mirror of
https://github.com/YunoHost/yunohost.git
synced 2024-09-03 20:06:10 +02:00
77 lines
2.4 KiB
Text
77 lines
2.4 KiB
Text
CAN_BIND=${CAN_BIND:-1}
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# Mark a file or a directory for backup
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# Note: currently, SRCPATH will be copied or binded to DESTPATH
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#
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# usage: ynh_backup srcdir destdir to_bind no_root
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# | arg: srcdir - directory to bind or copy
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# | arg: destdir - mountpoint or destination directory
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# | arg: to_bind - 1 to bind mounting the directory if possible
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# | arg: no_root - 1 to execute commands as current user
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ynh_backup() {
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local SRCPATH=$1
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local DESTPATH=$2
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local TO_BIND=${3:-0}
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local SUDO_CMD="sudo"
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[[ "${4:-}" = "1" ]] && SUDO_CMD=
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# validate arguments
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[[ -e "${SRCPATH}" ]] || {
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echo "Source path '${DESTPATH}' does not exist" >&2
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return 1
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}
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# prepend the backup directory
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[[ -n "${YNH_APP_BACKUP_DIR}" && "${DESTPATH:0:1}" != "/" ]] \
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&& DESTPATH="${YNH_APP_BACKUP_DIR}/${DESTPATH}"
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[[ ! -e "${DESTPATH}" ]] || {
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echo "Destination path '${DESTPATH}' already exist" >&2
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return 1
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}
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# attempt to bind mounting the directory
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if [[ "${CAN_BIND}" = "1" && "${TO_BIND}" = "1" ]]; then
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eval $SUDO_CMD mkdir -p "${DESTPATH}"
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if sudo mount --rbind "${SRCPATH}" "${DESTPATH}"; then
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# try to remount destination directory as read-only
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sudo mount -o remount,ro "${DESTPATH}" >/dev/null 2>&1 \
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|| sudo mount -o remount,ro,bind "${SRCPATH}" "${DESTPATH}" \
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|| true
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return 0
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else
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CAN_BIND=0
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echo "Bind mounting seems to be disabled on your system."
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echo "You have maybe to check your apparmor configuration."
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fi
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# delete mountpoint directory safely
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mountpoint -q "${DESTPATH}" && sudo umount -R "${DESTPATH}"
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eval $SUDO_CMD rm -rf "${DESTPATH}"
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fi
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# ... or just copy the directory
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eval $SUDO_CMD mkdir -p $(dirname "${DESTPATH}")
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eval $SUDO_CMD cp -a "${SRCPATH}" "${DESTPATH}"
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}
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# Deprecated helper since it's a dangerous one!
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ynh_bind_or_cp() {
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local AS_ROOT=${3:-0}
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local NO_ROOT=0
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[[ "${AS_ROOT}" = "1" ]] || NO_ROOT=1
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echo "This helper is deprecated, you should use ynh_backup instead" >&2
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ynh_backup "$1" "$2" 1 "$NO_ROOT"
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}
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# Create a directory under /tmp
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#
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# usage: ynh_mkdir_tmp
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# | ret: the created directory path
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ynh_mkdir_tmp() {
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TMPDIR="/tmp/$(ynh_string_random 6)"
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while [ -d $TMPDIR ]; do
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TMPDIR="/tmp/$(ynh_string_random 6)"
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done
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mkdir -p "$TMPDIR" && echo "$TMPDIR"
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}
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