不需要root来添加打印机

Question

当用户想要添加新打印机时，它要求输入 root 密码。我有一个LTSP环境，系统一直在要求输入root密码；它甚至不需要 sudo 用户的密码。有什么方法可以让某个用户添加/编辑/删除打印机而不拥有任何其他特殊访问权限？

Answer 1

查看 /etc/cups 中的文件

我手头没有 Fedora 15 系统 - 但是查看最近的 RHEL 盒子，相关位在 /etc/cups/cupsd.conf 中

....
# Administrator user group...
SystemGroup sys root
....
# Restrict access to configuration files...
<Location /admin/conf>
  AuthType Basic
  Require user @SYSTEM
  Order allow,deny
  Allow localhost
</Location>
....
 # All administration operations require an adminstrator to authenticate...
<Limit Pause-Printer Resume-Printer Set-Printer-Attributes Enable-Printer 
     Disable-Printer Pause-Printer-After-Current-Job Hold-New-Jobs 
     Release-Held-New-Jobs Deactivate-Printer Activate-Printer 
     Restart-Printer Shutdown-Printer Startup-Printer Promote-Job 
     Schedule-Job-After CUPS-Add-Printer CUPS-Delete-Printer 
     CUPS-Add-Class CUPS-Delete-Class CUPS-Accept-Jobs 
     CUPS-Reject-Jobs CUPS-Set-Default>
  AuthType Basic
  Require user @SYSTEM
  Order deny,allow
</Limit>

IIRC，@SYSTEM 是 SystemGroup 中列出的组的宏