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 



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

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 12

def contents
  @contents
end

#flags ⇒ Object (readonly)

Returns the value of attribute flags.



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# File 'lib/fuse/rfusefs-fuse.rb', line 11

def flags
  @flags
end

#id ⇒ Object (readonly)

Returns the value of attribute id.



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# File 'lib/fuse/rfusefs-fuse.rb', line 11

def id
  @id
end

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/fuse/rfusefs-fuse.rb', line 11

def path
  @path
end

#raw ⇒ Object

Returns the value of attribute raw.



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

def raw
  @raw
end

Instance Method Details

#accmode ⇒ Object 



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# File 'lib/fuse/rfusefs-fuse.rb', line 53

def accmode
    flags & Fcntl::O_ACCMODE
end

#append? ⇒ Boolean 



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# File 'lib/fuse/rfusefs-fuse.rb', line 69

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

#create ⇒ Object 



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# File 'lib/fuse/rfusefs-fuse.rb', line 26

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

#flush ⇒ Object 



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# File 'lib/fuse/rfusefs-fuse.rb', line 44

def flush
    @modified = false
    contents
end

#modified? ⇒ Boolean 



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# File 'lib/fuse/rfusefs-fuse.rb', line 49

def modified?
    @modified
end

#raw_mode ⇒ Object 



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# File 'lib/fuse/rfusefs-fuse.rb', line 81

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 



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# File 'lib/fuse/rfusefs-fuse.rb', line 65

def rdonly?
    accmode == Fcntl::O_RDONLY
end

#rdwr? ⇒ Boolean 



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# File 'lib/fuse/rfusefs-fuse.rb', line 57

def rdwr?
    accmode == Fcntl::O_RDWR
end

#read(offset, size) ⇒ Object 



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# File 'lib/fuse/rfusefs-fuse.rb', line 22

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

#reading? ⇒ Boolean 



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# File 'lib/fuse/rfusefs-fuse.rb', line 73

def reading?
    rdonly? || rdwr?
end

#write(offset, data) ⇒ Object 



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# File 'lib/fuse/rfusefs-fuse.rb', line 31

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 



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# File 'lib/fuse/rfusefs-fuse.rb', line 77

def writing?
    wronly? || rdwr?
end

#wronly? ⇒ Boolean 



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# File 'lib/fuse/rfusefs-fuse.rb', line 61

def wronly?
    accmode == Fcntl::O_WRONLY
end