Chore: Upgrade Jenkins-job-builder to 6.3.0

[releng/global-jjb.git] / jenkins-init-scripts / create-swap-file.sh

diff --git a/jenkins-init-scripts/create-swap-file.sh b/jenkins-init-scripts/create-swap-file.sh
index cf8d97f..8090bce 100755 (executable)
--- a/jenkins-init-scripts/create-swap-file.sh
+++ b/jenkins-init-scripts/create-swap-file.sh
@@ -9,7 +9,22 @@
 # http://www.eclipse.org/legal/epl-v10.html
 ##############################################################################
 
-dd if=/dev/zero of=/swap count=1024 bs=1MiB
+# Get the blockCount from the 'SWAP_SIZE' environmental variable
+blockCount=${SWAP_SIZE-''}
+
+# Validate SWAP_SIZE
+# Empty:   Set blockCount 1
+# Zero:    No Swap
+# Integer: Set blockCount
+# Else:    No Swap
+case $blockCount in
+    '')      blockCount=1 ;;
+    [0-9]*)  ;;
+    *)       exit ;;
+esac
+[[ $blockCount == 0 ]] && exit
+
+dd if=/dev/zero of=/swap count="${blockCount}k" bs=1MiB
 chmod 600 /swap
 mkswap /swap
 swapon /swap