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Add -m flag to setfiles for Fedora 26

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As described in the comment and associated bugzilla, the behaviour of
setfiles has changed in Fedora 26 to require "-m" situations where
labeled file-systems are mounted below non-labeled file-systems.  Our
loopback/chroot system appears to trigger this nicely, leading to a
setfiles call that does nothing without this.

Change-Id: I276c6f6a4fb44f4bea5004f6b4214f94757728ae
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
This commit is contained in:
Ian Wienand 2017-07-19 18:48:14 +10:00 committed by Paul Belanger
parent 6ffde2e596
commit 7ffe6856d6
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GPG key ID: 611A80832067AF38
1 changed files with 13 additions and 1 deletions
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14
diskimage_builder/elements/rpm-distro/finalise.d/90-selinux-fixfiles-restore
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@ -15,7 +15,19 @@ if [ -e /etc/selinux/targeted/contexts/files/file_contexts -a -x "${SETFILES}" ]
# instead of the sshd_t domain, making ssh connections fail with
# "Unable to get valid context for <user>" error message
if [ "${MOUNTPOINT}" != "/tmp/in_target.d" ] && [ "${MOUNTPOINT}" != "/dev" ]; then
$SETFILES /etc/selinux/targeted/contexts/files/file_contexts ${MOUNTPOINT}
# setfiles in > Fedora 26 added this flag:
# do not read /proc/mounts to obtain a list of
# non-seclabel mounts to be excluded from relabeling
# checks. Setting this option is useful where there is
# a non-seclabel fs mounted with a seclabel fs
# this describes our situation of being on a loopback device on
# an ubuntu system, say. See also
# https://bugzilla.redhat.com/show_bug.cgi?id=1472709
_dash_m=""
if [[ $DISTRO_NAME == "fedora" && $DIB_RELEASE -ge 26 ]]; then
_dash_m+="-m"
fi
$SETFILES ${_dash_m} /etc/selinux/targeted/contexts/files/file_contexts ${MOUNTPOINT}
fi
done
else