File: change_privilege.rb

package info (click to toggle)
ruby-daemons 1.4.1-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 388 kB
  • sloc: ruby: 2,133; makefile: 7
file content (17 lines) | stat: -rw-r--r-- 525 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
require 'daemons/etc_extension'

class CurrentProcess
  def self.change_privilege(user, group = user)
    uid, gid = Process.euid, Process.egid
    target_uid = Etc.getpwnam(user).uid
    target_gid = Etc.getgrnam(group).gid

    if uid != target_uid || gid != target_gid
      Process.initgroups(user, target_gid)
      Process::GID.change_privilege(target_gid)
      Process::UID.change_privilege(target_uid)
    end
  rescue Errno::EPERM => e
    raise "Couldn't change user and group to #{user}:#{group}: #{e}"
  end
end