CfgMgr::Reset

Description

Deletes persistent data based on parameters.

Prototype

• Deleting persistent data based on a single parameter

  uint32_t CfgMgr::Reset(const std::string &kParam,const bool isSync = false)

• Deleting persistent data based on multiple parameters

  uint32_t CfgMgr::Reset(const std::vector<std::string> &kParam,const bool isSync = false)

Function Security Level

ASIL-D

Parameters

• Deleting persistent data based on a single parameter

  Parameter	Input/Output	Description
  kParam	Input	Parameter key, which must be complete.
  isSync	Input	Whether to write persistent files synchronously. The default value is false.

• Deleting persistent data based on multiple parameters

  Parameter	Input/Output	Description
  kParam	Input	Parameter key, which must be complete. Multiple keys can be input.
  isSync	Input	Whether to write persistent files synchronously. The default value is false.

Returns

The return value is of the uint32_t type. If the operation is successful, CFGMGR_SUCCESS is returned. If the operation fails, an error code is returned.

Usage

After SELinux permission control is enabled, non-privileged processes can be called only after the read and write permissions on dp:/res/cfgmgr/mgmt are configured.

Precautions

• If the key is present in the basic YAML file , the default key is used. (It is not persistent and will be modified in the memory.) Otherwise, the key will be removed.
• If all persistent data is deleted after the reset, persistent files are deleted. If no persistent data is available during the restart, the system attempts to inherit persistent data by version. If the inheritance fails, an alarm is generated.
• If the key does not exist in the environment, a success message is returned.