Class: FuseFS::FileHandle

Inherits:
Object
  • Object
show all
Defined in:
lib/fuse/rfusefs-fuse.rb

Constant Summary collapse

@@fh = 
0

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path, flags) ⇒ FileHandle

Returns a new instance of FileHandle.



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# File 'lib/fuse/rfusefs-fuse.rb', line 14

def initialize(path,flags)
  @id = (@@fh += 1)
  @flags = flags
  @path = path
  @modified = false
  @contents = ""
  @size = 0
end

Instance Attribute Details

#contents ⇒ Object

Returns the value of attribute contents.



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# File 'lib/fuse/rfusefs-fuse.rb', line 13

def contents
  @contents
end

#flags ⇒ Object (readonly)

Returns the value of attribute flags.



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# File 'lib/fuse/rfusefs-fuse.rb', line 12

def flags
  @flags
end

#id ⇒ Object (readonly)

Returns the value of attribute id.



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# File 'lib/fuse/rfusefs-fuse.rb', line 12

def id
  @id
end

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/fuse/rfusefs-fuse.rb', line 12

def path
  @path
end

#raw ⇒ Object

Returns the value of attribute raw.



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# File 'lib/fuse/rfusefs-fuse.rb', line 13

def raw
  @raw
end

Instance Method Details

#accmode ⇒ Object 



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# File 'lib/fuse/rfusefs-fuse.rb', line 54

def accmode
  flags & Fcntl::O_ACCMODE
end

#append? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fuse/rfusefs-fuse.rb', line 70

def append?
  writing? && (flags & Fcntl::O_APPEND != 0)
end

#create ⇒ Object 



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# File 'lib/fuse/rfusefs-fuse.rb', line 27

def create
  @contents = ""
  @modified = true
end

#flush ⇒ Object 



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# File 'lib/fuse/rfusefs-fuse.rb', line 45

def flush
  @modified = false
  contents
end

#modified? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fuse/rfusefs-fuse.rb', line 50

def modified?
  @modified
end

#raw_mode ⇒ Object 



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# File 'lib/fuse/rfusefs-fuse.rb', line 82

def raw_mode
  mode_str = case accmode
             when Fcntl::O_RDWR; "rw"
             when Fcntl::O_RDONLY; "r"
             when Fcntl::O_WRONLY; "w"
             end

  mode_str << "a" if append?
  return mode_str
end

#rdonly? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fuse/rfusefs-fuse.rb', line 66

def rdonly?
  accmode == Fcntl::O_RDONLY
end

#rdwr? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fuse/rfusefs-fuse.rb', line 58

def rdwr?
  accmode == Fcntl::O_RDWR
end

#read(offset, size) ⇒ Object 



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# File 'lib/fuse/rfusefs-fuse.rb', line 23

def read(offset,size)
  contents[offset,size]
end

#reading? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fuse/rfusefs-fuse.rb', line 74

def reading?
  rdonly? || rdwr?
end

#write(offset, data) ⇒ Object 



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# File 'lib/fuse/rfusefs-fuse.rb', line 32

def write(offset,data)
  # TODO: why append?
  if append? || offset >= contents.length
    #ignore offset
    #TODO: should this zero fill?
    contents << data
  else
    contents[offset,data.length]=data
  end
  @modified = true
  return data.length
end

#writing? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fuse/rfusefs-fuse.rb', line 78

def writing?
  wronly? || rdwr?
end

#wronly? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fuse/rfusefs-fuse.rb', line 62

def wronly?
  accmode == Fcntl::O_WRONLY
end