Snapshot implemting started
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snapsh
72
snapsh
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@ -16,6 +16,17 @@
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## You should have received a copy of the GNU General Public License
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## along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Environment set up:
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TOPLEVEL="/root/btrfs-toplevel"
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SNAPSHOTS_LOCATION="/root/btrfs-toplevel/test"
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BTRFS_EXECUTABLE=$(which btrfs)
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TIMESTAMP=$(date +%Y.%m.%d-%H:%M:%S)
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SUBVOLUME="root"
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help() {
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printf "Usage:
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snapsh [OPTIONS]
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@ -24,11 +35,43 @@ Options:
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-h, --help Display this help message
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Exit codes:
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2 - Invalid options\n"
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2 - Invalid options
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3 - Error creating subvolume\n"
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}
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snapshot() {
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EXIT_CODE=0
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root_check
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# Check that the subvolume storing snapshots exists
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if [[ ! -d ${SNAPSHOTS_LOCATION} ]]; then
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printf "Subvolume ${SNAPSHOTS_LOCATION} does not exist. Create it now?\n"
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read -p "y/n: "
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if [[ "${REPLY}" == "y" ]]; then
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${BTRFS_EXECUTABLE} subvolume create ${SNAPSHOTS_LOCATION}
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else
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EXIT_CODE=3
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fi
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fi
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exit ${EXIT_CODE}
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}
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# Check for root permissions
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root_check() {
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if [[ "$UID" -ne 0 ]]; then
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printf "This option needs root permission.\n"
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exit 3
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fi
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}
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# If no options are given, display help
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if [[ "$#" -eq 0 ]]; then
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@ -38,7 +81,7 @@ fi
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# Options parsing:
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OPTIONS=$(getopt -a -n snapsh -o h --long help -- "$@")
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OPTIONS=$(getopt -a -n snapsh -o hs: --long help,snapshot: -- "$@")
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# Invalid options (getopt returns nonzero)
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if [[ "$?" -ne 0 ]]; then
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@ -48,13 +91,20 @@ if [[ "$?" -ne 0 ]]; then
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fi
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#eval set -- "$OPTIONS"
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while true;
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do
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case "$1" in
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-h | --help)
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help
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exit 0
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;;
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esac
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done
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while true; do
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case "$1" in
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-h | --help)
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help
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shift
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exit 0
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;;
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-s | --snapshot)
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snapshot
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shift 2
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;;
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esac
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done
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