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tests: check for loopback module on pivot_root test

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mount -o loop fails when the loopback module is not loaded with
permission denied. Add a check if /dev/loop0 exists. If not, load
the loop module.

MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/781
Signed-off-by: Georgia Garcia <georgia.garcia@canonical.com>
Acked-by: Christian Boltz <apparmor@cboltz.de>
(cherry picked from commit 656a48b900)
Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
Georgia Garcia
2021-08-02 14:24:53 -03:00
committed by John Johansen
parent fa7eb62c62
commit eeca73e675
1 changed files with 5 additions and 0 deletions
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5
tests/regression/apparmor/pivot_root.sh
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@@ -45,6 +45,11 @@ pivot_root_cleanup() {
} }
do_onexit="pivot_root_cleanup" do_onexit="pivot_root_cleanup"
# loopback module must be loaded for mount -o loop to work
if [ ! -b /dev/loop0 ] ; then
modprobe loop
fi
# systemd mounts / and everything under it MS_SHARED. This breaks # systemd mounts / and everything under it MS_SHARED. This breaks
# pivot_root entirely, so attempt to detect it, and remount / # pivot_root entirely, so attempt to detect it, and remount /
# MS_PRIVATE temporarily. # MS_PRIVATE temporarily.