Module: LinuxMount

Defined in:
lib/fs/modules/LinuxMount.rb

Defined Under Namespace

Classes: PathNode

Constant Summary collapse

FSTAB_FILE_NAME = 
"/etc/fstab"

Instance Method Summary collapse

Instance Method Details

#fileSymLink?(p) ⇒ Boolean

Given a path to a file, return true if it’s a symbolic link. Otherwise, return false.

Returns:

  • (Boolean) 


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# File 'lib/fs/modules/LinuxMount.rb', line 22

def fileSymLink?(p)
  #
  # We can't just expand the links in the whole path,
  # because then, the target file will no longer be a link.
  # So, we expand the path to the target file, then open
  # the target file through that path to obtain the link data.
  #
  np = normalizePath(p)
  d = File.dirname(np)
  f = File.basename(np)

  # Expand the path to the target file.
  exp_dir = expandLinks(d)

  # Get the file system where the target file resides, and it's local path.
  fs, lp = getFsPathBase(File.join(exp_dir, f))
  fs.fileSymLink?(lp)
end

#fs_init ⇒ Object 



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# File 'lib/fs/modules/LinuxMount.rb', line 6

def fs_init
  @guestOS = "Linux"

  @rootFS = MiqFS.getFS(@rootVolume)
  raise "LinuxMount: could not mount root volume" unless @rootFS

  assign_device_letters
  fs_spec_hash = build_fstab_spec
  build_os_names
  build_mount_point_tree(fs_spec_hash)
end

#getLinkPath(p) ⇒ Object

Given a path to a symbolic link, return the full path to where the link points.



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# File 'lib/fs/modules/LinuxMount.rb', line 45

def getLinkPath(p)
  #
  # We can't just expand the links in the whole path,
  # because then, the target file will no longer be a link.
  # So, we expand the path to the target file, then open
  # the target file through that path to obtain the link data.
  #
  np = normalizePath(p)
  d = File.dirname(np)
  f = File.basename(np)

  # Expand the path to the target file.
  exp_dir = expandLinks(d)

  # Get the file system where the target file resides, and it's local path.
  fs, lp = getFsPathBase(File.join(exp_dir, f))
  # Read the link data from the file, through its file system.
  sp = getSymLink(fs, lp)
  # Construct and return the full path to the link target.
  return(sp) if sp[0, 1] == '/'
  normalizePath(File.join(exp_dir, sp))
end