[squid-dev] [PATCH] start workers as root

[Tsantilas Christos]

SMP workers in trunk start without root privileges. This results in 
startup  failures when workers need to use a privileged port (e.g., 443) 
or other  root-only features such as TPROXY.

This bug added with my "Moved PID file management from Coordinator to 
Master" patch.

The problem is inside watch_child function which called after a 
enter_suid() call, but the  writePidFile() call, inside the 
watch_child(), will leave suid mode before exit.

This patch removes the enter_suid/leave_suid cals from the writePidFile 
  and make the caller responsible for setting the root privileges if 
required.
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