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update src/fdb_kvdb.c.

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Fix address access out of bounds
This commit is contained in:
timchen
2020-06-18 09:00:34 +08:00
committed by Gitee
parent 40ce133fbc
commit 3bd9e35c36
1 changed files with 4 additions and 4 deletions
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src/fdb_kvdb.c
+4 -4
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@@ -252,7 +252,7 @@ static uint32_t find_next_kv_addr(fdb_kvdb_t db, uint32_t start, uint32_t end)
}
#endif /* FDB_KV_USING_CACHE */
for (; start < end; start += (sizeof(buf) - sizeof(uint32_t))) {
for (; start < end && start + sizeof(buf) < end; start += (sizeof(buf) - sizeof(uint32_t))) {
_fdb_flash_read((fdb_db_t)db, start, (uint32_t *) buf, sizeof(buf));
for (i = 0; i < sizeof(buf) - sizeof(uint32_t) && start + i < end; i++) {
#ifndef FDB_BIG_ENDIAN /* Little Endian Order */
@@ -293,7 +293,7 @@ static uint32_t get_next_kv_addr(fdb_kvdb_t db, kv_sec_info_t sector, fdb_kv_t p
addr = find_next_kv_addr(db, addr, sector->addr + db_sec_size(db) - SECTOR_HDR_DATA_SIZE);
if (addr > sector->addr + db_sec_size(db) || pre_kv->len == 0) {
//TODO 扇区连续模式
//TODO 扇区连续模式
return FAILED_ADDR;
}
} else {
@@ -328,7 +328,7 @@ static fdb_err_t read_kv(fdb_kvdb_t db, fdb_kv_t kv)
kv->crc_is_ok = false;
return FDB_READ_ERR;
} else if (kv->len > db_sec_size(db) - SECTOR_HDR_DATA_SIZE && kv->len < db_part_size(db)) {
//TODO 扇区连续模式，或者写入长度没有写入完整
//TODO 扇区连续模式，或者写入长度没有写入完整
FDB_ASSERT(0);
}
@@ -1468,7 +1468,7 @@ static bool check_and_recovery_kv_cb(fdb_kv_t kv, void *arg1, void *arg2)
} else if (kv->status == FDB_KV_PRE_WRITE) {
uint8_t status_table[KV_STATUS_TABLE_SIZE];
/* the KV has not write finish, change the status to error */
//TODO 绘制异常处理的状态装换图
//TODO 绘制异常处理的状态装换图
_fdb_write_status((fdb_db_t)db, kv->addr.start, status_table, FDB_KV_STATUS_NUM, FDB_KV_ERR_HDR);
return true;
}