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/*
* @copyright Copyright (c) 2016-2020 TOYOTA MOTOR CORPORATION.
*
* 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.
*/
/*******************************************************************************
* $Header:: $
* $Revision:: $
*******************************************************************************/
/*******************************************************************************
@file mtd_backup.c
@system
@process
@detail
******************************************************************************/
#include "system_service/nor_backup.h"
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <pthread.h>
#include <asm/unistd.h>
#include <mtd/mtd-user.h>
#define BACKUP_RETRY_CNT 3
/* Invalid Value */
#define FLSBACKUP_SEMAPHORE_INVALID (0)
#define BACKUP_SECTOR_SIZ 1024 // Secter Size
#define BACKUP_CHECK_OFFSET 16
#define BACKUP_CHECK_SIZE 12
#define BACKUP_CHECK_TEXT "MTD_BACKUPDT"
#define BACKUP_CHECK_DAT1 1 // Lower 8bit
#define BACKUP_CHECK_DAT2 2 // Upper 8bit
#define NOR_ERRLOG(fmt, args...) \
fprintf(stderr, "[ERR]%ld/%s/%d/= "fmt"\n", syscall(__NR_gettid), __func__, __LINE__, ##args)
static pthread_mutex_t g_semid_flash = PTHREAD_MUTEX_INITIALIZER; /* Semaphore ID of dram area access */
static int g_backup_init = FLSBACKUP_SEMAPHORE_INVALID;
typedef enum {
RET_WT_CHK_OK = 0,
RET_WT_ERR_OTHER,
RET_WT_DEV_ERR,
} NOR_WRITE_BLK_CHK;
typedef enum {
RET_RD_CHK_OK = 0,
RET_RD_ERR_OTHER,
RET_RD_DEV_ERR,
RET_RD_ERR_1 = -1,
RET_RD_ERR_2 = -2,
RET_RD_ERR_3 = -3,
RET_RD_ERR_4 = -4,
} NOR_READ_BLK_CHK;
typedef enum {
RET_CHK_OK = 0,
RET_CHK_TEXT_ERR,
RET_CHK_BCC_ERR,
} NOR_BLK_CHK;
typedef enum {
NOR_IDLE = 0, // 0:Read-out of block data
NOR_ORG_TEXT, // 1:OrgText Error
NOR_ORG_BCC, // 2:OrgBcc error
NOR_READ_OK, // 3:Normal read-out
NOR_READ_END // 4:end state
} NOR_R_STATE;
typedef enum {
NOR_IDEL = 0, // 0:IDEL
NOR_READ_ERR, // 1:Read Error
NOR_ORG_READ, // 2:Org Read OK
NOR_BAK_WRT, // 3:Bak Write OK
NOR_BACK_READ, // 4:Bak Read OK
NOR_ORG_WRITE, // 5:Org Write OK
NOR_WRITE_END // 6:end state
} NOR_W_STATE;
NOR_READ_BLK_CHK MtdnBackupReadSub(
const char * path_name, int i_id, int i_offset, int i_size,
void *p_buff, mtd_info_t * mtd_info, int * get_state);
NOR_WRITE_BLK_CHK MtdnBackupWriteSub(
const char * path_name, int i_id, int i_offset, int i_size,
void *p_buff, mtd_info_t * mtd_info);
int MtdnBackupWriteBase(
const char * path_name, int i_id, int i_offset, int i_size,
void *p_buff, mtd_info_t * mtd_info);
int MtdnBackupReadBase(
const char * path_name, int i_id, int i_offset, int i_size,
void *p_buff, mtd_info_t * mtd_info);
int MtdBackupInfo(const char * path_name, mtd_info_t * mtd_info); // INFO Get
NOR_BLK_CHK MtdBackupCheksumRead(char * p_buff, int erase_size, int * ret_sum); // check SUM
int MtdBackupCheksumWrite(char * p_buff, int erase_size); // check SUM
/***************************************************************************
@brief mtdn_backup_Read
@outline Read-out of specified block ID
@type Completion return type
@param[in] const char * path_name : (/dev/mtd Device)
@param[in] int i_id : ID...0~
@param[in] int i_offset : ( i_offset >= 0)
@param[in] int i_size : ( i_size > 0)
@param[in] void *p_buff : (p_buff != NULL)
@return int
@retval 0 : No error
@retval Except : Error
@usage It is Backup API of data read.
*****************************************************************************/
int mtdn_backup_Read(const char * path_name, int i_id, int i_offset, int i_size, void *p_buff ) {
int ret_status = RET_DEV_NORMAL;
if (path_name == NULL) {
NOR_ERRLOG("invalid path:%p", path_name);
return RET_DEV_ERR_PARAM;
}
if (p_buff == NULL) {
NOR_ERRLOG("invalid buf:%p", p_buff);
return RET_DEV_ERR_PARAM;
}
if (i_id < 0) {
NOR_ERRLOG("invalid id:%d", i_id);
return RET_DEV_ERR_PARAM;
}
if ((i_offset < 0) || (i_size <= 0)) {
NOR_ERRLOG("invalid size:%d offset:%d", i_size, i_offset);
return RET_DEV_ERR_PARAM;
}
if (g_backup_init == FLSBACKUP_SEMAPHORE_INVALID) { // LCOV_EXCL_BR_LINE 200: g_backup_init is static variable
pthread_mutex_init(&g_semid_flash, NULL);
g_backup_init = ~FLSBACKUP_SEMAPHORE_INVALID;
}
mtd_info_t mtd_info;
memset(&mtd_info, 0, sizeof(mtd_info_t));
ret_status = MtdBackupInfo((const char *)path_name, &mtd_info);
if (ret_status == RET_DEV_NORMAL) {
if (mtd_info.type != MTD_NORFLASH) {
NOR_ERRLOG("invalid type:%d", mtd_info.type);
ret_status = RET_DEV_ERR_PARAM;
} else {
if ((i_offset + i_size) > (int)(mtd_info.erasesize - BACKUP_CHECK_OFFSET)) {
NOR_ERRLOG("invalid size:%d offset:%d erasesize:%d", i_size, i_offset, mtd_info.erasesize);
ret_status = RET_DEV_ERR_PARAM;
}
}
if (ret_status == RET_DEV_NORMAL) {
/* Start Semaphore(flash) */
pthread_mutex_lock(&g_semid_flash);
int get_state; // Read status
ret_status = (int)MtdnBackupReadSub(path_name, i_id, i_offset, i_size,
p_buff, &mtd_info, &get_state);
/* End Semaphore(flash) */
pthread_mutex_unlock(&g_semid_flash);
}
}
if (ret_status != RET_DEV_NORMAL) {
NOR_ERRLOG("error return:%d", ret_status);
}
return ret_status;
}
/***************************************************************************
@brief mtdn_backup_Write
@outline Writing of specified block ID
@type Completion return type
@param[in] const char * path_name : (/dev/mtd Device)
@param[in] int i_id : ID...0~
@param[in] int i_offset : ( i_offset >= 0)
@param[in] int i_size : ( i_size > 0)
@param[in] void *p_buff : (p_buff != NULL)
@return int
@retval 0 : No error
@retval Except: Error
@usage It is Backup API of data read.
*****************************************************************************/
int mtdn_backup_Write(const char * path_name, int i_id, int i_offset, int i_size, void *p_buff) {
int ret_status = RET_DEV_NORMAL;
if (path_name == NULL) {
NOR_ERRLOG("invalid path:%p", path_name);
return RET_DEV_ERR_PARAM;
}
if (p_buff == NULL) {
NOR_ERRLOG("invalid buf:%p", p_buff);
return RET_DEV_ERR_PARAM;
}
if (i_id < 0) {
NOR_ERRLOG("invalid id:%d", i_id);
return RET_DEV_ERR_PARAM;
}
if ((i_offset < 0) || (i_size <= 0)) {
NOR_ERRLOG("invalid size:%d offset:%d", i_size, i_offset);
return RET_DEV_ERR_PARAM;
}
if (g_backup_init == FLSBACKUP_SEMAPHORE_INVALID) {
pthread_mutex_init(&g_semid_flash, NULL);
g_backup_init = ~FLSBACKUP_SEMAPHORE_INVALID;
}
mtd_info_t mtd_info;
memset(&mtd_info, 0, sizeof(mtd_info_t));
ret_status = MtdBackupInfo((const char *)path_name, &mtd_info);
if (ret_status == RET_DEV_NORMAL) {
if (mtd_info.type != MTD_NORFLASH) {
NOR_ERRLOG("invalid type:%d", mtd_info.type);
ret_status = RET_DEV_ERR_PARAM;
} else if (mtd_info.erasesize == 0) {
NOR_ERRLOG("invalid erasesize:%d", mtd_info.erasesize);
ret_status = RET_DEV_ERR_PARAM;
} else {
if ((i_offset + i_size) > (int)(mtd_info.erasesize - BACKUP_CHECK_OFFSET)) {
NOR_ERRLOG("invalid size:%d offset:%d erasesize:%d", i_size, i_offset, mtd_info.erasesize);
ret_status = RET_DEV_ERR_PARAM;
}
}
if (ret_status == RET_DEV_NORMAL) {
/* Start Semaphore(flash) */
pthread_mutex_lock(&g_semid_flash);
ret_status = (int)MtdnBackupWriteSub(path_name, i_id, i_offset, i_size, p_buff, &mtd_info);
/* End Semaphore(flash) */
pthread_mutex_unlock(&g_semid_flash);
}
}
if (ret_status != RET_DEV_NORMAL) {
NOR_ERRLOG("error return:%d", ret_status);
}
return ret_status;
}
/***************************************************************************
@brief MtdnBackupReadSub
@outline Read-out of specified block ID
@type Completion return type
@param[in] const char * path_name : (/dev/mtd Device)
@param[in] int i_id : ID...0~
@param[in] int i_offset : ( i_offset >= 0)
@param[in] int i_size : ( i_size > 0)
@param[in] void *p_buff : (p_buff != NULL)
@param[in] mtd_info_t * mtd_info : info
@param[in] int * get_state : 0:Rrg Normal 1:Bak Normal
@return NOR_READ_BLK_CHK
@retval RET_RD_CHK_OK : No error
@retval Except : Error
@usage It is Backup API of data read.
*****************************************************************************/
NOR_READ_BLK_CHK MtdnBackupReadSub(const char * path_name, int i_id, int i_offset, int i_size,
void *p_buff, mtd_info_t * mtd_info, int * get_state) {
NOR_READ_BLK_CHK ret_status = RET_RD_CHK_OK;
char * lp_buffer;
if (mtd_info->erasesize != 0) { // LCOV_EXCL_BR_LINE 6: double check
lp_buffer = (char *)malloc(mtd_info->erasesize);
if (lp_buffer == NULL) {
NOR_ERRLOG("malloc:%p", lp_buffer);
ret_status = RET_RD_DEV_ERR; // error
}
} else {
// LCOV_EXCL_START 8: dead code
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
NOR_ERRLOG("invalid erasesize:%d", mtd_info->erasesize);
ret_status = RET_RD_DEV_ERR; // error
// LCOV_EXCL_STOP
}
if (ret_status == RET_RD_CHK_OK) {
memset(lp_buffer, 0x00, mtd_info->erasesize);
NOR_R_STATE cycle_state = NOR_IDLE;
int block_check_mode = 0;
int ret_sum = 0;
while ((cycle_state < NOR_READ_END)
&&(ret_status == RET_RD_CHK_OK)) {
switch (cycle_state) {
case NOR_IDLE:
// Read-out of block data
if (0 != MtdnBackupReadBase((const char *)path_name, i_id, 0,
(int)mtd_info->erasesize, lp_buffer, mtd_info)) {
ret_status = RET_RD_ERR_OTHER; // Other abnormalities
} else {
NOR_BLK_CHK ret = MtdBackupCheksumRead(lp_buffer, (int)mtd_info->erasesize, (int *)&ret_sum);
if (ret == RET_CHK_TEXT_ERR) { // Text character sequence Abnormalities
cycle_state = NOR_ORG_TEXT;
} else if (ret == RET_CHK_BCC_ERR) { // (BCC)error
cycle_state = NOR_ORG_BCC;
} else {
block_check_mode = 0; // Org Normal
cycle_state = NOR_READ_OK;
}
}
break;
case NOR_ORG_TEXT: // OrgText Error
// Read-out of block data
if (0 != MtdnBackupReadBase((const char *)path_name, (i_id+1), 0,
(int)mtd_info->erasesize, lp_buffer, mtd_info)) {
// other error
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
ret_status = RET_RD_ERR_OTHER; // LCOV_EXCL_LINE 5: c API error case.
} else {
NOR_BLK_CHK ret = MtdBackupCheksumRead(lp_buffer, (int)mtd_info->erasesize,
(int *)&ret_sum); // check SUM
if (ret == RET_CHK_TEXT_ERR) { // Text character sequence Abnormalities
ret_status = RET_RD_ERR_1; // Uninitialized.
} else if (ret == RET_CHK_BCC_ERR) { // BCC error
ret_status = RET_RD_ERR_2; // write error
}
block_check_mode = 1; // Bak Normal
cycle_state = NOR_READ_OK;
}
break;
case NOR_ORG_BCC: // OrgBcc error
// Read-out of block data
if (0 != MtdnBackupReadBase((const char *)path_name, (i_id+1), 0,
(int)mtd_info->erasesize, lp_buffer, mtd_info)) {
// other error
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
ret_status = RET_RD_ERR_OTHER; // LCOV_EXCL_LINE 5: c API error case.
} else {
NOR_BLK_CHK ret = MtdBackupCheksumRead(lp_buffer, (int)mtd_info->erasesize,
(int *)&ret_sum); // check SUM
if (ret == RET_CHK_TEXT_ERR) { // Text character sequence Abnormalities
ret_status = RET_RD_ERR_3; // write error
} else if (ret == RET_CHK_BCC_ERR) { // BCC error
ret_status = RET_RD_ERR_4; // write error
}
block_check_mode = 1; // Bak Normal
cycle_state = NOR_READ_OK;
}
break;
case NOR_READ_OK: // Normal read-out
// The pickup of the read data
memcpy(p_buff, &lp_buffer[i_offset], (size_t)i_size);
cycle_state = NOR_READ_END;
break;
default:
// LCOV_EXCL_START 8: dead code
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
NOR_ERRLOG("invalid state:%d", cycle_state);
// other error
ret_status = RET_RD_ERR_OTHER;
break;
// LCOV_EXCL_STOP
}
}
*get_state = block_check_mode; // 0:OrgNormal 1:BakNormal
free(lp_buffer);
}
return ret_status; // Normal
}
static inline NOR_WRITE_BLK_CHK MtdnBackupWriteRetryCount(int *count, NOR_WRITE_BLK_CHK cur_state) {
NOR_WRITE_BLK_CHK ret_state = cur_state;
(*count)++;
if (*count > BACKUP_RETRY_CNT) {
NOR_ERRLOG("retry over!! state:%d count:%d", ret_state, *count);
ret_state = RET_WT_DEV_ERR;
}
return ret_state;
}
/***************************************************************************
@brief MtdnBackupWriteSub
@outline Writing of specified block ID
@type Completion return type
@param[in] const char * path_name : (/dev/mtd Device)
@param[in] int i_id : ID...0~
@param[in] int i_offset : ( i_offset >= 0)
@param[in] int i_size : ( i_size > 0)
@param[in] void *p_buff : (p_buff != NULL)
@param[in] mtd_info_t * mtd_info : info
@return NOR_WRITE_BLK_CHK
@retval RET_WT_CHK_OK : No error
@retval Except : Error
@usage It is Backup API of data read.
*****************************************************************************/
NOR_WRITE_BLK_CHK MtdnBackupWriteSub(const char * path_name, int i_id, int i_offset,
int i_size, void *p_buff, mtd_info_t * mtd_info) {
NOR_WRITE_BLK_CHK ret_status = RET_WT_CHK_OK;
char* lp_buffer;
lp_buffer = (char *)malloc(mtd_info->erasesize);
if (lp_buffer == NULL) {
NOR_ERRLOG("malloc:%p", lp_buffer);
ret_status = RET_WT_DEV_ERR; // error
} else {
memset(lp_buffer, 0x00, mtd_info->erasesize);
NOR_W_STATE cycle_state = NOR_IDEL;
int retry_cnt = 0;
int get_state = 0; // Read status
while ((cycle_state < NOR_WRITE_END)
&&(ret_status == RET_WT_CHK_OK)) {
switch (cycle_state) {
case NOR_IDEL: // IDLE
if (RET_RD_CHK_OK != MtdnBackupReadSub((const char *)path_name, i_id, 0,
(int)mtd_info->erasesize, lp_buffer, mtd_info, &get_state)) {
cycle_state = NOR_READ_ERR; // read error
} else {
// write data set
memcpy(&lp_buffer[i_offset], p_buff, (size_t)i_size);
if (get_state == 0) {
cycle_state = NOR_ORG_READ; // Org read Normal
} else {
// Bakread Normal
cycle_state = NOR_BACK_READ;
}
// Embedding of write-in data
memcpy(&lp_buffer[i_offset], p_buff, (size_t)i_size);
}
break;
case NOR_READ_ERR: // read error
memset((char *)lp_buffer, 0x00, mtd_info->erasesize);
// Embedding of write-in data
memcpy(&lp_buffer[i_offset], p_buff, (size_t)i_size);
cycle_state = NOR_ORG_READ; // Org read Normal
break;
case NOR_ORG_READ: // Orgread Normal
// LCOV_EXCL_BR_START 6: double check
if (0 != MtdBackupCheksumWrite(lp_buffer, (int)mtd_info->erasesize )) { // check SUM
// LCOV_EXCL_BR_STOP
// error(It does not generate.)
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
ret_status = RET_WT_DEV_ERR; // LCOV_EXCL_LINE 8: dead code
} else {
// data write
if (0 == MtdnBackupWriteBase((const char *)path_name, (i_id+1), 0,
(int)mtd_info->erasesize, lp_buffer, mtd_info)) {
cycle_state = NOR_BAK_WRT; // Bakwrite Success
retry_cnt = 0;
} else {
ret_status = MtdnBackupWriteRetryCount(&retry_cnt, ret_status);
}
}
break;
case NOR_BAK_WRT: // BakWriteSuccess
// Data write
// LCOV_EXCL_BR_START 11:unexpected branch
if (0 == MtdnBackupWriteBase((const char *)path_name, i_id, 0,
(int)mtd_info->erasesize, lp_buffer, mtd_info)) {
// LCOV_EXCL_BR_STOP
cycle_state = NOR_WRITE_END; // Normal end
} else {
// LCOV_EXCL_START 5: c API error case.
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
ret_status = MtdnBackupWriteRetryCount(&retry_cnt, ret_status);
// LCOV_EXCL_STOP
}
break;
case NOR_BACK_READ: // Bak read normal
// LCOV_EXCL_BR_START 6: double check
if (0 != MtdBackupCheksumWrite(lp_buffer, (int)mtd_info->erasesize )) { // check SUM
// LCOV_EXCL_BR_STOP
// Retry over
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
ret_status = RET_WT_DEV_ERR; // LCOV_EXCL_LINE 8: dead code
} else {
// data write
if (0 == MtdnBackupWriteBase((const char *)path_name, i_id, 0,
(int)mtd_info->erasesize, lp_buffer, mtd_info)) {
// Org write Succses
cycle_state = NOR_ORG_WRITE;
retry_cnt = 0;
} else {
// LCOV_EXCL_START 5: c API error case.
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
ret_status = MtdnBackupWriteRetryCount(&retry_cnt, ret_status);
// LCOV_EXCL_STOP
}
}
break;
case NOR_ORG_WRITE: // Org write Succses
// data write
if (0 == MtdnBackupWriteBase((const char *)path_name, (i_id+1), 0,
(int)mtd_info->erasesize, lp_buffer, mtd_info)) {
// Normal end
cycle_state = NOR_WRITE_END;
} else {
// LCOV_EXCL_START 5: c API error case.
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
ret_status = MtdnBackupWriteRetryCount(&retry_cnt, ret_status);
// LCOV_EXCL_STOP
}
break;
default:
// LCOV_EXCL_START 8: dead code
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
NOR_ERRLOG("invalid state:%d", cycle_state);
// other error
ret_status = RET_WT_ERR_OTHER;
break;
// LCOV_EXCL_STOP
}
}
free(lp_buffer);
}
return ret_status; // Normal
}
/***************************************************************************
@brief MtdnBackupReadBase
@outline Read-out of specified block ID
@type Completion return type
@param[in] const char * path_name : (/dev/mtd Device)
@param[in] int i_id : ID...0~
@param[in] int i_offset : ( i_offset >= 0)
@param[in] int i_size : ( i_size > 0)
@param[in] void *p_buff : (p_buff != NULL)
@param[in] mtd_info_t * mtd_info :
@return int
@retval 0 : No error
@retval Except : Error
@usage It is Backup API of data read.
*****************************************************************************/
int MtdnBackupReadBase(const char * path_name, int i_id, int i_offset,
int i_size, void *p_buff, mtd_info_t * mtd_info) {
int ret_status = RET_DEV_NORMAL;
int mtd_fd = open(path_name, O_RDONLY|O_CLOEXEC);
// LCOV_EXCL_BR_START 5:It's impossible to mock open() function,so this line can not be passed.
if (mtd_fd == -1) {
// LCOV_EXCL_BR_STOP
// LCOV_EXCL_START 5:It's impossible to mock open() function,so this line can not be passed.
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
NOR_ERRLOG("open(%s):%s", path_name, strerror(errno));
ret_status = RET_DEV_ERROR;
// LCOV_EXCL_STOP
} else {
int seek_top = i_id * (int)mtd_info->erasesize + i_offset;
int sector_size = BACKUP_SECTOR_SIZ;
int block_size = (int)mtd_info->erasesize / sector_size; // Division number
int llpi;
int buff_top = 0;
int get_size = i_size;
char * work_buff = (char *)p_buff;
ssize_t read_size;
// It reads several sector minutes.
for (llpi=0; llpi < block_size; llpi++) { // LCOV_EXCL_BR_LINE 11:unexpected branch
// It moves to a head.
if (-1 == (off_t)lseek(mtd_fd, seek_top, SEEK_SET)) {
NOR_ERRLOG("lseek():%s", strerror(errno));
ret_status = RET_DEV_ERROR;
break;
}
if (get_size >= sector_size) { // LCOV_EXCL_BR_LINE 6:double check
read_size = read(mtd_fd, &work_buff[buff_top], (size_t)sector_size);
if (read_size < 0) {
NOR_ERRLOG("read():%zd %s", read_size, strerror(errno));
ret_status = RET_DEV_ERROR;
break;
}
get_size -= sector_size;
if (get_size <= 0) {
break;
}
} else {
// LCOV_EXCL_START 8: dead code
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
read_size = read(mtd_fd, &work_buff[buff_top], (size_t)get_size);
if (read_size < 0) {
NOR_ERRLOG("read():%zd %s", read_size, strerror(errno));
ret_status = RET_DEV_ERROR;
break;
}
break;
// LCOV_EXCL_STOP
}
seek_top += (int)read_size;
buff_top += (int)read_size;
}
// LCOV_EXCL_BR_START 5:It's impossible to mock close() function,so this line can not be passed.
if (0 != close(mtd_fd)) {
// LCOV_EXCL_BR_STOP
// LCOV_EXCL_START 5:It's impossible to mock close() function,so this line can not be passed.
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
NOR_ERRLOG("close():%s", strerror(errno));
ret_status = RET_DEV_ERROR;
// LCOV_EXCL_STOP
}
}
return ret_status;
}
/***************************************************************************
@brief MtdnBackupWriteBase
@outline Writing of specified block ID
@type Completion return type
@param[in] const char * path_name : (/dev/mtd Device)
@param[in] int i_id : ID...0~
@param[in] int i_offset : ( i_offset >= 0)
@param[in] int i_size : ( i_size > 0)
@param[in] void *p_buff : (p_buff != NULL)
@param[in] mtd_info_t * mtd_info :
@return int
@retval 0 : No error
@retval Except : Error
@usage It is Backup API of data read.
*****************************************************************************/
int MtdnBackupWriteBase(const char * path_name, int i_id, int i_offset,
int i_size, void *p_buff, mtd_info_t * mtd_info) {
int ret_status = RET_DEV_NORMAL;
int mtd_fd = open(path_name, O_RDWR|O_CLOEXEC);
if (mtd_fd == -1) {
NOR_ERRLOG("open(%s):%s", path_name, strerror(errno));
ret_status = RET_DEV_ERROR;
} else {
erase_info_t s_mtd_erase;
s_mtd_erase.start = (__u32)i_id * mtd_info->erasesize;
s_mtd_erase.length = mtd_info->erasesize;
// erase
if (ioctl(mtd_fd, MEMERASE, &s_mtd_erase) < 0) {
NOR_ERRLOG("ioctl(MEMERASE):%s", strerror(errno));
ret_status = RET_DEV_ERROR;
} else {
// write
int seek_top = i_id * (int)mtd_info->erasesize + i_offset;
int sector_size = BACKUP_SECTOR_SIZ; //
int block_size = (int)mtd_info->erasesize/sector_size;
int llpi;
int buff_top = 0;
int put_size = i_size;
char * work_buff = (char *)p_buff;
ssize_t write_size;
for (llpi=0; llpi < block_size; llpi++) { // LCOV_EXCL_BR_LINE 11:unexpected branch
if (-1 == (off_t)lseek(mtd_fd, seek_top, SEEK_SET)) {
NOR_ERRLOG("lseek():%s", strerror(errno));
ret_status = RET_DEV_ERROR;
break;
}
if (put_size >= sector_size) { // LCOV_EXCL_BR_LINE 6:double check
write_size = write(mtd_fd, &work_buff[buff_top], (size_t)sector_size);
if (write_size < 0) {
NOR_ERRLOG("write():%zd %s", write_size, strerror(errno));
ret_status = RET_DEV_ERROR;
break;
}
put_size -= sector_size;
if (put_size <= 0) {
break;
}
} else {
// LCOV_EXCL_START 8: dead code
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
write_size = write(mtd_fd, &work_buff[buff_top], (size_t)put_size);
if (write_size < 0) {
NOR_ERRLOG("write():%zd %s", write_size, strerror(errno));
ret_status = RET_DEV_ERROR;
break;
}
break;
// LCOV_EXCL_STOP
}
seek_top += (int)write_size;
buff_top += (int)write_size;
}
}
// LCOV_EXCL_BR_START 5:It's impossible to mock close() function,so this line can not be passed.
if (0 != close(mtd_fd)) {
// LCOV_EXCL_BR_STOP
// LCOV_EXCL_START 5:It's impossible to mock close() function,so this line can not be passed.
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
NOR_ERRLOG("close():%s", strerror(errno));
ret_status = RET_DEV_ERROR;
// LCOV_EXCL_STOP
}
}
return ret_status;
}
/***************************************************************************
int backup_cheksum_read(char * p_buff, int erase_size ,int * ret_sum)
* A text character sequence and a sum value are checked.
IN: char * p_buff ...top address
int erase_size ...erase size
int * ret_sum ...return sum
OUT: NOR_BLK_CHK RET_CHK_OK:Normal
RET_CHK_TEXT_ERR:test error
RET_CHK_BCC_ERR:sum error Except:other error
Remarks:
*****************************************************************************/
NOR_BLK_CHK MtdBackupCheksumRead(char * p_buff, int erase_size, int * ret_sum) {
if (erase_size > BACKUP_CHECK_OFFSET) { // LCOV_EXCL_BR_LINE 6: double check
// The check of the compatibility of block data
if (0 != memcmp(&p_buff[(erase_size-BACKUP_CHECK_OFFSET)], BACKUP_CHECK_TEXT, BACKUP_CHECK_SIZE)) {
char tmp[BACKUP_CHECK_SIZE + 1];
memcpy(tmp, &p_buff[(erase_size-BACKUP_CHECK_OFFSET)], BACKUP_CHECK_SIZE);
tmp[BACKUP_CHECK_SIZE] = '\0';
NOR_ERRLOG("invalid check_text:%s", tmp);
return RET_CHK_TEXT_ERR;
}
// The check of the compatibility of block data
int llpi;
int get_sum;
int work_sum = 0;
get_sum = ((int)p_buff[(erase_size-BACKUP_CHECK_DAT2)] & 0xff) +
(((int)p_buff[(erase_size-BACKUP_CHECK_DAT1)]) << 8 & 0xff00);
for (llpi=0; llpi < (erase_size-BACKUP_CHECK_OFFSET); llpi++) {
work_sum += p_buff[llpi];
}
work_sum = (work_sum & 0xffff);
if (work_sum != get_sum) {
NOR_ERRLOG("invalid checksum: work:%d get:%d", work_sum, get_sum);
return RET_CHK_BCC_ERR; // checksum error
}
if (ret_sum != NULL) { // LCOV_EXCL_BR_LINE 6: double check
*ret_sum = work_sum; // chesum Storing
}
} else {
// LCOV_EXCL_START 8: dead code
AGL_ASSERT_NOT_TESTED(); // LCOV_EXCL_LINE 200: test assert
NOR_ERRLOG("invalid erase_size:%d", erase_size);
// checksum error
return RET_CHK_BCC_ERR;
// LCOV_EXCL_STOP
}
return RET_CHK_OK;
}
/***************************************************************************
int backup_cheksum_write(char * p_buff, int erase_size )
* A text character sequence and a sum value are written in a buffer.
IN: char * p_buff ...top address
int erase_size ...erase size
OUT: int 0:normal Except:error
Remarks:
*****************************************************************************/
int MtdBackupCheksumWrite(char * p_buff, int erase_size ) {
int sum_add = 0;
if (erase_size > BACKUP_CHECK_OFFSET) { // LCOV_EXCL_BR_LINE 11:unexpected branch
int ret_status;
// The check of the compatibility of block data
ret_status = memcmp(&p_buff[(erase_size-BACKUP_CHECK_OFFSET)], BACKUP_CHECK_TEXT, BACKUP_CHECK_SIZE);
if (ret_status != 0) {
memcpy(&p_buff[(erase_size-BACKUP_CHECK_OFFSET)], BACKUP_CHECK_TEXT, BACKUP_CHECK_SIZE);
}
int llpi;
for (llpi=0; llpi < (erase_size-BACKUP_CHECK_OFFSET); llpi++) {
sum_add += p_buff[llpi];
}
}
p_buff[(erase_size-BACKUP_CHECK_DAT2)] = (char)(sum_add & 0xff);
p_buff[(erase_size-BACKUP_CHECK_DAT1)] = (char)((sum_add>>8) & 0xff);
return RET_DEV_NORMAL;
}
/***************************************************************************
@brief MtdBackupInfo( mtd_info_t * mtd_info)
@outline The information to obtain is obtained.
@type Completion return type
@param[in] mtd_info_t * mtd_info
@return int
@retval 0 : No error
@retval Except : Error
@usage It is Backup API of data read.
*****************************************************************************/
int MtdBackupInfo(const char * path_name, mtd_info_t * mtd_info) {
int ret_status = RET_DEV_NORMAL;
int mtd_fd = open(path_name, O_RDONLY|O_CLOEXEC);
if (mtd_fd == -1) {
NOR_ERRLOG("open(%s):%s", path_name, strerror(errno));
ret_status = RET_DEV_ERROR;
} else {
// device control mtdchar_ioctl of mtdchar.c
if (ioctl(mtd_fd, MEMGETINFO, mtd_info) < 0) {
NOR_ERRLOG("ioctl(MEMGETINFO):%s", strerror(errno));
ret_status = RET_DEV_ERROR;
}
if (0 != close(mtd_fd)) {
NOR_ERRLOG("close():%s", strerror(errno));
ret_status = RET_DEV_ERROR;
}
}
return ret_status;
}
/**************************************************************
End Of Files
**************************************************************/
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