per-user resolv.conf

Question

My linux server has differnt users [u01 - u04], can I have each user use a specific resolv.conf?

for example:

u01:  nameserver=10.14.15.123
u02:  nameserver=10.14.15.124
u03:  nameserver=10.14.16.125

Answer 1

Short answer is no, see resolv.conf(5). However if you really want this feature, you can reimplement the functions in resolver(3) in a shared library, and use ld-magic to override the originals, at least in dynamically linked applications.