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apparmor: Use abstractions/nameservice to deal with symlinked resolv.conf

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While abstractions/nameservice appeared too broad and overkill for
our simple need (read-only resolv.conf access), it properly deals
with symlinked resolv.conf files generated by systemd-resolved,
NetworkManager or suchlike.

If we just grant read-only access to /etc/resolv.conf, we'll fail to
read nameserver information in rather common configurations, because
AppArmor won't follow the symlink.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Stefano Brivio 2023-09-06 20:39:12 +02:00
parent a7e4bfb857
commit 6d3e426d2f
1 changed files with 1 additions and 2 deletions
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contrib/apparmor/abstractions/passt
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@ -15,8 +15,7 @@
include <abstractions/base> include <abstractions/base>
# Alternatively: include <abstractions/nameservice> include <abstractions/nameservice> # get_dns(), conf.c
@{etc_ro}/resolv.conf r, # get_dns(), conf.c
capability net_bind_service, # isolation.c, conf.c capability net_bind_service, # isolation.c, conf.c
capability setuid, capability setuid,