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In certain cases (unattended upgrades), system services can disable loaded AppArmor profiles. However, since /etc being read-only is a supported setup we cannot just write a copy of the profile to /etc/apparmor.d. Instead, dynamically load the docker-default AppArmor profile if a container is started with that profile set. This code will short-cut if the profile is already loaded. Fixes:2f7596aaef("apparmor: do not save profile to /etc/apparmor.d") Signed-off-by: Aleksa Sarai <asarai@suse.de> (cherry picked from commit567ef8e785) Signed-off-by: Victor Vieux <vieux@docker.com>
36 lines
806 B
Go
36 lines
806 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.", defaultApparmorProfile)
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}
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}
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return nil
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}
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