Conversation with #inferno at Sun Dec 19 22:58:10 2010 on powerman-asdf@irc.freenode.net (irc)
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(10:36:13) mjl: morning
(12:24:34) mjl: has anyone successfully used linux' setcap to let emu bind to tcp ports <1024 as non-root?
(12:32:41) robot12: no
(12:34:31) mjl: bummer
(12:34:33) mjl: i'm trying now
(12:34:41) mjl: but i cannot get it to work
(12:34:53) mjl: not even the "bind" capability given to nc(1)...
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(12:35:48) mjl: robot12: have you tried using it?
(12:37:01) robot12: U must do some magic ... to bind to port :) 
(12:39:36) robot12: http://stackoverflow.com/questions/413807/is-there-a-way-for-non-root-processes-to-bind-to-privileged-ports-1024-on-li
(12:40:41) robot12: there are answers for your questions :)
(12:48:07) mjl: yeah, i found that
(12:48:11) mjl: and i'm doing the capabilities thing
(12:48:18) mjl: but no luck
(12:49:35) mjl: knaagkever$ getcap /scratch/inferno/nc           
(12:49:36) mjl: /scratch/inferno/nc = cap_net_bind_service+eip
(12:49:36) mjl: knaagkever$ /scratch/inferno/nc -l localhost 8001
(12:49:36) mjl: ^C
(12:49:36) mjl: knaagkever$ /scratch/inferno/nc -l localhost 81  
(12:49:38) mjl: nc: Permission denied
(12:49:41) mjl: knaagkever$ 
(12:51:45) robot12: it's linux :) 
(12:52:46) mjl: yeah...
(12:56:00) mjl: the standard examples that let you run ping as non-root also don't work
(12:56:09) mjl: perhaps my kernel has capabilities disabled somewhere...
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(13:09:39) robot12: mjl: try another distro 
(13:11:25) mjl: :(
(13:11:43) mjl: i think we already have a custom kernel, for xen domU on ubuntu...
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(14:02:31) mjl: jups, the custom kernel somehow has the options disabled, standard ubuntu kernels have it enabled
(14:25:02) robot12: greets ! :) 
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(15:43:00) mjl: ok, i think i finished upgrading webserver and other services to the latest inferno, with ipv6 support
(15:43:37) mjl: now only a server reboot required for the new kernel with (file system) capabilities support, and i can serve ipv6 properly
(15:47:34) robot12: inferno with ipv6 ???? I've missed something :( 
(15:52:05) mjl: http://code.google.com/p/inferno-os/source/detail?r=f8acfc1c7cfc4fd671b886aa033ef7d7a6ece1da
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