why these tmp files?

[Tony Ewell]

Hi All,

    I am using Cent OS 4.3 (same as Red Hat Enterprise
Linux, only cheaper).  And:

     rpm -qa \*bind\*
         bind-chroot-9.2.4-2
 
    In my /var/named/chroot/var/named/slaves directory,
I get a bunch of these tmp files:

-rw-------  1 named named   831 Sep  6 22:57 tmp-XXXX0009JN
-rw-------  1 named named   867 Sep  9 18:57 tmp-XXXX00nQPN
-rw-------  1 named named   867 Sep 12 14:42 tmp-XXXX02r0HE
-rw-------  1 named named   831 Sep  7 06:42 tmp-XXXX039MN1
-rw-------  1 named named   689 Sep  5 14:04 tmp-XXXX0apOTT

Question:

1) are they suppost to be there?

2) will they eventually over run my partition or is there
some mechanism to cull them down to a reasonable number?

Many thanks,
-T