Module: RealUser

Defined in:
lib/realuser.rb

Overview

lib/realuser.rb

MIT License

Copyright © 2024 Julian Kahlert

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Defined Under Namespace

Classes: ProcFs, Resolver

Class Method Summary collapse

Class Method Details

.ruid(cfg = Process.pid) ⇒ Integer?

Determines the real user ID (RUID) of a process, either using a deep or shallow search. If a ‘Hash` is provided, the configuration specifies whether to perform a deep search.

Parameters:

  • cfg (Integer, Hash) (defaults to: Process.pid) —

    the process ID (Integer) or configuration Hash.

    • If an Integer is provided, a deep search is performed.

    • If a Hash is provided, it can contain:

      • ‘:pid` (Integer): the process ID to resolve. Defaults to the current process.

      • ‘:deep` (Boolean): whether to perform a deep search. Defaults to shallow.

Returns:

  • (Integer, nil) —

    the real user ID of the process, or ‘nil` if it cannot be determined.



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# File 'lib/realuser.rb', line 122

def self.ruid(cfg = Process.pid)
  case cfg
  when Integer
    Resolver.deep(cfg)
  when Hash
    pid = cfg[:pid] || Process.pid
    deep = cfg[:deep]
    return Resolver.deep(pid) if deep

    Resolver.shallow(pid)
  end
end