Mount /dev/shm as tmpfs

2 files changed, 11 insertions, 1 deletions

diff --git a/iurt_root_command b/iurt_root_command
index 90abf38..1843269 100755
--- a/iurt_root_command
+++ b/iurt_root_command
@@ -143,6 +143,10 @@ $run{todo} = [];
     "bind mount source on dest", 
     \&bindmount, "Bind mounting" ],
 
+    [ "", "tmpfs", 1, "<directory>", 
+    "mount a tmpfs on the given directory", 
+    \&tmpfs, "Mount tmpfs" ],
+
     [ "", "umount", 1, "<directory>", 
     "umount the given directory", 
     \&umount, "Unmounting" ],
@@ -421,6 +425,12 @@ sub bindmount {
     return 1;
 }
 
+sub tmpfs {
+    my ($_run, $dir) = @_;
+    check_path_authorized($dir) or return;
+    return !system("mount", "none", "-t", "tmpfs", $dir);
+}
+
 sub umount {
     my ($_run, $dir) = @_;
     check_path_authorized($dir) or return;
diff --git a/lib/Iurt/Chroot.pm b/lib/Iurt/Chroot.pm
index 0f196e0..1e19860 100644
--- a/lib/Iurt/Chroot.pm
+++ b/lib/Iurt/Chroot.pm
@@ -88,7 +88,7 @@ sub clean_and_build_chroot {
 	sudo($config, "--umount", "$chroot/proc");
 	return;
     }
-    if (!sudo($config, '--bindmount', "/dev/shm", "$chroot/dev/shm")) {
+    if (!sudo($config, '--tmpfs', "$chroot/dev/shm")) {
 	plog('WARNING', "Failed to mount /dev/shm");
     }
     if ($run->{icecream}) {