Class: MemoryIO::Util::FilePermission

Inherits:
Object
  • Object
show all
Defined in:
lib/memory_io/util.rb

Overview

A simple class to be returned for getting file permissions.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ FilePermission

Returns a new instance of FilePermission.



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# File 'lib/memory_io/util.rb', line 15

def initialize(file)
  stat = File.stat(file)
  @readable = stat.readable_real?
  @writable = stat.writable_real?
  # we do a trick here because /proc/[pid]/mem might be marked as writeable but fails at sysopen.
  begin
    @readable && File.open(file, 'rb').close
  rescue Errno::EACCES
    @readable = false
  end
  begin
    @writable && File.open(file, 'wb').close
  rescue Errno::EACCES
    @writable = false
  end
end

Instance Attribute Details

#readable ⇒ Object (readonly) Also known as: readable?

Returns the value of attribute readable.



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# File 'lib/memory_io/util.rb', line 10

def readable
  @readable
end

#writable ⇒ Object (readonly) Also known as: writable?

Returns the value of attribute writable.



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# File 'lib/memory_io/util.rb', line 10

def writable
  @writable
end