Re: [Bug-mailfromd] How to handle defunct processes?

["Sergey Poznyakoff" <gray@xxxxxxxxxx>]

Hi Mehmet,

> I am using the below function to lookup items from postfix hash
> tables, but seeing a number of defunct postmap processes.

That's because you forgot to close the file handle.

> Is there a better way to handle this?

Yes, with a minimal number of modifications:

 func get_postfix_map(string query, string table)
     returns string
 do
     number fd
     string cmd "/sbin/postmap -q %query /etc/postfix/%table"
 
     set fd open("|&2>null: %cmd")
     catch e_eof
     do
        close(fd)
       	return ""
     done
     set ret getline(fd)
     close(fd)
     return ret
 done

 Or, rearranging things a bit:

 func get_postfix_map(string query, string table)
     returns string
 do
     string cmd "/sbin/postmap -q %query /etc/postfix/%table"
     string ret
     set fd open("|&2>null: %cmd")
     try
     do
        set ret getline(fd)
     done
     catch e_eof
     do
       	set ret ""
     done
     close(fd)
     return ret
 done

Regards,
Sergey