Re: SELinux log

[Laura Lazzati <laura.lazzati.15@gmail.com>]

Hi!

Hope to shed some light.

I followed all the steps that I hadn't followed before in the
documentation manual about SELinux for guix daemon (ran semodule,
restorecon for all the filesystem and restarted the daemon).
I forgot to set SELinux in permissive mode, so I still got the issue
with the socket.
Then I realized about this, and changed the mode. My log shows that
SELinux would have prevented the daemon from running, like when I had
it in enforcing mode:
-----------------------------------------------start
here-------------------------------------------------------
type=SERVICE_START msg=audit(1559870054.070:258): pid=1 uid=0
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='unit=flatpak-system-helper comm="systemd"
exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=?
res=success'^]UID="root" AUID="unset"
type=SERVICE_STOP msg=audit(1559870056.300:259): pid=1 uid=0
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='unit=user@42 comm="systemd" exe="/usr/lib/systemd/systemd"
hostname=? addr=? terminal=? res=success'^]UID="root" AUID="unset"
type=SERVICE_STOP msg=audit(1559870056.340:260): pid=1 uid=0
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='unit=user-runtime-dir@42 comm="systemd"
exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=?
res=success'^]UID="root" AUID="unset"
type=AVC msg=audit(1559870056.930:261): avc:  denied  { read } for
pid=750 comm="guix-daemon" name="libnss_files.so.2" dev="dm-0"
ino=559459 scontext=system_u:system_r:init_t:s0
tcontext=unconfined_u:object_r:user_tmp_t:s0 tclass=lnk_file
permissive=1
type=AVC msg=audit(1559870056.930:262): avc:  denied  { map } for
pid=750 comm="guix-daemon"
path="/gnu/store/h90vnqw0nwd0hhm1l5dgxsdrigddfmq4-glibc-2.28/lib/libnss_files-2.28.so"
dev="dm-0" ino=559457 scontext=system_u:system_r:init_t:s0
tcontext=unconfined_u:object_r:user_tmp_t:s0 tclass=file permissive=1
type=AVC msg=audit(1559870056.930:263): avc:  denied  { execute } for
pid=750 comm="guix-daemon"
path="/gnu/store/h90vnqw0nwd0hhm1l5dgxsdrigddfmq4-glibc-2.28/lib/libnss_files-2.28.so"
dev="dm-0" ino=559457 scontext=system_u:system_r:init_t:s0
tcontext=unconfined_u:object_r:user_tmp_t:s0 tclass=file permissive=1
type=AVC msg=audit(1559870056.937:264): avc:  denied  { create } for
pid=2170 comm="guix-daemon" name="reserved"
scontext=system_u:system_r:init_t:s0
tcontext=system_u:object_r:user_tmp_t:s0 tclass=file permissive=1
type=AVC msg=audit(1559870056.937:265): avc:  denied  { write } for
pid=2170 comm="guix-daemon" path="/var/guix/db/reserved" dev="dm-0"
ino=306296 scontext=system_u:system_r:init_t:s0
tcontext=system_u:object_r:user_tmp_t:s0 tclass=file permissive=1
type=AVC msg=audit(1559870056.940:266): avc:  denied  { write } for
pid=2170 comm="guix-daemon" name="db.sqlite" dev="dm-0" ino=306225
scontext=system_u:system_r:init_t:s0
tcontext=unconfined_u:object_r:user_tmp_t:s0 tclass=file permissive=1
type=AVC msg=audit(1559870056.950:267): avc:  denied  { setattr } for
pid=2170 comm="guix-daemon" name="db.sqlite-wal" dev="dm-0" ino=306376
scontext=system_u:system_r:init_t:s0
tcontext=system_u:object_r:user_tmp_t:s0 tclass=file permissive=1
type=AVC msg=audit(1559870056.950:268): avc:  denied  { map } for
pid=2170 comm="guix-daemon" path="/var/guix/db/db.sqlite-shm"
dev="dm-0" ino=306377 scontext=system_u:system_r:init_t:s0
tcontext=system_u:object_r:user_tmp_t:s0 tclass=file permissive=1
type=AVC msg=audit(1559870058.000:269): avc:  denied  { link } for
pid=2170 comm="guix-daemon"
name="7f1alh9qj2h0wwy2220npgnmw6pbrkwx-mirrors" dev="dm-0" ino=551918
scontext=system_u:system_r:init_t:s0
tcontext=system_u:object_r:user_tmp_t:s0 tclass=file permissive=1
type=AVC msg=audit(1559870058.130:270): avc:  denied  { rename } for
pid=2170 comm="guix-daemon" name=".tmp-link-2170-1804289383"
dev="dm-0" ino=551930 scontext=system_u:system_r:init_t:s0
tcontext=system_u:object_r:user_tmp_t:s0 tclass=file permissive=1
type=AVC msg=audit(1559870060.410:271): avc:  denied  {
execute_no_trans } for  pid=2173 comm="guix-daemon"
path="/gnu/store/ncknl03pkmamrxg7q9nxi1rn1qhvwbi9-guix-1.0.1/libexec/guix/substitute"
dev="dm-0" ino=679069 scontext=system_u:system_r:init_t:s0
tcontext=unconfined_u:object_r:user_tmp_t:s0 tclass=file permissive=1
type=AVC msg=audit(1559870060.886:272): avc:  denied  { name_connect }
for  pid=2173 comm=677569782073756273746974757465 dest=443
scontext=system_u:system_r:init_t:s0
tcontext=system_u:object_r:http_port_t:s0 tclass=tcp_socket
permissive=1
type=SERVICE_STOP msg=audit(1559870062.620:273): pid=1 uid=0
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='unit=fprintd comm="systemd" exe="/usr/lib/systemd/systemd"
hostname=? addr=? terminal=? res=success'^]UID="root" AUID="unset"
type=SERVICE_STOP msg=audit(1559870070.140:274): pid=1 uid=0
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0
msg='unit=systemd-localed comm="systemd"
exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=?
res=success'^]UID="root" AUID="unset"
-----------------------------------------------end
here-------------------------------------------------------

Regards!
Laura