make.sh: Build in ramdisk

[ipfire-2.x.git] / make.sh

diff --git a/make.sh b/make.sh
index fd626a999cf2d8ea3abffb1fbd29d7751923ec86..fb529b669c42fd171b57db9cc9fd2c2b2508b619 100755 (executable)
--- a/make.sh
+++ b/make.sh
@@ -290,6 +290,9 @@ stdumount() {
        umount $BASEDIR/build/usr/src/lfs               2>/dev/null;
        umount $BASEDIR/build/usr/src/log               2>/dev/null;
        umount $BASEDIR/build/usr/src/src               2>/dev/null;
+
+       # Umount ramdisk
+       ramdisk_save "${BASEDIR}/build"
 }
 
 now() {
@@ -423,6 +426,68 @@ exiterror() {
        exit 1
 }
 
+ramdisk_save() {
+       local path="${1}"
+
+       # Check if the ramdisk is actually mounted
+       if ! mountpoint "${path}" &>/dev/null; then
+               return 1
+       fi
+
+       # Remove the bind-mount
+       umount "${path}"
+
+       echo -n "Saving ramdisk (this might take a moment)..."
+
+       # Copy all data
+       mkdir -p "${path}.tmpfs"
+       if ! rsync -aHAXq --delete "${path}.tmpfs/" "${path}/"; then
+               print_status FAIL
+               return 1
+       fi
+
+       # Umount ramdisk
+       umount "${path}.tmpfs"
+       rm -rf "${path}.tmpfs"
+
+       print_status DONE
+}
+
+ramdisk_restore() {
+       local path="${1}"
+
+       # Don't do anything if ramdisk support isn't enabled
+       if [ "${USE_RAMDISK}" != "1" ]; then
+               return 1
+       fi
+
+       # Check for sufficient memory
+       # XXX TODO
+
+       echo -n "Restoring ramdisk (this might take a moment)..."
+
+       # Mount new ramdisk
+       mkdir -p "${path}.tmpfs"
+       if ! mount -t tmpfs none "${path}.tmpfs"; then
+               exiterror "Could not mount ramdisk"
+       fi
+
+       # Restore all data
+       if ! rsync -aHAXq --delete "${path}/" "${path}.tmpfs/"; then
+               umount "${path}.tmpfs"
+               rm -rf "${path}.tmpfs"
+
+               exiterror "Could not restore ramdisk"
+       fi
+
+       # Overlay the files on disk
+       # We would use "mount --move ..." but systemd is always
+       # mounting / as shared which doesn't allow moving anything
+       mount --bind "${path}.tmpfs" "${path}"
+
+       print_status DONE
+}
+
 prepareenv() {
        # Are we running the right shell?
        if [ -z "${BASH}" ]; then
@@ -472,6 +537,9 @@ prepareenv() {
        export LFS LC_ALL CFLAGS CXXFLAGS MAKETUNING
        unset CC CXX CPP LD_LIBRARY_PATH LD_PRELOAD
 
+       # Mount ramdisk (if requested)
+       ramdisk_restore "${BASEDIR}/build"
+
        # Make some extra directories
        mkdir -p "${BASEDIR}/build${TOOLS_DIR}" 2>/dev/null
        mkdir -p $BASEDIR/build/{etc,usr/src} 2>/dev/null