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systemd-networkd: allow communicating with hostnamed

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When systemd-netwokd receives DHCP option 12 (hostname), it changes the
hostname by calling method SetHostname from interface
org.freedesktop.hostname1 provided by systemd-hostnamed:
https://github.com/systemd/systemd/blob/v243/src/network/networkd-manager.c#L1946

This access is currently denied and reported:

    type=USER_AVC msg=audit(1568403789.952:36): pid=288 uid=105
    auid=4294967295 ses=4294967295 subj=system_u:system_r:system_dbusd_t
    msg='avc:  denied  { send_msg } for msgtype=method_call
    interface=org.freedesktop.hostname1 member=SetHostname
    dest=org.freedesktop.hostname1 spid=233 tpid=317
    scontext=system_u:system_r:systemd_networkd_t
    tcontext=system_u:system_r:systemd_hostnamed_t tclass=dbus
    permissive=1  exe="/usr/bin/dbus-daemon" sauid=105 hostname=? addr=?
    terminal=?'

Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
This commit is contained in:
Nicolas Iooss 2019-09-14 13:55:57 +02:00
parent a5dab43a85
commit 19542fd26a
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GPG Key ID: C191415F340DAAA0
1 changed files with 2 additions and 0 deletions
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2
policy/modules/system/systemd.te
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@ -690,6 +690,8 @@ systemd_log_parse_environment(systemd_networkd_t)
optional_policy(`
dbus_system_bus_client(systemd_networkd_t)
dbus_connect_system_bus(systemd_networkd_t)
systemd_dbus_chat_hostnamed(systemd_networkd_t)
')
optional_policy(`