Improve setupSystemd, grab mount options from the host
fixes
@@ -698,11 +698,31 @@ func (c *Container) setupSystemd(mounts []spec.Mount, g generate.Generator) erro
}
g.AddMount(systemdMnt)
} else {
+ mountOptions := []string{"bind", "rprivate"}
+
+ var statfs unix.Statfs_t
+ if err := unix.Statfs("/sys/fs/cgroup/systemd", &statfs); err != nil {
+ mountOptions = append(mountOptions, "nodev", "noexec", "nosuid")
+ } else {
+ if statfs.Flags&unix.MS_NODEV == unix.MS_NODEV {
+ mountOptions = append(mountOptions, "nodev")
+ }
+ if statfs.Flags&unix.MS_NOEXEC == unix.MS_NOEXEC {
+ mountOptions = append(mountOptions, "noexec")
+ }
+ if statfs.Flags&unix.MS_NOSUID == unix.MS_NOSUID {
+ mountOptions = append(mountOptions, "nosuid")
+ }
+ if statfs.Flags&unix.MS_RDONLY == unix.MS_RDONLY {
+ mountOptions = append(mountOptions, "ro")
+ }
+ }
+
systemdMnt := spec.Mount{
Destination: "/sys/fs/cgroup/systemd",
Type: "bind",
Source: "/sys/fs/cgroup/systemd",
- Options: []string{"bind", "nodev", "noexec", "nosuid", "rprivate"},
+ Options: mountOptions,
}
g.AddMount(systemdMnt)
g.AddLinuxMaskedPaths("/sys/fs/cgroup/systemd/release_agent")
