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This is necessary because normally `apparmor_parser -r` will try to
create a temporary directory on the host (which is not allowed if the
host has a rootfs). However, the -K option bypasses saving things to the
cache (which avoids this issue).
% apparmor_parser -r /tmp/docker-profile
mkstemp: Read-only file system
% apparmor_parser -Kr /tmp/docker-profile
%
In addition, add extra information to the ensureDefaultAppArmorProfile
errors so that problems like this are easier to debug.
Fixes: 2f7596aaef ("apparmor: do not save profile to /etc/apparmor.d")
Signed-off-by: Aleksa Sarai <asarai@suse.de>
36 lines
814 B
Go
36 lines
814 B
Go
// +build linux
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package daemon
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import (
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"fmt"
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aaprofile "github.com/docker/docker/profiles/apparmor"
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"github.com/opencontainers/runc/libcontainer/apparmor"
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)
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// Define constants for native driver
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const (
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defaultApparmorProfile = "docker-default"
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)
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func ensureDefaultAppArmorProfile() error {
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if apparmor.IsEnabled() {
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loaded, err := aaprofile.IsLoaded(defaultApparmorProfile)
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if err != nil {
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return fmt.Errorf("Could not check if %s AppArmor profile was loaded: %s", defaultApparmorProfile, err)
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}
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// Nothing to do.
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if loaded {
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return nil
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}
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// Load the profile.
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if err := aaprofile.InstallDefault(defaultApparmorProfile); err != nil {
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return fmt.Errorf("AppArmor enabled on system but the %s profile could not be loaded: %s", defaultApparmorProfile, err)
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}
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}
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return nil
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}
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