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ff_rename() [FreeRTOS+FAT Standard API Reference]

ff_stdio.h
int ff_rename( const char *pcOldName, const char *pcNewName );
  Moves a file. A file can be moved across directories, but not across file systems. Parameters:
pcOldName A pointer to a standard null terminated C string that holds the name of the source file. The string can contain a relative path.
pcNewName A pointer to a standard null terminated C string that holds the name of the destination file. The string can contain a relative path.
Returns: If the file is moved successfully then zero is returned. If the file could not be moved then -1 is returned and the task’s errno is set to indicate the reason. A task can obtain its errno value using the stdioGET_ERRNO() API function.
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