| class CMountCB::MFileExtendedInterface |
CMountCB::MFileExtendedInterface interface provides extended interface for CMountCB to read a specified section of large file (size greater than 2GB - 1).
The interface could be retrieved by calling CMountCB::GetInterface() with EFileExtendedInterface as an argument.
Sub classes of CMountCB who does support large file access will need to multiple-inherit with this class and implement the interface. The implementation of the interface will be retrieved via GetInterface() and provided to user by non-virtual APIs to avoid breaking binary compatibility.
NOTE: Do not try to delete CMountCB::MFileExtendedInterface interface pointer!
| Public Member Functions | |
|---|---|
| void | ReadSection64L(const TDesC &, TInt64, TAny *, TInt, const RMessagePtr2 &) |
| void | ReadSection64L | ( | const TDesC & | aName, |
| TInt64 | aPos, | |||
| TAny * | aTrg, | |||
| TInt | aLength, | |||
| const RMessagePtr2 & | aMessage | |||
| ) | [pure virtual] | |||
Reads a specified section of the file, regardless of the file's lock state.
The function should leave with a suitable error code if it cannot complete successfully for any reason.
This function should be implemented in file systems supporting files of size greater than 2GB - 1.
| const TDesC & aName | A reference to a descriptor containing the full name of the file to be read from |
| TInt64 aPos | The byte position to start reading from. |
| TAny * aTrg | A pointer to the buffer into which data is to be read. |
| TInt aLength | The length of data to be read, in bytes. |
| const RMessagePtr2 & aMessage |
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