ssgx::filesystem_t::ProtectedFileWriter Class Reference

A ProtectedFileWriter for writing to the Intel SGX Protected File System. More...

#include <ssgx_filesystem_t.h>

Public Member Functions
	ProtectedFileWriter (const ProtectedFileWriter &)=delete
ProtectedFileWriter &	operator= (const ProtectedFileWriter &)=delete
	ProtectedFileWriter (const char *file_name, FileMode file_mode=FileMode::CreateNew, uint16_t key_policy=SGX_KEYPOLICY_MRENCLAVE)
	Opens a file for writing.
	~ProtectedFileWriter ()
void	Write (const void *data, size_t size) const
	Writes data to the file.
void	Flush () const
	Flushes any buffered data to disk.
void	Close ()
	Closes the file.

Detailed Description

A ProtectedFileWriter for writing to the Intel SGX Protected File System.

Constructor & Destructor Documentation

ProtectedFileWriter() [1/2]

ssgx::filesystem_t::ProtectedFileWriter::ProtectedFileWriter ( const ProtectedFileWriter & )

delete

ProtectedFileWriter() [2/2]

ssgx::filesystem_t::ProtectedFileWriter::ProtectedFileWriter ( const char * file_name, FileMode file_mode = FileMode::CreateNew, uint16_t key_policy = SGX_KEYPOLICY_MRENCLAVE )

explicit

Opens a file for writing.

Parameters

file_name	The name of the file to create or overwrite (must be a valid, non-null C-string).
file_mode	One of FileMode to identify the writing operation mode.
key_policy	The key policy for sealing operations (default: SGX_KEYPOLICY_MRENCLAVE).

Exceptions

FileSystemException

If the file cannot be opened.

~ProtectedFileWriter()

ssgx::filesystem_t::ProtectedFileWriter::~ProtectedFileWriter

(

)

Member Function Documentation

Close()

void ssgx::filesystem_t::ProtectedFileWriter::Close

(

)

Closes the file.

Exceptions

FileSystemException

If closing fails.

Flush()

void ssgx::filesystem_t::ProtectedFileWriter::Flush

(

)

const

Flushes any buffered data to disk.

Exceptions

FileSystemException

If flushing fails.

operator=()

ProtectedFileWriter & ssgx::filesystem_t::ProtectedFileWriter::operator= ( const ProtectedFileWriter & )

delete

Write()

void ssgx::filesystem_t::ProtectedFileWriter::Write	(	const void *	data,
		size_t	size ) const

Writes data to the file.

Parameters

data	Pointer to the data to be written (must not be null).
size	Size of the data in bytes (must be > 0). For small files, the recommended size is 4KB; For big files, the recommended size is 64KB; Don't set size >= 256KB.

Exceptions

FileSystemException

If writing fails.

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The documentation for this class was generated from the following file:

• ssgx_filesystem_t.h