Class: Yast::NfsOptionsClass

Inherits:
Module
  • Object
show all
Defined in:
../../src/modules/NfsOptions.rb

Instance Method Summary (collapse)

Instance Method Details

- (Array) from_string(options)

Parse to an internal representation: Simply split by commas, but "defaults" is represented by the empty list

Parameters:

  • options (String)

    a fstab option string

Returns:

  • (Array)

    of individual options



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# File '../../src/modules/NfsOptions.rb', line 15

def from_string(options)
  options = "" if options == "defaults"
  Builtins.splitstring(options, ",")
end

- (Object) get_nfs41(options)

FIXME: factor out get_nfs4(vfstype, options) (depending on n::o)! * @param options fstab option string * @return is version >= 4.1 enabled



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# File '../../src/modules/NfsOptions.rb', line 176

def get_nfs41(options)
  option_list = from_string(options)

  _ENABLED = "minorversion=1"
  Builtins.contains(option_list, _ENABLED)
end

- (Object) main



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# File '../../src/modules/NfsOptions.rb', line 7

def main
  textdomain "nfs"
end

- (Object) set_nfs41(options, nfs41)

Add or remove minorversion=1 according to nfs41. FIXME vfstype=nfs4 is deprecated in favor of nfsvers=4 (aka vers=4)

Parameters:

  • options (String)

    fstab option string

  • nfs41 (Boolean)

    is version >= 4.1 enabled

Returns:

  • new fstab option string



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# File '../../src/modules/NfsOptions.rb', line 188

def set_nfs41(options, nfs41)
  # don't mutate the string unnecessarily
  return options if get_nfs41(options) == nfs41

  _ENABLED = "minorversion=1"
  _DISABLED = "minorversion=0"

  option_list = from_string(options)
  option_list = Builtins.filter(option_list) { |opt| opt != _ENABLED }
  option_list = Builtins.filter(option_list) { |opt| opt != _DISABLED }

  option_list = Builtins.add(option_list, _ENABLED) if nfs41

  to_string(option_list)
end

- (Object) to_string(option_list)

Convert list of individual options to a fstab option string

Parameters:

  • option_list (Array<String>)

    list of individual options

Returns:

  • a fstab option string



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# File '../../src/modules/NfsOptions.rb', line 23

def to_string(option_list)
  option_list = deep_copy(option_list)
  options = Builtins.mergestring(option_list, ",")
  options = "defaults" if options == ""
  options
end

- (Object) validate(options)

Checks the nfs options for /etc/fstab: nonempty, comma separated list of foo,nofoo,bar=baz (see nfs(5))

Parameters:

  • options (String)

    options

Returns:

  • a translated string with error message, emtpy string if ok



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# File '../../src/modules/NfsOptions.rb', line 34

def validate(options)
  # To translators: error popup
  if Builtins.size(options) == 0
    return _("Empty option strings are not allowed.")
  end

  option_list = from_string(options)

  # The options should be kept synced with the code that handles them,
  # which is not an easy task, as there are many places:
  # - util-linux.rpm
  #   man 8 mount
  #   https://git.kernel.org/?p=utils/util-linux/util-linux.git;a=history;f=libmount/src/optmap.c
  # - nfs-client.rpm (nfs-utils.src.rpm)
  #   man 5 nfs
  #   http://git.linux-nfs.org/?p=steved/nfs-utils.git;a=history;f=utils/mount/nfsmount.c
  # - kernel: fs/nfs/super.c
  #   http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=history;f=fs/nfs/super.c
  # Note that minorversion in particular is mentioned only in the kernel
  # but not in nfs-utils. WTF.

  # these can be negated by "no"
  _NEGATABLE_OPTIONS = [
    "bg",
    "fg",
    "soft",
    "hard",
    "intr",
    "posix",
    "cto",
    "ac",
    "acl",
    "lock",
    "tcp",
    "udp",
    "rdirplus",
    # these are common for all fs types
    "atime",
    "auto",
    "dev",
    "exec",
    "group",
    "owner",
    "suid",
    "user",
    "users"
  ]
  _NEGATED_OPTIONS = Builtins.maplist(_NEGATABLE_OPTIONS) do |e|
    Builtins.sformat("no%1", e)
  end

  # these cannot be negated
  # they are not nfs specific BTW
  _SIMPLE_OPTIONS = [
    "defaults",
    "async",
    "sync",
    "dirsync",
    "ro",
    "rw",
    "remount",
    "bind",
    "rbind",
    "_netdev"
  ]
  _OPTIONS_WITH_VALUE = [
    "rsize",
    "wsize",
    "timeo",
    "retrans",
    "acregmin",
    "acregmax",
    "acdirmin",
    "acdirmin",
    "acdirmax",
    "actimeo",
    "retry",
    "namlen",
    "port",
    "proto",
    "clientaddr",
    "mountport",
    "mounthost",
    "mountprog",
    "mountvers",
    "nfsprog",
    "nfsvers",
    "vers",
    "minorversion",
    "sec"
  ]

  # first fiter out non value options and its nooptions forms (see nfs(5))
  option_list = Builtins.filter(option_list) do |e|
    !Builtins.contains(_NEGATABLE_OPTIONS, e)
  end
  option_list = Builtins.filter(option_list) do |e|
    !Builtins.contains(_NEGATED_OPTIONS, e)
  end
  option_list = Builtins.filter(option_list) do |e|
    !Builtins.contains(_SIMPLE_OPTIONS, e)
  end

  error_message = ""
  Builtins.foreach(option_list) do |opt|
    opt_tuple = Builtins.splitstring(opt, "=")
    key = Ops.get(opt_tuple, 0, "")
    value = Ops.get(opt_tuple, 1, "")
    # By now we have filtered out known options without values;
    # so what is left is either unknown options, ...
    # FIXME: this also triggers for "intr=bogus"
    # because we should have considered '=' before the simple options
    # FIXME "'" + foo + "'" used not to break translations; merge it.
    if !Builtins.contains(_OPTIONS_WITH_VALUE, key)
      # To translators: error popup
      error_message = Builtins.sformat(
        _("Unknown option: %1"),
        Ops.add(Ops.add("'", key), "'")
      )
    # ... or known ones with badly specified values
    elsif Builtins.size(opt_tuple) != 2
      # To translators: error popup
      error_message = Builtins.sformat(
        _("Invalid option: %1"),
        Ops.add(Ops.add("'", opt), "'")
      )
    elsif value == ""
      # To translators: error popup
      error_message = Builtins.sformat(
        _("Empty value for option: %1"),
        Ops.add(Ops.add("'", key), "'")
      )
    end
    raise Break if error_message != ""
  end

  error_message
end