1024];
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
|
|||
|
|
// ------------------------------------
|
|||
|
|
// for misc partitions on block devices
|
|||
|
|
// ------------------------------------
|
|||
|
|
|
|||
|
|
static int get_bootloader_message_block(struct bootloader_message *out,
|
|||
|
|
const char* device) {
|
|||
|
|
FILE* f = fopen(device, "rb");
|
|||
|
|
if (f == NULL) {
|
|||
|
|
LOGE("Can't open %s\n(%s)\n", device, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
struct bootloader_message temp;
|
|||
|
|
int count = fread(&temp, sizeof(temp), 1, f);
|
|||
|
|
if (count != 1) {
|
|||
|
|
LOGE("Failed reading %s\n(%s)\n", device, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
if (fclose(f) != 0) {
|
|||
|
|
LOGE("Failed closing %s\n(%s)\n", device, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
memcpy(out, &temp, sizeof(temp));
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static int set_bootloader_message_block(const struct bootloader_message *in,
|
|||
|
|
const char* device) {
|
|||
|
|
LOGE(" the open device is %s\n",device);
|
|||
|
|
FILE* f = fopen(device, "wb");
|
|||
|
|
if (f == NULL) {
|
|||
|
|
LOGE("Can't open %s\n(%s)\n", device, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
int count = fwrite(in, sizeof(*in), 1, f);
|
|||
|
|
if (count != 1) {
|
|||
|
|
LOGE("Failed writing %s\n(%s)\n", device, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
fsync(f);
|
|||
|
|
fsync(fileno(f));
|
|||
|
|
if (fclose(f) != 0) {
|
|||
|
|
LOGE("Failed closing %s\n(%s)\n", device, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* force the next boot to recovery/efex */
|
|||
|
|
int write_misc(char *reason){
|
|||
|
|
struct bootloader_message boot, temp;
|
|||
|
|
char device[32] = {0};
|
|||
|
|
memset(&boot, 0, sizeof(boot));
|
|||
|
|
if(!strcmp("recovery",reason)){
|
|||
|
|
reason = "boot-recovery";
|
|||
|
|
}
|
|||
|
|
// strcpy(boot.command, "boot-recovery");
|
|||
|
|
strcpy(boot.command,reason);
|
|||
|
|
sprintf(device,"%s",MISC_DEVICE);
|
|||
|
|
if (set_bootloader_message_block(&boot, device) )
|
|||
|
|
return -1;
|
|||
|
|
|
|||
|
|
//read for compare
|
|||
|
|
memset(&temp, 0, sizeof(temp));
|
|||
|
|
if (get_bootloader_message_block(&temp, device))
|
|||
|
|
return -1;
|
|||
|
|
|
|||
|
|
if( memcmp(&boot, &temp, sizeof(boot)) )
|
|||
|
|
return -1;
|
|||
|
|
|
|||
|
|
return 0;
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* The recovery tool communicates with the main system through /cache files.
|
|||
|
|
* /cache/recovery/command - INPUT - command line for tool, one arg per line
|
|||
|
|
* /cache/recovery/log - OUTPUT - combined log file from recovery run(s)
|
|||
|
|
* /cache/recovery/intent - OUTPUT - intent that was passed in
|
|||
|
|
*
|
|||
|
|
* The arguments which may be supplied in the recovery.command file:
|
|||
|
|
* --send_intent=anystring - write the text out to recovery.intent
|
|||
|
|
* --update_package=path - verify install an OTA package file
|
|||
|
|
* --wipe_data - erase user data (and cache), then reboot
|
|||
|
|
* --wipe_cache - wipe cache (but not user data), then reboot
|
|||
|
|
* --set_encrypted_filesystem=on|off - enables / diasables encrypted fs
|
|||
|
|
*/
|
|||
|
|
static const char *COMMAND_FILE = "/cache/recovery/command";
|
|||
|
|
|
|||
|
|
int go_update_package(const char *path){
|
|||
|
|
|
|||
|
|
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#define CRASH_MSG_MAGIC 0xCAA58FAC
|
|||
|
|
#define CRASH_MSG_OFFSET 1048576
|
|||
|
|
#define MAX_CRASH_COUNT 3
|
|||
|
|
|
|||
|
|
struct crash_message {
|
|||
|
|
unsigned int magic_s;
|
|||
|
|
int count;
|
|||
|
|
char reason[512];
|
|||
|
|
int ever_wiped;
|
|||
|
|
unsigned int magic_e;
|
|||
|
|
// int crash_hist[MAX_CRASH_COUNT + 1];
|
|||
|
|
// int mount_failed;
|
|||
|
|
// int remounted_ro;
|
|||
|
|
// int critical_crashed;
|
|||
|
|
// int normal;
|
|||
|
|
int unknown;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
static int get_crash_message(struct crash_message *out,
|
|||
|
|
const char* device) {
|
|||
|
|
FILE* f = fopen(device, "rb");
|
|||
|
|
if (f == NULL) {
|
|||
|
|
LOGE("Can't open %s\n(%s)\n", device, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
struct crash_message temp;
|
|||
|
|
fseek(f, CRASH_MSG_OFFSET, SEEK_SET);
|
|||
|
|
int count = fread(&temp, sizeof(temp), 1, f);
|
|||
|
|
if (count != 1) {
|
|||
|
|
LOGE("Failed reading %s\n(%s)\n", device, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
if (fclose(f) != 0) {
|
|||
|
|
LOGE("Failed closing %s\n(%s)\n", device, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
memcpy(out, &temp, sizeof(temp));
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static int set_crash_message(const struct crash_message *in,
|
|||
|
|
const char* device) {
|
|||
|
|
FILE* f = fopen(device, "wb");
|
|||
|
|
if (f == NULL) {
|
|||
|
|
LOGE("Can't open %s\n(%s)\n", device, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
fseek(f, CRASH_MSG_OFFSET, SEEK_SET);
|
|||
|
|
int count = fwrite(in, sizeof(*in), 1, f);
|
|||
|
|
if (count != 1) {
|
|||
|
|
LOGE("Failed writing %s\n(%s)\n", device, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
fflush(f);
|
|||
|
|
fsync(fileno(f));
|
|||
|
|
if (fclose(f) != 0) {
|
|||
|
|
LOGE("Failed closing %s\n(%s)\n", device, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static const char *RECOV_DIR = "/cache/recovery";
|
|||
|
|
|
|||
|
|
int write_command_file(const char* command)
|
|||
|
|
{
|
|||
|
|
struct stat st;
|
|||
|
|
LOGE("%s: %s", __FUNCTION__, command);
|
|||
|
|
|
|||
|
|
if(stat(RECOV_DIR, &st) != 0) {
|
|||
|
|
if(mkdir(RECOV_DIR, 0777) < 0){
|
|||
|
|
LOGE("Can't mkdir %s\n(%s)\n", RECOV_DIR, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
remove(COMMAND_FILE);
|
|||
|
|
|
|||
|
|
FILE* f = fopen(COMMAND_FILE, "w");
|
|||
|
|
if (f == NULL) {
|
|||
|
|
LOGE("Can't open %s\n(%s)\n", COMMAND_FILE, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
int count = fwrite(command, strlen(command), 1, f);
|
|||
|
|
|
|||
|
|
if (count != 1) {
|
|||
|
|
LOGE("Failed writing %s\n(%s)\n", COMMAND_FILE, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
fflush(f);
|
|||
|
|
fsync(fileno(f));
|
|||
|
|
if (fclose(f) != 0) {
|
|||
|
|
LOGE("Failed closing %s\n(%s)\n", COMMAND_FILE, strerror(errno));
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
*返回值：
|
|||
|
|
* 0 : 只做reboot
|
|||
|
|
* -1: 访问misc分区出错，不做操作
|
|||
|
|
* 1 : 连续出错次数达到上限
|
|||
|
|
* 2 : 已经恢复出厂设置，但仍然出错，不做操作
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
int set_misc_crash(const char *reason, const char *error_msg)
|
|||
|
|
{
|
|||
|
|
struct crash_message crash, temp;
|
|||
|
|
int ret = 0;
|
|||
|
|
|
|||
|
|
memset(&crash, 0, sizeof(crash));
|
|||
|
|
if (get_crash_message(&crash, MISC_DEVICE)) {
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (crash.magic_s == CRASH_MSG_MAGIC && crash.magic_e == CRASH_MSG_MAGIC) {
|
|||
|
|
if (crash.ever_wiped > 0)
|
|||
|
|
return 2;
|
|||
|
|
if (crash.count < 0) {
|
|||
|
|
crash.count = 0;
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
crash.magic_s = crash.magic_e = CRASH_MSG_MAGIC;
|
|||
|
|
crash.count = 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (crash.count < MAX_CRASH_COUNT - 1) {
|
|||
|
|
++crash.count;
|
|||
|
|
} else {
|
|||
|
|
ret = 1;
|
|||
|
|
crash.ever_wiped = 1;
|
|||
|
|
crash.count = 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
memset(crash.reason, 0, sizeof(crash.reason));
|
|||
|
|
strncpy(crash.reason, error_msg, sizeof(crash.reason));
|
|||
|
|
|
|||
|
|
if (set_crash_message(&crash, MISC_DEVICE) < 0)
|
|||
|
|
return -1;
|
|||
|
|
|
|||
|
|
//read for compare
|
|||
|
|
memset(&temp, 0, sizeof(temp));
|
|||
|
|
if (get_crash_message(&temp, MISC_DEVICE) < 0)
|
|||
|
|
return -1;
|
|||
|
|
|
|||
|
|
if (memcmp(&crash, &temp, sizeof(crash)))
|
|||
|
|
return -1;
|
|||
|
|
|
|||
|
|
if (ret && reason != NULL) {
|
|||
|
|
return 1;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return ret;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
int clear_crash_message()
|
|||
|
|
{
|
|||
|
|
struct crash_message crash, temp;
|
|||
|
|
|
|||
|
|
memset(&temp, 0, sizeof(temp));
|
|||
|
|
if (get_crash_message(&temp, MISC_DEVICE) == 0) {
|
|||
|
|
if (temp.magic_s != CRASH_MSG_MAGIC || temp.magic_e != CRASH_MSG_MAGIC)
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
memset(&crash, 0, sizeof(crash));
|
|||
|
|
if (set_crash_message(&crash, MISC_DEVICE) < 0)
|
|||
|
|
return -1;
|
|||
|
|
|
|||
|
|
//read for compare
|
|||
|
|
memset(&temp, 0, sizeof(temp));
|
|||
|
|
if (get_crash_message(&temp, MISC_DEVICE) < 0)
|
|||
|
|
return -1;
|
|||
|
|
|
|||
|
|
if (memcmp(&crash, &temp, sizeof(crash)))
|
|||
|
|
return -1;
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
*返回值：
|
|||
|
|
* -1: 检测不到上次启动的crash信息（包括访问misc分区出错）
|
|||
|
|
* 0 : 上一次运行过程中系统有出错
|
|||
|
|
* 1 : 已经进行过恢复出厂设置
|
|||
|
|
* 2 : 设置恢复出厂设置命令失败
|
|||
|
|
*/
|
|||
|
|
int get_last_crash_reason(char *reason, int len)
|
|||
|
|
{
|
|||
|
|
struct crash_message msg;
|
|||
|
|
int ret = 0;
|
|||
|
|
|
|||
|
|
memset(&msg, 0, sizeof(msg));
|
|||
|
|
if (get_crash_message(&msg, MISC_DEVICE) < 0)
|
|||
|
|
return -1;
|
|||
|
|
|
|||
|
|
if (msg.magic_s != CRASH_MSG_MAGIC || msg.magic_e != CRASH_MSG_MAGIC) {
|
|||
|
|
return -1;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (msg.ever_wiped == 1) {
|
|||
|
|
msg.ever_wiped = 2;
|
|||
|
|
set_crash_message(&msg, MISC_DEVICE);
|
|||
|
|
ret = 1;
|
|||
|
|
} else if (msg.ever_wiped == 2) {
|
|||
|
|
ret = 2;
|
|||
|
|
}
|
|||
|
|
strncpy(reason, msg.reason, len);
|
|||
|
|
return ret;
|
|||
|
|
}
|