Class: OsCtld::BpfFs

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Includes:
Singleton
Defined in:
lib/osctld/bpf_fs.rb

Constant Summary collapse

FS = 
'/sys/fs/bpf'.freeze
ROOT_DIR = 
File.join(FS, 'osctl')
PROG_DIR = 
File.join(ROOT_DIR, 'progs')
POOL_DIR = 
File.join(ROOT_DIR, 'pools')

Instance Method Summary collapse

Instance Method Details

#add_pool(pool_name) ⇒ Object 



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# File 'lib/osctld/bpf_fs.rb', line 28

def add_pool(pool_name)
  FileUtils.mkdir_p(File.join(pool_dir(pool_name), 'links'))
end

#link_pin_path(pool_name, link_name) ⇒ Object 



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# File 'lib/osctld/bpf_fs.rb', line 54

def link_pin_path(pool_name, link_name)
  File.join(pool_dir(pool_name), 'links', link_name)
end

#link_pinned?(pool_name, link_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/osctld/bpf_fs.rb', line 58

def link_pinned?(pool_name, link_name)
  File.exist?(link_pin_path(pool_name, link_name))
end

#list_links(pool_name) ⇒ Object 



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# File 'lib/osctld/bpf_fs.rb', line 62

def list_links(pool_name)
  dir = File.join(pool_dir(pool_name), 'links')

  Dir.entries(dir).select do |f|
    !%w[. ..].include?(f) && File.file?(File.join(dir, f))
  end
rescue Errno::ENOENT
  []
end

#list_progs ⇒ Object 



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# File 'lib/osctld/bpf_fs.rb', line 44

def list_progs
  dir = PROG_DIR

  Dir.entries(dir).select do |f|
    !%w[. ..].include?(f) && File.file?(File.join(dir, f))
  end
rescue Errno::ENOENT
  []
end

#pool_dir(pool_name) ⇒ Object (protected) 



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# File 'lib/osctld/bpf_fs.rb', line 74

def pool_dir(pool_name)
  File.join(POOL_DIR, pool_name)
end

#prog_pin_path(prog_name) ⇒ Object 



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# File 'lib/osctld/bpf_fs.rb', line 36

def prog_pin_path(prog_name)
  File.join(PROG_DIR, prog_name)
end

#prog_pinned?(prog_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/osctld/bpf_fs.rb', line 40

def prog_pinned?(prog_name)
  File.exist?(prog_pin_path(prog_name))
end

#remove_pool(pool_name) ⇒ Object 



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# File 'lib/osctld/bpf_fs.rb', line 32

def remove_pool(pool_name)
  FileUtils.rm_rf(pool_dir(pool_name), secure: true)
end

#setup ⇒ Object 



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# File 'lib/osctld/bpf_fs.rb', line 24

def setup
  FileUtils.mkdir_p(PROG_DIR)
end