Re: SELinux is preventing boomagabackend from 'sys_ptrace' accesses on the cap_userns Unknown.

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On 03/31/2017 04:30 PM, Oleg Pykhalov wrote:
On 03/30/2017 01:19 PM, Martin Gansser wrote:
$ cat boomaga_local.cil
(allow boomaga_cups_t boomaga_cups_t(cap_userns (sys_ptrace)))

# semodule -i boomaga_local.cil

Thank you for tip but I get another error. So I still have some delay
printing to boomaga printer.

$ sudo semodule -l | grep boomaga
boomaga
boomaga_local

$ cat boomaga_local.cil
(allow boomaga_cups_t boomaga_cups_t(cap_userns (sys_ptrace)))

$ journalctl -b
Mar 31 17:08:31 magnolia.home.lan audit[1070]: USER_AVC pid=1070 uid=81 auid=4294967295 ses=4294967295 subj=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 msg='avc:  denied  { send_msg } for msgtype=method_return dest=:1.1062 spid=1084 tpid=12021 scontext=system_u:system_r:systemd_logind_t:s0 tcontext=system_u:system_r:boomaga_cups_t:s0-s0:c0.c1023 tclass=dbus
                                                exe="/usr/bin/dbus-daemon" sauid=81 hostname=? addr=? terminal=?'


Update your boomaga_local.cil file:
$ cat boomaga_local.cil
(allow boomaga_cups_t boomaga_cups_t(cap_userns (sys_ptrace)))
(allow systemd_logind_t boomaga_cups_t(dbus (send_msg)))

and load it again:
# semodule -i boomaga_local.cil

Lukas.

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--
Lukas Vrabec
SELinux Solutions
Red Hat, Inc.
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