VOLATILE_TMP_DIR: add

Provide a mechanism to allow users to choose whether the /tmp directory
is on persistent storage (non-volatile) or a RAM-based tmpfs (volatile).
The default is volatile.

Works for both sysvinit-based and systemd-based systems.

(From OE-Core rev: 8b76c0637eaeaf5bd5e696680cd74b7a642f4157)

Signed-off-by: Trevor Woerner <twoerner@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/meta/recipes-core/systemd/systemd_252.5.bb b/meta/recipes-core/systemd/systemd_252.5.bb
index ea468da150..8b92b2cf42 100644
--- a/meta/recipes-core/systemd/systemd_252.5.bb
+++ b/meta/recipes-core/systemd/systemd_252.5.bb
@@ -288,6 +288,13 @@ do_install() {
                 rm -rf ${D}${localstatedir}/log/journal/remote
         fi
 
+        # if the user requests /tmp be on persistent storage (i.e. not volatile)
+        # then don't use a tmpfs for /tmp
+        if [ "${VOLATILE_TMP_DIR}" != "yes" ]; then
+                rm -f ${D}${rootlibdir}/systemd/system/tmp.mount
+                rm -f ${D}${rootlibdir}/systemd/system/local-fs.target.wants/tmp.mount
+        fi
+
         install -d ${D}${systemd_system_unitdir}/graphical.target.wants
         install -d ${D}${systemd_system_unitdir}/multi-user.target.wants
         install -d ${D}${systemd_system_unitdir}/poweroff.target.wants