~~NOTOC~~
[[use_exported_control_api]] > [[BS2_GetLogSmallBlobFromDir]]

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===== BS2_GetLogSmallBlobFromDir=====
[+ 2.6.4] Gets certain amount of logs based on the event mask from USB exported data in an efficient way.  \\
The difference from [[BS2_GetLogBlobFromDir]] which is using [[Log_Management_API#BS2EventBlob]] is that the parameter imageObj in BS2EventSmallBlob is changed to pointer for memory efficiency. \\
Except this, everything is the same.

==== Declaration ====
<code cpp>
#include "BS_API.h"

int BS2_GetLogSmallBlobFromDir(void* context, const char* szDir, uint16_t eventMask, BS2_EVENT_ID eventId, uint32_t amount, BS2EventSmallBlob** logsObj, uint32_t* numLog);
</code>

<callout type="info">
[[Log_Management_API#BS2EventSmallBlob|See BS2EventSmallBlob Structure]]
</callout>

==== Parameter ====
  * [In] ''//context//'' : Context
  * [In] ''//szDir//'' : Data storage path
  * [In] ''//eventMask//'' : event mask
  * [In] ''//eventId//'' : Log record ID, retireves from the first record if it is 0
  * [In] ''//amount//'' : Maximum log amount, retrieves all after eventID if it is 0
  * [Out] ''//logsObj//'' : Pointer of storing the log record address
  * [Out] ''//numLog//'' : The number of log records
<WRAP indent>
<WRAP info>
**NOTE**\\
The logsObj variable needs to return the memory to the system by the [[BS2_ReleaseObject]] function after being used.
</WRAP>
</WRAP>
==== Return Value ====
If successfully done, ''BS_SDK_SUCCESS'' will be returned. \\
If there is an error, the corresponding error code will be returned. 
==== See Also ====
[[BS2_AllocateUsbContext]]\\ [[BS2_ReleaseUsbContext]]\\ [[BS2_GetUserDatabaseInfoFromDir]]\\ [[BS2_GetUserListFromDir]]\\ [[BS2_GetUserInfosFromDir]]\\ [[BS2_GetUserDatasFromDir]]\\ [[BS2_GetUserInfosExFromDir]]\\ [[BS2_GetUserDatasExFromDir]]\\ [[BS2_GetLogFromDir]]\\ [[BS2_GetFilteredLogFromDir]]\\ [[BS2_GetLogBlobFromDir]]