[systemd-devel] [PATCH 1/2] Mount /run, /dev/shm usable to tasks when using SMACK.

[Auke Kok]

Once system itself is running in a security domain for SMACK,
it will fail to start countless tasks due to missing privileges
for mounted and created directory structures. For /run and shm
specifically, we grant all tasks access.
---
 src/core/mount-setup.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/core/mount-setup.c b/src/core/mount-setup.c
index 4359f59..310afbd 100644
--- a/src/core/mount-setup.c
+++ b/src/core/mount-setup.c
@@ -79,10 +79,18 @@ static const MountPoint mount_table[] = {
           NULL,       MNT_NONE },
         { "smackfs",    "/sys/fs/smackfs",           "smackfs",    "smackfsdef=*", MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_STRICTATIME,
           NULL,       MNT_NONE },
+#ifdef HAVE_SMACK
+        { "tmpfs",      "/dev/shm",                  "tmpfs",      "mode=1777,smackfsroot=*", MS_NOSUID|MS_NODEV|MS_STRICTATIME,
+          NULL,       MNT_FATAL|MNT_IN_CONTAINER },
+#endif
         { "tmpfs",      "/dev/shm",                  "tmpfs",      "mode=1777", MS_NOSUID|MS_NODEV|MS_STRICTATIME,
           NULL,       MNT_FATAL|MNT_IN_CONTAINER },
         { "devpts",     "/dev/pts",                  "devpts",     "mode=620,gid=" STRINGIFY(TTY_GID), MS_NOSUID|MS_NOEXEC,
           NULL,       MNT_IN_CONTAINER },
+#ifdef HAVE_SMACK
+        { "tmpfs",      "/run",                      "tmpfs",      "mode=755,smackfsroot=*", MS_NOSUID|MS_NODEV|MS_STRICTATIME,
+          NULL,       MNT_FATAL|MNT_IN_CONTAINER },
+#endif
         { "tmpfs",      "/run",                      "tmpfs",      "mode=755", MS_NOSUID|MS_NODEV|MS_STRICTATIME,
           NULL,       MNT_FATAL|MNT_IN_CONTAINER },
         { "tmpfs",      "/sys/fs/cgroup",            "tmpfs",      "mode=755", MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_STRICTATIME,
-- 
1.8.1.3