62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
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#pragma once
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#include "fs/File.h"
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class RamFSFile: public File
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{
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public:
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RamFSFile ( Inode* inode, Dentry* dentry, uint32 flag );
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virtual ~RamFSFile();
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/**
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* Sets the file position relative to the start of the file, the end of
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* the file or the current file position.
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* @param offset is the offset to set.
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* @param origin is the on off SEEK_SET, SEEK_CUR and SEEK_END.
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* @return the offset from the start off the file or -1 on failure.
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*/
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l_off_t llSeek ( l_off_t offset, uint8 origin );
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/**
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* reads from the file
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* @param buffer is the buffer where the data is written to
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* @param count is the number of bytes to read.
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* @param offset is the offset to read from counted from the start of the file.
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* @return the number of bytes read
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*/
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virtual int32 read ( char *buffer, size_t count, l_off_t offset );
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/**
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* writes to the file
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* @param buffer is the buffer where the data is read from
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* @param count is the number of bytes to write.
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* @param offset is the offset to write from counted from the start of the file.
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* @return the number of bytes written
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*/
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virtual int32 write ( const char *buffer, size_t count, l_off_t offset );
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/**
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* Opens the file
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* @param flag how to open the file
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* @return the filedescriptor
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*/
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virtual int32 open ( uint32 flag );
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/**
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* Closes the file
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* @return 0 on success
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*/
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virtual int32 close();
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/**
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* Flushes all off the file's write operations. The File will be written to disk.
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* @return is the error code of the flush operation.
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*/
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virtual int32 flush();
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};
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