crashpad::FileReader Class Reference

A file reader implementation that wraps traditional system file operations on files accessed through the filesystem. More...

#include "util/file/file_reader.h"

Inheritance diagram for crashpad::FileReader:

Public Member Functions
bool	Open (const base::FilePath &path)
	Wraps LoggingOpenFileForRead(). More...
void	Close ()
	Wraps CheckedCloseHandle(). More...
FileOperationResult	Read (void *data, size_t size) override
	Wraps ReadFile(), or provides an implementation with identical semantics. More...
FileOffset	Seek (FileOffset offset, int whence) override
	Wraps LoggingSeekFile() or provides an alternate implementation with identical semantics. More...
Public Member Functions inherited from crashpad::FileReaderInterface
bool	ReadExactly (void *data, size_t size)
	Wraps Read(), ensuring that the read succeeded and exactly size bytes were read. More...
Public Member Functions inherited from crashpad::FileSeekerInterface
FileOffset	SeekGet ()
	Wraps Seek(), using SEEK_CUR to obtain the file’s current position. More...
bool	SeekSet (FileOffset offset)
	Wraps Seek(), using SEEK_SET, ensuring that the seek succeeded and the file is positioned as desired. More...

Detailed Description

A file reader implementation that wraps traditional system file operations on files accessed through the filesystem.

Member Function Documentation

Close()

void crashpad::FileReader::Close

(

)

Wraps CheckedCloseHandle().

Note

It is only valid to call this method on an object that has had a successful Open() that has not yet been matched by a subsequent call to this method.

Open()

bool crashpad::FileReader::Open

(

const base::FilePath &

path

)

Wraps LoggingOpenFileForRead().

Returns

true if the operation succeeded, false if it failed, with an error message logged.

Note

After a successful call, this method cannot be called again until after Close().

Read()

FileOperationResult crashpad::FileReader::Read ( void *  data, size_t  size  )

overridevirtual

Wraps ReadFile(), or provides an implementation with identical semantics.

Returns

The number of bytes actually read if the operation succeeded, which may be 0 or any positive value less than or equal to size. -1 if the operation failed, with an error message logged.

Note

It is only valid to call this method between a successful Open() and a Close().

Implements crashpad::FileReaderInterface.

Seek()

FileOffset crashpad::FileReader::Seek ( FileOffset  offset, int  whence  )

overridevirtual

Wraps LoggingSeekFile() or provides an alternate implementation with identical semantics.

Returns

The return value of LoggingSeekFile(). -1 on failure, with an error message logged.

Note

It is only valid to call this method between a successful Open() and a Close().

Implements crashpad::FileSeekerInterface.

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

• util/file/file_reader.h
• util/file/file_reader.cc